/* roulang page: index */
:root{
  --bg-0:#06121A;
  --bg-1:#0A1E27;
  --bg-2:#0F2A33;
  --glass:rgba(255,255,255,.055);
  --glass-hi:rgba(255,255,255,.10);
  --line:rgba(122,224,214,.14);
  --line-hi:rgba(122,224,214,.34);
  --primary:#23A69C;
  --primary-deep:#0E6F6C;
  --primary-glow:rgba(35,166,156,.45);
  --accent:#F0A93B;
  --accent-glow:rgba(240,169,59,.36);
  --text-1:#E6F2F1;
  --text-2:#9CB5B6;
  --text-3:#6B8588;
  --ok:#46C08A;
  --err:#E5645B;
  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;transition:color .25s var(--ease);}
a:hover{color:#4fd0c5;}
button{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:.005em;color:var(--text-1);line-height:1.25;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(35,166,156,.55);border-radius:8px;}
::selection{background:rgba(35,166,156,.35);color:#fff;}

.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}
@media (min-width:1400px){.wrap{max-width:1320px;}}

.sec{position:relative;padding:104px 0;}
.sec-alt{background:var(--bg-1);}
.sec-glow::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(680px 340px at 18% 0%,rgba(35,166,156,.07),transparent 70%),
             radial-gradient(560px 300px at 88% 100%,rgba(240,169,59,.045),transparent 72%);
}
.sec-glow>*{position:relative;z-index:1;}

.sec-head{max-width:760px;margin-bottom:52px;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--primary);
  background:rgba(35,166,156,.10);
  border:1px solid rgba(35,166,156,.32);
  border-radius:999px;padding:5px 14px;margin-bottom:18px;
}
.eyebrow i{font-size:14px;}
h2{font-size:clamp(26px,3.2vw,38px);line-height:1.25;}
.sec-head h2{margin-bottom:16px;}
.sec-desc{color:var(--text-2);font-size:16px;max-width:720px;}
.sec-head.center .sec-desc{margin:0 auto;}

.btn-main,.btn-ghost,.btn-text{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;cursor:pointer;transition:all .3s var(--ease);border:none;}
.btn-main{
  background:var(--primary);color:#031316;border-radius:999px;
  padding:13px 28px;
  box-shadow:0 0 0 1px rgba(35,166,156,.6),0 8px 28px var(--primary-glow);
}
.btn-main:hover{background:#31bdb1;color:#031316;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(35,166,156,.75),0 12px 34px var(--primary-glow);}
.btn-main:active{transform:translateY(1px);}
.btn-main.sm{padding:9px 20px;font-size:14px;}
.btn-ghost{
  background:var(--glass);color:var(--text-1);border:1px solid var(--line);
  border-radius:12px;padding:12px 24px;
  backdrop-filter:blur(10px);
}
.btn-ghost:hover{background:var(--glass-hi);border-color:var(--line-hi);color:var(--text-1);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-text{background:none;color:var(--primary);padding:0;font-weight:600;}
.btn-text i{transition:transform .3s var(--ease);}
.btn-text:hover i{transform:translateX(4px);}
.btn-text:hover{color:#4fd0c5;}

.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;line-height:1;padding:6px 12px;border-radius:999px;
  background:rgba(35,166,156,.12);color:#57c9be;border:1px solid rgba(35,166,156,.32);
}
.badge-pill.amber{background:rgba(240,169,59,.12);color:var(--accent);border-color:rgba(240,169,59,.34);}
.badge-pill.gray{background:rgba(255,255,255,.06);color:var(--text-2);border-color:var(--line);}

/* ---------- HEADER ---------- */
.site-head{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(6,18,26,.42);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .3s var(--ease),box-shadow .3s var(--ease),height .24s var(--ease);
}
.site-head.is-stuck{background:rgba(6,18,26,.94);box-shadow:0 12px 32px rgba(0,0,0,.5);}
.head-inner{display:flex;align-items:center;gap:24px;height:76px;transition:height .24s var(--ease);}
.site-head.is-stuck .head-inner{height:62px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--primary),var(--primary-deep));
  color:#03191c;font-size:18px;box-shadow:0 6px 18px rgba(35,166,156,.36);
}
.brand-text{font-size:18px;font-weight:700;color:var(--text-1);letter-spacing:.01em;white-space:nowrap;}
.head-nav{display:flex;align-items:center;gap:6px;margin-left:12px;flex:1 1 auto;}
.head-nav a{
  position:relative;color:var(--text-2);font-size:15px;padding:8px 14px;border-radius:10px;
  transition:color .25s var(--ease),background .25s var(--ease);white-space:nowrap;
}
.head-nav a:hover{color:var(--text-1);background:var(--glass);}
.head-nav a.active{color:var(--text-1);}
.head-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px var(--primary-glow);
}
.head-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;margin-left:auto;}
.icon-btn{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);font-size:17px;
  transition:all .25s var(--ease);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-hi);background:var(--glass-hi);}
.menu-btn{display:none;width:38px;height:38px;border-radius:11px;background:var(--glass);border:1px solid var(--line);color:var(--text-1);font-size:19px;place-items:center;}
.head-drawer-cta{display:none;}

/* ---------- HERO ---------- */
.hero{position:relative;padding:172px 0 96px;overflow:hidden;background:var(--bg-0);}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
   radial-gradient(900px 480px at 12% 6%,rgba(35,166,156,.10),transparent 68%),
   radial-gradient(700px 420px at 92% 84%,rgba(240,169,59,.06),transparent 70%);
  pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;position:relative;z-index:1;}
.hero h1{font-size:clamp(34px,4.8vw,54px);line-height:1.15;font-weight:700;margin-bottom:20px;}
.hero h1 span{color:var(--primary);}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:32px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 26px;}
.hero-trust span{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);}
.hero-trust i{color:var(--primary);font-size:15px;}

.hero-panel{
  position:relative;border-radius:22px;overflow:hidden;min-height:420px;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border:1px solid var(--line);
  box-shadow:0 24px 60px rgba(0,0,0,.55);
}
.hero-panel::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(6,18,26,.86),rgba(10,30,39,.94));
}
.hero-panel::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(122,224,214,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(122,224,214,.07) 1px,transparent 1px);
  background-size:38px 38px;
  mask-image:radial-gradient(circle at 60% 40%,#000 25%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 60% 40%,#000 25%,transparent 78%);
}
.panel-inner{position:relative;z-index:2;padding:32px 30px;height:100%;display:flex;flex-direction:column;gap:16px;justify-content:center;}
.panel-title{font-size:15px;color:var(--text-2);letter-spacing:.02em;}
.panel-stat{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:var(--glass);border:1px solid var(--line);border-radius:14px;padding:16px 18px;
  backdrop-filter:blur(14px) saturate(140%);
  transition:all .3s var(--ease);
}
.panel-stat:hover{border-color:var(--line-hi);transform:translateY(-3px);}
.panel-stat .p-label{font-size:14px;color:var(--text-2);}
.panel-stat .p-val{font-size:20px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;}
.panel-note{font-size:13px;color:var(--text-3);line-height:1.75;}

/* ---------- TRUST BAR ---------- */
.trustbar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg-1);}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.trust-item{padding:34px 26px;border-right:1px solid var(--line);}
.trust-item:last-child{border-right:none;}
.trust-num{font-size:30px;font-weight:700;color:var(--accent);line-height:1.1;font-variant-numeric:tabular-nums;margin-bottom:8px;}
.trust-label{font-size:15px;color:var(--text-1);margin-bottom:4px;}
.trust-note{font-size:13px;color:var(--text-3);}

/* ---------- CARDS ---------- */
.g-card{
  position:relative;background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 18px 40px rgba(0,0,0,.45);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
  overflow:hidden;height:100%;
}
.g-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.42),rgba(255,255,255,0) 40%);
}
.g-card:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:0 24px 52px rgba(0,0,0,.55);}
.card-ico{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid rgba(35,166,156,.4);color:var(--primary);font-size:21px;margin-bottom:18px;
  background:rgba(35,166,156,.08);
}
.g-card h3{font-size:20px;line-height:1.4;font-weight:600;margin-bottom:10px;}
.g-card p{color:var(--text-2);font-size:15px;line-height:1.8;margin-bottom:18px;}
.feat-grid{display:grid;grid-template-columns:6fr 4fr;gap:24px;margin-bottom:24px;}
.feat-row3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card-wide{min-height:264px;}

/* ---------- SCENES ---------- */
.scene-row{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;margin-bottom:80px;}
.scene-row:last-child{margin-bottom:0;}
.scene-row.rev .scene-media{order:2;}
.scene-media{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);box-shadow:0 20px 48px rgba(0,0,0,.5);}
.scene-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);transition:transform .45s var(--ease);}
.scene-media:hover img{transform:scale(1.04);}
.scene-txt h3{font-size:clamp(22px,2.4vw,28px);margin:14px 0 16px;}
.scene-txt p{color:var(--text-2);margin-bottom:18px;}
.dot-list li{position:relative;padding-left:20px;color:var(--text-2);font-size:15px;margin-bottom:10px;}
.dot-list li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--primary);}

/* ---------- CASES ---------- */
.case-main{display:grid;grid-template-columns:5fr 7fr;gap:0;overflow:hidden;border-radius:var(--r-card);border:1px solid var(--line);background:var(--glass);box-shadow:0 18px 40px rgba(0,0,0,.45);margin-bottom:24px;}
.case-main .case-img{position:relative;min-height:320px;}
.case-main .case-img img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
.case-body{padding:34px 32px;}
.case-body h3{font-size:24px;margin:14px 0 14px;}
.case-body p{color:var(--text-2);margin-bottom:22px;}
.case-metrics{display:flex;gap:14px;flex-wrap:wrap;}
.metric{background:rgba(35,166,156,.09);border:1px solid rgba(35,166,156,.28);border-radius:12px;padding:12px 18px;min-width:150px;}
.metric b{display:block;font-size:20px;color:var(--accent);font-variant-numeric:tabular-nums;}
.metric span{font-size:13px;color:var(--text-3);}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}

