/* roulang page: index */
:root{
  --c-primary:#6D4AFF;
  --c-primary-deep:#4A2FD6;
  --c-accent:#2ED8C3;
  --c-spark:#FFB84D;
  --c-bg:#0E0A1F;
  --c-bg-soft:#161033;
  --c-surface:#1B1237;
  --c-surface-2:#221847;
  --c-line:rgba(160,140,255,.18);
  --c-line-soft:rgba(255,255,255,.08);
  --c-text:#EDE9FF;
  --c-text-2:#A79FD0;
  --c-text-3:#7A72A6;
  --ok:#35D07F; --warn:#FF7A6B; --info:#5FB8FF;
  --r-sm:10px; --r-btn:12px; --r-card:20px; --r-lg:28px;
  --sh-card:inset 0 1px 0 rgba(255,255,255,.04), 0 18px 40px -24px rgba(80,50,220,.55);
  --sh-card-hover:inset 0 1px 0 rgba(255,255,255,.06), 0 26px 60px -28px rgba(110,74,255,.7);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--c-bg);
  color:var(--c-text);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:var(--c-accent);text-decoration:none;text-underline-offset:3px}
a:hover{text-decoration:none}
img{max-width:100%;display:block;border-style:none}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}

/* 背景层 */
.starfield{position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(1000px 620px at 12% -12%, rgba(109,74,255,.24), transparent 66%),
    radial-gradient(880px 520px at 88% 4%, rgba(46,216,195,.10), transparent 62%),
    radial-gradient(1200px 780px at 50% 118%, rgba(74,47,214,.20), transparent 70%),
    linear-gradient(180deg,#0E0A1F 0%, #120C29 42%, #0E0A1F 100%);
}
.starfield::after{content:"";position:absolute;inset:0;opacity:.5;
  background-image:
    radial-gradient(1.6px 1.6px at 8% 22%, rgba(255,255,255,.35), transparent 60%),
    radial-gradient(1.4px 1.4px at 22% 68%, rgba(255,255,255,.28), transparent 60%),
    radial-gradient(1.8px 1.8px at 34% 12%, rgba(255,255,255,.32), transparent 60%),
    radial-gradient(1.3px 1.3px at 46% 48%, rgba(255,255,255,.24), transparent 60%),
    radial-gradient(1.6px 1.6px at 58% 82%, rgba(255,255,255,.30), transparent 60%),
    radial-gradient(1.4px 1.4px at 68% 28%, rgba(255,255,255,.26), transparent 60%),
    radial-gradient(1.7px 1.7px at 78% 62%, rgba(255,255,255,.32), transparent 60%),
    radial-gradient(1.3px 1.3px at 88% 18%, rgba(255,255,255,.22), transparent 60%),
    radial-gradient(1.5px 1.5px at 94% 76%, rgba(255,255,255,.28), transparent 60%),
    radial-gradient(1.4px 1.4px at 14% 92%, rgba(255,255,255,.24), transparent 60%),
    radial-gradient(1.5px 1.5px at 64% 6%, rgba(255,255,255,.26), transparent 60%),
    radial-gradient(1.3px 1.3px at 40% 96%, rgba(255,255,255,.22), transparent 60%);
}
.page-wrap{position:relative;z-index:1}

/* 容器与板块 */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
.container-wide{max-width:1360px}
.section{padding:60px 0}
@media(min-width:1024px){.section{padding:96px 0}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:30px}
.section-head h2{font-size:26px;line-height:1.3;font-weight:700;letter-spacing:-.01em}
@media(min-width:1024px){.section-head h2{font-size:32px}}
.section-head p{margin-top:8px;color:var(--c-text-2);font-size:15px;max-width:62ch}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--c-accent);text-transform:none;margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--c-accent),transparent)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;
  border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform 280ms var(--ease),background-color 200ms ease-out,box-shadow 280ms var(--ease),color 200ms ease-out,border-color 200ms ease-out;}
.btn-primary{background:linear-gradient(135deg,#6D4AFF 0%,#4A2FD6 58%,#FFB84D 145%);color:#fff;box-shadow:0 14px 32px -14px rgba(109,74,255,.85)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 20px 40px -16px rgba(109,74,255,.95)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border:1.5px solid var(--c-accent);color:var(--c-accent)}
.btn-ghost:hover{background:rgba(46,216,195,.10);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled]{opacity:.45;pointer-events:none}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--c-accent);font-size:14px;font-weight:600}
.link-more i{font-style:normal;transition:transform 280ms var(--ease)}
.link-more:hover i{transform:translateX(3px)}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;
  font-size:12.5px;letter-spacing:.02em;font-variant-numeric:tabular-nums;
  border:1px solid var(--c-line);color:var(--c-text-2);background:rgba(27,18,55,.65)}
.badge-accent{border-color:rgba(46,216,195,.45);color:#57E6D5;background:rgba(46,216,195,.08)}
.badge-solid{background:linear-gradient(135deg,#6D4AFF,#4A2FD6);color:#fff;border-color:transparent}
.badge-spark{border-color:rgba(255,184,77,.5);color:#FFC670;background:rgba(255,184,77,.10)}
.dot-live{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(53,208,127,.16)}
.dot-live.pulse{animation:pulseDot 1.8s infinite}
@keyframes pulseDot{0%,100%{box-shadow:0 0 0 4px rgba(53,208,127,.16)}50%{box-shadow:0 0 0 8px rgba(53,208,127,.05)}}

