/* roulang page: index */
:root{
  --bg:#050A12;
  --bg-2:#0A1421;
  --bg-3:#0E1A29;
  --brand:#37D6C0;
  --brand-soft:rgba(55,214,192,.14);
  --brand-line:rgba(55,214,192,.45);
  --amber:#E9A15C;
  --amber-soft:rgba(233,161,92,.12);
  --text:#E8F0F7;
  --text-2:#93A6BA;
  --text-3:#6B7E92;
  --line:rgba(120,180,200,.16);
  --line-soft:rgba(255,255,255,.08);
  --glass:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.035));
  --r-card:16px;
  --r-img:18px;
  --r-badge:6px;
  --r-input:10px;
  --shadow:0 18px 40px -18px rgba(0,0,0,.75);
  --shadow-hover:0 24px 52px -20px rgba(0,0,0,.85);
  --nav-w:232px;
  --gap:24px;
  --sec-gap:96px;
  --ease:200ms cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--brand);text-decoration:none;background-color:transparent;transition:color var(--ease),border-color var(--ease);}
a:hover{color:#6FE9D8;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:1.1em;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}

/* ---------- 布局骨架 ---------- */
.layout{min-height:100vh;}
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  padding:26px 20px 22px;
  display:flex;
  flex-direction:column;
  gap:26px;
  background:linear-gradient(180deg,rgba(10,20,33,.96),rgba(6,12,21,.98));
  border-right:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  z-index:60;
  overflow-y:auto;
}
.stage{
  margin-left:var(--nav-w);
  min-height:100vh;
  position:relative;
}
.container{
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:0 40px;
}

/* ---------- 品牌标 ---------- */
.brand-link{display:flex;align-items:center;gap:10px;}
.brand-mark{
  position:relative;
  width:30px;height:30px;flex:none;
  border-radius:9px;
  background:linear-gradient(140deg,var(--brand),rgba(55,214,192,.18));
  box-shadow:0 0 22px rgba(55,214,192,.28);
}
.brand-mark::before{
  content:"";position:absolute;left:50%;top:6px;bottom:6px;width:1px;
  transform:translateX(-50%);
  background:rgba(5,10,18,.8);
}
.brand-mark::after{
  content:"";position:absolute;left:7px;top:50%;width:16px;height:1px;
  transform:translateY(-50%);
  background:rgba(5,10,18,.55);
}
.brand-text{
  font-size:15px;font-weight:700;letter-spacing:.01em;color:var(--text);
  line-height:1.35;
}
.brand-link:hover .brand-text{color:var(--brand);}

/* ---------- 侧栏导航项 ---------- */
.nav-list{display:flex;flex-direction:column;gap:2px;}
.nav-label{
  font-size:12px;font-weight:600;letter-spacing:.12em;
  color:var(--text-3);text-transform:uppercase;
  margin:0 0 8px 12px;
}
.nav-item{
  position:relative;
  display:flex;align-items:center;
  min-height:44px;
  padding:0 12px;
  font-size:14.5px;
  color:var(--text-2);
  border-radius:10px;
  transition:color var(--ease),background-color var(--ease);
}
.nav-item::before{
  content:"";position:absolute;left:0;top:50%;
  width:2px;height:0;
  transform:translateY(-50%);
  background:var(--brand);
  border-radius:2px;
  box-shadow:0 0 14px rgba(55,214,192,.75);
  transition:height var(--ease);
}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-item:hover::before{height:16px;}
.nav-item.is-active{color:var(--brand);background:rgba(55,214,192,.09);}
.nav-item.is-active::before{height:22px;}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}
.side-contact{font-size:12.5px;line-height:1.7;color:var(--text-3);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:999px;
  font-size:15px;font-weight:600;
  letter-spacing:.01em;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease);
}
.btn-primary{
  background:linear-gradient(120deg,#4BE3CC,#2AB9A6);
  color:#04140F;
  box-shadow:0 0 26px rgba(55,214,192,.34);
}
.btn-primary:hover{color:#04140F;box-shadow:0 0 34px rgba(55,214,192,.5);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:var(--glass);
  color:var(--brand);
  border:1px solid var(--brand-line);
}
.btn-ghost:hover{background:rgba(55,214,192,.12);color:var(--brand);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{min-height:40px;padding:0 18px;font-size:13.5px;}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand);
  padding:8px 0;min-height:44px;
}
.btn-text .arrow{transition:transform var(--ease);}
.btn-text:hover .arrow{transform:translateX(4px);}

/* ---------- 顶部移动导航 ---------- */
.topbar{
  display:none;
  position:sticky;top:0;z-index:70;
  height:56px;
  padding:0 18px;
  align-items:center;justify-content:space-between;
  background:rgba(6,12,21,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.menu-btn{
  width:44px;height:44px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border-radius:10px;
}
.menu-btn span{display:block;width:20px;height:1.5px;background:var(--text);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0;}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}

.drawer{
  position:fixed;top:0;left:0;bottom:0;
  width:280px;max-width:82vw;
  padding:22px 18px;
  display:flex;flex-direction:column;gap:22px;
  background:linear-gradient(180deg,#0A1421,#060C15);
  border-right:1px solid var(--line);
  transform:translateX(-104%);
  transition:transform 260ms cubic-bezier(.2,.7,.3,1);
  z-index:90;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(2,6,12,.66);
  opacity:0;pointer-events:none;
  transition:opacity var(--ease);
  z-index:80;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;}

/* ---------- 通用板块 ---------- */
.section{
  position:relative;
  padding-left:28px;
  margin-bottom:var(--sec-gap);
}
.section::before{
  content:"";position:absolute;left:0;top:4px;bottom:-8px;width:1px;
  background:linear-gradient(180deg,rgba(55,214,192,.55),rgba(55,214,192,0));
}
.eyebrow{
  display:inline-block;
  font-size:12.5px;font-weight:600;letter-spacing:.12em;
  color:var(--amber);
  margin-bottom:12px;
}
.eyebrow-brand{color:var(--brand);}
.section-title{
  font-size:clamp(24px,2.8vw,34px);
  font-weight:700;line-height:1.28;
  letter-spacing:-.005em;
}
.section-sub{
  margin-top:14px;
  font-size:15px;line-height:1.8;
  color:var(--text-2);
  max-width:660px;
}
.section-head{margin-bottom:34px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:72px 0 54px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,rgba(55,214,192,.6),rgba(55,214,192,0) 65%);
}
.hero-grid{align-items:center;}
.hero-copy{padding-right:8px;}
.hero-title{
  font-size:clamp(30px,4.2vw,52px);
  font-weight:800;line-height:1.16;letter-spacing:-.01em;
  margin-bottom:20px;
}
.hero-title em{
  font-style:normal;
  background:linear-gradient(100deg,#6FE9D8,#37D6C0 55%,#9DE7DC);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;
}
.hero-sub{
  font-size:16.5px;line-height:1.85;color:var(--text-2);
  max-width:560px;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:32px;}
.pill-strip{display:flex;flex-wrap:wrap;gap:12px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;
  font-size:13.5px;color:var(--text-2);
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:999px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.pill b{color:var(--brand);font-weight:600;}
.hero-media{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--line-soft);
  box-shadow:var(--shadow);
}
.hero-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/5;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,18,.12),rgba(5,10,18,.78));
}
.hero-media-cap{
  position:absolute;left:18px;right:18px;bottom:16px;z-index:2;
  font-size:13px;color:var(--text-2);line-height:1.7;
}
.hero-media-cap strong{display:block;color:var(--text);font-size:14.5px;font-weight:600;margin-bottom:2px;}

/* ---------- 品牌主张 ---------- */
.claim-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.claim-list{display:flex;flex-direction:column;gap:0;}
.claim-item{
  display:grid;grid-template-columns:52px 1fr;gap:18px;
  padding:24px 0;
  border-top:1px solid var(--line);
}
.claim-item:last-child{border-bottom:1px solid var(--line);}
.claim-num{
  font-size:15px;font-weight:700;letter-spacing:.06em;
  color:var(--amber);
  padding-top:2px;
}
.claim-item h3{font-size:20px;font-weight:600;line-height:1.4;margin-bottom:6px;}
.claim-item p{font-size:14.8px;line-height:1.8;color:var(--text-2);}
.claim-media{
  border-radius:var(--r-img);overflow:hidden;
  border:1px solid var(--line-soft);
  box-shadow:var(--shadow);
}
.claim-media img{width:100%;aspect-ratio:5/6;object-fit:cover;}

/* ---------- 理念 / 时间线 ---------- */
.story-grid{display:grid;grid-template-columns:300px 1fr;gap:48px;align-items:start;}
.story-side{
  padding:24px;
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.story-side h3{font-size:17px;font-weight:600;margin-bottom:10px;}
.story-side p{font-size:14px;line-height:1.8;color:var(--text-2);}
.story-side img{
  margin-top:18px;border-radius:12px;
  border:1px solid var(--line-soft);
  aspect-ratio:4/3;object-fit:cover;width:100%;
}
.story-body p{font-size:16px;line-height:1.9;color:var(--text-2);margin-bottom:16px;}
.timeline{position:relative;margin-top:26px;padding-left:26px;}
.timeline::before{
  content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,rgba(55,214,192,.7),rgba(55,214,192,.12));
}
.timeline-item{position:relative;padding:0 0 22px 0;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-item::before{
  content:"";position:absolute;left:-25px;top:9px;
  width:9px;height:9px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 14px rgba(55,214,192,.6);
}
.timeline-item h4{font-size:15.5px;font-weight:600;margin-bottom:4px;}
.timeline-item p{font-size:14.2px;line-height:1.75;color:var(--text-2);}

/* ---------- 精选内容卡 ---------- */
.feat-grid{align-items:stretch;}
.feat-lg{
  display:flex;flex-direction:column;
  height:100%;
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.feat-lg:hover{transform:translateY(-4px);border-color:var(--brand-line);box-shadow:var(--shadow-hover);}
.feat-lg figure{overflow:hidden;margin:0;}
.feat-lg img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 420ms ease;}
.feat-lg:hover img{transform:scale(1.04);}
.feat-lg .feat-body{padding:24px 26px 26px;}
.feat-lg h3{font-size:22px;font-weight:600;line-height:1.4;margin:12px 0 10px;}
.feat-lg p{font-size:14.6px;line-height:1.8;color:var(--text-2);}
.feat-sm-list{display:flex;flex-direction:column;gap:16px;height:100%;}
.feat-sm{
  display:grid;grid-template-columns:104px 1fr;gap:16px;
  padding:14px;
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card);
  transition:transform var(--ease),border-color var(--ease);
}
.feat-sm:hover{transform:translateY(-3px);border-color:var(--brand-line);}
.feat-sm figure{overflow:hidden;border-radius:12px;margin:0;}
.feat-sm img{width:100%;height:100%;min-height:84px;object-fit:cover;transition:transform 420ms ease;}
.feat-sm:hover img{transform:scale(1.05);}
.feat-sm h3{font-size:16.5px;font-weight:600;line-height:1.45;margin:8px 0 6px;color:var(--text);}
.feat-sm p{font-size:13.6px;line-height:1.7;color:var(--text-2);}

.badge{
  display:inline-flex;align-items:center;
  padding:3px 10px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  border-radius:var(--r-badge);
}
.badge-amber{background:var(--amber-soft);color:var(--amber);}
.badge-brand{background:var(--brand-soft);color:var(--brand);}

