/* roulang page: index */
:root{
  --ink:#0D1F23;
  --ink-2:#566B6E;
  --ink-3:#8A9C9E;
  --bg:#F4F7F7;
  --card:#FFFFFF;
  --line:#D9E5E5;
  --line-2:#EDF2F2;
  --teal:#0B4F58;
  --teal-deep:#06363D;
  --teal-bright:#178E99;
  --dark:#071A1E;
  --dark-2:#0C2A2E;
  --orange:#FF5A22;
  --orange-dark:#E0430E;
  --ok:#1F8A5B;
  --warn:#C9861A;
  --err:#C63A34;
  --on-dark:#EAF4F4;
  --r-sm:12px;
  --r:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(7,26,30,.06);
  --sh-md:0 10px 30px -12px rgba(7,26,30,.18);
  --sh-lg:0 30px 60px -30px rgba(7,26,30,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--teal);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:var(--teal-bright);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
:focus-visible{outline:3px solid rgba(23,142,153,.35);outline-offset:2px;border-radius:6px;}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
  white-space:nowrap;
}
.btn svg{width:16px;height:16px;transition:transform .25s var(--ease);}
.btn:hover svg{transform:translateX(4px);}
.btn-primary{background:var(--orange);color:#fff;box-shadow:var(--sh-sm);}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-md);}
.btn-primary:active{transform:translateY(0);}
.btn-solid{background:var(--teal);color:#fff;}
.btn-solid:hover{background:var(--teal-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-md);}
.btn-ghost{background:transparent;color:var(--teal);border:1.5px solid var(--teal);}
.btn-ghost:hover{background:rgba(11,79,88,.06);color:var(--teal-deep);transform:translateY(-2px);}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--teal);font-weight:600;font-size:15px;border-bottom:1px solid transparent;padding-bottom:2px;}
.btn-link:hover{border-bottom-color:var(--teal-bright);color:var(--teal-bright);}
.btn-link svg{width:14px;height:14px;transition:transform .25s var(--ease);}
.btn-link:hover svg{transform:translateX(4px);}
.btn[disabled],.btn.is-disabled{opacity:.6;pointer-events:none;}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:13px;letter-spacing:.02em;
  background:rgba(23,142,153,.1);color:var(--teal);
  border:1px solid rgba(23,142,153,.18);
}
.badge-orange{background:rgba(255,90,34,.1);color:var(--orange-dark);border-color:rgba(255,90,34,.2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.12em;color:var(--teal-bright);
  text-transform:uppercase;font-weight:600;margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--orange);display:inline-block;}

/* ---------- 浮动 Dock 导航 ---------- */
.site-header{position:relative;z-index:120;}
.nav-dock{
  position:fixed;top:18px;left:50%;transform:translateX(-50%);
  width:min(1120px,92vw);height:64px;
  display:flex;align-items:center;gap:20px;
  padding:0 18px 0 22px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-md);
  transition:height .3s var(--ease),background .3s var(--ease),box-shadow .3s var(--ease);
}
.nav-dock.is-scrolled{height:56px;background:rgba(255,255,255,.95);box-shadow:var(--sh-lg);}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--teal-deep);letter-spacing:-.01em;}
.brand:hover{color:var(--teal-bright);}
.brand-mark{
  width:30px;height:30px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--teal-bright),var(--teal-deep));
  display:inline-flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:16px;height:16px;fill:none;stroke:#EAF4F4;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--ink-2);border-radius:var(--r-pill);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a:hover{color:var(--teal);background:rgba(11,79,88,.05);}
.nav-links a.active{color:var(--teal-deep);font-weight:600;background:rgba(23,142,153,.1);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:#fff;color:var(--ink-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:var(--teal);border-color:var(--teal-bright);background:rgba(23,142,153,.06);}
.icon-btn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.menu-btn{display:none;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;}
.menu-btn svg{width:18px;height:18px;fill:none;stroke:var(--teal-deep);stroke-width:2;stroke-linecap:round;}

.drawer-mask{
  position:fixed;inset:0;background:rgba(7,26,30,.42);z-index:190;
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;left:0;right:0;bottom:0;z-index:200;
  background:#fff;border-radius:24px 24px 0 0;box-shadow:var(--sh-lg);
  padding:24px 22px 34px;
  transform:translateY(105%);transition:transform .35s var(--ease);
}
.mobile-drawer.is-open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-head strong{font-size:16px;color:var(--teal-deep);}
.drawer-close{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;}
.drawer-close svg{width:16px;height:16px;fill:none;stroke:var(--teal-deep);stroke-width:2;stroke-linecap:round;}
.drawer-nav li+li{border-top:1px solid var(--line-2);}
.drawer-nav a{
  display:flex;align-items:center;gap:14px;padding:16px 4px;font-size:18px;font-weight:600;color:var(--ink);
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--teal-bright);}
.drawer-nav .idx{
  font-family:"Barlow Condensed","Arial Narrow",sans-serif;
  font-size:14px;letter-spacing:.08em;color:var(--ink-3);min-width:22px;
}
.drawer-cta{margin-top:22px;}
.drawer-cta .btn{width:100%;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:158px 0 100px;
  background:#F4F7F7 url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(244,247,247,.95) 0%,rgba(244,247,247,.9) 55%,#F4F7F7 100%);
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;
  border:1px solid rgba(23,142,153,.18);border-radius:50%;
  animation:iceTrace 900ms var(--ease) both;
}
@keyframes iceTrace{from{opacity:0;transform:scale(.9);}to{opacity:1;transform:scale(1);}}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.hero h1{
  font-size:clamp(34px,5vw,62px);line-height:1.08;letter-spacing:-.02em;font-weight:800;
  color:var(--teal-deep);margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--orange);}
.hero-sub{font-size:17px;line-height:1.8;color:var(--ink-2);max-width:520px;margin-bottom:30px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.trust{display:flex;flex-wrap:wrap;gap:10px;}
.trust li{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-sm);
  font-size:13px;color:var(--ink-2);
}
.trust svg{width:14px;height:14px;fill:none;stroke:var(--teal-bright);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:var(--sh-lg);border:1px solid rgba(255,255,255,.7);
}
.hero-float{
  position:absolute;left:-18px;bottom:-22px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--sh-lg);padding:16px 20px;min-width:190px;
}
.hero-float .num{
  font-family:"Barlow Condensed","Arial Narrow",sans-serif;
  font-size:34px;line-height:1;color:var(--teal);font-weight:700;letter-spacing:.01em;
}
.hero-float .lbl{font-size:13px;color:var(--ink-3);letter-spacing:.04em;margin-top:4px;}

/* ---------- 通用板块 ---------- */
.section{padding:104px 0;}
.section-alt{background:#fff;}
.sec-head{max-width:720px;margin-bottom:52px;}
.sec-head h2{
  font-size:clamp(26px,3.2vw,40px);line-height:1.2;font-weight:700;
  color:var(--teal-deep);letter-spacing:-.015em;margin-bottom:14px;
}
.sec-head p{color:var(--ink-2);font-size:16px;}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px;}
.sec-head-row .sec-head{margin-bottom:0;}

/* ---------- 服务区（非对称） ---------- */
.svc-grid{display:grid;grid-template-columns:1.55fr 1fr;grid-template-rows:auto auto;gap:24px;}
.svc-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--sh-md);overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.svc-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);}
.svc-main{grid-row:1 / span 2;display:flex;flex-direction:column;}
.svc-main .svc-media{overflow:hidden;aspect-ratio:16/10;}
.svc-main .svc-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.svc-main:hover .svc-media img{transform:scale(1.03);}
.svc-body{padding:26px 28px 30px;}
.svc-num{
  font-family:"Barlow Condensed","Arial Narrow",sans-serif;
  font-size:40px;line-height:1;letter-spacing:.04em;color:rgba(11,79,88,.16);font-weight:700;
  display:block;margin-bottom:10px;
}
.svc-card h3{font-size:21px;line-height:1.4;font-weight:600;color:var(--teal-deep);margin-bottom:10px;}
.svc-card p{color:var(--ink-2);font-size:15px;margin-bottom:16px;}
.svc-small .svc-body{padding:24px 26px 26px;}
.svc-small .svc-num{font-size:32px;}

/* ---------- 数据带 ---------- */
.stats{
  background:var(--dark);color:var(--on-dark);position:relative;overflow:hidden;
  padding:76px 0;
}
.stats::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  opacity:.1;
}
.stats .container{position:relative;z-index:2;}
.stats-head{max-width:640px;margin-bottom:44px;}
.stats-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.25;font-weight:700;color:#fff;margin-bottom:12px;}
.stats-head p{color:#A9C3C6;font-size:15px;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:6px 26px;border-left:1px solid #1E3A3F;}
.stat:first-child{border-left:none;padding-left:0;}
.stat .num{
  font-family:"Barlow Condensed","Arial Narrow",sans-serif;
  font-size:clamp(44px,5vw,68px);line-height:1;font-weight:700;color:#fff;letter-spacing:.01em;
}
.stat .num span{font-size:.5em;color:var(--teal-bright);margin-left:4px;letter-spacing:.06em;}
.stat .lbl{margin-top:12px;font-size:13px;letter-spacing:.16em;color:#8FB0B3;}

/* ---------- 案例（不等高） ---------- */
.case-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;}
.case-col{display:grid;gap:24px;}
.case-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;box-shadow:var(--sh-md);display:flex;flex-direction:column;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);}
.case-media{overflow:hidden;}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.case-card:hover .case-media img{transform:scale(1.03);}
.case-main .case-media{aspect-ratio:16/9;}
.case-small .case-media{aspect-ratio:16/7;}
.case-body{padding:24px 26px 26px;}
.case-body h3{font-size:19px;line-height:1.45;font-weight:600;color:var(--teal-deep);margin:12px 0 10px;}
.case-body h3 a{color:inherit;background-image:linear-gradient(var(--teal-bright),var(--teal-bright));background-size:0 1px;background-position:0 100%;background-repeat:no-repeat;transition:background-size .35s var(--ease);}
.case-card:hover .case-body h3 a{background-size:100% 1px;}
.case-result{
  display:flex;align-items:center;gap:8px;font-size:14px;color:var(--teal);
  padding-top:14px;border-top:1px dashed var(--line);margin-top:14px;
}
.case-result strong{font-family:"Barlow Condensed","Arial Narrow",sans-serif;font-size:18px;letter-spacing:.02em;color:var(--orange-dark);}

