/* roulang page: index */
:root{
  --bg-0:#0B0D0F; --bg-1:#12151A; --bg-2:#1A1F26; --surface:#1D232B;
  --line:rgba(255,255,255,.08); --line-strong:rgba(255,255,255,.16);
  --text-0:#F4F7F2; --text-1:#C3CBC5; --text-2:#8A938C;
  --brand:#1FD3A5; --brand-2:#FF8A4C; --brand-soft:rgba(31,211,165,.14);
  --focus:rgba(31,211,165,.32); --danger:#FF5C5C; --success:#1FD3A5;
  --r-card:18px; --r-img:14px; --r-btn:999px; --r-input:12px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --shadow-hover:0 28px 80px rgba(0,0,0,.55);
  --wrap:1320px;
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-0);color:var(--text-1);
  font-family:var(--font);font-size:16px;line-height:1.75;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--text-0);font-weight:700;letter-spacing:0}
p{margin:0}
time,.num{font-variant-numeric:tabular-nums}
::selection{background:rgba(31,211,165,.28);color:#fff}

.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
@media (min-width:1200px){.container{padding:0 32px}}

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

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .32s ease,border-color .32s ease,backdrop-filter .32s ease;
}
.site-header.scrolled{
  background:rgba(11,13,15,.88);
  border-bottom-color:var(--line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:78px}
.logo{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,#2AE3B5,#0E8F72);color:#04150F;
  font-weight:800;font-size:13px;letter-spacing:.02em;
  box-shadow:0 0 0 1px rgba(31,211,165,.32),0 10px 26px rgba(31,211,165,.2);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{color:var(--text-0);font-size:16.5px;font-weight:700;letter-spacing:.01em}
.logo-text span{font-size:11px;color:var(--text-2);letter-spacing:.16em;text-transform:uppercase}

.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{
  position:relative;padding:9px 15px;font-size:14.5px;color:var(--text-1);
  border-radius:999px;transition:color .18s ease,background .18s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:15px;right:15px;bottom:3px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.main-nav a:hover{color:var(--text-0)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--brand);background:var(--brand-soft)}
.main-nav a.active::after{transform:scaleX(1)}

.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--text-1);
  transition:border-color .2s,color .2s,background .2s;
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}
.icon-btn svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line-strong);place-items:center;gap:0}
.nav-toggle span{display:block;width:17px;height:1.6px;background:var(--text-0);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.nav-toggle span+span{margin-top:4.5px}
.nav-toggle.open span:nth-child(1){transform:translateY(6.1px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-6.1px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:var(--brand);color:#04150F;box-shadow:0 10px 30px rgba(31,211,165,.22)}
.btn-primary:hover{background:#27E5B5;transform:translateY(-1px);box-shadow:0 15px 40px rgba(31,211,165,.32)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--text-0);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}
.btn-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);transition:gap .2s ease,color .2s}
.btn-link:hover{gap:10px;color:#3AEBC0}

/* ---------- shared ---------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-sm{padding:56px 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--brand);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.75}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:40px}
.section-head h2{font-size:clamp(26px,3.5vw,36px);line-height:1.25}
.section-head p{margin-top:12px;max-width:640px;color:var(--text-2);font-size:15px}
.lead{color:var(--text-2);font-size:15.5px;line-height:1.85}

.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;position:relative;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(31,211,165,.42);box-shadow:var(--shadow-hover)}
.card-media{position:relative;overflow:hidden;background:var(--bg-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .55s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px 22px 22px}
.card-body h3{font-size:18px;line-height:1.45;font-weight:650;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{
  margin-top:9px;font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.meta-row{display:flex;align-items:center;gap:10px;margin-top:14px;font-size:12.5px;color:var(--text-2);flex-wrap:wrap}
.badge{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:999px;
  font-size:12px;letter-spacing:.02em;background:var(--brand-soft);color:var(--brand);
}
.badge-warm{background:rgba(255,138,76,.14);color:var(--brand-2)}
.badge-line{background:transparent;border:1px solid var(--line-strong);color:var(--text-2)}
.dot-sep{width:3px;height:3px;border-radius:50%;background:var(--text-2);opacity:.6}

.grain::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.16;
  background-image:radial-gradient(rgba(255,255,255,.5) .5px,transparent .5px);
  background-size:3px 3px;
}

/* ---------- hero ---------- */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;padding:150px 0 96px;overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-2;background-image:url(/assets/images/backpic/back-1.webp);background-size:cover;background-position:center;transform:scale(1.03)}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(11,13,15,.97) 0%,rgba(11,13,15,.9) 34%,rgba(11,13,15,.58) 66%,rgba(11,13,15,.86) 100%);
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:180px;z-index:-1;
  background:linear-gradient(180deg,transparent,var(--bg-0));
}
.hero-inner{max-width:760px}
.hero h1{font-size:clamp(32px,5vw,56px);line-height:1.15;font-weight:700;margin-top:22px;letter-spacing:-.01em}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero-sub{margin-top:22px;font-size:17px;line-height:1.8;color:var(--text-1);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px}
.chip{
  display:inline-flex;align-items:center;gap:7px;height:38px;padding:0 17px;border-radius:999px;
  border:1px solid var(--line-strong);font-size:13.5px;color:var(--text-1);
  background:rgba(255,255,255,.02);
  transition:border-color .2s ease,color .2s ease,background .2s ease,transform .2s ease;
}
.chip:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);transform:translateY(-2px)}
.chip i{width:5px;height:5px;border-radius:50%;background:var(--brand);display:block}

.hero-facts{display:flex;gap:44px;margin-top:52px;padding-top:28px;border-top:1px solid var(--line);flex-wrap:wrap}
.hero-facts div b{display:block;font-size:26px;color:var(--text-0);font-weight:700;line-height:1.2}
.hero-facts div span{font-size:13px;color:var(--text-2);letter-spacing:.02em}

/* ---------- rail ---------- */
.rail-shell{position:relative}
.rail{
  display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 24px 30px;scrollbar-width:none;-ms-overflow-style:none;
}
@media (min-width:1200px){.rail{padding-left:32px;padding-right:32px}}
.rail::-webkit-scrollbar{display:none}
.rail-item{flex:0 0 316px;scroll-snap-align:start}
.rail-shell::before,.rail-shell::after{
  content:"";position:absolute;top:0;bottom:30px;width:70px;pointer-events:none;z-index:3;
}
.rail-shell::before{left:0;background:linear-gradient(90deg,var(--bg-0),rgba(11,13,15,0))}
.rail-shell::after{right:0;background:linear-gradient(270deg,var(--bg-0),rgba(11,13,15,0))}
.rail-nav{display:flex;gap:10px}
.rail-nav button{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--line-strong);
  color:var(--text-1);display:grid;place-items:center;
  transition:border-color .2s,color .2s,background .2s,transform .2s;
}
.rail-nav button:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);transform:translateY(-2px)}
.rail-nav svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

.rail-card .card-media{aspect-ratio:3/4}
.rail-card .card-body{padding:16px 18px 18px}
.rail-card .card-body h3{font-size:16.5px}

/* ---------- bento ---------- */
.bento{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:206px;gap:22px}
.bento-card{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--surface);transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease}
.bento-card:hover{transform:translateY(-4px);border-color:rgba(31,211,165,.42);box-shadow:var(--shadow-hover)}
.bento-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.bento-card:hover img{transform:scale(1.05)}
.bento-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,13,15,.06) 22%,rgba(11,13,15,.9) 100%)}
.bento-body{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:22px}
.bento-body h3{font-size:18px;line-height:1.4;font-weight:650;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.bento-body p{
  margin-top:8px;font-size:13.5px;color:var(--text-1);line-height:1.65;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.bento-body .meta-row{margin-top:12px}
.bento-card.feature{grid-column:1 / span 2;grid-row:1 / span 2}
.bento-card.feature .bento-body{padding:30px}
.bento-card.feature .bento-body h3{font-size:clamp(20px,2.4vw,27px);-webkit-line-clamp:3}
.bento-card.feature .bento-body p{font-size:14.5px;-webkit-line-clamp:3;max-width:520px}
.bento-card.tall-a{grid-column:3 / span 1;grid-row:1 / span 2}
.bento-card.tall-b{grid-column:4 / span 1;grid-row:1 / span 2}
.bento-card.wide-a{grid-column:1 / span 2;grid-row:3}
.bento-card.wide-b{grid-column:3 / span 2;grid-row:3}
.bento-card.wide-a .bento-body,.bento-card.wide-b .bento-body{padding:18px 22px}

/* ---------- list sections ---------- */
.lists-wrap{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start}
.lists-side{position:sticky;top:110px}
.lists-side h2{margin-top:18px;font-size:clamp(26px,3.4vw,34px);line-height:1.28}
.lists-side p{margin-top:16px;color:var(--text-2);font-size:15px;line-height:1.85}
.side-stats{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden;margin-top:26px}
.side-stats div{background:var(--bg-1);padding:16px 18px}
.side-stats b{display:block;font-size:21px;color:var(--text-0);font-weight:700}
.side-stats span{font-size:12.5px;color:var(--text-2)}

.list-group+.list-group{margin-top:34px}
.list-group-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:14px;border-bottom:1px solid var(--line-strong)}
.list-group-head h3{font-size:19px;font-weight:650}
.list-group-head span{font-size:12.5px;color:var(--text-2)}
.list-row{
  display:flex;align-items:center;gap:20px;padding:18px 6px;border-bottom:1px solid var(--line);
  transition:background .22s ease,padding .22s ease;
}
.list-row:hover{background:rgba(255,255,255,.025);padding-left:14px;padding-right:14px}
.list-row .rank{font-size:13px;color:var(--text-2);width:26px;flex:0 0 26px;font-variant-numeric:tabular-nums}
.list-row:hover .rank{color:var(--brand)}
.list-thumb{width:78px;height:52px;border-radius:10px;object-fit:cover;flex:0 0 78px;background:var(--bg-2)}
.list-main{flex:1 1 auto;min-width:0}
.list-main h4{font-size:15.5px;font-weight:600;color:var(--text-0);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color .2s}
.list-row:hover .list-main h4{color:var(--brand)}
.list-main p{margin-top:4px;font-size:13px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.list-arrow{color:var(--text-2);font-size:16px;flex:0 0 auto;transition:transform .22s ease,color .22s ease}
.list-row:hover .list-arrow{color:var(--brand);transform:translateX(4px)}

