/* roulang page: index */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --bg-3:#16233A;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --c-primary:#17C6A8;
  --c-primary-dark:#0E9B84;
  --c-accent:#FFB020;
  --c-alert:#FF5A5F;
  --c-info:#6FA8FF;
  --t-1:#EAF2FF;
  --t-2:rgba(234,242,255,.72);
  --t-3:rgba(234,242,255,.46);
  --t-inv:#04140F;
  --r-card:18px;
  --r-panel:24px;
  --r-btn:12px;
  --r-img:14px;
  --sh-card:0 24px 64px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.12);
  --sh-glow:0 10px 30px rgba(23,198,168,.34);
  --container:1240px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Space Grotesk","Sora",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-2);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--t-1);font-weight:800;line-height:1.28;letter-spacing:.005em}
h1{font-size:clamp(32px,4.6vw,56px);font-weight:900;line-height:1.18;letter-spacing:-.01em}
h2{font-size:clamp(24px,3vw,36px);font-weight:800}
h3{font-size:20px;font-weight:700;line-height:1.4}
h4{font-size:17px;font-weight:700}
p{margin:0}
::selection{background:rgba(23,198,168,.35);color:#fff}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:96px 0;position:relative}
.section--tight{padding:64px 0}
.section--alt{background:var(--bg-1)}
.section--panel{background:linear-gradient(180deg,var(--bg-1),var(--bg-0))}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head p{margin-top:12px;color:var(--t-3);font-size:15px;max-width:680px;line-height:1.8}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(23,198,168,.10);
  border:1px solid rgba(23,198,168,.30);
  color:var(--c-primary);
  font-size:13px;font-weight:700;letter-spacing:.04em;
}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-info);font-size:15px;font-weight:700;
  padding:6px 0;position:relative;transition:color .18s var(--ease);
}
.link-more::after{
  content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;
  background:var(--c-primary);transition:width .12s var(--ease);
}
.link-more:hover{color:var(--c-primary)}
.link-more:hover::after{width:100%}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--r-btn);
  border:1px solid transparent;background:none;
  font-size:15px;font-weight:700;cursor:pointer;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-primary{background:var(--c-primary);color:var(--t-inv);box-shadow:var(--sh-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(23,198,168,.46);background:#1BD6B6}
.btn-primary:active{transform:translateY(0);background:var(--c-primary-dark);box-shadow:none}
.btn-ghost{background:var(--glass);border-color:var(--line-strong);color:var(--t-1);backdrop-filter:blur(10px)}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(23,198,168,.55);background:var(--glass-strong)}
.btn-ghost:active{transform:translateY(0);background:var(--glass)}
.btn-outline{background:transparent;border-color:rgba(23,198,168,.5);color:var(--c-primary)}
.btn-outline:hover{background:rgba(23,198,168,.12);transform:translateY(-2px)}
.btn:disabled,.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.btn-block{width:100%}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  color:var(--t-2);font-size:12px;font-weight:700;letter-spacing:.02em;
}
.badge--gold{background:rgba(255,176,32,.12);border-color:rgba(255,176,32,.42);color:var(--c-accent)}
.badge--mint{background:rgba(23,198,168,.12);border-color:rgba(23,198,168,.40);color:var(--c-primary)}
.badge--info{background:rgba(111,168,255,.12);border-color:rgba(111,168,255,.36);color:var(--c-info)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:-.01em}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,8,15,.72);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(5,8,15,.94);box-shadow:0 12px 34px rgba(0,0,0,.5)}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--c-primary),#0B7C6C);
  color:var(--t-inv);font-family:var(--font-num);font-weight:900;font-size:18px;
  box-shadow:0 8px 22px rgba(23,198,168,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{color:var(--t-1);font-size:16px;font-weight:800;letter-spacing:.01em}
.brand-text span{color:var(--t-3);font-size:11px;letter-spacing:.14em;font-family:var(--font-num)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1}
.nav-links a{
  position:relative;padding:10px 12px;border-radius:10px;
  color:var(--t-2);font-size:15px;font-weight:600;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease);
}
.nav-links a:hover{color:var(--t-1);background:var(--glass)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--t-1)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-actions .btn{min-height:42px;padding:0 20px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);background:var(--glass);
  cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t-1);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-drawer{
  display:none;position:fixed;inset:72px 0 0;z-index:55;
  background:rgba(5,8,15,.97);backdrop-filter:blur(18px);
  padding:28px 24px 120px;overflow-y:auto;
}
.nav-drawer.is-open{display:block}
.nav-drawer a{
  display:block;padding:18px 4px;font-size:19px;font-weight:700;color:var(--t-1);
  border-bottom:1px solid var(--line);
}
.nav-drawer a.active{color:var(--c-primary)}
.nav-drawer .drawer-cta{margin-top:28px;display:grid;gap:12px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:88px 0 72px;background:var(--bg-0)}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.30;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 520px at 16% 8%,rgba(23,198,168,.18),transparent 62%),
    linear-gradient(180deg,rgba(5,8,15,.62) 0%,rgba(5,8,15,.88) 58%,var(--bg-0) 100%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-copy h1{margin:22px 0 20px}
.hero-sub{font-size:17px;line-height:1.9;color:var(--t-2);max-width:44ch}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  margin-top:44px;padding-top:28px;border-top:1px solid var(--line);
}
.hero-stats b{display:block;font-family:var(--font-num);font-size:26px;font-weight:800;color:var(--t-1);line-height:1.2}
.hero-stats span{display:block;margin-top:4px;font-size:13px;color:var(--t-3)}
.hero-visual{position:relative}
.hero-img{
  border-radius:var(--r-panel);overflow:hidden;
  border:1px solid var(--line-strong);
  box-shadow:0 30px 70px rgba(0,0,0,.55);
}
.hero-img img{width:100%;aspect-ratio:4/3.2;object-fit:cover}
.hero-line{
  position:absolute;top:-14px;left:34px;right:34px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,198,168,.75),transparent);
}
.hero-info-card{
  position:absolute;left:-18px;bottom:-26px;
  width:min(310px,88%);
  background:rgba(16,27,46,.88);
  border:1px solid var(--line-strong);
  border-radius:var(--r-card);
  backdrop-filter:blur(16px);
  box-shadow:var(--sh-card);
  padding:18px 20px;
}
.hero-info-card .info-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line)}
.hero-info-card .info-row:last-child{border-bottom:0}
.hero-info-card .info-row span{font-size:13px;color:var(--t-3)}
.hero-info-card .info-row strong{font-size:14px;color:var(--t-1);font-weight:700}

/* ---------- Highlights ---------- */
.hl-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.hl-card{
  position:relative;overflow:hidden;
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-card);padding:28px;
  backdrop-filter:blur(12px);
  box-shadow:0 18px 44px rgba(0,0,0,.35);
  transition:border-color .18s var(--ease),transform .18s var(--ease),background .18s var(--ease);
  display:flex;flex-direction:column;
}
.hl-card:hover{border-color:rgba(23,198,168,.42);transform:translateY(-3px);background:var(--glass-strong)}
.hl-feature{grid-column:span 8;grid-row:span 2;padding:0}
.hl-feature img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hl-feature .hl-body{padding:30px}
.hl-side{grid-column:span 4}
.hl-wide{grid-column:span 7}
.hl-side2{grid-column:span 5}
.hl-num{
  font-family:var(--font-num);font-size:13px;font-weight:800;
  color:var(--c-primary);letter-spacing:.12em;margin-bottom:14px;
}
.hl-card h3{margin-bottom:10px}
.hl-card p{font-size:15px;line-height:1.82;color:var(--t-2)}
.hl-foot{margin-top:auto;padding-top:20px}
.hl-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--c-info);font-size:14px;font-weight:700}
.hl-card:hover .hl-arrow{color:var(--c-primary)}

/* ---------- Timeline ---------- */
.tl-layout{display:grid;grid-template-columns:1fr 340px;gap:40px;align-items:start}
.timeline{position:relative;padding-left:30px}
.timeline::before{
  content:"";position:absolute;left:6px;top:10px;bottom:10px;width:1px;
  background:linear-gradient(180deg,rgba(23,198,168,.65),rgba(255,255,255,.06));
}
.tl-item{position:relative;margin-bottom:20px}
.tl-item:last-child{margin-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:26px;width:13px;height:13px;
  border-radius:50%;border:2px solid var(--line-strong);background:var(--bg-0);
  transition:all .2s var(--ease);
}
.tl-item.is-now::before{
  border-color:var(--c-primary);background:var(--c-primary);
  box-shadow:0 0 0 6px rgba(23,198,168,.16),0 0 18px rgba(23,198,168,.6);
}
.tl-card{
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px 24px;
  backdrop-filter:blur(12px);
  transition:border-color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
.tl-card:hover{border-color:rgba(23,198,168,.42);background:var(--glass-strong);transform:translateX(3px)}
.tl-time{font-family:var(--font-num);font-size:17px;font-weight:800;color:var(--c-primary);min-width:112px}
.tl-main{flex:1;min-width:220px}
.tl-main h3{font-size:17px;margin-bottom:4px}
.tl-main p{font-size:14px;color:var(--t-3);line-height:1.7}
.tl-aside{
  background:linear-gradient(180deg,var(--bg-2),var(--bg-1));
  border:1px solid var(--line);border-radius:var(--r-panel);
  padding:30px;position:sticky;top:96px;
}
.tl-aside h3{margin-bottom:16px}
.tl-aside ul li{
  display:flex;gap:10px;align-items:flex-start;
  padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--t-2);line-height:1.7;
}
.tl-aside ul li:last-child{border-bottom:0}
.tl-aside ul li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary);margin-top:10px;flex-shrink:0}
.tl-aside .btn{margin-top:22px}

/* ---------- Speakers ---------- */
.spk-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.spk-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;backdrop-filter:blur(12px);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.spk-card:hover{transform:translateY(-5px);border-color:rgba(23,198,168,.42);box-shadow:0 22px 46px rgba(0,0,0,.45)}
.spk-photo{border-radius:var(--r-img);overflow:hidden;margin-bottom:16px}
.spk-photo img{width:100%;aspect-ratio:1/1;object-fit:cover;transition:transform .3s var(--ease)}
.spk-card:hover .spk-photo img{transform:scale(1.04)}
.spk-card h3{font-size:17px;margin-bottom:6px}
.spk-role{font-size:13px;color:var(--c-primary);font-weight:700;margin-bottom:10px}
.spk-card p{font-size:14px;color:var(--t-3);line-height:1.7}