/* ---------- 方案阶梯 ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.plan{
  position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:34px 30px 30px;display:flex;flex-direction:column;
  box-shadow:var(--sh-sm);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);}
.plan-featured{border:1.5px solid var(--teal);box-shadow:var(--sh-md);}
.plan-featured::before{
  content:"";position:absolute;left:30px;right:30px;top:0;height:4px;border-radius:0 0 4px 4px;background:var(--teal);
}
.plan-tag{
  position:absolute;top:-13px;left:30px;
  padding:5px 14px;border-radius:var(--r-pill);background:var(--teal);color:#fff;
  font-size:12px;letter-spacing:.06em;font-weight:600;
}
.plan h3{font-size:22px;font-weight:700;color:var(--teal-deep);margin-bottom:8px;}
.plan .for{font-size:14px;color:var(--ink-3);margin-bottom:22px;}
.plan ul{margin-bottom:26px;}
.plan li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-2);padding:7px 0;}
.plan li svg{width:16px;height:16px;flex:0 0 auto;margin-top:5px;fill:none;stroke:var(--teal-bright);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;}
.plan .plan-cta{margin-top:auto;}

/* ---------- 最新信息（CMS 区域） ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--sh-sm);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:rgba(23,142,153,.4);}
.news-feature{grid-column:1 / -1;flex-direction:row;}
.news-feature .news-media{flex:0 0 46%;overflow:hidden;}
.news-feature .news-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/9;transition:transform .5s var(--ease);}
.news-feature:hover .news-media img{transform:scale(1.03);}
.news-feature .news-body{padding:34px 36px;display:flex;flex-direction:column;justify-content:center;}
.news-feature h3{font-size:24px;}
.news-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s var(--ease);}
.news-card:hover .news-media img{transform:scale(1.03);}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px;}
.news-body h3{
  font-size:18px;line-height:1.5;font-weight:600;color:var(--teal-deep);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-body h3 a{color:inherit;}
.news-card:hover .news-body h3 a{color:var(--teal-bright);}
.news-body p{
  font-size:14px;color:var(--ink-2);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-3);}
.news-time{font-family:"Barlow Condensed","Arial Narrow",sans-serif;letter-spacing:.05em;font-size:13px;}
.news-empty{
  grid-column:1 / -1;
  border:1.5px dashed var(--line);border-radius:var(--r-lg);
  padding:56px 30px;text-align:center;background:rgba(255,255,255,.6);
}
.news-empty img{width:180px;margin:0 auto 18px;border-radius:var(--r);opacity:.85;}
.news-empty p{color:var(--ink-2);font-size:15px;margin-bottom:14px;}
.news-skeleton{grid-column:1 / -1;display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.sk{border-radius:var(--r);background:linear-gradient(90deg,rgba(23,142,153,.08),rgba(23,142,153,.16),rgba(23,142,153,.08));height:180px;}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
.faq-side{position:sticky;top:110px;}
.faq-side h2{font-size:clamp(26px,3vw,36px);line-height:1.2;color:var(--teal-deep);margin-bottom:14px;font-weight:700;}
.faq-side p{color:var(--ink-2);font-size:15px;margin-bottom:24px;}
.faq-list{display:grid;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.faq-item[open]{border-color:var(--teal-bright);box-shadow:var(--sh-sm);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:58px;padding:16px 22px;
  font-size:16px;font-weight:600;color:var(--teal-deep);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:24px;text-align:center;
  font-size:20px;font-weight:400;color:var(--teal-bright);line-height:1;
  transition:transform .26s var(--ease);
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);}
.faq-item .faq-body{padding:0 22px 20px;color:var(--ink-2);font-size:15px;line-height:1.85;}

/* ---------- 联系 / 表单 ---------- */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start;}
.contact-info{display:grid;gap:14px;}
.info-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;
  display:flex;gap:14px;align-items:flex-start;
}
.info-item .ico{
  width:38px;height:38px;border-radius:12px;flex:0 0 auto;
  background:rgba(23,142,153,.1);display:flex;align-items:center;justify-content:center;
}
.info-item .ico svg{width:18px;height:18px;fill:none;stroke:var(--teal);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.info-item strong{display:block;font-size:15px;color:var(--teal-deep);margin-bottom:3px;}
.info-item span{font-size:14px;color:var(--ink-2);}
.contact-visual{
  position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  min-height:190px;background:#0B4F58 url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.contact-visual .ov{
  position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,26,30,.55),rgba(7,26,30,.8));
  display:flex;flex-direction:column;justify-content:flex-end;padding:22px 24px;color:#EAF4F4;
}
.contact-visual .ov strong{font-size:16px;margin-bottom:4px;}
.contact-visual .ov span{font-size:13px;color:#B6CFD1;}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-lg);padding:34px 32px;
}
.form-card h3{font-size:22px;font-weight:700;color:var(--teal-deep);margin-bottom:8px;}
.form-card .form-note{font-size:14px;color:var(--ink-3);margin-bottom:24px;}
.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(--teal-deep);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-sm);background:#FBFDFD;
  font-size:15px;color:var(--ink);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{height:130px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--teal);background:#fff;box-shadow:0 0 0 3px rgba(23,142,153,.16);
}
.field .hint{font-size:13px;color:var(--ink-3);margin-top:6px;}
.field .error{font-size:13px;color:var(--err);margin-top:6px;display:none;}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--err);}
.field.has-error .error{display:block;}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:6px;}
.form-foot span{font-size:13px;color:var(--ink-3);}
.form-msg{
  margin-top:16px;padding:12px 16px;border-radius:var(--r-sm);font-size:14px;display:none;
  background:rgba(31,138,91,.1);color:var(--ok);border:1px solid rgba(31,138,91,.24);
}
.form-msg.is-show{display:block;}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--teal-deep),var(--teal));
  border-radius:var(--r-lg);padding:52px 48px;color:#EAF4F4;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:260px;height:260px;
  border:1px solid rgba(255,255,255,.16);border-radius:50%;
}
.cta-band h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;color:#fff;margin-bottom:8px;}
.cta-band p{font-size:15px;color:#BFD8DA;max-width:560px;}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2;}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.6);color:#EAF4F4;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--dark);color:#C7D9DA;position:relative;overflow:hidden;
  padding:76px 0 30px;margin-top:96px;
}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;opacity:.07;
}
.site-footer .container{position:relative;z-index:2;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:#fff;margin-bottom:16px;}
.footer-brand .brand-mark{background:linear-gradient(140deg,var(--teal-bright),#0B4F58);}
.footer-about{font-size:14px;line-height:1.85;color:#9FBBBE;max-width:320px;}
.footer-col strong{display:block;font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col li+li{margin-top:10px;}
.footer-col a{font-size:14px;color:#C7D9DA;}
.footer-col a:hover{color:var(--teal-bright);}
.footer-contact li{font-size:14px;color:#9FBBBE;display:flex;gap:8px;align-items:flex-start;}
.footer-contact svg{width:15px;height:15px;flex:0 0 auto;margin-top:5px;fill:none;stroke:#5F8B8F;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding-top:22px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:#7FA0A3;
}
.footer-bottom a{color:#9FBBBE;font-size:13px;}
.footer-bottom a:hover{color:var(--teal-bright);}

.back-top{
  position:fixed;right:24px;bottom:28px;z-index:150;
  width:46px;height:46px;border-radius:50%;
  background:var(--teal);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-md);opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s var(--ease),transform .3s var(--ease),background .3s var(--ease);
}
.back-top.is-show{opacity:1;visibility:visible;}
.back-top:hover{background:var(--teal-deep);transform:translateY(-3px);}
.back-top svg{width:18px;height:18px;fill:none;stroke:#fff;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 20px;}
  .nav-links,.nav-actions .icon-btn,.nav-actions .btn{display:none;}
  .menu-btn{display:flex;}
  .nav-dock{height:60px;padding:0 14px 0 18px;}
  .hero{padding:132px 0 80px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero::after{display:none;}
  .hero-float{left:14px;bottom:-18px;}
  .section{padding:80px 0;}
  .svc-grid{grid-template-columns:1fr;grid-template-rows:none;}
  .svc-main{grid-row:auto;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px 0;}
  .stat{border-left:none;padding:0;}
  .stat:nth-child(even){border-left:1px solid #1E3A3F;padding-left:24px;}
  .case-grid{grid-template-columns:1fr;}
  .plan-grid{grid-template-columns:1fr;}
  .plan-featured{order:-1;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .news-feature{flex-direction:column;}
  .news-feature .news-media{flex:none;}
  .news-feature .news-body{padding:24px 24px 26px;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .faq-side{position:static;}
  .contact-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .hero{padding:118px 0 64px;}
  .hero h1{font-size:clamp(30px,8.2vw,42px);}
  .hero-cta .btn{flex:1 1 auto;}
  .trust li{font-size:12px;padding:7px 12px;}
  .section{padding:64px 0;}
  .sec-head{margin-bottom:36px;}
  .sec-head-row{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:34px;}
  .svc-body{padding:22px 20px 24px;}
  .stats{padding:58px 0;}
  .stats-grid{grid-template-columns:1fr 1fr;}
  .stat .num{font-size:42px;}
  .stat:nth-child(even){padding-left:18px;}
  .news-grid{grid-template-columns:1fr;}
  .faq-item summary{font-size:15px;padding:14px 18px;}
  .faq-item .faq-body{padding:0 18px 18px;}
  .form-card{padding:26px 20px;}
  .form-row{grid-template-columns:1fr;gap:0;}
  .form-foot .btn{width:100%;}
  .cta-band{padding:36px 24px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{flex:1 1 auto;}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:34px;}
  .site-footer{padding:58px 0 26px;margin-top:64px;}
  .back-top{right:16px;bottom:18px;width:42px;height:42px;}
}
@media (max-width:479px){
  body{font-size:15px;}
  .hero{padding:110px 0 56px;}
  .brand{font-size:15px;}
  .section{padding:56px 0;}
  .hero-float{padding:12px 16px;min-width:158px;}
  .hero-float .num{font-size:28px;}
  .stats-grid{grid-template-columns:1fr;gap:26px;}
  .stat:nth-child(even){border-left:none;padding-left:0;}
  .news-feature .news-body{padding:20px 18px 22px;}
  .news-body{padding:20px 18px 22px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --teal:#0B4F58;
  --teal-dark:#06363D;
  --teal-deep:#071A1E;
  --teal-light:#178E99;
  --teal-wash:#EAF4F4;
  --orange:#FF5A22;
  --orange-dark:#E0430E;
  --orange-wash:#FDF3EE;
  --bg:#F4F7F7;
  --card:#FFFFFF;
  --line:#D9E5E5;
  --line-soft:#EDF2F2;
  --ink:#0D1F23;
  --ink-2:#566B6E;
  --ink-3:#8A9C9E;
  --on-dark:#EAF4F4;
  --success:#1F8A5B;
  --warn:#C9861A;
  --danger:#C63A34;
  --r-sm:12px;
  --r:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(7,26,30,.06);
  --sh-md:0 10px 30px -12px rgba(7,26,30,.18);
  --sh-lg:0 30px 60px -30px rgba(7,26,30,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","思源黑体",system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--teal);text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--orange)}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:3px solid rgba(23,142,153,.35);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 顶部 Dock 导航 ---------- */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:120;pointer-events:none}
.nav-dock{
  pointer-events:auto;
  width:min(1120px,92vw);
  margin:0 auto;
  height:64px;
  display:flex;
  align-items:center;
  gap:14px;
  padding:0 10px 0 18px;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-md);
  transition:height .3s var(--ease),background .3s var(--ease),box-shadow .3s var(--ease);
}
.nav-dock.is-scrolled{height:56px;background:rgba(255,255,255,.95);box-shadow:var(--sh-lg)}
.brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:var(--teal);letter-spacing:.01em;white-space:nowrap}
.brand:hover{color:var(--teal-dark)}
.brand-mark{width:32px;height:32px;border-radius:10px;background:var(--teal);display:grid;place-items:center;flex:0 0 auto}
.brand-mark svg{width:19px;height:19px;fill:none;stroke:#fff;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  display:block;
  padding:9px 15px;
  border-radius:var(--r-pill);
  font-size:15px;
  color:var(--ink-2);
  transition:background .25s var(--ease),color .25s var(--ease);
}
.nav-links a:hover{background:var(--teal-wash);color:var(--teal)}
.nav-links a.active{background:var(--teal-wash);color:var(--teal);font-weight:700}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:transparent;
  display:grid;place-items:center;cursor:pointer;
  transition:background .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:var(--teal);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.icon-btn:hover{background:var(--teal-wash);border-color:var(--teal-light)}
.icon-btn:active{transform:scale(.94)}
.menu-btn{
  display:none;width:38px;height:38px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:transparent;cursor:pointer;
  place-items:center;
}
.menu-btn svg{width:20px;height:20px;fill:none;stroke:var(--teal);stroke-width:1.8;stroke-linecap:round}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1.5px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-primary{background:var(--teal);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--teal-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-md)}
.btn-primary:active{transform:translateY(0)}
.btn-accent{background:var(--orange);color:#fff}
.btn-accent:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-md)}
.btn-ghost{background:transparent;border-color:var(--teal-light);color:var(--teal)}
.btn-ghost:hover{background:var(--teal-wash);color:var(--teal-dark)}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--teal)}
.link-arrow span{transition:transform .25s var(--ease)}
.link-arrow:hover span{transform:translateX(4px)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:13px;letter-spacing:.02em;font-weight:600;
  background:var(--teal-wash);color:var(--teal);
}
.badge-orange{background:var(--orange-wash);color:var(--orange-dark)}