/* ---------- PRICE ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;align-items:start;}
.price-card{
  position:relative;background:var(--glass);border:1px solid var(--line);border-radius:20px;padding:32px 28px;
  backdrop-filter:blur(14px) saturate(140%);box-shadow:0 18px 40px rgba(0,0,0,.45);
  transition:transform .3s var(--ease),border-color .3s var(--ease);
}
.price-card:hover{transform:translateY(-4px);border-color:var(--line-hi);}
.price-card.featured{
  border-color:rgba(240,169,59,.5);
  box-shadow:0 0 0 1px rgba(240,169,59,.28),0 24px 56px rgba(0,0,0,.55);
  transform:translateY(-12px);
  background:linear-gradient(180deg,rgba(240,169,59,.06),rgba(255,255,255,.045));
}
.price-card.featured:hover{transform:translateY(-16px);}
.price-tag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);}
.price-name{font-size:18px;font-weight:600;margin-bottom:6px;}
.price-desc{font-size:13px;color:var(--text-3);margin-bottom:20px;}
.price-num{font-size:38px;font-weight:700;color:var(--text-1);line-height:1.1;font-variant-numeric:tabular-nums;margin-bottom:22px;}
.price-num small{font-size:15px;font-weight:500;color:var(--text-3);margin-left:6px;}
.price-num.accent{color:var(--accent);}
.price-list li{display:flex;gap:10px;font-size:15px;color:var(--text-2);margin-bottom:12px;line-height:1.7;}
.price-list i{color:var(--primary);font-size:16px;flex:0 0 auto;margin-top:4px;}
.price-card .btn-main,.price-card .btn-ghost{width:100%;justify-content:center;margin-top:12px;}
.price-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin-top:30px;padding-top:22px;border-top:1px solid var(--line);}
.price-foot p{font-size:13px;color:var(--text-3);max-width:720px;}

/* ---------- NEWS ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:44px;flex-wrap:wrap;}
.news-lead{position:relative;display:block;height:100%;background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:0 18px 40px rgba(0,0,0,.45);transition:transform .3s var(--ease),border-color .3s var(--ease);}
.news-lead:hover{transform:translateY(-4px);border-color:var(--line-hi);}
.news-lead .nl-cover{position:relative;overflow:hidden;aspect-ratio:16/9;}
.news-lead .nl-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease);}
.news-lead:hover .nl-cover img{transform:scale(1.04);}
.news-lead .nl-body{padding:26px;}
.news-lead h3{font-size:22px;line-height:1.45;margin:12px 0 12px;color:var(--text-1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-lead p{color:var(--text-2);font-size:15px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:18px;}
.news-card{display:block;background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;height:100%;box-shadow:0 18px 40px rgba(0,0,0,.4);transition:transform .3s var(--ease),border-color .3s var(--ease);}
.news-card:hover{transform:translateY(-4px);border-color:var(--line-hi);}
.news-card .nc-cover{overflow:hidden;aspect-ratio:16/9;}
.news-card .nc-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease);}
.news-card:hover .nc-cover img{transform:scale(1.04);}
.news-card .nc-body{padding:20px;}
.news-card h3{font-size:17px;line-height:1.5;color:var(--text-1);margin:10px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card p{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px;}
.meta-row{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);border-top:1px solid var(--line);padding-top:12px;margin-top:12px;}
.meta-row i{color:var(--primary);}
.empty-state{
  background:var(--glass);border:1px dashed var(--line-hi);border-radius:var(--r-card);
  padding:56px 28px;text-align:center;
}
.empty-state i{font-size:36px;color:var(--primary);display:block;margin-bottom:16px;}
.empty-state p{color:var(--text-2);margin-bottom:20px;}

/* ---------- FAQ ---------- */
.faq-acc .accordion-item{background:var(--glass);border:1px solid var(--line);border-radius:16px;margin-bottom:12px;overflow:hidden;}
.faq-acc .accordion-button{
  background:transparent;color:var(--text-1);font-size:17px;font-weight:600;line-height:1.6;
  padding:22px 26px;box-shadow:none;border-radius:16px;
}
.faq-acc .accordion-button:not(.collapsed){background:rgba(35,166,156,.07);color:var(--text-1);box-shadow:inset 2px 0 0 var(--primary);}
.faq-acc .accordion-button:focus{box-shadow:none;border-color:transparent;}
.faq-acc .accordion-button::after{
  content:"";width:14px;height:14px;flex:0 0 14px;margin-left:auto;
  background-image:linear-gradient(var(--primary),var(--primary)),linear-gradient(var(--primary),var(--primary));
  background-size:100% 2px,2px 100%;
  background-position:center,center;
  background-repeat:no-repeat;
  transition:transform .3s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(135deg);}
.faq-acc .accordion-body{color:var(--text-2);font-size:15px;line-height:1.85;padding:4px 26px 24px;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;border-radius:22px;overflow:hidden;border:1px solid var(--line-hi);
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:0 0 0 1px rgba(35,166,156,.22),0 24px 60px rgba(0,0,0,.55);
}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(6,18,26,.94),rgba(14,111,108,.62));}
.cta-band>*{position:relative;z-index:1;}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:10px;}
.cta-band p{color:#c3d8d7;max-width:620px;}

/* ---------- FOOTER ---------- */
.site-foot{background:var(--bg-1);position:relative;padding:72px 0 0;margin-top:0;}
.site-foot::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);opacity:.6;
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:52px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-brand .brand-mark{width:34px;height:34px;font-size:17px;}
.foot-brand .brand-text{font-size:17px;}
.foot-desc{font-size:14px;color:var(--text-3);line-height:1.8;max-width:340px;}
.foot-col h4{font-size:15px;font-weight:600;margin-bottom:18px;color:var(--text-1);}
.foot-col ul li{margin-bottom:11px;}
.foot-col ul a{font-size:14px;color:var(--text-2);}
.foot-col ul a:hover{color:var(--primary);}
.foot-contact li{font-size:14px;color:var(--text-2);margin-bottom:11px;display:flex;gap:8px;align-items:flex-start;}
.foot-contact i{color:var(--primary);margin-top:5px;}
.foot-bottom{border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3);}

/* ---------- RESPONSIVE ---------- */
@media (max-width:1199px){
  .head-nav a{padding:8px 10px;font-size:14px;}
  .hero-grid{gap:40px;}
}
@media (max-width:991px){
  .menu-btn{display:grid;}
  .head-nav{
    position:fixed;top:0;left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:6px;
    background:rgba(6,18,26,.97);
    backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    padding:96px 24px 32px;margin:0;
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .28s var(--ease),transform .28s var(--ease);
    overflow-y:auto;z-index:1001;
  }
  .head-nav.open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .head-nav a{font-size:17px;padding:14px 16px;border-radius:12px;min-height:44px;display:flex;align-items:center;}
  .head-nav a.active::after{display:none;}
  .head-nav a.active{background:rgba(35,166,156,.12);color:var(--text-1);}
  .head-drawer-cta{display:flex;flex-direction:column;gap:12px;margin-top:20px;padding-top:20px;border-top:1px solid var(--line);}
  .head-drawer-cta a{justify-content:center;}
  .hero{padding:130px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-panel{min-height:340px;}
  .trust-grid{grid-template-columns:repeat(2,1fr);}
  .trust-item:nth-child(2){border-right:none;}
  .trust-item:nth-child(1),.trust-item:nth-child(2){border-bottom:1px solid var(--line);}
  .feat-grid{grid-template-columns:1fr;}
  .feat-row3{grid-template-columns:repeat(2,1fr);}
  .scene-row{grid-template-columns:1fr;gap:26px;margin-bottom:60px;}
  .scene-row.rev .scene-media{order:0;}
  .case-main{grid-template-columns:1fr;}
  .case-main .case-img{min-height:240px;position:relative;}
  .case-grid{grid-template-columns:repeat(2,1fr);}
  .price-grid{grid-template-columns:1fr;}
  .price-card.featured{transform:none;}
  .price-card.featured:hover{transform:translateY(-4px);}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .sec{padding:72px 0;}
}
@media (max-width:767px){
  .container,.wrap{padding-left:18px;padding-right:18px;}
  .head-inner{gap:12px;}
  .brand-text{font-size:16px;}
  .icon-btn{display:none;}
  .trust-grid{grid-template-columns:1fr;}
  .trust-item{border-right:none;border-bottom:1px solid var(--line);padding:24px 20px;}
  .trust-item:last-child{border-bottom:none;}
  .feat-row3{grid-template-columns:1fr;}
  .case-grid{grid-template-columns:1fr;}
  .cta-band{padding:36px 24px;}
  .cta-band .btn-main{width:100%;justify-content:center;}
  .hero-cta .btn-main,.hero-cta .btn-ghost{width:100%;justify-content:center;}
  .foot-grid{grid-template-columns:1fr;}
  .price-card{padding:26px 22px;}
}
@media (max-width:575px){
  body{font-size:15px;}
  .sec{padding:56px 0;}
  .hero{padding:116px 0 56px;}
  .hero-trust{gap:10px 18px;}
  .panel-inner{padding:24px 20px;}
  .g-card{padding:22px;}
  .empty-state{padding:40px 20px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --bg-0:#06121A;
  --bg-1:#0A1E27;
  --bg-2:#0F2A33;
  --glass:rgba(255,255,255,.055);
  --glass-hi:rgba(255,255,255,.10);
  --line:rgba(122,224,214,.14);
  --line-hi:rgba(122,224,214,.34);
  --primary:#23A69C;
  --primary-deep:#0E6F6C;
  --primary-glow:rgba(35,166,156,.45);
  --accent:#F0A93B;
  --accent-glow:rgba(240,169,59,.36);
  --text-1:#E6F2F1;
  --text-2:#9CB5B6;
  --text-3:#6B8588;
  --ok:#46C08A;
  --err:#E5645B;
  --r-card:18px;
  --r-img:14px;
  --r-input:12px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .3s var(--ease),opacity .3s var(--ease)}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:.005em;line-height:1.28}
h1{font-size:clamp(34px,4.8vw,54px);line-height:1.15}
h2{font-size:clamp(26px,3.2vw,38px);line-height:1.25}
h3{font-size:clamp(20px,2vw,24px);line-height:1.4;font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;box-shadow:0 0 0 5px rgba(35,166,156,.28);border-radius:8px}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.wrap{max-width:1320px}}

