/* roulang page: index */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1320;
  --bg-2:#101B2E;
  --brand:#2FD8FF;
  --brand-deep:#0E8FB8;
  --accent:#FF7A59;
  --accent-2:#FFB35C;
  --mint:#6EE7B7;
  --t1:#EAF2FF;
  --t2:#A9BBD4;
  --t3:#6C7F9B;
  --line:rgba(140,200,255,.12);
  --line-strong:rgba(140,220,255,.18);
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 14px rgba(0,0,0,.35);
  --sh-2:0 18px 44px rgba(0,0,0,.5);
  --glow:0 0 24px rgba(47,216,255,.35);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--t1);
  --bs-primary:var(--brand);
  --bs-border-radius:var(--r-md);
  --bs-border-radius-sm:var(--r-sm);
  --bs-border-radius-lg:var(--r-lg);
  --bs-link-color:var(--brand);
  --bs-link-hover-color:#7CE7FF;
  --bs-border-color:rgba(140,220,255,.16);
  --bs-font-sans-serif:var(--font-cn);
}

*,*::before,*::after{box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--t1);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(60% 40% at 70% 0%, rgba(47,216,255,.14), transparent 70%),
    linear-gradient(rgba(140,200,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,200,255,.035) 1px, transparent 1px);
  background-size:auto, 42px 42px, 42px 42px;
  background-repeat:no-repeat, repeat, repeat;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:#7CE7FF;}
button{font-family:inherit;}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{margin:0;line-height:1.28;font-weight:700;letter-spacing:-.01em;}

:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}

.container-xxl{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;width:100%;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  padding:14px 0;
  border-bottom:1px solid transparent;
  transition:background .3s ease,padding .3s ease,border-color .3s ease,backdrop-filter .3s ease;
}
.site-header.scrolled{
  padding:8px 0;
  background:rgba(8,14,24,.74);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom-color:rgba(140,220,255,.14);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}

.brand{
  display:flex;
  align-items:center;
  gap:11px;
  color:var(--t1);
  text-decoration:none;
}
.brand:hover{color:var(--t1);}
.brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:12px;
  background:linear-gradient(160deg,rgba(47,216,255,.16),rgba(47,216,255,.02));
  border:1px solid rgba(47,216,255,.35);
  box-shadow:0 0 18px rgba(47,216,255,.22);
  flex:0 0 auto;
}
.brand-copy{display:flex;flex-direction:column;line-height:1.1;}
.brand-name{font-size:18px;font-weight:800;letter-spacing:.02em;}
.brand-name em{font-style:normal;margin-left:5px;font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--brand);text-transform:lowercase;}
.brand-sub{font-size:11px;letter-spacing:.06em;color:var(--t3);margin-top:3px;}

.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;
  padding:8px 14px;
  font-size:15px;
  color:var(--t2);
  border-radius:var(--r-pill);
  transition:color .18s ease,background .18s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-deep));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .16s ease;
  opacity:.9;
}
.nav-link:hover{color:var(--t1);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(47,216,255,.7);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--r-pill);
  font-weight:600;
  font-size:15px;
  padding:11px 24px;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease,color .2s ease;
  text-decoration:none;
  line-height:1.2;
}
.btn-sm{padding:8px 18px;font-size:14px;}
.btn-lg{padding:14px 30px;font-size:16px;}

.btn-accent{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#1C0D06;
  box-shadow:0 10px 26px rgba(255,122,89,.28);
}
.btn-accent:hover{color:#1C0D06;transform:translateY(-2px);box-shadow:0 14px 34px rgba(255,122,89,.42);}
.btn-accent:active{transform:translateY(0);}

.btn-glass{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border-color:rgba(140,220,255,.22);
  color:var(--t1);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.btn-glass:hover{color:#fff;border-color:rgba(47,216,255,.6);transform:translateY(-2px);box-shadow:0 10px 26px rgba(0,0,0,.35);}
.btn-glass:active{transform:translateY(0);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:66px 0 70px;
  background-image:linear-gradient(180deg,rgba(6,10,18,.72),rgba(6,10,18,.94)),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
  border-bottom:1px solid var(--line);
}
.hero-grid{
  display:grid;
  grid-template-columns:6fr 5fr;
  gap:52px;
  align-items:center;
}
.pill-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 15px;
  border-radius:var(--r-pill);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--brand);
  background:rgba(47,216,255,.08);
  border:1px solid rgba(47,216,255,.3);
}
.pill-tag::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 10px rgba(110,231,183,.9);
}
.hero h1{
  margin:20px 0 0;
  font-size:clamp(30px,4.4vw,52px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.01em;
  background:linear-gradient(120deg,#FFFFFF 20%,#B9E9FF 70%,#7FD6F5 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-sub{
  margin:18px 0 0;
  font-size:17px;
  color:var(--t2);
  max-width:520px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:38px;
  margin-top:38px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.stat-item{display:flex;flex-direction:column;gap:2px;}
.stat-num{
  font-size:34px;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--brand);
  text-shadow:0 0 22px rgba(47,216,255,.45);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
}
.stat-label{font-size:13px;color:var(--t3);letter-spacing:.04em;}

.hero-cover{
  display:flex;
  justify-content:center;
}
.cover-media{
  position:relative;
  width:100%;
  max-width:360px;
  aspect-ratio:9/16;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid rgba(47,216,255,.42);
  box-shadow:0 0 34px rgba(47,216,255,.24),var(--sh-2);
  background:var(--bg-2);
}
.cover-media img{width:100%;height:100%;object-fit:cover;}
.cover-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,.05) 40%,rgba(6,10,18,.88) 100%);
}
.cover-duration{
  position:absolute;top:14px;left:14px;z-index:2;
  padding:4px 11px;
  font-size:12px;
  letter-spacing:.06em;
  border-radius:var(--r-pill);
  background:rgba(6,10,18,.7);
  border:1px solid rgba(140,220,255,.24);
  color:var(--t1);
  backdrop-filter:blur(8px);
}
.cover-play{
  position:absolute;z-index:2;
  right:16px;bottom:96px;
  width:56px;height:56px;
  border-radius:50%;
  display:grid;place-items:center;
  background:rgba(10,18,30,.6);
  border:1px solid rgba(47,216,255,.6);
  color:var(--brand);
  backdrop-filter:blur(10px);
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease;
}
.cover-play:hover{transform:scale(1.06);box-shadow:var(--glow);background:rgba(14,143,184,.36);}
.cover-caption{
  position:absolute;z-index:2;
  left:16px;right:16px;bottom:16px;
}
.cover-caption h3{
  font-size:16px;
  font-weight:600;
  color:#fff;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.cover-caption p{margin:6px 0 0;font-size:12px;color:var(--t2);letter-spacing:.04em;}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0;}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:30px;
}
.section-eyebrow{
  font-size:12px;
  letter-spacing:.2em;
  color:var(--brand);
  text-transform:uppercase;
}
.section-head h2{
  position:relative;
  margin:10px 0 0;
  padding-left:16px;
  font-size:clamp(22px,3vw,32px);
  font-weight:700;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;top:.2em;bottom:.2em;
  width:4px;
  border-radius:4px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 14px rgba(47,216,255,.55);
}
.section-more{
  flex:0 0 auto;
  font-size:14px;
  color:var(--t2);
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding-bottom:6px;
}
.section-more:hover{color:var(--brand);}
.section-more i{font-size:12px;}

/* ---------- 横滑轨道 ---------- */
.rail-wrap{position:relative;}
.rail{
  display:flex;
  gap:18px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 4px 20px;
  scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-wrap::before,
.rail-wrap::after{
  content:"";
  position:absolute;
  top:0;bottom:20px;
  width:56px;
  pointer-events:none;
  z-index:2;
}
.rail-wrap::before{left:-4px;background:linear-gradient(90deg,var(--bg-0),transparent);}
.rail-wrap::after{right:-4px;background:linear-gradient(270deg,var(--bg-0),transparent);}
.section-alt .rail-wrap::before{background:linear-gradient(90deg,var(--bg-1),transparent);}
.section-alt .rail-wrap::after{background:linear-gradient(270deg,var(--bg-1),transparent);}

.clip-card{
  flex:0 0 200px;
  scroll-snap-align:start;
}
.clip-link{display:block;color:inherit;text-decoration:none;}
.clip-media{
  position:relative;
  aspect-ratio:9/16;
  border-radius:var(--r-md);
  overflow:hidden;
  background:var(--bg-2);
  border:1px solid var(--line-strong);
  box-shadow:var(--sh-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.clip-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.clip-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 48%,rgba(6,10,18,.82) 100%);
}
.clip-link:hover .clip-media{transform:translateY(-3px);border-color:rgba(47,216,255,.5);box-shadow:var(--sh-2);}
.clip-link:hover .clip-media img{transform:scale(1.04);}
.clip-link:focus-visible{outline:2px solid var(--brand);outline-offset:4px;border-radius:var(--r-md);}
.clip-duration{
  position:absolute;top:10px;left:10px;z-index:2;
  padding:3px 9px;
  font-size:11px;
  border-radius:var(--r-pill);
  background:rgba(6,10,18,.72);
  border:1px solid rgba(140,220,255,.22);
  color:var(--t1);
  font-variant-numeric:tabular-nums;
}
.clip-hot{
  position:absolute;top:10px;right:10px;z-index:2;
  padding:3px 9px;
  font-size:11px;
  border-radius:var(--r-pill);
  background:rgba(255,122,89,.16);
  border:1px solid rgba(255,122,89,.45);
  color:var(--accent-2);
  font-variant-numeric:tabular-nums;
}
.clip-title{
  margin:12px 0 0;
  font-size:15px;
  font-weight:600;
  line-height:1.5;
  color:var(--t1);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.clip-meta{margin:6px 0 0;font-size:12px;color:var(--t3);}

/* ---------- 种草清单 ---------- */
.rank-list{border-top:1px solid var(--line);}
.rank-item{border-bottom:1px solid var(--line);}
.rank-link{
  display:grid;
  grid-template-columns:76px 150px 1fr 32px;
  gap:26px;
  align-items:center;
  padding:22px 10px;
  color:inherit;
  text-decoration:none;
  transition:background .25s ease,padding-left .25s ease;
}
.rank-link:hover{
  background:linear-gradient(90deg,rgba(47,216,255,.08),transparent 72%);
  padding-left:22px;
}
.rank-link:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;border-radius:var(--r-md);}
.rank-num{
  font-size:46px;
  font-weight:800;
  line-height:1;
  letter-spacing:-.03em;
  color:rgba(47,216,255,.32);
  font-variant-numeric:tabular-nums;
}
.rank-thumb{
  border-radius:var(--r-md);
  overflow:hidden;
  aspect-ratio:16/10;
  background:var(--bg-2);
  border:1px solid var(--line-strong);
}
.rank-thumb img{width:100%;height:100%;object-fit:cover;}
.rank-body h3{
  font-size:19px;
  font-weight:600;
  margin-bottom:6px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rank-body p{
  margin:0;
  font-size:14px;
  color:var(--t2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rank-arrow{color:var(--brand);font-size:16px;transition:transform .22s ease;}
.rank-link:hover .rank-arrow{transform:translateX(5px);}
.badge-soft{
  display:inline-block;
  margin-bottom:8px;
  padding:2px 10px;
  font-size:11px;
  letter-spacing:.1em;
  border-radius:var(--r-pill);
  color:var(--mint);
  background:rgba(110,231,183,.1);
  border:1px solid rgba(110,231,183,.32);
}

/* ---------- 口碑 ---------- */
.review-card{
  flex:0 0 300px;
  scroll-snap-align:start;
  padding:20px;
  border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line-strong);
  box-shadow:var(--sh-1);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.review-card:hover{transform:translateY(-3px);border-color:rgba(47,216,255,.42);box-shadow:var(--sh-2);}
.review-top{display:flex;align-items:center;gap:12px;}
.avatar{
  width:40px;height:40px;
  border-radius:50%;
  display:grid;place-items:center;
  font-size:15px;
  font-weight:700;
  color:#05131B;
  background:linear-gradient(140deg,var(--brand),var(--brand-deep));
  flex:0 0 auto;
}
.review-name{font-size:14px;font-weight:600;}
.stars{
  font-size:12px;
  letter-spacing:.12em;
  color:var(--accent-2);
  margin-top:2px;
}
.stars .mint{color:var(--mint);}
.review-card p{
  margin:14px 0 0;
  font-size:14px;
  color:var(--t2);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.review-time{display:block;margin-top:14px;font-size:12px;color:var(--t3);letter-spacing:.04em;}