/* ---------- 移动抽屉 ---------- */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(7,26,30,.5);
  opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s var(--ease);z-index:130;
}
.drawer-overlay.open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;left:0;right:0;bottom:0;z-index:140;
  background:#fff;border-radius:var(--r-lg) var(--r-lg) 0 0;
  padding:22px 22px 34px;
  transform:translateY(102%);
  transition:transform .38s var(--ease);
  box-shadow:var(--sh-lg);
}
.mobile-drawer.open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-title{font-weight:800;color:var(--teal)}
.drawer-close{width:36px;height:36px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;cursor:pointer}
.drawer-close svg{width:18px;height:18px;fill:none;stroke:var(--teal);stroke-width:1.8;stroke-linecap:round}
.drawer-links li + li{border-top:1px solid var(--line-soft)}
.drawer-links a{display:flex;align-items:center;gap:14px;padding:16px 4px;font-size:18px;font-weight:600;color:var(--ink)}
.drawer-links a span{font-family:"Barlow Condensed",sans-serif;font-size:14px;letter-spacing:.08em;color:var(--ink-3)}
.drawer-links a:hover{color:var(--teal)}
.drawer-cta{margin-top:20px;width:100%}

/* ---------- 页面主体 ---------- */
main{padding-top:112px}
.page-band{
  position:relative;
  padding:52px 0 60px;
  background-image:linear-gradient(180deg,rgba(244,247,247,.94),rgba(244,247,247,.99)),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-3);margin-bottom:22px}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--teal)}
.crumbs .sep{color:var(--ink-3);opacity:.7}
.crumbs .current{color:var(--ink);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:860px}
.article-head .badge{margin-bottom:18px}
.article-head h1{
  font-size:clamp(30px,4.2vw,50px);
  line-height:1.16;
  letter-spacing:-.02em;
  font-weight:800;
  color:var(--ink);
  margin-bottom:20px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:14px;color:var(--ink-2)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--line);display:inline-block}
.meta-item{display:inline-flex;align-items:center;gap:7px}
.meta-item svg{width:15px;height:15px;fill:none;stroke:var(--teal-light);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

.section{padding:80px 0}
.section-tight{padding:60px 0}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 326px;gap:52px;align-items:start}
.article-body{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);
  padding:46px 52px;
  max-width:800px;
}
.rich-text{font-size:17px;line-height:1.9;color:var(--ink);overflow-wrap:break-word}
.rich-text > *:first-child{margin-top:0}
.rich-text p{margin:0 0 1.35em}
.rich-text h2{
  position:relative;
  font-size:clamp(22px,2.4vw,28px);
  line-height:1.35;font-weight:700;
  margin:46px 0 18px;padding-left:16px;
}
.rich-text h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--teal-light);
}
.rich-text h3{font-size:20px;line-height:1.45;font-weight:600;margin:32px 0 12px;color:var(--teal-dark)}
.rich-text ul,.rich-text ol{margin:0 0 1.4em;padding-left:2px}
.rich-text ul li{position:relative;padding-left:22px;margin-bottom:10px}
.rich-text ul li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--teal-light)}
.rich-text ol{counter-reset:n}
.rich-text ol li{position:relative;padding-left:34px;margin-bottom:10px;counter-increment:n}
.rich-text ol li::before{
  content:counter(n,decimal-leading-zero);
  position:absolute;left:0;top:.18em;
  font-family:"Barlow Condensed",sans-serif;font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--orange);
}
.rich-text blockquote{
  margin:26px 0;padding:18px 24px;
  border-left:3px solid var(--orange);
  background:var(--orange-wash);
  border-radius:var(--r-sm);
  color:var(--ink-2);font-size:16px;
}
.rich-text blockquote p:last-child{margin-bottom:0}
.rich-text img{border-radius:var(--r);margin:24px 0;width:100%;height:auto}
.rich-text figure{margin:26px 0}
.rich-text figcaption{font-size:13.5px;color:var(--ink-3);text-align:center;margin-top:10px}
.rich-text table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden}
.rich-text th,.rich-text td{padding:12px 15px;text-align:left;border-bottom:1px solid var(--line-soft)}
.rich-text thead th{background:var(--teal-wash);color:var(--teal-dark);font-weight:700}
.rich-text tr:last-child td{border-bottom:none}
.rich-text a{color:var(--teal);text-decoration:underline;text-decoration-color:rgba(23,142,153,.4);text-underline-offset:3px}
.rich-text a:hover{color:var(--orange);text-decoration-color:currentColor}
.rich-text hr{border:none;border-top:1px solid var(--line-soft);margin:36px 0}

/* 侧栏 */
.side{position:sticky;top:104px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh-sm);padding:22px}
.side-title{font-size:16px;font-weight:700;color:var(--teal-dark);margin-bottom:16px;display:flex;align-items:center;gap:8px}
.side-title::before{content:"";width:14px;height:2px;border-radius:2px;background:var(--orange)}
.rec-list{display:flex;flex-direction:column;gap:16px}
.rec-item{display:grid;grid-template-columns:84px minmax(0,1fr);gap:12px;align-items:center;padding:6px;border-radius:var(--r-sm);transition:background .25s var(--ease),transform .25s var(--ease)}
.rec-item:hover{background:var(--teal-wash);transform:translateY(-2px)}
.rec-item img{width:84px;height:62px;object-fit:cover;border-radius:10px}
.rec-item h3{font-size:15px;line-height:1.5;font-weight:600;color:var(--ink);margin-bottom:5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rec-item:hover h3{color:var(--teal)}
.rec-item time{font-size:12.5px;color:var(--ink-3);font-family:"Barlow Condensed",sans-serif;letter-spacing:.04em}
.side-note{font-size:14px;color:var(--ink-2);line-height:1.75}
.side-note strong{color:var(--teal-dark);display:block;margin-bottom:6px;font-size:15px}

/* 文末操作区 */
.article-foot{max-width:800px;margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:14px;justify-content:space-between}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-block;padding:6px 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--ink-2);
  transition:border-color .25s var(--ease),color .25s var(--ease),background .25s var(--ease);
}
.tag:hover{border-color:var(--teal-light);color:var(--teal);background:var(--teal-wash)}
.copy-btn{
  display:inline-flex;align-items:center;gap:8px;
  height:42px;padding:0 20px;border-radius:var(--r-pill);
  border:1.5px solid var(--teal-light);background:#fff;color:var(--teal);
  font-size:14px;font-weight:600;cursor:pointer;
  transition:background .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}
.copy-btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.copy-btn:hover{background:var(--teal-wash);transform:translateY(-2px)}
.copy-btn:active{transform:translateY(0)}

/* 上下篇 */
.pager{max-width:800px;margin-top:26px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.pager a{
  display:block;padding:20px 22px;border-radius:var(--r);
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-sm);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.pager a:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:var(--teal-light)}
.pager .pager-label{font-size:13px;color:var(--ink-3);margin-bottom:8px;letter-spacing:.02em}
.pager .pager-title{font-size:16px;font-weight:600;color:var(--ink);line-height:1.5}
.pager a:hover .pager-title{color:var(--teal)}
.pager .next{text-align:right}

/* 空态 */
.empty-state{
  max-width:800px;padding:64px 32px;text-align:center;
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-lg);
}
.empty-state img{width:120px;height:auto;margin:0 auto 20px;opacity:.85}
.empty-state h2{font-size:22px;font-weight:700;color:var(--teal-dark);margin-bottom:12px}
.empty-state p{font-size:15.5px;color:var(--ink-2);margin-bottom:24px}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:48px;align-items:start}
.faq-intro{position:sticky;top:104px}
.faq-intro h2{font-size:clamp(24px,3vw,34px);line-height:1.24;font-weight:700;letter-spacing:-.01em;margin-bottom:14px}
.faq-intro p{font-size:16px;color:var(--ink-2)}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .25s var(--ease),box-shadow .25s var(--ease)}
.faq-item.open{border-color:var(--teal-light);box-shadow:var(--sh-sm)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:60px;padding:16px 22px;background:transparent;border:none;
  text-align:left;font-size:16.5px;font-weight:600;color:var(--ink);cursor:pointer;
}
.faq-q:hover{color:var(--teal)}
.faq-q .sign{position:relative;flex:0 0 auto;width:18px;height:18px}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;background:var(--teal-light);border-radius:2px;transition:transform .26s var(--ease),opacity .26s var(--ease)}
.faq-q .sign::before{left:0;top:8px;width:18px;height:2px}
.faq-q .sign::after{top:0;left:8px;width:2px;height:18px}
.faq-item.open .sign::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a p{padding:0 22px 20px;font-size:15.5px;color:var(--ink-2);line-height:1.8}