/* ---------- 最新信息 CMS 列表 ---------- */
.news-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;}
.news-list{
  display:flex;flex-direction:column;
  border-top:1px solid var(--line);
}
.news-row{
  display:grid;
  grid-template-columns:96px 1fr 120px 24px;
  align-items:center;
  gap:20px;
  padding:20px 6px;
  border-bottom:1px solid var(--line);
  transition:background-color var(--ease),padding-left var(--ease);
}
.news-row:hover{background:rgba(255,255,255,.03);padding-left:12px;}
.news-main{min-width:0;}
.news-title{
  display:block;
  font-size:16.5px;font-weight:600;line-height:1.5;color:var(--text);
  margin-bottom:4px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.news-row:hover .news-title{color:var(--brand);}
.news-summary{
  font-size:13.8px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
  overflow:hidden;
}
.news-date{font-size:13px;color:var(--text-3);text-align:right;font-variant-numeric:tabular-nums;}
.news-arrow{font-size:16px;color:var(--text-3);transition:transform var(--ease),color var(--ease);}
.news-row:hover .news-arrow{transform:translateX(4px);color:var(--brand);}
.news-empty{
  padding:44px 26px;
  text-align:center;
  background:var(--glass);
  border:1px dashed var(--line);
  border-radius:var(--r-card);
}
.news-empty .empty-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:50%;
  border:1px solid var(--brand-line);color:var(--brand);
  font-size:18px;margin-bottom:12px;
}
.news-empty p{font-size:14.5px;color:var(--text-2);margin-bottom:14px;}
.news-foot{margin-top:24px;}

/* ---------- 信任背书 ---------- */
.trust{
  position:relative;
  padding:56px 40px;
  border-radius:22px;
  border:1px solid var(--line-soft);
  overflow:hidden;
  background-image:linear-gradient(120deg,rgba(5,10,18,.86),rgba(5,10,18,.94)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.trust-head{max-width:620px;margin-bottom:34px;}
.trust-head h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.32;}
.trust-head p{font-size:14.5px;color:var(--text-2);margin-top:10px;line-height:1.8;}
.stats-grid{row-gap:18px;}
.stat-card{
  padding:22px 20px;
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  height:100%;
}
.stat-num{
  font-size:clamp(26px,3vw,34px);font-weight:800;line-height:1.1;
  color:var(--brand);letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
}
.stat-num span{font-size:14px;font-weight:600;margin-left:4px;color:var(--text-2);}
.stat-card p{font-size:13.5px;line-height:1.7;color:var(--text-2);margin-top:8px;}
.trust-note{
  margin-top:26px;padding-top:18px;
  border-top:1px solid var(--line);
  font-size:13.5px;color:var(--text-3);line-height:1.8;
}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:840px;}
.faq-item{
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color var(--ease);
}
.faq-item[open]{border-color:var(--brand-line);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  font-size:16.5px;font-weight:600;line-height:1.5;
  color:var(--text);
  cursor:pointer;
  list-style:none;
  position:relative;
  transition:color var(--ease);
}
.faq-q::-webkit-details-marker{display:none;}
.faq-q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleY(0);transform-origin:top;
  transition:transform var(--ease);
}
.faq-item[open] .faq-q::before{transform:scaleY(1);}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  position:relative;flex:none;
  width:20px;height:20px;border-radius:50%;
  border:1px solid var(--line);
  transition:transform var(--ease),border-color var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--text-2);border-radius:1px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:9px;height:1.5px;}
.faq-icon::after{width:1.5px;height:9px;transition:opacity var(--ease);}
.faq-item[open] .faq-icon{border-color:var(--brand-line);transform:rotate(180deg);}
.faq-item[open] .faq-icon::after{opacity:0;}
.faq-item[open] .faq-icon::before{background:var(--brand);}
.faq-a{padding:0 22px 20px 22px;}
.faq-a p{font-size:15px;line-height:1.8;color:var(--text-2);}

/* ---------- 订阅 CTA ---------- */
.subscribe{
  max-width:760px;
  margin:0 auto;
  padding:46px 40px;
  text-align:center;
  background:var(--glass);
  border:1px solid var(--line-soft);
  border-radius:22px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.subscribe h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;line-height:1.32;}
.subscribe p{font-size:14.8px;line-height:1.8;color:var(--text-2);margin-top:12px;}
.subscribe-form{
  display:flex;gap:12px;margin-top:26px;
  align-items:stretch;
}
.field-wrap{flex:1;min-width:0;}
.subscribe-form input[type="email"]{
  width:100%;height:48px;
  padding:0 16px;
  color:var(--text);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:var(--r-input);
  transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);
}
.subscribe-form input[type="email"]::placeholder{color:var(--text-3);}
.subscribe-form input[type="email"]:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(55,214,192,.18);
  background:rgba(255,255,255,.07);
}
.subscribe-form .btn{height:48px;min-height:48px;padding:0 26px;}
.form-hint{font-size:12.6px;color:var(--text-3);margin-top:14px;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--sec-gap);
  padding:56px 0 30px;
  background:#03070D;
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:36px;
}
.footer-brand p{font-size:13.8px;line-height:1.8;color:var(--text-3);margin-top:14px;max-width:280px;}
.footer-col h4{
  font-size:13px;font-weight:600;letter-spacing:.1em;
  color:var(--text-2);margin-bottom:14px;
}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px;}
.footer-col a{font-size:13.8px;color:var(--text-3);}
.footer-col a:hover{color:var(--brand);}
.footer-col p{font-size:13.8px;color:var(--text-3);line-height:1.8;}
.footer-bottom{
  margin-top:40px;padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:12.8px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  :root{--nav-w:200px;}
  .container{padding:0 28px;}
  .claim-wrap{gap:32px;}
  .story-grid{grid-template-columns:260px 1fr;gap:32px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
}

@media screen and (max-width:1023px){
  .side-nav{display:none;}
  .stage{margin-left:0;}
  .topbar{display:flex;}
  .container{padding:0 22px;}
  :root{--sec-gap:64px;}
  .hero{padding:44px 0 40px;}
  .hero-copy{padding-right:0;margin-bottom:28px;}
  .hero-media img{aspect-ratio:16/10;}
  .claim-wrap{grid-template-columns:1fr;gap:28px;}
  .claim-media img{aspect-ratio:16/10;}
  .story-grid{grid-template-columns:1fr;gap:24px;}
  .feat-sm-list{margin-top:16px;}
  .news-row{grid-template-columns:84px 1fr 20px;gap:14px;}
  .news-date{display:none;}
  .trust{padding:38px 24px;border-radius:18px;}
  .subscribe{padding:34px 22px;border-radius:18px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .section{padding-left:18px;}
}

@media screen and (max-width:767px){
  body{font-size:15.5px;}
  :root{--sec-gap:48px;}
  .section{padding-left:16px;}
  .hero-title{font-size:clamp(26px,7.2vw,36px);}
  .hero-sub{font-size:15.5px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{flex:1 1 auto;}
  .pill{font-size:12.8px;padding:8px 14px;}
  .feat-lg h3{font-size:19px;}
  .feat-sm{grid-template-columns:88px 1fr;gap:14px;}
  .news-row{grid-template-columns:1fr 18px;gap:12px;padding:16px 4px;}
  .news-row .badge{grid-column:1 / -1;justify-self:start;margin-bottom:2px;}
  .news-title{white-space:normal;}
  .stats-grid{row-gap:12px;}
  .faq-q{font-size:15.5px;padding:16px 18px;}
  .faq-a{padding:0 18px 18px;}
  .subscribe-form{flex-direction:column;}
  .subscribe-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;}
}

@media screen and (max-width:480px){
  .container{padding:0 16px;}
  .hero{padding:32px 0 32px;}
  .btn{width:100%;}
  .hero-actions .btn-text{width:auto;}
  .stat-card{padding:18px 16px;}
}

/* roulang page: article */
:root{
  --bg:#050A12;
  --bg-2:#0A1421;
  --bg-3:#04080F;
  --brand:#37D6C0;
  --brand-soft:rgba(55,214,192,.12);
  --brand-line:rgba(55,214,192,.35);
  --amber:#E9A15C;
  --amber-soft:rgba(233,161,92,.12);
  --text:#E8F0F7;
  --text-2:#93A6BA;
  --text-3:#6B7E92;
  --line:rgba(120,180,200,.16);
  --line-strong:rgba(120,180,200,.3);
  --glass:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.032));
  --radius-card:16px;
  --radius-img:18px;
  --radius-badge:6px;
  --radius-input:10px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,.75);
  --shadow-hover:0 26px 52px -22px rgba(0,0,0,.88);
  --nav-w:232px;
  --maxw:1240px;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-style:none;}
p{margin:0 0 1em;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,border-color .2s ease,background .2s ease;}
a:hover{color:#7FF0E0;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{font-family:var(--font);color:var(--text);margin:0;}
button{font-family:var(--font);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:3px;
  border-radius:6px;
}
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 40px;
}

/* ---------- 移动端顶部条 ---------- */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:56px;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:0 16px;
  background:rgba(5,10,18,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  z-index:80;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  padding:0;
}
.brand:hover{color:var(--text);}
.brand-mark{
  position:relative;
  flex:none;
  width:26px;height:26px;
  border-radius:8px;
  background:linear-gradient(150deg,#4BE6CF,#17998D);
  box-shadow:0 0 18px rgba(55,214,192,.35);
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:7px;
  border-radius:3px;
  border:1.5px solid rgba(5,10,18,.72);
}
.brand-text{
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.3;
}
.brand-sm .brand-text{font-size:14px;}
.brand-sm .brand-mark{width:23px;height:23px;border-radius:7px;}
.brand-sm .brand-mark::after{inset:6px;}

.nav-toggle{
  width:44px;height:44px;
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  padding:0;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:10px;
  cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.nav-toggle span{
  display:block;
  width:18px;height:1.5px;
  border-radius:2px;
  background:var(--text-2);
  transition:background .2s ease;
}
.nav-toggle:hover{border-color:var(--brand-line);background:rgba(55,214,192,.08);}
.nav-toggle:hover span{background:var(--brand);}

/* ---------- 左侧竖向导航 ---------- */
.site-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:26px 18px 22px;
  background:linear-gradient(180deg,rgba(10,20,33,.97),rgba(5,10,18,.99));
  border-right:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  overflow-y:auto;
  z-index:90;
  transition:transform .28s ease;
}
.site-nav .brand{padding:4px 8px 20px;}
.nav-label{
  margin:6px 10px 10px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--text-3);
}
.nav-list{display:flex;flex-direction:column;gap:2px;}
.nav-item{
  position:relative;
  display:block;
  padding:0 12px;
  line-height:44px;
  font-size:14.5px;
  color:var(--text-2);
  border-radius:10px;
  transition:color .2s ease,background .2s ease;
}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,.045);}
.nav-item.is-active{color:var(--text);background:rgba(55,214,192,.08);}
.nav-item:hover::before,
.nav-item.is-active::before{
  content:"";
  position:absolute;
  left:0;top:10px;bottom:10px;
  width:2px;
  border-radius:2px;
  background:var(--brand);
  box-shadow:0 0 12px rgba(55,214,192,.8);
}
.nav-foot{
  margin-top:auto;
  padding-top:22px;
  display:grid;
  gap:10px;
}
.nav-contact{
  margin:0;
  font-size:12.5px;
  line-height:1.7;
  color:var(--text-3);
  padding:0 4px;
}
.nav-scrim{
  position:fixed;
  inset:0;
  background:rgba(2,6,11,.6);
  backdrop-filter:blur(2px);
  -webkit-backdrop-filter:blur(2px);
  opacity:0;
  pointer-events:none;
  transition:opacity .28s ease;
  z-index:85;
}
.nav-scrim.is-on{opacity:1;pointer-events:auto;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:999px;
  font-size:14.5px;
  font-weight:600;
  letter-spacing:.01em;
  cursor:pointer;
  border:1px solid transparent;
  background:none;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,#45E2CB,#1FB4A3);
  color:#04120F;
  box-shadow:0 12px 30px -12px rgba(55,214,192,.6);
}
.btn-primary:hover{color:#04120F;transform:translateY(-2px);box-shadow:0 18px 38px -14px rgba(55,214,192,.78);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:var(--brand-line);
  color:var(--brand);
}
.btn-ghost:hover{background:rgba(55,214,192,.1);border-color:rgba(55,214,192,.7);color:#7FF0E0;}
.btn-sm{min-height:40px;padding:0 18px;font-size:13.5px;}
.btn-link{
  min-height:auto;
  padding:0;
  color:var(--brand);
  font-weight:600;
  border:0;
  background:none;
}
.btn-link .arrow{transition:transform .2s ease;}
.btn-link:hover .arrow{transform:translateX(4px);}

