/* roulang page: index */
:root{
  --ink:#1F4E5A;
  --ink-deep:#16363C;
  --cloud:#3E7C8A;
  --sand:#C9A46A;
  --paper:#F5F7F6;
  --card:#FFFFFF;
  --text:#182428;
  --muted:#5D6D70;
  --line:#DDE6E4;
  --danger:#A64B3C;
  --success:#2F7A5C;
  --radius-card:18px;
  --radius-img:14px;
  --radius-ctl:10px;
  --shadow-sm:0 10px 30px rgba(20,50,55,.08);
  --shadow-lg:0 16px 40px rgba(20,50,55,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--cloud)}
h1,h2,h3,h4{font-weight:650;line-height:1.24;letter-spacing:.012em;margin:0;color:var(--text)}
p{margin:0}
ul,ol{margin:0}
button{font-family:inherit}
.container{max-width:1240px;padding-left:24px;padding-right:24px;margin:0 auto;width:100%}

/* ============ 页头导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.nav-wrap{position:relative;display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}
.brand{display:inline-flex;align-items:center;gap:11px;white-space:nowrap;color:var(--ink-deep)}
.brand:hover{color:var(--ink-deep)}
.brand-mark{
  width:36px;height:36px;border-radius:10px;
  background:linear-gradient(135deg,var(--ink),var(--cloud));
  display:grid;place-items:center;flex:0 0 36px;
}
.brand-mark svg{width:19px;height:19px}
.brand-text{font-size:17.5px;letter-spacing:.01em}
.brand-text b{font-weight:700;color:var(--ink)}
.brand-text span{font-weight:500;color:var(--ink-deep);font-size:16.5px}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-list{display:flex;align-items:center;gap:24px;list-style:none;margin:0;padding:0}
.nav-list a{
  position:relative;display:inline-block;padding:7px 0;
  font-size:15px;color:var(--text);white-space:nowrap;
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--ink);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-list a:hover{color:var(--ink)}
.nav-list a:hover::after{transform:scaleX(1)}
.nav-list a.active{color:var(--ink);font-weight:600}
.nav-list a.active::after{transform:scaleX(1)}
.nav-list a:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,78,90,.18);border-radius:6px}
.nav-cta{height:42px;padding:0 18px;font-size:14.5px}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line);background:#fff;cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--paper)}
.nav-toggle:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,78,90,.18)}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--ink);border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .22s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-ctl);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease;
  text-decoration:none;
}
.btn svg{width:16px;height:16px;flex:0 0 16px}
.btn-ink{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-ink:hover{background:#173d47;color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(20,50,55,.18)}
.btn-ink:active{transform:none;box-shadow:none}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--ink)}
.btn-ghost:hover{background:var(--paper);color:var(--ink);transform:translateY(-1px)}
.btn-ghost:active{transform:none}
.btn:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,78,90,.25)}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--ink);
  border-bottom:1px solid transparent;padding-bottom:2px;
  transition:border-color .2s ease,color .2s ease;
}
.link-arrow::after{content:"→";font-size:14px;transition:transform .2s ease}
.link-arrow:hover{color:var(--ink);border-color:var(--ink)}
.link-arrow:hover::after{transform:translateX(3px)}
.link-arrow:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,78,90,.2);border-radius:4px}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--cloud);
  background:#fff;border:1px solid var(--line);border-radius:6px;
  padding:5px 12px;letter-spacing:.02em;
}
.eyebrow::before{content:"";width:14px;height:2px;background:var(--sand);border-radius:2px}
.section-title{font-size:clamp(24px,3vw,34px);color:var(--ink-deep);margin:16px 0 14px}
.section-desc{font-size:16px;color:var(--muted);line-height:1.82}
.badge-soft{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:6px;background:var(--paper);border:1px solid var(--line);
  color:var(--cloud);font-size:12.5px;font-weight:600;white-space:nowrap;
}
.meta{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}

/* ============ 首屏 ============ */
.hero{
  position:relative;background:#fff;border-bottom:1px solid var(--line);
  padding:72px 0 84px;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;right:-120px;top:-120px;width:380px;height:380px;
  border-radius:50%;background:rgba(62,124,138,.06);pointer-events:none;
}
.hero h1{
  font-size:clamp(30px,4.1vw,48px);
  color:var(--ink-deep);
  margin:22px 0 18px;
  line-height:1.2;
}
.hero h1 em{font-style:normal;color:var(--ink)}
.hero-sub{font-size:17px;color:var(--muted);line-height:1.85;max-width:580px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-points{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  list-style:none;margin:26px 0 0;padding:0;font-size:14px;color:var(--muted);
}
.hero-points li{display:flex;align-items:center;gap:10px}
.hero-points li+li::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--sand);flex:0 0 4px}
.hero-visual{position:relative;padding-bottom:34px}
.hero-frame{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);background:var(--paper);
  aspect-ratio:16/10;
}
.hero-frame img{width:100%;height:100%;object-fit:cover}
.hero-visual::after{
  content:"";position:absolute;right:-18px;top:-18px;width:110px;height:110px;
  border-right:1px dashed var(--line);border-top:1px dashed var(--line);
  border-radius:0 18px 0 0;pointer-events:none;
}
.hero-chip{
  position:absolute;left:-14px;bottom:0;z-index:2;
  display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:12px 16px;box-shadow:var(--shadow-sm);max-width:290px;
}
.hero-chip img{width:56px;height:46px;object-fit:cover;border-radius:8px;flex:0 0 56px}
.hero-chip strong{display:block;font-size:14px;color:var(--ink-deep);font-weight:650}
.hero-chip span{display:block;font-size:12.5px;color:var(--muted);margin-top:2px}

/* ============ 能力区 ============ */
.feature-main{
  display:grid;grid-template-columns:44% 1fr;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease;
}
.feature-main:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.fm-media{position:relative;min-height:238px;overflow:hidden}
.fm-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.feature-main:hover .fm-media img{transform:scale(1.03)}
.fm-body{padding:28px}
.fm-body h3{font-size:21px;color:var(--ink-deep);margin:12px 0 12px}
.fm-body ul{list-style:none;padding:0;margin:0 0 18px;display:grid;gap:8px}
.fm-body ul li{position:relative;padding-left:18px;font-size:14.5px;color:var(--muted);line-height:1.7}
.fm-body ul li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:2px;background:var(--sand);border-radius:2px}
.ability-list{
  list-style:none;margin:24px 0 0;padding:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.ability-item{display:flex;gap:18px;padding:22px 26px;border-top:1px solid var(--line);transition:background .2s ease}
.ability-item:first-child{border-top:0}
.ability-item:hover{background:var(--paper)}
.ability-num{
  font-family:ui-monospace,SFMono-Regular,"Courier New",monospace;
  font-size:13px;font-weight:700;color:var(--sand);padding-top:4px;min-width:26px;
}
.ability-body h3{font-size:17px;color:var(--ink-deep);margin-bottom:6px}
.ability-body p{font-size:14.5px;color:var(--muted);line-height:1.75}
.ability-body .link-arrow{font-size:14px;margin-top:8px}

/* ============ 数据带 ============ */
.stats-section{padding:0 0 88px}
.stats-grid{
  display:grid;grid-template-columns:1fr 1fr;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.stat-item{display:flex;align-items:flex-start;gap:22px;padding:34px 6px}
.stat-item:nth-child(odd){border-right:1px solid var(--line);padding-right:36px}
.stat-item:nth-child(even){padding-left:36px}
.stat-num{
  font-family:ui-monospace,SFMono-Regular,"Courier New",monospace;
  font-size:clamp(32px,4vw,46px);font-weight:700;color:var(--ink);
  font-variant-numeric:tabular-nums;line-height:1.02;letter-spacing:-.01em;flex:0 0 auto;
}
.stat-num small{font-size:14px;font-weight:600;color:var(--sand);margin-left:3px}
.stat-body h3{font-size:16px;color:var(--ink-deep);margin-bottom:6px}
.stat-body p{font-size:14px;color:var(--muted);line-height:1.7}

/* ============ 案例区 ============ */
.case-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
.case-card{
  display:block;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease;color:inherit;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);color:inherit}
.case-media{aspect-ratio:16/10;overflow:hidden}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.case-card:hover .case-media img{transform:scale(1.03)}
.case-body{padding:26px 28px}
.case-body h3{font-size:20px;color:var(--ink-deep);margin:12px 0 10px}
.case-body p{font-size:14.5px;color:var(--muted);line-height:1.8}
.case-body .link-arrow{margin-top:16px}
.case-side{display:grid;gap:24px}
.case-mini{
  display:grid;grid-template-columns:118px 1fr;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:14px;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease;color:inherit;
}
.case-mini:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);color:inherit}
.case-mini .mini-media{aspect-ratio:4/3;overflow:hidden;border-radius:12px}
.case-mini .mini-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.case-mini:hover .mini-media img{transform:scale(1.04)}
.case-mini h4{font-size:15.5px;color:var(--ink-deep);margin:8px 0 6px;line-height:1.5}
.case-mini p{font-size:13.5px;color:var(--muted);line-height:1.7}

/* ============ 最新信息 ============ */
.latest{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.latest-grid{display:grid;grid-template-columns:6fr 6fr;gap:24px;align-items:stretch}
.latest-lead{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease;color:inherit;
}
.latest-lead:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);color:inherit}
.latest-lead .lead-media{aspect-ratio:16/9;overflow:hidden;background:var(--paper)}
.latest-lead .lead-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.latest-lead:hover .lead-media img{transform:scale(1.03)}
.latest-lead .lead-body{padding:24px 26px}
.latest-lead h3{font-size:20px;color:var(--ink-deep);margin:12px 0 10px;line-height:1.5}
.latest-lead p{font-size:14.5px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.latest-lead .meta{margin-top:16px;display:block}
.latest-side{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:6px 26px;box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;justify-content:center;
}
.news-row{display:block;padding:20px 0;border-top:1px solid var(--line);color:inherit}
.news-row:first-child{border-top:0}
.news-row:hover .news-row-title{color:var(--ink)}
.news-row-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}
.news-row-title{
  display:block;font-size:16px;font-weight:650;color:var(--ink-deep);
  line-height:1.55;transition:color .2s ease;
}
.news-row p{
  font-size:13.5px;color:var(--muted);line-height:1.72;margin-top:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-empty{
  border:1px dashed #C9D6D4;border-radius:var(--radius-card);
  background:#fff;padding:48px 24px;text-align:center;color:var(--muted);
}
.cms-empty svg{width:36px;height:36px;color:var(--cloud);margin-bottom:14px}
.cms-empty p{font-size:15px;margin-bottom:18px}

/* ============ 方案步骤 ============ */
.step-list{list-style:none;margin:0;padding:0}
.step{position:relative;display:grid;grid-template-columns:54px 1fr;gap:22px;padding-bottom:26px}
.step::before{content:"";position:absolute;left:26px;top:54px;bottom:0;width:1px;background:var(--line)}
.step:last-child{padding-bottom:0}
.step:last-child::before{display:none}
.step-num{
  position:relative;z-index:1;width:54px;height:54px;border-radius:50%;
  background:#fff;border:1px solid var(--line);color:var(--ink);
  display:grid;place-items:center;
  font-family:ui-monospace,SFMono-Regular,"Courier New",monospace;
  font-size:15px;font-weight:700;
  transition:border-color .2s ease,background .2s ease,color .2s ease;
}
.step:hover .step-num{background:var(--ink);color:#fff;border-color:var(--ink)}
.step-body{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:22px 26px;box-shadow:var(--shadow-sm);
  transition:box-shadow .25s ease,border-color .25s ease;
}
.step:hover .step-body{box-shadow:var(--shadow-lg);border-color:#CBDCD9}
.step-body h3{font-size:17.5px;color:var(--ink-deep);margin-bottom:8px}
.step-body p{font-size:14.5px;color:var(--muted);line-height:1.8}
.step-body .badge-soft{margin-top:12px}

/* ============ FAQ ============ */
.faq-list{border-bottom:1px solid var(--line)}
.faq-item{border-top:1px solid var(--line);transition:background .2s ease}
.faq-item.open{background:var(--paper)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:transparent;border:0;padding:20px 8px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--text);cursor:pointer;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--ink)}
.faq-q:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,78,90,.18);border-radius:8px}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;
  transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{top:8px;left:0;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-q[aria-expanded="true"] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{padding:0 8px 22px;font-size:15.5px;color:var(--muted);line-height:1.85}
.faq-aside{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-sm);
}
.faq-aside h3{font-size:18px;color:var(--ink-deep);margin-bottom:10px}
.faq-aside p{font-size:14.5px;color:var(--muted);line-height:1.8;margin-bottom:18px}
.faq-aside .badge-soft{margin-bottom:14px}