/* ============ 导航 ============ */
.site-head{
  position:fixed;top:0;left:0;right:0;z-index:1200;
  background:rgba(6,18,26,.55);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),box-shadow .24s var(--ease),height .24s var(--ease);
}
.site-head.is-stuck{
  background:rgba(6,18,26,.94);
  box-shadow:0 12px 32px rgba(0,0,0,.5);
  border-bottom-color:var(--line-hi);
}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px;transition:height .24s var(--ease)}
.site-head.is-stuck .head-inner{height:62px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--primary),var(--primary-deep));
  color:#04171A;font-size:19px;
  box-shadow:0 0 0 1px rgba(35,166,156,.6),0 8px 22px var(--primary-glow);
}
.brand-text{font-size:18px;font-weight:700;color:var(--text-1);white-space:nowrap}
.head-nav{display:flex;align-items:center;gap:4px}
.head-nav > a{
  position:relative;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);
  transition:color .3s var(--ease),background .3s var(--ease);
}
.head-nav > a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),rgba(35,166,156,0));
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.head-nav > a:hover{color:var(--text-1);background:var(--glass)}
.head-nav > a.active{color:var(--text-1);background:var(--glass)}
.head-nav > a.active::after{transform:scaleX(1)}
.head-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.head-drawer-cta{display:none}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:transparent;border:1px solid var(--line);color:var(--text-2);
  font-size:17px;transition:all .3s var(--ease);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-hi);background:var(--glass-hi)}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  color:#03181A;font-weight:700;font-size:15px;line-height:1;
  box-shadow:0 0 0 1px rgba(35,166,156,.6),0 8px 28px var(--primary-glow);
  transition:transform .3s var(--ease),filter .3s var(--ease),box-shadow .3s var(--ease);
}
.btn-main:hover{color:#03181A;filter:brightness(1.1);transform:translateY(-2px)}
.btn-main:active{transform:translateY(1px)}
.btn-main.sm{padding:11px 20px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:12px;border:1px solid var(--line);
  background:var(--glass);color:var(--text-1);font-weight:600;font-size:15px;line-height:1;
  transition:all .3s var(--ease);
}
.btn-ghost:hover{color:var(--text-1);background:var(--glass-hi);border-color:var(--line-hi);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:8px;color:var(--primary);
  font-weight:600;font-size:15px;
}
.btn-link-arrow i{transition:transform .3s var(--ease)}
.btn-link-arrow:hover i{transform:translateX(4px)}
.menu-btn{
  display:none;width:42px;height:42px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);font-size:20px;
  place-items:center;
}

/* ============ 通用 ============ */
.section{padding:100px 0;position:relative}
.section-tight{padding:72px 0}
.sec-head{max-width:760px;margin-bottom:52px}
.sec-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;color:var(--primary);letter-spacing:.02em;margin-bottom:14px;
}
.sec-head p{color:var(--text-2);font-size:16px;margin-top:16px;max-width:720px}
.card-glass{
  position:relative;border-radius:var(--r-card);
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:transform .3s var(--ease),border-color .3s var(--ease),background .3s var(--ease);
}
.card-glass::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;border-radius:var(--r-card) var(--r-card) 0 0;
  background:linear-gradient(90deg,rgba(255,255,255,.42),rgba(255,255,255,0) 40%);
  pointer-events:none;
}
.card-glass:hover{transform:translateY(-4px);border-color:var(--line-hi)}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:12.5px;font-weight:600;line-height:1.6;
  background:rgba(35,166,156,.12);color:#7ADED6;border:1px solid rgba(35,166,156,.32);
}
.badge-pill.amber{background:rgba(240,169,59,.12);color:#F5C173;border-color:rgba(240,169,59,.34)}
.thumb{
  border-radius:var(--r-img);overflow:hidden;background:var(--bg-2);
  border:1px solid var(--line);aspect-ratio:16/9;
}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.card-glass:hover .thumb img{transform:scale(1.04)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--text-3);margin-bottom:22px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{opacity:.55}
.crumb .now{color:var(--text-2)}
.point-list li{
  position:relative;padding-left:20px;color:var(--text-2);font-size:15.5px;margin-bottom:10px;
}
.point-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px var(--primary-glow);
}
.glow-spot{position:absolute;pointer-events:none;border-radius:50%;filter:blur(60px);opacity:.7}

/* ============ 分类 Hero ============ */
.cat-hero{position:relative;padding:158px 0 84px;overflow:hidden;isolation:isolate}
.cat-hero .hero-bg{position:absolute;inset:0;z-index:-2}
.cat-hero .hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.5}
.cat-hero .hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(6,18,26,.86) 0%,rgba(6,18,26,.9) 45%,rgba(6,18,26,.98) 100%),
    linear-gradient(90deg,rgba(6,18,26,.96) 0%,rgba(6,18,26,.5) 60%,rgba(6,18,26,.85) 100%);
}
.cat-hero .hero-grid{
  position:absolute;inset:0;z-index:-1;opacity:.35;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse at 70% 20%,#000 0%,transparent 72%);
  mask-image:radial-gradient(ellipse at 70% 20%,#000 0%,transparent 72%);
}
.cat-hero h1{margin:18px 0 20px;max-width:860px}
.cat-hero h1 .hl{color:var(--primary);}
.cat-hero .lead{color:var(--text-2);font-size:17px;max-width:700px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-facts{display:flex;flex-wrap:wrap;gap:28px;margin-top:40px;padding-top:26px;border-top:1px solid var(--line)}
.hero-facts .fact{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text-3)}
.hero-facts .fact i{color:var(--primary);font-size:16px}
.hero-facts .fact b{color:var(--text-1);font-weight:600}

/* ============ 交替图文 ============ */
.rows{display:grid;gap:76px}
.row-item{display:grid;grid-template-columns:1.04fr .96fr;gap:48px;align-items:center}
.row-item.rev .row-media{order:2}
.row-media{position:relative}
.row-media .thumb{aspect-ratio:16/9;box-shadow:var(--shadow-card)}
.row-media .float-tag{
  position:absolute;left:18px;bottom:18px;
  background:rgba(6,18,26,.88);border:1px solid var(--line-hi);
  border-radius:999px;padding:7px 15px;font-size:13px;color:var(--text-1);
  display:inline-flex;align-items:center;gap:8px;
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.row-media .float-tag i{color:var(--primary)}
.row-body h3{margin:14px 0 16px}
.row-body p{color:var(--text-2);max-width:640px}
.row-body .point-list{margin-top:20px}
.row-body .btn-link-arrow{margin-top:22px}
.row-index{
  font-variant-numeric:tabular-nums;font-size:13px;color:var(--text-3);letter-spacing:.12em;font-weight:600;
}

/* ============ 时间轴 ============ */
.tl-wrap{display:grid;grid-template-columns:.92fr 1.08fr;gap:56px;align-items:start}
.tl-side h2{margin-bottom:18px}
.tl-side p{color:var(--text-2)}
.tl-side .side-note{
  margin-top:26px;padding:20px 22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  color:var(--text-2);font-size:14.5px;
}
.tl-side .side-note b{color:var(--text-1);display:block;margin-bottom:6px;font-size:15px}
.timeline{position:relative;padding-left:38px;margin-top:6px}
.timeline::before{
  content:"";position:absolute;left:11px;top:8px;bottom:10px;width:1px;
  background:linear-gradient(180deg,var(--line-hi),rgba(122,224,214,.05));
}
.tl-item{position:relative;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-38px;top:3px;width:23px;height:23px;border-radius:50%;
  background:var(--bg-1);border:1px solid var(--line-hi);
  box-shadow:0 0 0 4px rgba(35,166,156,.08);
  transition:all .3s var(--ease);
}
.tl-item.is-now::before{
  background:var(--accent);border-color:var(--accent);
  box-shadow:0 0 0 5px var(--accent-glow);
}
.tl-item h4{font-size:17px;font-weight:600;margin-bottom:6px;display:flex;align-items:center;gap:10px}
.tl-item p{color:var(--text-2);font-size:15px;max-width:560px}
.tl-step{
  font-variant-numeric:tabular-nums;font-size:12.5px;color:var(--text-3);
  border:1px solid var(--line);border-radius:999px;padding:1px 10px;font-weight:600;
}
.tl-item.is-now .tl-step{color:#F5C173;border-color:rgba(240,169,59,.4)}