/* ---------- cms ---------- */
.cms-latest-list{display:grid;gap:16px}
.cms-item{
  display:flex;align-items:flex-start;gap:24px;padding:24px 26px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.cms-item:hover{transform:translateY(-3px);border-color:rgba(31,211,165,.42);box-shadow:var(--shadow)}
.cms-item-main{flex:1 1 auto;min-width:0}
.cms-item-main h3{font-size:17.5px;font-weight:650;line-height:1.5;transition:color .2s}
.cms-item:hover .cms-item-main h3{color:var(--brand)}
.cms-item-main p{margin-top:9px;font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-item-meta{display:flex;align-items:center;gap:12px;flex:0 0 auto;padding-top:4px;font-size:12.5px;color:var(--text-2)}
.cms-item-meta .arrow{color:var(--brand);font-size:16px;transition:transform .22s ease}
.cms-item:hover .cms-item-meta .arrow{transform:translateX(4px)}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  padding:64px 24px;border:1px dashed var(--line-strong);border-radius:var(--r-card);
  background:rgba(255,255,255,.014);text-align:center;
}
.empty-state .ico{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand)}
.empty-state .ico svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.empty-state b{color:var(--text-0);font-size:15.5px;font-weight:600}
.empty-state span{font-size:13.5px;color:var(--text-2)}

/* ---------- cta ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:24px;border:1px solid var(--line);isolation:isolate}
.cta-band-bg{position:absolute;inset:0;z-index:-2;background-image:url(/assets/images/backpic/back-3.webp);background-size:cover;background-position:center}
.cta-band::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(115deg,rgba(9,11,13,.94) 8%,rgba(9,11,13,.72) 55%,rgba(9,11,13,.9) 100%)}
.cta-inner{display:grid;grid-template-columns:1.25fr .95fr;gap:52px;padding:64px 56px;align-items:center}
.cta-inner h2{font-size:clamp(25px,3.2vw,34px);line-height:1.28;margin-top:18px}
.cta-inner p{margin-top:16px;color:var(--text-1);font-size:15.5px;line-height:1.85;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.subscribe{background:rgba(18,21,26,.72);border:1px solid var(--line-strong);border-radius:18px;padding:30px;backdrop-filter:blur(8px)}
.subscribe h3{font-size:17px;font-weight:650}
.subscribe p{margin-top:8px;font-size:13.5px;color:var(--text-2);line-height:1.7}
.field{margin-top:18px}
.field label{display:block;font-size:12.5px;color:var(--text-2);margin-bottom:8px;letter-spacing:.02em}
.field input{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-input);
  background:var(--bg-1);border:1px solid var(--line);color:var(--text-0);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:var(--text-2)}
.field input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--focus)}
.form-note{margin-top:12px;font-size:12px;color:var(--text-2);line-height:1.6}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:start}
.faq-wrap h2{margin-top:18px;font-size:clamp(26px,3.4vw,34px);line-height:1.28}
.faq-wrap .lead{margin-top:16px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;padding:22px 52px 22px 0;
  font-size:16.5px;font-weight:600;color:var(--text-0);line-height:1.6;
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:21px;font-weight:400;color:var(--brand);line-height:1;
}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::after{content:"–"}
.faq-item .faq-body{padding:0 52px 26px 0;color:var(--text-1);font-size:15px;line-height:1.85}

/* ---------- footer ---------- */
.site-footer{margin-top:96px;background:var(--bg-1);border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.4fr;gap:0;padding:68px 0 0}
.footer-col{padding:0 32px;border-left:1px solid var(--line)}
.footer-col:first-child{padding-left:0;border-left:0}
.footer-col:last-child{padding-right:0}
.footer-brand{display:inline-flex;align-items:center;gap:11px}
.footer-brand b{color:var(--text-0);font-size:16px;font-weight:700}
.footer-col p{margin-top:16px;font-size:13.5px;color:var(--text-2);line-height:1.85;max-width:340px}
.footer-col h4{font-size:14px;font-weight:650;color:var(--text-0);letter-spacing:.02em}
.footer-links{margin-top:18px;display:grid;gap:11px}
.footer-links a{font-size:13.5px;color:var(--text-2);transition:color .2s ease}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:24px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.footer-bottom p{font-size:12.5px;color:var(--text-2);line-height:1.6}
.footer-bottom .meta-links{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom .meta-links a{font-size:12.5px;color:var(--text-2);transition:color .2s}
.footer-bottom .meta-links a:hover{color:var(--brand)}
.to-top{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--text-2);transition:color .2s}
.to-top:hover{color:var(--brand)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .lists-wrap,.faq-wrap{grid-template-columns:300px 1fr;gap:40px}
  .cta-inner{padding:52px 40px;gap:40px}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:0}
  .footer-col:nth-child(4){grid-column:1 / -1;margin-top:40px;padding:36px 0 0;border-left:0;border-top:1px solid var(--line)}
}
@media (max-width:992px){
  .main-nav{
    position:fixed;top:78px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    padding:14px 24px 26px;
    background:rgba(11,13,15,.97);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    transform:translateY(-14px);opacity:0;pointer-events:none;
    transition:opacity .26s ease,transform .26s ease;
    max-height:calc(100vh - 78px);overflow-y:auto;
  }
  .main-nav.open{opacity:1;transform:none;pointer-events:auto}
  .main-nav a{padding:14px 14px;border-radius:12px;font-size:15px}
  .main-nav a::after{display:none}
  .main-nav a.active::before{
    content:"";display:inline-block;width:8px;height:8px;border-radius:50%;
    background:var(--brand);margin-right:10px;vertical-align:middle;
  }
  .nav-toggle{display:grid}
  .section{padding:76px 0}
  .section-tight{padding:60px 0}
  .hero{min-height:auto;padding:132px 0 76px}
  .bento{grid-template-columns:repeat(2,1fr);grid-auto-rows:200px}
  .bento-card.feature{grid-column:1 / span 2;grid-row:1 / span 2}
  .bento-card.tall-a{grid-column:1 / span 1;grid-row:3 / span 2}
  .bento-card.tall-b{grid-column:2 / span 1;grid-row:3 / span 2}
  .bento-card.wide-a{grid-column:1 / span 2;grid-row:5}
  .bento-card.wide-b{grid-column:1 / span 2;grid-row:6}
  .lists-wrap,.faq-wrap{grid-template-columns:1fr;gap:32px}
  .lists-side{position:static}
  .cta-inner{grid-template-columns:1fr;padding:44px 32px}
  .section-head{flex-direction:column;align-items:flex-start;gap:18px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-col{padding:0 24px}
  .footer-col:nth-child(odd){padding-left:0;border-left:0}
  .footer-col:nth-child(4){padding-left:0}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .hero{padding:118px 0 64px}
  .hero h1{font-size:clamp(30px,7.4vw,42px)}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{flex:1 1 auto}
  .hero-facts{gap:28px;margin-top:38px}
  .hero-facts div b{font-size:22px}
  .section{padding:62px 0}
  .section-tight{padding:50px 0}
  .rail{padding-left:20px;padding-right:20px}
  .rail-item{flex:0 0 264px}
  .rail-shell::before,.rail-shell::after{width:40px}
  .bento{gap:16px;grid-auto-rows:172px}
  .cms-item{flex-direction:column;gap:16px;padding:20px}
  .cms-item-meta{padding-top:0}
  .list-row{gap:14px;padding:16px 2px}
  .list-thumb{width:62px;height:44px;flex:0 0 62px}
  .list-main h4{font-size:14.5px}
  .cta-inner{padding:34px 22px;border-radius:18px}
  .subscribe{padding:22px}
  .footer-grid{grid-template-columns:1fr;padding-top:52px}
  .footer-col{padding:26px 0 0;border-left:0;border-top:1px solid var(--line)}
  .footer-col:first-child{padding-top:0;border-top:0}
  .footer-col:nth-child(4){margin-top:0;padding:26px 0 0}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .nav-wrap{height:70px}
  .main-nav{top:70px}
  .logo-text span{display:none}
  .hero-chips{gap:8px}
  .chip{height:34px;padding:0 14px;font-size:12.5px}
  .btn{height:46px;padding:0 20px;font-size:14.5px}
  .btn-block-sm{width:100%}
  .bento{grid-template-columns:1fr;grid-auto-rows:196px}
  .bento-card.feature{grid-column:1;grid-row:1 / span 2}
  .bento-card.tall-a{grid-column:1;grid-row:3}
  .bento-card.tall-b{grid-column:1;grid-row:4}
  .bento-card.wide-a{grid-column:1;grid-row:5}
  .bento-card.wide-b{grid-column:1;grid-row:6}
  .section-head h2{font-size:24px}
  .faq-item summary{font-size:15.5px;padding-right:42px}
  .faq-item .faq-body{padding-right:24px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
    --bg-0:#0B0D0F;
    --bg-1:#12151A;
    --bg-2:#1A1F26;
    --surface:#1D232B;
    --line:rgba(255,255,255,.08);
    --line-strong:rgba(255,255,255,.16);
    --text-0:#F4F7F2;
    --text-1:#C3CBC5;
    --text-2:#8A938C;
    --brand:#1FD3A5;
    --brand-2:#FF8A4C;
    --brand-soft:rgba(31,211,165,.14);
    --focus:rgba(31,211,165,.32);
    --danger:#FF5C5C;
    --success:#1FD3A5;
    --radius-card:18px;
    --radius-img:14px;
    --radius-btn:999px;
    --shadow:0 20px 60px rgba(0,0,0,.45);
    --shadow-hover:0 28px 80px rgba(0,0,0,.55);
    --maxw:1320px;
    --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
    margin:0;
    background:var(--bg-0);
    color:var(--text-1);
    font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.75;
    font-variant-numeric:tabular-nums;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
}
body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    opacity:.035;
    background-image:radial-gradient(rgba(255,255,255,.9) 1px,transparent 1px);
    background-size:4px 4px;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text-0);font-weight:700;letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;}
::selection{background:var(--brand-soft);color:var(--text-0);}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:6px;}

.container{
    width:100%;
    max-width:var(--maxw);
    margin:0 auto;
    padding:0 24px;
    position:relative;
    z-index:1;
}
.section{padding:96px 0;}
.section-sm{padding:72px 0;}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ============ HEADER / NAV ============ */
.site-header{
    position:fixed;
    top:0;left:0;right:0;
    z-index:120;
    border-bottom:1px solid transparent;
    transition:background .28s var(--ease),border-color .28s var(--ease),backdrop-filter .28s var(--ease);
}
.site-header.is-scrolled{
    background:rgba(11,13,15,.88);
    border-bottom-color:var(--line);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
}
.nav-wrap{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px;
    min-height:78px;
}
.logo{
    display:inline-flex;
    align-items:center;
    gap:12px;
    flex-shrink:0;
}
.logo-mark{
    width:40px;height:40px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    border-radius:13px;
    background:linear-gradient(140deg,var(--brand),#0F9E7B);
    color:#06110D;
    font-weight:800;
    font-size:15px;
    letter-spacing:.02em;
    box-shadow:0 0 0 1px rgba(31,211,165,.28),0 10px 28px rgba(31,211,165,.18);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{color:var(--text-0);font-size:16px;font-weight:700;letter-spacing:.01em;}
.logo-text span{color:var(--text-2);font-size:11px;letter-spacing:.16em;text-transform:uppercase;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
    position:relative;
    padding:10px 14px;
    font-size:15px;
    color:var(--text-1);
    border-radius:999px;
    transition:color .18s var(--ease),background .18s var(--ease);
    white-space:nowrap;
}
.main-nav a::after{
    content:"";
    position:absolute;
    left:14px;right:14px;bottom:4px;
    height:2px;
    border-radius:2px;
    background:var(--brand);
    transform:scaleX(0);
    transform-origin:50% 50%;
    transition:transform .18s var(--ease);
}
.main-nav a:hover{color:var(--text-0);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{
    color:var(--text-0);
    background:var(--brand-soft);
}
.main-nav a.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
    width:42px;height:42px;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:999px;
    border:1px solid var(--line);
    color:var(--text-1);
    transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;}
.icon-btn:hover{color:var(--brand);border-color:var(--line-strong);background:rgba(255,255,255,.04);}
.nav-toggle{
    display:none;
    width:42px;height:42px;
    border-radius:12px;
    border:1px solid var(--line);
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text-1);transition:transform .2s var(--ease),opacity .2s var(--ease);}