/* ============ 联系表单 ============ */
.contact{background:#fff;border-top:1px solid var(--line)}
.contact-left{
  position:relative;overflow:hidden;border-radius:var(--radius-card);
  padding:38px 34px;color:#fff;min-height:100%;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
}
.contact-left::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(22,54,60,.95),rgba(31,78,90,.78));
}
.contact-left > *{position:relative;z-index:1}
.contact-left h3{color:#fff;font-size:22px;margin-bottom:12px}
.contact-left p{color:#CFE0DE;font-size:14.5px;line-height:1.85}
.contact-info{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:16px}
.contact-info li{display:flex;gap:12px;align-items:flex-start}
.contact-info svg{width:18px;height:18px;flex:0 0 18px;color:var(--sand);margin-top:3px}
.contact-info strong{display:block;font-size:14.5px;color:#fff;font-weight:600}
.contact-info span{display:block;font-size:13.5px;color:#B7CCCB}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:34px;box-shadow:var(--shadow-sm);
}
.form-card h3{font-size:20px;color:var(--ink-deep);margin-bottom:8px}
.form-card .form-intro{font-size:14px;color:var(--muted);margin-bottom:24px}
.form-label{font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px;display:block}
.form-control{
  height:46px;border-radius:var(--radius-ctl);border:1px solid var(--line);
  background:#fff;font-size:15px;color:var(--text);padding:0 14px;
  box-shadow:none;transition:border-color .2s ease,box-shadow .2s ease;
}
.form-control::placeholder{color:#9BAEAC}
.form-control:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(31,78,90,.14);outline:none}
textarea.form-control{height:auto;min-height:112px;padding:12px 14px;resize:vertical;line-height:1.75}
.form-note{font-size:13px;color:var(--muted);line-height:1.7;margin-top:16px}
.form-ok{
  display:none;margin-top:16px;padding:10px 14px;border-radius:10px;
  background:rgba(47,122,92,.1);color:var(--success);font-size:13.5px;
}
.form-ok.show{display:block}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-deep);color:#DCE8E7;
  border-top:2px solid var(--sand);
  padding:56px 0 26px;
}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:17.5px;font-weight:700;color:#fff;margin-bottom:16px;
}
.footer-brand .fb-mark{
  width:32px;height:32px;border-radius:9px;background:rgba(255,255,255,.1);
  display:grid;place-items:center;flex:0 0 32px;
}
.footer-brand .fb-mark svg{width:17px;height:17px;color:var(--sand)}
.footer-brand em{font-style:normal;color:var(--sand)}
.footer-desc{font-size:14px;color:#A9C0BF;line-height:1.85;max-width:330px}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-links{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.footer-links a{font-size:14px;color:#B9CDCC}
.footer-links a:hover{color:var(--sand);text-decoration:underline}
.footer-contact{list-style:none;padding:0;margin:0;display:grid;gap:12px;font-size:14px;color:#B9CDCC}
.footer-contact li{display:flex;gap:10px;align-items:flex-start;line-height:1.7}
.footer-contact svg{width:16px;height:16px;flex:0 0 16px;color:var(--sand);margin-top:4px}
.footer-bottom{
  margin-top:42px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FAAA9;
}
.footer-bottom a{color:#8FAAA9}
.footer-bottom a:hover{color:var(--sand)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-list{gap:18px}
  .nav-list a{font-size:14.5px}
  .nav-menu{gap:18px}
  .hero h1{font-size:clamp(30px,3.6vw,42px)}
}
@media (max-width:991px){
  .nav-toggle{display:inline-flex}
  .nav-menu{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 18px 30px rgba(20,50,55,.08);
    padding:8px 0 18px;
  }
  .nav-menu.open{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list a{
    display:block;padding:13px 24px;font-size:16px;border-radius:0;
  }
  .nav-list a::after{display:none}
  .nav-list a:hover{background:var(--paper)}
  .nav-list a.active{
    color:var(--ink);font-weight:600;background:var(--paper);
    box-shadow:inset 3px 0 0 var(--ink);
  }
  .nav-cta{margin:12px 24px 0;height:46px;width:calc(100% - 48px)}
  .hero{padding:52px 0 64px}
  .hero-visual{margin-top:40px;padding-bottom:32px}
  .hero-chip{left:12px;bottom:6px}
  .hero-visual::after{display:none}
  .section{padding:64px 0}
  .stats-section{padding-bottom:64px}
  .case-grid{grid-template-columns:1fr}
  .latest-grid{grid-template-columns:1fr}
  .feature-main{grid-template-columns:40% 1fr}
  .stat-item:nth-child(odd){padding-right:24px}
  .stat-item:nth-child(even){padding-left:24px}
  .contact-left{margin-bottom:24px}
}
@media (max-width:767px){
  .container{padding-left:20px;padding-right:20px}
  .hero h1{font-size:clamp(26px,6.4vw,34px)}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{flex:1 1 auto;min-width:150px}
  .feature-main{grid-template-columns:1fr}
  .fm-media{min-height:190px;aspect-ratio:16/10}
  .fm-body{padding:24px 22px}
  .ability-item{padding:20px 20px;gap:14px}
  .stats-grid{grid-template-columns:1fr}
  .stat-item:nth-child(odd){border-right:0;padding-right:6px}
  .stat-item:nth-child(even){padding-left:6px;border-top:1px solid var(--line)}
  .stat-item{padding:26px 6px}
  .case-mini{grid-template-columns:100px 1fr}
  .latest-side{padding:6px 20px}
  .step{grid-template-columns:44px 1fr;gap:14px}
  .step::before{left:21px;top:46px}
  .step-num{width:44px;height:44px;font-size:13.5px}
  .step-body{padding:18px 20px}
  .faq-aside{margin-bottom:24px}
  .form-card{padding:26px 22px}
  .contact-left{padding:30px 24px}
  .section{padding:56px 0}
  .stats-section{padding-bottom:56px}
  .footer-bottom{margin-top:32px}
}
@media (max-width:520px){
  .brand-text{font-size:16px}
  .brand-text span{font-size:15px}
  .hero-actions{gap:10px}
  .hero-actions .btn{width:100%;flex:1 1 100%}
  .hero-chip{max-width:100%;left:8px;right:8px;bottom:4px}
  .hero-chip img{width:48px;height:40px;flex:0 0 48px}
  .hero-points{font-size:13px;gap:8px}
  .case-mini{grid-template-columns:1fr}
  .case-mini .mini-media{aspect-ratio:16/10}
  .faq-q{font-size:15.5px;padding:18px 6px}
  .stat-num{font-size:34px}
}

/* roulang page: article */
:root{
  --ink:#182428;
  --ink-soft:#5D6D70;
  --primary:#1F4E5A;
  --primary-dark:#173C46;
  --primary-soft:#3E7C8A;
  --sand:#C9A46A;
  --paper:#F5F7F6;
  --card:#FFFFFF;
  --border:#DDE6E4;
  --footer-bg:#16363C;
  --danger:#A64B3C;
  --success:#2F7A5C;
  --radius-card:18px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow:0 10px 30px rgba(20,50,55,.08);
  --shadow-hover:0 16px 40px rgba(20,50,55,.12);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:650;line-height:1.25;letter-spacing:.01em;color:var(--ink)}
p{margin:0}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-dark)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(31,78,90,.3);outline-offset:2px}

.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px}

/* ---------- 按钮 ---------- */
.btn-ink,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;font-size:15px;font-weight:600;line-height:1.4;
  border-radius:var(--radius-btn);text-decoration:none;cursor:pointer;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn-ink{background:var(--primary);border:1px solid var(--primary);color:#fff}
.btn-ink:hover{background:var(--primary-dark);border-color:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(31,78,90,.22)}
.btn-ink:active{transform:none;box-shadow:none}
.btn-line{background:#fff;border:1px solid var(--primary);color:var(--primary)}
.btn-line:hover{background:var(--paper);color:var(--primary-dark);border-color:var(--primary-dark)}
.btn-line:active{transform:translateY(1px)}
.btn-ink:focus-visible,.btn-line:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,78,90,.25)}
.w-100{width:100%}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;border-bottom:1px solid var(--border);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:76px;gap:20px;position:relative}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--primary) 0%,var(--primary-soft) 100%);
}
.brand-mark svg{width:21px;height:21px}
.brand-text{display:flex;align-items:baseline;gap:5px;white-space:nowrap}
.brand-text b{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.brand-text span{font-size:15px;font-weight:500;color:var(--ink-soft);letter-spacing:.02em}
.brand:hover .brand-text b{color:var(--primary)}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-list{display:flex;align-items:center;gap:24px}
.nav-list a{
  position:relative;display:inline-block;padding:6px 0;
  font-size:15px;color:var(--ink-soft);text-decoration:none;white-space:nowrap;
  transition:color .2s ease;
}
.nav-list a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--primary);border-radius:2px;transition:width .24s ease;
}
.nav-list a:hover{color:var(--primary)}
.nav-list a:hover::after{width:100%}
.nav-list a.active{color:var(--primary);font-weight:600}
.nav-list a.active::after{width:22px}
.nav-cta{padding:9px 20px;font-size:14px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;padding:0;
  border:1px solid var(--border);border-radius:10px;background:#fff;
  position:relative;cursor:pointer;
}
.nav-toggle span{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:18px;height:2px;background:var(--ink);border-radius:2px;transition:background .2s ease;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
  border-radius:2px;transition:transform .24s ease,top .24s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

/* ---------- 面包屑 ---------- */
.page-breadcrumb{
  background:#fff;border-bottom:1px solid var(--border);
  padding:14px 0;
}
.page-breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-soft)}
.page-breadcrumb li{display:inline-flex;align-items:center;gap:8px;max-width:100%}
.page-breadcrumb li+li::before{content:"/";color:#B9C8C6}
.page-breadcrumb a{color:var(--ink-soft)}
.page-breadcrumb a:hover{color:var(--primary)}
.page-breadcrumb li[aria-current]{color:var(--primary);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:52vw}

/* ---------- 文章主体 ---------- */
.article-shell{padding:44px 0 88px}
.article-main{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);box-shadow:var(--shadow);padding:36px 40px 44px}
.badge-cat{
  display:inline-block;padding:5px 12px;border-radius:6px;
  background:var(--paper);border:1px solid var(--border);
  font-size:13px;font-weight:600;color:var(--primary);letter-spacing:.02em;
}
.article-title{font-size:36px;line-height:1.22;margin:16px 0 0;letter-spacing:.01em}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:18px;font-size:14px;color:var(--ink-soft);
}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta svg{width:15px;height:15px;color:var(--primary-soft)}
.article-divider{height:1px;background:var(--border);margin:24px 0 30px;border:0}

.prose{font-size:17px;line-height:1.9;color:var(--ink);overflow-wrap:break-word}
.prose p{margin:0 0 1.2em}
.prose h2{font-size:27px;line-height:1.35;margin:1.9em 0 .75em;padding-left:14px;position:relative}
.prose h2::before{content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:3px;background:var(--sand)}
.prose h3{font-size:21px;line-height:1.4;margin:1.6em 0 .6em;color:var(--primary)}
.prose h4{font-size:18px;margin:1.4em 0 .5em}
.prose ul{list-style:disc;padding-left:1.4em;margin:0 0 1.2em}
.prose ol{list-style:decimal;padding-left:1.4em;margin:0 0 1.2em}
.prose li{margin-bottom:.5em}
.prose li::marker{color:var(--primary-soft)}
.prose blockquote{
  margin:1.7em 0;padding:18px 24px;background:var(--paper);
  border-left:3px solid var(--sand);border-radius:0 12px 12px 0;
  color:#334A4E;font-size:16.5px;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:var(--radius-img);margin:1.6em auto;height:auto}
.prose figure{margin:1.8em 0}
.prose figcaption{font-size:13px;color:var(--ink-soft);text-align:center;margin-top:10px;line-height:1.6}
.prose a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.prose a:hover{color:var(--primary-dark)}
.prose table{width:100%;border-collapse:collapse;margin:1.7em 0;font-size:15px;line-height:1.7}
.prose th{background:var(--paper);text-align:left;font-weight:600;color:var(--primary);padding:12px 14px;border-bottom:1px solid var(--border)}
.prose td{padding:12px 14px;border-bottom:1px solid var(--border);color:#334A4E}
.prose hr{border:0;height:1px;background:var(--border);margin:2.2em 0}
.prose code{background:var(--paper);border:1px solid var(--border);border-radius:6px;padding:2px 6px;font-size:.92em}

.empty-state{
  border:1px dashed var(--border);border-radius:var(--radius-card);
  background:var(--paper);padding:44px 28px;text-align:center;
}
.empty-state h1{font-size:26px;margin-bottom:12px}
.empty-state p{color:var(--ink-soft);font-size:15px;margin-bottom:20px}

/* ---------- 侧栏 ---------- */
.article-aside{display:flex;flex-direction:column;gap:20px}
.side-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  box-shadow:var(--shadow);padding:24px;
}
.side-eyebrow{font-size:13px;font-weight:600;color:var(--sand);letter-spacing:.08em;margin-bottom:8px}
.side-title{font-size:19px;line-height:1.4;margin-bottom:10px}
.side-text{font-size:14px;line-height:1.8;color:var(--ink-soft);margin-bottom:18px}
.side-list{display:flex;flex-direction:column;gap:14px;margin-bottom:18px}
.mini-post{display:flex;gap:12px;align-items:flex-start;text-decoration:none;padding-bottom:14px;border-bottom:1px solid var(--border)}
.mini-post:last-child{padding-bottom:0;border-bottom:0}
.mini-thumb{width:72px;height:56px;border-radius:10px;overflow:hidden;flex-shrink:0;background:var(--paper)}
.mini-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.mini-post:hover .mini-thumb img{transform:scale(1.05)}
.mini-body{min-width:0}
.mini-title{font-size:14.5px;font-weight:600;color:var(--ink);line-height:1.5;margin-bottom:4px;transition:color .2s ease}
.mini-post:hover .mini-title{color:var(--primary)}
.mini-meta{font-size:12.5px;color:var(--ink-soft)}

/* ---------- 相关推荐 ---------- */
.related-section{padding:0 0 84px}
.section-bar{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.section-bar h2{font-size:28px}
.section-bar p{font-size:15px;color:var(--ink-soft);margin-top:8px}
.related-grid{display:grid;grid-template-columns:1.55fr 1fr 1fr;gap:24px}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-card);box-shadow:var(--shadow);overflow:hidden;
  text-decoration:none;transition:transform .26s ease,box-shadow .26s ease;
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.post-thumb{overflow:hidden;aspect-ratio:16/10;background:var(--paper)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-cat{font-size:12.5px;font-weight:600;color:var(--primary);letter-spacing:.04em}
.post-title{font-size:18px;line-height:1.45;color:var(--ink);transition:color .2s ease}
.post-card:hover .post-title{color:var(--primary)}
.post-desc{font-size:14px;line-height:1.75;color:var(--ink-soft)}
.post-link{margin-top:auto;font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.post-card:hover .post-link{gap:10px}

/* ---------- CTA 带 ---------- */
.article-cta{padding:0 0 88px}
.cta-band{
  border-radius:22px;border:1px solid var(--border);box-shadow:var(--shadow);
  padding:38px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  background-image:linear-gradient(100deg,rgba(245,247,246,.96) 0%,rgba(245,247,246,.9) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.cta-text h2{font-size:25px;line-height:1.35;margin-bottom:8px}
.cta-text p{font-size:15px;line-height:1.8;color:var(--ink-soft);max-width:560px}
.cta-actions{display:flex;gap:12px;flex-shrink:0;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer-bg);color:#E6EFED;padding:56px 0 0;border-top:3px solid var(--sand)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.fb-mark{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
}
.fb-mark svg{width:19px;height:19px;color:#E6EFED}
.footer-brand span{font-size:16px;font-weight:700;color:#fff;letter-spacing:.02em}
.footer-brand em{font-style:normal;font-weight:500;color:#A9C3C2;margin-left:4px;font-size:15px}
.footer-desc{font-size:14px;line-height:1.8;color:#A9C3C2;max-width:340px}
.footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.04em}
.footer-links li,.footer-contact li{margin-bottom:11px}
.footer-links a{font-size:14px;color:#A9C3C2;text-decoration:none;transition:color .2s ease}
.footer-links a:hover{color:var(--sand);text-decoration:underline;text-underline-offset:3px}
.footer-contact li{display:flex;gap:9px;align-items:flex-start;font-size:14px;color:#A9C3C2;line-height:1.7}
.footer-contact svg{width:16px;height:16px;flex-shrink:0;margin-top:4px;color:var(--sand)}
.footer-bottom{
  margin-top:36px;padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:#8FADAC;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .article-title{font-size:32px}
  .nav-menu{gap:18px}
  .nav-list{gap:18px}
  .related-grid{grid-template-columns:1fr 1fr}
  .related-grid .post-card:first-child{grid-column:span 2}
}
@media (max-width:991.98px){
  .nav-toggle{display:block}
  .nav-menu{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-top:1px solid var(--border);
    box-shadow:var(--shadow);padding:10px 24px 20px;z-index:1040;
  }
  .nav-menu.is-open{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list a{padding:13px 0 13px 14px;border-left:3px solid transparent;font-size:15.5px}
  .nav-list a::after{display:none}
  .nav-list a.active{background:var(--paper);border-left-color:var(--primary)}
  .nav-cta{margin-top:14px;width:100%}
  .article-main{padding:28px 24px 32px}
  .article-aside{position:static}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 26px}
  .cta-actions{width:100%}
}
@media (max-width:767.98px){
  .container{padding-left:20px;padding-right:20px}
  .nav-wrap{height:64px}
  .brand-mark{width:34px;height:34px;border-radius:10px}
  .brand-text b{font-size:15.5px}
  .brand-text span{font-size:13.5px}
  .article-shell{padding:26px 0 60px}
  .article-main{padding:24px 18px 28px}
  .article-title{font-size:26px}
  .prose{font-size:16px;line-height:1.9}
  .prose h2{font-size:22px}
  .prose h3{font-size:19px}
  .prose table{display:block;overflow-x:auto;white-space:nowrap}
  .related-grid{grid-template-columns:1fr}
  .related-grid .post-card:first-child{grid-column:auto}
  .section-bar{flex-direction:column;align-items:flex-start}
  .section-bar h2{font-size:23px}
  .cta-text h2{font-size:21px}
  .cta-actions .btn-ink,.cta-actions .btn-line{width:100%}
  .page-breadcrumb li[aria-current]{max-width:44vw}
  .footer-bottom{flex-direction:column}
}
@media (max-width:519.98px){
  .brand-text span{display:none}
  .article-title{font-size:23px}
  .article-meta{font-size:13px;gap:8px 14px}
}