/* ============ FAQ ============ */
.faq{max-width:920px;margin:0 auto}
.accordion-item{
  background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;
}
.accordion-item:first-of-type{border-top:1px solid var(--line)}
.accordion-button{
  position:relative;background:transparent;color:var(--text-1);
  font-size:17px;font-weight:600;line-height:1.6;
  padding:22px 56px 22px 20px;min-height:56px;border-radius:12px;
  box-shadow:none;transition:background .3s var(--ease),color .3s var(--ease);
}
.accordion-button::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:2px;border-radius:2px;
  background:var(--primary);opacity:0;transition:opacity .3s var(--ease);
}
.accordion-button::after{
  width:1.05rem;height:1.05rem;background-size:1.05rem;background-position:center;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2323A69C'%3E%3Cpath d='M8 3.5a.5.5 0 0 1 .5.5v3.5H12a.5.5 0 0 1 0 1H8.5V12a.5.5 0 0 1-1 0V8.5H4a.5.5 0 0 1 0-1h3.5V4a.5.5 0 0 1 .5-.5z'/%3E%3C/svg%3E");
  transition:transform .3s var(--ease);
}
.accordion-button:not(.collapsed){
  background:var(--glass-hi);color:var(--text-1);box-shadow:none;
}
.accordion-button:not(.collapsed)::before{opacity:1}
.accordion-button:not(.collapsed)::after{
  transform:rotate(180deg);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23F0A93B'%3E%3Cpath d='M4 7.5h8a.5.5 0 0 1 0 1H4a.5.5 0 0 1 0-1z'/%3E%3C/svg%3E");
}
.accordion-button:hover{background:var(--glass)}
.accordion-button:focus{box-shadow:none;border-color:transparent}
.accordion-body{
  padding:2px 24px 26px 20px;color:var(--text-2);font-size:15.5px;line-height:1.85;
}
.accordion-body p+p{margin-top:12px}
.accordion-body .mini-link{color:var(--primary);font-weight:600}
.accordion-body .mini-link:hover{color:#7ADED6}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  padding:54px 56px;display:flex;align-items:center;justify-content:space-between;gap:36px;
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line-hi);
  box-shadow:0 0 0 1px rgba(35,166,156,.12),0 24px 60px rgba(0,0,0,.5);
}
.cta-band .band-bg{position:absolute;inset:0;z-index:-1;opacity:.22}
.cta-band .band-bg img{width:100%;height:100%;object-fit:cover}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-90px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(35,166,156,.28),transparent 70%);pointer-events:none;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:12px}
.cta-band p{color:var(--text-2);max-width:600px}
.cta-band .band-actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto}

/* ============ 页脚 ============ */
.site-foot{margin-top:40px;border-top:1px solid transparent;position:relative;background:var(--bg-1)}
.site-foot::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(122,224,214,.55),transparent);
}
.site-foot .foot-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;padding:70px 0 46px;
}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.foot-desc{color:var(--text-2);font-size:14.5px;max-width:340px}
.foot-col h4{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:18px}
.foot-col ul li{margin-bottom:11px}
.foot-col ul li a{color:var(--text-2);font-size:14.5px}
.foot-col ul li a:hover{color:var(--primary)}
.foot-contact li{display:flex;align-items:flex-start;gap:10px;color:var(--text-2);font-size:14.5px}
.foot-contact li i{color:var(--primary);font-size:15px;margin-top:4px}
.foot-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  padding:22px 0 34px;border-top:1px solid var(--line);color:var(--text-3);font-size:13.5px;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .section{padding:88px 0}
}
@media (max-width:991px){
  .head-nav{
    position:fixed;top:76px;left:0;right:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:6px;
    padding:24px;background:rgba(6,18,26,.97);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    border-top:1px solid var(--line);
    overflow-y:auto;transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .24s var(--ease),transform .24s var(--ease);
  }
  .head-nav.open{opacity:1;transform:translateY(0);pointer-events:auto}
  .head-nav > a{padding:14px 16px;font-size:16.5px;min-height:44px;display:flex;align-items:center}
  .head-nav > a::after{bottom:8px;left:16px;right:16px}
  .head-drawer-cta{display:flex;flex-direction:column;gap:12px;margin-top:20px;padding-top:22px;border-top:1px solid var(--line)}
  .head-drawer-cta .btn-main,.head-drawer-cta .btn-ghost{width:100%}
  .head-actions .btn-main{display:none}
  .menu-btn{display:grid}
  .cat-hero{padding:132px 0 68px}
  .row-item{grid-template-columns:1fr;gap:30px}
  .row-item.rev .row-media{order:0}
  .tl-wrap{grid-template-columns:1fr;gap:40px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:44px 34px}
  .site-foot .foot-grid{grid-template-columns:1fr 1fr;gap:36px;padding:56px 0 38px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .section{padding:64px 0}
  .section-tight{padding:56px 0}
  .wrap{padding:0 18px}
  .cat-hero{padding:120px 0 58px}
  .cat-hero .lead{font-size:16px}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
  .hero-facts{gap:18px;flex-direction:column}
  .rows{gap:58px}
  .timeline{padding-left:32px}
  .tl-item::before{left:-32px;width:21px;height:21px}
  .timeline::before{left:10px}
  .cta-band{padding:34px 24px}
  .cta-band .band-actions{width:100%;flex-direction:column}
  .cta-band .band-actions .btn-main,.cta-band .band-actions .btn-ghost{width:100%}
  .accordion-button{font-size:16px;padding:18px 48px 18px 16px}
  .accordion-body{padding:2px 18px 22px 16px}
  .site-foot .foot-grid{grid-template-columns:1fr;gap:30px;padding:48px 0 30px}
  .foot-bottom{flex-direction:column;gap:8px}
}
@media (max-width:575px){
  .brand-text{font-size:16px}
  .head-actions{gap:8px}
  .icon-btn{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg-0:#06121A; --bg-1:#0A1E27; --bg-2:#0F2A33;
  --glass:rgba(255,255,255,.055); --glass-hi:rgba(255,255,255,.10);
  --line:rgba(122,224,214,.14); --line-hi:rgba(122,224,214,.34);
  --primary:#23A69C; --primary-deep:#0E6F6C; --primary-glow:rgba(35,166,156,.45);
  --accent:#F0A93B; --accent-glow:rgba(240,169,59,.36);
  --text-1:#E6F2F1; --text-2:#9CB5B6; --text-3:#6B8588;
  --ok:#46C08A; --err:#E5645B;
  --r-card:18px; --r-media:14px; --r-input:12px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --head-h:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(600px 380px at 12% 6%,rgba(35,166,156,.08),transparent 70%),
    radial-gradient(560px 420px at 88% 30%,rgba(35,166,156,.06),transparent 72%),
    radial-gradient(700px 460px at 50% 96%,rgba(240,169,59,.05),transparent 75%);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
p{margin:0 0 20px}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.005em}
ul,ol{margin:0;padding:0;list-style:none}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
::selection{background:rgba(35,166,156,.35);color:#fff}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(35,166,156,.5);border-radius:6px}

/* ---------- header ---------- */
.site-head{
  position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--head-h);
  display:flex;align-items:center;
  background:rgba(6,18,26,.55);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-head.is-stuck{height:62px;background:rgba(6,18,26,.94);box-shadow:0 12px 32px rgba(0,0,0,.5)}
.head-inner{display:flex;align-items:center;gap:18px;width:100%}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--text-1);flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(145deg,rgba(35,166,156,.30),rgba(35,166,156,.06));
  border:1px solid var(--line-hi);color:var(--primary);font-size:16px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.14);
}
.brand-text{white-space:nowrap}
.head-nav{display:flex;align-items:center;gap:2px;margin:0 auto}
.head-nav > a{
  position:relative;padding:9px 14px;border-radius:999px;font-size:14.5px;color:var(--text-2);
  transition:color .24s var(--ease),background .24s var(--ease);white-space:nowrap;
}
.head-nav > a:hover{color:var(--text-1);background:var(--glass)}
.head-nav > a.active{color:var(--text-1)}
.head-nav > a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),rgba(35,166,156,0));
}
.head-drawer-cta{display:none}
.head-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);cursor:pointer;
  transition:all .24s var(--ease);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-hi);background:var(--glass-hi)}
.menu-btn{
  display:none;width:40px;height:40px;border-radius:12px;place-items:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);cursor:pointer;
}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:0;cursor:pointer;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04201F;font-weight:700;font-size:15px;line-height:1;
  box-shadow:0 0 0 1px rgba(35,166,156,.6),0 8px 28px var(--primary-glow);
  transition:transform .24s var(--ease),filter .24s var(--ease),box-shadow .24s var(--ease);
  white-space:nowrap;
}
.btn-main:hover{filter:brightness(1.08);transform:translateY(-2px)}
.btn-main:active{transform:translateY(1px)}
.btn-main.sm{padding:10px 20px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:12px;cursor:pointer;
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);
  font-size:14.5px;font-weight:600;line-height:1;
  transition:all .24s var(--ease);
}
.btn-ghost:hover{background:var(--glass-hi);border-color:var(--line-hi);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-size:14px;font-weight:600}
.btn-text i{transition:transform .3s var(--ease)}
.btn-text:hover i{transform:translateX(4px)}

/* ---------- badges / crumb ---------- */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:12.5px;line-height:1.5;font-weight:600;
  background:rgba(35,166,156,.12);color:var(--primary);border:1px solid rgba(35,166,156,.32);
}
.badge-accent{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:12.5px;line-height:1.5;font-weight:600;
  background:rgba(240,169,59,.12);color:var(--accent);border:1px solid rgba(240,169,59,.34);
}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13.5px;color:var(--text-3);margin-bottom:20px}
.crumb a{color:var(--text-3);transition:color .24s var(--ease)}
.crumb a:hover{color:var(--primary)}
.crumb i{font-size:11px;opacity:.7}
.crumb .now{color:var(--text-2);max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article head ---------- */
.art-head{
  position:relative;
  padding:calc(var(--head-h) + 46px) 0 48px;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.art-head::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,18,26,.95) 0%,rgba(6,18,26,.86) 42%,rgba(6,18,26,.97) 100%);
}
.art-head .wrap{max-width:1240px}
.art-head h1{
  font-size:clamp(28px,3.6vw,44px);line-height:1.25;font-weight:700;
  max-width:900px;margin:16px 0 20px;color:var(--text-1);
}
.art-meta{display:flex;align-items:center;flex-wrap:wrap;gap:14px;font-size:13.5px;color:var(--text-3)}
.art-meta .sep{width:1px;height:14px;background:var(--line-hi)}
.art-meta span{display:inline-flex;align-items:center;gap:6px}
.art-meta i{color:var(--primary);font-size:13px}