/* 头部导航 */
.site-header{position:sticky;top:0;z-index:60;border-bottom:1px solid transparent;
  transition:background-color .3s ease,border-color .3s ease,backdrop-filter .3s ease}
.site-header.scrolled{background:rgba(14,10,31,.86);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom-color:var(--c-line-soft)}
.header-inner{display:flex;align-items:center;gap:18px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--c-text)}
.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:11px;
  background:linear-gradient(135deg,rgba(109,74,255,.28),rgba(46,216,195,.16));border:1px solid var(--c-line)}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;line-height:1}
.brand-sub{display:block;font-size:11px;font-weight:500;color:var(--c-text-3);letter-spacing:.06em;margin-top:4px}
.nav-main{display:none;align-items:center;gap:4px;margin-left:6px}
@media(min-width:1024px){.nav-main{display:flex}}
.nav-link{position:relative;padding:9px 12px;font-size:14.5px;color:var(--c-text-2);border-radius:10px;
  transition:color 200ms ease-out,transform 280ms var(--ease),background-color 200ms ease-out}
.nav-link:hover{color:var(--c-text);transform:translateY(-1px);background:rgba(255,255,255,.04)}
.nav-link.active{color:var(--c-text);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-accent),rgba(46,216,195,0))}
.header-actions{display:none;align-items:center;gap:10px;margin-left:auto}
@media(min-width:1024px){.header-actions{display:flex}}
.search-box{position:relative;display:flex;align-items:center}
.search-box svg{position:absolute;left:12px;width:16px;height:16px;color:var(--c-text-3);pointer-events:none}
.search-box input{height:42px;width:230px;padding:0 14px 0 36px;border-radius:12px;font-size:14px;
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-text);
  transition:border-color 200ms ease-out,box-shadow 200ms ease-out,width 280ms var(--ease)}
.search-box input::placeholder{color:var(--c-text-3)}
.search-box input:hover{border-color:rgba(160,140,255,.32)}
.search-box input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(46,216,195,.14);width:260px}
.link-login{font-size:14px;color:var(--c-text-2);padding:8px 6px;transition:color 200ms ease-out}
.link-login:hover{color:var(--c-text)}
.menu-toggle{display:grid;place-items:center;width:44px;height:44px;margin-left:auto;border-radius:12px;
  border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-text)}
@media(min-width:1024px){.menu-toggle{display:none}}
.menu-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:currentColor;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:currentColor}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

/* 抽屉 */
.overlay{position:fixed;inset:0;background:rgba(8,5,20,.72);opacity:0;pointer-events:none;transition:opacity .3s ease;z-index:70}
.overlay.open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;height:100%;width:min(86vw,360px);z-index:80;padding:26px 22px;
  background:var(--c-bg-soft);border-left:1px solid var(--c-line);overflow-y:auto;
  transform:translateX(102%);transition:transform .32s var(--ease)}
.drawer.open{transform:none}
.drawer .brand{margin-bottom:22px}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:22px}
.drawer-nav a{padding:13px 14px;border-radius:12px;font-size:15px;color:var(--c-text-2);border:1px solid transparent}
.drawer-nav a:hover{background:rgba(255,255,255,.04);color:var(--c-text)}
.drawer-nav a.active{color:var(--c-text);font-weight:600;border-color:var(--c-line);background:rgba(109,74,255,.14)}
.drawer .search-box input{width:100%}
.drawer .search-box{margin-bottom:16px}

/* Hero */
.hero{position:relative;overflow:hidden;min-height:560px;display:flex;align-items:center;
  padding:72px 0 64px}
@media(min-width:1024px){.hero{min-height:640px;padding:96px 0 88px}}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.55}
.hero-bg::after{content:"";position:absolute;inset:0;
  background:
    radial-gradient(720px 520px at 10% 12%, rgba(109,74,255,.38), transparent 62%),
    linear-gradient(115deg, rgba(14,10,31,.94) 0%, rgba(14,10,31,.78) 46%, rgba(14,10,31,.92) 100%)}
.hero-inner{position:relative;z-index:1;display:grid;gap:36px}
@media(min-width:1024px){.hero-inner{grid-template-columns:7fr 5fr;gap:52px;align-items:center}}
.hero h1{font-size:30px;line-height:1.2;font-weight:700;letter-spacing:-.02em;margin:14px 0 16px}
@media(min-width:768px){.hero h1{font-size:42px}}
@media(min-width:1024px){.hero h1{font-size:54px}}
.hero-sub{font-size:16px;line-height:1.85;color:var(--c-text-2);max-width:62ch}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 26px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.hero-cta .btn{flex:1 1 200px}
@media(min-width:640px){.hero-cta .btn{flex:0 0 auto}}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-panel{position:relative;background:linear-gradient(160deg,rgba(34,24,71,.92),rgba(22,16,51,.9));
  border:1px solid var(--c-line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-card)}
@media(min-width:1024px){.hero-panel{margin-bottom:18px}}
.hero-panel .thumb{aspect-ratio:16/10;border-radius:18px;overflow:hidden;border:1px solid var(--c-line);margin-bottom:18px}
.hero-panel .thumb img{width:100%;height:100%;object-fit:cover}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.stat{background:rgba(27,18,55,.8);border:1px solid var(--c-line-soft);border-radius:14px;padding:12px 10px;text-align:center}
.stat b{display:block;font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;
  background:linear-gradient(135deg,#B8A6FF,#57E6D5);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{display:block;font-size:12px;color:var(--c-text-3);margin-top:2px}
.panel-note{margin-top:16px;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-2)}