/* ---------- 最新信息（CMS） ---------- */
.news-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.news-card{
  display:flex;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border:1px solid var(--line-strong);
  border-radius:var(--r-lg);
  overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.news-card:hover{transform:translateY(-3px);border-color:rgba(47,216,255,.42);box-shadow:var(--sh-2);}
.news-card.is-lead{grid-column:span 2;grid-row:span 2;}
.news-link{
  display:flex;
  flex-direction:column;
  width:100%;
  height:100%;
  color:inherit;
  text-decoration:none;
}
.news-link:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;}
.news-cover{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-2);
  border-bottom:1px solid var(--line);
}
.news-card.is-lead .news-cover{aspect-ratio:16/9.6;}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-cover img{transform:scale(1.04);}
.news-cover.is-empty{
  background:
    radial-gradient(70% 70% at 30% 20%, rgba(47,216,255,.22), transparent 70%),
    linear-gradient(160deg,var(--bg-2),#0A1424);
}
.news-cover.is-empty::after{
  content:"";
  position:absolute;
  inset:26% 32%;
  border-radius:var(--r-sm);
  border:1px solid rgba(47,216,255,.4);
}
.news-body{padding:18px;display:flex;flex-direction:column;flex:1;}
.news-tags{display:flex;align-items:center;gap:10px;margin-bottom:10px;flex-wrap:wrap;}
.tag{
  display:inline-block;
  padding:2px 10px;
  font-size:12px;
  letter-spacing:.08em;
  border-radius:var(--r-sm);
  color:var(--brand);
  background:rgba(47,216,255,.1);
  border:1px solid rgba(47,216,255,.28);
}
.news-time{font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums;}
.news-title{
  font-size:17px;
  font-weight:600;
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card.is-lead .news-title{font-size:22px;line-height:1.42;}
.news-summary{
  margin:10px 0 0;
  font-size:14px;
  color:var(--t2);
  line-height:1.7;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-foot{
  margin-top:auto;
  padding-top:14px;
  font-size:13px;
  color:var(--t3);
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.news-foot i{color:var(--brand);font-size:12px;}

.news-empty{
  padding:60px 24px;
  text-align:center;
  border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line-strong);
}
.news-empty p{margin:0 0 18px;color:var(--t2);font-size:15px;}

/* ---------- FAQ ---------- */
.faq-accordion .accordion-item{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line-strong);
  border-radius:var(--r-md);
  margin-bottom:10px;
  overflow:hidden;
}
.faq-accordion .accordion-button{
  background:transparent;
  color:var(--t1);
  font-size:16px;
  font-weight:600;
  padding:18px 22px;
  box-shadow:none;
  border-radius:var(--r-md);
  line-height:1.6;
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--brand);
  background:rgba(47,216,255,.07);
  box-shadow:inset 3px 0 0 var(--brand);
}
.faq-accordion .accordion-button:focus{box-shadow:inset 3px 0 0 var(--brand);border-color:transparent;}
.faq-accordion .accordion-button::after{
  content:"+";
  background-image:none;
  width:auto;height:auto;
  font-size:22px;
  font-weight:400;
  line-height:1;
  color:var(--brand);
  transform:none;
  transition:transform .18s ease;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-left:16px;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.faq-accordion .accordion-body{
  padding:0 22px 20px;
  color:var(--t2);
  font-size:15px;
  line-height:1.8;
}

/* ---------- 订阅 / CTA ---------- */
.cta-box{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:44px;
  align-items:center;
  padding:44px;
  border-radius:var(--r-lg);
  background-image:linear-gradient(180deg,rgba(6,10,18,.82),rgba(6,10,18,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border:1px solid rgba(47,216,255,.28);
  box-shadow:0 0 40px rgba(47,216,255,.12);
}
.cta-box h2{font-size:clamp(22px,3vw,30px);}
.cta-box p{margin:14px 0 0;color:var(--t2);font-size:15px;}
.cta-list{margin-top:22px;display:flex;flex-wrap:wrap;gap:12px;}
.cta-chip{
  padding:6px 14px;
  font-size:13px;
  border-radius:var(--r-pill);
  color:var(--t2);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line-strong);
}
.subscribe-form{display:flex;gap:10px;}
.subscribe-form .form-control{
  flex:1;
  height:50px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(140,220,255,.2);
  color:var(--t1);
  padding:0 20px;
  font-size:15px;
  box-shadow:none;
}
.subscribe-form .form-control::placeholder{color:var(--t3);}
.subscribe-form .form-control:focus{
  background:rgba(255,255,255,.08);
  border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(47,216,255,.16);
  color:var(--t1);
}
.form-hint{margin:12px 0 0;font-size:12px;color:var(--t3);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#04070E;
  border-top:1px solid rgba(47,216,255,.22);
  padding:58px 0 32px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;left:0;right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,216,255,.75),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
}
.footer-brand p{margin:16px 0 0;font-size:13px;color:var(--t3);max-width:280px;line-height:1.8;}
.footer-col h3{
  font-size:15px;
  font-weight:700;
  color:var(--t1);
  margin-bottom:16px;
  letter-spacing:.04em;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--t2);}
.footer-col a:hover{color:var(--brand);}
.footer-note{font-size:13px;color:var(--t3);line-height:1.9;}
.footer-btn{margin-top:18px;}
.footer-bottom{
  margin-top:44px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--t3);
}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tabs{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1040;
  height:60px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(8,14,24,.86);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-top:1px solid rgba(140,220,255,.16);
  grid-template-columns:repeat(4,1fr);
  align-items:center;
}
.mobile-tab{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  height:60px;
  color:var(--t3);
  font-size:11px;
  text-decoration:none;
  position:relative;
}
.mobile-tab i{font-size:19px;transition:color .18s ease;}
.mobile-tab.active{color:var(--brand);}
.mobile-tab.active i{color:var(--brand);text-shadow:0 0 6px rgba(47,216,255,.9);}
.mobile-tab.active::before{
  content:"";
  position:absolute;
  top:6px;
  width:44px;height:34px;
  border-radius:50%;
  background:radial-gradient(closest-side,rgba(47,216,255,.22),transparent);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .news-grid{grid-template-columns:repeat(3,1fr);}
  .news-card.is-lead{grid-column:span 2;grid-row:span 2;}
}

@media (max-width:991px){
  body{padding-bottom:76px;}
  .main-nav{display:none;}
  .header-cta .btn{display:none;}
  .mobile-tabs{display:grid;}
  .hero{padding:48px 0 54px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-sub{max-width:none;}
  .hero-cover{justify-content:center;}
  .cover-media{max-width:78vw;}
  .section{padding:56px 0;}
  .cta-box{grid-template-columns:1fr;gap:28px;padding:32px 24px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .news-card.is-lead{grid-column:span 2;grid-row:auto;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1/-1;}
}

@media (max-width:767px){
  .section{padding:48px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;}
  .rank-link{
    grid-template-columns:44px 88px 1fr;
    gap:14px;
    padding:18px 6px;
    align-items:start;
  }
  .rank-num{font-size:28px;padding-top:2px;}
  .rank-arrow{display:none;}
  .rank-body h3{font-size:16px;}
  .rank-body p{font-size:13px;-webkit-line-clamp:2;}
  .hero-stats{gap:24px;}
  .stat-num{font-size:26px;}
  .cta-box{padding:26px 18px;}
  .subscribe-form{flex-direction:column;}
  .subscribe-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}

@media (max-width:575px){
  .container-xxl{padding-left:16px;padding-right:16px;}
  .news-grid{grid-template-columns:1fr;}
  .news-card.is-lead{grid-column:auto;}
  .clip-card{flex:0 0 158px;}
  .review-card{flex:0 0 82%;}
  .hero-actions .btn{width:100%;}
  .hero-stats{gap:20px;justify-content:space-between;}
  .brand-sub{display:none;}
}

@media (min-width:1400px){
  .news-grid{grid-template-columns:repeat(4,1fr);}
}

/* roulang page: article */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1320;
  --bg-2:#101B2E;
  --brand:#2FD8FF;
  --brand-deep:#0E8FB8;
  --accent:#FF7A59;
  --accent-2:#FFB35C;
  --mint:#6EE7B7;
  --t1:#EAF2FF;
  --t2:#A9BBD4;
  --t3:#6C7F9B;
  --hair:rgba(140,200,255,.12);
  --line:rgba(140,220,255,.16);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 14px rgba(0,0,0,.35);
  --sh-2:0 18px 44px rgba(0,0,0,.5);
  --glow:0 0 24px rgba(47,216,255,.35);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;

  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--t1);
  --bs-primary:var(--brand);
  --bs-border-radius:var(--r-md);
  --bs-link-color:var(--brand);
  --bs-link-hover-color:#7FE6FF;
  --bs-font-sans-serif:var(--font-cn);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  min-height:100vh;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--t2);
  background-color:var(--bg-0);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-2;
  background:
    radial-gradient(60% 40% at 70% 0%, rgba(47,216,255,.14), transparent 70%),
    radial-gradient(50% 40% at 10% 100%, rgba(14,143,184,.12), transparent 70%);
  pointer-events:none;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  background-image:
    linear-gradient(rgba(140,200,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,200,255,.04) 1px, transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease, opacity .18s ease}
a:hover{color:#7FE6FF}
h1,h2,h3,h4{color:var(--t1);margin:0;line-height:1.25;font-weight:700}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.1em}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

.container-xxl{max-width:1200px;padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-pill);font-weight:600;letter-spacing:.02em;border:1px solid transparent;transition:transform .18s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .18s ease;text-decoration:none}
.btn:active{transform:translateY(1px)}
.btn-accent{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#25130C;box-shadow:0 10px 26px rgba(255,122,89,.28)}
.btn-accent:hover{color:#1A0D06;box-shadow:0 14px 32px rgba(255,122,89,.4);transform:translateY(-2px)}
.btn-glass{background:var(--glass);border-color:var(--line);color:var(--t1);backdrop-filter:blur(12px)}
.btn-glass:hover{border-color:rgba(47,216,255,.5);color:#fff;box-shadow:var(--glow);transform:translateY(-2px)}
.btn-brand{background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#04141C;box-shadow:0 10px 26px rgba(47,216,255,.24)}
.btn-brand:hover{color:#04141C;box-shadow:0 14px 32px rgba(47,216,255,.38);transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-lg{padding:14px 30px;font-size:16px}
.btn-block{width:100%}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:1030;transition:background .28s ease,border-color .28s ease,backdrop-filter .28s ease;border-bottom:1px solid transparent}
.site-header.is-scrolled{background:rgba(11,19,32,.82);backdrop-filter:blur(16px) saturate(140%);border-bottom-color:var(--line);box-shadow:0 6px 24px rgba(0,0,0,.35)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:72px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex:0 0 auto}
.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:linear-gradient(160deg,rgba(47,216,255,.18),rgba(47,216,255,.03));border:1px solid rgba(140,220,255,.28);box-shadow:0 0 18px rgba(47,216,255,.22)}
.brand-copy{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:19px;font-weight:800;color:var(--t1);letter-spacing:.02em}
.brand-name em{font-style:normal;font-size:11px;font-weight:600;color:var(--brand);margin-left:6px;letter-spacing:.16em;text-transform:uppercase}
.brand-sub{font-size:11px;color:var(--t3);letter-spacing:.05em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{position:relative;padding:10px 14px;font-size:15px;font-weight:500;color:var(--t2);border-radius:var(--r-sm);transition:color .18s ease,background .18s ease}
.nav-link:hover{color:var(--t1);background:rgba(47,216,255,.07)}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),transparent);transform:scaleX(0);transform-origin:left;transition:transform .18s ease;box-shadow:0 0 10px rgba(47,216,255,.6)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{transform:scaleX(1)}
.header-cta{margin-left:18px;display:flex;align-items:center}

/* ============ 面包屑 ============ */
.crumb-wrap{padding-top:26px}
.crumbs{display:flex;align-items:center;flex-wrap:nowrap;gap:8px;font-size:13px;color:var(--t3);overflow:hidden;white-space:nowrap}
.crumbs a{color:var(--t2)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:rgba(108,127,155,.6)}
.crumbs .current{color:var(--t3);overflow:hidden;text-overflow:ellipsis;min-width:0}
.crumbs .cat{color:var(--brand)}