/* ---------- Tickets ---------- */
.tk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.tk-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px 28px;backdrop-filter:blur(12px);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.tk-card:hover{border-color:rgba(23,198,168,.42);transform:translateY(-3px)}
.tk-card h3{font-size:19px;margin-bottom:6px}
.tk-note{font-size:13.5px;color:var(--t-3);margin-bottom:20px;line-height:1.7}
.tk-price{font-family:var(--font-num);font-size:34px;font-weight:800;color:var(--t-1);line-height:1.1}
.tk-price small{font-size:14px;font-weight:600;color:var(--t-3);margin-left:6px}
.tk-list{margin:24px 0;border-top:1px solid var(--line);padding-top:20px}
.tk-list li{display:flex;gap:10px;align-items:flex-start;padding:8px 0;font-size:14.5px;line-height:1.7}
.tk-list li::before{
  content:"✓";flex-shrink:0;color:var(--c-primary);font-weight:900;font-size:14px;line-height:1.7;
}
.tk-list li.off{color:var(--t-3)}
.tk-list li.off::before{content:"—";color:var(--t-3)}
.tk-card.recommend{
  background:var(--bg-2);
  border-color:rgba(255,176,32,.5);
  box-shadow:0 0 0 1px rgba(255,176,32,.5),0 20px 50px rgba(255,176,32,.18);
  transform:translateY(-12px);
}
.tk-card.recommend:hover{transform:translateY(-15px)}
.tk-head{display:flex;align-items:center;justify-content:space-between;gap:12px}

/* ---------- Signup ---------- */
.signup-panel{
  display:grid;grid-template-columns:1fr 1.05fr;gap:48px;
  background:linear-gradient(150deg,rgba(16,27,46,.92),rgba(10,18,32,.94));
  border:1px solid var(--line-strong);border-radius:var(--r-panel);
  padding:48px;backdrop-filter:blur(18px);
  box-shadow:var(--sh-card);
}
.signup-copy h2{margin-bottom:16px}
.signup-copy > p{font-size:16px;line-height:1.9;color:var(--t-2);max-width:42ch}
.signup-points{margin-top:28px;display:grid;gap:14px}
.signup-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--t-2)}
.signup-points li i{
  flex-shrink:0;width:22px;height:22px;border-radius:7px;margin-top:3px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(23,198,168,.14);border:1px solid rgba(23,198,168,.4);
  color:var(--c-primary);font-size:12px;font-weight:900;font-style:normal;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;color:var(--t-3);font-weight:700;letter-spacing:.02em}
.field input,.field select,.field textarea{
  width:100%;background:rgba(5,8,15,.6);
  border:1px solid var(--line-strong);border-radius:12px;
  padding:13px 14px;font-size:15px;color:var(--t-1);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease);
}
.field textarea{min-height:96px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:rgba(234,242,255,.32)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 4px rgba(23,198,168,.16);
  background:rgba(5,8,15,.82);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--t-3) 50%),linear-gradient(135deg,var(--t-3) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field.has-error input,.field.has-error select{border-color:var(--c-alert);box-shadow:0 0 0 4px rgba(255,90,95,.14)}
.field .err{display:none;font-size:13px;color:var(--c-alert)}
.field.has-error .err{display:block}
.form-foot{grid-column:1/-1;display:flex;flex-direction:column;gap:12px;margin-top:6px}
.form-privacy{font-size:12.5px;color:var(--t-3);line-height:1.7}
.form-ok{
  display:none;grid-column:1/-1;align-items:center;gap:10px;
  padding:14px 16px;border-radius:12px;
  background:rgba(23,198,168,.12);border:1px solid rgba(23,198,168,.4);
  color:var(--c-primary);font-size:14.5px;font-weight:700;
}
.form-ok.show{display:flex}

/* ---------- News ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  backdrop-filter:blur(12px);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.news-card:hover{transform:translateY(-4px);border-color:rgba(23,198,168,.42);box-shadow:0 22px 48px rgba(0,0,0,.45)}
.news-cover{
  display:block;width:100%;aspect-ratio:16/10;
  background:linear-gradient(140deg,#0E2A3A 0%,#123043 45%,#0B7C6C 100%);
  position:relative;
}
.news-cover::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg,transparent 0 60%,rgba(23,198,168,.28) 60% 61%,transparent 61%),
    linear-gradient(180deg,transparent 62%,rgba(5,8,15,.65));
}
.news-cover[data-tone="1"]{background:linear-gradient(140deg,#101B2E 0%,#173A55 50%,#0E9B84 100%)}
.news-cover[data-tone="2"]{background:linear-gradient(140deg,#131A2E 0%,#1B3550 45%,#3A6E8C 100%)}
.news-cover[data-tone="3"]{background:linear-gradient(140deg,#0B1B24 0%,#14374A 55%,#0E7C74 100%)}
.news-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px}
.news-meta time{font-family:var(--font-num);font-size:12.5px;color:var(--t-3)}
.news-card h3{
  font-size:17.5px;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card p{
  font-size:14.5px;line-height:1.78;color:var(--t-3);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-more{margin-top:auto;padding-top:8px;font-size:14px;font-weight:700;color:var(--c-info)}
.news-card:hover .news-more{color:var(--c-primary)}
.news-empty{
  grid-column:1/-1;padding:56px 24px;text-align:center;
  border:1px dashed var(--line-strong);border-radius:var(--r-card);
  color:var(--t-3);font-size:15px;background:var(--glass);
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;display:grid;gap:12px}
.faq-item{
  background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
.faq-item[open]{border-color:rgba(23,198,168,.4);background:var(--glass-strong)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:22px 26px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:16.5px;font-weight:700;color:var(--t-1);position:relative;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";flex-shrink:0;width:9px;height:9px;
  border-right:2px solid var(--t-3);border-bottom:2px solid var(--t-3);
  transform:rotate(45deg);transition:transform .2s var(--ease),border-color .2s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(-135deg);border-color:var(--c-primary)}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--c-primary);border-radius:0 3px 3px 0;
}
.faq-body{padding:0 26px 24px;font-size:15.5px;line-height:1.85;color:var(--t-2)}

/* ---------- Footer ---------- */
.site-footer{background:#03060C;border-top:1px solid var(--line);padding:72px 0 0;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-brand .brand{margin-bottom:18px}
.foot-brand p{font-size:14.5px;line-height:1.85;color:var(--t-3);max-width:38ch}
.foot-col h4{font-size:15px;margin-bottom:18px;color:var(--t-1)}
.foot-col ul li{margin-bottom:11px}
.foot-col ul a{font-size:14.5px;color:var(--t-3);transition:color .18s var(--ease),padding-left .18s var(--ease)}
.foot-col ul a:hover{color:var(--c-primary);padding-left:4px}
.foot-bottom{
  margin-top:56px;padding:22px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.foot-bottom p{font-size:13px;color:var(--t-3)}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;font-weight:700;color:var(--t-2);
  padding:9px 16px;border-radius:999px;
  border:1px solid var(--line-strong);background:var(--glass);
  transition:all .18s var(--ease);
}
.to-top:hover{color:var(--c-primary);border-color:rgba(23,198,168,.5);transform:translateY(-2px)}

/* ---------- Mobile sticky CTA ---------- */
.mobile-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:58;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  gap:12px;
  background:rgba(5,8,15,.94);backdrop-filter:blur(16px);
  border-top:1px solid var(--line-strong);
}
.mobile-cta .btn{flex:1;min-height:48px}

/* ---------- Responsive ---------- */
@media (max-width:1200px){
  .nav-links a{padding:10px 9px;font-size:14.5px}
  .hl-footer{grid-template-columns:1fr}
}
@media (max-width:992px){
  .section{padding:72px 0}
  .hero{padding:64px 0 56px}
  .hero-grid{grid-template-columns:1fr;gap:56px}
  .hero-visual{max-width:640px}
  .hero-info-card{position:static;width:100%;left:auto;bottom:auto;margin-top:16px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:22px}
  .hl-feature,.hl-side,.hl-wide,.hl-side2{grid-column:span 12;grid-row:auto}
  .tl-layout{grid-template-columns:1fr}
  .tl-aside{position:static}
  .spk-grid{grid-template-columns:repeat(2,1fr)}
  .tk-grid{grid-template-columns:1fr;gap:18px}
  .tk-card.recommend{transform:none}
  .tk-card.recommend:hover{transform:translateY(-3px)}
  .signup-panel{grid-template-columns:1fr;padding:36px;gap:36px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:860px){
  .nav-links,.nav-actions{display:none}
  .nav-toggle{display:inline-flex}
  .mobile-cta{display:flex}
  .site-footer{padding-bottom:88px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .container{padding:0 16px}
  .section-head{margin-bottom:28px}
  .hero-copy h1{margin:18px 0 16px}
  .hero-sub{font-size:16px}
  .form-grid{grid-template-columns:1fr}
  .spk-grid{grid-auto-flow:column;grid-auto-columns:74%;grid-template-columns:none;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x mandatory}
  .spk-card{scroll-snap-align:start}
  .news-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .faq-item summary{padding:18px 20px;font-size:15.5px}
  .faq-body{padding:0 20px 20px;font-size:15px}
  .tl-card{padding:18px}
  .tl-time{min-width:auto;font-size:15px}
}
@media (max-width:520px){
  h1{font-size:30px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:16px}
  .hero-stats b{font-size:22px}
  .hero-cta .btn{width:100%}
  .signup-panel{padding:26px 20px;border-radius:var(--r-card)}
  .btn{min-height:48px;padding:0 18px}
  .brand-text strong{font-size:14.5px}
  .brand-text span{font-size:10px;letter-spacing:.1em}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg-0:#05080F;--bg-1:#0A1220;--bg-2:#101B2E;--bg-3:#16233A;
  --glass:rgba(255,255,255,.055);--glass-strong:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.10);--line-strong:rgba(255,255,255,.18);
  --c-primary:#17C6A8;--c-primary-dark:#0E9B84;--c-accent:#FFB020;
  --c-alert:#FF5A5F;--c-info:#6FA8FF;
  --t-1:#EAF2FF;--t-2:rgba(234,242,255,.72);--t-3:rgba(234,242,255,.46);--t-inv:#04140F;
  --r-card:18px;--r-panel:24px;--r-btn:12px;--r-img:14px;
  --sh-card:0 24px 64px rgba(0,0,0,.45);--sh-glow:0 10px 30px rgba(23,198,168,.34);
  --ease:cubic-bezier(.2,.7,.3,1);--dur:180ms;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--t-2);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-info);text-decoration:none;transition:color var(--dur) var(--ease)}
a:hover{color:var(--c-primary)}
h1,h2,h3,h4{color:var(--t-1);margin:0;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-family:"Space Grotesk","Sora",system-ui,sans-serif;font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;height:72px;
  background:rgba(5,8,15,.72);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{background:rgba(5,8,15,.94);box-shadow:0 12px 40px rgba(0,0,0,.5)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:12px;color:var(--t-1);flex-shrink:0}
.brand:hover{color:var(--t-1)}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),#0B7C6A);color:var(--t-inv);
  font-weight:900;font-size:19px;font-family:"Space Grotesk",system-ui,sans-serif;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.01em}
.brand-text span{font-size:10px;letter-spacing:.22em;color:var(--t-3);font-family:"Space Grotesk",system-ui,sans-serif}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px;flex-wrap:nowrap}
.nav-links a{
  position:relative;display:inline-block;padding:10px 14px;border-radius:10px;
  color:var(--t-2);font-size:15px;white-space:nowrap;transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform 120ms var(--ease);
}
.nav-links a:hover{color:var(--t-1);background:var(--glass)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--t-1);background:var(--glass)}
.header-cta{display:flex;align-items:center;gap:12px;margin-left:auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;white-space:nowrap;border:1px solid transparent;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn-primary{background:var(--c-primary);color:var(--t-inv);box-shadow:var(--sh-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 38px rgba(23,198,168,.45);color:var(--t-inv)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{background:var(--glass);border-color:var(--line-strong);color:var(--t-1)}
.btn-ghost:hover{background:var(--glass-strong);border-color:rgba(23,198,168,.5);transform:translateY(-2px);color:var(--t-1)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  background:var(--glass);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t-1);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t-1);border-radius:2px}
.nav-toggle span::before{top:-6px}.nav-toggle span::after{top:6px}
.drawer{
  position:fixed;inset:72px 0 0;z-index:88;background:rgba(5,8,15,.97);backdrop-filter:blur(18px);
  display:flex;flex-direction:column;padding:24px;gap:8px;transform:translateY(-12px);
  opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur);
}
.drawer.open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer a{font-size:19px;font-weight:700;color:var(--t-1);padding:14px 12px;border-radius:12px;border-bottom:1px solid var(--line)}
.drawer a:hover{background:var(--glass)}
.drawer .btn{margin-top:auto;width:100%;min-height:52px}
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;gap:10px;padding:10px 16px;
  background:rgba(5,8,15,.94);backdrop-filter:blur(14px);border-top:1px solid var(--line);
}
.sticky-cta .btn{flex:1}