/* ---------- 页面主体 ---------- */
.page-main{
  margin-left:var(--nav-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
main{flex:1 1 auto;}

/* ---------- 文章头部 ---------- */
.article-head{
  position:relative;
  padding:56px 0 40px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(5,10,18,.78),rgba(5,10,18,.97)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  font-size:13px;
  color:var(--text-3);
}
.crumbs a{color:var(--text-2);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:var(--line-strong);}
.crumbs .current{color:var(--text-2);}
.article-title{
  font-size:clamp(28px,3.6vw,44px);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.01em;
  max-width:900px;
  margin:0 0 20px;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  font-size:13.5px;
  color:var(--text-3);
}
.article-meta .divider{
  width:1px;height:12px;
  background:var(--line);
  display:inline-block;
}
.badge{
  display:inline-block;
  padding:3px 10px;
  border-radius:var(--radius-badge);
  font-size:12.5px;
  font-weight:500;
  letter-spacing:.04em;
  background:var(--amber-soft);
  color:var(--amber);
  border:1px solid rgba(233,161,92,.26);
}
.badge-cyan{
  background:var(--brand-soft);
  color:var(--brand);
  border-color:rgba(55,214,192,.28);
}

/* ---------- 文章布局 ---------- */
.article-wrap{padding:52px 0 0;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 280px;
  gap:56px;
  align-items:start;
}
.article-main{min-width:0;}
.article-body{
  max-width:760px;
  font-size:17px;
  line-height:1.95;
  color:#D6E3EE;
}
.article-body>*:first-child{margin-top:0;}
.article-body p{margin:0 0 1.1em;}
.article-body h2{
  font-size:23px;
  line-height:1.5;
  font-weight:700;
  margin:44px 0 16px;
  color:var(--text);
}
.article-body h3{
  font-size:19px;
  line-height:1.55;
  font-weight:600;
  margin:32px 0 12px;
  color:var(--text);
}
.article-body h4{
  font-size:17px;
  font-weight:600;
  margin:24px 0 10px;
  color:var(--text);
}
.article-body a{
  color:var(--brand);
  border-bottom:1px solid rgba(55,214,192,.45);
}
.article-body a:hover{border-bottom-color:var(--brand);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.25em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin-bottom:.55em;line-height:1.9;}
.article-body li::marker{color:var(--brand);}
.article-body blockquote{
  margin:28px 0;
  padding:6px 0 6px 20px;
  border-left:3px solid var(--brand);
  color:var(--text-2);
  font-style:normal;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  border-radius:var(--radius-img);
  border:1px solid rgba(255,255,255,.08);
  margin:28px 0 10px;
  width:100%;
}
.article-body figcaption,
.article-body .caption{
  font-size:13px;
  color:var(--text-3);
  margin-bottom:24px;
}
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:24px 0;
  font-size:15px;
}
.article-body th,
.article-body td{
  border:1px solid var(--line);
  padding:10px 12px;
  text-align:left;
  line-height:1.7;
}
.article-body th{color:var(--text);font-weight:600;background:rgba(255,255,255,.03);}
.article-body code{
  background:rgba(255,255,255,.08);
  border-radius:4px;
  padding:1px 6px;
  font-size:.92em;
  color:#BFEDE4;
}
.article-body pre{
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:12px;
  padding:16px 18px;
  overflow:auto;
  margin:24px 0;
}
.article-body pre code{background:none;padding:0;}
.article-body hr{
  border:0;
  border-top:1px solid var(--line);
  margin:36px 0;
}

.article-empty{
  max-width:760px;
  padding:44px 32px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  text-align:center;
}
.article-empty p{
  font-size:17px;
  color:var(--text-2);
  margin:0 0 18px;
}

/* ---------- 文末操作 ---------- */
.article-foot{
  max-width:760px;
  margin-top:44px;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:22px;
}
.tag{
  display:inline-block;
  padding:5px 13px;
  border-radius:999px;
  font-size:13px;
  color:var(--text-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.tag:hover{color:var(--brand);border-color:var(--brand-line);background:rgba(55,214,192,.08);}
.article-actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
}
.copy-tip{
  font-size:13px;
  color:var(--brand);
  opacity:0;
  transition:opacity .25s ease;
}
.copy-tip.is-on{opacity:1;}

/* ---------- 侧栏 ---------- */
.article-aside{
  position:sticky;
  top:32px;
  display:grid;
  gap:18px;
}
.aside-card{
  padding:22px;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.aside-card h3{
  font-size:15px;
  font-weight:600;
  margin:0 0 14px;
  padding-left:12px;
  position:relative;
}
.aside-card h3::before{
  content:"";
  position:absolute;
  left:0;top:3px;bottom:3px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--brand),rgba(55,214,192,0));
}
.aside-list{display:grid;gap:4px;}
.aside-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:9px 10px;
  border-radius:10px;
  font-size:14px;
  color:var(--text-2);
  transition:color .2s ease,background .2s ease;
}
.aside-list a:hover{color:var(--text);background:rgba(255,255,255,.05);}
.aside-list .arrow{color:var(--brand);font-size:13px;}
.aside-note{
  font-size:13.5px;
  line-height:1.8;
  color:var(--text-3);
  margin:0;
}

/* ---------- 相关推荐 ---------- */
.related{padding:76px 0 0;}
.section-head{
  position:relative;
  padding-left:22px;
  margin-bottom:28px;
}
.section-head::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:1px;
  background:linear-gradient(180deg,var(--brand),rgba(55,214,192,0));
}
.eyebrow{
  display:block;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--amber);
  margin-bottom:8px;
}
.section-title{
  font-size:clamp(22px,2.4vw,30px);
  font-weight:700;
  line-height:1.3;
  margin:0;
}
.section-desc{
  margin:12px 0 0;
  font-size:15px;
  color:var(--text-2);
  max-width:640px;
}
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:20px;
}
.post-card{
  display:flex;
  flex-direction:column;
  border-radius:var(--radius-card);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.post-card:hover{
  transform:translateY(-4px);
  border-color:var(--brand-line);
  box-shadow:var(--shadow-hover);
}
.post-thumb{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.post-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.post-body .badge{align-self:flex-start;}
.post-title{
  font-size:18px;
  font-weight:600;
  line-height:1.45;
  color:var(--text);
  margin:0;
}
.post-card:hover .post-title{color:var(--brand);}
.post-desc{
  font-size:14px;
  line-height:1.75;
  color:var(--text-3);
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-more{
  margin-top:auto;
  padding-top:6px;
  font-size:13.5px;
  font-weight:600;
  color:var(--brand);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.post-card:hover .post-more .arrow{transform:translateX(4px);}
.post-more .arrow{transition:transform .2s ease;}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:76px;
  padding:36px 36px;
  border-radius:20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  background:linear-gradient(120deg,rgba(55,214,192,.13),rgba(233,161,92,.07));
  border:1px solid var(--line-strong);
}
.cta-band h2{
  font-size:clamp(20px,2.2vw,26px);
  font-weight:700;
  line-height:1.35;
  margin:0 0 10px;
}
.cta-band p{
  margin:0;
  font-size:14.5px;
  color:var(--text-2);
  max-width:560px;
}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:none;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;
  padding:56px 0 26px;
  background:var(--bg-3);
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:34px;
}
.footer-brand .brand{padding:0;margin-bottom:14px;}
.footer-brand p{
  margin:0;
  font-size:13.5px;
  line-height:1.85;
  color:var(--text-3);
  max-width:320px;
}
.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--text);
  margin:0 0 14px;
  letter-spacing:.02em;
}
.footer-col ul{display:grid;gap:9px;}
.footer-col a{
  font-size:14px;
  color:var(--text-2);
}
.footer-col a:hover{color:var(--brand);}
.footer-col p{
  margin:0;
  font-size:13.5px;
  line-height:1.9;
  color:var(--text-3);
}
.footer-bottom{
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:0;}
  .article-aside{display:none;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;}
}
@media screen and (max-width:1023px){
  .mobile-bar{display:flex;}
  .site-nav{
    width:272px;
    transform:translateX(-100%);
    box-shadow:0 0 60px rgba(0,0,0,.7);
  }
  .site-nav.is-open{transform:translateX(0);}
  .page-main{margin-left:0;padding-top:56px;}
  .container{padding:0 28px;}
  .article-head{padding:40px 0 32px;}
  .article-wrap{padding:40px 0 0;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 26px;}
  .cta-actions{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .related{padding:56px 0 0;}
  .cta-band{margin-top:56px;}
  .site-footer{margin-top:64px;padding-top:44px;}
}
@media screen and (max-width:767px){
  .container{padding:0 20px;}
  .article-title{font-size:clamp(24px,6.4vw,32px);}
  .article-body{font-size:16.5px;line-height:1.9;}
  .article-body h2{font-size:21px;margin-top:34px;}
  .article-body h3{font-size:18px;margin-top:26px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .article-meta{gap:10px;font-size:13px;}
  .article-meta .divider{height:10px;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .btn{width:100%;}
  .article-actions .btn{width:auto;}
  .cta-actions .btn{width:100%;}
  .section-head{margin-bottom:22px;}
}
@media screen and (max-width:480px){
  .article-head{padding:32px 0 26px;}
  .article-head .article-meta{flex-direction:row;}
  .post-body{padding:18px 18px 20px;}
  .aside-card{padding:18px;}
  .tag{font-size:12.5px;}
}

/* roulang page: category1 */
:root{
  --bg:#050A12;
  --surface:#0A1421;
  --surface-2:#0E1B2B;
  --brand:#37D6C0;
  --brand-deep:#24B9A4;
  --brand-soft:rgba(55,214,192,.10);
  --amber:#E9A15C;
  --amber-soft:rgba(233,161,92,.12);
  --text:#E8F0F7;
  --text-2:#93A6BA;
  --text-3:#6B7E92;
  --line:rgba(120,180,200,.16);
  --line-soft:rgba(255,255,255,.08);
  --r-btn:999px;
  --r-card:16px;
  --r-img:18px;
  --r-badge:6px;
  --r-input:10px;
  --shadow:0 18px 40px -18px rgba(0,0,0,.75);
  --shadow-hover:0 24px 52px -20px rgba(0,0,0,.85);
  --sidebar:232px;
  --pad:40px;
  --maxw:1240px;
  --gap-section:96px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Inter",system-ui,-apple-system,"Segoe UI",Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;border-style:none}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:#63e8d6}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.01em;font-weight:700}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.16;font-weight:800}
h2{font-size:clamp(24px,2.8vw,34px);line-height:1.28}
h3{font-size:20px;line-height:1.4;font-weight:600}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

/* 布局骨架 */
.layout-shell{display:flex;min-height:100vh;align-items:stretch}
.main-wrap{
  margin-left:var(--sidebar);
  flex:1 1 auto;
  min-width:0;
  display:flex;
  flex-direction:column;
}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.page{position:relative;flex:1 1 auto}
.page::before{
  content:"";
  position:absolute;left:20px;top:0;bottom:0;width:1px;
  background:linear-gradient(180deg,rgba(55,214,192,0),rgba(55,214,192,.40) 8%,rgba(55,214,192,.12) 55%,rgba(55,214,192,0));
  pointer-events:none;
}