/* CTA */
.cta-band{
  background:var(--teal-deep);
  border-radius:var(--r-lg);
  padding:56px 56px;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:center;
  position:relative;overflow:hidden;
  background-image:linear-gradient(120deg,rgba(7,26,30,.94),rgba(7,26,30,.86)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,36px);line-height:1.25;font-weight:700;margin-bottom:14px}
.cta-band p{color:#B9CFD1;font-size:16px;max-width:60ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.btn-outline-light{background:transparent;border-color:rgba(234,244,244,.45);color:#EAF4F4}
.btn-outline-light:hover{background:rgba(234,244,244,.12);color:#fff;transform:translateY(-2px)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:40px;
  background:var(--teal-deep);
  background-image:linear-gradient(180deg,rgba(7,26,30,.96),rgba(7,26,30,1)),url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  color:#C7D9DA;
  padding:72px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--teal-light)}
.footer-about{font-size:14.5px;line-height:1.85;color:#9FB8BA;max-width:36ch}
.footer-col strong{display:block;font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14.5px;color:#C7D9DA}
.footer-col a:hover{color:var(--teal-light)}
.footer-contact li{display:flex;align-items:flex-start;gap:9px;font-size:14.5px;color:#9FB8BA;line-height:1.65}
.footer-contact svg{width:16px;height:16px;flex:0 0 auto;margin-top:4px;fill:none;stroke:var(--teal-light);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(199,217,218,.16);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13.5px;color:#8FA8AA;
}
.footer-bottom a{color:#C7D9DA}
.footer-bottom a:hover{color:var(--orange)}
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:110;
  width:46px;height:46px;border-radius:50%;
  background:var(--teal);color:#fff;border:none;cursor:pointer;
  display:grid;place-items:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease),background .25s var(--ease);
  box-shadow:var(--sh-md);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--teal-dark)}
.to-top svg{width:20px;height:20px;fill:none;stroke:#fff;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* 动效 */
.reveal{opacity:0;transform:translateY(12px)}
.reveal.in{opacity:1;transform:none;transition:opacity .4s var(--ease),transform .4s var(--ease)}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .layout{grid-template-columns:minmax(0,1fr) 300px;gap:36px}
  .article-body{padding:40px 42px}
}
@media (max-width:1023px){
  body{font-size:16.5px}
  .nav-links a{padding:8px 12px;font-size:14.5px}
  .menu-btn{display:grid}
  .nav-links{display:none}
  .layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .side{position:static}
  .faq-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .faq-intro{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:44px 38px}
  .section{padding:72px 0}
}
@media (max-width:767px){
  main{padding-top:96px}
  .container{padding:0 18px}
  .site-header{top:10px}
  .nav-dock{height:58px;padding:0 8px 0 14px}
  .brand{font-size:15.5px}
  .brand-mark{width:28px;height:28px;border-radius:9px}
  .nav-actions .btn{display:none}
  .page-band{padding:36px 0 44px}
  .article-head h1{font-size:clamp(26px,7vw,34px)}
  .article-body{padding:28px 22px;border-radius:var(--r)}
  .rich-text{font-size:16.5px;line-height:1.85}
  .rich-text h2{font-size:22px;margin-top:36px}
  .rich-text table{display:block;overflow-x:auto;white-space:nowrap}
  .pager{grid-template-columns:1fr}
  .pager .next{text-align:left}
  .article-foot{flex-direction:column;align-items:flex-start}
  .cta-band{padding:34px 24px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .section{padding:56px 0}
  .section-tight{padding:46px 0}
  .to-top{right:16px;bottom:18px;width:42px;height:42px}
}
@media (max-width:479px){
  body{font-size:16px}
  .article-head h1{font-size:25px}
  .btn{height:46px;padding:0 20px;font-size:14.5px}
  .btn-sm{height:40px}
  .rec-item{grid-template-columns:72px minmax(0,1fr)}
  .rec-item img{width:72px;height:54px}
}

/* roulang page: category1 */
/* ============ 设计令牌 ============ */
:root{
  --c-primary:#0B4F58;
  --c-primary-dark:#06363D;
  --c-primary-bright:#178E99;
  --c-accent:#FF5A22;
  --c-accent-dark:#E0430E;
  --c-bg:#F4F7F7;
  --c-card:#FFFFFF;
  --c-line:#D9E5E5;
  --c-divider:#EDF2F2;
  --c-text:#0D1F23;
  --c-text-2:#566B6E;
  --c-text-3:#8A9C9E;
  --c-invert:#EAF4F4;
  --c-deep:#071A1E;
  --c-deep-line:#1E3A3F;
  --c-ok:#1F8A5B;
  --c-warn:#C9861A;
  --c-err:#C63A34;

  --r-card:16px;
  --r-block:24px;
  --r-input:12px;
  --r-pill:999px;

  --sh-sm:0 1px 2px rgba(7,26,30,.06);
  --sh-md:0 10px 30px -12px rgba(7,26,30,.18);
  --sh-lg:0 30px 60px -30px rgba(7,26,30,.28);

  --ease:cubic-bezier(.2,.7,.2,1);
  --container:1200px;
  --gutter:24px;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary);text-decoration:none;transition:color .25s var(--ease),background-color .25s var(--ease);}
a:hover{color:var(--c-primary-bright);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--c-text);}
p{margin:0;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
svg{display:block;}
:focus-visible{outline:3px solid rgba(23,142,153,.35);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter);}

/* ============ 通用标题与文本 ============ */
.h1{font-size:clamp(34px,5vw,58px);line-height:1.08;font-weight:800;letter-spacing:-.02em;}
.h2{font-size:clamp(26px,3.2vw,38px);line-height:1.2;font-weight:700;}
.h3{font-size:20px;line-height:1.4;font-weight:600;}
.lead{font-size:17px;line-height:1.85;color:var(--c-text-2);}
.muted{color:var(--c-text-2);}
.tiny{font-size:13px;color:var(--c-text-3);letter-spacing:.02em;}
.mono{font-family:"Barlow Condensed","Noto Sans SC",system-ui,sans-serif;letter-spacing:.06em;}

.section{padding:96px 0;}
.section.tight{padding:72px 0;}
.section-head{max-width:720px;margin-bottom:48px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--c-primary-bright);font-weight:600;margin-bottom:14px;
}
.section-head .eyebrow::before{content:"";width:22px;height:2px;background:var(--c-primary-bright);border-radius:2px;}
.section-head p{margin-top:14px;}

/* ============ 浮动 Dock 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  padding:16px 0;
  transition:padding .3s var(--ease);
}
.site-header.is-scrolled{padding:8px 0;}
.nav-dock{
  display:flex;align-items:center;gap:18px;
  width:min(1120px,92vw);margin:0 auto;
  height:64px;padding:0 10px 0 20px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-md);
  transition:height .3s var(--ease),background-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-scrolled .nav-dock{
  height:56px;background:rgba(255,255,255,.95);box-shadow:var(--sh-lg);
}
.brand{
  display:flex;align-items:center;gap:10px;
  font-size:17px;font-weight:800;color:var(--c-primary);letter-spacing:-.01em;
  white-space:nowrap;
}
.brand:hover{color:var(--c-primary-dark);}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:11px;
  background:linear-gradient(150deg,var(--c-primary) 0%,var(--c-primary-bright) 100%);
  flex:0 0 auto;
}
.brand-mark svg{width:20px;height:20px;fill:none;stroke:#EAF4F4;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  display:inline-block;padding:9px 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--c-text-2);
}
.nav-links a:hover{color:var(--c-primary);background:#EAF3F3;}
.nav-links a.active{color:var(--c-primary);background:#E2F0F0;font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:8px;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);background:#fff;
  transition:background-color .25s var(--ease),transform .25s var(--ease),border-color .25s var(--ease);
}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:var(--c-primary);stroke-width:1.7;stroke-linecap:round;}
.icon-btn:hover{background:#EAF3F3;border-color:#BED8D8;transform:translateY(-1px);}
.menu-btn{
  display:none;width:40px;height:40px;border-radius:50%;
  align-items:center;justify-content:center;
  border:1px solid var(--c-line);background:#fff;
}
.menu-btn svg{width:20px;height:20px;fill:none;stroke:var(--c-primary);stroke-width:1.8;stroke-linecap:round;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1.5px solid transparent;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background-color .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .25s var(--ease);}
.btn:hover svg{transform:translateX(4px);}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:var(--sh-md);}
.btn-primary:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-lg);}
.btn-outline{border-color:var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-outline:hover{background:#E1EFEF;color:var(--c-primary-dark);transform:translateY(-2px);}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-primary);}
.btn-ghost:hover{border-color:var(--c-primary-bright);color:var(--c-primary-dark);transform:translateY(-2px);box-shadow:var(--sh-md);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-weight:600;font-size:15px;color:var(--c-primary);
  border-bottom:1px solid rgba(11,79,88,.25);padding-bottom:2px;
}
.text-link svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .25s var(--ease);}
.text-link:hover{border-bottom-color:var(--c-accent);color:var(--c-accent);}
.text-link:hover svg{transform:translateX(4px);}

/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:var(--r-pill);
  font-size:13px;letter-spacing:.02em;font-weight:600;
  background:#E6F2F2;color:var(--c-primary);
}
.tag.accent{background:rgba(255,90,34,.1);color:var(--c-accent-dark);}
.tag.dark{background:rgba(234,244,244,.12);color:var(--c-invert);}

/* ============ 面包屑 ============ */
.breadcrumb{padding:112px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:#B9C9C9;}
.breadcrumb a{color:var(--c-text-2);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb [aria-current]{color:var(--c-primary);font-weight:600;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:48px 0 96px;
  background:
    linear-gradient(180deg,rgba(244,247,247,.6) 0%,rgba(244,247,247,.98) 78%,var(--c-bg) 100%),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(11,79,88,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(11,79,88,.045) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 30% 35%,#000 0%,transparent 72%);
  mask-image:radial-gradient(circle at 30% 35%,#000 0%,transparent 72%);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
}
.hero-copy .tag{margin-bottom:20px;}
.hero-copy h1{margin-bottom:20px;}
.hero-copy .lead{max-width:560px;font-size:18px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.trust-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;}
.trust-item{
  display:flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);box-shadow:var(--sh-sm);
  font-size:14px;color:var(--c-text-2);
}
.trust-item svg{width:16px;height:16px;fill:none;stroke:var(--c-primary-bright);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.hero-figure{position:relative;}
.hero-figure img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--r-block);box-shadow:var(--sh-lg);
  transition:transform .5s var(--ease);
}
.hero-figure:hover img{transform:scale(1.02);}
.hero-figure .float-card{
  position:absolute;left:-18px;bottom:-18px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:14px 18px;box-shadow:var(--sh-md);min-width:172px;
}
.hero-figure .float-card strong{display:block;font-size:24px;font-weight:800;color:var(--c-primary);line-height:1.2;}
.hero-figure .float-card span{font-size:13px;color:var(--c-text-3);}
.hero-figure .trace{
  position:absolute;inset:0;border-radius:var(--r-block);
  border:1px solid rgba(23,142,153,.35);
  transform:translate(14px,14px);pointer-events:none;
}