/* roulang page: category1 */
:root{
  --ink:#182428;
  --muted:#5D6D70;
  --primary:#1F4E5A;
  --primary-2:#3E7C8A;
  --primary-dark:#16363C;
  --sand:#C9A46A;
  --paper:#F5F7F6;
  --card:#FFFFFF;
  --line:#DDE6E4;
  --error:#A64B3C;
  --success:#2F7A5C;
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 10px 30px rgba(20,50,55,.08);
  --shadow-md:0 16px 40px rgba(20,50,55,.12);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--card);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-2);}
p{margin:0 0 1em;}
h1,h2,h3,h4,h5{margin:0;letter-spacing:.01em;color:var(--ink);font-weight:650;line-height:1.28;}
ul,ol{margin:0;padding:0;}
button{font-family:inherit;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  font-size:15px;
  font-weight:600;
  line-height:1;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-ink,.btn-primary-c{background:var(--primary);color:#fff;border-color:var(--primary);}
.btn-ink:hover,.btn-primary-c:hover{background:#173f49;border-color:#173f49;color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(31,78,90,.24);}
.btn-ink:active,.btn-primary-c:active{transform:translateY(0);box-shadow:none;}
.btn-line{background:#fff;color:var(--primary);border-color:var(--line);}
.btn-line:hover{background:var(--paper);border-color:var(--primary);color:var(--primary);}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.5);}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff;}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(31,78,90,.25);
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:76px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--ink);
  text-decoration:none;
  flex:0 0 auto;
}
.brand-mark{
  width:38px;
  height:38px;
  border-radius:12px;
  background:var(--primary);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 38px;
}
.brand-mark svg{width:21px;height:21px;}
.brand-text{display:flex;flex-direction:column;line-height:1.12;}
.brand-text b{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.02em;}
.brand-text span{font-size:12px;color:var(--muted);letter-spacing:.08em;}
.brand:hover .brand-text b{color:var(--primary);}

.nav-menu{display:flex;align-items:center;gap:20px;}
.nav-list{display:flex;align-items:center;gap:18px;list-style:none;}
.nav-list a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:var(--ink);
  white-space:nowrap;
  transition:color .2s ease;
}
.nav-list a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.nav-list a:hover{color:var(--primary);}
.nav-list a:hover::after{transform:scaleX(1);}
.nav-list a.active{color:var(--primary);font-weight:600;}
.nav-list a.active::after{transform:scaleX(1);}
.nav-cta{margin-left:4px;height:42px;padding:0 18px;font-size:14.5px;}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:#fff;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  flex:0 0 44px;
}
.nav-toggle span{
  position:relative;
  display:block;
  width:18px;height:2px;
  background:var(--primary);
  border-radius:2px;
  transition:background .2s ease;
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;height:2px;
  background:var(--primary);
  border-radius:2px;
  transition:transform .22s ease,top .22s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}

/* ---------- 首屏横带 ---------- */
.page-hero{
  position:relative;
  padding:64px 0 56px;
  color:#fff;
  background:url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(100deg,rgba(19,45,51,.95) 0%,rgba(31,78,90,.9) 56%,rgba(31,78,90,.66) 100%);
}
.page-hero .container{position:relative;z-index:1;}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:rgba(255,255,255,.68);
  margin-bottom:22px;
}
.crumb a{color:rgba(255,255,255,.82);}
.crumb a:hover{color:#fff;text-decoration:underline;}
.crumb .sep{color:rgba(255,255,255,.4);}
.crumb .current{color:var(--sand);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--sand);
  padding:6px 12px;
  border:1px solid rgba(201,164,106,.5);
  border-radius:6px;
  background:rgba(201,164,106,.1);
  margin-bottom:18px;
}
.page-hero h1{
  color:#fff;
  font-size:clamp(28px,3.6vw,44px);
  font-weight:650;
  line-height:1.22;
  margin-bottom:16px;
  max-width:880px;
}
.hero-sub{
  font-size:17px;
  line-height:1.8;
  color:rgba(255,255,255,.84);
  max-width:660px;
  margin:0 0 26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 锚点条 ---------- */
.anchor-bar{background:#fff;border-bottom:1px solid var(--line);}
.anchor-bar .inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  padding:16px 0;
}
.anchor-bar .bar-label{
  font-size:13px;
  color:var(--muted);
  letter-spacing:.08em;
  margin-right:4px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--primary);
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:6px;
  padding:7px 14px;
  transition:background-color .2s ease,border-color .2s ease,transform .2s ease,color .2s ease;
}
.chip:hover{background:#fff;border-color:var(--primary);color:var(--primary);transform:translateY(-1px);}

/* ---------- 通用板块 ---------- */
.section{padding:80px 0;}
.section-alt{background:var(--paper);}
.section-tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-label{
  display:block;
  font-size:13px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--primary-2);
  margin-bottom:10px;
}
.section-head h2{
  font-size:clamp(24px,2.5vw,32px);
  font-weight:650;
  margin-bottom:12px;
}
.section-head p{color:var(--muted);font-size:16px;line-height:1.85;margin:0;}

/* ---------- 目录卡 ---------- */
.toc-card{
  position:sticky;
  top:96px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:22px;
  box-shadow:var(--shadow-sm);
}
.toc-title{
  font-size:13px;
  letter-spacing:.1em;
  color:var(--muted);
  margin-bottom:14px;
}
.toc-list{list-style:none;}
.toc-list li:not(:last-child){border-bottom:1px solid var(--line);}
.toc-list a{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:10px 0;
  font-size:14.5px;
  color:var(--ink);
  transition:color .2s ease,padding-left .2s ease;
}
.toc-list a b{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:12px;
  color:var(--primary-2);
  font-weight:600;
}
.toc-list a:hover{color:var(--primary);padding-left:4px;}
.toc-note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--muted);
  line-height:1.7;
}

/* ---------- 步骤 ---------- */
.steps{display:flex;flex-direction:column;gap:20px;}
.step{
  position:relative;
  display:flex;
  gap:18px;
  scroll-margin-top:100px;
}
.step-num{
  flex:0 0 46px;
  width:46px;height:46px;
  display:flex;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  background:var(--paper);
  border:1px solid var(--line);
  color:var(--primary);
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:15px;
  font-weight:700;
  z-index:1;
}
.step-body{
  flex:1;
  min-width:0;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:22px 26px;
  box-shadow:var(--shadow-sm);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.step:hover .step-body{
  box-shadow:var(--shadow-md);
  transform:translateY(-2px);
  border-color:#CBDCD9;
}
.step-body h3{font-size:19px;font-weight:600;margin-bottom:8px;}
.step-body p{font-size:15.5px;line-height:1.85;color:var(--muted);margin:0;}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tip-inline{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  color:var(--primary);
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:6px;
  padding:4px 10px;
}
.tip-inline svg{width:14px;height:14px;flex:0 0 14px;}

/* ---------- 提示框 ---------- */
.notice{
  display:flex;
  gap:14px;
  background:var(--paper);
  border:1px solid var(--line);
  border-left:3px solid var(--sand);
  border-radius:var(--radius-md);
  padding:20px 22px;
  margin-top:28px;
}
.notice-icon{
  flex:0 0 24px;
  width:24px;height:24px;
  color:var(--sand);
  margin-top:2px;
}
.notice-icon svg{width:24px;height:24px;}
.notice h4{font-size:16px;font-weight:600;margin-bottom:6px;}
.notice p{font-size:15px;line-height:1.8;color:var(--muted);margin:0;}
.notice p + p{margin-top:8px;}

/* ---------- 核对清单 ---------- */
.check-list{display:grid;gap:16px;}
.check-item{
  display:flex;
  gap:14px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:20px 22px;
  transition:box-shadow .25s ease,transform .25s ease;
}
.check-item:hover{box-shadow:var(--shadow-sm);transform:translateY(-2px);}
.check-mark{
  flex:0 0 26px;
  width:26px;height:26px;
  border-radius:8px;
  background:rgba(47,122,92,.1);
  color:var(--success);
  display:flex;
  align-items:center;
  justify-content:center;
  margin-top:2px;
}
.check-mark svg{width:15px;height:15px;}
.check-item h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.check-item p{font-size:15px;line-height:1.8;color:var(--muted);margin:0;}

/* ---------- 图文说明 ---------- */
.figure-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  height:100%;
}
.figure-card img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  display:block;
}
.figure-caption{
  padding:14px 18px;
  font-size:13px;
  color:var(--muted);
  border-top:1px solid var(--line);
  line-height:1.7;
}
.explain h2{font-size:clamp(22px,2.2vw,28px);margin-bottom:14px;}
.explain p{font-size:16px;line-height:1.85;color:var(--muted);}
.point-list{list-style:none;display:grid;gap:12px;margin-top:8px;}
.point-list li{
  display:flex;
  gap:12px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--ink);
}
.point-list li::before{
  content:"";
  flex:0 0 7px;
  width:7px;height:7px;
  margin-top:10px;
  border-radius:50%;
  background:var(--sand);
}

/* ---------- FAQ ---------- */
.faq-accordion{
  --bs-accordion-bg:transparent;
  --bs-accordion-border-color:transparent;
  --bs-accordion-border-radius:0;
  --bs-accordion-inner-border-radius:0;
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-btn-color:var(--ink);
  --bs-accordion-active-color:var(--primary);
  --bs-accordion-active-bg:var(--paper);
  --bs-accordion-body-bg:var(--paper);
  --bs-accordion-btn-icon:none;
  --bs-accordion-btn-active-icon:none;
}
.faq-accordion .accordion-item{
  background:transparent;
  border:0;
  border-top:1px solid var(--line);
}
.faq-accordion .accordion-item:last-child{border-bottom:1px solid var(--line);}
.faq-accordion .accordion-button{
  position:relative;
  background:transparent;
  font-size:16.5px;
  font-weight:600;
  color:var(--ink);
  padding:18px 48px 18px 18px;
  border-radius:0;
  box-shadow:none;
  transition:background-color .2s ease,color .2s ease;
}
.faq-accordion .accordion-button::after{
  content:"+";
  position:absolute;
  right:18px;
  top:50%;
  transform:translateY(-50%);
  width:auto;height:auto;
  background-image:none;
  font-size:22px;
  font-weight:400;
  line-height:1;
  color:var(--primary-2);
  transition:color .2s ease;
}
.faq-accordion .accordion-button:not(.collapsed){
  background:var(--paper);
  color:var(--primary);
  box-shadow:none;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"−";color:var(--primary);}
.faq-accordion .accordion-button:hover{color:var(--primary);}
.faq-accordion .accordion-body{
  background:var(--paper);
  font-size:15.5px;
  line-height:1.85;
  color:var(--muted);
  padding:2px 48px 20px 18px;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--primary-dark);
  color:#fff;
  border-top:3px solid var(--sand);
  border-radius:var(--radius-lg);
  padding:44px 40px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
}
.cta-band h2{
  color:#fff;
  font-size:clamp(22px,2.3vw,28px);
  margin-bottom:10px;
}
.cta-band p{
  color:rgba(255,255,255,.76);
  font-size:15.5px;
  line-height:1.8;
  margin:0;
  max-width:560px;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--primary-dark);
  color:rgba(255,255,255,.76);
  border-top:3px solid var(--sand);
  padding:60px 0 26px;
  margin-top:0;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:700;
  letter-spacing:.02em;
  margin-bottom:14px;
}
.footer-brand em{
  font-style:normal;
  font-weight:400;
  font-size:13px;
  color:rgba(255,255,255,.62);
  margin-left:2px;
  letter-spacing:.06em;
}
.fb-mark{
  width:34px;height:34px;
  flex:0 0 34px;
  border-radius:10px;
  background:rgba(255,255,255,.1);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:#fff;
}
.fb-mark svg{width:19px;height:19px;}
.footer-desc{
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.62);
  margin:0;
  max-width:320px;
}
.footer-title{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:14px;
  letter-spacing:.04em;
}
.footer-links{list-style:none;display:grid;gap:10px;}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.72);
  transition:color .2s ease;
}
.footer-links a:hover{color:var(--sand);text-decoration:underline;}
.footer-contact{list-style:none;display:grid;gap:12px;}
.footer-contact li{
  display:flex;
  gap:10px;
  font-size:14px;
  line-height:1.7;
  color:rgba(255,255,255,.72);
}
.footer-contact svg{
  width:17px;height:17px;
  flex:0 0 17px;
  margin-top:4px;
  color:var(--sand);
}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-size:13.5px;
  color:rgba(255,255,255,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .nav-list{gap:14px;}
  .nav-list a{font-size:14px;}
  .nav-menu{gap:14px;}
  .nav-cta{padding:0 15px;font-size:14px;}
}

@media (max-width:991.98px){
  .nav-wrap{height:64px;}
  .nav-toggle{display:inline-flex;}
  .nav-menu{
    position:absolute;
    top:calc(100% + 1px);
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:#fff;
    border-top:1px solid var(--line);
    box-shadow:0 18px 30px rgba(20,50,55,.1);
    padding:6px 0 16px;
  }
  .nav-menu.open{display:flex;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;}
  .nav-list li{border-bottom:1px solid var(--line);}
  .nav-list li:last-child{border-bottom:none;}
  .nav-list a{
    display:block;
    padding:13px 24px;
    font-size:15px;
    border-left:3px solid transparent;
  }
  .nav-list a::after{display:none;}
  .nav-list a.active{
    border-left-color:var(--primary);
    background:var(--paper);
  }
  .nav-cta{margin:14px 24px 0;height:44px;}

  .section{padding:60px 0;}
  .section-tight{padding:52px 0;}
  .page-hero{padding:52px 0 46px;}
  .toc-card{position:static;margin-bottom:8px;}
  .cta-band{padding:34px 26px;}
  .step-body{padding:20px;}
}

@media (max-width:767.98px){
  .container{padding-left:18px;padding-right:18px;}
  .section{padding:52px 0;}
  .page-hero{padding:44px 0 40px;}
  .page-hero h1{font-size:clamp(24px,6.2vw,32px);}
  .hero-sub{font-size:15.5px;margin-bottom:22px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{width:100%;}
  .anchor-bar .inner{padding:14px 0;}
  .chip{font-size:13px;padding:6px 12px;}
  .step{gap:12px;}
  .step-num{flex:0 0 40px;width:40px;height:40px;border-radius:12px;font-size:13.5px;}
  .step-body{padding:18px;}
  .step-body h3{font-size:17.5px;}
  .step-body p{font-size:15px;}
  .notice{padding:16px 18px;flex-direction:column;gap:10px;}
  .check-item{padding:16px 18px;}
  .cta-band{padding:28px 20px;gap:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-accordion .accordion-button{font-size:15.5px;padding:16px 44px 16px 14px;}
  .faq-accordion .accordion-body{font-size:15px;padding:2px 44px 18px 14px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .footer-brand{font-size:16px;}
  .footer-desc{max-width:100%;}
}