/* 卡片通用 */
.card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);transition:transform 280ms var(--ease),box-shadow 280ms var(--ease),border-color 200ms ease-out}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-card-hover);border-color:rgba(160,140,255,.34)}
.thumb{aspect-ratio:16/10;border-radius:16px;overflow:hidden;border:1px solid var(--c-line);background:var(--c-surface-2)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform 500ms var(--ease)}
.card:hover .thumb img{transform:scale(1.04)}
.icon-badge{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  border:1.5px solid rgba(46,216,195,.5);color:var(--c-accent);background:rgba(46,216,195,.08);font-size:15px;font-weight:700}

/* 玩法非对称网格 */
.feature-grid{display:grid;gap:20px}
@media(min-width:1024px){.feature-grid{grid-template-columns:7fr 5fr;align-items:start}}
.feature-lead{padding:24px;display:grid;gap:18px}
@media(min-width:768px){.feature-lead{grid-template-columns:1fr 1fr;align-items:center}}
.feature-lead h3{font-size:20px;font-weight:600;line-height:1.45;margin:14px 0 10px}
.feature-side{display:grid;gap:20px}
@media(min-width:640px) and (max-width:1023px){.feature-side{grid-template-columns:1fr 1fr}}
.feature-side .card{padding:20px}
.feature-side h3{font-size:17px;font-weight:600;line-height:1.45;margin:12px 0 8px}
.card p{color:var(--c-text-2);font-size:15px;line-height:1.85}
.card .link-more{margin-top:14px}

/* 横向卡带 */
.rail-wrap{position:relative}
.rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 4px 18px;margin:0 -4px;
  scrollbar-width:thin;-webkit-overflow-scrolling:touch}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:rgba(160,140,255,.3);border-radius:999px}
.rail::-webkit-scrollbar-track{background:transparent}
.rail > *{flex:0 0 84%;scroll-snap-align:start}
@media(min-width:768px){.rail > *{flex:0 0 46%}}
@media(min-width:1024px){.rail > *{flex:0 0 31.5%}}
.reward-card{position:relative;overflow:hidden;padding:0}
.reward-card .reward-top{height:5px;background:linear-gradient(90deg,#6D4AFF,#2ED8C3)}
.reward-card .reward-body{padding:20px}
.reward-card h3{font-size:18px;font-weight:600;margin:14px 0 8px}
.reward-card .reward-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;gap:10px}
.reward-amount{font-size:15px;font-weight:700;color:var(--c-spark);font-variant-numeric:tabular-nums}

/* 步骤条与进度 */
.steps{display:grid;gap:22px;margin-top:8px}
@media(min-width:768px){.steps{grid-template-columns:repeat(4,1fr);gap:20px}}
.step{position:relative}
@media(min-width:768px){
  .step::before{content:"";position:absolute;top:20px;left:44px;right:-16px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,rgba(109,74,255,.65),rgba(46,216,195,.30))}
  .step:last-child::before{display:none}
}
.step-node{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-size:14px;font-weight:700;
  border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-text-2);position:relative;z-index:1;
  font-variant-numeric:tabular-nums}
.step.done .step-node{background:linear-gradient(135deg,#6D4AFF,#2ED8C3);color:#fff;border-color:transparent}
.step.current .step-node{background:linear-gradient(135deg,#6D4AFF,#4A2FD6);color:#fff;border-color:transparent;
  box-shadow:0 0 0 6px rgba(109,74,255,.20)}
.step h3{font-size:17px;font-weight:600;margin:14px 0 6px}
.step p{font-size:14px;color:var(--c-text-2);line-height:1.8}
.progress-wrap{margin-top:34px;display:grid;gap:12px}
@media(min-width:768px){.progress-wrap{grid-template-columns:1fr auto;align-items:center;gap:18px}}
.progress{height:8px;border-radius:999px;background:rgba(255,255,255,.06);overflow:hidden;position:relative}
.progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#6D4AFF,#2ED8C3);position:relative}
.progress-fill::after{content:"";position:absolute;right:0;top:50%;transform:translate(50%,-50%);width:12px;height:12px;
  border-radius:50%;background:var(--c-spark);box-shadow:0 0 12px 2px rgba(255,184,77,.55)}

/* CTA 面板 */
.cta-band{border-radius:var(--r-lg);padding:26px;display:grid;gap:20px;align-items:center}
@media(min-width:768px){.cta-band{grid-template-columns:1fr auto;padding:34px 38px}}
.cta-band h2{font-size:22px;font-weight:700;line-height:1.35}
@media(min-width:1024px){.cta-band h2{font-size:27px}}
.cta-band p{color:var(--c-text-2);font-size:15px;margin-top:8px;max-width:64ch}
.cta-band-primary{background:linear-gradient(120deg,rgba(109,74,255,.28),rgba(46,216,195,.14));border:1px solid rgba(160,140,255,.28)}
.cta-band-outline{background:rgba(22,16,51,.72);border:1.5px solid rgba(46,216,195,.42)}