/* ============ 文章头区 ============ */
.article-hero{position:relative;padding:30px 0 46px;overflow:hidden;border-bottom:1px solid var(--hair)}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,.72),rgba(6,10,18,.94)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity:.9;
}
.article-hero > .container-xxl{position:relative;z-index:1}
.hero-inner{max-width:880px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);font-size:12px;letter-spacing:.1em;color:var(--brand);background:rgba(47,216,255,.1);border:1px solid rgba(47,216,255,.32)}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 10px var(--mint)}
.article-hero h1{font-size:34px;font-weight:800;letter-spacing:-.01em;line-height:1.22;margin:18px 0 16px;color:#F4F9FF}
.hero-lead{font-size:16px;color:var(--t2);max-width:760px;margin-bottom:22px}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:13px;color:var(--t3)}
.post-meta .meta-item{display:inline-flex;align-items:center;gap:7px}
.post-meta i{color:var(--brand);font-size:12px}
.post-meta .chip{padding:4px 12px;border-radius:var(--r-pill);border:1px solid rgba(47,216,255,.3);background:rgba(47,216,255,.08);color:var(--brand);font-size:12px}

/* ============ 正文 ============ */
.article-main{padding:52px 0 72px}
.post-prose{max-width:780px;margin:0 auto;font-size:17px;line-height:1.9;color:#D3E1F3}
.post-prose > *:first-child{margin-top:0}
.post-prose h2{position:relative;font-size:26px;font-weight:700;color:var(--t1);margin:46px 0 18px;padding-left:16px}
.post-prose h2::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:4px;background:linear-gradient(180deg,var(--brand),rgba(47,216,255,.15));box-shadow:0 0 14px rgba(47,216,255,.45)}
.post-prose h3{font-size:19px;font-weight:600;color:var(--t1);margin:32px 0 12px}
.post-prose h4{font-size:17px;color:var(--t1);margin:24px 0 10px}
.post-prose p{margin:0 0 1.25em}
.post-prose strong{color:#F1F7FF}
.post-prose a{color:var(--brand);border-bottom:1px solid rgba(47,216,255,.35)}
.post-prose a:hover{border-bottom-color:var(--brand)}
.post-prose ul,.post-prose ol{padding-left:1.35em;margin:0 0 1.3em}
.post-prose li{margin-bottom:.5em}
.post-prose li::marker{color:var(--brand)}
.post-prose blockquote{margin:26px 0;padding:18px 22px;border-left:3px solid var(--brand);border-radius:var(--r-md);background:var(--glass);border-top:1px solid var(--hair);border-right:1px solid var(--hair);border-bottom:1px solid var(--hair);color:var(--t2)}
.post-prose img{border-radius:var(--r-md);margin:26px auto;box-shadow:var(--sh-1);border:1px solid var(--hair)}
.post-prose figure{margin:26px 0}
.post-prose figcaption{font-size:13px;color:var(--t3);text-align:center;margin-top:10px}
.post-prose table{width:100%;display:block;overflow-x:auto;border-collapse:collapse;margin:24px 0;font-size:15px}
.post-prose th,.post-prose td{border:1px solid var(--hair);padding:10px 14px;text-align:left;white-space:nowrap}
.post-prose th{background:rgba(47,216,255,.08);color:var(--t1)}
.post-prose pre{background:#08111E;border:1px solid var(--hair);border-radius:var(--r-md);padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.7;color:#BFE7F6}
.post-prose code{background:rgba(47,216,255,.1);border:1px solid rgba(47,216,255,.2);border-radius:6px;padding:1px 6px;font-size:.92em;color:#9FE9FF}
.post-prose pre code{background:none;border:none;padding:0;color:inherit}
.post-prose hr{border:none;height:1px;background:linear-gradient(90deg,transparent,var(--hair),transparent);margin:38px 0}

/* ============ 标签行 ============ */
.tag-row{max-width:780px;margin:44px auto 0;padding-top:24px;border-top:1px solid var(--hair);display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.tag-row .label{font-size:13px;color:var(--t3);letter-spacing:.08em;margin-right:4px}
.pill{display:inline-flex;align-items:center;gap:6px;padding:7px 16px;border-radius:var(--r-pill);font-size:13px;color:var(--t2);background:var(--glass);border:1px solid var(--hair);transition:border-color .2s ease,color .2s ease,transform .2s ease}
.pill:hover{border-color:rgba(47,216,255,.42);color:var(--t1);transform:translateY(-2px)}
.pill.is-brand{color:var(--brand);border-color:rgba(47,216,255,.36);background:rgba(47,216,255,.08)}

/* ============ 空态 ============ */
.empty-state{max-width:780px;margin:0 auto;text-align:center;padding:56px 28px;border-radius:var(--r-lg);background:var(--glass);border:1px solid var(--line);box-shadow:var(--sh-1)}
.empty-state i{font-size:26px;color:var(--brand);margin-bottom:16px;display:block}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--t3);margin-bottom:22px}

/* ============ 通用板块 ============ */
.section{padding:72px 0}
.section-alt{background:linear-gradient(180deg,rgba(11,19,32,0),rgba(11,19,32,.72) 40%,rgba(11,19,32,0))}
.section-head{max-width:760px;margin-bottom:38px}
.section-head .eyebrow{display:inline-block;font-size:12px;letter-spacing:.16em;color:var(--brand);margin-bottom:10px}
.section-head h2{position:relative;font-size:28px;font-weight:700;padding-left:16px;margin-bottom:12px}
.section-head h2::before{content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:4px;border-radius:4px;background:linear-gradient(180deg,var(--brand),rgba(47,216,255,.15));box-shadow:0 0 14px rgba(47,216,255,.4)}
.section-head p{color:var(--t3);margin:0;font-size:15px}

/* ============ 上一篇 / 下一篇 ============ */
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;max-width:900px;margin:0 auto}
.post-nav-card{display:block;padding:22px 24px;border-radius:var(--r-lg);background:var(--glass);border:1px solid var(--line);box-shadow:var(--sh-1);transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.post-nav-card:hover{transform:translateY(-3px);border-color:rgba(47,216,255,.4);box-shadow:var(--sh-2)}
.post-nav-card .dir{font-size:12px;color:var(--t3);letter-spacing:.12em;display:flex;align-items:center;gap:8px;margin-bottom:10px}
.post-nav-card .dir i{color:var(--brand)}
.post-nav-card h3{font-size:17px;font-weight:600;line-height:1.5;color:var(--t1);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-nav-card.text-end{text-align:right}
.post-nav-card.text-end .dir{justify-content:flex-end}

/* ============ 相关内容 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.rel-card{display:block;border-radius:var(--r-lg);overflow:hidden;background:var(--glass);border:1px solid var(--line);box-shadow:var(--sh-1);transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease}
.rel-card:hover{transform:translateY(-3px);border-color:rgba(47,216,255,.4);box-shadow:var(--sh-2)}
.rel-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,18,.05),rgba(6,10,18,.7))}
.rel-body{padding:18px 20px 22px}
.rel-body h3{font-size:17px;font-weight:600;color:var(--t1);margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-body p{font-size:14px;color:var(--t3);margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--t3)}
.rel-meta .cat{color:var(--brand)}

/* ============ 返回入口 ============ */
.back-cta{border-radius:var(--r-lg);padding:40px 34px;background:var(--glass);border:1px solid var(--line);box-shadow:var(--sh-1);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px}
.back-cta h2{font-size:22px;margin-bottom:8px}
.back-cta p{color:var(--t3);margin:0;font-size:15px}
.back-cta .actions{display:flex;flex-wrap:wrap;gap:12px}

/* ============ 页脚 ============ */
.site-footer{position:relative;margin-top:20px;background:#04070D;border-top:1px solid transparent}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(47,216,255,.55),transparent)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:34px;padding:56px 0 34px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--t3);max-width:280px;margin-bottom:18px}
.footer-btn{margin-top:2px}
.footer-col h3{font-size:15px;font-weight:600;color:var(--t1);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--t3)}
.footer-col a:hover{color:var(--brand)}
.footer-note{font-size:14px;color:var(--t3);line-height:1.9}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;padding:18px 0 22px;border-top:1px solid var(--hair);font-size:13px;color:var(--t3)}

/* ============ 移动端底部 Tab ============ */
.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:1040;display:none;grid-template-columns:repeat(4,1fr);background:rgba(11,19,32,.92);backdrop-filter:blur(16px) saturate(140%);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
.tabbar a{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;height:60px;font-size:11px;color:var(--t3);text-decoration:none;transition:color .18s ease}
.tabbar a i{font-size:19px}
.tabbar a.active{color:var(--brand)}
.tabbar a.active i{filter:drop-shadow(0 0 6px rgba(47,216,255,.8))}
.tabbar a.active::after{content:"";position:absolute;top:6px;width:26px;height:26px;border-radius:50%;background:radial-gradient(circle,rgba(47,216,255,.22),transparent 70%);z-index:-1}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .main-nav{gap:0}
  .nav-link{padding:10px 10px;font-size:14px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
}
@media (max-width:991.98px){
  body{padding-bottom:76px}
  .main-nav,.header-cta{display:none}
  .header-inner{min-height:64px}
  .tabbar{display:grid}
  .article-hero h1{font-size:28px}
  .article-hero{padding:22px 0 38px}
  .section{padding:56px 0}
  .section-head h2{font-size:23px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding:44px 0 26px}
  .footer-brand{grid-column:1 / -1}
  .footer-bottom{padding-bottom:26px}
}
@media (max-width:767.98px){
  .article-main{padding:38px 0 56px}
  .post-prose{font-size:16px;line-height:1.9}
  .post-prose h2{font-size:22px;margin:36px 0 14px}
  .post-nav{grid-template-columns:1fr}
  .post-nav-card.text-end{text-align:left}
  .post-nav-card.text-end .dir{justify-content:flex-start}
  .rel-grid{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:14px;padding-bottom:8px;scrollbar-width:none}
  .rel-grid::-webkit-scrollbar{display:none}
  .rel-card{flex:0 0 76%;scroll-snap-align:start}
  .back-cta{padding:28px 22px}
  .back-cta .actions{width:100%}
  .back-cta .actions .btn{flex:1 1 100%}
}
@media (max-width:575.98px){
  .container-xxl{padding-left:16px;padding-right:16px}
  .article-hero h1{font-size:24px}
  .hero-lead{font-size:15px}
  .brand-sub{display:none}
  .footer-grid{grid-template-columns:1fr;gap:22px}
  .rel-card{flex:0 0 84%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}

/* roulang page: category1 */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1320;
  --bg-2:#101B2E;
  --brand:#2FD8FF;
  --brand-deep:#0E8FB8;
  --accent:#FF7A59;
  --accent-2:#FFB35C;
  --mint:#6EE7B7;
  --t1:#EAF2FF;
  --t2:#A9BBD4;
  --t3:#6C7F9B;
  --line:rgba(140,200,255,.12);
  --glass-a:rgba(255,255,255,.07);
  --glass-b:rgba(255,255,255,.02);
  --glass-line:rgba(140,220,255,.16);
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 14px rgba(0,0,0,.35);
  --sh-2:0 18px 44px rgba(0,0,0,.5);
  --glow:0 0 24px rgba(47,216,255,.35);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;

  --bs-body-bg:#060A12;
  --bs-body-color:#EAF2FF;
  --bs-primary:#2FD8FF;
  --bs-border-radius:14px;
  --bs-border-radius-sm:10px;
  --bs-border-radius-lg:20px;
  --bs-link-color:#2FD8FF;
  --bs-link-hover-color:#7BE6FF;
  --bs-border-color:rgba(140,200,255,.12);
  --bs-font-sans-serif:var(--font-cn);
  --bs-body-font-family:var(--font-cn);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t1);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(60% 40% at 70% 0%, rgba(47,216,255,.14), transparent 70%),
    linear-gradient(rgba(140,200,255,.04) 1px, transparent 1px) 0 0/44px 44px,
    linear-gradient(90deg, rgba(140,200,255,.04) 1px, transparent 1px) 0 0/44px 44px;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .16s ease;}
a:hover{color:#7BE6FF;}
p{margin:0 0 1.15em;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--t1);}
ul{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;}