@media (max-width:519.98px){
  .brand-text b{font-size:15.5px;}
  .brand-text span{font-size:11px;}
  .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;}
  .toc-card{padding:18px;}
  .step-body h3{font-size:16.5px;}
  .cta-band h2{font-size:20px;}
}

/* roulang page: category2 */
:root{
  --ink:#182428;
  --ink-2:#5D6D70;
  --ink-3:#41534F;
  --primary:#1F4E5A;
  --primary-dark:#173C46;
  --primary-2:#3E7C8A;
  --sand:#C9A46A;
  --paper:#F5F7F6;
  --paper-2:#EEF3F2;
  --card:#FFFFFF;
  --line:#DDE6E4;
  --footer:#16363C;
  --danger:#A64B3C;
  --success:#2F7A5C;
  --radius-card:18px;
  --radius-btn:10px;
  --radius-img:14px;
  --radius-badge:6px;
  --shadow-sm:0 10px 30px rgba(20,50,55,.08);
  --shadow-md:0 16px 40px rgba(20,50,55,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--primary);}
button{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,78,90,.28);border-radius:6px;}
[id]{scroll-margin-top:100px;}

/* ---------- 容器 ---------- */
.container{max-width:1240px;padding-left:24px;padding-right:24px;}
@media (max-width:575px){.container{padding-left:18px;padding-right:18px;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn svg{width:16px;height:16px;flex:none;}
.btn-ink{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(31,78,90,.18);}
.btn-ink:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(31,78,90,.24);}
.btn-ink:active{transform:translateY(0);box-shadow:0 4px 12px rgba(31,78,90,.2);}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover{background:var(--paper-2);color:var(--primary-dark);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-link{height:auto;padding:0;background:none;border:0;color:var(--primary);font-weight:600;text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px;}
.btn-link:hover{color:var(--primary-dark);}
.btn-link svg{width:14px;height:14px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;border-bottom:1px solid var(--line);
}
.site-header .container{position:relative;}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:76px;}
.brand{display:flex;align-items:center;gap:11px;flex:none;}
.brand-mark{width:38px;height:38px;border-radius:11px;background:var(--primary);display:grid;place-items:center;flex:none;box-shadow:0 6px 16px rgba(31,78,90,.22);}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.18;font-size:17px;color:var(--primary);letter-spacing:.01em;}
.brand-text b{font-weight:700;}
.brand-text span{font-size:12.5px;font-weight:500;color:var(--ink-2);letter-spacing:.06em;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;position:relative;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--primary);margin:0 auto;position:relative;transition:background .22s var(--ease);}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--primary);transition:transform .25s var(--ease),top .25s var(--ease);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}
.nav-menu{display:flex;align-items:center;gap:26px;}
.nav-list{display:flex;align-items:center;gap:22px;}
.nav-list a{position:relative;display:inline-block;padding:8px 0;font-size:15px;font-weight:500;color:var(--ink-3);transition:color .2s var(--ease);}
.nav-list a::after{content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;background:var(--primary);border-radius:2px;transition:width .25s var(--ease);}
.nav-list a:hover{color:var(--primary);}
.nav-list a:hover::after{width:100%;}
.nav-list a.active{color:var(--primary);font-weight:650;}
.nav-list a.active::after{width:100%;}
.nav-cta{flex:none;height:42px;padding:0 20px;font-size:14.5px;}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);padding:22px 0 0;}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:#B9C6C3;}
.crumb .current{color:var(--primary);font-weight:600;}

/* ---------- Hero ---------- */
.hero{background:#fff;border-bottom:1px solid var(--line);padding-bottom:64px;}
.hero-inner{padding-top:26px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--primary);background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-badge);padding:6px 12px;}
.eyebrow::before{content:"";width:14px;height:2px;background:var(--sand);border-radius:2px;}
.hero h1{
  margin-top:20px;
  font-size:clamp(30px,4.1vw,48px);
  font-weight:650;line-height:1.2;letter-spacing:.012em;color:var(--ink);
}
.hero h1 em{font-style:normal;color:var(--primary);}
.hero-sub{margin-top:18px;font-size:17px;line-height:1.8;color:var(--ink-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-points{display:flex;flex-wrap:wrap;align-items:center;gap:0 14px;margin-top:28px;font-size:14px;color:var(--ink-2);}
.hero-points li{position:relative;padding-left:14px;}
.hero-points li::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:5px;height:5px;border-radius:50%;background:var(--sand);}
.hero-points li:first-child{padding-left:0;}
.hero-points li:first-child::before{display:none;}
.hero-visual{position:relative;}
.hero-frame{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);background:#fff;
  aspect-ratio:16/10;
}
.hero-frame img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;left:20px;bottom:20px;right:20px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:14px 16px;display:flex;align-items:center;gap:12px;
  box-shadow:var(--shadow-sm);
}
.hero-float .hf-icon{width:34px;height:34px;flex:none;border-radius:9px;background:var(--paper-2);display:grid;place-items:center;color:var(--primary);}
.hero-float .hf-icon svg{width:18px;height:18px;}
.hero-float strong{display:block;font-size:14px;font-weight:650;color:var(--ink);line-height:1.4;}
.hero-float span{font-size:12.5px;color:var(--ink-2);line-height:1.5;}
.hero-deco{position:absolute;left:-18px;top:36px;width:2px;height:96px;background:linear-gradient(180deg,var(--sand),rgba(201,164,106,0));border-radius:2px;}

/* ---------- 锚点标签行 ---------- */
.anchor-bar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:76px;z-index:1020;}
.anchor-inner{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:14px 0;}
.anchor-label{font-size:13px;font-weight:600;color:var(--ink-2);letter-spacing:.04em;margin-right:4px;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:var(--radius-badge);
  background:#fff;border:1px solid var(--line);
  font-size:13.5px;font-weight:600;color:var(--ink-3);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.chip:hover{border-color:var(--primary);color:var(--primary);background:var(--paper-2);transform:translateY(-1px);}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:680px;}
.section-head h2{font-size:clamp(24px,2.7vw,32px);font-weight:650;line-height:1.3;letter-spacing:.012em;}
.section-head p{margin-top:14px;font-size:16px;color:var(--ink-2);line-height:1.8;}
.badge-tag{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;color:var(--primary);background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius-badge);padding:4px 10px;letter-spacing:.03em;}

/* ---------- 功能矩阵 2×2 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:44px;}
.feature-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 28px;box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;height:100%;
  transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s var(--ease);
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#CBDCD8;}
.fc-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px;}
.fc-icon{width:46px;height:46px;border-radius:12px;background:var(--paper-2);display:grid;place-items:center;color:var(--primary);flex:none;}
.fc-icon svg{width:22px;height:22px;}
.fc-no{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--sand);font-variant-numeric:tabular-nums;}
.feature-card h3{font-size:21px;font-weight:650;line-height:1.4;color:var(--ink);}
.feature-card p{margin-top:12px;font-size:15.5px;line-height:1.8;color:var(--ink-2);}
.fc-foot{margin-top:auto;padding-top:20px;}
.fc-foot a{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--primary);text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px;}
.fc-foot a svg{width:14px;height:14px;transition:transform .22s var(--ease);}
.fc-foot a:hover svg{transform:translateX(3px);}

/* ---------- 横向说明带 ---------- */
.note-band{
  margin-top:36px;background:var(--primary);color:#fff;
  border-radius:var(--radius-card);padding:30px 34px;
  display:flex;align-items:center;gap:26px;flex-wrap:wrap;
  border:1px solid var(--primary-dark);
  position:relative;overflow:hidden;
}
.note-band::after{content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;border-radius:50%;border:1px solid rgba(255,255,255,.12);}
.nb-icon{width:46px;height:46px;flex:none;border-radius:12px;background:rgba(255,255,255,.12);display:grid;place-items:center;}
.nb-icon svg{width:22px;height:22px;stroke:#fff;}
.nb-text{flex:1 1 380px;min-width:240px;}
.nb-text strong{display:block;font-size:17px;font-weight:650;letter-spacing:.01em;}
.nb-text span{display:block;margin-top:6px;font-size:14.5px;line-height:1.75;color:rgba(255,255,255,.82);}
.note-band .btn{flex:none;background:#fff;color:var(--primary);border-color:#fff;}
.note-band .btn:hover{background:var(--paper-2);color:var(--primary-dark);transform:translateY(-1px);}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px;}
.flow-step{position:relative;padding-top:30px;}
.flow-step::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--line);}
.flow-step::after{content:"";position:absolute;top:-4px;left:0;width:9px;height:9px;border-radius:50%;background:var(--sand);box-shadow:0 0 0 4px rgba(201,164,106,.16);}
.flow-no{font-size:24px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:.04em;line-height:1;}
.flow-step h3{margin-top:14px;font-size:18px;font-weight:650;color:var(--ink);}
.flow-step p{margin-top:8px;font-size:14.5px;line-height:1.78;color:var(--ink-2);}

/* ---------- 功能区对照 ---------- */
.spec-aside h2{font-size:clamp(23px,2.5vw,30px);font-weight:650;line-height:1.32;}
.spec-aside p{margin-top:14px;font-size:15.5px;line-height:1.85;color:var(--ink-2);}
.spec-aside .btn{margin-top:24px;}
.spec-list{margin:0;}
.spec-item{display:flex;gap:18px;padding:22px 4px;border-top:1px solid var(--line);transition:background .22s var(--ease);}
.spec-item:last-child{border-bottom:1px solid var(--line);}
.spec-item:hover{background:var(--paper-2);}
.sp-dot{width:8px;height:8px;border-radius:50%;background:var(--primary-2);flex:none;margin-top:11px;}
.spec-item h3{font-size:17px;font-weight:650;color:var(--ink);display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.spec-item p{margin-top:6px;font-size:14.5px;line-height:1.78;color:var(--ink-2);}

/* ---------- FAQ ---------- */
.faq-wrap{margin-top:8px;}
.faq-item{border-top:1px solid var(--line);background:transparent;border-radius:10px;transition:background .22s var(--ease);}
.faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-item.is-open{background:#F1F5F4;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 18px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:16.5px;font-weight:600;line-height:1.6;color:var(--ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--primary);}
.faq-item.is-open .faq-q{color:var(--primary);}
.faq-sign{position:relative;width:16px;height:16px;flex:none;}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;top:50%;left:0;width:16px;height:2px;background:var(--primary-2);border-radius:2px;transform:translateY(-50%);transition:transform .25s var(--ease),opacity .25s var(--ease);}
.faq-sign::after{transform:translateY(-50%) rotate(90deg);}
.faq-item.is-open .faq-sign::after{transform:translateY(-50%) rotate(0deg);opacity:0;}
.faq-a{display:none;padding:0 18px 22px;font-size:15.5px;line-height:1.85;color:var(--ink-2);}
.faq-a p{max-width:720px;}
.faq-item.is-open .faq-a{display:block;}
.faq-aside-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-sm);
}
.faq-aside-card h3{font-size:17px;font-weight:650;color:var(--ink);}
.faq-aside-card p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--ink-2);}
.faq-aside-card .btn{margin-top:20px;width:100%;}

/* ---------- CTA ---------- */
.cta-band{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:44px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow-sm);position:relative;overflow:hidden;
}
.cta-band::before{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:linear-gradient(90deg,var(--sand),rgba(201,164,106,0));}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:650;line-height:1.36;}
.cta-band p{margin-top:12px;font-size:15.5px;color:var(--ink-2);max-width:560px;line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:none;}
.cta-meta{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:22px;font-size:14px;color:var(--ink-2);}
.cta-meta li{display:flex;align-items:center;gap:8px;}
.cta-meta svg{width:16px;height:16px;color:var(--primary-2);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--footer);color:#E9EFEE;padding:64px 0 26px;border-top:3px solid var(--sand);}
.footer-brand{display:flex;align-items:center;gap:11px;font-size:17px;color:#fff;letter-spacing:.01em;}
.fb-mark{width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.1);display:grid;place-items:center;flex:none;}
.fb-mark svg{width:20px;height:20px;color:#fff;}
.footer-brand em{font-style:normal;font-weight:500;font-size:12.5px;color:rgba(233,239,238,.72);margin-left:6px;letter-spacing:.06em;}
.footer-desc{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(233,239,238,.72);max-width:320px;}
.footer-title{font-size:15px;font-weight:650;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-links li{margin-bottom:11px;}
.footer-links a{font-size:14px;color:rgba(233,239,238,.74);transition:color .2s var(--ease);}
.footer-links a:hover{color:var(--sand);text-decoration:underline;text-underline-offset:4px;}
.footer-contact li{display:flex;gap:10px;font-size:14px;color:rgba(233,239,238,.74);margin-bottom:12px;line-height:1.7;}
.footer-contact svg{width:16px;height:16px;flex:none;margin-top:4px;color:var(--sand);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(233,239,238,.6);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-list{gap:18px;}
  .nav-list a{font-size:14.5px;}
  .nav-menu{gap:18px;}
  .hero h1{font-size:clamp(30px,3.6vw,42px);}
}
@media (max-width:991px){
  .nav-wrap{min-height:64px;}
  .nav-toggle{display:block;}
  .nav-menu{
    position:absolute;top:100%;left:0;right:0;display:none;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-md);padding:10px 0 18px;
  }
  .nav-menu.is-open{display:flex;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;padding:0 18px;}
  .nav-list a{padding:13px 0 13px 12px;border-left:3px solid transparent;font-size:15px;}
  .nav-list a::after{display:none;}
  .nav-list a.active{background:var(--paper-2);border-left-color:var(--primary);}
  .nav-cta{margin:14px 18px 0;height:46px;}
  .anchor-bar{top:64px;position:static;}
  .hero{padding-bottom:52px;}
  .hero-inner{padding-top:8px;}
  .hero-visual{margin-top:36px;}
  .hero-deco{display:none;}
  .section{padding:60px 0;}
  .feature-grid{gap:18px;}
  .flow{grid-template-columns:repeat(2,1fr);gap:28px 20px;}
  .cta-band{padding:34px 28px;}
  .spec-list{margin-top:32px;}
}
@media (max-width:767px){
  .brand-text{font-size:15.5px;}
  .brand-text span{font-size:11.5px;}
  .brand-mark{width:34px;height:34px;}
  .hero h1{font-size:clamp(27px,7vw,34px);}
  .hero-sub{font-size:15.5px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{flex:1 1 auto;min-width:150px;}
  .hero-points{font-size:13px;gap:0 12px;}
  .feature-grid{grid-template-columns:1fr;}
  .feature-card{padding:24px 22px;}
  .note-band{padding:24px 22px;gap:18px;}
  .note-band .btn{width:100%;}
  .flow{grid-template-columns:1fr;gap:26px;}
  .faq-q{font-size:15.5px;padding:18px 14px;}
  .faq-a{padding:0 14px 20px;font-size:14.8px;}
  .section-head p{font-size:15px;}
  .cta-actions .btn{flex:1 1 auto;min-width:150px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .site-footer{padding:48px 0 22px;}
}
@media (max-width:519px){
  .crumb{font-size:13px;padding-top:16px;}
  .section{padding:52px 0;}
  .hero-float{left:12px;right:12px;bottom:12px;padding:12px 12px;}
  .hero-float span{display:none;}
  .cta-band{padding:28px 20px;}
  .spec-item{gap:12px;padding:18px 2px;}
}