/* 排行 */
.rank-list{display:grid;gap:10px}
.rank-item{display:grid;grid-template-columns:32px 1fr auto;gap:14px;align-items:center;padding:13px 16px;
  border-radius:14px;border:1px solid var(--c-line-soft);background:rgba(34,24,71,.5);
  transition:background-color 200ms ease-out,transform 280ms var(--ease)}
.rank-item:hover{background:rgba(34,24,71,.92);transform:translateX(4px)}
.rank-no{font-size:15px;font-weight:700;color:var(--c-text-3);font-variant-numeric:tabular-nums;text-align:center}
.rank-no.top{color:var(--c-spark)}
.rank-title{font-size:15px;font-weight:600}
.rank-bar{height:5px;border-radius:999px;background:rgba(255,255,255,.07);margin-top:9px;overflow:hidden}
.rank-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#6D4AFF,#2ED8C3)}
.rank-num{font-size:13.5px;color:var(--c-text-3);font-variant-numeric:tabular-nums;white-space:nowrap}
.live-bar{display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding:14px 18px;border-radius:14px;
  border:1px solid var(--c-line);background:rgba(27,18,55,.72);margin-bottom:20px;font-size:14px;color:var(--c-text-2)}

/* 资讯列表 */
.news-grid{display:grid;gap:20px}
@media(min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{display:flex;flex-direction:column;padding:16px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);color:var(--c-text);
  transition:transform 280ms var(--ease),box-shadow 280ms var(--ease),border-color 200ms ease-out}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-card-hover);border-color:rgba(160,140,255,.34)}
.news-card:hover .thumb img{transform:scale(1.04)}
.news-body{display:flex;flex-direction:column;flex:1;padding-top:14px}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px}
.news-time{font-size:12.5px;color:var(--c-text-3);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.news-title{font-size:17px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-sum{margin-top:8px;font-size:14px;line-height:1.8;color:var(--c-text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .link-more{margin-top:14px}
@media(min-width:1024px){
  .news-card.is-lead{grid-column:span 2;display:grid;grid-template-columns:1.05fr 1fr;gap:20px;align-items:stretch}
  .news-card.is-lead .thumb{aspect-ratio:auto;height:100%;min-height:200px}
  .news-card.is-lead .news-body{padding-top:0;justify-content:center}
  .news-card.is-lead .news-title{font-size:21px;-webkit-line-clamp:3}
  .news-card.is-lead .news-sum{-webkit-line-clamp:3}
}
.empty-state{display:grid;place-items:center;gap:12px;text-align:center;padding:56px 20px;border-radius:var(--r-card);
  border:1px dashed var(--c-line);background:rgba(27,18,55,.5);color:var(--c-text-2)}
.empty-state .empty-icon{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--c-line);color:var(--c-accent);font-size:18px}

/* FAQ */
.faq-grid{display:grid;gap:14px}
@media(min-width:1024px){.faq-grid{grid-template-columns:repeat(2,1fr);gap:16px;align-items:start}}
.faq-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:16px;overflow:hidden;
  transition:border-color 200ms ease-out,background-color 200ms ease-out}
.faq-item.open{border-color:rgba(46,216,195,.4);background:rgba(34,24,71,.72)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 20px;
  font-size:16px;font-weight:600;text-align:left;color:var(--c-text);line-height:1.5}
.faq-q:hover{color:#fff}
.faq-arrow{flex:0 0 auto;width:20px;height:20px;color:var(--c-accent);transition:transform .3s var(--ease)}
.faq-item.open .faq-arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;opacity:0;padding:0 20px;
  transition:max-height .32s var(--ease),opacity .28s ease-out,padding .3s var(--ease)}
.faq-item.open .faq-a{max-height:340px;opacity:1;padding:0 20px 20px}
.faq-a p{padding-top:14px;border-top:1px solid var(--c-line-soft);font-size:14.5px;color:var(--c-text-2);line-height:1.85}