/* ============ BUTTONS ============ */
.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:46px;
    padding:0 22px;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:600;
    letter-spacing:.01em;
    transition:transform .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
    white-space:nowrap;
}
.btn-primary{
    background:var(--brand);
    color:#06110D;
    box-shadow:0 10px 30px rgba(31,211,165,.22);
}
.btn-primary:hover{background:#2EDFB3;transform:translateY(-1px);box-shadow:0 14px 38px rgba(31,211,165,.3);}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 18px rgba(31,211,165,.2);}
.btn-ghost{
    background:transparent;
    border:1px solid var(--line-strong);
    color:var(--text-0);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-text{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--brand);font-weight:600;font-size:15px;
    transition:gap .2s var(--ease),color .2s var(--ease);
}
.btn-text:hover{gap:10px;color:#2EDFB3;}

/* ============ CHIP / BADGE ============ */
.chip{
    display:inline-flex;align-items:center;gap:6px;
    height:26px;padding:0 12px;
    border-radius:999px;
    font-size:12px;line-height:1;
    letter-spacing:.02em;
    border:1px solid var(--line);
    color:var(--text-2);
    background:rgba(255,255,255,.03);
}
.chip-brand{background:var(--brand-soft);border-color:rgba(31,211,165,.28);color:var(--brand);}
.chip-warm{background:rgba(255,138,76,.14);border-color:rgba(255,138,76,.28);color:var(--brand-2);}

/* ============ ARTICLE HERO ============ */
.article-hero{
    position:relative;
    padding:150px 0 64px;
    background-image:linear-gradient(180deg,rgba(11,13,15,.72) 0%,rgba(11,13,15,.86) 58%,var(--bg-0) 100%),url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center 30%;
    border-bottom:1px solid var(--line);
}
.article-hero::after{
    content:"";
    position:absolute;left:0;right:0;bottom:0;height:120px;
    background:linear-gradient(180deg,transparent,var(--bg-0));
    pointer-events:none;
}
.breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px;
    font-size:13px;
    color:var(--text-2);
    margin-bottom:22px;
    position:relative;
    z-index:2;
}
.breadcrumb a{color:var(--text-2);transition:color .18s var(--ease);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:rgba(255,255,255,.2);}
.breadcrumb .current{color:var(--text-0);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.article-hero h1{
    font-size:clamp(32px,5vw,56px);
    line-height:1.15;
    font-weight:700;
    margin:18px 0 22px;
    max-width:1000px;
    position:relative;
    z-index:2;
}
.meta-row{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:14px;
    font-size:13px;
    color:var(--text-2);
    position:relative;
    z-index:2;
}
.meta-row b{color:var(--text-1);font-weight:600;}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.24);}
.meta-row .live{color:var(--success);display:inline-flex;align-items:center;gap:6px;}
.meta-row .live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--success);box-shadow:0 0 10px rgba(31,211,165,.9);}

/* ============ ARTICLE LAYOUT ============ */
.article-layout{
    display:grid;
    grid-template-columns:minmax(0,1fr) 300px;
    gap:56px;
    align-items:start;
    padding:72px 24px 24px;
}
.article-main{min-width:0;max-width:820px;}
.feature-figure{margin:0 0 32px;}
.feature-figure img{
    width:100%;
    aspect-ratio:16/9;
    object-fit:cover;
    border-radius:var(--radius-img);
    border:1px solid var(--line);
}
.feature-figure figcaption{font-size:13px;color:var(--text-2);margin-top:10px;}

.cms-article-body{
    font-size:17px;
    line-height:1.9;
    color:var(--text-1);
}
.cms-article-body > * + *{margin-top:22px;}
.cms-article-body h2{
    position:relative;
    font-size:clamp(22px,2.4vw,28px);
    line-height:1.35;
    font-weight:700;
    color:var(--text-0);
    padding-left:16px;
    margin-top:48px;
}
.cms-article-body h2::before{
    content:"";
    position:absolute;left:0;top:.22em;bottom:.22em;
    width:3px;border-radius:3px;
    background:linear-gradient(180deg,var(--brand),rgba(31,211,165,.25));
}
.cms-article-body h3{
    font-size:20px;
    font-weight:700;
    color:var(--text-0);
    margin-top:36px;
}
.cms-article-body h4{font-size:17px;color:var(--text-0);margin-top:28px;}
.cms-article-body p{margin:0;}
.cms-article-body a{color:var(--brand);border-bottom:1px solid rgba(31,211,165,.35);transition:border-color .2s var(--ease),color .2s var(--ease);}
.cms-article-body a:hover{color:#2EDFB3;border-bottom-color:#2EDFB3;}
.cms-article-body strong{color:var(--text-0);font-weight:700;}
.cms-article-body ul,.cms-article-body ol{padding-left:22px;}
.cms-article-body li{margin:8px 0;}
.cms-article-body li::marker{color:var(--brand);}
.cms-article-body blockquote{
    margin:28px 0;
    padding:16px 20px;
    border-left:3px solid var(--brand-2);
    background:rgba(255,138,76,.06);
    border-radius:0 var(--radius-img) var(--radius-img) 0;
    color:var(--text-1);
    font-style:normal;
}
.cms-article-body img{
    border-radius:var(--radius-img);
    border:1px solid var(--line);
    margin:8px 0;
}
.cms-article-body figure figcaption{font-size:13px;color:var(--text-2);margin-top:10px;text-align:center;}
.cms-article-body table{
    width:100%;
    border-collapse:collapse;
    font-size:15px;
    background:var(--bg-1);
    border:1px solid var(--line);
    border-radius:var(--radius-img);
    overflow:hidden;
    display:block;
}
.cms-article-body th,.cms-article-body td{
    padding:12px 16px;
    border-bottom:1px solid var(--line);
    text-align:left;
}
.cms-article-body th{background:rgba(255,255,255,.04);color:var(--text-0);font-weight:600;}
.cms-article-body code{
    background:rgba(255,255,255,.06);
    border:1px solid var(--line);
    border-radius:6px;
    padding:2px 6px;
    font-size:14px;
    color:var(--brand);
}
.cms-article-body pre{
    background:var(--bg-1);
    border:1px solid var(--line);
    border-radius:var(--radius-img);
    padding:18px;
    overflow:auto;
    font-size:14px;
    line-height:1.7;
}
.cms-article-body pre code{background:none;border:0;padding:0;color:var(--text-1);}
.cms-article-body hr{border:0;height:1px;background:var(--line);margin:36px 0;}

.empty-state{
    border:1px dashed var(--line-strong);
    border-radius:var(--radius-card);
    padding:48px 28px;
    text-align:center;
    background:var(--bg-1);
}
.empty-state h2{font-size:22px;color:var(--text-0);margin-bottom:12px;}
.empty-state p{color:var(--text-2);margin-bottom:22px;}

.article-actions{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:18px;
    margin-top:44px;
    padding-top:26px;
    border-top:1px solid var(--line);
}

/* ============ TOC ============ */
.toc{
    position:sticky;
    top:104px;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    background:var(--surface);
    padding:22px;
    box-shadow:var(--shadow);
}
.toc h3{font-size:13px;letter-spacing:.14em;color:var(--text-2);font-weight:600;text-transform:uppercase;margin-bottom:14px;}
.toc ol{list-style:none;padding:0;counter-reset:toc;}
.toc li{counter-increment:toc;}
.toc a{
    display:flex;
    align-items:center;
    gap:10px;
    padding:9px 0;
    font-size:14px;
    color:var(--text-1);
    border-bottom:1px solid var(--line);
    transition:color .18s var(--ease),padding-left .18s var(--ease);
}
.toc li:last-child a{border-bottom:0;}
.toc a::before{
    content:counter(toc,decimal-leading-zero);
    font-size:11px;
    color:var(--text-2);
    min-width:20px;
}
.toc a:hover{color:var(--brand);padding-left:4px;}
.toc-note{
    margin-top:16px;
    font-size:12px;
    line-height:1.7;
    color:var(--text-2);
    border-top:1px solid var(--line);
    padding-top:14px;
}

/* ============ SECTION HEAD ============ */
.section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:24px;
    margin-bottom:34px;
}
.section-head h2{
    font-size:clamp(26px,3.5vw,36px);
    line-height:1.25;
}
.section-head p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:640px;}
.section-eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:12px;letter-spacing:.16em;text-transform:uppercase;
    color:var(--brand);margin-bottom:12px;
}
.section-eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);}

/* ============ ROW LIST ============ */
.row-list{display:grid;gap:14px;}
.row-item{
    display:grid;
    grid-template-columns:140px minmax(0,1fr) auto;
    gap:20px;
    align-items:center;
    padding:14px;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    background:var(--surface);
    transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.row-item:hover{transform:translateY(-4px);border-color:rgba(31,211,165,.4);box-shadow:var(--shadow-hover);}
.row-item img{
    width:140px;height:88px;
    object-fit:cover;
    border-radius:12px;
}
.row-body h3{font-size:17px;font-weight:600;line-height:1.45;color:var(--text-0);}
.row-body p{font-size:14px;color:var(--text-2);margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.row-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px;font-size:12px;color:var(--text-2);}
.row-arrow{
    width:38px;height:38px;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:999px;
    border:1px solid var(--line);
    color:var(--text-2);
    transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.row-item:hover .row-arrow{color:var(--brand);border-color:var(--brand);background:var(--brand-soft);}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
    width:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    padding:24px 0;
    text-align:left;
    font-size:17px;
    font-weight:600;
    color:var(--text-0);
    transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--brand);}
.faq-item.is-open .faq-q{color:var(--brand);}
.faq-icon{
    flex-shrink:0;
    width:24px;height:24px;
    position:relative;
    border-radius:50%;
    border:1px solid var(--line-strong);
    transition:border-color .2s var(--ease),background .2s var(--ease);
}
.faq-icon::before,.faq-icon::after{
    content:"";
    position:absolute;
    left:50%;top:50%;
    background:var(--text-1);
    transform:translate(-50%,-50%);
    transition:transform .22s var(--ease),background .2s var(--ease);
}
.faq-icon::before{width:10px;height:1.5px;}
.faq-icon::after{width:1.5px;height:10px;}
.faq-item.is-open .faq-icon{border-color:var(--brand);background:var(--brand-soft);}
.faq-item.is-open .faq-icon::before{background:var(--brand);}
.faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);background:var(--brand);}
.faq-a{
    max-height:0;
    overflow:hidden;
    transition:max-height .3s var(--ease);
}
.faq-a-inner{
    padding:0 0 26px;
    max-width:820px;
    color:var(--text-1);
    font-size:15px;
    line-height:1.85;
}