/* ============ 左文右图区块 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split .media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-block);box-shadow:var(--sh-md);transition:transform .5s var(--ease);}
.split .media:hover img{transform:scale(1.03);}
.split .media{position:relative;}
.split .media .badge-float{
  position:absolute;top:18px;left:18px;
  background:rgba(7,26,30,.78);color:var(--c-invert);
  border-radius:var(--r-pill);padding:7px 14px;font-size:13px;font-weight:600;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}

/* ============ 要点清单 ============ */
.check-list{margin-top:28px;display:grid;gap:14px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:16px 18px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.check-list li:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:#BED8D8;}
.check-list .ico{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;
  background:#E6F2F2;display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.check-list .ico svg{width:14px;height:14px;fill:none;stroke:var(--c-primary);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;}
.check-list strong{display:block;font-size:16px;font-weight:600;margin-bottom:2px;}
.check-list p{font-size:14.5px;color:var(--c-text-2);line-height:1.75;}

/* ============ 步骤时间轴 ============ */
.steps{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  counter-reset:step;
}
.step{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px 22px 24px;box-shadow:var(--sh-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);}
.step .num{
  font-family:"Barlow Condensed","Noto Sans SC",sans-serif;
  font-size:40px;font-weight:700;line-height:1;color:#CFE2E2;letter-spacing:.04em;
}
.step h3{margin:14px 0 8px;font-size:18px;}
.step p{font-size:14.5px;color:var(--c-text-2);}
.step::after{
  content:"";position:absolute;top:44px;right:-14px;width:12px;height:2px;
  background:var(--c-line);
}
.steps .step:last-child::after{display:none;}

/* ============ 误区卡片 ============ */
.mistakes{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.mistake{
  background:#fff;border:1px solid var(--c-line);border-left:4px solid var(--c-accent);
  border-radius:var(--r-card);padding:24px 26px;box-shadow:var(--sh-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.mistake:hover{transform:translateY(-4px);box-shadow:var(--sh-md);}
.mistake .wrong{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--c-err);letter-spacing:.02em;margin-bottom:10px;
}
.mistake .right{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--c-ok);letter-spacing:.02em;margin-top:12px;
}
.mistake h3{font-size:17px;margin-bottom:8px;}
.mistake p{font-size:14.5px;color:var(--c-text-2);}

/* ============ 对照表 ============ */
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-sm);
}
table{width:100%;border-collapse:collapse;min-width:560px;}
thead th{
  text-align:left;font-size:13px;font-weight:600;letter-spacing:.04em;
  color:var(--c-text-3);padding:18px 24px;border-bottom:1px solid var(--c-divider);
  background:#FAFCFC;
}
tbody td{
  padding:18px 24px;border-bottom:1px solid var(--c-divider);
  font-size:15px;color:var(--c-text-2);
}
tbody tr:last-child td{border-bottom:none;}
tbody td:first-child{color:var(--c-text);font-weight:600;}
tbody tr:hover td{background:#FAFCFC;}

/* ============ 深色数据带 ============ */
.deep-band{
  background:var(--c-deep);color:var(--c-invert);position:relative;overflow:hidden;
  padding:72px 0;
}
.deep-band::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  opacity:.12;
}
.deep-band .container{position:relative;z-index:2;}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.metric{padding:0 28px;border-left:1px solid var(--c-deep-line);}
.metric:first-child{border-left:none;padding-left:0;}
.metric .val{
  font-family:"Barlow Condensed","Noto Sans SC",sans-serif;
  font-size:clamp(40px,5vw,62px);font-weight:700;line-height:1;color:#fff;letter-spacing:.02em;
}
.metric .val em{font-style:normal;color:var(--c-primary-bright);}
.metric .lbl{display:block;margin-top:12px;font-size:13px;letter-spacing:.08em;color:#9FBABB;}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-side{position:sticky;top:112px;}
.faq-side p{margin-top:14px;color:var(--c-text-2);font-size:15px;}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:14px;
  overflow:hidden;transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.faq-item.open{border-color:var(--c-primary-bright);box-shadow:var(--sh-md);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;min-height:56px;padding:16px 22px;text-align:left;
  font-size:16.5px;font-weight:600;color:var(--c-text);
}
.faq-q .sign{position:relative;flex:0 0 auto;width:18px;height:18px;}
.faq-q .sign::before,.faq-q .sign::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
  transition:transform .3s var(--ease),background-color .3s 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-item.open .faq-q .sign::after{transform:scaleY(0);}
.faq-item.open .faq-q{color:var(--c-primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
.faq-a p{padding:0 22px 22px;font-size:15px;color:var(--c-text-2);line-height:1.85;}

/* ============ 相关内容卡 ============ */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.related-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:#BED8D8;}
.related-card img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease);}
.related-card:hover img{transform:scale(1.03);}
.related-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.related-body h3{font-size:18px;}
.related-body p{font-size:14.5px;color:var(--c-text-2);flex:1;}
.related-body .text-link{font-size:14px;}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--c-primary-dark) 0%,var(--c-primary) 62%,#0E6570 100%);
  border-radius:var(--r-block);padding:56px;
  display:grid;grid-template-columns:1.6fr 1fr;gap:36px;align-items:center;
  box-shadow:var(--sh-lg);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;
  border-radius:50%;background:rgba(23,142,153,.28);filter:blur(10px);
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{color:#fff;}
.cta-band p{color:#C7D9DA;margin-top:14px;font-size:15.5px;max-width:560px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:stretch;}
.cta-actions .btn{justify-content:center;}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;overflow:hidden;
  background:var(--c-deep);color:#C7D9DA;margin-top:96px;padding:72px 0 0;
}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
  opacity:.08;pointer-events:none;
}
.site-footer .container{position:relative;z-index:2;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:#fff;margin-bottom:16px;}
.footer-about{font-size:14.5px;line-height:1.85;color:#9FBABB;max-width:340px;}
.footer-col strong{display:block;font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{color:#C7D9DA;font-size:14.5px;}
.footer-col a:hover{color:var(--c-primary-bright);}
.footer-contact li{display:flex;align-items:flex-start;gap:8px;font-size:14.5px;color:#9FBABB;}
.footer-contact svg{width:16px;height:16px;fill:none;stroke:var(--c-primary-bright);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;margin-top:5px;flex:0 0 auto;}
.footer-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid var(--c-deep-line);
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13.5px;color:#8A9C9E;
}
.footer-bottom a{color:#C7D9DA;}
.footer-bottom a:hover{color:var(--c-accent);}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  background:#fff;border:1px solid var(--c-line);box-shadow:var(--sh-md);
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),background-color .25s var(--ease);
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}
.to-top:hover{background:#EAF3F3;}
.to-top svg{width:18px;height:18px;fill:none;stroke:var(--c-primary);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:#fff;border-radius:24px 24px 0 0;
  box-shadow:0 -20px 60px -20px rgba(7,26,30,.35);
  padding:22px 22px 32px;
  transform:translateY(110%);
  transition:transform .34s var(--ease);
}
.drawer.open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-head strong{font-size:16px;color:var(--c-primary);}
.drawer-close{width:36px;height:36px;border-radius:50%;border:1px solid var(--c-line);display:flex;align-items:center;justify-content:center;}
.drawer-close svg{width:16px;height:16px;fill:none;stroke:var(--c-primary);stroke-width:2;stroke-linecap:round;}
.drawer ul{display:grid;gap:8px;}
.drawer a{
  display:flex;align-items:center;gap:14px;
  padding:14px 16px;border-radius:14px;font-size:18px;font-weight:600;color:var(--c-text);
  border:1px solid var(--c-line);
}
.drawer a span{font-family:"Barlow Condensed",sans-serif;font-size:15px;color:var(--c-text-3);letter-spacing:.08em;}
.drawer a.active{background:#E2F0F0;color:var(--c-primary);border-color:#BED8D8;}
.drawer .btn{margin-top:16px;width:100%;justify-content:center;}
.scrim{
  position:fixed;inset:0;background:rgba(7,26,30,.45);z-index:85;
  opacity:0;pointer-events:none;transition:opacity .3s var(--ease);
}
.scrim.show{opacity:1;pointer-events:auto;}

/* ============ 进场动画 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.visible{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--gutter:22px;}
  .section{padding:88px 0;}
  .hero-grid{gap:36px;}
}
@media (max-width:1023px){
  .nav-links{display:none;}
  .menu-btn{display:inline-flex;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-figure{max-width:620px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .steps .step:nth-child(2)::after{display:none;}
  .metrics{grid-template-columns:repeat(2,1fr);row-gap:34px;}
  .metric:nth-child(3){border-left:none;padding-left:0;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .faq-side{position:static;}
  .related-grid{grid-template-columns:1fr;max-width:560px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{grid-template-columns:1fr;padding:44px;}
  .breadcrumb{padding-top:104px;}
}
@media (max-width:767px){
  body{font-size:15.5px;}
  .section{padding:64px 0;}
  .section.tight{padding:56px 0;}
  .nav-actions .btn-sm{display:none;}
  .hero{padding:32px 0 64px;}
  .hero-actions .btn{width:100%;justify-content:center;}
  .hero-figure .float-card{left:12px;bottom:12px;min-width:150px;}
  .hero-figure .trace{display:none;}
  .mistakes{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .steps .step::after{display:none;}
  .metrics{grid-template-columns:1fr;gap:26px;}
  .metric{padding:0;border-left:none;border-top:1px solid var(--c-deep-line);padding-top:22px;}
  .metric:first-child{border-top:none;padding-top:0;}
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{margin-top:64px;padding-top:56px;}
  .cta-band{padding:32px 24px;border-radius:20px;}
  .to-top{right:16px;bottom:18px;}
}
@media (max-width:479px){
  .h1{font-size:32px;}
  .card,.related-card{border-radius:14px;}
  .btn{height:46px;padding:0 20px;font-size:14.5px;}
  .hero-figure img{border-radius:18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ice-900:#06363D;
  --ice-800:#0B4F58;
  --ice-500:#178E99;
  --ice-200:#C7D9DA;
  --ice-100:#E3F1F2;
  --orange:#FF5A22;
  --orange-dark:#E0430E;
  --bg:#F4F7F7;
  --card:#FFFFFF;
  --line:#D9E5E5;
  --divider:#EDF2F2;
  --text:#0D1F23;
  --muted:#566B6E;
  --weak:#8A9C9E;
  --dark:#071A1E;
  --dark-2:#0C262B;
  --on-dark:#EAF4F4;
  --success:#1F8A5B;
  --radius-card:16px;
  --radius-lg:24px;
  --radius-input:12px;
  --radius-pill:999px;
  --shadow-sm:0 1px 2px rgba(7,26,30,.06);
  --shadow-md:0 10px 30px -12px rgba(7,26,30,.18);
  --shadow-lg:0 30px 60px -30px rgba(7,26,30,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:var(--ice-800);text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--ice-500)}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
svg{fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
:focus-visible{outline:3px solid rgba(23,142,153,.35);outline-offset:2px;border-radius:6px}