/* 页脚 */
.site-footer{margin-top:40px;background:var(--c-bg-soft);border-top:1px solid var(--c-line);position:relative;z-index:1}
.footer-main{display:grid;gap:30px;padding:56px 0 34px}
@media(min-width:640px){.footer-main{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-main{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}}
.footer-brand p{margin-top:14px;font-size:14px;color:var(--c-text-2);line-height:1.85;max-width:40ch}
.footer-social{display:flex;gap:10px;margin-top:16px}
.footer-social a{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--c-line);color:var(--c-text-2);transition:border-color 200ms ease-out,color 200ms ease-out,transform 280ms var(--ease)}
.footer-social a:hover{border-color:var(--c-accent);color:var(--c-accent);transform:translateY(-2px)}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:14px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:var(--c-text-2);transition:color 200ms ease-out}
.footer-col a:hover{color:var(--c-accent)}
.subscribe{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.subscribe input{flex:1 1 160px;height:44px;padding:0 14px;border-radius:12px;font-size:14px;
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-text)}
.subscribe input::placeholder{color:var(--c-text-3)}
.subscribe input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(46,216,195,.14)}
.subscribe input.error{border-color:var(--warn)}
.form-hint{margin-top:8px;font-size:12.5px;color:var(--c-text-3)}
.form-hint.error{color:var(--warn)}
.footer-bottom{border-top:1px solid var(--c-line-soft);padding:20px 0 28px;text-align:center;
  font-size:12.5px;color:var(--c-text-3);line-height:1.9}
.footer-bottom a{color:var(--c-text-3)}
.footer-bottom a:hover{color:var(--c-accent)}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: article */
:root{
  --c-primary:#6D4AFF;
  --c-primary-deep:#4A2FD6;
  --c-accent:#2ED8C3;
  --c-spark:#FFB84D;
  --c-bg:#0E0A1F;
  --c-bg-soft:#161033;
  --c-surface:#1B1237;
  --c-surface-2:#221847;
  --c-line:rgba(160,140,255,0.18);
  --c-line-soft:rgba(255,255,255,0.08);
  --c-text:#EDE9FF;
  --c-text-2:#A79FD0;
  --c-text-3:#7A72A6;
  --c-success:#35D07F;
  --c-warn:#FF7A6B;
  --r-sm:10px;
  --r-btn:12px;
  --r-card:20px;
  --r-panel:28px;
  --sh-card:0 1px 0 rgba(255,255,255,0.04) inset, 0 18px 40px -24px rgba(80,50,220,0.55);
  --sh-card-hover:0 26px 60px -28px rgba(110,74,255,0.7);
  --sh-cta:0 14px 32px -14px rgba(109,74,255,0.85);
  --ease:280ms cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  color:var(--c-text);
  background-color:var(--c-bg);
  background-image:
    radial-gradient(900px 520px at 12% -6%, rgba(109,74,255,0.16), transparent 62%),
    radial-gradient(760px 460px at 92% 4%, rgba(46,216,195,0.09), transparent 60%),
    linear-gradient(180deg, rgba(27,18,55,0.85) 0%, rgba(14,10,31,0.98) 42%, #0E0A1F 100%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  line-height:1.8;
  font-size:16px;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    radial-gradient(1.4px 1.4px at 8% 16%, rgba(255,255,255,0.30) 50%, transparent 51%),
    radial-gradient(1.2px 1.2px at 22% 62%, rgba(255,255,255,0.22) 50%, transparent 51%),
    radial-gradient(1.6px 1.6px at 38% 24%, rgba(46,216,195,0.28) 50%, transparent 51%),
    radial-gradient(1.2px 1.2px at 54% 78%, rgba(255,255,255,0.20) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 68% 12%, rgba(255,184,77,0.24) 50%, transparent 51%),
    radial-gradient(1.2px 1.2px at 82% 54%, rgba(255,255,255,0.22) 50%, transparent 51%),
    radial-gradient(1.6px 1.6px at 92% 30%, rgba(109,74,255,0.34) 50%, transparent 51%);
  opacity:0.6;
}
img{max-width:100%;display:block;border-radius:16px;}
a{color:var(--c-accent);text-decoration:none;text-underline-offset:4px;}
a:hover{text-decoration:underline;}
button,input{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:#fff;letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;}
li{list-style:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;position:relative;z-index:2;}
@media(min-width:768px){.container{padding:0 32px;}}