/* ---------- layout ---------- */
.art-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:52px;
  padding-top:56px;padding-bottom:96px;align-items:start;
}
.art-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.glass-card{
  position:relative;border-radius:var(--r-card);padding:26px;
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  transition:transform .3s var(--ease),border-color .3s var(--ease);
}
.glass-card::before{
  content:"";position:absolute;left:1px;right:1px;top:0;height:1px;border-radius:var(--r-card);
  background:linear-gradient(90deg,rgba(255,255,255,.35),rgba(255,255,255,0) 40%);
}
.glass-card:hover{transform:translateY(-4px);border-color:var(--line-hi)}
.side-card h3{font-size:16px;color:var(--text-1);margin-bottom:8px}
.side-card p{font-size:13.5px;color:var(--text-3);line-height:1.75;margin:0 0 16px}
.side-list{display:flex;flex-direction:column;gap:2px;margin-bottom:18px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:10px 12px;border-radius:10px;font-size:14px;color:var(--text-2);
  transition:all .24s var(--ease);
}
.side-list a:hover{background:var(--glass-hi);color:var(--text-1)}
.side-list a i{color:var(--primary);font-size:12px}
.side-tip{
  display:flex;gap:10px;align-items:flex-start;padding:14px;border-radius:12px;
  background:rgba(240,169,59,.08);border:1px solid rgba(240,169,59,.24);
  font-size:13px;color:var(--text-2);line-height:1.7;
}
.side-tip i{color:var(--accent);font-size:15px;margin-top:2px}

/* ---------- article body ---------- */
.article-body{max-width:780px;font-size:16.5px;line-height:1.9;color:var(--text-2);word-wrap:break-word}
.article-body > *:first-child{margin-top:0}
.article-body > *:last-child{margin-bottom:0}
.article-body p{margin:0 0 20px}
.article-body > p:first-of-type{
  padding-left:18px;border-left:3px solid var(--primary);
  color:var(--text-1);font-size:17.5px;line-height:1.85;
}
.article-body h2{
  position:relative;margin:52px 0 20px;padding-left:18px;
  font-size:clamp(21px,2.2vw,26px);line-height:1.4;font-weight:700;color:var(--text-1);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.26em;width:4px;height:1em;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--primary-deep));
}
.article-body h3{margin:34px 0 14px;font-size:19px;font-weight:600;color:var(--text-1)}
.article-body h4{margin:26px 0 12px;font-size:17px;font-weight:600;color:var(--text-1)}
.article-body strong{color:var(--text-1);font-weight:600}
.article-body ul,.article-body ol{margin:0 0 22px}
.article-body li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul > li::before{
  content:"";position:absolute;left:0;top:.76em;width:7px;height:7px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 8px var(--primary-glow);
}
.article-body ol{counter-reset:artnum}
.article-body ol > li{counter-increment:artnum;padding-left:32px}
.article-body ol > li::before{
  content:counter(artnum);position:absolute;left:0;top:.28em;width:21px;height:21px;
  display:grid;place-items:center;border-radius:6px;font-size:12px;font-weight:700;
  background:rgba(35,166,156,.14);border:1px solid var(--line);color:var(--primary);
}
.article-body blockquote{
  margin:26px 0;padding:20px 24px;border-radius:0 var(--r-media) var(--r-media) 0;
  border-left:3px solid var(--primary);background:var(--glass);color:var(--text-1);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{
  border-radius:var(--r-media);border:1px solid var(--line);margin:26px auto;
  box-shadow:0 18px 40px rgba(0,0,0,.4);
}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(35,166,156,.4);transition:all .24s var(--ease)}
.article-body a:hover{color:#5FD6CB;border-bottom-color:#5FD6CB}
.article-body table{
  width:100%;border-collapse:separate;border-spacing:0;margin:26px 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:var(--r-media);overflow:hidden;
}
.article-body thead th{
  background:rgba(35,166,156,.14);color:var(--text-1);font-weight:600;text-align:left;
}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);color:var(--text-2)}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body tbody tr{transition:background .24s var(--ease)}
.article-body tbody tr:hover{background:var(--glass)}
.article-body hr{border:0;height:1px;background:linear-gradient(90deg,var(--line-hi),rgba(122,224,214,0));margin:40px 0}
.article-body code{
  padding:2px 7px;border-radius:6px;background:rgba(35,166,156,.12);
  border:1px solid var(--line);color:#7FE3D8;font-size:.92em;
}

/* ---------- empty state ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
  padding:56px 28px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.empty-state .ic{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;font-size:24px;
  background:rgba(35,166,156,.12);border:1px solid var(--line-hi);color:var(--primary);
}
.empty-state h2{font-size:20px;color:var(--text-1)}
.empty-state p{font-size:14.5px;color:var(--text-3);max-width:420px;margin:0}

/* ---------- tags / related ---------- */
.art-foot{margin-top:48px;padding-top:32px;border-top:1px solid var(--line);max-width:780px}
.tag-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:34px}
.tag-row .label{font-size:13.5px;color:var(--text-3);margin-right:2px}
.sect-title{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}
.sect-title h2{font-size:clamp(20px,2vw,24px);color:var(--text-1)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rcard{
  position:relative;overflow:hidden;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.rcard::before{
  content:"";position:absolute;left:1px;right:1px;top:0;height:1px;z-index:2;
  background:linear-gradient(90deg,rgba(255,255,255,.35),rgba(255,255,255,0) 40%);
}
.rcard:hover{transform:translateY(-4px);border-color:var(--line-hi);box-shadow:var(--shadow-card)}
.rcard-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.rcard-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.rcard:hover .rcard-media img{transform:scale(1.04)}
.rcard-body{padding:18px 20px 20px}
.rcard-body h3{font-size:16px;line-height:1.5;color:var(--text-1);margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rcard-body p{font-size:13.5px;line-height:1.75;color:var(--text-3);margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.rcard-meta{display:flex;align-items:center;justify-content:space-between;margin-top:16px;font-size:13px;color:var(--text-3)}
.rcard-meta i{color:var(--primary);transition:transform .3s var(--ease)}
.rcard:hover .rcard-meta i{transform:translateX(4px)}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;margin:0 0 96px;
}
.cta-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:36px;
  padding:44px 48px;border-radius:22px;overflow:hidden;
  border:1px solid var(--line-hi);
  background-image:url(/assets/images/backpic/back-3.png);
  background-size:cover;background-position:center;
  box-shadow:0 0 0 1px rgba(35,166,156,.18),0 24px 60px rgba(0,0,0,.5);
}
.cta-inner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(6,18,26,.95),rgba(10,30,39,.82));
}
.cta-text{position:relative;z-index:2;max-width:620px}
.cta-text h2{font-size:clamp(22px,2.4vw,30px);color:var(--text-1);margin-bottom:10px}
.cta-text p{font-size:14.5px;color:var(--text-2);margin:0;line-height:1.8}
.cta-btns{position:relative;z-index:2;display:flex;gap:12px;flex:0 0 auto}

/* ---------- footer ---------- */
.site-foot{
  position:relative;background:var(--bg-1);border-top:1px solid var(--line);
  padding:68px 0 28px;z-index:1;
}
.site-foot::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,rgba(35,166,156,0),rgba(35,166,156,.75),rgba(35,166,156,0));
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:44px;border-bottom:1px solid var(--line)}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--text-1);margin-bottom:16px}
.foot-desc{font-size:13.5px;line-height:1.85;color:var(--text-3);margin:0;max-width:340px}
.foot-col h4{font-size:15px;color:var(--text-1);margin-bottom:18px;font-weight:600}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col ul a{font-size:13.5px;color:var(--text-3);transition:color .24s var(--ease),padding .24s var(--ease)}
.foot-col ul a:hover{color:var(--primary);padding-left:3px}
.foot-contact li{display:flex;align-items:flex-start;gap:9px;font-size:13.5px;color:var(--text-3);line-height:1.7}
.foot-contact i{color:var(--primary);font-size:14px;margin-top:3px}
.foot-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:24px;font-size:13px;color:var(--text-3)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .art-layout{grid-template-columns:minmax(0,1fr) 280px;gap:36px}
}
@media (max-width:991px){
  :root{--head-h:64px}
  .site-head.is-stuck{height:64px}
  .head-nav{
    position:fixed;top:64px;left:0;right:0;bottom:0;margin:0;
    flex-direction:column;align-items:stretch;gap:4px;padding:22px 24px 40px;
    background:rgba(6,18,26,.97);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    transform:translateY(-10px);opacity:0;visibility:hidden;
    transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s;
    overflow-y:auto;z-index:999;
  }
  .head-nav.is-open{transform:none;opacity:1;visibility:visible}
  .head-nav > a{height:48px;display:flex;align-items:center;padding:0 16px;border-radius:12px;font-size:16px}
  .head-nav > a.active{background:var(--glass);color:var(--text-1)}
  .head-nav > a.active::after{display:none}
  .head-drawer-cta{display:flex;flex-direction:column;gap:12px;margin-top:20px;padding-top:20px;border-top:1px solid var(--line)}
  .head-drawer-cta .btn-main,.head-drawer-cta .btn-ghost{width:100%;padding:14px 20px}
  .head-actions .btn-main{display:none}
  .menu-btn{display:grid}
  .art-layout{grid-template-columns:1fr;gap:36px;padding-top:40px;padding-bottom:64px}
  .art-side{position:static}
  .article-body{max-width:100%}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:36px 30px}
  .cta-btns{width:100%}
  .cta-btns a{flex:1}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .wrap{padding:0 18px}
  .art-head{padding:calc(var(--head-h) + 34px) 0 36px}
  .art-head h1{font-size:clamp(25px,6.4vw,32px)}
  .art-meta{gap:10px;font-size:13px}
  .art-meta .sep{display:none}
  .art-layout{padding-top:34px;padding-bottom:56px}
  .glass-card{padding:22px}
  .article-body{font-size:16px;line-height:1.88}
  .article-body h2{margin:40px 0 16px}
  .article-body > p:first-of-type{font-size:16.5px}
  .rs{display:none}
  .related-grid{grid-template-columns:1fr}
  .cta-band{margin-bottom:64px}
  .cta-btns{flex-direction:column}
  .cta-btns a{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:30px;padding-bottom:32px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:575px){
  .wrap{padding:0 16px}
  .brand-text{font-size:16px}
  .article-body table{font-size:13.5px}
  .article-body th,.article-body td{padding:10px 12px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --bg-0:#06121A; --bg-1:#0A1E27; --bg-2:#0F2A33;
  --glass:rgba(255,255,255,.055); --glass-hi:rgba(255,255,255,.10);
  --line:rgba(122,224,214,.14); --line-hi:rgba(122,224,214,.34);
  --primary:#23A69C; --primary-deep:#0E6F6C; --primary-glow:rgba(35,166,156,.45);
  --accent:#F0A93B; --accent-glow:rgba(240,169,59,.36);
  --text-1:#E6F2F1; --text-2:#9CB5B6; --text-3:#6B8588;
  --ok:#46C08A; --err:#E5645B;
  --r-card:18px; --r-img:14px; --r-btn:12px;
  --shadow:0 18px 40px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.85;
  color:var(--text-1);background:var(--bg-0);
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .3s var(--ease)}
a:hover{color:var(--primary)}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.005em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:none;box-shadow:0 0 0 3px var(--primary-glow);border-radius:8px}
::selection{background:rgba(35,166,156,.35);color:#fff}