/* 左侧竖向导航 */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--sidebar);
  display:flex;flex-direction:column;gap:18px;
  padding:22px 16px 18px;
  background:linear-gradient(180deg,rgba(10,20,33,.97),rgba(5,10,18,.99));
  border-right:1px solid var(--line);
  backdrop-filter:blur(14px);
  overflow-y:auto;
  z-index:60;
}
.brand-link{display:flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;padding:4px 6px}
.brand-link:hover{color:var(--text)}
.brand-mark{
  position:relative;flex:0 0 auto;width:32px;height:32px;border-radius:9px;
  background:linear-gradient(160deg,rgba(55,214,192,.95),rgba(55,214,192,.16));
  box-shadow:0 0 22px rgba(55,214,192,.32);
}
.brand-mark::before{
  content:"";position:absolute;left:50%;top:5px;bottom:5px;width:1.5px;
  transform:translateX(-50%);
  background:linear-gradient(180deg,rgba(255,255,255,.95),rgba(55,214,192,0));
}
.brand-mark::after{
  content:"";position:absolute;left:8px;right:8px;top:16px;height:1px;
  background:rgba(4,18,26,.55);
}
.brand-text{font-size:15px;font-weight:700;line-height:1.34;letter-spacing:.02em}
.nav-label{
  margin:6px 0 0;padding-left:12px;
  font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--amber);
  text-transform:none;
}
.nav-list{display:flex;flex-direction:column;gap:4px}
.nav-item{
  position:relative;display:block;
  padding:11px 12px 11px 16px;
  border-radius:10px;
  color:var(--text-2);
  font-size:14.5px;
  line-height:1.5;
  min-height:44px;
  display:flex;align-items:center;
  transition:color .2s ease,background .2s ease;
}
.nav-item::before{
  content:"";position:absolute;left:0;top:50%;
  width:2px;height:22px;border-radius:2px;
  transform:translateY(-50%) scaleY(.2);
  background:var(--brand);
  box-shadow:0 0 12px rgba(55,214,192,.75);
  opacity:0;
  transition:opacity .22s ease,transform .22s ease;
}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,.045)}
.nav-item:hover::before{opacity:1;transform:translateY(-50%) scaleY(1)}
.nav-item.is-active{color:var(--text);background:var(--brand-soft)}
.nav-item.is-active::before{opacity:1;transform:translateY(-50%) scaleY(1)}
.nav-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding:16px 6px 4px;border-top:1px solid var(--line)}
.nav-foot .btn{width:100%}
.nav-contact{font-size:12.5px;line-height:1.75;color:var(--text-3);margin:0}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 26px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;
  text-decoration:none;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{
  background:linear-gradient(135deg,#4EE3CD,#24B9A4);
  color:#04121A;
  box-shadow:0 0 24px rgba(55,214,192,.35);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(55,214,192,.52);color:#04121A}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:rgba(55,214,192,.45);
  color:var(--brand);
}
.btn-ghost:hover{background:rgba(55,214,192,.10);color:var(--brand);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  min-height:44px;
  color:var(--brand);font-weight:600;font-size:15px;
  text-decoration:none;
}
.btn-text .arrow{display:inline-block;transition:transform .2s ease}
.btn-text:hover .arrow{transform:translateX(4px)}

/* 移动端顶栏 */
.mobile-bar{display:none}
.menu-btn{
  width:44px;height:44px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:10px;
  cursor:pointer;
}
.menu-btn span{display:block;width:18px;height:1.5px;background:var(--text);border-radius:2px}
.sidebar-backdrop{
  position:fixed;inset:0;z-index:75;
  background:rgba(3,7,12,.62);
  opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
}
.sidebar-backdrop.is-open{opacity:1;visibility:visible}

/* 首屏 */
.page-hero{position:relative;padding:44px 0 72px;border-bottom:1px solid var(--line)}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,rgba(55,214,192,.55),rgba(55,214,192,0) 62%);
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--text-3);margin-bottom:16px}
.crumbs a{color:var(--text-2);text-decoration:none}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:rgba(120,180,200,.4)}
.crumbs .current{color:var(--text-3)}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;
  font-size:12.5px;font-weight:600;letter-spacing:.14em;
  color:var(--amber);margin-bottom:16px;
}
.eyebrow::before{
  content:"";display:inline-block;width:1px;height:14px;
  margin-right:10px;
  background:var(--brand);
  box-shadow:0 0 8px rgba(55,214,192,.85);
}
.hero-copy h1{margin-bottom:20px}
.lead{font-size:17px;line-height:1.9;color:var(--text-2);max-width:640px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 28px}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;
  font-size:12.5px;line-height:1.6;
  border-radius:var(--r-badge);
  background:var(--amber-soft);
  border:1px solid rgba(233,161,92,.26);
  color:var(--amber);
}
.tag.is-brand{background:var(--brand-soft);border-color:rgba(55,214,192,.3);color:var(--brand)}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px}
.media-frame{
  position:relative;overflow:hidden;
  border-radius:var(--r-img);
  border:1px solid var(--line-soft);
  box-shadow:var(--shadow);
  background:var(--surface-2);
}
.media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .55s ease}
.media-frame:hover img{transform:scale(1.04)}
.media-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,18,.12),rgba(5,10,18,.42));
  pointer-events:none;
}
.hero-media{aspect-ratio:4/5}

/* 通用板块 */
.section{padding:var(--gap-section) 0}
.section:last-of-type{padding-bottom:calc(var(--gap-section) - 20px)}
.section-head{margin-bottom:44px;max-width:760px}
.section-head h2{margin-bottom:16px}
.section-head p{color:var(--text-2);font-size:16px;line-height:1.9;margin:0}
.section-head .eyebrow{margin-bottom:14px}

/* 图文交错 */
.zebra-row{display:flex;flex-wrap:wrap;align-items:center;gap:56px;margin:0}
.zebra-row > .cell{
  flex:1 1 44%;
  width:auto;max-width:none;
  padding:0;
  min-width:0;
}
.zebra-row + .zebra-row{margin-top:88px}
.zebra-row.is-reverse .zebra-media{order:-1}
.zebra-media .media-frame{aspect-ratio:4/3}
.zebra-text .eyebrow{margin-bottom:12px}
.zebra-text h3{font-size:clamp(20px,2vw,24px);margin-bottom:16px;line-height:1.42}
.zebra-text p{color:var(--text-2);font-size:15.5px;line-height:1.9}
.point-list{display:grid;gap:12px;margin:22px 0 0}
.point-list li{
  position:relative;
  padding-left:26px;
  font-size:15px;line-height:1.78;color:var(--text-2);
}
.point-list li::before{
  content:"";position:absolute;left:0;top:8px;
  width:8px;height:8px;border-radius:2px;
  background:rgba(55,214,192,.9);
  box-shadow:0 0 10px rgba(55,214,192,.5);
}
.point-list li strong{color:var(--text);font-weight:600}

/* 数据卡 */
.metrics{margin-top:88px}
.metrics-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.metric-card{
  position:relative;
  padding:28px 26px;
  border-radius:var(--r-card);
  background:linear-gradient(160deg,rgba(255,255,255,.065),rgba(255,255,255,.018));
  border:1px solid var(--line-soft);
  box-shadow:var(--shadow);
  backdrop-filter:blur(12px);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.metric-card::before{
  content:"";position:absolute;top:0;left:14px;right:14px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.34),transparent);
}
.metric-card:hover{transform:translateY(-4px);border-color:rgba(55,214,192,.5);box-shadow:var(--shadow-hover)}
.metric-num{
  display:block;
  font-size:38px;font-weight:800;line-height:1.08;letter-spacing:-.02em;
  color:var(--brand);
  font-family:"Inter",system-ui,sans-serif;
}
.metric-num small{font-size:14px;font-weight:500;color:var(--text-2);margin-left:5px;letter-spacing:0}
.metric-card p{margin:10px 0 0;font-size:14.5px;line-height:1.75;color:var(--text-2)}

/* 步骤速览 */
.step-list{display:grid;gap:14px}
.step-item{
  display:flex;align-items:flex-start;gap:18px;
  padding:22px 26px;
  border-radius:var(--r-card);
  background:rgba(255,255,255,.035);
  border:1px solid var(--line);
  transition:transform .22s ease,border-color .22s ease,background .22s ease;
}
.step-item:hover{
  transform:translateY(-3px);
  border-color:rgba(55,214,192,.48);
  background:rgba(55,214,192,.06);
}
.step-index{
  flex:0 0 auto;
  width:40px;height:40px;border-radius:10px;
  display:grid;place-items:center;
  font-size:15px;font-weight:700;
  color:var(--amber);
  background:var(--amber-soft);
  border:1px solid rgba(233,161,92,.26);
  font-family:"Inter",system-ui,sans-serif;
}
.step-body h3{font-size:17px;margin-bottom:6px;line-height:1.45}
.step-body p{margin:0;font-size:14.5px;line-height:1.8;color:var(--text-2)}

/* 结尾行动条 */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  padding:36px 40px;
  border-radius:20px;
  border:1px solid rgba(55,214,192,.28);
  background:linear-gradient(118deg,rgba(55,214,192,.11),rgba(10,20,33,.65) 62%);
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:clamp(21px,2.2vw,27px);margin-bottom:10px}
.cta-band p{margin:0;color:var(--text-2);font-size:15px;line-height:1.8;max-width:640px}
.cta-band .btn{flex:0 0 auto}

/* 页脚 */
.site-footer{background:#040810;border-top:1px solid var(--line);padding:64px 0 0;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px}
.footer-brand p{color:var(--text-2);font-size:14px;line-height:1.82;margin:16px 0 0;max-width:330px}
.footer-col h4{font-size:14px;font-weight:600;margin-bottom:14px;letter-spacing:.05em;color:var(--text)}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:var(--text-2);font-size:14px}
.footer-col a:hover{color:var(--brand)}
.footer-col p{color:var(--text-2);font-size:13.5px;line-height:1.9;margin:0}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  color:var(--text-3);font-size:12.5px;
}

/* 断点 */
@media (max-width:1199px){
  :root{--sidebar:200px;--pad:32px}
  .hero-grid{gap:40px}
  .zebra-row{gap:40px}
}
@media (max-width:1023px){
  :root{--gap-section:72px}
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:56px;
    padding:0 16px;
    background:rgba(5,10,18,.94);
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(14px);
    z-index:80;
  }
  .mobile-bar .brand-text{font-size:14px}
  .sidebar{
    width:274px;
    transform:translateX(-100%);
    transition:transform .28s ease;
    z-index:85;
  }
  .sidebar.is-open{transform:translateX(0)}
  .main-wrap{margin-left:0;padding-top:56px}
  .container{padding:0 22px}
  .page::before{display:none}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-media{aspect-ratio:16/10}
  .metrics-grid{grid-template-columns:1fr;gap:14px}
  .metrics{margin-top:64px}
  .zebra-row + .zebra-row{margin-top:56px}
  .zebra-row > .cell{flex:1 1 100%}
  .zebra-row.is-reverse .zebra-media{order:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:767px){
  :root{--gap-section:56px}
  body{font-size:15.5px}
  .page-hero{padding:30px 0 48px}
  .lead{font-size:15.5px}
  .tag-row{margin:18px 0 24px}
  .hero-actions{gap:12px}
  .btn{width:100%}
  .btn-text{width:auto}
  .section-head{margin-bottom:30px}
  .step-item{padding:18px 18px;gap:14px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px 22px;gap:22px}
  .cta-band .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:480px){
  .container{padding:0 16px}
  .metric-card{padding:22px 20px}
  .metric-num{font-size:32px}
  .hero-media{aspect-ratio:5/4}
}

/* roulang page: category2 */
:root{
  --bg:#050A12;
  --bg-2:#0A1421;
  --bg-3:#071019;
  --cyan:#37D6C0;
  --cyan-deep:#1FA695;
  --amber:#E9A15C;
  --text:#E8F0F7;
  --text-2:#93A6BA;
  --text-3:#6B7E92;
  --line:rgba(120,180,200,0.16);
  --line-soft:rgba(255,255,255,0.08);
  --glass:linear-gradient(160deg,rgba(255,255,255,0.07),rgba(255,255,255,0.03));
  --glass-strong:linear-gradient(160deg,rgba(255,255,255,0.10),rgba(255,255,255,0.04));
  --radius-card:16px;
  --radius-img:18px;
  --radius-badge:6px;
  --radius-input:10px;
  --radius-pill:999px;
  --shadow-card:0 18px 40px -18px rgba(0,0,0,0.75);
  --shadow-hover:0 26px 54px -20px rgba(0,0,0,0.85);
  --gap-xs:8px;
  --gap-sm:14px;
  --gap-md:24px;
  --gap-lg:40px;
  --gap-xl:88px;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  background-image:
    radial-gradient(1100px 560px at 82% -8%,rgba(55,214,192,0.075),transparent 62%),
    radial-gradient(760px 420px at 4% 22%,rgba(233,161,92,0.045),transparent 66%);
  background-repeat:no-repeat;
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--cyan);text-decoration:none;transition:color .2s ease,border-color .2s ease;background:none;}
a:hover{color:#63EDD9;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
h1,h2,h3,h4{margin:0;color:var(--text);font-family:var(--font);letter-spacing:-0.01em;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(55,214,192,0.28);color:#fff;}