/* Bootstrap 组件覆盖 */
.navbar{background:transparent!important;--bs-navbar-color:var(--t2);--bs-navbar-hover-color:var(--t1);}
.card{background:linear-gradient(160deg,var(--glass-a),var(--glass-b));border:1px solid var(--glass-line);border-radius:var(--r-md);color:var(--t1);box-shadow:var(--sh-1);}
.badge{background:rgba(47,216,255,.1);color:var(--brand);border:1px solid rgba(47,216,255,.3);border-radius:var(--r-pill);font-weight:500;letter-spacing:.06em;padding:.35em .8em;}
.dropdown-menu{background:rgba(12,20,34,.96);border:1px solid var(--glass-line);border-radius:var(--r-md);box-shadow:var(--sh-2);}
.dropdown-item{color:var(--t2);border-radius:var(--r-sm);}
.dropdown-item:hover,.dropdown-item:focus{background:rgba(47,216,255,.1);color:var(--t1);}

.container-xxl{max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px;width:100%;}

/* 通用玻璃卡 */
.glass{
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b));
  border:1px solid var(--glass-line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1), inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
  background:transparent;
}
.site-header.is-scrolled{
  background:rgba(8,14,24,.78);
  border-bottom-color:rgba(140,220,255,.14);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:22px;
  height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--t1);}
.brand:hover{color:var(--t1);}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  background:radial-gradient(circle at 30% 20%, rgba(47,216,255,.18), rgba(47,216,255,.03));
  border:1px solid rgba(47,216,255,.28);
  box-shadow:0 0 16px rgba(47,216,255,.18);
  flex:0 0 auto;
}
.brand-copy{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:18px;font-weight:800;letter-spacing:.02em;}
.brand-name em{font-style:normal;font-size:12px;font-weight:500;color:var(--brand);margin-left:6px;letter-spacing:.12em;text-transform:lowercase;}
.brand-sub{font-size:11px;color:var(--t3);letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:26px;}
.nav-link{
  position:relative;
  color:var(--t2);font-size:15px;font-weight:500;
  padding:6px 0;
  transition:color .16s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-deep));
  border-radius:2px;opacity:0;transform:scaleX(.4);
  transition:opacity .16s ease,transform .16s ease;
  box-shadow:0 0 12px rgba(47,216,255,.6);
}
.nav-link:hover{color:var(--t1);}
.nav-link:hover::after{opacity:.6;transform:scaleX(1);}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{opacity:1;transform:scaleX(1);}
.header-cta{display:flex;align-items:center;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);
  font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
  text-decoration:none;
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;}
.btn-sm{font-size:14px;padding:8px 18px;}
.btn-accent{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#1A0C07;border-color:transparent;
  box-shadow:0 8px 22px rgba(255,122,89,.28);
}
.btn-accent:hover{color:#1A0C07;transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,122,89,.36);}
.btn-glass{
  background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));
  border-color:rgba(140,220,255,.24);
  color:var(--t1);
}
.btn-glass:hover{color:var(--t1);border-color:rgba(47,216,255,.5);transform:translateY(-2px);}
.btn-brand{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04121A;
  box-shadow:var(--glow);
}
.btn-brand:hover{color:#04121A;transform:translateY(-2px);box-shadow:0 0 30px rgba(47,216,255,.5);}
.btn-block{width:100%;}

/* 标签 */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.08em;
  color:var(--brand);
  background:rgba(47,216,255,.08);
  border:1px solid rgba(47,216,255,.3);
}
.tag-mint{color:var(--mint);background:rgba(110,231,183,.1);border-color:rgba(110,231,183,.3);}
.pill-dark{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:12px;color:var(--t1);
  background:rgba(6,10,18,.72);
  border:1px solid rgba(140,220,255,.2);
  backdrop-filter:blur(6px);
}
.pill-accent{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;color:#FFD8CE;
  background:rgba(255,122,89,.16);
  border:1px solid rgba(255,122,89,.38);
}

/* 页面主区 */
main{position:relative;z-index:1;}

/* 窄版 Hero */
.page-hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background:var(--bg-1);
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(180deg,rgba(6,10,18,.72),rgba(6,10,18,.94)),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.96;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:radial-gradient(60% 90% at 12% 100%, rgba(47,216,255,.16), transparent 68%);
  pointer-events:none;
}
.page-hero-inner{
  position:relative;z-index:1;
  min-height:280px;
  display:flex;flex-direction:column;justify-content:center;
  gap:14px;
  padding-top:46px;padding-bottom:46px;
}
.breadcrumb-nav{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--t3);
}
.breadcrumb-nav a{color:var(--t2);}
.breadcrumb-nav a:hover{color:var(--brand);}
.breadcrumb-nav .sep{color:var(--t3);opacity:.6;}
.breadcrumb-nav .current{color:var(--t3);}
.page-hero h1{
  font-size:clamp(30px,4.6vw,50px);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.01em;
  text-shadow:0 0 40px rgba(47,216,255,.22);
}
.page-hero-sub{
  font-size:16px;
  color:var(--t2);
  margin:0;
  max-width:640px;
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:6px;
}

/* 板块通用 */
.section{padding:56px 0;position:relative;}
.section-alt{background:linear-gradient(180deg,rgba(11,19,32,.72),rgba(6,10,18,.2));border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.sec-head{margin-bottom:32px;}
.eyebrow{
  display:inline-block;
  font-size:12px;letter-spacing:.16em;
  color:var(--brand);
  text-transform:uppercase;
  margin-bottom:10px;
}
.sec-title{
  position:relative;
  padding-left:16px;
  font-size:clamp(22px,3vw,32px);
  font-weight:700;
  line-height:1.3;
}
.sec-title::before{
  content:"";
  position:absolute;left:0;top:.22em;
  width:4px;height:1.12em;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  box-shadow:0 0 14px rgba(47,216,255,.4);
}
.sec-desc{margin:12px 0 0;color:var(--t2);max-width:760px;font-size:15px;}

/* Z 字交错列表 */
.zig-list{display:flex;flex-direction:column;gap:64px;}
.zig-row{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:48px;
  align-items:center;
}
.zig-row.flip{grid-template-columns:7fr 5fr;}
.zig-row.flip .zig-media{order:2;}
.zig-row.flip .zig-body{order:1;}
.zig-media{
  position:relative;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--glass-line);
  box-shadow:var(--sh-1);
  transition:box-shadow .24s ease,transform .24s ease,border-color .24s ease;
  background:var(--bg-2);
}
.zig-media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .3s ease;
}
.zig-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,0),rgba(6,10,18,.45));
  pointer-events:none;
}
.zig-row:hover .zig-media{
  transform:translateY(-3px);
  border-color:rgba(47,216,255,.4);
  box-shadow:var(--sh-2);
}
.zig-row:hover .zig-media img{transform:scale(1.04);}
.zig-media .media-badge{
  position:absolute;left:12px;top:12px;z-index:2;
}
.zig-media .media-count{
  position:absolute;right:12px;bottom:12px;z-index:2;
  font-size:12px;color:var(--t1);
}
.zig-index{
  font-size:13px;letter-spacing:.16em;color:var(--t3);
  display:block;margin-bottom:8px;
}
.zig-body h3{
  font-size:clamp(19px,2.2vw,23px);
  font-weight:600;
  line-height:1.4;
  margin:14px 0 12px;
}
.zig-body p{color:var(--t2);font-size:15px;margin-bottom:14px;}
.point-list{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.point-list li{
  position:relative;
  padding-left:18px;
  color:var(--t2);
  font-size:14px;
  line-height:1.7;
}
.point-list li::before{
  content:"";
  position:absolute;left:0;top:.62em;
  width:6px;height:6px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 8px rgba(47,216,255,.7);
}
.link-more{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.link-more i{transition:transform .18s ease;}
.link-more:hover i{transform:translateX(4px);}

/* 数据条 */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.stat{
  padding:26px 24px;
  border-radius:var(--r-lg);
  background:linear-gradient(160deg,var(--glass-a),var(--glass-b));
  border:1px solid var(--glass-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.stat:hover{transform:translateY(-3px);border-color:rgba(47,216,255,.4);box-shadow:var(--sh-2);}
.stat-num{
  font-size:clamp(40px,5.4vw,60px);
  font-weight:800;
  line-height:1.05;
  letter-spacing:-.02em;
  color:var(--brand);
  font-variant-numeric:tabular-nums;
  text-shadow:0 0 26px rgba(47,216,255,.32);
}
.stat-num small{font-size:.42em;font-weight:600;margin-left:4px;color:var(--t2);}
.stat-label{margin-top:6px;font-size:15px;font-weight:600;color:var(--t1);}
.stat-desc{margin-top:6px;font-size:13px;color:var(--t3);line-height:1.7;}

/* 流程步卡 */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.step{
  position:relative;
  padding:26px 22px;
  border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border:1px solid var(--glass-line);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.step:hover{transform:translateY(-3px);border-color:rgba(47,216,255,.42);box-shadow:var(--sh-2);}
.step-num{
  font-size:44px;
  font-weight:800;
  line-height:1;
  color:rgba(47,216,255,.32);
  letter-spacing:-.03em;
  margin-bottom:12px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.step p{font-size:14px;color:var(--t2);margin:0;line-height:1.75;}

/* 横向滑动轨道 */
.rail{
  display:flex;
  gap:16px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding-bottom:10px;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail > *{scroll-snap-align:start;flex:0 0 auto;}
.rail-wrap{position:relative;}
.rail-wrap::before,
.rail-wrap::after{
  content:"";
  position:absolute;top:0;bottom:14px;width:48px;
  pointer-events:none;z-index:2;
}
.rail-wrap::before{left:0;background:linear-gradient(90deg,var(--bg-0),rgba(6,10,18,0));}
.rail-wrap::after{right:0;background:linear-gradient(270deg,var(--bg-0),rgba(6,10,18,0));}
.section-alt .rail-wrap::before{background:linear-gradient(90deg,#0A1220,rgba(10,18,32,0));}
.section-alt .rail-wrap::after{background:linear-gradient(270deg,#0A1220,rgba(10,18,32,0));}

.review-card{
  width:300px;
  padding:20px;
  border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border:1px solid var(--glass-line);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.review-card:hover{transform:translateY(-3px);border-color:rgba(47,216,255,.4);box-shadow:var(--sh-2);}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{
  width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:700;color:#04121A;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  flex:0 0 auto;
}
.review-name{font-size:14px;font-weight:600;color:var(--t1);}
.review-time{font-size:12px;color:var(--t3);}
.stars{display:flex;gap:3px;color:var(--accent);font-size:12px;margin-bottom:10px;}
.stars .mint{color:var(--mint);}
.review-text{font-size:14px;color:var(--t2);line-height:1.75;margin:0;}

/* FAQ */
.accordion{--bs-accordion-bg:transparent;--bs-accordion-border-color:transparent;}
.accordion-item{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015))!important;
  border:1px solid var(--glass-line)!important;
  border-radius:var(--r-md)!important;
  margin-bottom:10px;
  overflow:hidden;
  transition:border-color .22s ease;
}
.accordion-item:hover{border-color:rgba(47,216,255,.34)!important;}
.accordion-button{
  background:transparent!important;
  color:var(--t1)!important;
  font-size:16px;
  font-weight:600;
  padding:18px 20px;
  box-shadow:none!important;
  border-radius:var(--r-md)!important;
  transition:background .2s ease,color .2s ease;
}
.accordion-button:not(.collapsed){
  color:var(--brand)!important;
  background:rgba(47,216,255,.06)!important;
  box-shadow:inset 3px 0 0 var(--brand),inset 12px 0 22px -18px rgba(47,216,255,.9)!important;
}
.accordion-button::after{
  content:"+";
  background-image:none!important;
  width:auto;height:auto;
  font-size:22px;
  line-height:1;
  color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  transform:none;
  transition:transform .18s ease;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.accordion-body{
  padding:0 20px 20px;
  color:var(--t2);
  font-size:15px;
  line-height:1.8;
}

/* 表单 */
.form-control{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(140,220,255,.18);
  color:var(--t1);
  border-radius:var(--r-sm);
  height:48px;
  font-size:15px;
  box-shadow:none;
}
.form-control::placeholder{color:var(--t3);}
.form-control:focus{
  background:rgba(255,255,255,.06);
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(47,216,255,.25);
  color:var(--t1);
}
.form-hint{font-size:12px;color:var(--t3);margin-top:8px;}