/* roulang page: category3 */
:root{
  --ink-blue:#1F4E5A;
  --ink-blue-deep:#173C46;
  --cloud-teal:#3E7C8A;
  --sand:#C9A46A;
  --paper:#F5F7F6;
  --paper-2:#EDF3F2;
  --card:#FFFFFF;
  --text:#182428;
  --muted:#5D6D70;
  --line:#DDE6E4;
  --footer:#16363C;
  --err:#A64B3C;
  --ok:#2F7A5C;
  --radius-card:18px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-sm:0 10px 30px rgba(20,50,55,.08);
  --shadow-lg:0 16px 40px rgba(20,50,55,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  font-size:16.5px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--ink-blue);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--cloud-teal)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:.01em;line-height:1.22;color:var(--text)}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
button{font-family:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,78,90,.28);border-radius:8px}

/* 容器 */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--ink-blue);border-radius:11px;
  box-shadow:0 6px 16px rgba(31,78,90,.22);
  transition:transform .25s var(--ease);
}
.brand-mark svg{width:21px;height:21px}
.brand:hover .brand-mark{transform:translateY(-1px)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:17px;font-weight:750;color:var(--ink-blue);letter-spacing:.01em}
.brand-text span{font-size:12.5px;font-weight:500;color:var(--muted);letter-spacing:.02em}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-list{display:flex;align-items:center;gap:22px}
.nav-list a{
  position:relative;display:block;padding:8px 0;
  font-size:15px;font-weight:500;color:var(--text);white-space:nowrap;
}
.nav-list a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--ink-blue);border-radius:2px;
  transition:width .24s var(--ease);
}
.nav-list a:hover{color:var(--ink-blue)}
.nav-list a:hover::after{width:100%}
.nav-list a.active{color:var(--ink-blue);font-weight:650}
.nav-list a.active::after{width:22px}
.nav-toggle{
  display:none;width:44px;height:44px;
  align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:10px;cursor:pointer;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;border-radius:2px;
  background:var(--ink-blue);transform:translateX(-50%);
  transition:transform .25s var(--ease),opacity .2s var(--ease);
}
.nav-toggle span{top:21px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateX(-50%) translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateX(-50%) translateY(-6px) rotate(-45deg)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-ink{background:var(--ink-blue);color:#fff;box-shadow:0 8px 20px rgba(31,78,90,.18)}
.btn-ink:hover{background:var(--ink-blue-deep);color:#fff;transform:translateY(-1px);box-shadow:0 12px 26px rgba(31,78,90,.24)}
.btn-ink:active{transform:none;box-shadow:0 6px 14px rgba(31,78,90,.2)}
.btn-line{background:#fff;color:var(--ink-blue);border-color:#C3D6D5}
.btn-line:hover{background:var(--paper-2);color:var(--ink-blue);transform:translateY(-1px);box-shadow:var(--shadow-sm)}
.btn-line:active{transform:none}
.nav-cta{height:42px;padding:0 18px;font-size:14.5px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--ink-blue);
  border-bottom:1px solid rgba(31,78,90,.28);padding-bottom:2px;
}
.link-arrow::after{content:"→";transition:transform .2s var(--ease)}
.link-arrow:hover{color:var(--ink-blue-deep);border-bottom-color:var(--ink-blue)}
.link-arrow:hover::after{transform:translateX(3px)}

/* 面包屑与标签 */
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--muted);margin-bottom:26px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--ink-blue)}
.crumb .sep{color:#A9BAB8}
.crumb .current{color:var(--ink-blue);font-weight:600}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:650;letter-spacing:.06em;
  color:var(--ink-blue);background:#fff;border:1px solid var(--line);
  padding:6px 12px;border-radius:6px;margin-bottom:18px;
}
.eyebrow::before{content:"";width:16px;height:2px;border-radius:2px;background:var(--sand)}
.badge-soft{
  display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.02em;
  color:var(--ink-blue);background:var(--paper-2);
  border:1px solid #D8E5E3;border-radius:6px;padding:4px 10px;
}

/* Hero */
.page-hero{
  position:relative;overflow:hidden;
  padding:44px 0 68px;
  background:var(--paper) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(245,247,246,.95) 0%,rgba(245,247,246,.88) 55%,rgba(245,247,246,.96) 100%);
}
.page-hero > .container{position:relative;z-index:1}
.page-hero h1{font-size:clamp(29px,3.7vw,46px);line-height:1.18;font-weight:650;margin-bottom:18px}
.page-hero h1 em{font-style:normal;color:var(--ink-blue);display:inline}
.lead-text{font-size:17px;line-height:1.8;color:var(--muted);max-width:56ch;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:22px}
.hero-note{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--muted)}
.hero-note span{display:inline-flex;align-items:center;gap:6px}
.hero-note i{width:5px;height:5px;border-radius:50%;background:var(--sand);display:inline-block}
.hero-frame{
  margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:12px;box-shadow:var(--shadow-sm);
}
.hero-frame img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img)}
.hero-frame figcaption{font-size:13px;color:var(--muted);padding:12px 4px 2px;line-height:1.6}

/* 锚点标签行 */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.chips a{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:500;color:var(--ink-blue);
  background:#fff;border:1px solid var(--line);border-radius:8px;
  padding:9px 14px;min-height:44px;
  transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.chips a::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--sand)}
.chips a:hover{background:#fff;border-color:#B9D2CF;transform:translateY(-2px);box-shadow:var(--shadow-sm)}

/* 板块 */
.section{padding:78px 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:70ch;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16.5px}
.section-head .eyebrow{margin-bottom:14px}

/* 场景交替图文 */
.scene-row{
  display:grid;grid-template-columns:1.02fr 1fr;gap:52px;align-items:center;
  padding:42px 0;border-top:1px solid var(--line);scroll-margin-top:96px;
}
.scene-row:first-of-type{border-top:0;padding-top:6px}
.scene-media{position:relative;margin:0}
.scene-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--radius-img);box-shadow:var(--shadow-sm);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease);
}
.scene-media:hover img{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.scene-index{
  position:absolute;left:16px;top:16px;
  background:rgba(255,255,255,.94);color:var(--ink-blue);
  font-size:12.5px;font-weight:700;letter-spacing:.08em;
  padding:5px 10px;border-radius:6px;border:1px solid var(--line);
}
.scene-body h3{font-size:clamp(20px,2.2vw,24px);margin:14px 0 12px;line-height:1.3}
.scene-body p{color:var(--muted);font-size:16px;line-height:1.8;max-width:52ch}
.scene-row.reverse .scene-media{order:2}
.tick-list{margin:20px 0 24px;display:grid;gap:11px}
.tick-list li{
  position:relative;padding-left:26px;
  font-size:15.5px;color:#33474B;line-height:1.7;
}
.tick-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:14px;height:2px;border-radius:2px;background:var(--sand);
}

/* 设备说明表 */
.table-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);overflow-x:auto;-webkit-overflow-scrolling:touch;
}
table.device-table{width:100%;min-width:640px;border-collapse:collapse;font-size:15.5px}
.device-table thead th{
  background:var(--paper-2);color:var(--ink-blue);
  font-size:14px;font-weight:650;letter-spacing:.03em;
  text-align:left;padding:16px 22px;border-bottom:1px solid var(--line);white-space:nowrap;
}
.device-table tbody td{padding:18px 22px;border-bottom:1px solid #EAF0EF;color:var(--muted);vertical-align:top;line-height:1.7}
.device-table tbody tr:last-child td{border-bottom:0}
.device-table tbody td:first-child{color:var(--text);font-weight:600}
.device-table tbody tr:hover td{background:#FAFCFB}

/* 提示条 */
.tip-bar{
  display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start;
  background:var(--paper-2);border:1px solid #D8E5E3;border-left:3px solid var(--sand);
  border-radius:12px;padding:20px 22px;margin-top:32px;
}
.tip-bar svg{width:22px;height:22px;color:var(--ink-blue);margin-top:2px}
.tip-bar p{font-size:15px;color:#33474B;line-height:1.8;margin:0}

/* FAQ */
.faq-layout{display:grid;grid-template-columns:.72fr 1.6fr;gap:56px;align-items:start}
.faq-aside h2{font-size:clamp(23px,2.5vw,30px);margin-bottom:14px}
.faq-aside p{color:var(--muted);font-size:15.5px;margin-bottom:22px}
.aside-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-sm);
}
.aside-card h4{font-size:15px;margin-bottom:8px;color:var(--ink-blue)}
.aside-card p{font-size:14px;color:var(--muted);margin-bottom:14px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line);transition:background .2s var(--ease)}
.faq-item:hover{background:#FAFCFB}
.faq-item.is-open{background:var(--paper-2)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  width:100%;background:transparent;border:0;text-align:left;
  padding:20px 6px;font-size:16.5px;font-weight:600;color:var(--text);cursor:pointer;
  transition:color .2s var(--ease);min-height:56px;
}
.faq-q:hover{color:var(--ink-blue)}
.faq-q .sign{position:relative;flex:0 0 18px;width:18px;height:18px}
.faq-q .sign::before,
.faq-q .sign::after{
  content:"";position:absolute;background:var(--ink-blue);border-radius:2px;
  transition:transform .26s var(--ease),opacity .2s var(--ease);
}
.faq-q .sign::before{left:0;top:8px;width:18px;height:2px}
.faq-q .sign::after{left:8px;top:0;width:2px;height:18px}
.faq-q[aria-expanded="true"] .sign::after{transform:rotate(90deg);opacity:0}
.faq-a{padding:0 6px 22px;max-width:66ch}
.faq-a p{font-size:15.5px;line-height:1.85;color:#3B4F53;margin:0}

/* CTA 带 */
.cta-band{
  position:relative;overflow:hidden;border-radius:22px;
  background:var(--footer) url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  color:#fff;padding:52px 48px;scroll-margin-top:96px;
}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(22,54,60,.84)}
.cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.5fr auto;gap:32px;align-items:center}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.4vw,30px);margin-bottom:12px;line-height:1.3}
.cta-inner p{color:rgba(255,255,255,.82);font-size:15.5px;max-width:56ch;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-band .btn-line{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.cta-band .btn-line:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.cta-band .btn-sand{background:var(--sand);color:#231A0C;box-shadow:0 10px 24px rgba(0,0,0,.2)}
.cta-band .btn-sand:hover{background:#D8B67F;color:#231A0C;transform:translateY(-1px)}

/* 页脚 */
.site-footer{
  margin-top:0;padding:58px 0 26px;
  background:var(--footer);color:#DCE8E6;
  border-top:2px solid var(--sand);
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:14px}
.fb-mark{
  width:34px;height:34px;flex:0 0 34px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.28);border-radius:10px;color:var(--sand);
}
.fb-mark svg{width:19px;height:19px}
.footer-brand em{font-style:normal;font-weight:500;font-size:13px;color:#A9C1BF;margin-left:4px}
.footer-desc{font-size:14px;line-height:1.85;color:#9FB6B4;max-width:34ch;margin:0}
.footer-title{font-size:14.5px;color:#fff;margin-bottom:16px;letter-spacing:.03em;font-weight:650}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:#A9C1BF}
.footer-links a:hover{color:var(--sand);text-decoration:underline;text-underline-offset:4px}
.footer-contact li{display:flex;gap:9px;align-items:flex-start;font-size:14px;color:#A9C1BF;margin-bottom:12px;line-height:1.7}
.footer-contact svg{width:17px;height:17px;flex:0 0 17px;margin-top:3px;color:var(--sand)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#8FA8A6;
}

/* 响应式 */
@media (max-width:1199.98px){
  .nav-list{gap:18px}
  .nav-menu{gap:20px}
  .nav-list a{font-size:14.5px}
  .scene-row{gap:40px}
}
@media (max-width:991.98px){
  .nav-wrap{min-height:64px}
  .nav-toggle{display:inline-flex}
  .nav-menu{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;align-items:stretch;
    gap:0;background:#fff;border-top:1px solid var(--line);
    box-shadow:0 18px 34px rgba(20,50,55,.12);
    padding:10px 24px 22px;
  }
  .nav-menu.is-open{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list li{border-bottom:1px solid #EDF3F2}
  .nav-list li:last-child{border-bottom:0}
  .nav-list a{padding:14px 0 14px 12px;font-size:16px;border-left:3px solid transparent}
  .nav-list a::after{display:none}
  .nav-list a.active{border-left-color:var(--ink-blue);background:var(--paper-2)}
  .nav-cta{margin-top:16px;height:46px;width:100%}
  .page-hero{padding:34px 0 54px}
  .hero-frame{margin-top:8px}
  .section{padding:60px 0}
  .scene-row{grid-template-columns:1fr;gap:26px;padding:34px 0}
  .scene-row.reverse .scene-media{order:0}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .cta-inner{grid-template-columns:1fr;gap:24px}
  .cta-band{padding:40px 30px;border-radius:18px}
  .site-footer{padding:46px 0 22px}
  .footer-desc{max-width:none}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .container{padding:0 18px}
  .page-hero h1{font-size:clamp(26px,7vw,34px)}
  .lead-text{font-size:16px}
  .hero-actions .btn{width:100%}
  .section{padding:52px 0}
  .section-head{margin-bottom:30px}
  .scene-body h3{margin-top:12px}
  .scene-media img{aspect-ratio:16/11}
  .tick-list li{font-size:15px}
  .tip-bar{grid-template-columns:1fr;gap:10px;padding:18px}
  .cta-band{padding:32px 20px;border-radius:16px}
  .cta-actions .btn{width:100%}
  .faq-q{font-size:16px;padding:18px 4px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:519.98px){
  .brand-text b{font-size:15.5px}
  .brand-text span{font-size:11.5px}
  .chips a{font-size:13.5px;padding:8px 12px}
  .cta-band{padding:26px 18px}
  .device-table{min-width:560px}
}

/* roulang page: category4 */
:root{
  --ink:#1F4E5A;
  --ink-deep:#173D47;
  --teal:#3E7C8A;
  --sand:#C9A46A;
  --paper:#F5F7F6;
  --card:#FFFFFF;
  --text:#182428;
  --muted:#5D6D70;
  --line:#DDE6E4;
  --footer:#16363C;
  --err:#A64B3C;
  --ok:#2F7A5C;
  --radius-card:18px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow:0 10px 30px rgba(20,50,55,.08);
  --shadow-hover:0 16px 40px rgba(20,50,55,.12);
  --space-section:92px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--teal);}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:.015em;line-height:1.22;color:var(--text);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(31,78,90,.35);outline-offset:2px;border-radius:6px;}