/* ---------- 基础容器 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 28px;}
.off-canvas-content{box-shadow:none !important;background:transparent !important;}

/* ---------- 布局骨架 ---------- */
.app-shell{
  display:grid;
  grid-template-columns:232px minmax(0,1fr);
  align-items:start;
  min-height:100vh;
}
.side-rail{
  position:sticky;
  top:0;
  height:100vh;
  display:flex;
  flex-direction:column;
  padding:26px 18px 22px;
  background:linear-gradient(180deg,rgba(10,20,33,0.92),rgba(7,16,25,0.92));
  border-right:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.brand-link{display:flex;align-items:center;gap:11px;color:var(--text);}
.brand-link:hover{color:var(--text);}
.brand-mark{
  width:30px;height:30px;flex:0 0 30px;border-radius:9px;position:relative;
  background:linear-gradient(150deg,rgba(55,214,192,0.95),rgba(55,214,192,0.28));
  box-shadow:0 0 22px rgba(55,214,192,0.35);
}
.brand-mark::before{
  content:"";position:absolute;inset:7px 8px;border-radius:3px;background:var(--bg-2);
}
.brand-mark::after{
  content:"";position:absolute;left:50%;top:9px;bottom:9px;width:1px;
  background:linear-gradient(180deg,var(--cyan),rgba(55,214,192,0));
  transform:translateX(-50%);
}
.brand-text{font-size:15px;font-weight:700;letter-spacing:.01em;line-height:1.35;}
.side-rail .brand-link{margin-bottom:30px;}

.nav-list{display:flex;flex-direction:column;gap:2px;}
.nav-label{
  margin:0 0 10px;padding-left:12px;font-size:11px;font-weight:600;letter-spacing:.16em;
  color:var(--text-3);text-transform:uppercase;
}
.nav-item{
  position:relative;display:block;padding:11px 12px 11px 14px;border-radius:10px;
  font-size:14.5px;color:var(--text-2);line-height:1.5;
}
.nav-item::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;border-radius:2px;background:var(--cyan);
  box-shadow:0 0 12px rgba(55,214,192,0.8);
  transition:height .22s ease;
}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,0.04);}
.nav-item:hover::before{height:20px;}
.nav-item.is-active{
  color:#fff;background:linear-gradient(90deg,rgba(55,214,192,0.16),rgba(55,214,192,0.02));
  font-weight:600;
}
.nav-item.is-active::before{height:24px;}
.rail-foot{margin-top:auto;padding-top:22px;}
.rail-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;min-height:44px;border-radius:var(--radius-pill);
  background:linear-gradient(135deg,#48E4CE,#22B8A5);color:#04211D;
  font-size:14px;font-weight:700;box-shadow:0 0 24px rgba(55,214,192,0.32);
  transition:transform .2s ease,box-shadow .2s ease;
}
.rail-cta:hover{color:#04211D;transform:translateY(-2px);box-shadow:0 0 32px rgba(55,214,192,0.5);}
.rail-cta:active{transform:translateY(0);}
.rail-note{margin-top:16px;font-size:12px;line-height:1.75;color:var(--text-3);}

/* ---------- 移动顶栏 ---------- */
.mobile-bar{
  display:none;align-items:center;justify-content:space-between;gap:12px;
  position:sticky;top:0;z-index:40;height:56px;padding:0 16px;
  background:rgba(7,16,25,0.94);border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.mobile-bar .brand-text{font-size:14px;}
.menu-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,0.04);color:var(--text);font-size:16px;cursor:pointer;
}
.menu-btn:hover{border-color:rgba(55,214,192,0.5);color:var(--cyan);}

.drawer{padding:22px 18px;background:var(--bg-2);height:100%;}
.drawer .brand-link{margin-bottom:26px;}
.drawer .rail-cta{margin-top:26px;}

/* ---------- 内容主体 ---------- */
.main-area{min-width:0;padding-bottom:0;}
section{position:relative;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:56px 0 68px;
  background:
    linear-gradient(112deg,rgba(5,10,18,0.95) 0%,rgba(5,10,18,0.78) 52%,rgba(6,18,26,0.62) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(55,214,192,0.5),transparent);
}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);margin-bottom:18px;
}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--cyan);}
.crumb span[aria-current]{color:var(--text-2);}
.eyebrow{
  display:inline-block;margin:0 0 16px;font-size:12.5px;font-weight:600;
  letter-spacing:.14em;color:var(--amber);text-transform:uppercase;
}
.page-hero h1{
  font-size:clamp(30px,4.2vw,50px);font-weight:800;line-height:1.16;
  letter-spacing:-0.015em;max-width:16em;
}
.hero-lead{
  margin:22px 0 0;max-width:46em;font-size:16.5px;line-height:1.9;color:var(--text-2);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin:28px 0 0;}
.hero-tags li{
  padding:6px 14px;border-radius:var(--radius-pill);font-size:13px;
  color:var(--cyan);background:rgba(55,214,192,0.09);
  border:1px solid rgba(55,214,192,0.28);
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:32px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:46px;padding:0 24px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
}
.btn i{font-size:13px;transition:transform .2s ease;}
.btn-primary{
  background:linear-gradient(135deg,#48E4CE,#22B8A5);color:#04211D;
  box-shadow:0 0 26px rgba(55,214,192,0.35);
}
.btn-primary:hover{color:#04211D;transform:translateY(-2px);box-shadow:0 0 36px rgba(55,214,192,0.52);}
.btn-ghost{
  background:rgba(255,255,255,0.04);color:var(--cyan);
  border-color:rgba(55,214,192,0.55);
}
.btn-ghost:hover{color:#63EDD9;border-color:var(--cyan);transform:translateY(-2px);}
.btn:active{transform:translateY(1px);}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;min-height:44px;
  color:var(--cyan);font-size:15px;font-weight:600;
}
.btn-link:hover{color:#63EDD9;}
.btn-link:hover i{transform:translateX(4px);}

/* ---------- 通用区块 ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-head{position:relative;padding-left:20px;margin-bottom:44px;max-width:780px;}
.section-head::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;
  background:linear-gradient(180deg,var(--cyan),rgba(55,214,192,0));
}
.section-head::after{
  content:"";position:absolute;left:-3px;top:6px;width:7px;height:7px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 14px rgba(55,214,192,0.85);
}
.section-head h2{
  font-size:clamp(24px,2.8vw,34px);font-weight:700;line-height:1.28;
}
.section-head p{margin-top:16px;font-size:15.5px;line-height:1.8;color:var(--text-2);}

/* ---------- 卡片网格 ---------- */
.grid-cases{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:26px;align-items:start;
}
.case-card{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--radius-card);border:1px solid var(--line-soft);
  background:var(--glass);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.09);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.case-card:hover{
  transform:translateY(-4px);
  border-color:rgba(55,214,192,0.55);
  box-shadow:var(--shadow-hover),inset 0 1px 0 rgba(255,255,255,0.14);
}
.case-media{
  position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--bg-3);
}
.case-card:nth-child(4n+1) .case-media{aspect-ratio:4/3;}
.case-card:nth-child(4n+4) .case-media{aspect-ratio:16/10;}
.case-media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s ease;
}
.case-card:hover .case-media img{transform:scale(1.04);}
.case-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,10,18,0.05) 0%,rgba(5,10,18,0.55) 100%);
}
.case-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.badge{
  align-self:flex-start;display:inline-block;padding:4px 10px;border-radius:var(--radius-badge);
  font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--amber);background:rgba(233,161,92,0.12);
  border:1px solid rgba(233,161,92,0.26);
}
.badge-cyan{color:var(--cyan);background:rgba(55,214,192,0.10);border-color:rgba(55,214,192,0.28);}
.case-body h3{font-size:20px;font-weight:600;line-height:1.45;}
.case-body p{
  font-size:14.5px;line-height:1.8;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.case-meta{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  margin-top:auto;padding-top:8px;font-size:13px;color:var(--text-3);
}
.case-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);}
.case-arrow{
  position:absolute;right:20px;bottom:20px;width:34px;height:34px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-2);font-size:12px;
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.case-card:hover .case-arrow{color:var(--cyan);border-color:rgba(55,214,192,0.6);transform:translateX(3px);}

.grid-foot{display:flex;flex-direction:column;align-items:center;gap:26px;margin-top:48px;}
.pager{display:flex;align-items:center;gap:10px;}
.pager a,.pager span{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:40px;height:40px;padding:0 12px;border-radius:var(--radius-pill);
  border:1px solid var(--line);font-size:14px;color:var(--text-2);
  transition:border-color .2s ease,color .2s ease,background .2s ease;
}
.pager a:hover{border-color:rgba(55,214,192,0.6);color:var(--cyan);}
.pager .is-current{border-color:var(--cyan);color:var(--cyan);background:rgba(55,214,192,0.10);font-weight:600;}

/* ---------- 自查清单 ---------- */
.check-panel{
  border-radius:var(--radius-card);border:1px solid var(--line-soft);
  background:var(--glass);box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.09);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  padding:34px 34px 30px;
}
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 34px;}
.check-item{display:flex;gap:14px;align-items:flex-start;}
.check-no{
  flex:0 0 30px;height:30px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;color:var(--amber);
  background:rgba(233,161,92,0.10);border:1px solid rgba(233,161,92,0.28);
}
.check-item h3{font-size:16.5px;font-weight:600;line-height:1.5;margin-bottom:4px;}
.check-item p{font-size:14px;line-height:1.75;color:var(--text-2);margin:0;}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;
}
.stat-card{
  padding:28px 26px;border-radius:var(--radius-card);
  border:1px solid var(--line-soft);background:var(--glass);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,0.09);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:transform .24s ease,border-color .24s ease;
}
.stat-card:hover{transform:translateY(-3px);border-color:rgba(55,214,192,0.45);}
.stat-num{
  display:block;font-size:clamp(28px,3.2vw,38px);font-weight:800;line-height:1.1;
  color:var(--cyan);letter-spacing:-0.02em;
}
.stat-num small{font-size:15px;font-weight:600;color:var(--text-2);margin-left:6px;}
.stat-card p{margin-top:10px;font-size:14px;line-height:1.75;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.faq-item{
  border-radius:var(--radius-card);border:1px solid var(--line-soft);
  background:var(--glass);box-shadow:inset 0 1px 0 rgba(255,255,255,0.08);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  margin-bottom:14px;position:relative;overflow:hidden;
  transition:border-color .22s ease,background .22s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;
  background:var(--cyan);border-radius:2px;opacity:0;transition:opacity .22s ease;
}
.faq-item[open]{border-color:rgba(55,214,192,0.45);}
.faq-item[open]::before{opacity:1;}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 24px;font-size:16.5px;font-weight:600;color:var(--text);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--cyan);font-size:16px;font-weight:400;
  transition:transform .25s ease,border-color .25s ease;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg);border-color:rgba(55,214,192,0.55);}
.faq-answer{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--text-2);}
.faq-answer p{margin:0 0 .8em;}
.faq-answer p:last-child{margin-bottom:0;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:20px;border:1px solid rgba(55,214,192,0.22);
  background:
    linear-gradient(110deg,rgba(7,16,25,0.94),rgba(10,26,36,0.82)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding:44px 42px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(22px,2.5vw,30px);font-weight:700;line-height:1.3;}
.cta-band p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--text-2);max-width:44em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:20px;
  background:linear-gradient(180deg,rgba(5,10,18,0.6),rgba(4,8,14,0.98));
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
  padding-bottom:44px;
}
.footer-brand .brand-link{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--text-3);max-width:32em;}
.footer-col h4{
  font-size:14px;font-weight:700;color:var(--text);margin-bottom:16px;letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col li a{font-size:14px;color:var(--text-2);}
.footer-col li a:hover{color:var(--cyan);}
.footer-col p{font-size:13.5px;line-height:1.95;color:var(--text-3);margin:0;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .app-shell{grid-template-columns:200px minmax(0,1fr);}
  .container{padding:0 24px;}
  .section{padding:72px 0;}
}
@media (max-width:1023px){
  .app-shell{grid-template-columns:minmax(0,1fr);}
  .side-rail{display:none;}
  .mobile-bar{display:flex;}
  .page-hero{padding:40px 0 52px;}
  .section{padding:64px 0;}
  .grid-cases{gap:22px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .cta-band{padding:36px 30px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .grid-cases{grid-template-columns:minmax(0,1fr);gap:20px;}
  .case-card:nth-child(4n+1) .case-media,
  .case-card:nth-child(4n+4) .case-media{aspect-ratio:16/9;}
  .check-grid{grid-template-columns:minmax(0,1fr);}
  .check-panel{padding:26px 22px 22px;}
  .stat-strip{grid-template-columns:minmax(0,1fr);}
  .section-head{margin-bottom:32px;}
  .hero-lead{font-size:15.5px;}
  .cta-band{padding:30px 22px;gap:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:520px){
  body{font-size:15.5px;}
  .page-hero h1{font-size:27px;}
  .section{padding:52px 0;}
  .case-body{padding:18px 18px 20px;}
  .case-body h3{font-size:18px;}
  .hero-actions{width:100%;}
  .hero-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .faq-item summary{padding:16px 18px;font-size:15.5px;}
  .faq-answer{padding:0 18px 18px;}
}
@media (hover:none){
  .case-card:hover{transform:none;}
  .stat-card:hover{transform:none;}
  .case-card:hover .case-media img{transform:none;}
}