/* 底部转化区 */
.cta-panel{
  padding:40px;
  border-radius:var(--r-lg);
  background:
    radial-gradient(80% 120% at 100% 0%, rgba(255,122,89,.12), transparent 60%),
    linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--glass-line);
  box-shadow:var(--sh-2), inset 0 1px 0 rgba(255,255,255,.08);
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:36px;
  align-items:center;
}
.cta-panel h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;line-height:1.35;}
.cta-panel p{color:var(--t2);margin:12px 0 0;font-size:15px;}
.cta-form{display:flex;gap:10px;}
.cta-form .form-control{flex:1;}

/* 页脚 */
.site-footer{
  position:relative;z-index:1;
  margin-top:0;
  background:#04070D;
  border-top:1px solid var(--line);
  padding-top:56px;
}
.site-footer::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,216,255,.6),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.1fr;
  gap:32px;
  padding-bottom:40px;
}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{color:var(--t3);font-size:14px;margin:0 0 16px;max-width:280px;}
.footer-btn{margin-top:4px;}
.footer-col h3{
  font-size:14px;font-weight:600;color:var(--t1);
  margin-bottom:14px;letter-spacing:.04em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{color:var(--t2);font-size:14px;}
.footer-col a:hover{color:var(--brand);}
.footer-note{color:var(--t3);font-size:13px;line-height:1.9;margin:0;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:18px 0 22px;
  border-top:1px solid var(--line);
  color:var(--t3);
  font-size:13px;
}

/* 移动端底部 Tab */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  display:none;
  height:60px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(8,14,24,.88);
  border-top:1px solid rgba(140,220,255,.14);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.tab-item{
  flex:1;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  color:var(--t3);
  font-size:11px;
  letter-spacing:.02em;
  transition:color .18s ease;
}
.tab-item i{font-size:19px;line-height:1;}
.tab-item:hover{color:var(--t2);}
.tab-item.active{color:var(--brand);}
.tab-item.active i{filter:drop-shadow(0 0 6px rgba(47,216,255,.75));}

/* 响应式 */
@media (max-width:1199.98px){
  .footer-grid{grid-template-columns:1.3fr 1fr 1fr;gap:28px;}
  .footer-col:last-child{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  .main-nav{display:none;}
  .header-cta{display:none;}
  .mobile-tabbar{display:flex;}
  body{padding-bottom:76px;}
  .zig-row,
  .zig-row.flip{grid-template-columns:1fr;gap:22px;}
  .zig-row.flip .zig-media{order:0;}
  .zig-row.flip .zig-body{order:1;}
  .zig-list{gap:48px;}
  .stat-strip{grid-template-columns:1fr;gap:14px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .cta-panel{grid-template-columns:1fr;gap:24px;padding:30px 24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-col:last-child{grid-column:1 / -1;}
  .glass{backdrop-filter:none;-webkit-backdrop-filter:none;background:var(--bg-2);}
}
@media (max-width:767.98px){
  .section{padding:56px 0;}
  .page-hero-inner{min-height:240px;padding-top:34px;padding-bottom:34px;}
  .review-card{width:78vw;}
  .rail-wrap::before,.rail-wrap::after{width:26px;}
}
@media (max-width:575.98px){
  .header-inner{height:64px;}
  .brand-name{font-size:16px;}
  .brand-sub{font-size:10px;}
  .steps{grid-template-columns:1fr;}
  .cta-form{flex-direction:column;}
  .cta-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{justify-content:flex-start;}
  .zig-body h3{margin-top:12px;}
}
@media (min-width:1400px){
  .container-xxl{max-width:1200px;}
}

/* roulang page: category2 */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1320;
  --bg-2:#101B2E;
  --brand:#2FD8FF;
  --brand-deep:#0E8FB8;
  --accent:#FF7A59;
  --accent-2:#FFB35C;
  --mint:#6EE7B7;
  --t1:#EAF2FF;
  --t2:#A9BBD4;
  --t3:#6C7F9B;
  --line:rgba(140,200,255,.12);
  --line-strong:rgba(140,220,255,.16);
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 14px rgba(0,0,0,.35);
  --sh-2:0 18px 44px rgba(0,0,0,.5);
  --glow:0 0 24px rgba(47,216,255,.35);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;

  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--t1);
  --bs-primary:var(--brand);
  --bs-border-radius:var(--r-md);
  --bs-border-radius-sm:var(--r-sm);
  --bs-border-radius-lg:var(--r-lg);
  --bs-link-color:var(--brand);
  --bs-link-hover-color:#8AEBFF;
  --bs-border-color:var(--line);
  --bs-font-sans-serif:var(--font-cn);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  color:var(--t1);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(60% 40% at 70% 0%, rgba(47,216,255,.14), transparent 70%),
    linear-gradient(rgba(140,200,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,200,255,.03) 1px, transparent 1px);
  background-size:100% 100%, 48px 48px, 48px 48px;
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease, opacity .18s ease;}
a:hover{color:#8AEBFF;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
h1,h2,h3{margin:0;line-height:1.25;letter-spacing:-.01em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
a:focus-visible,button:focus-visible,.accordion-button:focus-visible{
  outline:2px solid var(--brand);
  outline-offset:2px;
  border-radius:var(--r-sm);
}

.container-xxl{max-width:1200px;padding-left:20px;padding-right:20px;margin-left:auto;margin-right:auto;}
.cat-wrap{max-width:1080px;margin-left:auto;margin-right:auto;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  border-bottom:1px solid transparent;
  background:transparent;
  transition:background-color .3s ease, border-color .3s ease, backdrop-filter .3s ease;
}
.site-header.scrolled{
  background:rgba(8,14,24,.84);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom-color:rgba(140,220,255,.14);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--t1);}
.brand:hover{color:var(--t1);}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(160deg,rgba(47,216,255,.16),rgba(47,216,255,.02));
  border:1px solid rgba(47,216,255,.28);
  box-shadow:var(--glow);
  flex:0 0 auto;
}
.brand-copy{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:18px;font-weight:800;letter-spacing:.02em;}
.brand-name em{font-style:normal;font-size:12px;font-weight:600;letter-spacing:.12em;color:var(--brand);margin-left:6px;text-transform:uppercase;}
.brand-sub{font-size:11px;color:var(--t3);letter-spacing:.04em;}

.main-nav{display:none;}
.header-cta{margin-left:auto;display:flex;align-items:center;gap:10px;}

@media (min-width:992px){
  .main-nav{display:flex;align-items:center;gap:6px;margin-left:28px;}
  .nav-link{
    position:relative;
    padding:8px 14px;
    font-size:15px;
    color:var(--t2);
    border-radius:var(--r-sm);
    transition:color .16s ease;
  }
  .nav-link::after{
    content:"";
    position:absolute;left:14px;right:14px;bottom:2px;height:2px;
    border-radius:2px;
    background:linear-gradient(90deg,var(--brand),var(--brand-deep));
    box-shadow:var(--glow);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .16s ease;
  }
  .nav-link:hover{color:var(--t1);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--brand);font-weight:600;}
  .nav-link.active::after{transform:scaleX(1);}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-weight:600;
  font-size:15px;
  padding:12px 24px;
  line-height:1.2;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease, color .2s ease, background-color .2s ease;
}
.btn:active{transform:translateY(0) scale(.99);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-accent{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#1B0D06;
  box-shadow:0 8px 24px rgba(255,122,89,.26);
}
.btn-accent:hover{color:#1B0D06;transform:translateY(-2px);box-shadow:0 12px 30px rgba(255,122,89,.4);}
.btn-brand{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#04131C;
  box-shadow:var(--glow);
}
.btn-brand:hover{color:#04131C;transform:translateY(-2px);box-shadow:0 0 32px rgba(47,216,255,.5);}
.btn-glass{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border-color:var(--line-strong);
  color:var(--t1);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.btn-glass:hover{border-color:rgba(47,216,255,.5);color:var(--brand);transform:translateY(-2px);}
.btn[disabled],.btn.disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- Badges / tags ---------- */
.badge-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--brand);
  background:rgba(47,216,255,.1);
  border:1px solid rgba(47,216,255,.28);
}
.badge-mint{
  color:var(--mint);
  background:rgba(110,231,183,.1);
  border-color:rgba(110,231,183,.3);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;
  color:var(--brand);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:18px;height:1px;background:var(--brand);box-shadow:var(--glow);
}

/* ---------- Page hero ---------- */
.page-hero{
  position:relative;
  padding:52px 0 46px;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(180deg, rgba(6,10,18,.72), rgba(6,10,18,.94)),
    url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  overflow:hidden;
}
@media (min-width:992px){
  .page-hero{padding:64px 0 58px;}
}
.breadcrumb-nav{
  display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--t3);
  margin-bottom:20px;
  flex-wrap:wrap;
}
.breadcrumb-nav a{color:var(--t2);}
.breadcrumb-nav a:hover{color:var(--brand);}
.breadcrumb-nav .current{color:var(--t3);}
.page-hero h1{
  font-size:30px;
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.01em;
}
@media (min-width:768px){ .page-hero h1{font-size:40px;} }
@media (min-width:992px){ .page-hero h1{font-size:50px;} }
.hero-sub{
  margin-top:14px;
  font-size:16px;
  color:var(--t2);
  max-width:640px;
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:22px;
}

/* ---------- Section ---------- */
.section{padding:56px 0;}
@media (min-width:768px){ .section{padding:72px 0;} }
@media (min-width:992px){ .section{padding:96px 0;} }

.section-head{margin-bottom:32px;}
.section-head .eyebrow{margin-bottom:10px;}
.section-title{
  position:relative;
  padding-left:16px;
  font-size:22px;
  font-weight:700;
}
.section-title::before{
  content:"";
  position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));
  box-shadow:var(--glow);
}
@media (min-width:768px){ .section-title{font-size:32px;} }
.section-desc{
  margin-top:12px;
  padding-left:16px;
  color:var(--t2);
  font-size:15px;
  max-width:720px;
}

/* ---------- Cards ---------- */
.glass-card{
  height:100%;
  padding:24px;
  border-radius:var(--r-lg);
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--sh-1), inset 0 1px 0 rgba(255,255,255,.08);
  transition:transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.glass-card:hover{
  transform:translateY(-3px);
  border-color:rgba(47,216,255,.4);
  box-shadow:var(--sh-2);
}
.card-icon{
  width:44px;height:44px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:18px;color:var(--brand);
  background:rgba(47,216,255,.1);
  border:1px solid rgba(47,216,255,.26);
  margin-bottom:16px;
}
.glass-card h3{
  font-size:18px;
  font-weight:600;
  margin-bottom:10px;
}
.glass-card p{color:var(--t2);font-size:15px;margin-bottom:0;}
.card-media{
  border-radius:var(--r-md);
  overflow:hidden;
  margin-bottom:16px;
  aspect-ratio:16/9;
  border:1px solid var(--line);
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease;}
.glass-card:hover .card-media img{transform:scale(1.04);}

/* ---------- Timeline ---------- */
.timeline{position:relative;}
.timeline::before{
  content:"";
  position:absolute;
  left:19px;top:10px;bottom:10px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg, rgba(47,216,255,.75), rgba(47,216,255,.28) 55%, rgba(47,216,255,0));
}
.tl-item{
  position:relative;
  padding-left:58px;
  padding-bottom:44px;
}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;
  left:8px;top:4px;
  width:24px;height:24px;
  border-radius:50%;
  background:var(--bg-0);
  border:2px solid var(--brand);
  box-shadow:var(--glow);
}
.tl-dot::after{
  content:"";
  position:absolute;inset:6px;
  border-radius:50%;
  background:var(--brand);
}
.tl-num{
  font-size:48px;
  font-weight:800;
  line-height:1;
  letter-spacing:-.02em;
  color:rgba(47,216,255,.3);
  font-variant-numeric:tabular-nums;
  margin-bottom:6px;
}
.tl-label{
  font-size:12px;
  letter-spacing:.12em;
  color:var(--t3);
  margin-bottom:14px;
}
.tl-card{
  display:grid;
  gap:20px;
  grid-template-columns:1fr;
  padding:22px;
  border-radius:var(--r-lg);
  border:1px solid var(--line-strong);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  box-shadow:var(--sh-1), inset 0 1px 0 rgba(255,255,255,.08);
  transition:transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.tl-card:hover{
  transform:translateY(-3px);
  border-color:rgba(47,216,255,.4);
  box-shadow:var(--sh-2);
}
.tl-card h3{font-size:19px;font-weight:600;margin-bottom:10px;}
.tl-card p{color:var(--t2);font-size:15px;margin-bottom:0;}
.tl-pic{
  border-radius:var(--r-md);
  overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid var(--line);
  order:-1;
}
.tl-pic img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease;}
.tl-card:hover .tl-pic img{transform:scale(1.04);}
@media (min-width:768px){
  .tl-card{grid-template-columns:1fr 240px;align-items:center;padding:24px;}
  .tl-pic{order:0;}
}
@media (max-width:767.98px){
  .timeline::before{left:5px;}
  .tl-item{padding-left:20px;padding-bottom:36px;}
  .tl-dot{left:-3px;width:16px;height:16px;top:6px;}
  .tl-dot::after{inset:4px;}
  .tl-num{font-size:40px;}
  .tl-card{
    -webkit-backdrop-filter:none;
    backdrop-filter:none;
    background:var(--bg-2);
  }
}