.container{max-width:1240px;padding-left:24px;padding-right:24px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#FCFDFC;
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;min-height:76px;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(150deg,var(--ink) 0%,var(--teal) 100%);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(31,78,90,.22);
}
.brand-mark svg{width:21px;height:21px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text b{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.02em;}
.brand-text span{font-size:12.5px;font-weight:500;color:var(--muted);letter-spacing:.06em;}
.nav-menu{display:flex;align-items:center;gap:26px;}
.nav-list{display:flex;align-items:center;gap:24px;}
.nav-list a{
  position:relative;display:inline-block;
  font-size:15px;color:#2C3B3E;padding:6px 0;
}
.nav-list a::after{
  content:"";position:absolute;left:0;bottom:-2px;
  width:0;height:2px;background:var(--sand);border-radius:2px;
  transition:width .22s ease;
}
.nav-list a:hover{color:var(--ink);}
.nav-list a:hover::after{width:100%;}
.nav-list a.active{color:var(--ink);font-weight:600;}
.nav-list a.active::after{width:22px;background:var(--ink);}
.nav-cta{
  padding:9px 20px;font-size:14.5px;border-radius:var(--radius-btn);
}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:#fff;border-radius:10px;position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--ink);
  border-radius:2px;content:"";transform:translateX(-50%);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- buttons ---------- */
.btn-ink{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--ink);color:#fff;border:1px solid var(--ink);
  padding:12px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease;
  box-shadow:0 6px 18px rgba(31,78,90,.16);
}
.btn-ink:hover{background:var(--ink-deep);border-color:var(--ink-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(31,78,90,.22);}
.btn-ink:active{transform:translateY(0);box-shadow:0 4px 12px rgba(31,78,90,.18);}
.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--ink);border:1px solid var(--ink);
  padding:12px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  transition:background .18s ease,transform .18s ease,color .18s ease;
}
.btn-line:hover{background:#EDF3F2;color:var(--ink-deep);transform:translateY(-1px);}
.btn-line:active{transform:translateY(0);}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--ink);
  border-bottom:1px solid rgba(31,78,90,.3);padding-bottom:2px;
}
.link-more:hover{color:var(--teal);border-bottom-color:var(--teal);}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:#FCFDFC;border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:14px 0;font-size:14px;color:var(--muted);}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--ink);}
.crumb .sep{color:#C3D2CF;}
.crumb .current{color:var(--ink);font-weight:600;}

/* ---------- hero ---------- */
.hero-band{
  position:relative;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(245,247,246,.97) 0%,rgba(245,247,246,.92) 48%,rgba(245,247,246,.72) 100%),
    url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center right;
  border-bottom:1px solid var(--line);
}
.hero-band::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,164,106,.55),transparent);
}
.hero-inner{padding:64px 0 68px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--teal);
  background:#fff;border:1px solid var(--line);border-radius:6px;
  padding:6px 12px;margin-bottom:20px;
}
.eyebrow::before{content:"";width:16px;height:2px;background:var(--sand);border-radius:2px;}
.hero-inner h1{
  font-size:clamp(30px,4.1vw,46px);
  font-weight:650;line-height:1.18;color:var(--ink-deep);
  max-width:760px;
}
.hero-inner h1 .h1-thin{display:block;font-weight:600;color:var(--ink);font-size:.62em;margin-top:10px;letter-spacing:.02em;}
.hero-lede{
  margin-top:20px;max-width:620px;font-size:16.5px;line-height:1.8;color:#3A4A4D;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-trust{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;
  margin-top:28px;font-size:13.5px;color:var(--muted);
}
.hero-trust span{display:inline-flex;align-items:center;gap:6px;}
.hero-trust span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--sand);}
.hero-trust span:first-child::before{background:var(--teal);}

/* ---------- section basics ---------- */
.section{padding:var(--space-section) 0;}
.section.tight{padding:64px 0;}
.sec-head{max-width:760px;margin-bottom:38px;}
.sec-label{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.1em;
  color:var(--teal);margin-bottom:12px;
}
.sec-head h2{font-size:clamp(24px,3vw,32px);font-weight:650;color:var(--ink-deep);}
.sec-head p{margin-top:14px;font-size:16px;line-height:1.8;color:var(--muted);}

/* ---------- checklist card ---------- */
.check-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow);
}
.check-card h2{font-size:20px;font-weight:650;color:var(--ink-deep);margin-bottom:6px;}
.check-card .cc-sub{font-size:13.5px;color:var(--muted);margin-bottom:20px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:13px 0;border-top:1px solid var(--line);
  font-size:15px;line-height:1.65;color:#2C3B3E;
}
.check-list li:first-child{border-top:none;padding-top:4px;}
.check-list .tick{
  flex:0 0 22px;width:22px;height:22px;border-radius:6px;
  background:rgba(62,124,138,.1);color:var(--teal);
  display:inline-flex;align-items:center;justify-content:center;margin-top:2px;
}
.check-list .tick svg{width:13px;height:13px;}
.cc-foot{
  margin-top:20px;padding-top:18px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--muted);line-height:1.7;
}
.cc-foot a{font-weight:600;border-bottom:1px solid rgba(31,78,90,.3);}

/* ---------- explain list ---------- */
.explain-item{
  display:flex;gap:22px;padding:28px 0;border-top:1px solid var(--line);
}
.explain-item:first-child{border-top:none;padding-top:0;}
.ex-no{
  flex:0 0 auto;font-size:14px;font-weight:700;color:var(--sand);
  font-variant-numeric:tabular-nums;letter-spacing:.06em;
  padding-top:5px;min-width:34px;
}
.explain-item h3{font-size:21px;font-weight:600;color:var(--ink-deep);}
.explain-item p{margin-top:10px;font-size:15.5px;line-height:1.85;color:#3A4A4D;}
.explain-item ul{margin-top:14px;display:grid;gap:8px;}
.explain-item ul li{
  position:relative;padding-left:18px;font-size:15px;line-height:1.75;color:var(--muted);
}
.explain-item ul li::before{
  content:"";position:absolute;left:0;top:.66em;
  width:6px;height:6px;border-radius:50%;border:1.5px solid var(--teal);
}

/* ---------- figure ---------- */
.figure-card{
  margin:32px 0 0;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow);
}
.figure-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.figure-card figcaption{
  padding:14px 20px 16px;font-size:13px;color:var(--muted);line-height:1.7;
  border-top:1px solid var(--line);
}

/* ---------- notice ---------- */
.notice-box{
  margin-top:28px;display:flex;gap:14px;
  background:#EDF3F2;border:1px solid #D3E2DF;border-radius:14px;
  padding:20px 22px;
}
.notice-box .nb-icon{
  flex:0 0 26px;width:26px;height:26px;color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;margin-top:2px;
}
.notice-box strong{display:block;font-size:15px;color:var(--ink-deep);margin-bottom:6px;}
.notice-box p{font-size:14.5px;line-height:1.8;color:#3A4A4D;}

/* ---------- compliance strip ---------- */
.strip-band{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:#FBFDFC;
}
.strip-grid{display:grid;grid-template-columns:repeat(3,1fr);}
.strip-item{
  padding:32px 28px;border-left:1px solid var(--line);
}
.strip-item:first-child{border-left:none;padding-left:0;}
.strip-item:last-child{padding-right:0;}
.strip-item .si-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--teal);letter-spacing:.06em;margin-bottom:10px;
}
.strip-item .si-label::before{content:"";width:14px;height:2px;background:var(--sand);border-radius:2px;}
.strip-item h3{font-size:18px;font-weight:600;color:var(--ink-deep);}
.strip-item p{margin-top:8px;font-size:14.5px;line-height:1.8;color:var(--muted);}

/* ---------- mini faq ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-side h2{font-size:clamp(24px,2.8vw,30px);color:var(--ink-deep);}
.faq-side p{margin-top:14px;font-size:15.5px;line-height:1.8;color:var(--muted);}
.faq-side .side-card{
  margin-top:26px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:20px 22px;box-shadow:var(--shadow);
}
.faq-side .side-card h3{font-size:16px;color:var(--ink-deep);margin-bottom:8px;}
.faq-side .side-card p{font-size:14px;margin-top:0;}
.faq-side .side-card .link-more{margin-top:14px;}

.acc-item{border-top:1px solid var(--line);}
.acc-item:last-child{border-bottom:1px solid var(--line);}
.acc-btn{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  background:transparent;border:none;text-align:left;
  padding:20px 4px;font-size:16.5px;font-weight:600;color:var(--text);
  cursor:pointer;transition:color .18s ease,background .18s ease;
}
.acc-btn:hover{color:var(--ink);}
.acc-btn .acc-ico{
  flex:0 0 22px;width:22px;height:22px;position:relative;
  border:1px solid #C3D2CF;border-radius:50%;transition:border-color .18s ease,background .18s ease;
}
.acc-btn .acc-ico::before,
.acc-btn .acc-ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);
  border-radius:2px;transform:translate(-50%,-50%);transition:opacity .2s ease,background .2s ease;
}
.acc-btn .acc-ico::before{width:10px;height:1.6px;}
.acc-btn .acc-ico::after{width:1.6px;height:10px;}
.acc-btn[aria-expanded="true"]{color:var(--ink-deep);}
.acc-btn[aria-expanded="true"] .acc-ico{background:var(--ink);border-color:var(--ink);}
.acc-btn[aria-expanded="true"] .acc-ico::before,
.acc-btn[aria-expanded="true"] .acc-ico::after{background:#fff;}
.acc-btn[aria-expanded="true"] .acc-ico::after{opacity:0;}
.acc-panel{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
  background:transparent;
}
.acc-panel .acc-inner{
  padding:0 4px 22px;font-size:15.5px;line-height:1.85;color:#3A4A4D;
}
.acc-item.open{background:#F2F6F5;border-radius:12px;}
.acc-item.open .acc-btn{padding-left:16px;padding-right:16px;}
.acc-item.open .acc-inner{padding-left:16px;padding-right:16px;}

/* ---------- contact ---------- */
.contact-band{
  position:relative;overflow:hidden;
  background:linear-gradient(120deg,#F2F7F6 0%,#F7F9F8 55%,rgba(245,247,246,.9) 100%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  border-top:1px solid var(--line);
}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start;}
.contact-info h2{font-size:clamp(24px,3vw,32px);color:var(--ink-deep);}
.contact-info > p{margin-top:16px;font-size:15.5px;line-height:1.85;color:#3A4A4D;max-width:460px;}
.info-list{margin-top:26px;display:grid;gap:14px;}
.info-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:14.5px;line-height:1.7;color:#2C3B3E;
}
.info-list .ii{
  flex:0 0 24px;width:24px;height:24px;border-radius:7px;
  background:#fff;border:1px solid var(--line);color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;margin-top:1px;
}
.info-list .ii svg{width:13px;height:13px;}
.form-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 28px;box-shadow:var(--shadow);
}
.form-card h3{font-size:19px;color:var(--ink-deep);margin-bottom:6px;}
.form-card .fc-sub{font-size:13.5px;color:var(--muted);margin-bottom:22px;}
.f-group{margin-bottom:18px;}
.f-group label{display:block;font-size:14px;font-weight:600;color:#2C3B3E;margin-bottom:8px;}
.f-control{
  width:100%;height:46px;padding:0 14px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-btn);
  font-size:15px;color:var(--text);transition:border-color .18s ease,box-shadow .18s ease;
}
textarea.f-control{height:auto;min-height:110px;padding:12px 14px;line-height:1.7;resize:vertical;}
.f-control:focus{
  outline:none;border-color:var(--ink);
  box-shadow:0 0 0 4px rgba(31,78,90,.12);
}
.f-control::placeholder{color:#9BAAA8;}
.privacy-note{margin-top:14px;font-size:13px;line-height:1.7;color:var(--muted);}
.form-card .btn-ink{width:100%;margin-top:6px;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--footer);color:#E6EFEE;padding:62px 0 0;
  border-top:3px solid var(--sand);
}
.site-footer .row{gx:0;}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;color:#fff;letter-spacing:.02em;
}
.footer-brand .fb-mark{
  width:34px;height:34px;border-radius:10px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
  display:inline-flex;align-items:center;justify-content:center;color:#fff;
}
.footer-brand .fb-mark svg{width:18px;height:18px;}
.footer-brand em{font-style:normal;font-weight:500;color:#B9CFCC;margin-left:6px;font-size:15px;}
.footer-desc{
  margin-top:16px;max-width:340px;
  font-size:14px;line-height:1.85;color:#A9C0BD;
}
.footer-title{font-size:14.5px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-links{display:grid;gap:11px;}
.footer-links a{font-size:14px;color:#A9C0BD;}
.footer-links a:hover{color:#E4CE9E;text-decoration:underline;text-underline-offset:3px;}
.footer-contact{display:grid;gap:13px;}
.footer-contact li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14px;line-height:1.7;color:#A9C0BD;
}
.footer-contact svg{width:15px;height:15px;flex:0 0 15px;margin-top:4px;color:#8FB2AE;}
.footer-bottom{
  margin-top:48px;padding:20px 0 26px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:#8FA9A6;
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  :root{--space-section:78px;}
  .nav-menu{gap:18px;}
  .nav-list{gap:18px;}
  .nav-list a{font-size:14.5px;}
  .hero-inner{padding:54px 0 58px;}
}
@media (max-width:991.98px){
  :root{--space-section:64px;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-menu{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#FCFDFC;border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    padding:12px 24px 22px;
    box-shadow:0 18px 36px rgba(20,50,55,.1);
  }
  .nav-menu.open{display:flex;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;}
  .nav-list li{border-bottom:1px solid var(--line);}
  .nav-list li:last-child{border-bottom:none;}
  .nav-list a{display:block;padding:14px 0 14px 14px;font-size:15.5px;}
  .nav-list a::after{display:none;}
  .nav-list a.active{
    color:var(--ink);font-weight:600;
    border-left:3px solid var(--ink);margin-left:-14px;padding-left:11px;
  }
  .nav-cta{margin-top:16px;width:100%;padding:13px 20px;}
  .check-card{position:static;margin-bottom:32px;}
  .faq-wrap{grid-template-columns:1fr;gap:34px;}
  .contact-grid{grid-template-columns:1fr;gap:36px;}
  .strip-grid{grid-template-columns:1fr;}
  .strip-item{padding:24px 0;border-left:none;border-top:1px solid var(--line);}
  .strip-item:first-child{border-top:none;padding-top:0;}
  .strip-item:last-child{padding-bottom:0;}
}
@media (max-width:767.98px){
  :root{--space-section:54px;--radius-card:16px;}
  .container{padding-left:18px;padding-right:18px;}
  .nav-wrap{min-height:64px;}
  .brand-mark{width:34px;height:34px;border-radius:9px;}
  .brand-text b{font-size:15.5px;}
  .brand-text span{font-size:11.5px;}
  .hero-inner{padding:40px 0 44px;}
  .hero-inner h1{font-size:clamp(27px,7.2vw,34px);}
  .hero-lede{font-size:15.5px;margin-top:16px;}
  .hero-actions{margin-top:24px;}
  .hero-actions .btn-ink,
  .hero-actions .btn-line{width:100%;padding:13px 20px;}
  .hero-trust{gap:8px 14px;font-size:13px;}
  .sec-head{margin-bottom:28px;}
  .explain-item{flex-direction:column;gap:8px;padding:24px 0;}
  .ex-no{padding-top:0;}
  .explain-item h3{font-size:19px;}
  .form-card{padding:24px 20px;}
  .check-card{padding:22px 20px;}
  .footer-brand{font-size:16px;}
  .footer-bottom{margin-top:36px;font-size:12.5px;flex-direction:column;}
  .acc-btn{font-size:15.5px;padding:18px 2px;}
  .acc-panel .acc-inner{font-size:15px;}
}
@media (max-width:519.98px){
  .hero-trust span{width:100%;}
  .hero-trust span::before{margin-right:2px;}
}