/* ============ CTA / SUBSCRIBE ============ */
.cta-band{
    position:relative;
    padding:88px 0;
    background-image:linear-gradient(180deg,rgba(11,13,15,.86),rgba(11,13,15,.94)),url('/assets/images/backpic/back-3.webp');
    background-size:cover;
    background-position:center;
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    overflow:hidden;
}
.cta-band::before{
    content:"";
    position:absolute;
    width:520px;height:520px;
    right:-140px;top:-160px;
    border-radius:50%;
    background:radial-gradient(circle,rgba(31,211,165,.18),transparent 68%);
    pointer-events:none;
}
.cta-inner{
    display:grid;
    grid-template-columns:minmax(0,1fr) minmax(0,420px);
    gap:48px;
    align-items:center;
    position:relative;
    z-index:1;
}
.cta-inner h2{font-size:clamp(26px,3.5vw,36px);line-height:1.25;margin-bottom:14px;}
.cta-inner p{color:var(--text-1);font-size:16px;max-width:520px;}
.subscribe-form{display:flex;gap:12px;margin-top:20px;flex-wrap:wrap;}
.subscribe-form input{
    flex:1 1 200px;
    height:48px;
    padding:0 18px;
    border-radius:12px;
    background:var(--bg-1);
    border:1px solid var(--line);
    color:var(--text-0);
    font-size:15px;
    transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.subscribe-form input::placeholder{color:var(--text-2);}
.subscribe-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--focus);}
.form-hint{font-size:12px;color:var(--text-2);margin-top:12px;}

/* ============ FOOTER ============ */
.site-footer{
    background:var(--bg-1);
    border-top:1px solid var(--line);
    padding:72px 0 0;
    margin-top:0;
}
.footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1.2fr;
    gap:0;
}
.footer-col{padding:0 28px;border-left:1px solid var(--line);}
.footer-col:first-child{padding-left:0;border-left:0;}
.footer-col:last-child{padding-right:0;}
.footer-brand{display:inline-flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand b{color:var(--text-0);font-size:16px;}
.footer-col p{font-size:14px;line-height:1.8;color:var(--text-2);}
.footer-col h4{
    font-size:13px;
    letter-spacing:.14em;
    text-transform:uppercase;
    color:var(--text-2);
    font-weight:600;
    margin-bottom:18px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{font-size:14px;color:var(--text-1);transition:color .18s var(--ease),transform .18s var(--ease);}
.footer-links a:hover{color:var(--brand);transform:translateX(3px);}
.footer-bottom{
    margin-top:56px;
    border-top:1px solid var(--line);
    padding:24px 0;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-2);}
.meta-links{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}
.meta-links a{font-size:13px;color:var(--text-2);transition:color .18s var(--ease);}
.meta-links a:hover{color:var(--brand);}
.to-top{display:inline-flex;align-items:center;gap:6px;}

/* ============ RESPONSIVE ============ */
@media (max-width:1200px){
    .article-layout{grid-template-columns:minmax(0,1fr) 260px;gap:40px;}
    .footer-grid{grid-template-columns:1.4fr 1fr 1fr;}
    .footer-col{padding:0 20px;}
    .footer-col:nth-child(4){padding-left:0;border-left:0;margin-top:36px;grid-column:1/-1;border-top:1px solid var(--line);padding-top:32px;}
}
@media (max-width:992px){
    .main-nav{
        position:fixed;
        top:78px;left:16px;right:16px;
        flex-direction:column;
        align-items:stretch;
        gap:4px;
        padding:14px;
        background:rgba(18,21,26,.98);
        border:1px solid var(--line);
        border-radius:var(--radius-card);
        box-shadow:var(--shadow);
        opacity:0;
        visibility:hidden;
        transform:translateY(-10px);
        transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
        backdrop-filter:blur(12px);
    }
    .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0);}
    .main-nav a{padding:13px 16px;font-size:15px;border-radius:12px;display:flex;align-items:center;gap:10px;}
    .main-nav a::after{display:none;}
    .main-nav a.active::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px rgba(31,211,165,.8);}
    .nav-toggle{display:flex;}
    .article-layout{grid-template-columns:minmax(0,1fr);gap:0;padding-top:56px;}
    .article-main{max-width:100%;}
    .toc{position:static;margin-top:48px;}
    .cta-inner{grid-template-columns:minmax(0,1fr);gap:32px;}
    .section{padding:72px 0;}
}
@media (max-width:768px){
    .article-hero{padding:126px 0 48px;}
    .article-hero h1{font-size:clamp(28px,7vw,36px);}
    .breadcrumb .current{max-width:180px;}
    .cms-article-body{font-size:16px;line-height:1.85;}
    .row-item{grid-template-columns:110px minmax(0,1fr);gap:14px;}
    .row-item img{width:110px;height:74px;}
    .row-arrow{display:none;}
    .footer-grid{grid-template-columns:1fr 1fr;}
    .footer-col{padding:0 18px;border-left:1px solid var(--line);}
    .footer-col:nth-child(odd){padding-left:0;border-left:0;}
    .footer-col:nth-child(n+3){margin-top:32px;border-top:1px solid var(--line);padding-top:28px;}
    .footer-col:nth-child(4){margin-top:32px;}
    .section{padding:56px 0;}
    .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
}
@media (max-width:520px){
    .container{padding:0 18px;}
    .article-layout{padding:40px 18px 0;}
    .logo-text span{display:none;}
    .row-item{grid-template-columns:1fr;padding:16px;}
    .row-item img{width:100%;height:170px;}
    .subscribe-form{flex-direction:column;}
    .subscribe-form .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;}
    .footer-col{padding:0;border-left:0;}
    .footer-col + .footer-col{margin-top:28px;border-top:1px solid var(--line);padding-top:26px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .btn{width:100%;}
    .article-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --bg-0:#0B0D0F;
  --bg-1:#12151A;
  --bg-2:#1A1F26;
  --surface:#1D232B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text-0:#F4F7F2;
  --text-1:#C3CBC5;
  --text-2:#8A938C;
  --brand:#1FD3A5;
  --brand-2:#FF8A4C;
  --brand-soft:rgba(31,211,165,.14);
  --brand-2-soft:rgba(255,138,76,.14);
  --focus:rgba(31,211,165,.32);
  --danger:#FF5C5C;
  --success:#1FD3A5;
  --radius-card:18px;
  --radius-img:14px;
  --radius-input:12px;
  --shadow-1:0 20px 60px rgba(0,0,0,.45);
  --shadow-2:0 28px 80px rgba(0,0,0,.55);
  --maxw:1320px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-0);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:1;
  background-image:radial-gradient(rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:3px 3px;
  opacity:.5;
}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text-0);letter-spacing:0;}
h1{font-size:clamp(32px,5vw,56px);line-height:1.15;}
h2{font-size:clamp(26px,3.5vw,36px);line-height:1.25;}
h3{font-size:23px;line-height:1.35;font-weight:600;}
h4{font-size:17px;line-height:1.4;font-weight:700;}
p{margin:0 0 14px;color:var(--text-1);}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:6px;}

/* ---------- 容器 ---------- */
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 24px;
  position:relative;
  z-index:2;
}
@media (min-width:1200px){ .container{padding:0 32px;} }

.section{padding:96px 0;}
.section.tight{padding:72px 0;}
.section.slim{padding:56px 0;}

.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:36px;
  flex-wrap:wrap;
}
.section-head .lead{max-width:640px;}
.section-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brand);
  margin-bottom:14px;
}
.section-head .eyebrow::before{
  content:"";
  width:22px;height:1px;background:var(--brand);display:inline-block;
}
.section-head p{margin-top:12px;font-size:15px;color:var(--text-2);max-width:640px;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,backdrop-filter .28s ease;
}
.site-header.is-scrolled{
  background:rgba(11,13,15,.88);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:76px;
}
.logo{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.logo-mark{
  width:38px;height:38px;
  border-radius:11px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  font-weight:700;
  letter-spacing:.03em;
  color:#06231C;
  background:linear-gradient(140deg,var(--brand),#12B08A);
  box-shadow:0 0 0 1px rgba(31,211,165,.35),0 10px 26px rgba(31,211,165,.18);
  flex-shrink:0;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{font-size:16px;font-weight:700;color:var(--text-0);letter-spacing:.01em;}
.logo-text span{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--text-2);}

.main-nav{
  display:flex;
  align-items:center;
  gap:6px;
  margin-left:auto;
}
.main-nav a{
  position:relative;
  font-size:15px;
  color:var(--text-1);
  padding:10px 14px;
  border-radius:999px;
  transition:color .18s ease,background .18s ease;
  white-space:nowrap;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;
  bottom:5px;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s ease;
  border-radius:2px;
}
.main-nav a:hover{color:var(--text-0);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{
  color:var(--brand);
  background:var(--brand-soft);
}
.main-nav a.active::after{transform:scaleX(1);}

.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:42px;height:42px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:transparent;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--text-1);
  transition:color .18s ease,border-color .18s ease,transform .18s ease;
}
.icon-btn svg{
  width:18px;height:18px;
  fill:none;stroke:currentColor;stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round;
}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-1px);}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line-strong);
  background:transparent;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.nav-toggle span{
  display:block;
  width:18px;height:1.6px;
  background:var(--text-0);
  border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6.6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:47px;
  padding:0 22px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--brand);
  color:#06231C;
  box-shadow:0 10px 28px rgba(31,211,165,.16);
}
.btn-primary:hover{
  background:#2BE0B2;
  transform:translateY(-1px);
  box-shadow:0 14px 36px rgba(31,211,165,.28);
}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 18px rgba(31,211,165,.18);}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text-0);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
  background:none;border:none;padding:0;
}
.btn-text span{transition:transform .18s ease;}
.btn-text:hover span{transform:translateX(4px);}
.btn[disabled]{opacity:.45;cursor:not-allowed;}