/* ---------- Checklist ---------- */
.check-list{
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.01));
  overflow:hidden;
}
.check-item{
  display:flex;
  align-items:flex-start;
  gap:16px;
  padding:20px 22px;
  border-bottom:1px solid var(--line);
  transition:background-color .2s ease, padding-left .2s ease;
}
.check-item:last-child{border-bottom:0;}
.check-item:hover{background:rgba(47,216,255,.05);padding-left:26px;}
.check-idx{
  flex:0 0 auto;
  width:30px;height:30px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
  font-size:13px;font-weight:700;
  color:var(--brand);
  background:rgba(47,216,255,.1);
  border:1px solid rgba(47,216,255,.3);
  font-variant-numeric:tabular-nums;
}
.check-body{flex:1 1 auto;min-width:0;}
.check-body strong{
  display:block;
  font-size:16px;
  font-weight:600;
  color:var(--t1);
  margin-bottom:4px;
}
.check-body span{font-size:14px;color:var(--t2);}
.check-arrow{
  flex:0 0 auto;
  color:var(--t3);
  font-size:14px;
  transition:color .2s ease, transform .2s ease;
  align-self:center;
}
.check-item:hover .check-arrow{color:var(--brand);transform:translateX(3px);}

/* ---------- FAQ ---------- */
.accordion-item{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02)) !important;
  border:1px solid var(--line-strong) !important;
  border-radius:var(--r-md) !important;
  margin-bottom:10px;
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.accordion-item:last-child{margin-bottom:0;}
.accordion-button{
  position:relative;
  background:transparent !important;
  color:var(--t1) !important;
  font-size:16px;
  font-weight:600;
  padding:18px 20px 18px 22px;
  box-shadow:none !important;
  border-radius:var(--r-md) !important;
}
.accordion-button::before{
  content:"";
  position:absolute;left:0;top:14px;bottom:14px;width:3px;
  border-radius:0 2px 2px 0;
  background:var(--brand);
  box-shadow:var(--glow);
  opacity:0;
  transition:opacity .18s ease;
}
.accordion-button:not(.collapsed){
  color:var(--brand) !important;
  background:rgba(47,216,255,.06) !important;
}
.accordion-button:not(.collapsed)::before{opacity:1;}
.accordion-button::after{
  width:12px;height:12px;
  background-image:none !important;
  border-right:2px solid var(--brand);
  border-bottom:2px solid var(--brand);
  transform:rotate(45deg);
  transition:transform .18s ease;
  margin-top:-4px;
}
.accordion-button:not(.collapsed)::after{transform:rotate(-135deg);margin-top:2px;}
.accordion-body{
  padding:0 22px 20px;
  font-size:15px;
  line-height:1.8;
  color:var(--t2);
}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;
  padding:44px 28px;
  border-radius:var(--r-lg);
  border:1px solid rgba(47,216,255,.28);
  background:
    linear-gradient(160deg, rgba(47,216,255,.12), rgba(14,143,184,.04)),
    var(--bg-1);
  box-shadow:var(--sh-2);
  overflow:hidden;
  text-align:center;
}
.cta-panel::after{
  content:"";
  position:absolute;
  top:-60%;right:-10%;
  width:320px;height:320px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(47,216,255,.2), transparent 70%);
  pointer-events:none;
}
.cta-panel h2{
  position:relative;
  font-size:24px;
  font-weight:700;
  padding-left:0;
  margin-bottom:14px;
}
.cta-panel h2::before{display:none;}
.cta-panel p{
  position:relative;
  color:var(--t2);
  font-size:15px;
  max-width:620px;
  margin:0 auto 26px;
}
.cta-actions{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:center;
}
@media (min-width:768px){ .cta-panel{padding:56px 48px;} .cta-panel h2{font-size:30px;} }
@media (max-width:575.98px){ .cta-actions .btn{width:100%;} }

/* ---------- Footer ---------- */
.site-footer{
  margin-top:24px;
  padding-top:56px;
  background:linear-gradient(180deg, rgba(4,7,13,.94), rgba(4,7,13,1));
  border-top:1px solid rgba(47,216,255,.18);
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(47,216,255,.5), transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  padding-bottom:40px;
}
@media (min-width:768px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 28px;}
}
@media (min-width:992px){
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{color:var(--t2);font-size:14px;max-width:300px;}
.footer-btn{margin-top:16px;}
.footer-col h3{
  font-size:14px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--t1);
  margin-bottom:16px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{color:var(--t2);font-size:14px;}
.footer-col ul li a:hover{color:var(--brand);}
.footer-note{color:var(--t3);font-size:13px;line-height:1.9;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  align-items:center;
  padding:20px 0 28px;
  border-top:1px solid var(--line);
  color:var(--t3);
  font-size:13px;
}

/* ---------- Mobile tab bar ---------- */
.mobile-tab{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1040;
  display:flex;
  align-items:stretch;
  justify-content:space-around;
  height:60px;
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(10,18,30,.92);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-top:1px solid rgba(140,220,255,.14);
}
.tab-item{
  flex:1 1 0;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:11px;
  color:var(--t3);
  position:relative;
  transition:color .18s ease;
}
.tab-item i{font-size:19px;line-height:1;}
.tab-item span{font-size:11px;}
.tab-item.active{color:var(--brand);}
.tab-item.active i::after{
  content:"";
  position:absolute;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px rgba(47,216,255,.9);
  top:0;left:50%;
  transform:translateX(-50%);
}
.tab-item:hover{color:var(--t1);}
@media (min-width:992px){ .mobile-tab{display:none;} }
@media (max-width:991.98px){
  body{padding-bottom:78px;}
  .glass-card{-webkit-backdrop-filter:none;backdrop-filter:none;background:var(--bg-2);}
  .btn-glass{-webkit-backdrop-filter:none;backdrop-filter:none;background:var(--bg-2);}
}

/* ---------- Utility ---------- */
.grid-3{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
@media (min-width:768px){ .grid-3{grid-template-columns:repeat(2,1fr);} }
@media (min-width:992px){ .grid-3{grid-template-columns:repeat(3,1fr);gap:20px;} }
@media (max-width:575.98px){ .grid-3{gap:14px;} }

/* roulang page: category3 */
:root{
  --bg-0:#060A12; --bg-1:#0B1320; --bg-2:#101B2E;
  --brand:#2FD8FF; --brand-deep:#0E8FB8; --accent:#FF7A59; --accent-2:#FFB35C; --mint:#6EE7B7;
  --t1:#EAF2FF; --t2:#A9BBD4; --t3:#6C7F9B; --line:rgba(140,200,255,.12);
  --r-sm:10px; --r-md:14px; --r-lg:20px; --r-pill:999px;
  --sh-1:0 4px 14px rgba(0,0,0,.35); --sh-2:0 18px 44px rgba(0,0,0,.5);
  --glow:0 0 24px rgba(47,216,255,.35);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-body-bg:var(--bg-0); --bs-body-color:var(--t1);
  --bs-primary:#2FD8FF; --bs-primary-rgb:47,216,255;
  --bs-border-radius:14px; --bs-border-color:rgba(140,200,255,.16);
  --bs-link-color:#2FD8FF; --bs-link-hover-color:#7FE7FF;
  --bs-font-sans-serif:var(--font-cn);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg-0);color:var(--t1);
  font-family:var(--font-cn);font-size:16px;line-height:1.8;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(60% 40% at 70% 0%, rgba(47,216,255,.14), transparent 70%),
    linear-gradient(rgba(140,200,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,200,255,.04) 1px, transparent 1px);
  background-size:auto,56px 56px,56px 56px;
}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s ease;}
a:hover{color:#7FE7FF;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
h1,h2,h3,h4{margin:0;color:var(--t1);line-height:1.3;}
ul{list-style:none;margin:0;padding:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container-xxl{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
.site-header,.site-footer,main{position:relative;z-index:1;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,backdrop-filter .28s ease;
}
.site-header.is-scrolled{
  background:linear-gradient(180deg, rgba(11,19,32,.82), rgba(6,10,18,.72));
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid rgba(140,220,255,.14);
}
.header-inner{display:flex;align-items:center;gap:22px;height:74px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--t1);flex:0 0 auto;}
.brand:hover{color:var(--t1);}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;
  border-radius:12px;background:rgba(47,216,255,.08);
  border:1px solid rgba(47,216,255,.3);box-shadow:0 0 18px rgba(47,216,255,.22);
}
.brand-copy{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:19px;font-weight:800;letter-spacing:.02em;}
.brand-name em{font-style:normal;font-size:11px;letter-spacing:.2em;color:var(--brand);margin-left:6px;text-transform:uppercase;}
.brand-sub{font-size:11px;color:var(--t3);letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;padding:10px 14px;font-size:15px;color:var(--t2);border-radius:var(--r-sm);
}
.nav-link:hover{color:var(--t1);}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--brand-deep));
  transform:scaleX(0);transform-origin:left;transition:transform .16s ease;
}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{transform:scaleX(1);box-shadow:0 0 10px rgba(47,216,255,.55);}
.header-cta{flex:0 0 auto;margin-left:6px;}

/* ---------- 按钮 ---------- */
.btn{border-radius:var(--r-pill);font-weight:600;letter-spacing:.02em;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;}
.btn-accent{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#22100A;border:none;padding:10px 22px;box-shadow:0 10px 24px rgba(255,122,89,.28);
}
.btn-accent:hover,.btn-accent:focus{color:#22100A;transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,122,89,.38);}
.btn-glass{
  background:linear-gradient(160deg, rgba(255,255,255,.08), rgba(255,255,255,.02));
  border:1px solid rgba(140,220,255,.22);color:var(--t1);padding:10px 22px;
}
.btn-glass:hover,.btn-glass:focus{color:var(--t1);border-color:rgba(47,216,255,.5);transform:translateY(-2px);}
.btn-brand{
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#04141C;border:none;padding:10px 22px;
  box-shadow:0 10px 24px rgba(47,216,255,.24);
}
.btn-brand:hover,.btn-brand:focus{color:#04141C;transform:translateY(-2px);}
.btn-sm{padding:8px 16px;font-size:14px;}
.btn-lg{padding:14px 30px;font-size:16px;}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;}

/* ---------- 面包屑与页首 ---------- */
.page-hero{
  position:relative;padding:78px 0 52px;overflow:hidden;
  background-image:linear-gradient(180deg, rgba(6,10,18,.72), rgba(6,10,18,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;border-bottom:1px solid var(--line);
}
.breadcrumb-nav{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:18px;flex-wrap:nowrap;overflow:hidden;}
.breadcrumb-nav a{color:var(--t2);}
.breadcrumb-nav a:hover{color:var(--brand);}
.breadcrumb-nav .current{color:var(--t3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.page-hero h1{
  font-size:clamp(30px,6vw,52px);font-weight:800;letter-spacing:-.01em;line-height:1.18;
  text-shadow:0 0 34px rgba(47,216,255,.25);
}
.page-hero .hero-sub{margin-top:14px;font-size:16px;color:var(--t2);max-width:620px;}
.hero-chip{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;margin-bottom:16px;
  border-radius:var(--r-pill);font-size:12px;letter-spacing:.08em;color:var(--brand);
  background:rgba(47,216,255,.1);border:1px solid rgba(47,216,255,.3);
}
.hero-chip i{font-size:11px;}