/* ============ Header / Nav ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(14,10,31,0.55);
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),backdrop-filter var(--ease);
}
.site-header.is-scrolled{
  background:rgba(14,10,31,0.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--c-line-soft);
}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:11px;background:linear-gradient(140deg,rgba(109,74,255,0.32),rgba(46,216,195,0.18));border:1px solid var(--c-line);}
.brand-text{font-size:17px;font-weight:700;letter-spacing:0.01em;line-height:1.1;display:inline-flex;flex-direction:column;}
.brand-sub{font-size:11px;font-weight:500;color:var(--c-text-2);letter-spacing:0.14em;margin-top:1px;}
.nav-main{display:none;align-items:center;gap:4px;margin-left:12px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 12px;
  font-size:14px;color:var(--c-text-2);border-radius:10px;transition:color 200ms ease-out,transform 200ms ease-out,background 200ms ease-out;
}
.nav-link:hover{color:#fff;background:rgba(109,74,255,0.12);text-decoration:none;transform:translateY(-1px);}
.nav-link.active{color:#fff;font-weight:600;}
.nav-link.active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:999px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.search-box{position:relative;display:none;}
.search-box input{
  width:250px;height:42px;border-radius:var(--r-btn);border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-text);padding:0 38px 0 38px;font-size:14px;
  transition:border-color 200ms ease-out,box-shadow 200ms ease-out;
}
.search-box input::placeholder{color:var(--c-text-3);}
.search-box input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(46,216,195,0.18);}
.search-box .s-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--c-text-3);pointer-events:none;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:14px;font-weight:600;cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),background 200ms ease-out,color 200ms ease-out,border-color 200ms ease-out,filter 200ms ease-out;
}
.btn:hover{text-decoration:none;}
.btn-primary{color:#fff;background:linear-gradient(135deg,var(--c-primary) 0%,#8A5CFF 52%,var(--c-spark) 100%);box-shadow:var(--sh-cta);}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(1px);}
.btn-second{color:var(--c-accent);background:transparent;border:1.5px solid var(--c-accent);}
.btn-second:hover{background:rgba(46,216,195,0.10);transform:translateY(-2px);}
.btn-ghost{color:var(--c-text-2);background:transparent;border:1px solid var(--c-line);}
.btn-ghost:hover{color:#fff;border-color:var(--c-accent);background:rgba(46,216,195,0.08);}
.btn-sm{height:38px;padding:0 16px;font-size:13px;}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--c-accent);font-size:14px;font-weight:600;height:38px;}
.btn-text svg{transition:transform var(--ease);}
.btn-text:hover svg{transform:translateX(3px);}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;
  border-radius:var(--r-btn);border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-text);cursor:pointer;
}
.menu-toggle:hover{border-color:var(--c-accent);}
@media(min-width:1024px){
  .nav-main{display:flex;}
  .search-box{display:block;}
  .menu-toggle{display:none;}
}
@media(min-width:1024px){.header-inner{height:78px;}}
.drawer-mask{
  position:fixed;inset:0;background:rgba(8,5,20,0.7);opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);z-index:70;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(86vw,340px);
  background:var(--c-bg-soft);border-left:1px solid var(--c-line);
  transform:translateX(102%);transition:transform var(--ease);z-index:80;
  padding:22px 20px 32px;overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-text);cursor:pointer;}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:22px;}
.drawer-nav a{display:flex;align-items:center;min-height:46px;padding:0 12px;border-radius:12px;color:var(--c-text-2);font-size:15px;}
.drawer-nav a:hover,.drawer-nav a.active{background:rgba(109,74,255,0.14);color:#fff;text-decoration:none;}
.drawer .search-box{display:block;margin-bottom:16px;}
.drawer .search-box input{width:100%;}
.drawer .btn{width:100%;}

/* ============ Article hero ============ */
.article-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line-soft);}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(14,10,31,0.80) 0%,rgba(14,10,31,0.93) 62%,rgba(14,10,31,1) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:0.5;
}
.article-hero .container{position:relative;padding-top:30px;padding-bottom:44px;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);letter-spacing:0.02em;margin-bottom:22px;}
.crumb a{color:var(--c-text-3);}
.crumb a:hover{color:var(--c-accent);}
.crumb .sep{color:var(--c-text-3);opacity:0.7;}
.crumb .now{color:var(--c-text-2);}
.article-title{font-size:30px;line-height:1.28;font-weight:700;max-width:900px;letter-spacing:-0.02em;}
@media(min-width:768px){.article-title{font-size:40px;line-height:1.22;}}
@media(min-width:1280px){.article-title{font-size:46px;}}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  font-size:12px;letter-spacing:0.02em;border:1px solid var(--c-line);color:var(--c-text-2);background:rgba(27,18,55,0.7);
}
.tag-accent{border-color:rgba(46,216,195,0.5);color:var(--c-accent);background:rgba(46,216,195,0.08);}
.tag-solid{background:linear-gradient(135deg,var(--c-primary),var(--c-primary-deep));border-color:transparent;color:#fff;}
.tag-spark{border-color:rgba(255,184,77,0.45);color:var(--c-spark);background:rgba(255,184,77,0.10);}
.meta-num{font-variant-numeric:tabular-nums;font-size:13px;color:var(--c-text-3);}

/* ============ Article body ============ */
.article-wrap{padding:48px 0 8px;}
@media(min-width:1024px){.article-wrap{padding:72px 0 12px;}}
.article-layout{display:grid;grid-template-columns:1fr;gap:40px;}
@media(min-width:1024px){.article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start;}}
.article-mainbox{
  background:linear-gradient(180deg,rgba(27,18,55,0.62),rgba(22,16,51,0.38));
  border:1px solid var(--c-line);border-radius:var(--r-panel);
  padding:26px 20px 30px;
  box-shadow:var(--sh-card);
}
@media(min-width:768px){.article-mainbox{padding:40px 44px 44px;}}
.article-content{max-width:820px;font-size:16px;line-height:1.9;color:var(--c-text);}
.article-content>*+*{margin-top:1.1em;}
.article-content p{color:#DED8FA;line-height:1.9;}
.article-content h2{font-size:24px;line-height:1.35;font-weight:700;margin-top:40px;padding-left:14px;position:relative;}
.article-content h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:999px;background:linear-gradient(180deg,var(--c-primary),var(--c-accent));}
.article-content h3{font-size:19px;line-height:1.45;font-weight:600;margin-top:28px;color:#fff;}
.article-content h4{font-size:17px;margin-top:22px;color:#fff;font-weight:600;}
.article-content a{color:var(--c-accent);text-decoration:underline;text-decoration-thickness:1px;}
.article-content ul,.article-content ol{padding-left:1.5em;color:#DED8FA;}
.article-content ul li{list-style:disc;margin:8px 0;}
.article-content ol li{list-style:decimal;margin:8px 0;}
.article-content blockquote{
  margin:1.4em 0;padding:16px 20px;border-left:3px solid var(--c-accent);
  background:rgba(46,216,195,0.06);border-radius:0 14px 14px 0;color:var(--c-text-2);
}
.article-content img{border-radius:16px;border:1px solid var(--c-line);margin:1.4em 0 0.6em;}
.article-content figure{margin:1.5em 0;}
.article-content figcaption{text-align:center;font-size:13px;color:var(--c-text-3);margin-top:8px;}
.article-content table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:15px;border:1px solid var(--c-line);border-radius:12px;overflow:hidden;}
.article-content th{background:var(--c-surface-2);color:#fff;font-weight:600;text-align:left;}
.article-content th,.article-content td{padding:12px 14px;border-bottom:1px solid var(--c-line-soft);}
.article-content tr:last-child td{border-bottom:none;}
.article-content code{background:#120C28;color:#C9BDFF;padding:2px 7px;border-radius:8px;font-size:14px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;}
.article-content pre{background:#120C28;border:1px solid var(--c-line);border-radius:12px;padding:18px;overflow-x:auto;}
.article-content pre code{background:transparent;padding:0;}
.article-content hr{border:none;border-top:1px solid var(--c-line-soft);margin:2em 0;}
.empty-state{text-align:center;padding:56px 20px;}
.empty-state .ico{width:56px;height:56px;margin:0 auto 18px;border-radius:999px;display:flex;align-items:center;justify-content:center;background:var(--c-surface-2);border:1px solid var(--c-line);color:var(--c-accent);}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--c-text-2);margin-bottom:22px;}