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

/* ---------- header / dock nav ---------- */
.site-header{position:fixed;top:18px;left:0;right:0;z-index:120;pointer-events:none}
.nav-dock{
  pointer-events:auto;
  width:min(1120px,92vw);
  margin:0 auto;
  min-height:64px;
  display:flex;
  align-items:center;
  gap:20px;
  padding:0 14px 0 20px;
  border-radius:var(--radius-pill);
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  box-shadow:var(--shadow-md);
  transition:min-height .3s var(--ease),background .3s var(--ease),box-shadow .3s var(--ease);
}
.nav-dock.scrolled{min-height:56px;background:rgba(255,255,255,.95);box-shadow:var(--shadow-lg)}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:800;
  letter-spacing:-.01em;
  color:var(--ice-900);
  white-space:nowrap;
}
.brand:hover{color:var(--ice-800)}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;
  display:grid;place-items:center;
  border-radius:10px;
  background:linear-gradient(140deg,var(--ice-800),var(--ice-500));
  color:#fff;
}
.brand-mark svg{width:20px;height:20px;stroke-width:1.8}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  display:inline-block;
  padding:8px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
  border-radius:var(--radius-pill);
  position:relative;
  transition:color .25s var(--ease),background .25s var(--ease);
}
.nav-links a:hover{color:var(--ice-800);background:var(--ice-100)}
.nav-links a.active{color:var(--ice-900);font-weight:700;background:var(--ice-100)}
.nav-links a.active::after{
  content:"";
  position:absolute;left:50%;bottom:1px;transform:translateX(-50%);
  width:20px;height:2px;border-radius:2px;background:var(--ice-500);
}
.nav-actions{display:flex;align-items:center;gap:8px;margin-left:8px}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;
  border:1px solid var(--line);border-radius:var(--radius-pill);
  background:#fff;color:var(--ice-800);cursor:pointer;
  transition:border-color .25s var(--ease),color .25s var(--ease),background .25s var(--ease);
}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{border-color:var(--ice-500);color:var(--ice-500);background:var(--ice-100)}
.menu-btn{
  display:none;width:40px;height:40px;place-items:center;
  border:1px solid var(--line);border-radius:var(--radius-pill);
  background:#fff;color:var(--ice-900);cursor:pointer;
}
.menu-btn svg{width:20px;height:20px}
.menu-btn:hover{border-color:var(--ice-500)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;
  border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1.5px solid transparent;cursor:pointer;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.btn svg{width:16px;height:16px;transition:transform .25s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:var(--orange);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--orange-dark);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--ice-900);border-color:var(--ice-500)}
.btn-ghost:hover{background:var(--ice-100);color:var(--ice-900);border-color:var(--ice-800)}
.btn-light{background:#fff;color:var(--ice-900)}
.btn-light:hover{background:var(--ice-100);color:var(--ice-900);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn:disabled,.btn[disabled]{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- mobile drawer ---------- */
.mobile-drawer{
  position:fixed;left:0;right:0;bottom:0;z-index:130;
  background:#fff;border-top-left-radius:var(--radius-lg);border-top-right-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);padding:22px 24px 30px;
  transform:translateY(102%);transition:transform .35s var(--ease);
}
.mobile-drawer.open{transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-head strong{font-size:16px;color:var(--ice-900)}
.drawer-close{width:36px;height:36px;border-radius:var(--radius-pill);border:1px solid var(--line);background:#fff;color:var(--muted);cursor:pointer;line-height:1}
.drawer-links li+li{border-top:1px solid var(--divider)}
.drawer-links a{
  display:flex;align-items:center;gap:14px;
  padding:16px 4px;font-size:18px;font-weight:600;color:var(--ice-900);
}
.drawer-links a span{font-size:13px;font-weight:700;color:var(--ice-500);letter-spacing:.08em;font-family:"Barlow Condensed",system-ui,sans-serif}
.drawer-links a.active{color:var(--ice-500)}

/* ---------- breadcrumb ---------- */
.breadcrumb{margin:0 0 18px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--weak)}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--ice-500)}
.breadcrumb [aria-current]{color:var(--ice-800);font-weight:600}

/* ---------- hero band ---------- */
.hero-band{padding:122px 0 0}
.hero-figure{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  background:var(--ice-900);
  box-shadow:var(--shadow-lg);
  min-height:440px;
  display:flex;align-items:flex-end;
}
.hero-figure img{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;opacity:.62;
}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,54,61,.18) 0%,rgba(6,54,61,.72) 58%,rgba(6,54,61,.92) 100%);
}
.hero-overlay{position:relative;z-index:2;padding:52px 48px 48px;max-width:820px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  color:var(--ice-200);font-size:13px;font-weight:600;letter-spacing:.06em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange)}
.hero-overlay h1{
  margin:18px 0 0;
  font-size:clamp(32px,4.6vw,56px);
  line-height:1.1;
  letter-spacing:-.02em;
  font-weight:800;
  color:#fff;
}
.hero-sub{margin-top:16px;max-width:620px;font-size:17px;line-height:1.85;color:var(--on-dark)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.trust-row{
  display:grid;grid-template-columns:repeat(3,1fr);gap:16px;
  margin-top:26px;
}
.trust-item{
  display:flex;align-items:center;gap:12px;
  padding:16px 18px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
}
.trust-item svg{width:20px;height:20px;color:var(--ice-500);flex:0 0 20px}
.trust-item b{display:block;font-size:15px;color:var(--ice-900)}
.trust-item span{display:block;font-size:13px;color:var(--muted)}

/* ---------- sections ---------- */
.section{padding:104px 0}
.section-alt{background:#fff;border-top:1px solid var(--divider);border-bottom:1px solid var(--divider)}
.section-head{max-width:720px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-title{font-size:clamp(25px,3vw,38px);line-height:1.22;font-weight:700;letter-spacing:-.015em;color:var(--ice-900)}
.section-desc{margin-top:14px;font-size:16px;color:var(--muted)}
.tag{
  display:inline-block;padding:5px 12px;border-radius:var(--radius-pill);
  background:var(--ice-100);color:var(--ice-800);
  font-size:13px;font-weight:600;letter-spacing:.03em;
}
.tag.orange{background:rgba(255,90,34,.12);color:var(--orange-dark)}

/* ---------- spec grid ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.spec-card{
  position:relative;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 28px 28px;box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.spec-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--ice-200)}
.spec-num{
  font-family:"Barlow Condensed",system-ui,sans-serif;
  font-size:46px;line-height:1;font-weight:700;letter-spacing:.02em;
  color:var(--ice-100);
}
.spec-card h3{margin-top:10px;font-size:20px;font-weight:600;color:var(--ice-900)}
.spec-card p{margin-top:10px;font-size:15.5px;color:var(--muted);line-height:1.85}

/* ---------- stat band ---------- */
.stat-band{background:var(--dark);padding:74px 0;position:relative;overflow:hidden}
.stat-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(115deg,transparent 46%,rgba(23,142,153,.10) 46.6%,transparent 47.4%),
                   linear-gradient(115deg,transparent 62%,rgba(23,142,153,.08) 62.6%,transparent 63.4%);
  pointer-events:none;
}
.stat-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-item{padding:6px 26px;border-left:1px solid #1E3A3F}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-value{
  font-family:"Barlow Condensed",system-ui,sans-serif;
  font-size:clamp(46px,5.4vw,68px);line-height:1;font-weight:700;letter-spacing:.01em;
  color:#fff;
}
.stat-value em{font-style:normal;color:var(--ice-500)}
.stat-label{margin-top:12px;font-size:13px;letter-spacing:.14em;color:var(--ice-200);text-transform:uppercase}

/* ---------- timeline ---------- */
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:27px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,var(--ice-500),var(--ice-100));
}
.tl-item{position:relative;display:grid;grid-template-columns:56px 1fr;gap:24px;padding:0 0 34px}
.tl-item:last-child{padding-bottom:0}
.tl-index{
  width:56px;height:56px;border-radius:50%;
  display:grid;place-items:center;
  background:#fff;border:2px solid var(--ice-500);color:var(--ice-800);
  font-family:"Barlow Condensed",system-ui,sans-serif;
  font-size:22px;font-weight:700;letter-spacing:.02em;
  box-shadow:var(--shadow-sm);position:relative;z-index:2;
}
.tl-body{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 26px;box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.tl-body:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.tl-body h3{font-size:19px;font-weight:600;color:var(--ice-900)}
.tl-body p{margin-top:8px;font-size:15.5px;color:var(--muted)}

/* ---------- compare table ---------- */
.table-scroll{
  overflow-x:auto;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-sm);
}
.compare-table{width:100%;min-width:760px;border-collapse:collapse;font-size:15px}
.compare-table caption{
  padding:22px 26px 4px;text-align:left;font-size:15px;color:var(--muted);
}
.compare-table th,.compare-table td{padding:16px 22px;text-align:left;border-bottom:1px solid var(--divider)}
.compare-table thead th{
  background:var(--ice-900);color:#fff;font-size:14px;font-weight:600;
  letter-spacing:.04em;white-space:nowrap;border-bottom:0;
}
.compare-table tbody tr:hover{background:#F8FBFB}
.compare-table tbody tr:last-child td{border-bottom:0}
.compare-table td:first-child{font-weight:600;color:var(--ice-900)}
.compare-table .hl{color:var(--orange-dark);font-weight:600}
.table-note{margin-top:14px;font-size:13.5px;color:var(--weak)}

/* ---------- scene cards ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.scene-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.scene-media{aspect-ratio:16/10;overflow:hidden;background:var(--ice-100)}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.scene-card:hover .scene-media img{transform:scale(1.03)}
.scene-body{padding:22px 22px 26px}
.scene-body h3{font-size:19px;font-weight:600;color:var(--ice-900)}
.scene-body p{margin-top:8px;font-size:15px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-aside{position:sticky;top:110px}
.faq-aside .section-title{font-size:clamp(24px,2.6vw,34px)}
.faq-aside p{margin-top:14px;font-size:15.5px;color:var(--muted)}
.faq-list{display:grid;gap:14px}
.faq-item{
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.faq-item.open{border-color:var(--ice-500);box-shadow:var(--shadow-md)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:64px;padding:18px 22px;background:none;border:0;cursor:pointer;
  font-size:16.5px;font-weight:600;color:var(--ice-900);text-align:left;
}
.faq-icon{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;border:1.5px solid var(--ice-200);color:var(--ice-500);
  transition:transform .3s var(--ease),background .3s var(--ease),border-color .3s var(--ease),color .3s var(--ease);
}
.faq-icon svg{width:14px;height:14px;stroke-width:2}
.faq-item.open .faq-icon{background:var(--ice-500);border-color:var(--ice-500);color:#fff;transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a p{padding:0 22px 22px;font-size:15.5px;color:var(--muted)}