/* roulang page: category5 */
:root{
  --teal:#1F4E5A;
  --teal-deep:#17404a;
  --teal-2:#3E7C8A;
  --sand:#C9A46A;
  --paper:#F5F7F6;
  --mist:#EEF3F2;
  --card:#FFFFFF;
  --ink:#182428;
  --muted:#5D6D70;
  --line:#DDE6E4;
  --footer:#16363C;
  --err:#A64B3C;
  --ok:#2F7A5C;
  --r-card:18px;
  --r-btn:10px;
  --r-img:14px;
  --r-badge:6px;
  --shadow:0 10px 30px rgba(20,50,55,.08);
  --shadow-lg:0 16px 40px rgba(20,50,55,.12);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--card);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--teal);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--teal-deep);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5{margin:0;font-weight:650;line-height:1.25;letter-spacing:.01em;color:var(--ink);}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(31,78,90,.22);}

.container{max-width:1240px;padding-left:24px;padding-right:24px;}
@media (max-width:575.98px){.container{padding-left:18px;padding-right:18px;}}

/* ============ 标题与通用 ============ */
.section{padding:88px 0;}
.section-sm{padding:64px 0;}
@media (max-width:991.98px){.section{padding:64px 0;}.section-sm{padding:48px 0;}}
@media (max-width:575.98px){.section{padding:52px 0;}.section-sm{padding:40px 0;}}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--teal-2);text-transform:none;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--sand);border-radius:2px;}
.sec-head{max-width:720px;margin-bottom:40px;}
.sec-head h2{font-size:30px;margin-bottom:12px;}
.sec-head p{color:var(--muted);font-size:16px;}
@media (max-width:767.98px){.sec-head h2{font-size:25px;}.sec-head{margin-bottom:28px;}}

.badge-soft{
  display:inline-block;
  font-size:12.5px;font-weight:600;
  color:var(--teal);
  background:var(--mist);
  border:1px solid var(--line);
  border-radius:var(--r-badge);
  padding:3px 10px;
  line-height:1.6;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1.4;
  border-radius:var(--r-btn);
  padding:11px 22px;
  border:1px solid transparent;
  transition:background .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn:focus,.btn:active{box-shadow:none;}
.btn:focus-visible{box-shadow:0 0 0 3px rgba(31,78,90,.22);}
.btn-ink{background:var(--teal);color:#fff;border-color:var(--teal);}
.btn-ink:hover{background:var(--teal-deep);border-color:var(--teal-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px rgba(20,50,55,.18);}
.btn-ink:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#fff;color:var(--teal);border-color:#c6d6d6;}
.btn-ghost:hover{background:var(--paper);color:var(--teal-deep);border-color:var(--teal-2);}
.btn-sm{padding:9px 18px;font-size:14px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:76px;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto;}
.brand:hover{color:var(--ink);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(140deg,var(--teal-2),var(--teal));
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px rgba(31,78,90,.22);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{display:inline-flex;align-items:baseline;gap:5px;white-space:nowrap;}
.brand-text b{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--ink);}
.brand-text span{font-size:12.5px;font-weight:500;color:var(--muted);letter-spacing:.01em;}
.nav-menu{display:flex;align-items:center;gap:26px;flex:1 1 auto;justify-content:flex-end;}
.nav-list{display:flex;align-items:center;gap:24px;flex-wrap:nowrap;}
.nav-list a{
  position:relative;display:inline-block;
  font-size:15px;color:var(--ink);padding:6px 0;white-space:nowrap;
}
.nav-list a::after{
  content:"";position:absolute;left:50%;bottom:-3px;
  width:0;height:2px;background:var(--teal-2);
  transform:translateX(-50%);
  transition:width .24s ease;
}
.nav-list a:hover{color:var(--teal);}
.nav-list a:hover::after{width:100%;}
.nav-list a.active{color:var(--teal);font-weight:600;}
.nav-list a.active::after{width:22px;background:var(--sand);}
.nav-cta{flex:0 0 auto;padding:9px 18px;font-size:14.5px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;border:1px solid var(--line);
  background:#fff;border-radius:10px;position:relative;
  align-items:center;justify-content:center;
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:var(--paper);border-color:#c6d6d6;}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;
  position:absolute;left:50%;transform:translateX(-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";top:-6px;left:0;transform:none;}
.nav-toggle span::after{content:"";top:6px;left:0;transform:none;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:rotate(45deg);top:0;}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0;}

@media (max-width:1199.98px){
  .nav-list{gap:18px;}
  .nav-list a{font-size:14.5px;}
  .nav-menu{gap:18px;}
}
@media (max-width:991.98px){
  .nav-wrap{height:64px;}
  .nav-toggle{display:inline-flex;}
  .nav-menu{
    position:absolute;left:0;right:0;top:100%;
    display:none;flex-direction:column;align-items:stretch;
    gap:0;background:#fff;
    border-top:1px solid var(--line);
    padding:10px 20px 20px;
    box-shadow:var(--shadow-lg);
  }
  .nav-menu.open{display:flex;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;}
  .nav-list a{padding:13px 12px;font-size:15.5px;border-bottom:1px solid var(--line);display:block;}
  .nav-list a::after{display:none;}
  .nav-list a.active{
    color:var(--teal);
    border-left:3px solid var(--teal);
    padding-left:14px;
    background:var(--mist);
  }
  .nav-cta{margin-top:16px;align-self:flex-start;padding:11px 22px;}
}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--muted);margin-bottom:26px;
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--teal);}
.crumb .sep{color:#b7c6c4;}
.crumb .cur{color:var(--teal);font-weight:600;}

/* ============ Hero ============ */
.page-hero{
  background:var(--paper);
  border-bottom:1px solid var(--line);
  padding:34px 0 56px;
}
.hero-title{font-size:42px;line-height:1.2;margin-bottom:16px;}
.hero-sub{font-size:17px;color:var(--muted);max-width:640px;line-height:1.8;}
@media (max-width:1199.98px){.hero-title{font-size:36px;}}
@media (max-width:767.98px){.hero-title{font-size:30px;}.page-hero{padding:26px 0 42px;}.hero-sub{font-size:15.5px;}}
@media (max-width:575.98px){.hero-title{font-size:26px;}}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag-row a{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--teal);
  background:#fff;border:1px solid var(--line);
  border-radius:8px;padding:7px 14px;
  transition:background .2s ease,border-color .2s ease,color .2s ease,transform .2s ease;
}
.tag-row a:hover{background:var(--mist);border-color:#c6d6d6;transform:translateY(-1px);color:var(--teal-deep);}
.tag-row a:focus-visible{box-shadow:0 0 0 3px rgba(31,78,90,.22);}

.check-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow);padding:26px 26px 24px;
  border-top:3px solid var(--sand);
}
.check-card h2{font-size:18px;margin-bottom:6px;}
.check-card .cc-note{font-size:13.5px;color:var(--muted);margin-bottom:16px;}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;
  font-size:14.5px;color:#33474b;padding:9px 0;
  border-top:1px dashed var(--line);
}
.check-list li:first-child{border-top:0;padding-top:0;}
.check-list .num{
  flex:0 0 22px;height:22px;border-radius:6px;
  background:var(--mist);color:var(--teal);
  font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
  margin-top:2px;
}

/* ============ FAQ 主体 ============ */
.side-sticky{position:sticky;top:100px;}
@media (max-width:991.98px){.side-sticky{position:static;margin-bottom:32px;}}

.help-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow);overflow:hidden;
}
.help-card .hc-media{aspect-ratio:16/10;overflow:hidden;background:var(--mist);}
.help-card .hc-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.help-card:hover .hc-media img{transform:scale(1.03);}
.help-card .hc-body{padding:22px 24px 24px;}
.help-card h2{font-size:19px;margin-bottom:8px;}
.help-card p{font-size:14.5px;color:var(--muted);margin-bottom:16px;line-height:1.8;}

.q-nav{
  margin-top:20px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 22px;
  box-shadow:var(--shadow);
}
.q-nav h3{font-size:14px;letter-spacing:.06em;color:var(--teal-2);margin-bottom:12px;}
.q-nav li a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:14.5px;color:var(--ink);
  padding:10px 2px;
  border-top:1px solid var(--line);
  transition:color .2s ease,padding-left .2s ease;
}
.q-nav li:first-child a{border-top:0;}
.q-nav li a:hover{color:var(--teal);padding-left:6px;}
.q-nav li a span{font-size:12.5px;color:var(--muted);}

.faq-group{margin-bottom:42px;scroll-margin-top:100px;}
.faq-group:last-child{margin-bottom:0;}
.faq-group-head{display:flex;align-items:center;gap:12px;margin-bottom:6px;}
.faq-group-head h2{font-size:24px;}
@media (max-width:767.98px){.faq-group-head h2{font-size:20px;}}
.faq-group-head .g-index{
  font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  font-size:13px;font-weight:700;color:var(--sand);letter-spacing:.04em;
}
.faq-group-desc{font-size:14.5px;color:var(--muted);margin-bottom:14px;}

.faq-acc .accordion-item{
  background:transparent;border:0;border-top:1px solid var(--line);border-radius:0;
}
.faq-acc .accordion-item:last-child{border-bottom:1px solid var(--line);}
.faq-acc .accordion-button{
  background:transparent;color:var(--ink);
  font-size:16.5px;font-weight:600;line-height:1.6;
  padding:17px 16px;
  border-radius:0;box-shadow:none;
  transition:background .22s ease,color .22s ease;
}
.faq-acc .accordion-button:hover{color:var(--teal);background:#FAFCFB;}
.faq-acc .accordion-button:not(.collapsed){
  background:var(--mist);color:var(--teal);
}
.faq-acc .accordion-button:focus{box-shadow:none;}
.faq-acc .accordion-button:focus-visible{box-shadow:inset 0 0 0 2px rgba(31,78,90,.35);}
.faq-acc .accordion-button::after{
  width:16px;height:16px;flex:0 0 16px;margin-left:auto;
  background:
    linear-gradient(var(--teal-2),var(--teal-2)) center/16px 2px no-repeat,
    linear-gradient(var(--teal-2),var(--teal-2)) center/2px 16px no-repeat;
  transform:none;
  transition:background .22s ease,transform .22s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{
  background:linear-gradient(var(--teal),var(--teal)) center/16px 2px no-repeat;
  transform:rotate(180deg);
}
.faq-acc .accordion-body{
  background:var(--mist);color:#33474b;
  font-size:15.5px;line-height:1.85;
  padding:0 20px 20px 16px;
}
.faq-acc .accordion-body p{margin-bottom:10px;}
.faq-acc .accordion-body p:last-child{margin-bottom:0;}
.faq-acc .accordion-body strong{color:var(--teal);font-weight:600;}

/* ============ 提示框 ============ */
.notice{
  display:flex;gap:14px;align-items:flex-start;
  background:#FBF7EE;
  border:1px solid #EADFC7;
  border-left:3px solid var(--sand);
  border-radius:12px;
  padding:18px 20px;
  margin-top:36px;
}
.notice svg{flex:0 0 22px;width:22px;height:22px;color:#9a7d43;margin-top:2px;}
.notice h3{font-size:15.5px;margin-bottom:4px;}
.notice p{font-size:14.5px;color:#5d5140;line-height:1.8;}

/* ============ CTA 带 ============ */
.cta-band{
  background:var(--teal);
  border-radius:var(--r-card);
  padding:44px 44px;
  color:#fff;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;
  width:260px;height:260px;border-radius:50%;
  background:rgba(201,164,106,.14);
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px;}
.cta-band p{color:#D7E5E4;font-size:15.5px;max-width:620px;line-height:1.8;}
.cta-band .btn-ink{background:#fff;color:var(--teal);border-color:#fff;}
.cta-band .btn-ink:hover{background:var(--sand);border-color:var(--sand);color:#243033;}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}
@media (max-width:767.98px){
  .cta-band{padding:32px 24px;}
  .cta-band h2{font-size:22px;}
  .cta-actions .btn{width:100%;}
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--footer);
  color:#D6E3E2;
  border-top:2px solid var(--sand);
  padding:60px 0 0;
  margin-top:0;
}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:17px;font-weight:700;color:#fff;margin-bottom:14px;
}
.footer-brand em{font-style:normal;font-size:12.5px;font-weight:500;color:#A9C3C1;margin-left:4px;}
.fb-mark{
  width:32px;height:32px;border-radius:9px;
  background:rgba(255,255,255,.1);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--sand);
}
.fb-mark svg{width:18px;height:18px;}
.footer-desc{font-size:14px;color:#9FB8B6;line-height:1.85;max-width:320px;}
.footer-title{font-size:14.5px;color:#fff;margin-bottom:16px;font-weight:600;letter-spacing:.02em;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:#A9C3C1;}
.footer-links a:hover{color:var(--sand);text-decoration:underline;text-underline-offset:3px;}
.footer-contact li{
  display:flex;gap:9px;align-items:flex-start;
  font-size:14px;color:#A9C3C1;margin-bottom:12px;line-height:1.75;
}
.footer-contact svg{flex:0 0 17px;width:17px;height:17px;margin-top:3px;color:var(--sand);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  border-top:1px solid rgba(255,255,255,.12);
  margin-top:44px;padding:20px 0 24px;
  font-size:13px;color:#8CA8A6;
}
@media (max-width:767.98px){
  .site-footer{padding-top:44px;}
  .footer-bottom{margin-top:30px;font-size:12.5px;}
}

/* roulang page: category6 */
:root{
  --primary:#1F4E5A;
  --primary-dark:#173F49;
  --primary-2:#3E7C8A;
  --sand:#C9A46A;
  --paper:#F5F7F6;
  --paper-2:#EEF3F2;
  --card:#FFFFFF;
  --ink:#182428;
  --muted:#5D6D70;
  --line:#DDE6E4;
  --footer:#16363C;
  --danger:#A64B3C;
  --ok:#2F7A5C;
  --radius-card:18px;
  --radius-btn:10px;
  --radius-img:14px;
  --shadow-soft:0 10px 30px rgba(20,50,55,.08);
  --shadow-hover:0 16px 40px rgba(20,50,55,.12);
  --container:1240px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",-apple-system,"Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.75;
  color:var(--ink);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:var(--primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--primary-2);}
button{font-family:inherit;}
h1,h2,h3,h4,p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(31,78,90,.35);outline-offset:2px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .15s ease,box-shadow .2s ease;
}
.btn:active{transform:translateY(0);}
.btn-primary,.btn-ink{
  background:var(--primary);
  color:#fff;
  border-color:var(--primary);
  box-shadow:0 6px 16px rgba(31,78,90,.18);
}
.btn-primary:hover,.btn-ink:hover{
  background:var(--primary-dark);
  border-color:var(--primary-dark);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 10px 24px rgba(31,78,90,.22);
}
.btn-outline{
  background:#fff;
  color:var(--primary);
  border-color:#B9CDCB;
}
.btn-outline:hover{
  background:var(--paper);
  border-color:var(--primary-2);
  color:var(--primary);
  transform:translateY(-1px);
}
.btn-text{
  height:auto;
  padding:0;
  background:transparent;
  color:var(--primary);
  border:0;
  text-decoration:underline;
  text-underline-offset:4px;
  font-weight:600;
}
.btn-text:hover{color:var(--primary-2);}
.btn-block{width:100%;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.site-header .container{position:relative;}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:76px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:34px;
  height:34px;
  border-radius:9px;
  background:var(--primary);
  display:grid;
  place-items:center;
  flex-shrink:0;
}
.brand-mark svg{width:19px;height:19px;}
.brand-text{
  display:inline-flex;
  align-items:baseline;
  gap:2px;
  font-size:18px;
  line-height:1.2;
  letter-spacing:.01em;
}
.brand-text b{font-weight:700;color:var(--primary);}
.brand-text span{font-weight:500;color:var(--primary-2);}