.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.wrap{max-width:1320px}}

/* ============ 导航 ============ */
.site-head{
  position:fixed;top:0;left:0;right:0;z-index:1030;
  background:rgba(6,18,26,.42);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .24s var(--ease),height .24s var(--ease),box-shadow .24s var(--ease);
}
.site-head.is-stuck{background:rgba(6,18,26,.94);box-shadow:0 12px 32px rgba(0,0,0,.5)}
.head-inner{display:flex;align-items:center;gap:28px;height:76px;transition:height .24s var(--ease)}
.site-head.is-stuck .head-inner{height:62px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(35,166,156,.34),rgba(35,166,156,.08));
  border:1px solid var(--line-hi);color:var(--primary);font-size:17px;
  box-shadow:0 0 18px rgba(35,166,156,.22);
}
.brand-text{font-size:17px;font-weight:700;color:var(--text-1);white-space:nowrap}
.head-nav{display:flex;align-items:center;gap:6px;margin-left:auto}
.head-nav > a{
  position:relative;padding:9px 14px;border-radius:10px;font-size:15px;
  color:var(--text-2);white-space:nowrap;transition:color .3s var(--ease),background .3s var(--ease);
}
.head-nav > a:hover{color:var(--text-1);background:var(--glass)}
.head-nav > a.active{color:var(--text-1)}
.head-nav > a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--primary);box-shadow:0 0 12px var(--primary-glow);
}
.head-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--text-2);background:var(--glass);
  transition:all .3s var(--ease);
}
.icon-btn:hover{color:var(--text-1);border-color:var(--line-hi);background:var(--glass-hi)}
.menu-btn{
  width:44px;height:44px;border-radius:12px;display:none;place-items:center;
  border:1px solid var(--line);color:var(--text-1);background:var(--glass);font-size:22px;
}
.head-drawer-cta{display:none;flex-direction:column;gap:12px;margin-top:18px;padding-top:18px;border-top:1px solid var(--line)}

.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
  color:#04191A;background:linear-gradient(135deg,#3FD0C4,var(--primary));
  box-shadow:0 0 0 1px rgba(35,166,156,.6),0 8px 28px var(--primary-glow);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),filter .3s var(--ease);
  white-space:nowrap;
}
.btn-main:hover{color:#04191A;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(35,166,156,.8),0 14px 34px var(--primary-glow)}
.btn-main:active{transform:translateY(1px)}
.btn-main.sm{padding:10px 20px;font-size:14px}
.btn-main.amber{background:linear-gradient(135deg,#FFC971,var(--accent));box-shadow:0 0 0 1px rgba(240,169,59,.6),0 8px 28px var(--accent-glow)}
.btn-main.amber:hover{color:#1D1102;box-shadow:0 0 0 1px rgba(240,169,59,.85),0 14px 34px var(--accent-glow)}

.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--r-btn);font-size:15px;font-weight:500;
  color:var(--text-1);border:1px solid var(--line);background:var(--glass);
  transition:all .3s var(--ease);white-space:nowrap;
}
.btn-ghost:hover{background:var(--glass-hi);border-color:var(--line-hi);color:var(--text-1);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}

.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--primary)}
.link-more i{transition:transform .3s var(--ease)}
.link-more:hover{color:#4FD8CC}
.link-more:hover i{transform:translateX(4px)}

/* ============ 通用区块 ============ */
.section{padding:110px 0;position:relative}
.section.tight{padding:84px 0}
.bg-1{background:var(--bg-1)}
.glow-a::before,.glow-b::before{
  content:"";position:absolute;pointer-events:none;border-radius:50%;
}
.glow-a::before{width:620px;height:620px;top:-220px;left:-160px;background:radial-gradient(circle,rgba(35,166,156,.08),transparent 68%)}
.glow-b::before{width:560px;height:560px;bottom:-200px;right:-140px;background:radial-gradient(circle,rgba(35,166,156,.06),transparent 68%)}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.02em;color:var(--primary);
  background:rgba(35,166,156,.10);border:1px solid rgba(35,166,156,.28);margin-bottom:18px;
}
.eyebrow.amber{color:var(--accent);background:rgba(240,169,59,.10);border-color:rgba(240,169,59,.30)}
h2.sec-title{font-size:clamp(26px,3.2vw,38px);line-height:1.25}
p.sec-sub{margin-top:16px;color:var(--text-2);font-size:16px;line-height:1.85;max-width:760px}
.center p.sec-sub{margin-left:auto;margin-right:auto}

/* ============ 面包屑 ============ */
.crumb-bar{padding:104px 0 0;background:var(--bg-0)}
.crumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--text-3);flex-wrap:wrap}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--primary)}
.crumb i{font-size:11px;color:var(--text-3);opacity:.7}
.crumb .now{color:var(--text-2)}

/* ============ 分类小 Hero ============ */
.cat-hero{
  position:relative;margin-top:22px;border-radius:22px;overflow:hidden;
  border:1px solid var(--line);background:var(--bg-2);
  box-shadow:var(--shadow);
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.55;
}
.cat-hero-mask{
  position:absolute;inset:0;
  background:
    linear-gradient(120deg,rgba(6,18,26,.94) 0%,rgba(6,18,26,.78) 46%,rgba(6,18,26,.52) 100%),
    linear-gradient(0deg,rgba(6,18,26,.72),rgba(6,18,26,.72));
}
.cat-hero-grid{
  position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(122,224,214,.08) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(122,224,214,.08) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(120deg,#000 12%,transparent 72%);
  -webkit-mask-image:linear-gradient(120deg,#000 12%,transparent 72%);
}
.cat-hero-inner{position:relative;padding:64px 56px;max-width:820px}
.cat-hero h1{font-size:clamp(30px,4.2vw,46px);line-height:1.18;margin-top:16px}
.cat-hero h1 em{font-style:normal;color:var(--primary)}
.cat-hero p.lead{margin-top:20px;font-size:16.5px;line-height:1.85;color:var(--text-2);max-width:660px}
.cat-hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}

.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:12.5px;font-weight:500;
  color:var(--primary);background:rgba(35,166,156,.10);border:1px solid rgba(35,166,156,.28);
}
.badge-pill.amber{color:var(--accent);background:rgba(240,169,59,.10);border-color:rgba(240,169,59,.30)}
.badge-pill.plain{color:var(--text-2);background:var(--glass);border-color:var(--line)}

/* ============ 玻璃卡片 ============ */
.glass-card{
  position:relative;border-radius:var(--r-card);
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
  overflow:hidden;
}
.glass-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.42),rgba(255,255,255,0) 40%);
}
.glass-card:hover{transform:translateY(-4px);border-color:var(--line-hi)}

/* ============ 矩阵卡 ============ */
.matrix{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start}
.m-card{grid-column:span 4;padding:28px;display:flex;flex-direction:column;gap:14px}
.m-card.c8{grid-column:span 8}
.m-card.c6{grid-column:span 6}
.m-card.c4{grid-column:span 4}
.m-ico{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  font-size:21px;color:var(--primary);
  background:linear-gradient(150deg,rgba(35,166,156,.20),rgba(35,166,156,.04));
  border:1px solid var(--line-hi);
}
.m-card h3{font-size:20px;line-height:1.4}
.m-card p{color:var(--text-2);font-size:15px;line-height:1.85}
.m-card .m-foot{margin-top:auto;padding-top:6px}
.m-list{display:flex;flex-direction:column;gap:8px;margin-top:2px}
.m-list li{display:flex;gap:9px;font-size:14.5px;color:var(--text-2);line-height:1.7}
.m-list li::before{
  content:"";flex:0 0 auto;width:6px;height:6px;border-radius:2px;
  background:var(--primary);margin-top:9px;box-shadow:0 0 8px rgba(35,166,156,.5);
}
.m-figure{margin:0;border-radius:var(--r-img);overflow:hidden;position:relative}
.m-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s var(--ease)}
.m-card:hover .m-figure img{transform:scale(1.04)}
.m-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,18,26,.12),rgba(6,18,26,.55));
}
.m-card.c8 .m-split{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center}

/* ============ 对照表 ============ */
.cmp-wrap{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  background:rgba(15,42,51,.55);box-shadow:var(--shadow);
}
.cmp-scroll{overflow-x:auto}
table.cmp{width:100%;min-width:780px;border-collapse:collapse;font-size:15px}
table.cmp thead th{
  padding:18px 22px;text-align:left;font-weight:600;color:var(--text-1);font-size:15px;
  background:linear-gradient(180deg,rgba(35,166,156,.18),rgba(35,166,156,.05));
  border-bottom:1px solid var(--line-hi);white-space:nowrap;
}
table.cmp thead th.hl{color:var(--accent);background:linear-gradient(180deg,rgba(240,169,59,.16),rgba(240,169,59,.04))}
table.cmp tbody td{
  padding:16px 22px;color:var(--text-2);border-bottom:1px solid rgba(122,224,214,.08);
  vertical-align:top;line-height:1.75;
}
table.cmp tbody td:first-child{color:var(--text-1);font-weight:500;white-space:nowrap}
table.cmp tbody tr{transition:background .3s var(--ease)}
table.cmp tbody tr:hover{background:var(--glass-hi)}
table.cmp tbody tr:last-child td{border-bottom:0}
.tick{display:inline-flex;align-items:center;gap:7px;color:var(--text-2)}
.tick i{color:var(--ok);font-size:14px}
.tick.part i{color:var(--accent)}
.tick.no i{color:var(--text-3)}
.cmp-note{margin-top:16px;font-size:13.5px;color:var(--text-3);display:flex;align-items:center;gap:8px;flex-wrap:wrap}