/* ---------- 标签 / 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  line-height:1;
  letter-spacing:.02em;
  padding:6px 11px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand);
  border:1px solid rgba(31,211,165,.22);
}
.badge.warm{background:var(--brand-2-soft);color:var(--brand-2);border-color:rgba(255,138,76,.24);}
.badge.plain{background:rgba(255,255,255,.05);color:var(--text-1);border-color:var(--line);}
.meta{font-size:13px;color:var(--text-2);display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-2);display:inline-block;}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:22px;
  flex-wrap:wrap;
}
.breadcrumb a{color:var(--text-2);transition:color .18s ease;}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{width:14px;height:1px;background:var(--line-strong);display:inline-block;}
.breadcrumb .current{color:var(--text-0);}

/* ---------- 频道头图 ---------- */
.channel-hero{
  position:relative;
  padding:158px 0 68px;
  background-image:
    linear-gradient(100deg,rgba(11,13,15,.96) 0%,rgba(11,13,15,.82) 42%,rgba(11,13,15,.48) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.channel-hero::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:170px;
  background:linear-gradient(to top,var(--bg-0),rgba(11,13,15,0));
  pointer-events:none;
}
.channel-hero .container{position:relative;z-index:2;}
.channel-hero h1{margin-bottom:18px;max-width:18em;}
.channel-hero h1 em{
  font-style:normal;
  color:var(--brand);
}
.channel-hero .lead{
  font-size:clamp(16px,1.6vw,19px);
  color:var(--text-1);
  max-width:660px;
  line-height:1.8;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px;}
.hero-chips{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px;}

/* ---------- 数据条 ---------- */
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  margin-top:-38px;
  position:relative;
  z-index:3;
}
.stat{
  background:var(--bg-1);
  padding:26px 24px;
  transition:background .2s ease;
}
.stat:hover{background:var(--bg-2);}
.stat b{
  display:block;
  font-size:clamp(24px,2.6vw,32px);
  font-weight:700;
  color:var(--text-0);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.stat b i{font-style:normal;color:var(--brand);font-size:15px;margin-left:4px;font-weight:600;}
.stat span{display:block;font-size:13px;color:var(--text-2);margin-top:8px;}

/* ---------- 筛选 chips ---------- */
.filter-bar{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  padding:18px 0 0;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  height:38px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--text-1);
  font-size:14px;
  transition:color .18s ease,border-color .18s ease,background .18s ease;
}
.chip:hover{color:var(--text-0);border-color:var(--brand);}
.chip.is-active{
  background:var(--brand-soft);
  border-color:rgba(31,211,165,.45);
  color:var(--brand);
}
.chip i{
  font-style:normal;
  font-size:12px;
  color:var(--text-2);
  font-variant-numeric:tabular-nums;
}
.chip.is-active i{color:var(--brand);}

/* ---------- 横滑片库 ---------- */
.rail-wrap{position:relative;}
.rail{
  display:flex;
  gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:6px 2px 22px;
  scrollbar-width:thin;
  scrollbar-color:rgba(255,255,255,.18) transparent;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:99px;}
.rail::-webkit-scrollbar-track{background:transparent;}
.rail-card{
  flex:0 0 300px;
  scroll-snap-align:start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.rail-card:hover{
  transform:translateY(-4px);
  border-color:rgba(31,211,165,.42);
  box-shadow:var(--shadow-2);
}
.rail-card .thumb{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  background:var(--bg-2);
}
.rail-card .thumb img{
  width:100%;height:100%;
  object-fit:cover;
  border-radius:0;
  transition:transform .4s ease;
}
.rail-card:hover .thumb img{transform:scale(1.04);}
.rail-card .thumb .tag{
  position:absolute;
  left:12px;top:12px;
  font-size:12px;
  line-height:1;
  padding:6px 10px;
  border-radius:999px;
  background:rgba(11,13,15,.78);
  color:var(--brand);
  border:1px solid rgba(31,211,165,.3);
  backdrop-filter:blur(6px);
}
.rail-card .body{padding:18px 18px 20px;}
.rail-card h3{font-size:17px;line-height:1.4;margin-bottom:8px;}
.rail-card p{font-size:14px;color:var(--text-2);line-height:1.7;margin-bottom:14px;}
.rail-card .meta{border-top:1px solid var(--line);padding-top:12px;}

.rail-nav{
  display:flex;
  gap:8px;
  align-items:center;
}
.rail-btn{
  width:40px;height:40px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--text-1);
  display:inline-flex;align-items:center;justify-content:center;
  transition:color .18s ease,border-color .18s ease,transform .18s ease;
}
.rail-btn:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-1px);}
.rail-btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}

/* ---------- 两列交错海报卡 ---------- */
.poster-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:26px;
}
.poster-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,opacity .25s ease;
}
.poster-card:nth-child(even){margin-top:44px;}
.poster-card:hover{
  transform:translateY(-4px);
  border-color:rgba(31,211,165,.42);
  box-shadow:var(--shadow-2);
}
.poster-card.is-hidden{display:none;}
.poster-card .cover{
  position:relative;
  aspect-ratio:3/4;
  overflow:hidden;
  background:var(--bg-2);
}
.poster-card .cover img{
  width:100%;height:100%;object-fit:cover;border-radius:0;
  transition:transform .45s ease;
}
.poster-card:hover .cover img{transform:scale(1.04);}
.poster-card .cover::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(to top,rgba(11,13,15,.88) 0%,rgba(11,13,15,.12) 48%,rgba(11,13,15,0) 100%);
}
.poster-card .cover .overlay{
  position:absolute;
  left:20px;right:20px;bottom:18px;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.poster-card .body{padding:22px 22px 24px;flex:1;display:flex;flex-direction:column;}
.poster-card h3{font-size:21px;margin-bottom:10px;}
.poster-card p{font-size:15px;color:var(--text-1);line-height:1.8;margin-bottom:18px;}
.poster-card .foot{
  margin-top:auto;
  padding-top:16px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}

/* ---------- 流程步骤 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:22px;
  counter-reset:step;
}
.step{
  position:relative;
  padding:28px 22px 26px;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  transition:border-color .2s ease,transform .2s ease,background .2s ease;
}
.step:hover{border-color:rgba(31,211,165,.4);transform:translateY(-4px);background:var(--bg-2);}
.step::before{
  counter-increment:step;
  content:"0" counter(step);
  display:block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--brand);
  margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:18px;margin-bottom:10px;}
.step p{font-size:14px;color:var(--text-2);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:900px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 0;
  font-size:17px;
  font-weight:600;
  color:var(--text-0);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary::after{
  content:"+";
  flex-shrink:0;
  width:28px;height:28px;
  border-radius:999px;
  border:1px solid var(--line-strong);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  font-weight:400;
  color:var(--text-1);
  transition:transform .2s ease,color .2s ease,border-color .2s ease;
}
.faq-item[open] summary{color:var(--brand);}
.faq-item[open] summary::after{
  content:"–";
  color:var(--brand);
  border-color:rgba(31,211,165,.5);
  transform:rotate(180deg);
}
.faq-item .answer{
  padding:0 0 24px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-1);
  max-width:760px;
}

/* ---------- CTA ---------- */
.cta{
  position:relative;
  padding:88px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(90deg,rgba(11,13,15,.94) 0%,rgba(11,13,15,.76) 52%,rgba(11,13,15,.58) 100%),
    url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.cta .inner{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:center;
}
.cta h2{margin-bottom:16px;}
.cta .inner p{font-size:16px;max-width:560px;color:var(--text-1);}
.cta .actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px;}
.subscribe{
  background:rgba(18,21,26,.82);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px;
  backdrop-filter:blur(8px);
}
.subscribe h3{font-size:18px;margin-bottom:8px;}
.subscribe p{font-size:14px;color:var(--text-2);margin-bottom:18px;}
.field{display:flex;gap:10px;flex-wrap:wrap;}
.field input{
  flex:1 1 180px;
  height:47px;
  padding:0 16px;
  border-radius:var(--radius-input);
  background:var(--bg-1);
  border:1px solid var(--line);
  color:var(--text-0);
  font-size:15px;
  font-family:inherit;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.field input::placeholder{color:var(--text-2);}
.field input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px var(--focus);
}
.form-note{font-size:12px;color:var(--text-2);margin-top:12px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--bg-1);
  border-top:1px solid var(--line);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:44px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line);
}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  margin-bottom:18px;
}
.footer-brand b{font-size:16px;font-weight:700;}
.footer-col h4{
  font-size:14px;
  letter-spacing:.04em;
  color:var(--text-0);
  margin-bottom:18px;
}
.footer-col p{font-size:14px;line-height:1.85;color:var(--text-2);}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  font-size:14px;
  color:var(--text-2);
  transition:color .18s ease,transform .18s ease;
  width:fit-content;
}
.footer-links a:hover{color:var(--brand);transform:translateX(3px);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding-top:26px;
  flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-2);margin:0;}
.meta-links{display:flex;gap:20px;flex-wrap:wrap;}
.meta-links a{
  font-size:13px;
  color:var(--text-2);
  transition:color .18s ease;
}
.meta-links a:hover{color:var(--brand);}

/* ---------- 响应式 ---------- */
@media (max-width:1200px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px;}
  .footer-col:last-child{grid-column:1 / -1;}
}
@media (max-width:992px){
  .section{padding:72px 0;}
  .section.tight{padding:56px 0;}
  .nav-toggle{display:flex;}
  .main-nav{
    position:fixed;
    top:76px;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:18px 24px 26px;
    background:rgba(11,13,15,.97);
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(14px);
    transform:translateY(-12px);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
    max-height:calc(100vh - 76px);
    overflow-y:auto;
  }
  .main-nav.is-open{
    transform:translateY(0);
    opacity:1;
    visibility:visible;
    pointer-events:auto;
  }
  .main-nav a{
    display:flex;
    align-items:center;
    gap:10px;
    padding:13px 4px;
    border-radius:10px;
    font-size:16px;
    border-bottom:1px solid var(--line);
  }
  .main-nav a:last-child{border-bottom:none;}
  .main-nav a::after{display:none;}
  .main-nav a.active{background:transparent;color:var(--brand);}
  .main-nav a.active::before{
    content:"";
    width:8px;height:8px;border-radius:50%;
    background:var(--brand);
    box-shadow:0 0 12px rgba(31,211,165,.7);
    flex-shrink:0;
  }
  .channel-hero{padding:132px 0 56px;}
  .stats{grid-template-columns:repeat(2,1fr);margin-top:-28px;}
  .poster-grid{grid-template-columns:1fr;gap:20px;}
  .poster-card:nth-child(even){margin-top:0;}
  .poster-card .cover{aspect-ratio:16/9;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .cta .inner{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .channel-hero{padding:120px 0 48px;min-height:520px;display:flex;align-items:center;}
  .channel-hero h1{font-size:clamp(32px,7vw,40px);}
  .hero-actions .btn{flex:1 1 auto;}
  .rail-card{flex:0 0 258px;}
  .section-head{margin-bottom:26px;}
  .stats{grid-template-columns:1fr 1fr;}
  .stat{padding:20px 18px;}
  .step{padding:22px 18px;}
  .faq-item summary{font-size:16px;padding:18px 0;}
  .cta{padding:64px 0;}
  .site-footer{padding:56px 0 28px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px;}
}
@media (max-width:480px){
  .container{padding:0 18px;}
  .logo-text span{display:none;}
  .steps{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .field{flex-direction:column;}
  .field input,.field .btn{width:100%;}
  .poster-card .body{padding:18px;}
  .chip{height:34px;font-size:13px;padding:0 13px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --bg-0:#0B0D0F;
  --bg-1:#12151A;
  --bg-2:#1A1F26;
  --surface:#1D232B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text-0:#F4F7F2;
  --text-1:#C3CBC5;
  --text-2:#8A938C;
  --brand:#1FD3A5;
  --brand-2:#FF8A4C;
  --brand-soft:rgba(31,211,165,.14);
  --brand-soft-2:rgba(255,138,76,.14);
  --focus:rgba(31,211,165,.32);
  --danger:#FF5C5C;
  --success:#1FD3A5;
  --radius-card:18px;
  --radius-img:14px;
  --radius-input:12px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --shadow-hover:0 28px 80px rgba(0,0,0,.55);
  --container:1320px;
  --header-h:72px;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:radial-gradient(rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:3px 3px;
  opacity:.75;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .18s ease}
a:hover{color:var(--brand)}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;color:var(--text-0);font-weight:700;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--brand-soft);color:var(--text-0)}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;position:relative;z-index:1}
@media (min-width:1200px){.container{padding:0 32px}}