/* ---------- 数据条 ---------- */
.stat-strip{padding:26px 0;border-bottom:1px solid var(--line);background:rgba(11,19,32,.55);}
.stat-row{display:flex;flex-wrap:wrap;gap:18px 0;}
.stat-item{flex:1 1 200px;display:flex;flex-direction:column;gap:2px;padding-right:22px;}
.stat-item + .stat-item{border-left:1px solid var(--line);padding-left:24px;}
.stat-num{font-size:38px;font-weight:800;line-height:1.1;color:var(--brand);font-variant-numeric:tabular-nums;text-shadow:0 0 20px rgba(47,216,255,.32);}
.stat-num em{font-size:15px;font-style:normal;font-weight:600;color:var(--t2);margin-left:4px;text-shadow:none;}
.stat-label{font-size:13px;color:var(--t3);}

/* ---------- 板块标题 ---------- */
.section{padding:80px 0;}
.section-head{margin-bottom:34px;max-width:760px;}
.section-eyebrow{font-size:12px;letter-spacing:.16em;color:var(--brand);margin-bottom:10px;text-transform:uppercase;}
.section-title{position:relative;padding-left:16px;font-size:clamp(22px,3.4vw,32px);font-weight:700;letter-spacing:-.01em;}
.section-title::before{
  content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--brand-deep));box-shadow:0 0 12px rgba(47,216,255,.45);
}
.section-desc{margin-top:14px;color:var(--t2);font-size:15px;}

/* ---------- 全宽大图堆叠 ---------- */
.stack-list{display:flex;flex-direction:column;gap:32px;}
.stack-item{
  display:block;position:relative;border-radius:var(--r-lg);overflow:hidden;
  background:var(--bg-1);border:1px solid rgba(140,220,255,.14);box-shadow:var(--sh-1);
  transition:border-color .24s ease,box-shadow .24s ease,transform .24s ease;
}
.stack-item:hover,.stack-item:focus-visible{
  border-color:rgba(47,216,255,.42);box-shadow:var(--sh-2);transform:translateY(-3px);color:inherit;
}
.stack-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-2);}
.stack-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease,filter .3s ease;}
.stack-media::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:64%;
  background:linear-gradient(180deg, rgba(6,10,18,0), rgba(6,10,18,.86));
}
.stack-item:hover .stack-media img{transform:scale(1.04);filter:brightness(1.08);}
.stack-bar{
  position:absolute;left:18px;right:18px;bottom:18px;z-index:2;
  display:flex;align-items:center;gap:16px;padding:16px 18px;border-radius:var(--r-md);
  background:linear-gradient(160deg, rgba(16,27,46,.78), rgba(11,19,32,.62));
  border:1px solid rgba(140,220,255,.2);
  backdrop-filter:blur(16px) saturate(140%);
  transition:transform .24s ease,border-color .24s ease;
}
.stack-item:hover .stack-bar{transform:translateY(-4px);border-color:rgba(47,216,255,.45);}
.stack-tag{
  flex:0 0 auto;padding:5px 12px;border-radius:var(--r-pill);font-size:12px;letter-spacing:.06em;
  color:var(--brand);background:rgba(47,216,255,.12);border:1px solid rgba(47,216,255,.28);
}
.stack-title{
  flex:1 1 auto;font-size:clamp(16px,2vw,19px);font-weight:600;line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.stack-meta{flex:0 0 auto;font-size:13px;color:var(--t3);font-variant-numeric:tabular-nums;}
.stack-arrow{
  flex:0 0 auto;width:38px;height:38px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);border:1px solid rgba(47,216,255,.35);background:rgba(47,216,255,.08);
  transition:background .2s ease,transform .2s ease;
}
.stack-item:hover .stack-arrow{background:rgba(47,216,255,.2);transform:translateX(3px);}

/* ---------- 节奏两栏 ---------- */
.rhythm-grid{display:grid;grid-template-columns:5fr 6fr;gap:48px;align-items:start;}
.rhythm-lead p{color:var(--t2);font-size:16px;}
.rhythm-highlight{
  margin-top:24px;padding:20px 22px;border-radius:var(--r-md);
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  border:1px solid rgba(140,220,255,.16);
}
.rhythm-highlight strong{display:block;font-size:15px;color:var(--t1);margin-bottom:6px;}
.rhythm-highlight span{font-size:14px;color:var(--t2);}
.rhythm-list{border-top:1px solid var(--line);}
.rhythm-row{
  display:flex;align-items:flex-start;gap:18px;padding:20px 4px;border-bottom:1px solid var(--line);
  transition:background .2s ease,padding-left .2s ease;
}
.rhythm-row:hover{background:rgba(47,216,255,.05);padding-left:10px;}
.rhythm-num{
  flex:0 0 auto;width:42px;font-size:22px;font-weight:800;line-height:1.4;color:rgba(47,216,255,.5);
  font-variant-numeric:tabular-nums;
}
.rhythm-body h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.rhythm-body p{font-size:14px;color:var(--t2);margin:0;}
.rhythm-badge{
  display:inline-block;margin-top:8px;padding:3px 10px;border-radius:var(--r-pill);
  font-size:12px;color:var(--mint);border:1px solid rgba(110,231,183,.35);background:rgba(110,231,183,.08);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;}
.accordion-item{
  background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  border:1px solid rgba(140,220,255,.16);border-radius:var(--r-md);margin-bottom:10px;overflow:hidden;
  transition:border-color .2s ease;
}
.accordion-item:hover{border-color:rgba(47,216,255,.32);}
.accordion-item:has(.accordion-button:not(.collapsed)){border-color:rgba(47,216,255,.4);}
.accordion-button{
  background:transparent;color:var(--t1);font-size:16px;font-weight:600;padding:18px 20px 18px 22px;
  box-shadow:none;border-radius:var(--r-md) !important;
}
.accordion-button:not(.collapsed){color:var(--brand);background:transparent;box-shadow:none;}
.accordion-button:focus{border-color:transparent;box-shadow:none;}
.accordion-button::after{
  content:"+";background-image:none;width:24px;height:24px;flex:0 0 24px;
  display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:400;
  color:var(--brand);margin-left:auto;transition:transform .18s ease;
}
.accordion-button:not(.collapsed)::after{content:"×";transform:rotate(180deg);}
.accordion-body{padding:0 22px 20px;color:var(--t2);font-size:15px;line-height:1.8;border-left:3px solid transparent;}
.accordion-item:has(.accordion-button:not(.collapsed)) .accordion-body{
  border-left:3px solid var(--brand);box-shadow:inset 2px 0 8px rgba(47,216,255,.1);
}

/* ---------- CTA ---------- */
.cta-section{padding:20px 0 90px;}
.cta-panel{
  position:relative;overflow:hidden;border-radius:var(--r-lg);padding:52px 44px;
  background-image:linear-gradient(180deg, rgba(6,10,18,.78), rgba(6,10,18,.94)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  border:1px solid rgba(140,220,255,.18);box-shadow:var(--sh-2);
}
.cta-panel h2{font-size:clamp(22px,3.2vw,30px);font-weight:700;margin-bottom:14px;}
.cta-panel p{color:var(--t2);max-width:640px;font-size:15px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#04070D;border-top:1px solid var(--line);padding:64px 0 28px;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(47,216,255,.6), transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:38px;padding-bottom:40px;}
.footer-brand p{font-size:14px;color:var(--t2);margin:16px 0 18px;max-width:320px;}
.footer-btn{font-size:14px;}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--t1);}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:var(--t2);}
.footer-col ul li a:hover{color:var(--brand);}
.footer-note{font-size:13px;color:var(--t3);line-height:1.9;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding-top:22px;border-top:1px solid var(--line);font-size:12px;color:var(--t3);
}

/* ---------- 移动端底部 Tab ---------- */
.mobile-tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:1050;display:none;
  padding-bottom:env(safe-area-inset-bottom);
  background:linear-gradient(180deg, rgba(11,19,32,.9), rgba(4,7,13,.97));
  border-top:1px solid rgba(140,220,255,.16);
  backdrop-filter:blur(16px) saturate(140%);
}
.tab-inner{display:flex;height:60px;}
.tab-item{
  position:relative;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:2px;color:var(--t3);font-size:11px;
}
.tab-item i{font-size:22px;position:relative;z-index:1;}
.tab-item span{position:relative;z-index:1;}
.tab-item.active{color:var(--brand);}
.tab-item.active::before{
  content:"";position:absolute;top:6px;width:28px;height:28px;border-radius:50%;
  background:radial-gradient(circle, rgba(47,216,255,.35), transparent 70%);
}
.tab-item.active i{text-shadow:0 0 10px rgba(47,216,255,.7);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-col:last-child{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  body{padding-bottom:78px;}
  .main-nav{display:none;}
  .mobile-tabbar{display:block;}
  .section{padding:58px 0;}
  .rhythm-grid{grid-template-columns:1fr;gap:30px;}
  .stack-bar{gap:12px;padding:14px;}
  .stack-media{aspect-ratio:16/9;}
}
@media (max-width:767.98px){
  .container-xxl{padding:0 16px;}
  .header-inner{height:66px;gap:12px;}
  .brand-sub{display:none;}
  .page-hero{padding:56px 0 40px;}
  .page-hero .hero-sub{font-size:15px;}
  .stat-item{flex:1 1 100%;padding:14px 0;border-left:none !important;border-bottom:1px solid var(--line);}
  .stat-item:last-child{border-bottom:none;}
  .stack-list{gap:22px;}
  .stack-item{border-radius:var(--r-md);}
  .stack-media::after{display:none;}
  .stack-bar{
    position:static;left:auto;right:auto;bottom:auto;transform:none;
    flex-wrap:wrap;background:var(--bg-2);backdrop-filter:none;border:none;
    border-top:1px solid rgba(140,220,255,.16);border-radius:0;padding:16px;
  }
  .stack-item:hover .stack-bar{transform:none;}
  .stack-title{flex:1 1 100%;order:2;font-size:16px;}
  .stack-tag{order:1;}
  .stack-meta{order:3;font-size:12px;}
  .stack-arrow{order:4;margin-left:auto;width:34px;height:34px;}
  .cta-panel{padding:34px 22px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding-bottom:28px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-col:last-child{grid-column:1 / -1;}
  .footer-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:519.98px){
  .section-title{font-size:22px;}
  .stat-num{font-size:32px;}
  .cta-actions .btn{width:100%;text-align:center;}
}