/* ---------- page shells ---------- */
main{display:block}
.section{padding:96px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-sm{padding:64px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);color:var(--t-2);
  font-size:13px;letter-spacing:.06em;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 12px var(--c-primary)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.section-head h2{font-size:clamp(24px,3vw,36px);font-weight:800;line-height:1.28}
.section-head p{color:var(--t-2);margin-top:10px;max-width:46ch}
.more-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:700;color:var(--c-primary)}
.more-link:hover{gap:10px}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:24px 0 0;border-bottom:0}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--t-3)}
.crumb a{color:var(--t-3)}
.crumb a:hover{color:var(--c-primary)}
.crumb .sep{color:rgba(255,255,255,.22)}
.crumb .cur{color:var(--t-2);max-width:44ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article head ---------- */
.article-head{padding:32px 0 40px;position:relative;overflow:hidden}
.article-head::after{
  content:"";position:absolute;right:-120px;top:-40px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,198,168,.16),transparent 68%);pointer-events:none;
}
.article-head .tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.tag{
  display:inline-flex;align-items:center;padding:5px 13px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
  background:var(--glass);border:1px solid var(--line);color:var(--t-2);
}
.tag-primary{background:rgba(23,198,168,.14);border-color:rgba(23,198,168,.42);color:#7BEBD6}
.tag-gold{background:rgba(255,176,32,.13);border-color:rgba(255,176,32,.4);color:#FFD07A}
.article-head h1{font-size:clamp(32px,4.6vw,56px);font-weight:900;line-height:1.18;letter-spacing:-.01em;max-width:22ch}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:22px;
  font-size:13px;color:var(--t-3);
}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta b{color:var(--t-2);font-weight:600}
.dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.24)}

/* ---------- reading layout ---------- */
.reading{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:48px;align-items:start;padding:8px 0 96px}
.article-body{
  max-width:800px;font-size:17px;line-height:1.95;color:var(--t-2);
  background:rgba(255,255,255,.028);border:1px solid var(--line);border-radius:var(--r-panel);
  padding:40px 44px;box-shadow:var(--sh-card);
}
.article-body > *:first-child{margin-top:0}
.article-body h2{font-size:26px;font-weight:800;line-height:1.35;margin:42px 0 16px;padding-left:14px;position:relative}
.article-body h2::before{content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:3px;background:var(--c-primary)}
.article-body h3{font-size:20px;font-weight:700;line-height:1.45;margin:30px 0 12px;color:var(--t-1)}
.article-body h4{font-size:17px;font-weight:700;margin:24px 0 10px;color:var(--t-1)}
.article-body p{margin:0 0 18px;max-width:46ch}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:4px}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--c-primary)}
.article-body ol{counter-reset:li}
.article-body ol li{counter-increment:li}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:.18em;width:20px;text-align:left;
  color:var(--c-primary);font-weight:800;font-size:14px;font-family:"Space Grotesk",system-ui,sans-serif;
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;border-left:3px solid var(--c-primary);border-radius:0 14px 14px 0;
  background:var(--glass);color:var(--t-1);
}
.article-body img{border-radius:var(--r-img);margin:24px auto;box-shadow:0 18px 48px rgba(0,0,0,.42)}
.article-body figure{margin:24px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--t-3);margin-top:10px}
.article-body a{border-bottom:1px solid rgba(111,168,255,.4)}
.article-body a:hover{border-bottom-color:var(--c-primary)}
.article-body code{
  background:var(--bg-3);border:1px solid var(--line);border-radius:6px;padding:2px 7px;
  font-family:"Space Grotesk",ui-monospace,monospace;font-size:14px;color:#9EE6D6;
}
.article-body pre{
  background:var(--bg-2);border:1px solid var(--line);border-radius:14px;padding:16px 18px;
  overflow:auto;margin:0 0 22px;
}
.article-body pre code{background:none;border:0;padding:0}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:14px;overflow:hidden;display:table;
}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line)}
.article-body th{background:var(--bg-3);color:var(--t-1);font-weight:700}
.article-body tbody tr:nth-child(odd){background:rgba(255,255,255,.028)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}

/* ---------- side rail ---------- */
.rail{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.rail-card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-card);backdrop-filter:blur(12px);
}
.rail-card h3{font-size:15px;font-weight:800;margin-bottom:14px;letter-spacing:.02em}
.rail-list li + li{margin-top:10px}
.rail-list a{display:flex;gap:10px;font-size:14px;color:var(--t-2);line-height:1.6}
.rail-list a:hover{color:var(--c-primary)}
.rail-list .dot-mark{flex:0 0 auto;width:6px;height:6px;border-radius:50%;background:var(--c-accent);margin-top:9px}
.rail-card .btn{width:100%;margin-top:6px}

/* ---------- empty state ---------- */
.empty-state{
  text-align:center;padding:56px 24px;background:var(--bg-2);border:1px dashed var(--line-strong);
  border-radius:var(--r-panel);
}
.empty-state .glyph{
  width:64px;height:64px;border-radius:18px;margin:0 auto 18px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(23,198,168,.28),rgba(255,176,32,.16));color:var(--t-1);font-size:26px;font-weight:900;
}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{max-width:40ch;margin:0 auto 20px}

/* ---------- footer ctas ---------- */
.post-tags{display:flex;flex-wrap:wrap;gap:10px;margin:28px 0 0}
.back-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{border-color:rgba(23,198,168,.42);transform:translateY(-4px);box-shadow:0 26px 60px rgba(0,0,0,.5)}
.card-media{aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,var(--bg-3),#0B7C6A)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform 300ms var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px}
.card-body h3{font-size:18px;font-weight:700;line-height:1.45;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14.5px;line-height:1.75;color:var(--t-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--t-3)}
.card-foot .arrow{color:var(--c-primary);font-weight:700}

.cta-band{
  background:linear-gradient(140deg,var(--bg-2),var(--bg-1));border:1px solid var(--line);
  border-radius:var(--r-panel);padding:44px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:-80px;bottom:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,198,168,.2),transparent 70%);
}
.cta-band h2{font-size:clamp(23px,2.6vw,32px);font-weight:800;line-height:1.3;position:relative}
.cta-band p{margin-top:10px;max-width:48ch;position:relative}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative}

/* ---------- footer ---------- */
.site-footer{background:#04060C;border-top:1px solid var(--line);padding:72px 0 28px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-brand p{font-size:14px;line-height:1.8;color:var(--t-3);margin-top:18px;max-width:38ch}
.foot-col h4{font-size:15px;font-weight:800;margin-bottom:16px;color:var(--t-1)}
.foot-col li + li{margin-top:10px}
.foot-col a{font-size:14.5px;color:var(--t-2)}
.foot-col a:hover{color:var(--c-primary)}
.foot-bottom{
  margin-top:52px;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(--t-3);
}
.to-top{color:var(--t-2);font-weight:600}
.to-top:hover{color:var(--c-primary)}

@media (max-width:1200px){
  .nav-links a{padding:10px 10px;font-size:14px}
  .reading{grid-template-columns:minmax(0,1fr);gap:32px}
  .rail{position:static;flex-direction:row;flex-wrap:wrap}
  .rail-card{flex:1 1 260px}
}
@media (max-width:992px){
  .nav-links{display:none}
  .header-cta .btn-ghost{display:none}
  .nav-toggle{display:inline-flex}
  .section{padding:64px 0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:52px 0}
  .article-body{padding:26px 20px;font-size:16.5px;border-radius:var(--r-card)}
  .article-body p{max-width:none}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .article-head h1{font-size:clamp(28px,7vw,38px);max-width:none}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .related-grid{grid-template-columns:1fr}
  .sticky-cta{display:flex}
  .site-footer{padding-bottom:96px}
}
@media (max-width:520px){
  .foot-grid{grid-template-columns:1fr}
  .brand-text strong{font-size:15px}
  .article-meta{gap:8px 14px}
  .btn{width:auto}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --bg-3:#16233A;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --c-primary:#17C6A8;
  --c-primary-dark:#0E9B84;
  --c-accent:#FFB020;
  --c-alert:#FF5A5F;
  --c-info:#6FA8FF;
  --t-1:#EAF2FF;
  --t-2:rgba(234,242,255,.72);
  --t-3:rgba(234,242,255,.46);
  --t-inv:#04140F;
  --r-card:18px;
  --r-panel:24px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-glass:0 24px 64px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.12);
  --shadow-glow:0 10px 30px rgba(23,198,168,.34);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Sora","Space Grotesk","SFMono-Regular",ui-monospace,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-2);
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 14px}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:8px}
::selection{background:rgba(23,198,168,.32);color:#fff}