/* ============ 通用排版 ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--brand);background:var(--brand-soft);
  border:1px solid rgba(31,211,165,.24);
  padding:6px 12px;border-radius:999px;line-height:1;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 12px var(--brand)}
.section{padding:96px 0;position:relative}
.section--tight{padding:72px 0}
.section--soft{background:linear-gradient(180deg,rgba(26,31,38,.55),rgba(11,13,15,0) 85%)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{font-size:clamp(26px,3.5vw,36px);line-height:1.25}
.section-head p{color:var(--text-2);font-size:15px;max-width:620px;margin-top:12px;line-height:1.8}
.lead{color:var(--text-1);font-size:17px;line-height:1.9}
.meta-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13px;color:var(--text-2);font-variant-numeric:tabular-nums}
.dot{width:3px;height:3px;border-radius:50%;background:var(--text-2);display:inline-block}
.tag{
  display:inline-flex;align-items:center;
  font-size:12px;line-height:1;letter-spacing:.02em;
  padding:5px 10px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  border:1px solid rgba(31,211,165,.2);
}
.tag--warm{background:var(--brand-soft-2);color:var(--brand-2);border-color:rgba(255,138,76,.24)}
.tag--ghost{background:transparent;color:var(--text-2);border-color:var(--line)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,border-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--brand);color:#06231B;box-shadow:0 10px 30px rgba(31,211,165,.22)}
.btn--primary:hover{background:#2ee0b3;color:#06231B;transform:translateY(-1px);box-shadow:0 14px 40px rgba(31,211,165,.3)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:transparent;border:1px solid var(--line-strong);color:var(--text-0)}
.btn--ghost:hover{border-color:rgba(31,211,165,.55);color:var(--brand);transform:translateY(-1px)}
.btn--text{padding:0;height:auto;color:var(--brand);font-weight:600}
.btn--text::after{content:"→";transition:transform .2s ease}
.btn--text:hover::after{transform:translateX(4px)}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.btn--block{width:100%}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:80;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .24s ease,border-color .24s ease,backdrop-filter .24s ease;
}
.site-header.is-scrolled{
  background:rgba(11,13,15,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--header-h)}
.logo{display:inline-flex;align-items:center;gap:12px;color:var(--text-0)}
.logo-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  display:grid;place-items:center;
  background:linear-gradient(140deg,#1FD3A5,#0E8C6E);
  color:#06231B;font-weight:800;font-size:14px;letter-spacing:.02em;
  box-shadow:0 8px 22px rgba(31,211,165,.24);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:16px;font-weight:700;color:var(--text-0)}
.logo-text span{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--text-2)}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav a{
  position:relative;
  padding:10px 14px;border-radius:999px;
  font-size:14.5px;color:var(--text-1);
  transition:color .18s ease,background .18s ease;
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.main-nav a:hover{color:var(--text-0)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--brand);background:var(--brand-soft)}
.main-nav a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line);color:var(--text-1);
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.icon-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}
.icon-btn:hover{border-color:rgba(31,211,165,.5);color:var(--brand);background:var(--brand-soft)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{display:block;width:18px;height:1.6px;background:var(--text-0);border-radius:2px;transition:transform .22s ease,opacity .22s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}

/* ============ 面包屑 ============ */
.crumb-bar{padding-top:calc(var(--header-h) + 22px);background:var(--bg-0)}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-2);flex-wrap:wrap}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{width:1px;height:12px;background:var(--line-strong);display:inline-block}
.breadcrumb .current{color:var(--text-0)}

/* ============ 频道头图 ============ */
.channel-hero{position:relative;margin-top:28px;border-radius:24px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.channel-hero__bg{position:absolute;inset:0}
.channel-hero__bg img{width:100%;height:100%;object-fit:cover;filter:saturate(.9)}
.channel-hero__veil{
  position:absolute;inset:0;
  background:
    linear-gradient(100deg,rgba(11,13,15,.96) 8%,rgba(11,13,15,.78) 48%,rgba(11,13,15,.42) 100%),
    linear-gradient(180deg,rgba(11,13,15,.2),rgba(11,13,15,.92));
}
.channel-hero__inner{position:relative;z-index:2;padding:64px 56px 56px;max-width:820px}
.channel-hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.15;margin:18px 0 0}
.channel-hero h1 em{font-style:normal;color:var(--brand)}
.channel-hero .lead{margin-top:18px;max-width:660px;color:var(--text-1)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.hero-facts{display:flex;gap:36px;flex-wrap:wrap;margin-top:38px;padding-top:26px;border-top:1px solid var(--line)}
.hero-facts div{min-width:96px}
.hero-facts b{display:block;font-size:22px;color:var(--text-0);font-variant-numeric:tabular-nums}
.hero-facts span{font-size:13px;color:var(--text-2)}

/* ============ 索引 + 列表 双栏 ============ */
.cat-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:52px;align-items:start}
.index-panel{position:sticky;top:calc(var(--header-h) + 24px)}
.index-panel__title{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--text-2);margin-bottom:16px}
.index-list{border-left:1px solid var(--line)}
.index-list a{
  position:relative;display:block;padding:11px 0 11px 20px;
  font-size:14.5px;color:var(--text-2);
  transition:color .18s ease,padding-left .18s ease;
}
.index-list a::before{
  content:"";position:absolute;left:-4.5px;top:50%;transform:translateY(-50%) scale(.6);
  width:8px;height:8px;border-radius:50%;background:var(--line-strong);
  transition:background .18s ease,transform .18s ease,box-shadow .18s ease;
}
.index-list a:hover{color:var(--text-0);padding-left:24px}
.index-list a.active{color:var(--brand);font-weight:600}
.index-list a.active::before{background:var(--brand);transform:translateY(-50%) scale(1);box-shadow:0 0 12px var(--brand)}
.index-aside{
  margin-top:28px;padding:20px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--bg-1);
}
.index-aside h4{font-size:14px;margin-bottom:8px}
.index-aside p{font-size:13px;color:var(--text-2);line-height:1.75}

/* ============ 行式条目列表 ============ */
.row-list{display:flex;flex-direction:column;gap:14px}
.row-item{
  display:grid;grid-template-columns:112px minmax(0,1fr) 32px;gap:22px;align-items:center;
  padding:20px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:linear-gradient(180deg,rgba(29,35,43,.72),rgba(18,21,26,.72));
  position:relative;overflow:hidden;
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.row-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--brand);transform:scaleY(0);transform-origin:top;
  transition:transform .24s ease;
}
.row-item:hover{border-color:rgba(31,211,165,.4);transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.row-item:hover::before{transform:scaleY(1)}
.row-thumb{width:112px;height:76px;border-radius:var(--radius-img);overflow:hidden;background:var(--bg-2)}
.row-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.row-item:hover .row-thumb img{transform:scale(1.04)}
.row-body h3{font-size:19px;line-height:1.4;margin-bottom:8px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.row-body p{font-size:14.5px;color:var(--text-2);line-height:1.75;margin-bottom:10px}
.row-points{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.row-points span{
  font-size:12px;color:var(--text-2);border:1px solid var(--line);
  border-radius:999px;padding:4px 10px;line-height:1.2;
}
.row-arrow{
  width:32px;height:32px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--text-2);
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.row-item:hover .row-arrow{border-color:var(--brand);color:var(--brand);transform:translateX(3px)}

/* ============ 卖点网格（不等宽） ============ */
.value-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:22px}
.value-card{
  grid-column:span 2;
  padding:28px 26px;border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(29,35,43,.66),rgba(18,21,26,.66));
  transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.value-card:hover{border-color:rgba(31,211,165,.4);transform:translateY(-4px);box-shadow:var(--shadow)}
.value-card--wide{grid-column:span 3;background:linear-gradient(120deg,rgba(31,211,165,.12),rgba(18,21,26,.7));border-color:rgba(31,211,165,.24)}
.value-card .num{
  font-size:13px;color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:.08em;
  display:inline-block;margin-bottom:14px;
}
.value-card h3{font-size:20px;margin-bottom:10px}
.value-card p{font-size:14.5px;color:var(--text-2);line-height:1.8}

/* ============ 流程步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.step{padding:32px 26px 30px;border-right:1px solid var(--line);position:relative}
.step:last-child{border-right:0}
.step .step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand);
  font-size:14px;font-weight:700;margin-bottom:16px;font-variant-numeric:tabular-nums;
}
.step h3{font-size:18px;margin-bottom:10px}
.step p{font-size:14px;color:var(--text-2);line-height:1.8}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;font-weight:600;color:var(--text-0);
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;
  width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--brand);
  font-size:16px;font-weight:400;line-height:1;
  transition:transform .22s ease,background .22s ease;
}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::after{content:"−";background:var(--brand-soft);border-color:rgba(31,211,165,.4);transform:rotate(180deg)}
.faq-item summary:hover{color:var(--brand)}
.faq-body{padding:0 0 24px;font-size:15.5px;line-height:1.85;color:var(--text-1);max-width:820px}