/* roulang page: category4 */
:root{
  --bg-0:#060A12;
  --bg-1:#0B1320;
  --bg-2:#101B2E;
  --brand:#2FD8FF;
  --brand-deep:#0E8FB8;
  --accent:#FF7A59;
  --accent-2:#FFB35C;
  --mint:#6EE7B7;
  --t1:#EAF2FF;
  --t2:#A9BBD4;
  --t3:#6C7F9B;
  --line:rgba(140,200,255,.12);
  --line-strong:rgba(140,220,255,.16);
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 4px 14px rgba(0,0,0,.35);
  --sh-2:0 18px 44px rgba(0,0,0,.5);
  --glow:0 0 24px rgba(47,216,255,.35);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-body-bg:#060A12;
  --bs-body-color:#EAF2FF;
  --bs-primary:#2FD8FF;
  --bs-border-radius:14px;
  --bs-border-radius-lg:20px;
  --bs-link-color:#2FD8FF;
  --bs-link-hover-color:#7BE7FF;
  --bs-border-color:rgba(140,200,255,.12);
  --bs-font-sans-serif:var(--font-cn);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:15px;
  line-height:1.8;
  color:var(--t1);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(60% 40% at 70% 0%, rgba(47,216,255,.14), transparent 70%),
    linear-gradient(rgba(140,200,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140,200,255,.035) 1px, transparent 1px);
  background-size:100% 100%, 48px 48px, 48px 48px;
  background-repeat:no-repeat, repeat, repeat;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .18s ease}
a:hover{color:#7BE7FF}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container-xxl{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.section{padding:56px 0}
.section-alt{background:linear-gradient(180deg,rgba(11,19,32,.85),rgba(6,10,18,.65));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:34px}
.section-title{position:relative;padding-left:16px}
.section-title::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;background:linear-gradient(180deg,var(--brand),var(--brand-deep));box-shadow:0 0 14px rgba(47,216,255,.45)}
.section-title .kicker{display:block;font-size:12px;letter-spacing:.14em;color:var(--t3);margin-bottom:6px}
.section-title h2{font-size:22px;font-weight:700;letter-spacing:-.01em;line-height:1.3}
.section-head p{color:var(--t3);font-size:13px;max-width:520px}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:1040;background:transparent;transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;border-bottom:1px solid transparent}
.site-header.is-scrolled{background:rgba(8,14,24,.82);backdrop-filter:blur(16px) saturate(140%);border-bottom-color:rgba(140,220,255,.14);box-shadow:0 10px 30px rgba(0,0,0,.4)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:74px}
.brand{display:flex;align-items:center;gap:10px;color:var(--t1)}
.brand:hover{color:var(--t1)}
.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:linear-gradient(160deg,rgba(47,216,255,.16),rgba(47,216,255,.02));border:1px solid rgba(140,220,255,.22);box-shadow:inset 0 1px 0 rgba(255,255,255,.08)}
.brand-copy{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.02em}
.brand-name em{font-style:normal;font-size:12px;font-weight:600;color:var(--brand);margin-left:6px;letter-spacing:.08em}
.brand-sub{font-size:11px;color:var(--t3);letter-spacing:.04em}
.main-nav{display:flex;align-items:center;gap:6px}
.nav-link{position:relative;padding:10px 14px;font-size:14px;color:var(--t2);border-radius:var(--r-sm);transition:color .16s ease}
.nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),var(--brand-deep));transform:scaleX(0);transform-origin:left;transition:transform .16s ease;box-shadow:0 0 12px rgba(47,216,255,.6)}
.nav-link:hover{color:var(--t1)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.header-cta{display:flex;align-items:center;gap:10px}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-pill);font-weight:600;font-size:14px;padding:11px 22px;border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;cursor:pointer}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
.btn-sm{padding:9px 18px;font-size:13px}
.btn-accent{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#20100A;box-shadow:0 8px 22px rgba(255,122,89,.28)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(255,122,89,.4);color:#20100A}
.btn-brand{background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#04141C;box-shadow:var(--glow)}
.btn-brand:hover{transform:translateY(-2px);box-shadow:0 0 32px rgba(47,216,255,.55);color:#04141C}
.btn-glass{background:linear-gradient(160deg,rgba(255,255,255,.08),rgba(255,255,255,.02));border-color:var(--line-strong);color:var(--t1);backdrop-filter:blur(10px)}
.btn-glass:hover{border-color:rgba(47,216,255,.5);color:var(--brand);transform:translateY(-2px)}
.btn[disabled],.btn.disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* ===== Hero ===== */
.hero-narrow{
  position:relative;
  min-height:296px;
  display:flex;
  align-items:flex-end;
  padding:110px 0 42px;
  background-image:linear-gradient(180deg,rgba(6,10,18,.72),rgba(6,10,18,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero-narrow::after{content:"";position:absolute;inset:auto 0 0 0;height:1px;background:linear-gradient(90deg,transparent,rgba(47,216,255,.5),transparent)}
.hero-narrow .hero-inner{position:relative;z-index:2;max-width:760px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t3);margin-bottom:16px}
.crumb a{color:var(--t3)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{opacity:.5}
.crumb .current{color:var(--t2)}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:var(--r-pill);font-size:12px;letter-spacing:.1em;color:var(--brand);border:1px solid rgba(47,216,255,.35);background:rgba(47,216,255,.08);margin-bottom:16px}
.hero-narrow h1{font-size:30px;font-weight:800;letter-spacing:-.01em;line-height:1.18;margin-bottom:14px}
.hero-narrow h1 span{color:var(--brand)}
.hero-sub{font-size:15px;color:var(--t2);max-width:600px}

/* ===== Filter chips ===== */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.chip{padding:9px 18px;border-radius:var(--r-pill);border:1px solid rgba(47,216,255,.35);background:transparent;color:var(--t2);font-size:13px;font-weight:600;letter-spacing:.02em;cursor:pointer;transition:all .18s ease}
.chip:hover{color:var(--t1);border-color:rgba(47,216,255,.7);transform:translateY(-2px)}
.chip.is-active{background:rgba(47,216,255,.16);color:var(--brand);border-color:var(--brand);box-shadow:0 0 18px rgba(47,216,255,.3)}

/* ===== Masonry ===== */
.masonry{columns:2;column-gap:20px}
.q-card{
  break-inside:avoid;
  display:block;
  margin-bottom:20px;
  padding:22px;
  border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid rgba(140,220,255,.16);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-1);
  transition:border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.q-card:hover{border-color:rgba(47,216,255,.4);transform:translateY(-3px);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--sh-2)}
.q-card.is-hidden{display:none}
.q-thumb{border-radius:var(--r-md);overflow:hidden;margin-bottom:16px;background:var(--bg-2)}
.q-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .22s ease}
.q-card:hover .q-thumb img{transform:scale(1.04)}
.q-thumb.ratio-16x9{aspect-ratio:16/9}
.q-thumb.ratio-9x16{aspect-ratio:9/16;max-width:62%}
.badge-soft{display:inline-flex;align-items:center;padding:4px 11px;border-radius:var(--r-pill);font-size:11px;letter-spacing:.08em;color:var(--brand);background:rgba(47,216,255,.1);border:1px solid rgba(47,216,255,.28)}
.badge-mint{color:var(--mint);background:rgba(110,231,183,.1);border-color:rgba(110,231,183,.3)}
.badge-warm{color:var(--accent-2);background:rgba(255,179,92,.1);border-color:rgba(255,179,92,.3)}
.q-card h3{font-size:17px;font-weight:600;line-height:1.45;margin:12px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.q-card p{font-size:14px;color:var(--t2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ok-list{margin-top:14px;display:grid;gap:8px}
.ok-list li{position:relative;padding-left:16px;font-size:13px;color:var(--t2);line-height:1.7}
.ok-list li::before{content:"";position:absolute;left:0;top:.62em;width:5px;height:5px;border-radius:50%;background:var(--brand);box-shadow:0 0 8px rgba(47,216,255,.7)}
.q-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:12px;color:var(--t3)}
.q-meta .stat{display:inline-flex;align-items:center;gap:6px}
.q-meta .stat i{color:var(--brand);font-size:11px}

/* ===== Stats ===== */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.stat-card{padding:26px 22px;border-radius:var(--r-lg);background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));border:1px solid var(--line-strong);text-align:center;transition:transform .22s ease,border-color .22s ease}
.stat-card:hover{transform:translateY(-3px);border-color:rgba(47,216,255,.4)}
.stat-num{font-size:48px;font-weight:800;line-height:1;letter-spacing:-.02em;color:var(--brand);text-shadow:0 0 26px rgba(47,216,255,.35);font-variant-numeric:tabular-nums}
.stat-num small{font-size:16px;font-weight:600;margin-left:4px;color:var(--t2);text-shadow:none}
.stat-card p{margin-top:12px;font-size:13px;color:var(--t3);line-height:1.7}

/* ===== Flow ===== */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow-card{position:relative;padding:26px 22px;border-radius:var(--r-lg);background:var(--bg-1);border:1px solid var(--line);transition:border-color .22s ease,transform .22s ease}
.flow-card:hover{border-color:rgba(47,216,255,.4);transform:translateY(-3px)}
.flow-step{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:12px;background:rgba(47,216,255,.12);border:1px solid rgba(47,216,255,.35);color:var(--brand);font-weight:800;font-size:15px;margin-bottom:16px}
.flow-card h3{font-size:16px;font-weight:600;margin-bottom:8px}
.flow-card p{font-size:13px;color:var(--t2);line-height:1.75}
.flow-line{position:absolute;top:44px;right:-14px;width:28px;height:1px;background:linear-gradient(90deg,rgba(47,216,255,.6),transparent)}

/* ===== Accordion ===== */
.accordion-glass .accordion-item{background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.02));border:1px solid var(--line-strong);border-radius:var(--r-md)!important;margin-bottom:10px;overflow:hidden;transition:border-color .2s ease}
.accordion-glass .accordion-item:has(.accordion-button:not(.collapsed)){border-color:rgba(47,216,255,.45);box-shadow:0 0 22px rgba(47,216,255,.14)}
.accordion-glass .accordion-button{background:transparent;color:var(--t1);font-size:16px;font-weight:600;padding:18px 20px;box-shadow:none;gap:12px}
.accordion-glass .accordion-button:not(.collapsed){color:var(--brand);box-shadow:none;background:transparent}
.accordion-glass .accordion-button::after{content:"\2b";background-image:none;font-size:20px;line-height:1;color:var(--brand);width:auto;height:auto;transform:none;transition:transform .18s ease;margin-left:auto;font-weight:400}
.accordion-glass .accordion-button:not(.collapsed)::after{content:"\d7";transform:rotate(180deg)}
.accordion-glass .accordion-button:focus{box-shadow:0 0 0 2px rgba(47,216,255,.25)}
.accordion-glass .accordion-body{padding:0 20px 20px;color:var(--t2);font-size:14px;line-height:1.8;border-left:3px solid transparent}
.accordion-glass .accordion-item:has(.accordion-button:not(.collapsed)) .accordion-body{border-left-color:var(--brand);box-shadow:inset 3px 0 14px -8px rgba(47,216,255,.7)}

/* ===== CTA ===== */
.cta-panel{position:relative;padding:56px 40px;border-radius:var(--r-lg);text-align:center;background:linear-gradient(160deg,rgba(47,216,255,.1),rgba(11,19,32,.9)),url('/assets/images/backpic/back-3.webp');background-size:cover;background-position:center;border:1px solid var(--line-strong);overflow:hidden}
.cta-panel::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,18,.62),rgba(6,10,18,.9))}
.cta-panel>*{position:relative;z-index:2}
.cta-panel h2{font-size:26px;font-weight:800;margin-bottom:12px}
.cta-panel p{color:var(--t2);max-width:600px;margin:0 auto 26px;font-size:15px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ===== Footer ===== */
.site-footer{position:relative;margin-top:20px;background:#04070D;border-top:1px solid var(--line);padding-top:56px}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(47,216,255,.55),transparent)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;padding-bottom:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:13px;color:var(--t3);line-height:1.8;max-width:280px;margin-bottom:18px}
.footer-btn{margin-top:4px}
.footer-col h3{font-size:14px;font-weight:700;color:var(--t1);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:grid;gap:10px}
.footer-col ul a{font-size:13px;color:var(--t3)}
.footer-col ul a:hover{color:var(--brand)}
.footer-note{font-size:13px;color:var(--t3);line-height:1.9}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;padding:20px 0 26px;border-top:1px solid var(--line);font-size:12px;color:var(--t3)}

/* ===== Mobile tabbar ===== */
.mobile-tabbar{display:none}
@media (max-width:991.98px){
  body{padding-bottom:76px}
  .main-nav,.header-cta{display:none}
  .mobile-tabbar{
    display:flex;
    position:fixed;left:0;right:0;bottom:0;z-index:1050;
    height:60px;
    padding-bottom:env(safe-area-inset-bottom);
    background:rgba(8,14,24,.9);
    backdrop-filter:blur(16px) saturate(140%);
    border-top:1px solid rgba(140,220,255,.14);
  }
  .tab-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:11px;color:var(--t3);position:relative}
  .tab-item i{font-size:18px}
  .tab-item.is-active{color:var(--brand)}
  .tab-item.is-active i::after{content:"";position:absolute;width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(47,216,255,.9);transform:translate(14px,-12px)}
}

/* ===== Responsive ===== */
@media (min-width:576px){
  .hero-narrow h1{font-size:38px}
}
@media (min-width:768px){
  .section{padding:72px 0}
  .section-title h2{font-size:28px}
}
@media (min-width:992px){
  .section{padding:96px 0}
  .hero-narrow{min-height:280px;padding:120px 0 48px}
  .hero-narrow h1{font-size:46px}
  .section-title h2{font-size:32px}
}
@media (min-width:1400px){
  .hero-narrow h1{font-size:52px}
}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1 / -1}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .flow-line{display:none}
}
@media (max-width:767.98px){
  .stat-grid{grid-template-columns:1fr;gap:14px}
  .stat-num{font-size:40px}
  .q-card{padding:18px}
  .masonry{columns:1}
  .cta-panel{padding:40px 22px}
  .cta-panel h2{font-size:22px}
}
@media (max-width:519.98px){
  .flow-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-narrow{min-height:260px;padding:100px 0 36px}
  .hero-narrow h1{font-size:28px}
  .q-thumb.ratio-9x16{max-width:78%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}