/* ---------- related ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.related-card{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px;box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--ice-200)}
.related-media{width:92px;height:74px;flex:0 0 92px;border-radius:12px;overflow:hidden;background:var(--ice-100)}
.related-media img{width:100%;height:100%;object-fit:cover}
.related-body h3{font-size:16.5px;font-weight:600;color:var(--ice-900);line-height:1.5}
.related-body p{margin-top:6px;font-size:14px;color:var(--muted)}
.related-more{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:14px;font-weight:600;color:var(--ice-500)}
.related-more svg{width:14px;height:14px;transition:transform .25s var(--ease)}
.related-card:hover .related-more svg{transform:translateX(4px)}

/* ---------- CTA band ---------- */
.cta-band{padding:0 0 104px}
.cta-inner{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  background:linear-gradient(135deg,var(--ice-900),var(--ice-800));
  padding:56px 52px;
  display:grid;grid-template-columns:1fr auto;gap:36px;align-items:center;
  box-shadow:var(--shadow-lg);
}
.cta-inner::before{
  content:"";position:absolute;right:-60px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,142,153,.35),transparent 68%);
}
.cta-inner h2{position:relative;font-size:clamp(23px,2.8vw,34px);line-height:1.25;font-weight:700;color:#fff;letter-spacing:-.015em}
.cta-inner p{position:relative;margin-top:12px;max-width:560px;font-size:15.5px;color:var(--ice-200)}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{
  position:relative;overflow:hidden;
  background:var(--dark);color:var(--on-dark);padding:74px 0 26px;
}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(120deg,transparent 55%,rgba(23,142,153,.09) 55.6%,transparent 56.4%),
                   linear-gradient(120deg,transparent 72%,rgba(23,142,153,.07) 72.6%,transparent 73.4%);
  pointer-events:none;
}
.footer-grid{
  position:relative;display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid #163135;
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#fff}
.footer-about{margin-top:16px;font-size:14.5px;line-height:1.85;color:var(--ice-200);max-width:360px}
.footer-col strong{display:block;margin-bottom:16px;font-size:15px;color:#fff;letter-spacing:.02em}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14.5px;color:var(--ice-200)}
.footer-col a:hover{color:var(--ice-500)}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:var(--ice-200)}
.footer-contact svg{width:16px;height:16px;flex:0 0 16px;margin-top:5px;color:var(--ice-500)}
.footer-bottom{
  position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-top:22px;font-size:13.5px;color:var(--weak);
}
.footer-bottom a{color:var(--ice-200)}
.footer-bottom a:hover{color:var(--orange)}

/* ---------- to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:110;
  width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;border:1px solid var(--line);
  background:#fff;color:var(--ice-800);box-shadow:var(--shadow-md);
  cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease),color .25s var(--ease);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{color:var(--orange)}
.to-top svg{width:20px;height:20px}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 22px}
  .nav-links a{padding:8px 11px;font-size:14.5px}
  .hero-overlay{padding:44px 38px 40px}
}
@media (max-width:1023px){
  body{font-size:16px}
  .section{padding:84px 0}
  .nav-links{display:none}
  .menu-btn{display:grid}
  .nav-actions .btn-sm{display:none}
  .spec-grid{grid-template-columns:1fr}
  .trust-row{grid-template-columns:1fr 1fr}
  .stat-grid{grid-template-columns:1fr 1fr;gap:28px 0}
  .stat-item:nth-child(3){border-left:0;padding-left:0}
  .faq-grid{grid-template-columns:1fr;gap:28px}
  .faq-aside{position:static}
  .scene-grid{grid-template-columns:1fr 1fr}
  .related-grid{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;padding:44px 34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:767px){
  .hero-band{padding-top:104px}
  .hero-figure{min-height:0}
  .hero-figure img{position:relative;height:220px;opacity:1}
  .hero-figure::after{background:linear-gradient(180deg,rgba(6,54,61,.05) 0%,rgba(6,54,61,.86) 42%,rgba(6,54,61,.96) 100%)}
  .hero-figure{flex-direction:column;align-items:stretch;background:var(--ice-900)}
  .hero-overlay{padding:26px 24px 32px}
  .hero-sub{font-size:16px}
  .hero-actions .btn{width:100%}
  .trust-row{grid-template-columns:1fr;margin-top:20px}
  .section{padding:64px 0}
  .scene-grid{grid-template-columns:1fr}
  .timeline::before{left:21px}
  .tl-item{grid-template-columns:44px 1fr;gap:16px}
  .tl-index{width:44px;height:44px;font-size:18px}
  .tl-body{padding:20px}
  .cta-band{padding-bottom:64px}
  .cta-inner{padding:34px 24px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .stat-grid{grid-template-columns:1fr 1fr;gap:26px 0}
  .stat-item{padding:0 16px}
  .stat-item:nth-child(odd){border-left:0;padding-left:0}
  .related-card{flex-direction:row}
  .to-top{right:18px;bottom:18px}
}
@media (max-width:479px){
  body{font-size:15.5px}
  .container{padding:0 18px}
  .nav-dock{padding:0 10px 0 14px;gap:12px}
  .brand{font-size:15px}
  .hero-overlay h1{font-size:29px}
  .section{padding:56px 0}
  .spec-card{padding:24px 20px}
  .stat-value{font-size:44px}
  .cta-inner h2{font-size:22px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --teal:#0B4F58;
  --teal-deep:#06363D;
  --teal-bright:#178E99;
  --orange:#FF5A22;
  --orange-hover:#E0430E;
  --bg:#F4F7F7;
  --card:#FFFFFF;
  --line:#D9E5E5;
  --hair:#EDF2F2;
  --ink:#0D1F23;
  --muted:#566B6E;
  --weak:#8A9C9E;
  --on-dark:#EAF4F4;
  --dark:#071A1E;
  --dark-line:#1E3A3F;
  --ok:#1F8A5B;
  --warn:#C9861A;
  --err:#C63A34;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(7,26,30,.06);
  --sh-md:0 10px 30px -12px rgba(7,26,30,.18);
  --sh-lg:0 30px 60px -30px rgba(7,26,30,.28);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font-num:"Barlow Condensed","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  font-family:"Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--teal);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--teal-bright)}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:3px solid rgba(23,142,153,.35);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:#EFF5F5}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--teal-bright);font-weight:700;margin-bottom:14px;
  font-family:var(--font-num);
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--orange)}
.section-title{
  position:relative;padding-left:16px;
  font-size:clamp(26px,3.2vw,40px);line-height:1.2;font-weight:700;letter-spacing:-.01em;
}
.section-title::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--teal-bright)}
.section-sub{margin-top:14px;color:var(--muted);font-size:16.5px;max-width:720px}
.section-head{margin-bottom:48px;display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1.5px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform .25s var(--ease),background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .25s var(--ease)}
.btn:hover svg{transform:translateX(4px)}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 12px 26px -14px rgba(255,90,34,.75)}
.btn-primary:hover{background:var(--orange-hover);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-md)}
.btn-primary:active{transform:translateY(0)}
.btn-solid{background:var(--teal);color:#fff;box-shadow:0 12px 26px -16px rgba(11,79,88,.8)}
.btn-solid:hover{background:var(--teal-deep);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-md)}
.btn-ghost{border-color:rgba(11,79,88,.3);color:var(--teal);background:transparent}
.btn-ghost:hover{background:#E7F1F2;border-color:var(--teal-bright);color:var(--teal)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn[disabled]{opacity:.6;cursor:not-allowed;transform:none}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;color:var(--teal)}
.text-link svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .25s var(--ease)}
.text-link:hover svg{transform:translateX(4px)}

/* ---------- Dock 导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:14px 0 0}
.nav-dock{
  width:min(1120px,92vw);margin:0 auto;
  display:flex;align-items:center;gap:16px;
  height:64px;padding:0 14px 0 20px;
  background:rgba(255,255,255,.86);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border:1px solid var(--line);border-radius:var(--r-pill);
  box-shadow:var(--sh-md);
  transition:height .3s var(--ease),background .3s var(--ease),box-shadow .3s var(--ease);
}
.nav-dock.is-compact{height:56px;background:rgba(255,255,255,.95);box-shadow:var(--sh-lg)}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--ink);letter-spacing:-.01em;white-space:nowrap}
.brand:hover{color:var(--teal)}
.brand-mark{
  width:34px;height:34px;border-radius:11px;flex:0 0 34px;
  background:linear-gradient(140deg,var(--teal-bright),var(--teal-deep));
  display:grid;place-items:center;box-shadow:0 6px 14px -8px rgba(11,79,88,.9);
}
.brand-mark svg{width:18px;height:18px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.nav-links{display:flex;align-items:center;gap:2px;list-style:none;margin:0 auto;padding:0}
.nav-links a{
  display:block;padding:9px 15px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--muted);
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-links a:hover{color:var(--teal);background:#EAF4F4}
.nav-links a.active{color:var(--teal);font-weight:700;background:#E4F0F1;box-shadow:inset 0 -2px 0 var(--teal-bright)}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;cursor:pointer;
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:var(--muted);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:stroke .22s var(--ease)}
.icon-btn:hover{border-color:var(--teal-bright);background:#EAF4F4}
.icon-btn:hover svg{stroke:var(--teal)}
.menu-btn{
  display:none;width:40px;height:40px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;cursor:pointer;
  place-items:center;
}
.menu-btn svg{width:20px;height:20px;fill:none;stroke:var(--teal);stroke-width:1.9;stroke-linecap:round}
.drawer{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:#fff;border-radius:22px 22px 0 0;
  box-shadow:0 -24px 60px -30px rgba(7,26,30,.5);
  padding:22px 20px 30px;
  transform:translateY(110%);visibility:hidden;
  transition:transform .34s var(--ease),visibility .34s var(--ease);
}
.drawer.open{transform:translateY(0);visibility:visible}
.drawer-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.drawer-head strong{font-size:15px;color:var(--teal);letter-spacing:.04em}
.drawer-close{width:34px;height:34px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;cursor:pointer;display:grid;place-items:center}
.drawer-close svg{width:16px;height:16px;fill:none;stroke:var(--muted);stroke-width:2;stroke-linecap:round}
.drawer ul{list-style:none;display:grid;gap:6px;margin-bottom:18px}
.drawer ul a{
  display:flex;align-items:center;gap:12px;
  padding:14px 12px;border-radius:14px;
  font-size:18px;font-weight:600;color:var(--ink);
  border-bottom:1px solid var(--hair);
}
.drawer ul a span{font-family:var(--font-num);font-size:13px;color:var(--weak);letter-spacing:.1em}
.drawer ul a.active{color:var(--teal);background:#EAF4F4}
.drawer .btn{width:100%}
.drawer-mask{position:fixed;inset:0;background:rgba(7,26,30,.42);opacity:0;visibility:hidden;transition:.3s var(--ease);z-index:85}
.drawer-mask.open{opacity:1;visibility:visible}