/* ============ Sidebar ============ */
.article-side{display:none;}
@media(min-width:1024px){.article-side{display:block;position:sticky;top:100px;}}
.side-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-card);}
.side-card+.side-card{margin-top:20px;}
.side-card h3{font-size:15px;font-weight:600;letter-spacing:0.02em;display:flex;align-items:center;gap:8px;margin-bottom:14px;}
.side-card h3 .dot{width:7px;height:7px;border-radius:999px;background:var(--c-accent);}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow-y:auto;}
.toc-list a{display:block;padding:8px 10px;border-radius:10px;font-size:14px;color:var(--c-text-2);border-left:2px solid transparent;}
.toc-list a:hover{background:rgba(109,74,255,0.12);color:#fff;text-decoration:none;border-left-color:var(--c-primary);}
.toc-list a.sub{padding-left:22px;font-size:13px;color:var(--c-text-3);}
.side-links{display:flex;flex-direction:column;gap:8px;}
.side-links a{display:flex;align-items:center;justify-content:space-between;font-size:14px;color:var(--c-text-2);padding:10px 12px;border-radius:12px;border:1px solid var(--c-line-soft);}
.side-links a:hover{color:#fff;border-color:var(--c-accent);background:rgba(46,216,195,0.07);text-decoration:none;}
.side-note{font-size:13px;color:var(--c-text-3);line-height:1.8;}

/* ============ Sections ============ */
.section{padding:60px 0;}
@media(min-width:1024px){.section{padding:88px 0;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:34px;}
.section-head h2{font-size:26px;line-height:1.3;}
@media(min-width:1024px){.section-head h2{font-size:32px;}}
.section-head p{color:var(--c-text-2);font-size:15px;margin-top:10px;max-width:62ch;}
.divider{height:1px;background:var(--c-line-soft);border:none;margin:0;}

/* related */
.back-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:34px 0 30px;}
.related-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:768px){.related-grid{grid-template-columns:repeat(3,1fr);}}
.rel-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px;display:flex;flex-direction:column;gap:12px;box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-card-hover);border-color:rgba(46,216,195,0.4);}
.rel-card h3{font-size:17px;}
.rel-card p{font-size:14px;color:var(--c-text-2);line-height:1.8;}
.rel-card .thumb{aspect-ratio:16/10;border-radius:16px;overflow:hidden;border:1px solid var(--c-line);background:var(--c-surface-2);}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;}

/* CTA band */
.cta-band{
  border:1px solid var(--c-line);border-radius:var(--r-panel);
  background:linear-gradient(120deg,rgba(27,18,55,0.95),rgba(22,16,51,0.9)),radial-gradient(600px 260px at 88% 0%,rgba(46,216,195,0.16),transparent 65%);
  padding:32px 24px;display:flex;flex-wrap:wrap;gap:22px;align-items:center;justify-content:space-between;
}
@media(min-width:768px){.cta-band{padding:40px 44px;}}
.cta-band h2{font-size:23px;line-height:1.35;}
@media(min-width:1024px){.cta-band h2{font-size:28px;}}
.cta-band p{color:var(--c-text-2);font-size:15px;margin-top:10px;max-width:56ch;}