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

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,8,15,.74);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  transition:background 180ms var(--ease),box-shadow 180ms var(--ease);
}
.site-header.scrolled{background:rgba(5,8,15,.94);box-shadow:0 12px 40px rgba(0,0,0,.5)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}

.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  font-family:var(--font-num);font-weight:800;font-size:18px;color:var(--t-inv);
  background:linear-gradient(135deg,var(--c-primary),#63e3c9);
  box-shadow:var(--shadow-glow);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{color:var(--t-1);font-size:16px;font-weight:800;letter-spacing:.01em;white-space:nowrap}
.brand-text span{font-family:var(--font-num);font-size:10px;letter-spacing:.22em;color:var(--t-3)}

.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-links a{
  position:relative;padding:10px 11px;font-size:15px;color:var(--t-2);
  border-radius:10px;transition:color 180ms var(--ease),background 180ms var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:11px;right:11px;bottom:4px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform 160ms var(--ease);
}
.nav-links a:hover{color:var(--t-1);background:var(--glass)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--t-1)}
.nav-links a.active::after{transform:scaleX(1)}

.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;
  white-space:nowrap;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease);
}
.btn-primary{background:var(--c-primary);color:var(--t-inv);box-shadow:var(--shadow-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(23,198,168,.46)}
.btn-primary:active{transform:translateY(0);background:var(--c-primary-dark);box-shadow:none}
.btn-ghost{background:var(--glass);border-color:var(--line-strong);color:var(--t-1)}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(23,198,168,.55);background:var(--glass-strong)}
.btn-ghost:active{transform:translateY(0);background:var(--bg-3)}
.btn-accent{background:var(--c-accent);color:#2A1900;box-shadow:0 10px 30px rgba(255,176,32,.28)}
.btn-accent:hover{transform:translateY(-2px)}
.btn-lg{min-height:50px;padding:0 26px;font-size:16px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

.hamburger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line-strong);cursor:pointer;
  padding:0;place-items:center;gap:0;margin-left:auto;
  transition:background 180ms var(--ease),border-color 180ms var(--ease);
}
.hamburger span{display:block;width:18px;height:2px;background:var(--t-1);border-radius:2px;margin:3px auto;transition:transform 200ms var(--ease),opacity 160ms var(--ease)}
.hamburger:hover{background:var(--glass-strong);border-color:rgba(23,198,168,.5)}
.hamburger.open span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.nav-drawer{
  position:fixed;left:0;right:0;top:72px;bottom:0;z-index:55;
  display:none;flex-direction:column;gap:8px;padding:24px 24px 40px;
  background:rgba(5,8,15,.97);backdrop-filter:blur(18px);overflow-y:auto;
}
.nav-drawer.open{display:flex}
.drawer-links{display:flex;flex-direction:column;gap:6px;margin-bottom:auto}
.drawer-links a{
  padding:16px 14px;font-size:19px;font-weight:700;color:var(--t-1);
  border-radius:14px;border:1px solid transparent;
  transition:background 180ms var(--ease),border-color 180ms var(--ease);
}
.drawer-links a:hover,.drawer-links a.active{background:var(--glass);border-color:var(--line)}

/* ============ Hero (分类页矮 KV) ============ */
.hero-cat{position:relative;overflow:hidden;background:var(--bg-1);min-height:360px;display:flex;align-items:center;padding:52px 0 60px}
.hero-bg{
  position:absolute;inset:0;background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,.70) 0%,rgba(5,8,15,.84) 62%,var(--bg-0) 100%);
}
.hero-bg::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(900px 320px at 12% 22%,rgba(23,198,168,.18),transparent 68%);
}
.hero-cat-inner{position:relative;z-index:2;width:100%}

.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--t-3);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a{transition:color 160ms var(--ease)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:var(--t-3)}
.breadcrumb [aria-current]{color:var(--t-2)}

.kicker{
  display:inline-block;font-family:var(--font-num);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--c-primary);margin:0 0 12px;
}
h1{
  font-size:clamp(30px,4.4vw,52px);font-weight:900;line-height:1.18;
  letter-spacing:-.01em;color:var(--t-1);margin:0 0 16px;max-width:22em;
}
.hero-sub{font-size:17px;line-height:1.85;color:var(--t-2);max-width:52ch;margin:0 0 26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}

.hero-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;max-width:760px}
.hero-stats li{
  background:var(--glass);border:1px solid var(--line);border-radius:14px;
  padding:14px 16px;backdrop-filter:blur(8px);
  transition:border-color 200ms var(--ease),background 200ms var(--ease);
}
.hero-stats li:hover{border-color:rgba(23,198,168,.42);background:var(--glass-strong)}
.hero-stats strong{
  display:block;font-family:var(--font-num);font-size:26px;font-weight:700;
  color:var(--t-1);line-height:1.15;font-variant-numeric:tabular-nums;
}
.hero-stats span{font-size:13px;color:var(--t-3)}

/* ============ Sections ============ */
.section{padding:96px 0}
.section--alt{background:var(--bg-1)}
.section--tight{padding:64px 0}
.section-head{max-width:780px;margin-bottom:48px}
h2{font-size:clamp(24px,3vw,36px);font-weight:800;line-height:1.28;color:var(--t-1);margin:0 0 14px}
h3{font-size:20px;font-weight:700;line-height:1.45;color:var(--t-1);margin:0 0 10px}
.lead{font-size:16.5px;line-height:1.85;color:var(--t-2);margin:0;max-width:52ch}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:var(--glass-strong);border:1px solid var(--line-strong);
  font-size:12.5px;font-weight:700;color:var(--t-1);letter-spacing:.02em;
}
.tag--gold{color:#FFD68A;border-color:rgba(255,176,32,.45);background:rgba(255,176,32,.12)}
.tag--info{color:#BBD4FF;border-color:rgba(111,168,255,.4);background:rgba(111,168,255,.12)}

/* ============ Zigzag ============ */
.zigzag{display:flex;flex-direction:column;gap:28px}
.zig-row{
  display:grid;grid-template-columns:repeat(12,1fr);gap:32px;align-items:center;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-panel);
  padding:28px;transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease),background 220ms var(--ease);
}
.zig-row:hover{border-color:rgba(23,198,168,.42);box-shadow:var(--shadow-glass);background:var(--glass-strong)}
.zig-media{grid-column:span 6;border-radius:var(--r-img);overflow:hidden;background:linear-gradient(140deg,var(--bg-3),var(--c-primary-dark))}
.zig-media img{width:100%;height:300px;object-fit:cover;transition:transform 320ms var(--ease)}
.zig-row:hover .zig-media img{transform:scale(1.03)}
.zig-body{grid-column:span 6}
.zig-body .tag{margin-bottom:12px}
.zig-body p{font-size:16px;color:var(--t-2);margin-bottom:14px}
.zig-row.reverse .zig-media{order:2}
.zig-row.reverse .zig-body{order:1}

.mini-list{display:flex;flex-direction:column;gap:8px;margin:0 0 18px}
.mini-list li{position:relative;padding-left:20px;font-size:15px;color:var(--t-2)}
.mini-list li::before{
  content:"";position:absolute;left:4px;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--c-primary);box-shadow:0 0 0 3px rgba(23,198,168,.16);
}

.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:700;color:var(--c-primary);
  border-bottom:2px solid transparent;transition:border-color 160ms var(--ease),gap 180ms var(--ease),color 160ms var(--ease);
}
.link-arrow:hover{border-bottom-color:var(--c-primary);gap:12px}
.link-arrow span{font-family:var(--font-num)}

/* ============ Cards ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease),background 220ms var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(23,198,168,.42);box-shadow:var(--shadow-glass)}
.card-num{
  display:inline-block;font-family:var(--font-num);font-size:13px;font-weight:700;
  letter-spacing:.16em;color:var(--c-primary);margin-bottom:12px;
}
.card p{font-size:15.5px;color:var(--t-2);margin:0}
.card--gold:hover{border-color:rgba(255,176,32,.5);box-shadow:0 20px 50px rgba(255,176,32,.14)}
.card--gold .card-num{color:var(--c-accent)}

/* ============ Steps ============ */
.steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}
.step{
  position:relative;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 20px 22px;
  transition:transform 220ms var(--ease),border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.step::before{
  content:"";position:absolute;left:20px;right:20px;top:0;height:2px;
  background:linear-gradient(90deg,var(--c-primary),transparent);opacity:.45;
}
.step:hover{transform:translateY(-4px);border-color:rgba(23,198,168,.42)}
.step-num{font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--c-primary);display:block;margin-bottom:10px}
.step h3{font-size:17px}
.step p{font-size:14.5px;color:var(--t-2);margin:0}
.step.on{
  border-color:rgba(23,198,168,.62);
  box-shadow:0 0 0 1px rgba(23,198,168,.28),0 18px 46px rgba(23,198,168,.18);
  background:var(--bg-3);
}
.step.on .step-num{color:var(--c-primary)}

/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{
  position:relative;background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:border-color 200ms var(--ease),background 200ms var(--ease);
}
.faq-item:hover{border-color:rgba(23,198,168,.4);background:var(--glass-strong)}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary);
  transform:scaleY(0);transform-origin:top;transition:transform 220ms var(--ease);
}
.faq-item[open]::before{transform:scaleY(1)}
.faq-item summary{
  cursor:pointer;list-style:none;padding:18px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16.5px;font-weight:700;color:var(--t-1);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"⌄";font-family:var(--font-num);font-size:20px;line-height:1;
  color:var(--c-primary);flex:0 0 auto;transition:transform 220ms var(--ease);
}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-body{padding:0 22px 20px;font-size:15.5px;line-height:1.85;color:var(--t-2)}

/* ============ CTA band ============ */
.cta-band-wrap{padding:8px 0 96px}
.cta-band{
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:1.25fr .75fr;gap:32px;align-items:center;
  background:linear-gradient(135deg,var(--bg-2),var(--bg-1));
  border:1px solid var(--line-strong);border-radius:var(--r-panel);
  padding:44px;
  box-shadow:var(--shadow-glass);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,198,168,.22),transparent 70%);
}
.cta-band-inner{position:relative;z-index:2}
.cta-band h2{margin-bottom:12px}
.cta-band p{font-size:16px;color:var(--t-2);margin:0;max-width:48ch}
.cta-band-actions{position:relative;z-index:2;display:flex;flex-direction:column;gap:12px}