/* ============ 状态说明（图文） ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split .fig{margin:0;border-radius:var(--r-img);overflow:hidden;position:relative;border:1px solid var(--line)}
.split .fig img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s var(--ease)}
.split .fig:hover img{transform:scale(1.04)}
.split .fig::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,18,26,.10),rgba(6,18,26,.5))}
.point-list{display:flex;flex-direction:column;gap:20px;margin-top:26px}
.point-list li{display:flex;gap:14px}
.point-list .dot{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;display:grid;place-items:center;
  font-size:12px;color:var(--primary);background:rgba(35,166,156,.12);
  border:1px solid rgba(35,166,156,.30);margin-top:4px;
}
.point-list h4{font-size:16.5px;margin-bottom:4px}
.point-list p{color:var(--text-2);font-size:15px;line-height:1.85}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;border-radius:22px;overflow:hidden;border:1px solid var(--line-hi);
  background:var(--bg-2);box-shadow:0 0 0 1px rgba(35,166,156,.10),var(--shadow);
}
.cta-band-bg{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.36;
}
.cta-band-mask{
  position:absolute;inset:0;
  background:linear-gradient(95deg,rgba(6,18,26,.95) 0%,rgba(6,18,26,.82) 52%,rgba(6,18,26,.58) 100%);
}
.cta-band-inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;
  gap:36px;padding:52px 56px;flex-wrap:wrap;
}
.cta-band-inner h2{font-size:clamp(24px,2.8vw,32px);line-height:1.32;max-width:620px}
.cta-band-inner p{margin-top:14px;color:var(--text-2);font-size:15.5px;max-width:600px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-glow{position:absolute;width:420px;height:420px;right:-120px;top:-160px;border-radius:50%;
  background:radial-gradient(circle,rgba(35,166,156,.16),transparent 70%);pointer-events:none}

/* ============ 页脚 ============ */
.site-foot{margin-top:110px;background:var(--bg-1);position:relative;padding:72px 0 0}
.site-foot::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(122,224,214,.55),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-desc{color:var(--text-2);font-size:14.5px;line-height:1.9;max-width:340px}
.foot-col h4{font-size:15px;margin-bottom:18px;color:var(--text-1)}
.foot-col ul{display:flex;flex-direction:column;gap:12px}
.foot-col ul a{color:var(--text-2);font-size:14.5px}
.foot-col ul a:hover{color:var(--primary)}
.foot-contact li{display:flex;gap:10px;color:var(--text-2);font-size:14.5px;line-height:1.7}
.foot-contact i{color:var(--primary);font-size:15px;margin-top:5px}
.foot-bottom{
  margin-top:56px;padding:22px 0 28px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:var(--text-3);font-size:13.5px;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .m-card{grid-column:span 6}
  .m-card.c8{grid-column:span 12}
  .m-card.c6{grid-column:span 6}
  .m-card.c4{grid-column:span 6}
}
@media (max-width:991px){
  .head-nav{
    position:fixed;inset:0;flex-direction:column;align-items:stretch;gap:4px;
    margin:0;padding:96px 24px 40px;overflow-y:auto;
    background:rgba(6,18,26,.96);
    backdrop-filter:blur(18px) saturate(140%);
    -webkit-backdrop-filter:blur(18px) saturate(140%);
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:opacity .28s var(--ease),transform .28s var(--ease);
  }
  .head-nav.open{opacity:1;transform:none;pointer-events:auto}
  .head-nav > a{min-height:44px;display:flex;align-items:center;font-size:16px;padding:12px 14px;border-radius:12px}
  .head-nav > a.active{background:var(--glass);}
  .head-nav > a.active::after{left:14px;right:auto;width:22px;bottom:8px}
  .head-drawer-cta{display:flex}
  .head-actions .btn-main{display:none}
  .head-actions .icon-btn{display:none}
  .menu-btn{display:grid}
  .split{grid-template-columns:1fr;gap:32px}
  .section{padding:76px 0}
  .cat-hero-inner{padding:48px 32px}
  .cta-band-inner{padding:40px 32px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .wrap{padding:0 18px}
  .section{padding:60px 0}
  .m-card{grid-column:span 12}
  .m-card.c6,.m-card.c4,.m-card.c8{grid-column:span 12}
  .m-card.c8 .m-split{grid-template-columns:1fr;gap:20px}
  .cat-hero-inner{padding:40px 22px}
  .cta-band-inner{padding:34px 22px;flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;gap:8px}
  .crumb-bar{padding-top:92px}
}
@media (max-width:575px){
  body{font-size:15.5px}
  .cat-hero h1{font-size:28px}
  .m-card{padding:22px}
  .glass-card,.cmp-wrap{backdrop-filter:none;-webkit-backdrop-filter:none}
  .glass-card{background:rgba(15,42,51,.72)}
  .site-head{backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category3 */
:root{
  --bg-0:#06121A; --bg-1:#0A1E27; --bg-2:#0F2A33;
  --glass:rgba(255,255,255,.055); --glass-hi:rgba(255,255,255,.10);
  --line:rgba(122,224,214,.14); --line-hi:rgba(122,224,214,.34);
  --primary:#23A69C; --primary-deep:#0E6F6C; --primary-glow:rgba(35,166,156,.45);
  --accent:#F0A93B; --accent-glow:rgba(240,169,59,.36);
  --text-1:#E6F2F1; --text-2:#9CB5B6; --text-3:#6B8588;
  --ok:#46C08A; --err:#E5645B;
  --r-card:18px; --r-img:14px; --r-pill:999px; --r-btn:12px; --r-input:12px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;background:var(--bg-0);color:var(--text-1);
  font-family:var(--font-cn);font-size:16px;line-height:1.85;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .3s var(--ease)}
a:hover{color:#BFF3EC}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:.005em;line-height:1.3}
p{margin:0}
button{font-family:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(35,166,156,.45);border-radius:8px}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
@media (min-width:1400px){.wrap{max-width:1320px}}

/* ============ 导航 ============ */
.site-head{
  position:fixed;top:0;left:0;right:0;z-index:1040;height:76px;display:flex;align-items:center;
  background:rgba(6,18,26,.42);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-head.is-stuck{height:62px;background:rgba(6,18,26,.94);box-shadow:0 12px 32px rgba(0,0,0,.5)}
.head-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(35,166,156,.38),rgba(35,166,156,.06));
  border:1px solid var(--line-hi);color:#9DEBE3;font-size:17px;line-height:1;
}
.brand-text{font-weight:700;font-size:18px;color:var(--text-1);letter-spacing:.005em}
.head-nav{display:flex;align-items:center;gap:4px}
.head-nav > a{
  padding:9px 14px;border-radius:var(--r-pill);color:var(--text-2);font-size:15px;
  position:relative;white-space:nowrap;transition:color .24s var(--ease),background .24s var(--ease);
}
.head-nav > a:hover{color:var(--text-1);background:var(--glass)}
.head-nav > a.active{color:#BFF3EC}
.head-nav > a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),rgba(35,166,156,0));
}
.head-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-pill);display:grid;place-items:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);
  font-size:16px;cursor:pointer;transition:.3s var(--ease);
}
.icon-btn:hover{background:var(--glass-hi);border-color:var(--line-hi);color:var(--text-1)}
.menu-btn{
  width:40px;height:40px;border-radius:12px;display:none;place-items:center;
  background:var(--glass);border:1px solid var(--line);color:var(--text-1);font-size:20px;cursor:pointer;
}
.menu-btn:hover{background:var(--glass-hi);border-color:var(--line-hi)}
.head-drawer-cta{display:none}

@media (max-width:991.98px){
  .head-nav{
    position:fixed;left:0;right:0;top:62px;bottom:0;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:20px 24px 48px;overflow-y:auto;z-index:1041;
    background:rgba(6,18,26,.97);
    -webkit-backdrop-filter:blur(16px) saturate(140%);
    backdrop-filter:blur(16px) saturate(140%);
    border-top:1px solid var(--line);
    transform:translateY(-14px);opacity:0;visibility:hidden;
    transition:transform .28s var(--ease),opacity .28s var(--ease),visibility .28s var(--ease);
  }
  .head-nav.open{transform:none;opacity:1;visibility:visible}
  .head-nav > a{padding:14px 16px;font-size:16px;min-height:44px;display:flex;align-items:center;border-radius:12px}
  .head-nav > a.active{background:rgba(35,166,156,.12)}
  .head-nav > a.active::after{display:none}
  .head-drawer-cta{display:flex;flex-direction:column;gap:10px;margin-top:20px;padding-top:20px;border-top:1px solid var(--line)}
  .head-actions .btn-main{display:none}
  .menu-btn{display:grid}
}
@media (min-width:992px){ .head-drawer-cta{display:none} }