/* roulang page: category3 */
/* ========== 设计变量 ========== */
:root{
  --bg:#050A12;
  --bg-2:#0A1421;
  --bg-3:#07101B;
  --brand:#37D6C0;
  --brand-deep:#22b5a2;
  --amber:#E9A15C;
  --text:#E8F0F7;
  --text-2:#93A6BA;
  --text-3:#6B7E92;
  --line:rgba(120,180,200,.16);
  --line-strong:rgba(120,180,200,.30);
  --glass:linear-gradient(160deg,rgba(255,255,255,.070),rgba(255,255,255,.026));
  --r-card:16px;
  --r-img:18px;
  --r-badge:6px;
  --r-input:10px;
  --shadow:0 18px 40px -18px rgba(0,0,0,.75);
  --shadow-hover:0 24px 48px -18px rgba(0,0,0,.85);
  --nav-w:232px;
  --sp-section:96px;
  --ease:200ms ease;
}

/* ========== 基础重置 ========== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease);}
a:hover{color:#63eeda;}
button{font:inherit;cursor:pointer;}
h1,h2,h3,h4,h5{margin:0;color:#fff;font-weight:700;line-height:1.3;letter-spacing:-.005em;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(55,214,192,.28);color:#fff;}
 body::-webkit-scrollbar{width:10px;}
body::-webkit-scrollbar-thumb{background:rgba(120,180,200,.22);border-radius:10px;}
body::-webkit-scrollbar-track{background:var(--bg);}

/* ========== 布局骨架 ========== */
.off-canvas-wrapper{background:var(--bg);}
.off-canvas-content{background:var(--bg);box-shadow:none;}
.app-shell{
  display:grid;
  grid-template-columns:var(--nav-w) minmax(0,1fr);
  min-height:100vh;
}
.main-area{min-width:0;display:flex;flex-direction:column;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}

/* ========== 左侧竖向导航 ========== */
.side-nav{
  position:sticky;
  top:0;
  height:100vh;
  display:flex;
  flex-direction:column;
  padding:26px 16px 22px;
  background:linear-gradient(180deg,rgba(10,20,33,.97),rgba(5,10,18,.97));
  border-right:1px solid var(--line);
  overflow-y:auto;
  z-index:30;
}
.side-brand{padding:0 8px 26px;}
.brand-link{display:inline-flex;align-items:center;gap:10px;color:#fff;}
.brand-link:hover{color:#fff;}
.brand-mark{
  position:relative;
  flex:0 0 auto;
  width:24px;height:24px;
  border-radius:8px;
  border:1px solid rgba(55,214,192,.62);
  background:radial-gradient(circle at 50% 120%,rgba(55,214,192,.28),rgba(55,214,192,0) 70%);
}
.brand-mark::before{
  content:"";position:absolute;left:50%;top:4px;bottom:4px;width:2px;
  transform:translateX(-50%);border-radius:2px;
  background:linear-gradient(180deg,#5ee8d3,rgba(55,214,192,.05));
  box-shadow:0 0 10px rgba(55,214,192,.7);
}
.brand-text{font-size:15px;font-weight:700;letter-spacing:.02em;line-height:1.35;}
.nav-list{display:flex;flex-direction:column;gap:4px;flex:1 1 auto;}
.nav-label{
  margin:0 0 10px;padding-left:14px;
  font-size:11.5px;font-weight:600;letter-spacing:.16em;
  color:var(--text-3);
}
.nav-item{
  position:relative;
  display:flex;align-items:center;
  min-height:44px;
  padding:0 14px;
  border-radius:10px;
  font-size:15px;
  color:var(--text-2);
  transition:color var(--ease),background var(--ease);
}
.nav-item:hover{color:#fff;background:rgba(255,255,255,.045);}
.nav-item.is-active{color:#fff;background:rgba(55,214,192,.10);}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:50%;
  width:2px;height:20px;border-radius:2px;
  transform:translateY(-50%);
  background:var(--brand);
  box-shadow:0 0 14px rgba(55,214,192,.85);
}
.side-foot{margin-top:22px;padding-top:18px;border-top:1px solid var(--line);}
.side-foot .btn{width:100%;}
.side-note{margin:12px 0 0;font-size:12.5px;color:var(--text-3);text-align:center;}

/* ========== 移动端顶栏 ========== */
.mobile-bar{
  display:none;
  position:sticky;top:0;z-index:40;
  height:56px;
  align-items:center;justify-content:space-between;
  padding:0 16px;
  background:rgba(7,16,27,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.mobile-bar .brand-text{font-size:14.5px;}
.burger{
  width:44px;height:44px;
  display:grid;place-items:center;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:10px;
  color:var(--text);
  transition:border-color var(--ease),color var(--ease);
}
.burger:hover{border-color:rgba(55,214,192,.55);color:var(--brand);}
.burger span{display:block;width:17px;height:1.5px;background:currentColor;box-shadow:0 -6px 0 currentColor,0 6px 0 currentColor;border-radius:2px;}

/* ========== 移动端抽屉 ========== */
.drawer{
  width:288px;
  padding:22px 16px;
  background:linear-gradient(180deg,#0A1421,#050A12);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
}
.drawer-close{
  position:absolute;top:14px;right:14px;
  width:36px;height:36px;
  display:grid;place-items:center;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:10px;
  color:var(--text-2);
  font-size:19px;line-height:1;
  transition:color var(--ease),border-color var(--ease);
}
.drawer-close:hover{color:var(--brand);border-color:rgba(55,214,192,.55);}
.drawer-brand{padding:6px 44px 24px 6px;}
.drawer .nav-item{font-size:15px;}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 28px;
  border-radius:999px;
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  text-align:center;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),color var(--ease);
}
.btn-sm{min-height:44px;padding:0 20px;font-size:14px;}
.btn-primary{
  background:linear-gradient(135deg,#3fdec8,#22b5a2);
  color:#04201C;
  box-shadow:0 0 24px rgba(55,214,192,.34);
}
.btn-primary:hover{color:#04201C;transform:translateY(-1px);box-shadow:0 0 34px rgba(55,214,192,.52);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:rgba(255,255,255,.04);
  border-color:rgba(55,214,192,.48);
  color:var(--brand);
}
.btn-ghost:hover{background:rgba(55,214,192,.10);border-color:var(--brand);color:#6ff0dc;}
.btn-ghost:active{transform:translateY(1px);}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  min-height:44px;padding:0;
  color:var(--brand);font-size:15px;font-weight:600;
  background:none;border:0;
}
.btn-text .arw{transition:transform var(--ease);}
.btn-text:hover .arw{transform:translateX(4px);}

/* ========== 徽章 / 标签 ========== */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 11px;
  border-radius:var(--r-badge);
  font-size:12.5px;font-weight:600;
  letter-spacing:.02em;line-height:1.6;
}
.badge-amber{background:rgba(233,161,92,.13);color:var(--amber);border:1px solid rgba(233,161,92,.22);}
.badge-brand{background:rgba(55,214,192,.12);color:var(--brand);border:1px solid rgba(55,214,192,.24);}
.badge-line{background:rgba(255,255,255,.04);color:var(--text-2);border:1px solid var(--line);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  margin-bottom:14px;
  font-size:12.5px;font-weight:600;letter-spacing:.14em;
  color:var(--amber);
}

/* ========== 面包屑 ========== */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin-bottom:16px;
  font-size:13px;color:var(--text-3);
}
.crumbs a{color:var(--text-3);}
.crumbs a:hover{color:var(--brand);}
.crumbs .sep{color:rgba(120,180,200,.38);}
.crumbs .cur{color:var(--text-2);}

/* ========== 首屏 ========== */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:52px 0 66px;
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(180deg,rgba(5,10,18,.74),rgba(5,10,18,.95)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;z-index:1;
  background:linear-gradient(90deg,rgba(55,214,192,.6),rgba(55,214,192,0) 42%,rgba(233,161,92,0) 70%,rgba(233,161,92,.35));
}
.page-hero .container{position:relative;z-index:2;}
.page-hero h1{
  max-width:900px;
  font-size:clamp(28px,3.5vw,46px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.012em;
  margin-bottom:18px;
}
.hero-lead{
  max-width:660px;
  font-size:17px;
  line-height:1.8;
  color:var(--text-2);
  margin-bottom:24px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}

/* ========== 板块通用 ========== */
.section{padding:var(--sp-section) 0;}
.section-head{max-width:660px;margin-bottom:44px;}
.section-head h2{font-size:clamp(24px,2.8vw,34px);line-height:1.28;margin-bottom:14px;}
.section-sub{color:var(--text-2);font-size:16px;line-height:1.8;margin:0;}

/* ========== 流程时间线 ========== */
.timeline-wrap{position:relative;}
.timeline{position:relative;padding-left:52px;}
.timeline::before{
  content:"";position:absolute;left:15px;top:8px;bottom:8px;width:1px;
  background:linear-gradient(180deg,rgba(55,214,192,.85),rgba(55,214,192,.26) 58%,rgba(55,214,192,0));
}
.tl-item{position:relative;margin-bottom:22px;}
.tl-item:last-child{margin-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-41px;top:28px;
  width:9px;height:9px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 4px rgba(55,214,192,.12),0 0 16px rgba(55,214,192,.6);
}
.tl-card{
  padding:24px 26px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:var(--shadow);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.tl-card:hover{border-color:rgba(55,214,192,.42);transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.tl-head{display:flex;align-items:baseline;gap:12px;margin-bottom:10px;}
.tl-num{
  flex:0 0 auto;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--amber);font-variant-numeric:tabular-nums;
}
.tl-head h3{font-size:19px;font-weight:600;line-height:1.45;}
.tl-card p{font-size:15px;line-height:1.85;color:var(--text-2);margin:0;}