/* ============ Footer ============ */
.site-footer{background:#03060C;border-top:1px solid var(--line);padding:64px 0 28px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-brand p{font-size:14.5px;line-height:1.85;color:var(--t-3);max-width:36ch;margin:16px 0 0}
.foot-col h4{font-size:15px;font-weight:700;color:var(--t-1);margin:0 0 16px}
.foot-col ul{display:flex;flex-direction:column;gap:10px}
.foot-col a{font-size:14.5px;color:var(--t-2);transition:color 160ms var(--ease)}
.foot-col a:hover{color:var(--c-primary)}
.foot-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--t-3);
}
.foot-bottom p{margin:0}
.to-top{color:var(--t-2);transition:color 160ms var(--ease)}
.to-top:hover{color:var(--c-primary)}

/* ============ Floating ============ */
.back-top{
  position:fixed;right:24px;bottom:28px;z-index:65;
  width:46px;height:46px;border-radius:50%;
  background:var(--glass-strong);border:1px solid var(--line-strong);color:var(--t-1);
  backdrop-filter:blur(10px);cursor:pointer;display:grid;place-items:center;
  font-size:16px;opacity:0;visibility:hidden;
  transition:opacity 200ms var(--ease),visibility 200ms var(--ease),transform 200ms var(--ease),border-color 200ms var(--ease);
}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{transform:translateY(-3px);border-color:rgba(23,198,168,.6);color:var(--c-primary)}

.mobile-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;gap:10px;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:rgba(5,8,15,.95);border-top:1px solid var(--line);
  backdrop-filter:blur(12px);
}
.mobile-cta .btn{flex:1}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* ============ 1024 ============ */
@media (max-width:1024px){
  .section{padding:72px 0}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(3,minmax(0,1fr))}
  .nav-links a{padding:10px 8px;font-size:14.5px}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr}
  .foot-grid .foot-col:last-child{grid-column:span 3}
}

/* ============ 768 ============ */
@media (max-width:768px){
  .container{padding:0 18px}
  .header-inner{height:64px;gap:12px}
  .nav-links,.nav-actions{display:none}
  .hamburger{display:grid}
  .nav-drawer{top:64px}
  body{padding-bottom:78px}

  .hero-cat{min-height:0;padding:36px 0 44px}
  h1{font-size:clamp(27px,7.6vw,36px)}
  .hero-sub{font-size:15.5px;margin-bottom:22px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}

  .section{padding:56px 0}
  .section--tight{padding:44px 0}
  .section-head{margin-bottom:32px}

  .zig-row{grid-template-columns:1fr;gap:20px;padding:20px}
  .zig-media,.zig-body{grid-column:span 1}
  .zig-media img{height:220px}
  .zig-row.reverse .zig-media{order:0}
  .zig-row.reverse .zig-body{order:0}

  .grid-3,.grid-4,.steps{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:30px 24px;gap:24px}
  .cta-band-actions .btn{width:100%}
  .cta-band-wrap{padding-bottom:56px}

  .foot-grid{grid-template-columns:1fr;gap:32px}
  .foot-grid .foot-col:last-child{grid-column:auto}
  .site-footer{padding:48px 0 24px}
  .foot-bottom{flex-direction:column;align-items:flex-start}

  .mobile-cta{display:flex}
  .back-top{right:16px;bottom:92px}
}

/* ============ 520 ============ */
@media (max-width:520px){
  body{font-size:16px;line-height:1.8}
  .brand-text strong{font-size:14.5px}
  .brand-text span{font-size:9px;letter-spacing:.18em}
  .brand-mark{width:34px;height:34px;font-size:16px;border-radius:10px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:10px}
  .hero-stats strong{font-size:22px}
  .card{padding:22px 18px}
  .step{padding:22px 18px}
  .faq-item summary{padding:16px 18px;font-size:15.5px}
  .faq-body{padding:0 18px 18px}
  .cta-band h2{font-size:23px}
  .foot-brand p{font-size:14px}
  .mobile-cta .btn{font-size:14.5px;padding:0 12px}
}

@media (min-width:769px){
  .nav-drawer{display:none !important}
}

/* roulang page: category2 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --bg-3:#16233A;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --c-primary:#17C6A8;
  --c-primary-dark:#0E9B84;
  --c-accent:#FFB020;
  --c-alert:#FF5A5F;
  --c-info:#6FA8FF;
  --t-1:#EAF2FF;
  --t-2:rgba(234,242,255,.72);
  --t-3:rgba(234,242,255,.46);
  --t-inv:#04140F;
  --r-card:18px;
  --r-panel:24px;
  --r-btn:12px;
  --shadow-card:0 24px 64px rgba(0,0,0,.45);
  --shadow-btn:0 10px 30px rgba(23,198,168,.34);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg-0);
  color:var(--t-2);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none;transition:color .18s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{color:var(--t-1);line-height:1.28;font-weight:800;letter-spacing:-.01em}
ul{list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";letter-spacing:.02em}

/* ============ HEADER ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(5,8,15,.74);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.site-header.is-scrolled{background:rgba(5,8,15,.94);border-bottom-color:var(--line-strong)}
.header-inner{height:72px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--c-primary),#0C8C79 70%);
  color:var(--t-inv);font-weight:900;font-size:18px;letter-spacing:-.02em;
  box-shadow:0 8px 22px rgba(23,198,168,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{color:var(--t-1);font-size:16px;font-weight:800;letter-spacing:.01em}
.brand-text span{font-size:10px;letter-spacing:.22em;color:var(--t-3);font-weight:600}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px;flex:1}
.nav-links a{
  position:relative;padding:9px 13px;border-radius:10px;
  font-size:14.5px;color:var(--t-2);white-space:nowrap;
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .16s var(--ease);
}
.nav-links a:hover{color:var(--t-1);background:var(--glass)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--t-1);background:var(--glass)}
.nav-links a.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:700;cursor:pointer;border:1px solid transparent;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--c-primary),#12AE94);
  color:var(--t-inv);box-shadow:var(--shadow-btn);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 38px rgba(23,198,168,.46)}
.btn-primary:active{transform:translateY(0);filter:brightness(.94)}
.btn-ghost{
  background:var(--glass);color:var(--t-1);border-color:var(--line-strong);
}
.btn-ghost:hover{background:var(--glass-strong);border-color:rgba(23,198,168,.5);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0);filter:brightness(.94)}
.btn-block{width:100%}
.burger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line-strong);
  cursor:pointer;align-items:center;justify-content:center;
}
.burger span{display:block;width:18px;height:2px;background:var(--t-1);border-radius:2px;position:relative}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t-1);border-radius:2px;
  transition:transform .18s var(--ease);
}
.burger span::before{top:-6px}
.burger span::after{top:6px}
.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(5,8,15,.97);
  backdrop-filter:blur(20px);
  padding:16px 24px 88px;
}
.drawer.is-open{display:block;animation:drawerIn .22s var(--ease)}
@keyframes drawerIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.drawer a.drawer-link{
  display:block;padding:14px 4px;font-size:18px;font-weight:700;color:var(--t-1);
  border-bottom:1px solid var(--line);
}
.drawer a.drawer-link:last-of-type{border-bottom:none}
.drawer .drawer-cta{margin-top:18px}

/* ============ HERO ============ */
.page-hero{
  position:relative;
  padding:132px 0 76px;
  background-image:linear-gradient(180deg,rgba(5,8,15,.82),rgba(5,8,15,.9) 55%,var(--bg-0)),
    url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:140px;
  background:linear-gradient(180deg,rgba(5,8,15,0),var(--bg-0));
  pointer-events:none;
}
.hero-track{
  position:absolute;top:112px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(23,198,168,0),rgba(23,198,168,.65),rgba(23,198,168,0));
  opacity:.75;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--t-3);margin-bottom:20px;position:relative;z-index:2}
.breadcrumb a{color:var(--t-2)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .now{color:var(--t-1)}
.hero-inner{position:relative;z-index:2;max-width:820px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line-strong);
  font-size:12.5px;letter-spacing:.08em;color:var(--c-primary);font-weight:700;
  margin-bottom:20px;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--c-primary);display:block;box-shadow:0 0 10px rgba(23,198,168,.9)}
.page-hero h1{
  font-size:clamp(30px,4.2vw,48px);font-weight:900;color:var(--t-1);
  margin-bottom:18px;letter-spacing:-.01em;
}
.hero-lead{font-size:17px;color:var(--t-2);max-width:44em;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

/* ============ DATA BAND ============ */
.data-band{
  background:var(--bg-1);
  border-bottom:1px solid var(--line);
  padding:28px 0;
}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.data-item{display:flex;flex-direction:column;gap:4px}
.data-item strong{font-size:26px;font-weight:800;color:var(--t-1);line-height:1.2}
.data-item strong em{font-style:normal;color:var(--c-accent);font-size:18px;margin-left:2px}
.data-item span{font-size:13px;color:var(--t-3)}
.data-item::before{
  content:"";display:block;width:26px;height:2px;border-radius:2px;
  background:rgba(23,198,168,.6);margin-bottom:8px;
}

/* ============ SECTIONS ============ */
.section{padding:88px 0}
.section.alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:44px}
.section-head .kicker{
  display:inline-block;font-size:12.5px;letter-spacing:.16em;font-weight:700;
  color:var(--c-primary);margin-bottom:12px;
}
.section-head h2{font-size:clamp(23px,2.8vw,34px);margin-bottom:14px}
.section-head p{color:var(--t-2);font-size:16px;max-width:44em}

/* big banner card */
.banner-card{
  position:relative;border-radius:var(--r-panel);overflow:hidden;
  border:1px solid var(--line);
  background:var(--bg-2);
  box-shadow:var(--shadow-card);
}
.banner-card img{width:100%;height:420px;transition:transform .5s var(--ease)}
.banner-card:hover img{transform:scale(1.03)}
.banner-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,.15) 25%,rgba(5,8,15,.88));
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:32px;
}
.banner-overlay h3{font-size:clamp(20px,2.2vw,26px);margin-bottom:10px}
.banner-overlay p{color:var(--t-2);font-size:15px;max-width:52em;margin-bottom:18px}
.badge-row{display:flex;flex-wrap:wrap;gap:10px}
.badge{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid var(--line-strong);
  font-size:13px;color:var(--t-1);backdrop-filter:blur(8px);
}
.badge.gold{color:var(--c-accent);border-color:rgba(255,176,32,.45);background:rgba(255,176,32,.1)}
.badge.mint{color:var(--c-primary);border-color:rgba(23,198,168,.45);background:rgba(23,198,168,.1)}