.nav-menu{
  display:flex;
  align-items:center;
  gap:22px;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:24px;
}
.nav-list a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:var(--ink);
  white-space:nowrap;
}
.nav-list a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--primary);
  border-radius:2px;
  transition:width .22s ease;
}
.nav-list a:hover{color:var(--primary);}
.nav-list a:hover::after{width:100%;}
.nav-list a.active{color:var(--primary);font-weight:600;}
.nav-list a.active::after{width:100%;}
.nav-cta{height:42px;padding:0 18px;font-size:14.5px;}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  cursor:pointer;
  padding:0;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:18px;
  height:2px;
  background:var(--primary);
  border-radius:2px;
  transform:translateX(-50%);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{content:"";left:0;transform:none;top:-6px;}
.nav-toggle span::after{content:"";left:0;transform:none;top:6px;}

/* ---------- 面包屑 ---------- */
.crumb{padding:20px 0 0;}
.crumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--muted);
}
.crumb li{display:inline-flex;align-items:center;gap:8px;}
.crumb li + li::before{content:"/";color:#B9CDCB;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--primary);}
.crumb .current{color:var(--primary);font-weight:600;}

/* ---------- Hero ---------- */
.page-hero{padding:36px 0 72px;}
.hero-grid{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:52px;
  align-items:center;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  border-radius:6px;
  background:#fff;
  border:1px solid var(--line);
  font-size:13px;
  letter-spacing:.06em;
  color:var(--primary-2);
}
.eyebrow i{
  width:6px;height:6px;border-radius:50%;
  background:var(--sand);
  display:inline-block;
}
.page-hero h1{
  margin-top:20px;
  font-size:clamp(30px,3.3vw,44px);
  font-weight:650;
  line-height:1.2;
  letter-spacing:.012em;
  color:var(--ink);
}
.page-hero h1 em{
  font-style:normal;
  color:var(--primary);
}
.hero-lead{
  margin-top:18px;
  max-width:56ch;
  font-size:17px;
  line-height:1.8;
  color:var(--muted);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:28px;
}
.hero-points{
  display:flex;
  flex-wrap:wrap;
  gap:10px 18px;
  margin-top:26px;
  font-size:14px;
  color:var(--muted);
}
.hero-points span{display:inline-flex;align-items:center;gap:8px;}
.hero-points span::before{
  content:"";
  width:5px;height:5px;border-radius:50%;
  background:var(--sand);
}

.hero-visual{position:relative;}
.hero-frame{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-soft);
  aspect-ratio:16/10;
  background:var(--paper-2);
}
.hero-frame img{
  width:100%;height:100%;object-fit:cover;border-radius:0;
}
.path-card{
  position:relative;
  margin:-30px 0 0 26px;
  display:flex;
  align-items:center;
  gap:14px;
  padding:16px 20px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow-soft);
  max-width:330px;
}
.path-card .pc-icon{
  width:38px;height:38px;flex-shrink:0;
  border-radius:10px;
  background:var(--paper-2);
  display:grid;place-items:center;
  color:var(--primary);
}
.path-card .pc-icon svg{width:19px;height:19px;}
.path-card strong{
  display:block;
  font-size:14.5px;
  color:var(--ink);
  font-weight:600;
}
.path-card span{font-size:13px;color:var(--muted);line-height:1.6;display:block;}

/* ---------- 板块通用 ---------- */
.section{padding:84px 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{
  font-size:clamp(25px,2.4vw,32px);
  font-weight:650;
  line-height:1.3;
  letter-spacing:.012em;
}
.section-head p{
  margin-top:14px;
  font-size:16px;
  line-height:1.8;
  color:var(--muted);
}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- 渠道卡 ---------- */
.channel-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.channel-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-soft);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.channel-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-hover);
  border-color:#C9D9D6;
}
.channel-media{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2);}
.channel-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .4s ease;}
.channel-card:hover .channel-media img{transform:scale(1.03);}
.channel-body{padding:26px 26px 28px;display:flex;flex-direction:column;gap:12px;flex:1;}
.channel-body h3{font-size:21px;font-weight:600;line-height:1.4;}
.channel-body p{font-size:15.5px;line-height:1.8;color:var(--muted);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 10px;
  font-size:12.5px;
  border-radius:6px;
  border:1px solid var(--line);
  background:var(--paper);
  color:var(--primary-2);
}
.channel-link{
  margin-top:auto;
  padding-top:6px;
  font-size:15px;
  font-weight:600;
  color:var(--primary);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.channel-link svg{width:16px;height:16px;transition:transform .2s ease;}
.channel-link:hover svg{transform:translateX(3px);}

.channel-wide{
  grid-column:1/-1;
  display:flex;
  align-items:center;
  gap:22px;
  padding:26px 28px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-soft);
}
.channel-wide .cw-icon{
  width:52px;height:52px;flex-shrink:0;
  border-radius:12px;
  background:var(--paper-2);
  display:grid;place-items:center;
  color:var(--primary);
}
.channel-wide .cw-icon svg{width:24px;height:24px;}
.channel-wide h3{font-size:19px;font-weight:600;}
.channel-wide p{font-size:15px;color:var(--muted);line-height:1.8;margin-top:6px;}
.channel-wide .cw-action{margin-left:auto;flex-shrink:0;}

/* ---------- 响应时段表 ---------- */
.sla-wrap{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:#fff;
  box-shadow:var(--shadow-soft);
  overflow:hidden;
}
.sla-scroll{overflow-x:auto;}
table.sla{
  width:100%;
  min-width:680px;
  border-collapse:collapse;
  font-size:15px;
}
table.sla thead th{
  background:var(--paper-2);
  color:var(--primary);
  font-weight:600;
  text-align:left;
  padding:16px 20px;
  font-size:14.5px;
  white-space:nowrap;
  border-bottom:1px solid var(--line);
}
table.sla tbody td{
  padding:16px 20px;
  border-top:1px solid var(--line);
  color:var(--muted);
  line-height:1.7;
  vertical-align:top;
}
table.sla tbody td:first-child{color:var(--ink);font-weight:600;}
table.sla tbody tr:hover td{background:#FAFCFB;}
.sla-note{
  display:flex;
  align-items:flex-start;
  gap:10px;
  margin-top:18px;
  font-size:13.5px;
  color:var(--muted);
  line-height:1.75;
}
.sla-note svg{width:17px;height:17px;flex-shrink:0;color:var(--sand);margin-top:3px;}

/* ---------- 流程轨道 ---------- */
.flow{max-width:840px;}
.flow-item{
  position:relative;
  display:grid;
  grid-template-columns:56px 1fr;
  gap:22px;
  padding-bottom:34px;
}
.flow-item:last-child{padding-bottom:0;}
.flow-item::before{
  content:"";
  position:absolute;
  left:27px;
  top:56px;
  bottom:0;
  width:1px;
  background:var(--line);
}
.flow-item:last-child::before{display:none;}
.flow-num{
  width:56px;height:56px;
  border-radius:50%;
  background:#fff;
  border:1px solid var(--line);
  display:grid;place-items:center;
  font-weight:700;
  font-size:16px;
  color:var(--primary);
  font-variant-numeric:tabular-nums;
  box-shadow:0 4px 12px rgba(20,50,55,.05);
}
.flow-body h3{font-size:19px;font-weight:600;line-height:1.4;}
.flow-body p{margin-top:8px;font-size:15.5px;line-height:1.8;color:var(--muted);}
.flow-body .mini-tag{
  display:inline-block;
  margin-top:12px;
  padding:3px 10px;
  font-size:12.5px;
  border-radius:6px;
  background:var(--paper-2);
  color:var(--primary-2);
}

/* ---------- FAQ ---------- */
.faq-layout{
  display:grid;
  grid-template-columns:340px 1fr;
  gap:48px;
  align-items:start;
}
.faq-aside{
  position:sticky;
  top:104px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-soft);
}
.faq-aside h2{
  font-size:23px;
  font-weight:650;
  line-height:1.35;
}
.faq-aside p{
  margin-top:12px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}
.faq-aside .btn{margin-top:22px;}
.faq-aside .aside-line{
  margin:22px 0 0;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:13.5px;
  color:var(--muted);
  line-height:1.75;
}
.acc{border-top:1px solid var(--line);}
.acc-item{border-bottom:1px solid var(--line);transition:background-color .2s ease;}
.acc-item.is-open{background:var(--paper-2);border-radius:10px;border-bottom-color:transparent;}
.acc-trigger{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:20px 8px;
  background:transparent;
  border:0;
  cursor:pointer;
  text-align:left;
  font-size:16.5px;
  font-weight:600;
  color:var(--ink);
  line-height:1.6;
  transition:color .2s ease;
}
.acc-trigger:hover{color:var(--primary);}
.acc-icon{
  width:22px;height:22px;flex-shrink:0;
  position:relative;
  color:var(--primary);
}
.acc-icon::before,
.acc-icon::after{
  content:"";
  position:absolute;
  background:currentColor;
  border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.acc-icon::before{left:0;top:10px;width:22px;height:2px;}
.acc-icon::after{left:10px;top:0;width:2px;height:22px;}
.acc-trigger[aria-expanded="true"] .acc-icon::after{transform:scaleY(0);opacity:0;}
.acc-panel{
  padding:0 8px 22px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--muted);
}
.acc-panel[hidden]{display:none;}

/* ---------- CTA 带 ---------- */
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:38px 40px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-soft);
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:4px;
  background:var(--sand);
}
.cta-band h2{font-size:24px;font-weight:650;line-height:1.35;}
.cta-band p{margin-top:10px;font-size:15.5px;color:var(--muted);line-height:1.8;max-width:60ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex-shrink:0;}

/* ---------- 联系表单 ---------- */
.support-form-section{padding:84px 0 96px;}
.form-layout{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:44px;
  align-items:start;
}
.form-intro h2{font-size:clamp(25px,2.4vw,32px);font-weight:650;line-height:1.3;}
.form-intro p{margin-top:14px;font-size:16px;line-height:1.8;color:var(--muted);}
.check-list{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.check-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:15px;
  line-height:1.75;
  color:var(--ink);
}
.check-list svg{
  width:18px;height:18px;flex-shrink:0;margin-top:4px;color:var(--ok);
}
.form-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px;
  box-shadow:var(--shadow-soft);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{margin-bottom:18px;}
.field label{
  display:block;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  margin-bottom:8px;
}
.field label .req{color:var(--danger);margin-left:2px;}
.field input,
.field select,
.field textarea{
  width:100%;
  height:46px;
  padding:0 14px;
  font-family:inherit;
  font-size:15px;
  color:var(--ink);
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-btn);
  transition:border-color .2s ease,box-shadow .2s ease;
  appearance:none;
}
.field select{
  background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235D6D70' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 12px center;
  background-size:16px;
  padding-right:38px;
}
.field textarea{
  height:auto;
  min-height:124px;
  padding:12px 14px;
  line-height:1.7;
  resize:vertical;
}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(31,78,90,.12);
}
.field .hint{font-size:13px;color:var(--muted);margin-top:6px;line-height:1.7;}
.form-note{
  font-size:13px;
  line-height:1.75;
  color:var(--muted);
  margin-top:14px;
}
.form-note a{text-decoration:underline;text-underline-offset:3px;}
.form-tip{
  display:none;
  margin-top:16px;
  padding:12px 16px;
  border-radius:10px;
  background:#EAF4EF;
  border:1px solid #BFDDCE;
  color:var(--ok);
  font-size:14px;
  line-height:1.7;
}
.form-tip.show{display:block;}
.back-row{
  margin-top:26px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--footer);
  color:rgba(245,247,246,.78);
  padding:64px 0 0;
  border-top:1px solid rgba(201,164,106,.55);
}
.site-footer .row{--bs-gutter-x:2rem;}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  color:#fff;
  letter-spacing:.01em;
}
.footer-brand .fb-mark{
  width:32px;height:32px;
  border-radius:9px;
  background:rgba(255,255,255,.12);
  display:grid;place-items:center;
  color:#fff;
  flex-shrink:0;
}
.footer-brand .fb-mark svg{width:18px;height:18px;}
.footer-brand em{font-style:normal;font-weight:400;color:#9FC0C5;margin-left:2px;}
.footer-desc{
  margin-top:16px;
  font-size:14px;
  line-height:1.85;
  color:rgba(245,247,246,.66);
  max-width:34ch;
}
.footer-title{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-links li{margin-bottom:10px;}
.footer-links a{
  font-size:14px;
  color:rgba(245,247,246,.72);
  transition:color .2s ease;
}
.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  line-height:1.75;
  color:rgba(245,247,246,.72);
  margin-bottom:12px;
}
.footer-contact svg{
  width:18px;height:18px;
  flex-shrink:0;
  margin-top:3px;
  color:var(--sand);
}
.footer-bottom{
  margin-top:48px;
  padding:20px 0;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  font-size:13px;
  color:rgba(245,247,246,.56);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .nav-list{gap:16px;}
  .nav-list a{font-size:14.5px;}
  .nav-menu{gap:16px;}
  .hero-grid{gap:36px;}
  .faq-layout{grid-template-columns:300px 1fr;gap:32px;}
}

@media (max-width:991px){
  .nav-toggle{display:block;}
  .nav-menu{
    position:absolute;
    left:0;right:0;
    top:100%;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:#fff;
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    box-shadow:0 16px 30px rgba(20,50,55,.10);
    padding:10px 24px 22px;
  }
  .nav-menu.open{display:flex;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;}
  .nav-list a{
    display:block;
    padding:13px 12px;
    font-size:15.5px;
    border-left:3px solid transparent;
  }
  .nav-list a::after{display:none;}
  .nav-list a.active{
    background:var(--paper-2);
    border-left-color:var(--primary);
  }
  .nav-cta{margin-top:16px;width:100%;height:46px;}

  .page-hero{padding:28px 0 56px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual{order:2;}
  .path-card{margin:-30px 16px 0 16px;max-width:none;}
  .channel-grid{grid-template-columns:1fr;}
  .channel-wide{flex-wrap:wrap;}
  .channel-wide .cw-action{margin-left:0;width:100%;}
  .channel-wide .cw-action .btn{width:100%;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .faq-aside{position:static;}
  .form-layout{grid-template-columns:1fr;gap:32px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 26px;}
  .cta-actions{width:100%;}
  .section{padding:62px 0;}
  .support-form-section{padding:62px 0 72px;}
}

@media (max-width:767px){
  body{font-size:16px;}
  .container{padding-left:20px;padding-right:20px;}
  .nav-wrap{min-height:64px;}
  .brand-text{font-size:16.5px;}
  .page-hero h1{font-size:clamp(27px,6.4vw,34px);}
  .hero-lead{font-size:16px;}
  .section-head h2{font-size:24px;}
  .form-row{grid-template-columns:1fr;gap:0;}
  .form-card{padding:22px;}
  .channel-body{padding:22px;}
  .flow-item{grid-template-columns:48px 1fr;gap:16px;}
  .flow-num{width:48px;height:48px;font-size:15px;}
  .flow-item::before{left:23px;top:48px;}
  .footer-bottom{margin-top:36px;}
}

@media (max-width:519px){
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-points{gap:8px 14px;font-size:13.5px;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .cta-actions .btn{width:100%;}
  .back-row .btn{width:100%;}
  .acc-trigger{font-size:15.5px;padding:18px 6px;}
  .faq-aside{padding:22px;}
}