/* ============ CTA ============ */
.cta-band{
  position:relative;border-radius:26px;overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.cta-band__bg{position:absolute;inset:0}
.cta-band__bg img{width:100%;height:100%;object-fit:cover}
.cta-band__veil{position:absolute;inset:0;background:linear-gradient(110deg,rgba(11,13,15,.96) 20%,rgba(11,13,15,.7) 70%,rgba(11,13,15,.5))}
.cta-band__inner{position:relative;z-index:2;padding:60px 56px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:48px;align-items:center}
.cta-band h2{font-size:clamp(24px,3vw,34px);line-height:1.3;margin-bottom:14px}
.cta-band p{font-size:15.5px;color:var(--text-1);line-height:1.85;max-width:520px}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.cta-form input{
  flex:1 1 240px;min-width:0;height:48px;padding:0 18px;
  background:var(--bg-1);border:1px solid var(--line);border-radius:var(--radius-input);
  color:var(--text-0);transition:border-color .18s ease,box-shadow .18s ease;
}
.cta-form input::placeholder{color:var(--text-2)}
.cta-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--focus)}
.form-note{font-size:13px;color:var(--text-2);margin-top:12px}
.form-msg{font-size:13.5px;margin-top:12px;color:var(--success);display:none}
.form-msg.is-error{color:var(--danger)}
.form-msg.is-visible{display:block}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);margin-top:96px;padding-top:64px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;border-bottom:1px solid var(--line);
}
.footer-col h4{font-size:14px;margin-bottom:18px;color:var(--text-0)}
.footer-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand b{font-size:16px;color:var(--text-0)}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.85}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px 0 32px;flex-wrap:wrap}
.footer-bottom p{font-size:13px;color:var(--text-2)}
.meta-links{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.meta-links a{font-size:13px;color:var(--text-2)}
.meta-links a:hover{color:var(--brand)}
.to-top{display:inline-flex;align-items:center;gap:6px}

/* ============ 回到顶部浮动 ============ */
.back-top{
  position:fixed;right:24px;bottom:24px;z-index:60;
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(29,35,43,.9);border:1px solid var(--line-strong);color:var(--text-1);
  backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s ease,border-color .2s ease,color .2s ease;
}
.back-top.is-visible{opacity:1;visibility:visible;transform:none}
.back-top:hover{border-color:var(--brand);color:var(--brand)}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .cat-layout{grid-template-columns:240px minmax(0,1fr);gap:36px}
  .value-grid{grid-template-columns:repeat(4,1fr)}
  .value-card{grid-column:span 2}
  .value-card--wide{grid-column:span 2}
}
@media (max-width:992px){
  :root{--header-h:64px}
  .main-nav{
    position:fixed;left:0;right:0;top:var(--header-h);
    flex-direction:column;align-items:stretch;gap:2px;
    background:rgba(11,13,15,.97);
    backdrop-filter:blur(14px);
    border-top:1px solid var(--line);
    padding:14px 24px 24px;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
    max-height:calc(100vh - var(--header-h));overflow-y:auto;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:none}
  .main-nav a{padding:14px 16px;border-radius:12px;font-size:15.5px}
  .main-nav a::after{display:none}
  .main-nav a::before{
    content:"";position:absolute;left:6px;top:50%;transform:translateY(-50%);
    width:8px;height:8px;border-radius:50%;background:transparent;
  }
  .main-nav a.active{padding-left:26px}
  .main-nav a.active::before{background:var(--brand);box-shadow:0 0 10px var(--brand)}
  .nav-toggle{display:flex}
  .cat-layout{grid-template-columns:1fr;gap:32px}
  .index-panel{position:static}
  .index-list{border-left:0;border-top:1px solid var(--line);display:flex;gap:10px;overflow-x:auto;padding-top:14px;scrollbar-width:none}
  .index-list::-webkit-scrollbar{display:none}
  .index-list a{padding:8px 14px;border:1px solid var(--line);border-radius:999px;white-space:nowrap;font-size:13.5px}
  .index-list a::before{display:none}
  .index-list a:hover{padding-left:14px}
  .index-list a.active{border-color:rgba(31,211,165,.45);background:var(--brand-soft)}
  .index-aside{display:none}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step{border-bottom:1px solid var(--line)}
  .step:nth-child(2n){border-right:0}
  .cta-band__inner{grid-template-columns:1fr;gap:32px;padding:48px 40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .channel-hero__inner{padding:52px 40px 46px}
}
@media (max-width:768px){
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .container{padding:0 18px}
  .row-item{grid-template-columns:1fr;gap:14px;padding:18px}
  .row-thumb{width:100%;height:150px}
  .row-arrow{display:none}
  .value-grid{grid-template-columns:1fr}
  .value-card,.value-card--wide{grid-column:span 1}
  .steps{grid-template-columns:1fr}
  .step{border-right:0;padding:26px 0}
  .channel-hero__inner{padding:40px 24px 36px}
  .channel-hero h1{font-size:clamp(26px,7vw,34px)}
  .hero-facts{gap:24px}
  .cta-band__inner{padding:40px 24px}
  .cta-form input{flex:1 1 100%}
  .cta-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .section-head{margin-bottom:28px}
}
@media (max-width:480px){
  .logo-text span{display:none}
  .hero-actions .btn{width:100%}
  .hero-facts b{font-size:19px}
  .crumb-bar{padding-top:calc(var(--header-h) + 16px)}
  .faq-item summary{font-size:16px}
  .back-top{right:16px;bottom:16px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --bg-0:#0B0D0F;
  --bg-1:#12151A;
  --bg-2:#1A1F26;
  --surface:#1D232B;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --text-0:#F4F7F2;
  --text-1:#C3CBC5;
  --text-2:#8A938C;
  --brand:#1FD3A5;
  --brand-2:#FF8A4C;
  --brand-soft:rgba(31,211,165,.14);
  --focus:rgba(31,211,165,.32);
  --danger:#FF5C5C;
  --success:#1FD3A5;
  --radius-card:18px;
  --radius-img:14px;
  --radius-input:12px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --shadow-hover:0 28px 80px rgba(0,0,0,.55);
  --container:1320px;
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
h1,h2,h3,h4{margin:0;color:var(--text-0);font-family:var(--font);font-weight:700;letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,background-color .18s ease;}
img{max-width:100%;display:block;border:0;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:6px;}
::selection{background:var(--brand-soft);color:var(--text-0);}

/* ============ 通用布局 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
main{display:block;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--deep{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 .head-text{max-width:720px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brand);
  background:var(--brand-soft);
  border:1px solid rgba(31,211,165,.24);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 10px rgba(31,211,165,.9);
}
h2.sec-title{
  font-size:clamp(26px,3.5vw,36px);
  line-height:1.25;
  margin-bottom:12px;
}
.sec-desc{color:var(--text-2);font-size:15px;line-height:1.8;max-width:640px;}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease,border-color .2s ease,color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--brand);
  color:#06231B;
  box-shadow:0 12px 30px rgba(31,211,165,.22);
}
.btn-primary:hover{
  background:#2BE0B3;
  transform:translateY(-1px);
  box-shadow:0 16px 38px rgba(31,211,165,.34);
}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--text-0);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-warm{
  background:transparent;
  border-color:rgba(255,138,76,.42);
  color:var(--brand-2);
}
.btn-warm:hover{background:rgba(255,138,76,.12);transform:translateY(-1px);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-size:14px;
  font-weight:600;
}
.link-arrow span{transition:transform .2s ease;}
.link-arrow:hover span{transform:translateX(4px);}

/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  line-height:1;
  letter-spacing:.02em;
  padding:6px 10px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand);
  border:1px solid rgba(31,211,165,.2);
}
.tag--warm{background:rgba(255,138,76,.14);color:var(--brand-2);border-color:rgba(255,138,76,.26);}
.tag--muted{background:rgba(255,255,255,.05);color:var(--text-2);border-color:var(--line);}
.meta-line{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-2);
  font-variant-numeric:tabular-nums;
}
.meta-line .dot{width:3px;height:3px;border-radius:50%;background:var(--line-strong);}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .28s ease,border-color .28s ease,backdrop-filter .28s ease;
}
.site-header.scrolled{
  background:rgba(11,13,15,.88);
  border-bottom-color:var(--line);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:78px;
}
.logo{display:inline-flex;align-items:center;gap:12px;}
.logo-mark{
  width:40px;height:40px;
  flex:0 0 40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:12px;
  background:linear-gradient(140deg,rgba(31,211,165,.9),rgba(31,211,165,.35));
  color:#06231B;
  font-weight:800;
  font-size:14px;
  letter-spacing:.04em;
  box-shadow:0 8px 22px rgba(31,211,165,.24);
}
.logo-text{display:flex;flex-direction:column;line-height:1.2;}
.logo-text b{color:var(--text-0);font-size:16px;font-weight:700;letter-spacing:.01em;}
.logo-text span{color:var(--text-2);font-size:11px;letter-spacing:.16em;text-transform:uppercase;}
.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  position:relative;
  padding:10px 14px;
  font-size:14px;
  color:var(--text-1);
  border-radius:999px;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s ease;
}
.main-nav a:hover{color:var(--text-0);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{
  color:var(--text-0);
  background:var(--brand-soft);
}
.main-nav a.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:42px;height:42px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--text-1);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.icon-btn svg{width:18px;height:18px;}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  padding:11px 10px;
  flex-direction:column;
  justify-content:space-between;
}
.nav-toggle span{
  display:block;
  height:2px;
  width:100%;
  border-radius:2px;
  background:var(--text-0);
  transition:transform .22s ease,opacity .22s 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);}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:13px;
  color:var(--text-2);
  margin-bottom:22px;
}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:var(--line-strong);}
.breadcrumb .current{color:var(--text-0);}

/* ============ 首屏 ============ */
.page-hero{
  position:relative;
  padding:158px 0 92px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.page-hero .hero-bg{
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(100deg,rgba(11,13,15,.96) 0%,rgba(11,13,15,.74) 46%,rgba(11,13,15,.42) 100%),
    url("/assets/images/backpic/back-3.webp");
  background-size:cover;
  background-position:center;
  transform:scale(1.02);
}
.page-hero .hero-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(60% 55% at 82% 18%,rgba(31,211,165,.20) 0%,transparent 62%),
    radial-gradient(48% 40% at 12% 88%,rgba(255,138,76,.16) 0%,transparent 66%),
    linear-gradient(to bottom,rgba(11,13,15,0) 58%,rgba(11,13,15,.96) 100%);
}
.page-hero .hero-inner{position:relative;z-index:2;max-width:900px;}
.page-hero h1{
  font-size:clamp(32px,5vw,56px);
  line-height:1.15;
  font-weight:700;
  margin-bottom:18px;
}
.page-hero .hero-sub{
  font-size:clamp(16px,1.6vw,19px);
  color:var(--text-1);
  line-height:1.8;
  max-width:660px;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px;}
.hero-meta{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px;
  max-width:840px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.hero-meta li{display:flex;flex-direction:column;gap:4px;}
.hero-meta b{
  font-size:clamp(22px,2.4vw,28px);
  color:var(--text-0);
  font-variant-numeric:tabular-nums;
  font-weight:700;
}
.hero-meta span{font-size:13px;color:var(--text-2);}