/* numbered rows */
.venue-list{display:flex;flex-direction:column;gap:14px}
.venue-row{
  display:grid;
  grid-template-columns:64px 150px 1fr auto;
  align-items:center;gap:22px;
  padding:18px 22px;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  transition:border-color .18s var(--ease),transform .18s var(--ease),background .18s var(--ease);
}
.venue-row:hover{border-color:rgba(23,198,168,.42);background:var(--bg-3);transform:translateY(-2px)}
.venue-no{
  font-size:22px;font-weight:800;color:var(--c-primary);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;
}
.venue-thumb{width:150px;height:96px;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:linear-gradient(135deg,var(--bg-3),rgba(23,198,168,.18))}
.venue-thumb img{width:100%;height:100%}
.venue-body h3{font-size:19px;margin-bottom:6px}
.venue-body p{font-size:14.5px;color:var(--t-2);margin-bottom:10px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  font-size:12.5px;padding:4px 11px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);color:var(--t-3);
}
.venue-link{
  font-size:14px;font-weight:700;color:var(--c-primary);white-space:nowrap;
  display:inline-flex;align-items:center;gap:6px;
}
.venue-link:hover{color:var(--t-1)}
.venue-link::after{content:"→";transition:transform .18s var(--ease)}
.venue-link:hover::after{transform:translateX(4px)}

/* two column asymmetric */
.split{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.split-intro h2{font-size:clamp(23px,2.8vw,32px);margin-bottom:16px}
.split-intro p{font-size:16px;margin-bottom:20px}
.point-list{display:flex;flex-direction:column;gap:12px}
.point-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--t-2)}
.point-list li::before{
  content:"";flex-shrink:0;width:8px;height:8px;border-radius:50%;
  margin-top:9px;background:var(--c-primary);box-shadow:0 0 10px rgba(23,198,168,.6);
}
.time-panel{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-panel);
  padding:10px 24px;box-shadow:var(--shadow-card);
}
.time-row{
  display:grid;grid-template-columns:150px 1fr;gap:20px;
  padding:20px 0;border-bottom:1px solid var(--line);align-items:center;
}
.time-row:last-child{border-bottom:none}
.time-row .t-code{font-size:16px;font-weight:800;color:var(--c-primary);font-variant-numeric:tabular-nums}
.time-row .t-code small{display:block;font-size:12px;color:var(--t-3);font-weight:600;letter-spacing:.06em;margin-top:2px}
.time-row h4{font-size:16px;margin-bottom:4px;color:var(--t-1)}
.time-row p{font-size:14px;color:var(--t-2)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.step{
  position:relative;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 22px 24px;
  transition:border-color .18s var(--ease),transform .18s var(--ease);
}
.step:hover{border-color:rgba(23,198,168,.4);transform:translateY(-3px)}
.step::before{
  counter-increment:step;content:"0" counter(step);
  display:block;font-size:13px;font-weight:800;letter-spacing:.14em;
  color:var(--c-accent);margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--t-2)}
.step-line{
  height:1px;background:linear-gradient(90deg,rgba(23,198,168,.5),rgba(23,198,168,0));
  margin:26px 0 0;
}

/* faq */
.faq-wrap{max-width:900px;display:flex;flex-direction:column;gap:12px}
details.faq{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:4px 22px;transition:border-color .18s var(--ease),background .18s var(--ease);
}
details.faq[open]{border-color:rgba(23,198,168,.4);background:var(--glass-strong);position:relative}
details.faq[open]::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;background:var(--c-primary);
}
details.faq summary{
  list-style:none;cursor:pointer;padding:18px 34px 18px 6px;position:relative;
  font-size:16px;font-weight:700;color:var(--t-1);
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{
  content:"";position:absolute;right:6px;top:50%;width:9px;height:9px;
  border-right:2px solid var(--t-2);border-bottom:2px solid var(--t-2);
  transform:translateY(-70%) rotate(45deg);
  transition:transform .2s var(--ease);
}
details.faq[open] summary::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--c-primary)}
details.faq .faq-body{padding:0 6px 20px;font-size:15px;color:var(--t-2);max-width:46em}

/* CTA */
.cta-panel{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(23,198,168,.14),rgba(16,27,46,.9) 55%);
  border:1px solid var(--line-strong);
  border-radius:var(--r-panel);
  padding:52px 48px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;
  box-shadow:var(--shadow-card);
}
.cta-panel::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,198,168,.28),rgba(23,198,168,0) 70%);
  pointer-events:none;
}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:12px;position:relative;z-index:1}
.cta-panel p{color:var(--t-2);max-width:48em;font-size:15.5px;position:relative;z-index:1}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1}

/* footer */
.site-footer{background:#04070D;border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.foot-brand p{font-size:14px;color:var(--t-3);margin-top:18px;max-width:34em;line-height:1.85}
.foot-col h4{font-size:15px;color:var(--t-1);margin-bottom:16px;font-weight:700}
.foot-col ul{display:flex;flex-direction:column;gap:10px}
.foot-col a{font-size:14px;color:var(--t-2)}
.foot-col a:hover{color:var(--c-primary)}
.foot-bottom{
  border-top:1px solid var(--line);padding:22px 0 26px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
}
.foot-bottom p{font-size:13px;color:var(--t-3)}
.to-top{font-size:13.5px;color:var(--t-2);font-weight:700}
.to-top:hover{color:var(--c-primary)}

/* mobile sticky cta */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(5,8,15,.95);backdrop-filter:blur(14px);
  border-top:1px solid var(--line-strong);gap:10px;
}
.mobile-bar .btn{flex:1;min-height:46px}

/* ============ RESPONSIVE ============ */
@media (max-width:1200px){
  .nav-links a{padding:9px 10px;font-size:14px}
  .header-inner{gap:16px}
}
@media (max-width:1024px){
  .nav-links,.header-actions .btn-ghost{display:none}
  .burger{display:inline-flex}
  .split{grid-template-columns:1fr;gap:32px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .data-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .banner-card img{height:340px}
  .venue-row{grid-template-columns:52px 130px 1fr;gap:18px}
  .venue-row .venue-link{grid-column:2 / -1;justify-self:start}
  .venue-thumb{width:130px;height:88px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .page-hero{padding:112px 0 56px}
  .section{padding:56px 0}
  .section-head{margin-bottom:30px}
  .venue-row{grid-template-columns:44px 1fr;gap:14px;padding:16px}
  .venue-thumb{display:none}
  .venue-row .venue-link{grid-column:2 / -1}
  .banner-card img{height:260px}
  .banner-overlay{padding:22px}
  .cta-panel{padding:34px 24px}
  .mobile-bar{display:flex}
  .site-footer{padding-bottom:76px}
  .time-row{grid-template-columns:1fr;gap:6px}
  .steps{grid-template-columns:1fr;gap:14px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-text strong{font-size:14px}
  .data-grid{grid-template-columns:1fr;gap:16px}
  .data-item strong{font-size:22px}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .badge{font-size:12px;padding:5px 11px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --bg-3:#16233A;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --c-primary:#17C6A8;
  --c-primary-dark:#0E9B84;
  --c-accent:#FFB020;
  --c-alert:#FF5A5F;
  --c-info:#6FA8FF;
  --t-1:#EAF2FF;
  --t-2:rgba(234,242,255,.72);
  --t-3:rgba(234,242,255,.46);
  --t-inv:#04140F;
  --r-card:18px;
  --r-panel:24px;
  --r-btn:12px;
  --shadow-card:0 24px 64px rgba(0,0,0,.45);
  --shadow-btn:0 10px 30px rgba(23,198,168,.34);
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:"Sora","Space Grotesk",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-1);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
p{color:var(--t-2)}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(23,198,168,.32)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

.sec-head{max-width:720px;margin-bottom:40px}
.sec-head h2{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.3;letter-spacing:-.01em}
.sec-head p{margin-top:12px;font-size:16px;line-height:1.85}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line-strong);
  color:var(--c-primary);font-size:13px;font-weight:700;letter-spacing:.08em;
}
.kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 10px var(--c-primary)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15px;font-weight:700;
  cursor:pointer;white-space:nowrap;
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),background 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease);
}
.btn-primary{background:var(--c-primary);color:var(--t-inv);box-shadow:var(--shadow-btn)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(23,198,168,.46)}
.btn-primary:active{transform:translateY(0);background:var(--c-primary-dark);box-shadow:0 6px 18px rgba(23,198,168,.28)}
.btn-ghost{background:var(--glass);border-color:var(--line-strong);color:var(--t-1)}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(23,198,168,.5);background:var(--glass-strong)}
.btn-ghost:active{transform:translateY(0);background:var(--bg-3)}
.btn-block{width:100%}
.btn[disabled]{opacity:.45;pointer-events:none}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,8,15,.86);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:20px;min-height:72px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:12px;flex:0 0 auto;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),#0b7f6c);
  color:var(--t-inv);font-weight:900;font-size:18px;font-family:var(--mono);
  box-shadow:0 8px 22px rgba(23,198,168,.3);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.01em}
.brand-text span{font-size:10px;letter-spacing:.24em;color:var(--t-3);font-family:var(--mono)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{
  position:relative;padding:10px 13px;border-radius:10px;
  color:var(--t-2);font-size:15px;font-weight:500;
  transition:color 180ms var(--ease),background 180ms var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:13px;right:13px;bottom:5px;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform 120ms ease;
}
.nav-links a:hover{color:var(--t-1);background:var(--glass)}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:var(--t-1);font-weight:700}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:6px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);background:var(--glass);
  cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t-1);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t-1);border-radius:2px;
  transition:transform 180ms var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:rgba(6,10,18,.98);
  padding:18px 24px 24px;
}
.mobile-panel.open{display:block}
.mobile-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:16px}
.mobile-nav a{
  padding:14px 6px;font-size:17px;font-weight:600;color:var(--t-2);
  border-bottom:1px solid var(--line);
  transition:color 180ms var(--ease),padding-left 180ms var(--ease);
}
.mobile-nav a:hover,.mobile-nav a.active{color:var(--c-primary);padding-left:12px}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:64px 0 60px;
  background:linear-gradient(180deg,var(--bg-1) 0%,var(--bg-0) 100%);
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(90deg,rgba(23,198,168,.07) 1px,transparent 1px);
  background-size:140px 100%;
  opacity:.6;
}
.page-hero::after{
  content:"";position:absolute;right:-10%;top:-40%;
  width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,198,168,.16),transparent 62%);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.track-deco{
  height:1px;margin-bottom:26px;
  background:linear-gradient(90deg,rgba(23,198,168,0) 0%,var(--c-primary) 22%,rgba(255,176,32,.75) 62%,rgba(23,198,168,0) 100%);
}
.breadcrumb{font-size:13px;color:var(--t-3);margin-bottom:18px}
.breadcrumb a{color:var(--t-3);transition:color 180ms var(--ease)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb span{margin:0 8px;color:var(--t-3)}
.page-hero h1{
  margin-top:18px;
  font-size:clamp(30px,4.2vw,50px);
  font-weight:900;line-height:1.2;letter-spacing:-.015em;
  max-width:16em;
}
.page-hero .lead{
  margin-top:18px;max-width:44em;
  font-size:16.5px;line-height:1.9;color:var(--t-2);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