/* ========== 侧栏要点卡 ========== */
.side-panel{
  position:sticky;top:26px;
  padding:26px 24px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  box-shadow:var(--shadow);
}
.side-panel h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.side-panel .panel-sub{font-size:13px;color:var(--text-3);margin-bottom:18px;}
.side-panel ul li{
  position:relative;
  padding-left:18px;
  margin-bottom:14px;
  font-size:14.5px;line-height:1.8;
  color:var(--text-2);
}
.side-panel ul li:last-child{margin-bottom:0;}
.side-panel ul li::before{
  content:"";position:absolute;left:0;top:9px;
  width:6px;height:6px;border-radius:2px;
  background:var(--amber);transform:rotate(45deg);
}
.side-panel .panel-foot{
  margin-top:20px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ========== 图文区 ========== */
.media-frame{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.08);
  box-shadow:var(--shadow);
}
.media-frame img{
  width:100%;height:100%;
  aspect-ratio:16/11;
  object-fit:cover;
  transition:transform .5s ease;
}
.media-frame:hover img{transform:scale(1.04);}
.media-split .cell + .cell{margin-top:0;}
.media-body{padding-left:8px;}
.media-body h2{font-size:clamp(23px,2.5vw,30px);line-height:1.3;margin-bottom:12px;}
.media-body .lead{color:var(--text-2);font-size:15.5px;line-height:1.85;margin-bottom:8px;}

.signal-list{margin-top:22px;}
.signal-list li{
  display:flex;gap:16px;
  padding:18px 0;
  border-top:1px solid var(--line);
}
.signal-list li:first-child{border-top:0;padding-top:0;}
.signal-num{
  flex:0 0 auto;padding-top:3px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--amber);font-variant-numeric:tabular-nums;
}
.signal-list h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:6px;}
.signal-list p{margin:0;font-size:15px;line-height:1.8;color:var(--text-2);}

/* ========== FAQ ========== */
.faq-block{max-width:860px;}
.faq-acc.accordion{background:transparent;border:0;margin:0;list-style:none;}
.faq-acc .accordion-item{
  margin-bottom:14px;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--glass);
  overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-acc .accordion-item:hover{border-color:rgba(55,214,192,.36);}
.faq-acc .accordion-item.is-active{
  border-color:rgba(55,214,192,.5);
  box-shadow:0 0 0 1px rgba(55,214,192,.16),var(--shadow);
}
.faq-acc .accordion-title{
  position:relative;
  display:block;
  padding:20px 58px 20px 24px;
  border:0;
  background:transparent;
  color:var(--text);
  font-size:17px;
  font-weight:600;
  line-height:1.55;
  transition:color var(--ease);
}
.faq-acc .accordion-title:hover{color:#fff;}
.faq-acc .accordion-title::before{
  content:"+";
  position:absolute;right:22px;top:50%;
  width:auto;height:auto;margin:0;float:none;
  transform:translateY(-50%);
  background:none;
  font-size:22px;font-weight:400;line-height:1;
  color:var(--brand);
  transition:transform var(--ease),color var(--ease);
}
.faq-acc .accordion-item.is-active .accordion-title::before{
  content:"−";
  transform:translateY(-50%) rotate(180deg);
}
.faq-acc .accordion-content{
  padding:0 26px 22px 24px;
  border:0;
  background:transparent;
  color:var(--text-2);
  font-size:15px;
  line-height:1.85;
}
.faq-acc .accordion-content p{margin:0;}

/* ========== 订阅 / CTA ========== */
.section-cta{padding-bottom:calc(var(--sp-section) + 8px);}
.cta-card{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,380px);
  gap:48px;
  align-items:center;
  padding:44px 44px;
  border-radius:22px;
  border:1px solid var(--line-strong);
  background:
    radial-gradient(circle at 0% 0%,rgba(55,214,192,.13),rgba(55,214,192,0) 55%),
    linear-gradient(160deg,rgba(255,255,255,.062),rgba(255,255,255,.02));
  box-shadow:var(--shadow);
}
.cta-copy h2{font-size:clamp(22px,2.4vw,30px);line-height:1.32;margin-bottom:14px;}
.cta-copy p{color:var(--text-2);font-size:15.5px;line-height:1.85;margin-bottom:22px;}
.cta-links{display:flex;flex-wrap:wrap;gap:12px;}
.cta-form label{
  display:block;
  margin-bottom:8px;
  font-size:13px;color:var(--text-2);letter-spacing:.02em;
}
.cta-form input{
  width:100%;
  height:50px;
  margin-bottom:14px;
  padding:0 16px;
  border-radius:var(--r-input);
  border:1px solid var(--line);
  background:rgba(5,10,18,.65);
  color:var(--text);
  font-size:15px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.cta-form input::placeholder{color:var(--text-3);}
.cta-form input:focus{
  outline:none;
  border-color:rgba(55,214,192,.72);
  box-shadow:0 0 0 3px rgba(55,214,192,.16);
}
.cta-form .btn{width:100%;}
.form-note{margin:12px 0 0;font-size:12.5px;line-height:1.7;color:var(--text-3);}

/* ========== 页脚 ========== */
.site-footer{
  margin-top:auto;
  padding:64px 0 0;
  background:#040910;
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:52px;
}
.footer-brand .brand-link{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--text-2);max-width:320px;margin:0;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li:last-child{margin-bottom:0;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);}
.footer-col p{font-size:13.5px;line-height:1.9;color:var(--text-3);margin:0;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ========== 响应式 ========== */
@media (max-width:1199px){
  .container{padding:0 32px;}
  :root{--nav-w:200px;}
  .cta-card{gap:36px;padding:38px 34px;}
}
@media (max-width:1023px){
  .app-shell{grid-template-columns:minmax(0,1fr);}
  .side-nav{display:none;}
  .mobile-bar{display:flex;}
  :root{--sp-section:64px;}
  .container{padding:0 24px;}
  .page-hero{padding:40px 0 52px;}
  .side-panel{position:static;margin-top:32px;}
  .media-body{padding-left:0;margin-top:32px;}
  .cta-card{grid-template-columns:minmax(0,1fr);gap:28px;padding:34px 28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--sp-section:48px;}
  body{font-size:15.5px;line-height:1.8;}
  .container{padding:0 18px;}
  .page-hero h1{font-size:clamp(24px,6.4vw,32px);}
  .hero-lead{font-size:15.5px;}
  .section-head{margin-bottom:32px;}
  .timeline{padding-left:38px;}
  .timeline::before{left:9px;}
  .tl-item::before{left:-33px;top:24px;}
  .tl-card{padding:20px 20px;}
  .tl-head{flex-direction:column;gap:4px;align-items:flex-start;}
  .tl-head h3{font-size:17px;}
  .side-panel{padding:22px 20px;}
  .faq-acc .accordion-title{font-size:16px;padding:18px 52px 18px 20px;}
  .faq-acc .accordion-content{padding:0 20px 20px 20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:36px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .site-footer{padding-top:48px;}
}
@media (max-width:520px){
  .btn{width:100%;}
  .side-foot .btn{width:100%;}
  .cta-links .btn{width:100%;}
  .hero-tags .badge{font-size:12px;}
  .signal-list h3{font-size:16.5px;}
}

/* roulang page: category4 */
:root{
  --bg:#050A12;
  --bg-2:#0A1421;
  --bg-3:#08101B;
  --surface:rgba(255,255,255,.045);
  --surface-2:rgba(255,255,255,.06);
  --line:rgba(120,180,200,.16);
  --line-strong:rgba(120,180,200,.3);
  --brand:#37D6C0;
  --brand-hi:#5FE7D4;
  --brand-soft:rgba(55,214,192,.12);
  --amber:#E9A15C;
  --amber-soft:rgba(233,161,92,.12);
  --text:#E8F0F7;
  --text-2:#93A6BA;
  --text-3:#6B7E92;
  --danger:#E4695E;
  --radius-s:6px;
  --radius-m:10px;
  --radius-l:16px;
  --radius-xl:18px;
  --shadow:0 18px 40px -18px rgba(0,0,0,.75);
  --shadow-hi:0 26px 50px -20px rgba(0,0,0,.85);
  --nav-w:232px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --gap-s:12px;
  --gap-m:24px;
  --gap-l:44px;
}

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans","Hiragino Sans GB","Microsoft YaHei","Inter","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-hi)}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,h5,h6{margin:0;color:var(--text);font-weight:700;letter-spacing:-.005em}
h1{font-size:clamp(30px,4.2vw,50px);line-height:1.16;font-weight:800}
h2{font-size:clamp(24px,2.8vw,34px);line-height:1.28}
h3{font-size:20px;line-height:1.42;font-weight:600}
h4{font-size:16px;line-height:1.5;font-weight:600}
button{font-family:inherit}
input,textarea,select{font-family:inherit}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid rgba(55,214,192,.75);outline-offset:3px;border-radius:6px}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#04212A;padding:10px 18px;border-radius:0 0 10px 0;z-index:200}
.skip-link:focus{left:0;color:#04212A}

/* ============ 左侧导航 ============ */
.side-nav{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  display:flex;
  flex-direction:column;
  padding:26px 18px 20px;
  background:linear-gradient(180deg,rgba(10,20,33,.97),rgba(4,8,14,.99));
  border-right:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  z-index:60;
}
.brand-link{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
.side-nav .brand-link{padding:0 6px 20px;border-bottom:1px solid var(--line);margin-bottom:18px}
.brand-mark{
  position:relative;display:inline-block;flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  border:1px solid rgba(55,214,192,.55);
  background:radial-gradient(circle at 50% 100%,rgba(55,214,192,.28),transparent 70%);
}
.brand-mark::before{
  content:"";position:absolute;left:50%;top:5px;bottom:5px;width:1px;transform:translateX(-50%);
  background:linear-gradient(180deg,var(--brand),rgba(55,214,192,0));
}
.brand-mark::after{
  content:"";position:absolute;left:50%;top:50%;width:6px;height:6px;transform:translate(-50%,-50%);
  border-radius:50%;background:var(--amber);box-shadow:0 0 10px rgba(233,161,92,.7);
}
.brand-text{font-size:16px;font-weight:700;color:var(--text);letter-spacing:.01em;line-height:1.25}
.nav-list{display:flex;flex-direction:column;gap:4px;flex:1 1 auto;overflow-y:auto;padding-bottom:14px}
.nav-label{font-size:11.5px;letter-spacing:.14em;color:var(--text-3);margin:0 0 10px;padding-left:12px;font-weight:600}
.nav-item{
  position:relative;display:flex;align-items:center;height:44px;padding:0 12px;
  border-radius:10px;color:var(--text-2);font-size:15px;text-decoration:none;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-item::before{
  content:"";position:absolute;left:0;top:50%;width:2px;height:22px;border-radius:2px;
  background:var(--brand);box-shadow:0 0 12px rgba(55,214,192,.75);
  transform:translateY(-50%) scaleY(0);transform-origin:center;transition:transform .22s var(--ease);
}
.nav-item:hover,.nav-item:focus-visible{color:var(--text);background:rgba(255,255,255,.045)}
.nav-item:hover::before{transform:translateY(-50%) scaleY(1)}
.nav-item.is-active{color:var(--brand-hi);background:rgba(55,214,192,.1)}
.nav-item.is-active::before{transform:translateY(-50%) scaleY(1)}
.nav-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}
.nav-contact{font-size:12.5px;line-height:1.8;color:var(--text-3);margin:14px 0 0}

/* 移动端顶栏 */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:80;
  align-items:center;justify-content:space-between;padding:0 16px;
  background:rgba(6,12,20,.94);border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.mobile-bar .brand-text{font-size:15px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:rgba(255,255,255,.04);cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--text);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-overlay{position:fixed;inset:0;background:rgba(3,7,13,.66);opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s;z-index:55}
.nav-overlay.is-visible{opacity:1;visibility:visible}