/* ============ 步骤流程 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.step-card{
  position:relative;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px 26px;
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(31,211,165,.36);box-shadow:var(--shadow);}
.step-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:38px;height:38px;
  border-radius:12px;
  background:var(--brand-soft);
  color:var(--brand);
  font-weight:700;
  font-size:15px;
  margin-bottom:18px;
  font-variant-numeric:tabular-nums;
}
.step-card h3{font-size:20px;margin-bottom:10px;line-height:1.35;}
.step-card p{font-size:14.5px;color:var(--text-2);line-height:1.8;}

/* ============ 筛选 chips ============ */
.chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:34px;
}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--bg-2);
  color:var(--text-1);
  font-size:13.5px;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease,transform .2s ease;
}
.chip:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.chip.is-active{
  background:var(--brand-soft);
  border-color:rgba(31,211,165,.4);
  color:var(--brand);
}
.chip .count{font-size:12px;color:var(--text-2);font-variant-numeric:tabular-nums;}
.chip.is-active .count{color:var(--brand);}

/* ============ 海报墙 ============ */
.poster-wall{
  column-count:3;
  column-gap:24px;
}
.poster-card{
  break-inside:avoid;
  display:inline-block;
  width:100%;
  margin:0 0 24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.poster-card:hover{
  transform:translateY(-4px);
  border-color:rgba(31,211,165,.4);
  box-shadow:var(--shadow-hover);
}
.poster-media{position:relative;overflow:hidden;background:var(--bg-2);}
.poster-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .5s ease;
}
.poster-card:hover .poster-media img{transform:scale(1.04);}
.poster-card:nth-child(3n+1) .poster-media img{aspect-ratio:3/4;}
.poster-card:nth-child(3n+2) .poster-media img{aspect-ratio:16/10;}
.poster-card:nth-child(3n) .poster-media img{aspect-ratio:4/5;}
.poster-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(11,13,15,.72),rgba(11,13,15,0) 58%);
  pointer-events:none;
}
.poster-badge{
  position:absolute;
  left:14px;top:14px;
  z-index:2;
}
.poster-count{
  position:absolute;
  right:14px;bottom:14px;
  z-index:2;
  font-size:12px;
  padding:6px 10px;
  border-radius:999px;
  background:rgba(11,13,15,.72);
  border:1px solid var(--line-strong);
  color:var(--text-0);
  font-variant-numeric:tabular-nums;
}
.poster-body{padding:20px 20px 22px;}
.poster-body h3{
  font-size:19px;
  line-height:1.4;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.poster-body p{
  font-size:14px;
  color:var(--text-2);
  line-height:1.8;
  margin-bottom:16px;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.poster-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:14px;
  border-top:1px solid var(--line);
}

/* ============ 横滑片单 ============ */
.rail-wrap{position:relative;}
.rail-wrap::before,
.rail-wrap::after{
  content:"";
  position:absolute;
  top:0;bottom:24px;
  width:56px;
  z-index:3;
  pointer-events:none;
}
.rail-wrap::before{left:-8px;background:linear-gradient(to right,var(--bg-0),rgba(11,13,15,0));}
.rail-wrap::after{right:-8px;background:linear-gradient(to left,var(--bg-0),rgba(11,13,15,0));}
.rail{
  display:flex;
  gap:22px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:4px 2px 22px;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-card{
  flex:0 0 300px;
  scroll-snap-align:start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.rail-card:hover{transform:translateY(-4px);border-color:rgba(31,211,165,.38);box-shadow:var(--shadow);}
.rail-media{overflow:hidden;background:var(--bg-2);}
.rail-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .5s ease;}
.rail-card:hover .rail-media img{transform:scale(1.04);}
.rail-body{padding:18px 18px 20px;}
.rail-body h3{font-size:17px;line-height:1.4;margin:10px 0 8px;}
.rail-body p{font-size:13.5px;color:var(--text-2);line-height:1.75;}
.rail-nav{display:flex;gap:10px;}
.rail-btn{
  width:40px;height:40px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  border:1px solid var(--line-strong);
  color:var(--text-1);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.rail-btn svg{width:16px;height:16px;}
.rail-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);}

/* ============ FAQ ============ */
.faq-list{max-width:900px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 2px;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--text-0);
  line-height:1.5;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex:0 0 26px;
  width:26px;height:26px;
  position:relative;
  border-radius:999px;
  border:1px solid var(--line-strong);
  transition:border-color .2s ease,background-color .2s ease;
}
.faq-icon::before,
.faq-icon::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  background:var(--text-1);
  transform:translate(-50%,-50%);
  transition:transform .22s ease,background-color .22s ease;
}
.faq-icon::before{width:11px;height:1.6px;}
.faq-icon::after{width:1.6px;height:11px;}
.faq-item.open .faq-q{color:var(--brand);}
.faq-item.open .faq-icon{border-color:rgba(31,211,165,.5);background:var(--brand-soft);}
.faq-item.open .faq-icon::before{background:var(--brand);}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);background:var(--brand);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  padding:0 44px 24px 2px;
  font-size:14.5px;
  color:var(--text-1);
  line-height:1.85;
}

/* ============ CTA + 订阅 ============ */
.cta-section{
  position:relative;
  padding:96px 0;
  overflow:hidden;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.cta-bg{
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(95deg,rgba(11,13,15,.95) 8%,rgba(11,13,15,.7) 55%,rgba(11,13,15,.92) 100%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.cta-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:radial-gradient(52% 60% at 78% 26%,rgba(255,138,76,.18) 0%,transparent 68%);
}
.cta-inner{
  position:relative;
  z-index:2;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:48px;
  align-items:center;
}
.cta-inner h2{font-size:clamp(26px,3.5vw,38px);line-height:1.25;margin-bottom:14px;}
.cta-inner .cta-sub{color:var(--text-1);font-size:16px;line-height:1.85;max-width:520px;margin-bottom:26px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.subscribe-card{
  background:rgba(18,21,26,.86);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-card);
  padding:30px 28px;
  box-shadow:var(--shadow);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
}
.subscribe-card h3{font-size:20px;margin-bottom:10px;}
.subscribe-card p{font-size:14px;color:var(--text-2);line-height:1.8;margin-bottom:20px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13px;color:var(--text-2);}
.field input{
  height:48px;
  padding:0 16px;
  background:var(--bg-1);
  border:1px solid var(--line);
  border-radius:var(--radius-input);
  color:var(--text-0);
  font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder{color:#5E665F;}
.field input:hover{border-color:var(--line-strong);}
.field input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px var(--focus);
}
.subscribe-form{display:flex;flex-direction:column;gap:16px;}
.form-hint{font-size:12.5px;color:var(--text-2);line-height:1.7;}
.form-hint.is-error{color:var(--danger);}
.form-hint.is-success{color:var(--success);}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-1);border-top:1px solid var(--line);padding-top:72px;}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:0;
  padding-bottom:52px;
}
.footer-col{padding-right:28px;}
.footer-col + .footer-col{border-left:1px solid var(--line);padding-left:28px;}
.footer-brand{display:inline-flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand b{color:var(--text-0);font-size:16px;}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.85;}
.footer-col h4{font-size:15px;color:var(--text-0);margin-bottom:18px;font-weight:600;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:var(--text-1);}
.footer-links a:hover{color:var(--brand);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  padding:24px 0 30px;
  border-top:1px solid var(--line);
}
.footer-bottom p{font-size:13px;color:var(--text-2);}
.meta-links{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}
.meta-links a{font-size:13px;color:var(--text-2);}
.meta-links a:hover{color:var(--brand);}
.to-top{display:inline-flex;align-items:center;gap:6px;}

/* ============ 空态 ============ */
.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:56px 24px;
  border:1px dashed var(--line-strong);
  border-radius:var(--radius-card);
  background:var(--bg-2);
  text-align:center;
}
.empty-state .empty-icon{
  width:44px;height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand);
}
.empty-state .empty-icon svg{width:20px;height:20px;}
.empty-state b{color:var(--text-0);font-size:15px;font-weight:600;}
.empty-state span{color:var(--text-2);font-size:13px;}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  .poster-wall{column-count:2;}
  .footer-grid{grid-template-columns:1fr 1fr;row-gap:36px;}
  .footer-col{padding-right:0;}
  .footer-col + .footer-col{border-left:0;padding-left:0;}
  .footer-col:nth-child(even){padding-left:28px;border-left:1px solid var(--line);}
}
@media (max-width:992px){
  .section{padding:72px 0;}
  .section--tight{padding:56px 0;}
  .nav-toggle{display:flex;}
  .main-nav{
    position:fixed;
    top:78px;left:0;right:0;
    bottom:0;
    display:flex;
    flex-direction:column;
    align-items:flex-start;
    gap:4px;
    padding:26px 24px;
    background:rgba(11,13,15,.97);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-top:1px solid var(--line);
    transform:translateY(-12px);
    opacity:0;
    visibility:hidden;
    transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
    overflow-y:auto;
  }
  .main-nav.open{opacity:1;visibility:visible;transform:translateY(0);}
  .main-nav a{
    width:100%;
    font-size:16px;
    padding:14px 16px;
    border-radius:12px;
  }
  .main-nav a::after{display:none;}
  .main-nav a::before{
    content:"";
    position:absolute;
    left:0;top:50%;
    transform:translateY(-50%);
    width:8px;height:8px;
    border-radius:50%;
    background:var(--brand);
    opacity:0;
    transition:opacity .2s ease;
  }
  .main-nav a.active::before{opacity:1;}
  .main-nav a.active{background:var(--brand-soft);}
  .steps{grid-template-columns:1fr;}
  .cta-inner{grid-template-columns:1fr;gap:34px;}
  .hero-meta{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;}
  .page-hero{padding:130px 0 68px;}
  .page-hero h1{font-size:clamp(32px,8vw,40px);}
  .hero-actions{gap:12px;margin-bottom:34px;}
  .hero-actions .btn{width:100%;}
  .poster-wall{column-count:1;}
  .rail-card{flex:0 0 260px;}
  .rail-wrap::before,.rail-wrap::after{display:none;}
  .faq-q{font-size:16px;padding:18px 0;}
  .faq-a p{padding:0 36px 20px 0;}
  .footer-grid{grid-template-columns:1fr;row-gap:32px;}
  .footer-col:nth-child(even){padding-left:0;border-left:0;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-section{padding:72px 0;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .logo-text span{display:none;}
  .hero-meta{grid-template-columns:1fr 1fr;gap:14px;}
  .btn{width:100%;}
  .subscribe-card{padding:24px 20px;}
  .poster-body{padding:18px 16px 20px;}
}

/* ============ 动效偏好 ============ */
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}