/* ---------- 概览卡 ---------- */
.fact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:8px}
.fact{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.fact:hover{transform:translateY(-4px);border-color:rgba(23,198,168,.42);box-shadow:var(--shadow-card)}
.fact .fact-tag{font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--c-primary)}
.fact h3{margin-top:12px;font-size:18px;font-weight:800}
.fact p{margin-top:10px;font-size:14.5px;line-height:1.8;color:var(--t-2)}

/* ---------- 时间线 ---------- */
.timeline{position:relative;padding-left:34px;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:9px;top:10px;bottom:10px;width:1px;
  background:linear-gradient(180deg,var(--c-primary),rgba(255,255,255,.12) 30%,rgba(255,255,255,.12) 80%,rgba(23,198,168,.4));
}
.tl-item{position:relative;margin-bottom:18px}
.tl-item::before{
  content:"";position:absolute;left:-30px;top:26px;
  width:12px;height:12px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--line-strong);
  transition:all 180ms var(--ease);
}
.tl-item.is-current::before{
  background:var(--c-primary);border-color:var(--c-primary);
  box-shadow:0 0 0 6px rgba(23,198,168,.14),0 0 22px rgba(23,198,168,.7);
}
.tl-card{
  display:flex;align-items:flex-start;gap:22px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),background 180ms var(--ease);
}
.tl-card:hover{transform:translateY(-3px);border-color:rgba(23,198,168,.42);background:var(--glass-strong)}
.tl-num{
  font-family:var(--mono);font-size:22px;font-weight:800;color:var(--c-primary);
  min-width:52px;padding-top:2px;font-variant-numeric:tabular-nums;
}
.tl-body{flex:1;min-width:0}
.tl-body h3{font-size:19px;font-weight:800;line-height:1.4}
.tl-body p{margin-top:8px;font-size:15px;line-height:1.85;color:var(--t-2);max-width:60ch}
.tl-tag{
  flex:0 0 auto;align-self:flex-start;
  padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:700;
  background:rgba(111,168,255,.12);border:1px solid rgba(111,168,255,.3);color:var(--c-info);
}
.tl-item.is-current .tl-tag{background:rgba(23,198,168,.14);border-color:rgba(23,198,168,.4);color:var(--c-primary)}

/* ---------- 规则对比 ---------- */
.compare{
  display:grid;grid-template-columns:1fr 1fr;
  background:var(--glass);border:1px solid var(--line-strong);
  border-radius:var(--r-panel);overflow:hidden;
  box-shadow:var(--shadow-card);
}
.compare-col{padding:32px 30px}
.compare-col + .compare-col{border-left:1px solid var(--line)}
.compare-col h3{font-size:20px;font-weight:800;display:flex;align-items:center;gap:10px}
.compare-col h3 .dot{width:8px;height:8px;border-radius:50%;background:var(--c-primary)}
.compare-col.accent h3 .dot{background:var(--c-accent);box-shadow:0 0 12px rgba(255,176,32,.7)}
.compare-col .sub{margin-top:8px;font-size:14px;color:var(--t-3)}
.compare-col ul{margin-top:20px;display:grid;gap:14px}
.compare-col li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;line-height:1.8;color:var(--t-2);
}
.compare-col li .tick{
  flex:0 0 auto;width:20px;height:20px;border-radius:50%;margin-top:4px;
  display:grid;place-items:center;font-size:11px;font-weight:900;
  background:rgba(23,198,168,.16);color:var(--c-primary);
}
.compare-col.accent li .tick{background:rgba(255,176,32,.16);color:var(--c-accent)}

/* ---------- 图文区 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split-media{
  position:relative;border-radius:var(--r-panel);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.split-media .badge-float{
  position:absolute;left:18px;bottom:18px;
  padding:8px 14px;border-radius:999px;font-size:12.5px;font-weight:700;
  background:rgba(5,8,15,.78);border:1px solid var(--line-strong);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  color:var(--t-1);
}
.split-body h2{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.3}
.split-body > p{margin-top:14px}
.rule-list{margin-top:26px;display:grid;gap:16px}
.rule-list li{
  padding-left:18px;border-left:2px solid rgba(23,198,168,.5);
}
.rule-list strong{display:block;font-size:16px;font-weight:800;color:var(--t-1)}
.rule-list span{display:block;margin-top:6px;font-size:14.5px;line-height:1.8;color:var(--t-2)}

/* ---------- 编号清单 ---------- */
.check-list{display:grid;gap:12px}
.check-item{
  display:flex;align-items:center;gap:20px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:14px;
  padding:18px 24px;
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),background 180ms var(--ease);
}
.check-item:hover{transform:translateX(6px);border-color:rgba(23,198,168,.45);background:var(--bg-3)}
.check-num{
  font-family:var(--mono);font-size:19px;font-weight:800;color:var(--c-primary);
  min-width:46px;font-variant-numeric:tabular-nums;
}
.check-item p{font-size:15.5px;color:var(--t-1)}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;max-width:900px}
.faq details{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:border-color 180ms var(--ease),background 180ms var(--ease);
}
.faq details[open]{background:var(--glass-strong);border-color:rgba(23,198,168,.38)}
.faq summary{
  list-style:none;cursor:pointer;
  padding:20px 24px 20px 30px;position:relative;
  font-size:16.5px;font-weight:700;color:var(--t-1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";flex:0 0 auto;width:10px;height:10px;
  border-right:2px solid var(--t-3);border-bottom:2px solid var(--t-3);
  transform:rotate(45deg);transition:transform 200ms var(--ease);
}
.faq details[open] summary::after{transform:rotate(-135deg);border-color:var(--c-primary)}
.faq details[open] summary::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.faq .faq-body{padding:0 24px 22px 30px;font-size:15.5px;line-height:1.9;color:var(--t-2)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border:1px solid var(--line-strong);border-radius:var(--r-panel);
  padding:56px 48px;text-align:center;
  background-image:linear-gradient(180deg,rgba(5,8,15,.86),rgba(5,8,15,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(24px,3vw,34px);font-weight:900;line-height:1.28}
.cta-band p{margin:16px auto 0;max-width:52ch;font-size:16px;color:var(--t-2)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:30px}
.cta-note{margin-top:20px;font-size:13px;color:var(--t-3)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#04070D;border-top:1px solid var(--line);
  padding:64px 0 26px;margin-top:96px;
}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
.foot-brand p{margin-top:18px;font-size:14.5px;line-height:1.85;color:var(--t-3);max-width:38ch}
.foot-col h4{font-size:14px;font-weight:800;letter-spacing:.06em;color:var(--t-1);margin-bottom:16px}
.foot-col ul{display:grid;gap:10px}
.foot-col a{font-size:14.5px;color:var(--t-3);transition:color 180ms var(--ease),padding-left 180ms var(--ease)}
.foot-col a:hover{color:var(--c-primary);padding-left:4px}
.foot-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;
}
.foot-bottom p{font-size:13px;color:var(--t-3)}
.to-top{font-size:13px;color:var(--t-2);transition:color 180ms var(--ease)}
.to-top:hover{color:var(--c-primary)}

/* ---------- 移动吸底 ---------- */
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  gap:10px;padding:12px 16px calc(12px + env(safe-area-inset-bottom,0px));
  background:rgba(5,8,15,.94);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
}
.sticky-cta .btn{flex:1;min-height:46px;padding:0 12px;font-size:14.5px}

/* ---------- 断点 ---------- */
@media (max-width:1200px){
  .fact-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:992px){
  .nav-links{display:none}
  .header-actions .btn-ghost{display:none}
  .nav-toggle{display:inline-flex}
  .split{grid-template-columns:1fr;gap:32px}
  .split-media{order:-1}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:68px 0}
}
@media (max-width:768px){
  .compare{grid-template-columns:1fr}
  .compare-col + .compare-col{border-left:0;border-top:1px solid var(--line)}
  .cta-band{padding:40px 24px}
  .sticky-cta{display:flex}
  body{padding-bottom:86px}
  .page-hero{padding:48px 0 44px}
  .tl-card{flex-wrap:wrap;gap:14px}
  .tl-num{min-width:auto}
  .tl-tag{order:3}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .fact-grid{grid-template-columns:1fr}
  .brand-text span{display:none}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:1fr}
  .timeline{padding-left:26px}
  .tl-item::before{left:-24px}
  .timeline::before{left:6px}
  .check-item{padding:16px 18px;gap:14px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category4 */
:root{
  --bg-0:#05080F;
  --bg-1:#0A1220;
  --bg-2:#101B2E;
  --bg-3:#16233A;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.09);
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --c-primary:#17C6A8;
  --c-primary-dark:#0E9B84;
  --c-accent:#FFB020;
  --c-alert:#FF5A5F;
  --c-info:#6FA8FF;
  --t-1:#EAF2FF;
  --t-2:rgba(234,242,255,.72);
  --t-3:rgba(234,242,255,.46);
  --t-inv:#04140F;
  --r-card:18px;
  --r-panel:24px;
  --r-btn:12px;
  --shadow-glass:0 24px 64px rgba(0,0,0,.45);
  --shadow-glow:0 10px 30px rgba(23,198,168,.34);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1240px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--t-2);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;color:var(--t-1);font-weight:800;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}