/* ---------- Hero ---------- */
.hero{position:relative;padding:64px 0 84px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background-image:linear-gradient(180deg,rgba(244,247,247,.9),rgba(244,247,247,.99)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(rgba(11,79,88,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(11,79,88,.05) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 72%);
  mask-image:linear-gradient(180deg,#000,transparent 72%);
}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--weak);margin-bottom:26px;flex-wrap:wrap}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--teal-bright)}
.crumbs .sep{color:var(--line)}
.crumbs .current{color:var(--teal);font-weight:600}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center}
.hero h1{
  font-size:clamp(34px,5vw,62px);line-height:1.08;font-weight:800;letter-spacing:-.02em;margin-bottom:20px;
}
.hero h1 em{font-style:normal;color:var(--teal-bright)}
.hero-lead{font-size:17.5px;color:var(--muted);max-width:560px;margin-bottom:28px}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:#E4F0F1;color:var(--teal);
  font-size:13.5px;font-weight:600;letter-spacing:.02em;
}
.tag-dot{width:6px;height:6px;border-radius:50%;background:var(--orange)}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:560px}
.fact{border-left:2px solid var(--line);padding-left:14px}
.fact b{display:block;font-family:var(--font-num);font-size:26px;line-height:1.1;color:var(--teal);font-weight:700}
.fact span{font-size:13px;color:var(--weak);letter-spacing:.02em}
.hero-media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-lg);aspect-ratio:16/11;background:#DCE8E8}
.hero-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.hero-media:hover img{transform:scale(1.03)}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,79,88,.06),rgba(11,79,88,.22));
}
.hero-badge{
  position:absolute;left:18px;bottom:18px;z-index:2;
  background:rgba(255,255,255,.93);border-radius:14px;
  padding:10px 16px;box-shadow:var(--sh-md);
  font-size:13.5px;font-weight:700;color:var(--teal);letter-spacing:.02em;
}

/* ---------- 网格信息块 ---------- */
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.info-card{
  position:relative;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px 26px 30px;box-shadow:var(--sh-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:#C7DCDC}
.info-num{
  font-family:var(--font-num);font-size:44px;line-height:1;
  color:#DCE9EA;font-weight:700;letter-spacing:.02em;margin-bottom:10px;
}
.info-card h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:10px}
.info-card p{color:var(--muted);font-size:15.5px;line-height:1.85}
.info-card .mark{
  position:absolute;top:26px;right:26px;width:8px;height:8px;border-radius:50%;
  background:#DCE9EA;transition:background .3s var(--ease);
}
.info-card:hover .mark{background:var(--orange)}

/* ---------- 数据条 ---------- */
.stats-band{
  background:var(--dark);color:var(--on-dark);
  padding:64px 0;position:relative;overflow:hidden;
}
.stats-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(23,142,153,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(23,142,153,.09) 1px,transparent 1px);
  background-size:60px 60px;opacity:.7;
}
.stats-inner{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:6px 26px;border-left:1px solid var(--dark-line)}
.stat:first-child{border-left:none;padding-left:0}
.stat-num{
  font-family:var(--font-num);font-weight:700;
  font-size:clamp(44px,5vw,68px);line-height:1;color:#fff;letter-spacing:.01em;
}
.stat-num i{font-style:normal;font-size:.5em;color:var(--teal-bright);margin-left:4px}
.stat-label{margin-top:12px;font-size:13px;letter-spacing:.14em;color:#8FA6A7;text-transform:uppercase}
.stat-desc{margin-top:6px;font-size:14.5px;color:#B7CBCC}

/* ---------- 组合对照 ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:start}
.panel{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:34px 32px;box-shadow:var(--sh-sm);
}
.panel h3{font-size:22px;font-weight:600;margin-bottom:16px;line-height:1.4}
.panel p{color:var(--muted);font-size:16px;margin-bottom:18px}
.check-list{list-style:none;display:grid;gap:14px}
.check-list li{display:flex;gap:12px;font-size:15.5px;color:var(--muted);line-height:1.75}
.check-list svg{width:19px;height:19px;flex:0 0 19px;margin-top:5px;fill:none;stroke:var(--teal-bright);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--sh-sm);
}
.data-table{width:100%;border-collapse:separate;border-spacing:0;min-width:520px;font-size:15px}
.data-table th{
  text-align:left;padding:15px 18px;background:#EAF4F4;color:var(--teal);
  font-weight:700;font-size:14px;letter-spacing:.03em;white-space:nowrap;
}
.data-table td{padding:15px 18px;border-top:1px solid var(--hair);color:var(--muted);vertical-align:top}
.data-table tbody tr:hover td{background:#FAFDFD}
.badge{display:inline-block;padding:3px 10px;border-radius:var(--r-pill);font-size:12.5px;font-weight:700;letter-spacing:.02em}
.badge-yes{background:rgba(31,138,91,.12);color:var(--ok)}
.badge-no{background:rgba(198,58,52,.1);color:var(--err)}
.badge-mid{background:rgba(201,134,26,.14);color:var(--warn)}
.media-figure{border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-md);margin-top:22px;aspect-ratio:16/10;background:#DCE8E8}
.media-figure img{width:100%;height:100%;object-fit:cover}

/* ---------- 相关内容卡片 ---------- */
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;box-shadow:var(--sh-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-lg);border-color:#C7DCDC}
.rel-media{aspect-ratio:16/10;overflow:hidden;background:#DCE8E8}
.rel-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.rel-card:hover .rel-media img{transform:scale(1.03)}
.rel-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:19px;font-weight:600;line-height:1.45}
.rel-body p{font-size:15px;color:var(--muted);flex:1}
.rel-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--weak);letter-spacing:.02em}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:700;color:var(--teal)}
.arrow-link svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;transition:transform .25s var(--ease)}
.arrow-link:hover svg{transform:translateX(4px)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-aside{position:sticky;top:110px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.faq-item[open]{border-color:var(--teal-bright);box-shadow:var(--sh-md)}
.faq-item summary{
  list-style:none;cursor:pointer;
  min-height:56px;padding:18px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16.5px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--teal)}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--teal-bright);border-radius:2px;
  transition:transform .26s var(--ease),opacity .26s var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-body{padding:0 22px 22px;color:var(--muted);font-size:16px;line-height:1.85;animation:fadeUp .26s var(--ease)}
@keyframes fadeUp{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  padding:64px 56px;color:#fff;
  background-image:linear-gradient(115deg,rgba(6,54,61,.94),rgba(7,26,30,.9)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  box-shadow:var(--sh-lg);
}
.cta-band h2{font-size:clamp(26px,3.2vw,38px);line-height:1.22;font-weight:700;margin-bottom:14px;max-width:640px}
.cta-band p{color:#C7D9DA;font-size:16.5px;max-width:600px;margin-bottom:30px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.42);color:#fff}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}
.back-home{margin-top:24px;font-size:14.5px;color:#9FB7B8}
.back-home a{color:#C7D9DA;text-decoration:underline;text-decoration-color:rgba(199,217,218,.45)}
.back-home a:hover{color:var(--orange)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--dark);color:#C7D9DA;padding:76px 0 28px;
  position:relative;overflow:hidden;margin-top:96px;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(23,142,153,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(23,142,153,.08) 1px,transparent 1px);
  background-size:70px 70px;
}
.footer-grid{position:relative;display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:18px;margin-bottom:16px}
.footer-about{font-size:14.5px;line-height:1.9;color:#9FB7B8;max-width:340px}
.footer-col strong{display:block;color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{list-style:none;display:grid;gap:11px}
.footer-col a{color:#C7D9DA;font-size:14.5px}
.footer-col a:hover{color:var(--teal-bright)}
.footer-contact li{display:flex;gap:9px;align-items:flex-start;font-size:14.5px;color:#9FB7B8;line-height:1.7}
.footer-contact svg{width:16px;height:16px;flex:0 0 16px;margin-top:5px;fill:none;stroke:var(--teal-bright);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.footer-bottom{
  position:relative;margin-top:52px;padding-top:22px;border-top:1px solid var(--dark-line);
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13.5px;color:#8FA6A7;
}
.footer-bottom a{color:#C7D9DA}
.footer-bottom a:hover{color:var(--orange)}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:70;
  width:46px;height:46px;border-radius:var(--r-pill);border:none;
  background:var(--teal);color:#fff;cursor:pointer;
  display:grid;place-items:center;box-shadow:var(--sh-md);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:.3s var(--ease);
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--teal-bright)}
.to-top svg{width:18px;height:18px;fill:none;stroke:#fff;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1!important;transform:none!important}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 22px}
  .section{padding:84px 0}
  .hero-grid{gap:34px}
}
@media (max-width:1023px){
  body{font-size:16.5px}
  .nav-links{gap:0}
  .nav-links a{padding:8px 11px;font-size:14.5px}
  .nav-actions .btn-sm{display:none}
  .hero{padding:48px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-media{order:-1;aspect-ratio:16/9}
  .info-grid{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:28px}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .faq-aside{position:static}
  .stats-inner{grid-template-columns:repeat(2,1fr);gap:34px 0}
  .stat{border-left:none;padding:0 20px}
  .stat:nth-child(odd){padding-left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .cta-band{padding:52px 36px}
}
@media (max-width:767px){
  .nav-links{display:none}
  .menu-btn{display:grid}
  .nav-dock{padding:0 12px 0 16px;gap:10px}
  .icon-btn{display:none}
  .nav-actions .btn-primary{height:38px;padding:0 14px;font-size:13.5px}
  .section{padding:60px 0}
  .hero h1{font-size:clamp(30px,8vw,40px)}
  .hero-lead{font-size:16px}
  .hero-facts{grid-template-columns:1fr 1fr;gap:14px}
  .hero-cta .btn{flex:1 1 auto}
  .info-grid{grid-template-columns:1fr}
  .cards-3{grid-template-columns:1fr}
  .stats-inner{grid-template-columns:1fr 1fr}
  .stats-band{padding:48px 0}
  .cta-band{padding:40px 24px;border-radius:var(--r-md)}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding:60px 0 24px;margin-top:64px}
  .to-top{right:16px;bottom:18px}
}
@media (max-width:479px){
  .container{padding:0 16px}
  .section{padding:52px 0}
  .hero-facts{grid-template-columns:1fr}
  .stats-inner{grid-template-columns:1fr}
  .stat{padding:0}
  .info-card{padding:24px 20px}
  .panel{padding:26px 20px}
  .faq-item summary{font-size:15.5px;padding:16px 18px}
  .faq-body{padding:0 18px 18px;font-size:15.5px}
}