/* ============ 主体 ============ */
.page-main{position:relative;margin-left:var(--nav-w);min-height:100vh}
.page-main::before{
  content:"";position:absolute;left:22px;top:0;bottom:0;width:1px;z-index:2;pointer-events:none;
  background:linear-gradient(180deg,rgba(55,214,192,0) 0,rgba(55,214,192,.36) 8%,rgba(55,214,192,.36) 90%,rgba(55,214,192,0) 100%);
}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 48px 0 56px}

.section{padding:72px 0}
.section--alt{background:linear-gradient(180deg,rgba(10,20,33,.72),rgba(6,12,20,.3));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:38px}
.section-head h2{margin:10px 0 14px}
.section-lead{color:var(--text-2);font-size:16px;line-height:1.88;margin:0}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.14em;
  color:var(--amber);margin:0;text-transform:none;
}

/* Hero */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(105deg,rgba(5,10,18,.97) 0%,rgba(5,10,18,.88) 44%,rgba(8,16,27,.7) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;background-repeat:no-repeat;
}
.hero .container{position:relative;padding-top:34px;padding-bottom:66px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin:0 0 20px}
.crumbs a{color:var(--text-2);text-decoration:none}
.crumbs a:hover{color:var(--brand)}
.crumbs span[aria-hidden]{color:rgba(120,180,200,.4)}
.crumb-current{color:var(--text-2)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:44px;align-items:center}
.hero h1{margin:12px 0 0}
.hero-lead{color:var(--text-2);font-size:16.5px;line-height:1.9;margin:20px 0 0;max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:28px}
.hero-strips{list-style:none;display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 0;padding:0}
.hero-strips li{
  background:rgba(255,255,255,.055);border:1px solid var(--line);border-radius:999px;
  padding:8px 16px;font-size:13px;color:var(--text-2);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.hero-figure{margin:0}
.hero-figure img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-xl);
  border:1px solid rgba(255,255,255,.08);box-shadow:var(--shadow);
}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 26px;border-radius:999px;border:0;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;text-decoration:none;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#54E7D2,#1FB3A2);
  color:#04212A;
  box-shadow:0 10px 28px -12px rgba(55,214,192,.85);
}
.btn-primary:hover{color:#04212A;transform:translateY(-2px);box-shadow:0 16px 34px -12px rgba(55,214,192,.95)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:rgba(255,255,255,.04);border:1px solid rgba(55,214,192,.45);color:#7CE8D8;
}
.btn-ghost:hover{background:rgba(55,214,192,.12);border-color:rgba(55,214,192,.75);color:#9BF2E4;transform:translateY(-2px)}
.btn-block{width:100%}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:15px;font-weight:600;
  text-decoration:none;min-height:44px;transition:color .2s var(--ease);
}
.btn-text .arrow{display:inline-block;transition:transform .2s var(--ease)}
.btn-text:hover{color:var(--brand-hi)}
.btn-text:hover .arrow{transform:translateX(4px)}

/* 卡片 */
.card{
  position:relative;background:linear-gradient(180deg,rgba(255,255,255,.062),rgba(255,255,255,.026));
  border:1px solid var(--line);border-radius:var(--radius-l);box-shadow:var(--shadow);
  overflow:hidden;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.22),rgba(255,255,255,0));
  pointer-events:none;
}
.card:hover{transform:translateY(-4px);border-color:rgba(55,214,192,.45);box-shadow:var(--shadow-hi)}

.topic-card{display:flex;flex-direction:column;height:100%}
.topic-media{overflow:hidden}
.topic-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s var(--ease)}
.topic-card:hover .topic-media img{transform:scale(1.04)}
.topic-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.topic-body h3{margin:2px 0 0}
.topic-body p{margin:0;color:var(--text-2);font-size:15px;line-height:1.82}
.topic-body .btn-text{margin-top:auto}
.badge{
  display:inline-block;align-self:flex-start;font-size:12.5px;font-weight:600;
  color:var(--amber);background:var(--amber-soft);border:1px solid rgba(233,161,92,.28);
  border-radius:var(--radius-s);padding:3px 10px;line-height:1.6;
}
.badge--brand{color:var(--brand-hi);background:var(--brand-soft);border-color:rgba(55,214,192,.32)}

/* 答疑 + 表单 */
.support-grid{display:grid;grid-template-columns:minmax(0,1.62fr) minmax(0,1fr);gap:34px;align-items:start}
.faq{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.022));
  border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-item:hover{border-color:rgba(55,214,192,.34)}
.faq-item[open]{border-color:rgba(55,214,192,.42);box-shadow:inset 2px 0 0 var(--brand)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:18px 22px;font-size:17px;font-weight:600;color:var(--text);line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::marker{content:""}
.faq-icon{
  position:relative;flex:0 0 20px;width:20px;height:20px;margin-top:2px;border-radius:50%;
  border:1px solid rgba(55,214,192,.5);transition:transform .25s var(--ease),border-color .25s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transition:transform .25s var(--ease),opacity .25s var(--ease);
}
.faq-icon::before{width:9px;height:1.5px;transform:translate(-50%,-50%)}
.faq-icon::after{width:1.5px;height:9px;transform:translate(-50%,-50%)}
.faq-item[open] .faq-icon{transform:rotate(180deg);border-color:rgba(55,214,192,.85)}
.faq-item[open] .faq-icon::after{opacity:0;transform:translate(-50%,-50%) scaleY(0)}
.faq-a{padding:0 22px 20px;color:var(--text-2);font-size:15px;line-height:1.9}
.faq-a p{margin:0 0 .6em}
.faq-a p:last-child{margin-bottom:0}
.faq-foot{
  margin-top:22px;padding:20px 22px;border-radius:14px;border:1px dashed rgba(120,180,200,.28);
  background:rgba(255,255,255,.025);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
}
.faq-foot p{margin:0;color:var(--text-2);font-size:14.5px}

.support-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:24px}
.form-card{padding:26px 24px 24px}
.form-card h3{margin:0 0 6px;font-size:21px}
.form-intro{color:var(--text-2);font-size:14px;line-height:1.8;margin:0 0 18px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:7px;font-weight:500}
.field input,.field textarea{
  width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:var(--radius-m);
  color:var(--text);padding:12px 14px;font-size:15px;line-height:1.6;height:auto;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field textarea{resize:vertical;min-height:92px}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field textarea:focus{
  outline:none;border-color:rgba(55,214,192,.72);background:rgba(55,214,192,.05);
  box-shadow:0 0 0 3px rgba(55,214,192,.16);
}
.form-card .btn{margin-top:6px}
.form-note{font-size:12.5px;color:var(--text-3);line-height:1.75;margin:14px 0 0}
.form-tip{font-size:13px;color:var(--text-3);margin:10px 0 0;min-height:0;line-height:1.7}
.form-tip.is-ok{color:#6FE3CF}
.contact-card{padding:22px 24px 24px}
.contact-card h4{margin:0 0 12px;font-size:15px;color:var(--text)}
.contact-card ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.contact-card li{position:relative;padding-left:16px;font-size:14px;color:var(--text-2);line-height:1.8}
.contact-card li::before{
  content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 8px rgba(55,214,192,.7);
}

/* 两栏 + 步骤 */
.two-col{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:38px;align-items:start}
.steps{position:relative;padding-left:34px;margin-top:6px}
.steps::before{
  content:"";position:absolute;left:9px;top:10px;bottom:12px;width:1px;
  background:linear-gradient(180deg,rgba(55,214,192,.62),rgba(55,214,192,.05));
}
.step{position:relative;padding-bottom:30px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:-30px;top:9px;width:9px;height:9px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 4px rgba(55,214,192,.14);
}
.step-num{font-size:12.5px;font-weight:700;letter-spacing:.16em;color:var(--amber);margin:0 0 6px}
.step h3{font-size:19px;margin:0 0 8px}
.step p{margin:0;color:var(--text-2);font-size:15px;line-height:1.85}
.quick-card{padding:26px 24px;position:sticky;top:24px}
.quick-card h3{font-size:17px;margin:0 0 16px}
.check-list{list-style:none;display:flex;flex-direction:column;gap:12px}
.check-list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--text-2);line-height:1.8}
.check-list li::before{
  content:"";position:absolute;left:0;top:8px;width:11px;height:11px;border-radius:3px;
  border:1px solid rgba(55,214,192,.6);background:rgba(55,214,192,.14);
}

/* 数据条 */
.stat-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.stat-card{padding:24px 22px}
.stat-num{display:block;font-size:clamp(22px,2.4vw,28px);font-weight:800;color:var(--brand);letter-spacing:-.01em;line-height:1.3}
.stat-card p{margin:10px 0 0;font-size:14px;color:var(--text-2);line-height:1.8}

/* CTA */
.section--cta{padding-top:24px;padding-bottom:84px}
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  padding:38px 40px;border-radius:20px;border:1px solid rgba(55,214,192,.24);
  background:linear-gradient(120deg,rgba(55,214,192,.12),rgba(255,255,255,.028) 62%,rgba(233,161,92,.07));
  box-shadow:var(--shadow);
}
.cta-band h2{font-size:clamp(22px,2.4vw,28px);margin:0 0 10px}
.cta-band p{margin:0;color:var(--text-2);font-size:15px;line-height:1.85;max-width:560px}

/* 页脚 */
.site-footer{background:#03070D;border-top:1px solid var(--line);padding:60px 0 26px}
.site-footer .container{padding-left:48px;padding-right:48px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:38px}
.footer-brand p{color:var(--text-3);font-size:14px;line-height:1.85;margin:16px 0 0;max-width:330px}
.footer-col h4{font-size:15px;margin:0 0 14px;color:var(--text);font-weight:600}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{color:var(--text-2);font-size:14px;text-decoration:none}
.footer-col a:hover{color:var(--brand)}
.footer-col p{color:var(--text-3);font-size:14px;line-height:1.9;margin:0}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);line-height:1.8;
}

/* 响应式 */
@media (max-width:1199px){
  .container{padding:0 36px 0 48px}
  .page-main::before{left:18px}
  .support-grid{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:26px}
  .two-col{gap:28px}
}
@media (max-width:1023px){
  .mobile-bar{display:flex}
  .nav-toggle{display:flex}
  .side-nav{
    width:274px;transform:translateX(-100%);transition:transform .28s var(--ease);
    box-shadow:0 0 60px rgba(0,0,0,.6);
  }
  .side-nav.is-open{transform:translateX(0)}
  .page-main{margin-left:0;padding-top:60px}
  .page-main::before{left:12px}
  .container{padding:0 28px 0 34px}
  .site-footer .container{padding-left:28px;padding-right:28px}
  .hero-grid{grid-template-columns:1fr;gap:30px}
  .hero-figure{order:-1;max-width:520px}
  .hero .container{padding-top:26px;padding-bottom:52px}
  .section{padding:56px 0}
  .support-grid{grid-template-columns:1fr;gap:30px}
  .support-side{position:static}
  .form-card{position:static}
  .two-col{grid-template-columns:1fr;gap:26px}
  .quick-card{position:static}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta-band{padding:30px 26px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 20px 0 30px}
  .site-footer .container{padding-left:20px;padding-right:20px}
  .page-main::before{left:10px}
  .section{padding:46px 0}
  .section-head{margin-bottom:28px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-actions .btn-text{justify-content:flex-start}
  .stat-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
  .faq-item summary{font-size:16px;padding:16px 16px}
  .faq-a{padding:0 16px 18px}
  .faq-foot{padding:18px}
  .step h3{font-size:18px}
  .cta-band .btn{width:100%}
}
@media (max-width:480px){
  .container{padding:0 16px 0 26px}
  .site-footer .container{padding-left:16px;padding-right:16px}
  h1{font-size:clamp(26px,7.6vw,34px)}
  .hero-lead{font-size:15.5px}
  .hero-strips li{font-size:12.5px;padding:7px 13px}
  .form-card,.quick-card,.contact-card,.stat-card{padding:20px 18px}
  .btn{width:100%}
  .btn-text{width:auto}
}
@media (hover:none){
  .card:hover{transform:none;box-shadow:var(--shadow)}
  .topic-card:hover .topic-media img{transform:none}
}