/* ============ 按钮 ============ */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:var(--r-pill);border:0;cursor:pointer;
  font-size:15px;font-weight:700;color:#04191C;
  background:linear-gradient(180deg,#2BB8AD,#189E95);
  box-shadow:0 0 0 1px rgba(35,166,156,.6),0 8px 28px var(--primary-glow);
  transition:transform .3s var(--ease),filter .3s var(--ease),box-shadow .3s var(--ease);
}
.btn-main:hover{transform:translateY(-2px);filter:brightness(1.06);color:#04191C}
.btn-main:active{transform:translateY(1px)}
.btn-main.sm{padding:9px 18px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-btn);cursor:pointer;font-size:15px;
  color:var(--text-1);background:var(--glass);border:1px solid var(--line);
  transition:.3s var(--ease);
}
.btn-ghost:hover{background:var(--glass-hi);border-color:var(--line-hi);color:#D9FFFA}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:#8FE3DA;font-size:15px;font-weight:600;
}
.btn-text i{transition:transform .3s var(--ease)}
.btn-text:hover i{transform:translateX(4px)}

/* ============ 通用卡片 / 徽章 ============ */
.glass-card{
  position:relative;background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);padding:28px;
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  transition:transform .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.glass-card::after{
  content:"";position:absolute;top:0;left:10%;right:10%;height:1px;border-radius:2px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.5),transparent);opacity:.45;
}
.glass-card:hover{transform:translateY(-4px);border-color:var(--line-hi)}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:var(--r-pill);font-size:12.5px;font-weight:600;
  color:#9DEBE3;background:rgba(35,166,156,.10);border:1px solid rgba(35,166,156,.32);
}
.badge-pill.accent{color:#FFD79A;background:rgba(240,169,59,.10);border-color:rgba(240,169,59,.34)}

/* ============ 小 Hero ============ */
.cat-hero{position:relative;overflow:hidden;padding:152px 0 84px;border-bottom:1px solid var(--line)}
.cat-hero-bg{
  position:absolute;inset:0;
  background:url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
  filter:saturate(.92);
}
.cat-hero-mask{
  position:absolute;inset:0;
  background:
    repeating-linear-gradient(90deg,rgba(122,224,214,.05) 0 1px,transparent 1px 92px),
    repeating-linear-gradient(0deg,rgba(122,224,214,.045) 0 1px,transparent 1px 92px),
    linear-gradient(180deg,rgba(6,18,26,.80) 0%,rgba(6,18,26,.93) 58%,var(--bg-0) 100%);
}
.cat-hero-inner{position:relative;z-index:2}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);margin-bottom:22px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:#BFF3EC}
.crumb i{font-size:11px;opacity:.6}
.cat-hero h1{
  font-size:clamp(34px,4.8vw,54px);line-height:1.15;font-weight:700;
  margin:18px 0 20px;max-width:820px;
}
.cat-hero h1 .hl{color:#7FE6DA}
.cat-hero-lead{max-width:720px;color:var(--text-2);font-size:17px;line-height:1.85}
.cat-hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.meta-chip{
  display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:var(--r-pill);
  font-size:13.5px;color:var(--text-2);background:var(--glass);border:1px solid var(--line);
}
.meta-chip i{color:#7FE6DA;font-size:15px}

/* ============ 区块 ============ */
.sec{padding:104px 0;position:relative}
.sec.tight{padding-top:88px}
.sec-head{max-width:760px;margin-bottom:52px}
.sec-head h2{font-size:clamp(26px,3.2vw,38px);line-height:1.25;margin-bottom:16px}
.sec-head p{color:var(--text-2);font-size:16px}
.sec-eyebrow{font-size:13px;font-weight:700;color:#7FE6DA;letter-spacing:.02em;margin-bottom:12px;display:block}

/* ============ 流程条 ============ */
.flow{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:8px}
.flow::before{
  content:"";position:absolute;top:28px;left:11%;right:11%;height:1px;
  background:linear-gradient(90deg,rgba(122,224,214,.06),rgba(122,224,214,.42),rgba(122,224,214,.06));
}
.flow-item{position:relative;z-index:1;padding-right:6px}
.flow-dot{
  width:56px;height:56px;border-radius:50%;display:grid;place-items:center;
  font-size:16px;font-weight:700;color:#9DEBE3;font-variant-numeric:tabular-nums;
  background:radial-gradient(circle at 32% 26%,rgba(35,166,156,.34),rgba(10,30,39,.96));
  border:1px solid var(--line-hi);
  box-shadow:0 0 0 7px rgba(6,18,26,.95),0 10px 26px rgba(0,0,0,.4);
  transition:.3s var(--ease);
}
.flow-item.is-cur .flow-dot{
  color:#FFD79A;
  background:radial-gradient(circle at 32% 26%,rgba(240,169,59,.30),rgba(10,30,39,.96));
  border-color:rgba(240,169,59,.62);
  box-shadow:0 0 0 7px rgba(6,18,26,.95),0 0 26px var(--accent-glow);
}
.flow-item h3{font-size:19px;margin:22px 0 10px}
.flow-item p{color:var(--text-2);font-size:14.8px;line-height:1.8}
.flow-item:hover .flow-dot{transform:translateY(-3px);border-color:var(--line-hi)}

/* ============ 两列要点 ============ */
.points-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.point-card{padding:32px}
.point-head{display:flex;align-items:center;gap:12px;margin-bottom:22px}
.point-head .ico{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;font-size:19px;
  color:#9DEBE3;background:rgba(35,166,156,.10);border:1px solid rgba(35,166,156,.3);
}
.point-head h3{font-size:21px}
.dot-list li{
  position:relative;padding-left:20px;margin-bottom:14px;color:var(--text-2);font-size:15px;line-height:1.8;
}
.dot-list li:last-child{margin-bottom:0}
.dot-list li::before{
  content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 0 3px rgba(35,166,156,.14);
}
.point-figure{margin-top:26px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line)}
.point-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease)}
.point-card:hover .point-figure img{transform:scale(1.04)}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;margin:0 auto}
.faq-acc .accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line)}
.faq-acc .accordion-item:first-of-type{border-top:1px solid var(--line)}
.faq-acc .accordion-button{
  position:relative;background:transparent;color:var(--text-1);
  font-size:17px;font-weight:600;line-height:1.6;
  padding:22px 8px 22px 22px;min-height:56px;width:100%;
  box-shadow:none;border-radius:0 !important;transition:.3s var(--ease);
}
.faq-acc .accordion-button::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:2px;border-radius:2px;
  background:transparent;transition:background .3s var(--ease);
}
.faq-acc .accordion-button:not(.collapsed){background:rgba(255,255,255,.035);color:#D9FFFA}
.faq-acc .accordion-button:not(.collapsed)::before{background:var(--primary);box-shadow:0 0 14px var(--primary-glow)}
.faq-acc .accordion-button::after{
  content:"";width:10px;height:10px;margin-left:auto;margin-right:10px;flex-shrink:0;
  background-image:none;border-right:2px solid var(--text-2);border-bottom:2px solid var(--text-2);
  transform:rotate(45deg);transition:transform .3s var(--ease),border-color .3s var(--ease);
  position:relative;top:-2px;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);border-color:#9DEBE3;top:2px}
.faq-acc .accordion-button:focus{box-shadow:none;outline:none}
.faq-acc .accordion-button:focus-visible{box-shadow:0 0 0 3px rgba(35,166,156,.4)}
.faq-acc .accordion-button:hover{color:#BFF3EC}
.faq-acc .accordion-body{
  padding:6px 26px 26px 22px;color:var(--text-2);font-size:15.2px;line-height:1.85;
  background:rgba(255,255,255,.02);
}
.faq-acc .accordion-body strong{color:#CFEEEB;font-weight:600}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:22px;border:1px solid var(--line-hi);
  padding:46px 44px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:linear-gradient(120deg,rgba(15,42,51,.96),rgba(10,30,39,.86));
  box-shadow:0 0 0 1px rgba(35,166,156,.18),0 24px 60px rgba(0,0,0,.5);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url(/assets/images/backpic/back-3.png) center/cover no-repeat;opacity:.20;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 220px at 12% 20%,rgba(35,166,156,.28),transparent 70%);
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);line-height:1.3;margin-bottom:12px}
.cta-band p{color:var(--text-2);font-size:15.5px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex-shrink:0}

/* ============ 页脚 ============ */
.site-foot{
  position:relative;margin-top:96px;padding:72px 0 0;
  background:var(--bg-1);border-top:1px solid var(--line);
}
.site-foot::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(122,224,214,.55),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.foot-desc{color:var(--text-3);font-size:14.5px;line-height:1.8;max-width:330px}
.foot-col h4{font-size:15.5px;margin-bottom:18px;color:var(--text-1)}
.foot-col ul li{margin-bottom:12px}
.foot-col ul li a{color:var(--text-2);font-size:14.5px}
.foot-col ul li a:hover{color:#BFF3EC}
.foot-contact li{display:flex;align-items:flex-start;gap:10px;color:var(--text-2);font-size:14.5px;margin-bottom:14px}
.foot-contact li i{color:#7FE6DA;font-size:15px;margin-top:5px}
.foot-bottom{
  margin-top:56px;padding:22px 0 30px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  color:var(--text-3);font-size:13.5px;
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .flow{grid-template-columns:repeat(2,1fr);row-gap:44px}
  .flow::before{display:none}
}
@media (max-width:991.98px){
  .sec{padding:80px 0}
  .cat-hero{padding:126px 0 68px}
  .points-grid{grid-template-columns:1fr;gap:24px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:36px 28px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  .sec{padding:64px 0}
  .sec-head{margin-bottom:36px}
  .cat-hero{padding:112px 0 56px}
  .cat-hero-lead{font-size:15.6px}
  .flow{grid-template-columns:1fr;row-gap:32px;margin-top:4px}
  .point-card{padding:24px}
  .glass-card{padding:24px}
  .foot-grid{grid-template-columns:1fr}
  .cta-actions{width:100%}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%}
  .foot-bottom{flex-direction:column}
}
@media (max-width:575.98px){
  .wrap{padding:0 18px}
  .cat-hero h1{font-size:32px}
  .faq-acc .accordion-button{font-size:15.6px;padding:18px 6px 18px 18px}
  .faq-acc .accordion-body{padding:4px 18px 22px 18px}
}
@media (max-width:991.98px){
  .site-head,.head-nav{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}
  .head-nav{background:rgba(6,18,26,.98)}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}