.container{width:min(100% - 32px,var(--container));margin-inline:auto}
.section{padding:96px 0}
.section--tight{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:24px;margin-bottom:36px}
.section-head h2{font-size:clamp(24px,3vw,36px);font-weight:800}
.section-head p{margin-top:10px;color:var(--t-2);max-width:56ch;font-size:15.5px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line-strong);
  color:var(--c-primary);font-size:13px;font-weight:700;letter-spacing:.06em;
}
.text-link{color:var(--c-info);font-size:14.5px;font-weight:700;display:inline-flex;align-items:center;gap:6px;transition:color .18s var(--ease)}
.text-link:hover{color:var(--c-primary)}
.text-link::after{content:"→";transition:transform .18s var(--ease)}
.text-link:hover::after{transform:translateX(3px)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,8,15,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:background .18s var(--ease),box-shadow .18s var(--ease);
}
.site-header.is-scrolled{background:rgba(5,8,15,.95);box-shadow:0 14px 34px rgba(0,0,0,.44)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  font-weight:900;font-size:19px;color:var(--t-inv);
  background:linear-gradient(140deg,var(--c-primary),#0E9B84);
  box-shadow:0 10px 26px rgba(23,198,168,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{color:var(--t-1);font-size:16px;font-weight:800}
.brand-text span{font-size:10px;letter-spacing:.22em;color:var(--t-3)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:10px}
.nav-links a{
  position:relative;padding:10px 12px;border-radius:10px;
  font-size:15px;color:var(--t-2);
  transition:color .18s var(--ease),background .18s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:5px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .18s var(--ease);
}
.nav-links a:hover{color:var(--t-1)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--t-1);background:var(--glass)}
.nav-links a.active::after{transform:scaleX(1)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;border:1px solid transparent;white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-primary{background:var(--c-primary);color:var(--t-inv);box-shadow:var(--shadow-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(23,198,168,.48)}
.btn-primary:active{transform:translateY(0);background:var(--c-primary-dark);box-shadow:0 4px 14px rgba(23,198,168,.28)}
.btn-ghost{background:var(--glass);border-color:var(--line-strong);color:var(--t-1)}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(23,198,168,.42);background:var(--glass-strong)}
.btn-ghost:active{transform:translateY(0);background:rgba(255,255,255,.04)}
.btn-lg{min-height:52px;padding:0 26px;font-size:16px}
.btn[disabled]{opacity:.45;pointer-events:none}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line-strong);color:var(--t-1);
  font-size:20px;line-height:1;place-items:center;
}
.nav-toggle:hover{border-color:rgba(23,198,168,.42)}
.mobile-drawer{
  display:none;position:fixed;inset:72px 0 0;z-index:70;
  background:rgba(5,8,15,.97);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  padding:24px 16px 120px;overflow-y:auto;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer a.m-link{
  display:block;padding:16px 14px;border-radius:14px;
  font-size:19px;font-weight:700;color:var(--t-1);
  border:1px solid transparent;
}
.mobile-drawer a.m-link:hover{background:var(--glass)}
.mobile-drawer a.m-link.active{background:var(--glass-strong);border-color:rgba(23,198,168,.42);color:var(--c-primary)}
.mobile-drawer .m-cta{
  position:fixed;left:16px;right:16px;bottom:16px;
  display:flex;gap:10px;
}
.mobile-drawer .m-cta .btn{flex:1}
body.drawer-open{overflow:hidden}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;
  padding:56px 0 56px;
  background:
    radial-gradient(880px 420px at 82% -14%,rgba(23,198,168,.16),transparent 62%),
    linear-gradient(180deg,rgba(5,8,15,.9),var(--bg-0));
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
  opacity:.24;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--t-3);margin-bottom:20px}
.breadcrumb a{color:var(--t-2);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb span.sep{color:var(--t-3)}

.hero-panel{
  display:grid;grid-template-columns:1.06fr .94fr;gap:44px;align-items:center;
  padding:44px;
  border-radius:var(--r-panel);
  background:linear-gradient(180deg,rgba(255,255,255,.082),rgba(255,255,255,.026));
  border:1px solid var(--line);
  box-shadow:var(--shadow-glass),inset 0 1px 0 rgba(255,255,255,.12);
}
.hero-left h1{font-size:clamp(32px,4.4vw,52px);font-weight:900;line-height:1.18;margin:18px 0 14px}
.hero-left .hero-lead{font-size:17px;color:var(--t-2);max-width:32ch}
.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}
.hero-stats .stat b{display:block;font-size:24px;font-weight:800;color:var(--t-1);line-height:1.2}
.hero-stats .stat span{font-size:13px;color:var(--t-3)}
.hero-right{display:flex;flex-direction:column;gap:18px}
.hero-figure{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);background:var(--bg-2);
}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,8,15,.05),rgba(5,8,15,.55));
}
.hero-summary{
  padding:20px 22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  font-size:15px;color:var(--t-2);
}
.hero-summary h2{font-size:16px;font-weight:800;margin-bottom:8px}
.quick-jump{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.quick-jump a{
  padding:8px 14px;border-radius:999px;font-size:14px;font-weight:600;
  background:var(--glass);border:1px solid var(--line-strong);color:var(--t-2);
  transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.quick-jump a:hover{color:var(--t-1);border-color:rgba(23,198,168,.42);transform:translateY(-2px)}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:236px 1fr;gap:48px;align-items:start}
.faq-aside{
  position:sticky;top:104px;
  padding:22px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
}
.faq-aside h3{font-size:15px;margin-bottom:14px}
.faq-aside a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:10px;font-size:14.5px;color:var(--t-2);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.faq-aside a:hover{background:var(--glass-strong);color:var(--t-1)}
.faq-aside a b{color:var(--c-primary);font-size:12.5px;font-weight:800}
.faq-group{margin-bottom:52px;scroll-margin-top:104px}
.faq-group:last-child{margin-bottom:0}
.group-head{display:flex;align-items:baseline;gap:14px;margin-bottom:18px;flex-wrap:wrap}
.group-head .group-index{
  font-size:13px;font-weight:800;letter-spacing:.16em;color:var(--c-primary);
  padding:4px 10px;border-radius:999px;background:rgba(23,198,168,.12);border:1px solid rgba(23,198,168,.3);
}
.group-head h2{font-size:clamp(21px,2.4vw,27px)}
.group-head p{flex:1 1 100%;color:var(--t-3);font-size:14.5px}

details.faq{
  margin-bottom:12px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  border-left:3px solid transparent;
  overflow:hidden;
  transition:border-color .18s var(--ease),background .18s var(--ease);
}
details.faq:hover{border-color:rgba(23,198,168,.28)}
details.faq[open]{
  background:var(--glass-strong);
  border-color:rgba(23,198,168,.32);
  border-left:3px solid var(--c-primary);
}
details.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 22px;font-size:16.5px;font-weight:700;color:var(--t-1);
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary .chev{flex:0 0 auto;color:var(--t-3);font-size:13px;transition:transform .18s var(--ease),color .18s var(--ease)}
details.faq[open] summary .chev{transform:rotate(180deg);color:var(--c-primary)}
.faq-body{padding:0 22px 20px;font-size:15.5px;line-height:1.85;max-width:78ch}
.faq-body p + p{margin-top:10px}
.faq-body ul{display:grid;gap:8px;margin-top:12px}
.faq-body li{position:relative;padding-left:18px;font-size:15px}
.faq-body li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;background:var(--c-primary)}

/* ---------- 权益对比 ---------- */
.compare-scroll{overflow-x:auto;padding-bottom:8px}
.compare{
  min-width:820px;
  display:grid;grid-template-columns:190px repeat(3,minmax(0,1fr));
  gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
}
.cmp-cell{background:var(--bg-2);padding:16px 18px;font-size:14.5px;color:var(--t-2)}
.cmp-cell.head{font-size:16px;font-weight:800;color:var(--t-1)}
.cmp-cell.row-label{background:var(--bg-1);color:var(--t-3);font-weight:700;font-size:14px}
.cmp-col-featured .cmp-cell{background:var(--bg-3)}
.cmp-col-featured .cmp-cell.head{color:var(--c-accent)}
.cmp-badge{
  display:inline-block;margin-left:8px;padding:2px 9px;border-radius:999px;
  font-size:11.5px;font-weight:800;color:#2A1A00;background:var(--c-accent);
  vertical-align:middle;
}
.cmp-yes{color:var(--c-primary);font-weight:700}
.cmp-no{color:var(--t-3);text-decoration:line-through}
.scroll-hint{display:none;margin-top:10px;font-size:13px;color:var(--t-3)}
.compare-note{margin-top:18px;font-size:14px;color:var(--t-3);max-width:70ch}

/* ---------- 图文块 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.split-figure{border-radius:var(--r-panel);overflow:hidden;border:1px solid var(--line);background:var(--bg-2);box-shadow:var(--shadow-glass)}
.split-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split h2{font-size:clamp(23px,2.8vw,32px);margin-bottom:16px}
.split p{max-width:44ch}
.check-list{display:grid;gap:14px;margin-top:24px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:16px 18px;border-radius:14px;
  background:var(--glass);border:1px solid var(--line);
  font-size:15px;
  transition:border-color .18s var(--ease),transform .18s var(--ease);
}
.check-list li:hover{border-color:rgba(23,198,168,.42);transform:translateY(-2px)}
.check-list .tick{
  flex:0 0 auto;width:22px;height:22px;border-radius:7px;margin-top:3px;
  display:grid;place-items:center;font-size:12px;font-weight:900;
  color:var(--t-inv);background:var(--c-primary);
}
.check-list b{color:var(--t-1);display:block;font-size:15.5px;margin-bottom:2px}

/* ---------- CTA ---------- */
.cta-panel{
  display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;
  padding:44px;border-radius:var(--r-panel);
  background:
    radial-gradient(620px 300px at 88% 10%,rgba(23,198,168,.18),transparent 60%),
    linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.024));
  border:1px solid var(--line);
  box-shadow:var(--shadow-glass),inset 0 1px 0 rgba(255,255,255,.12);
}
.cta-panel h2{font-size:clamp(23px,2.8vw,32px);margin-bottom:14px}
.cta-panel p{max-width:46ch}
.cta-points{display:grid;gap:10px;margin-top:22px}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--t-2)}
.cta-points .dot{width:8px;height:8px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 12px rgba(23,198,168,.7)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-note{margin-top:14px;font-size:13px;color:var(--t-3)}

/* ---------- 页脚 ---------- */
.site-footer{background:#04070D;border-top:1px solid var(--line);padding-top:64px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.foot-brand p{margin-top:16px;font-size:14.5px;color:var(--t-3);max-width:38ch}
.foot-col h4{font-size:15px;margin-bottom:16px}
.foot-col li{margin-bottom:10px}
.foot-col a{font-size:14.5px;color:var(--t-2);transition:color .18s var(--ease)}
.foot-col a:hover{color:var(--c-primary)}
.foot-bottom{
  margin-top:52px;padding:22px 0 28px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:var(--t-3);
}
.to-top{color:var(--t-2);font-weight:700;transition:color .18s var(--ease)}
.to-top:hover{color:var(--c-primary)}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .hero-panel{grid-template-columns:1fr;gap:32px}
  .faq-layout{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
}
@media (max-width:900px){
  .section{padding:64px 0}
  .section--tight{padding:48px 0}
  .split{grid-template-columns:1fr;gap:28px}
  .cta-panel{grid-template-columns:1fr;gap:28px;padding:32px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .scroll-hint{display:block}
}
@media (max-width:680px){
  .header-inner{height:64px;gap:12px}
  .mobile-drawer{inset:64px 0 0}
  .brand-text strong{font-size:15px}
  .header-actions .btn-ghost{display:none}
  .hero-panel{padding:26px 22px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:14px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .cta-panel{padding:26px 22px}
  .cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:1fr}
  .faq-body{font-size:15px}
  details.faq summary{padding:16px 18px;font-size:15.5px}
}
@media (max-width:480px){
  body{font-size:15.5px}
  .section{padding:48px 0}
  .hero-left h1{font-size:29px}
  .hero-stats{grid-template-columns:1fr}
  .quick-jump a{font-size:13px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  html{scroll-behavior:auto}
}