/* FAQ */
.faq-grid{display:grid;grid-template-columns:1fr;gap:14px;}
@media(min-width:1024px){.faq-grid{grid-template-columns:repeat(2,1fr);gap:16px;}}
.faq-item{border:1px solid var(--c-line);border-radius:16px;background:var(--c-surface);overflow:hidden;transition:border-color 200ms ease-out,box-shadow var(--ease);}
.faq-item.open{border-color:rgba(46,216,195,0.45);box-shadow:var(--sh-card);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:transparent;border:none;color:#fff;font-size:16px;font-weight:600;
  text-align:left;padding:18px 20px;cursor:pointer;min-height:44px;
}
.faq-q .chev{flex:none;color:var(--c-accent);transition:transform var(--ease);}
.faq-item.open .chev{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 300ms cubic-bezier(.22,.61,.36,1);}
.faq-a-inner{padding:0 20px 20px;border-top:1px solid var(--c-line-soft);color:var(--c-text-2);font-size:14.5px;line-height:1.85;margin-top:0;padding-top:16px;}

/* Footer */
.site-footer{background:var(--c-bg-soft);border-top:1px solid var(--c-line);margin-top:24px;position:relative;z-index:2;}
.footer-main{display:grid;grid-template-columns:1fr;gap:32px;padding:52px 0 34px;}
@media(min-width:640px){.footer-main{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.footer-main{grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;}}
.footer-brand p{color:var(--c-text-2);font-size:14px;line-height:1.85;margin:16px 0 18px;max-width:38ch;}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  width:38px;height:38px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);color:var(--c-text-2);background:rgba(27,18,55,0.6);
  transition:color 200ms ease-out,border-color 200ms ease-out,transform var(--ease);
}
.footer-social a:hover{color:var(--c-accent);border-color:var(--c-accent);transform:translateY(-2px);text-decoration:none;}
.footer-col h3{font-size:15px;font-weight:600;margin-bottom:16px;color:#fff;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{color:var(--c-text-2);font-size:14px;}
.footer-col ul a:hover{color:var(--c-accent);text-decoration:none;}
.footer-sub p{color:var(--c-text-2);font-size:14px;margin-bottom:14px;}
.sub-form{display:flex;gap:10px;flex-wrap:wrap;}
.sub-form input{
  flex:1 1 180px;height:44px;border-radius:12px;border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-text);padding:0 14px;font-size:14px;
  transition:border-color 200ms ease-out,box-shadow 200ms ease-out;
}
.sub-form input::placeholder{color:var(--c-text-3);}
.sub-form input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(46,216,195,0.18);}
.sub-form input.error{border-color:var(--c-warn);box-shadow:0 0 0 3px rgba(255,122,107,0.18);}
.form-msg{width:100%;font-size:13px;color:var(--c-warn);margin-top:6px;display:none;}
.form-msg.show{display:block;}
.form-msg.ok{color:var(--c-success);}
.footer-bottom{border-top:1px solid var(--c-line-soft);padding:18px 0 24px;text-align:center;font-size:12.5px;color:var(--c-text-3);letter-spacing:0.02em;}
.footer-bottom span{color:var(--c-text-3);}
@media(max-width:520px){
  .article-title{font-size:27px;}
  .header-inner{height:66px;}
  .brand-text{font-size:15.5px;}
}

/* roulang page: category1 */
:root{
    --c-primary:#6D4AFF;
    --c-primary-deep:#4A2FD6;
    --c-accent:#2ED8C3;
    --c-spark:#FFB84D;
    --c-bg:#0E0A1F;
    --c-bg-soft:#161033;
    --c-surface:#1B1237;
    --c-surface-2:#221847;
    --c-line:rgba(160,140,255,.18);
    --c-line-soft:rgba(255,255,255,.08);
    --c-text:#EDE9FF;
    --c-text-2:#A79FD0;
    --c-text-3:#7A72A6;
    --c-ok:#35D07F;
    --c-warn:#FF7A6B;
    --r-sm:10px;
    --r-btn:12px;
    --r-card:20px;
    --r-lg:28px;
    --shadow-card:0 1px 0 rgba(255,255,255,.04) inset, 0 18px 40px -24px rgba(80,50,220,.55);
    --shadow-card-hover:0 26px 60px -28px rgba(110,74,255,.7);
    --shadow-cta:0 14px 32px -14px rgba(109,74,255,.85);
    --container:1240px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
    background-color:var(--c-bg);
    background-image:
      radial-gradient(circle at 14% 4%, rgba(109,74,255,.20), transparent 42%),
      radial-gradient(circle at 88% 10%, rgba(46,216,195,.10), transparent 38%),
      linear-gradient(180deg, rgba(109,74,255,.05) 0%, rgba(14,10,31,0) 32%);
    background-repeat:no-repeat;
    color:var(--c-text);
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  .starfield{
    position:fixed;inset:0;pointer-events:none;z-index:0;
    background-image:
      radial-gradient(1.6px 1.6px at 12% 18%, rgba(255,255,255,.32), transparent 60%),
      radial-gradient(1.4px 1.4px at 27% 62%, rgba(255,255,255,.24), transparent 60%),
      radial-gradient(1.8px 1.8px at 43% 24%, rgba(160,140,255,.34), transparent 60%),
      radial-gradient(1.2px 1.2px at 58% 78%, rgba(255,255,255,.22), transparent 60%),
      radial-gradient(1.5px 1.5px at 71% 34%, rgba(46,216,195,.30), transparent 60%),
      radial-gradient(1.3px 1.3px at 84% 66%, rgba(255,255,255,.20), transparent 60%),
      radial-gradient(1.7px 1.7px at 92% 22%, rgba(160,140,255,.26), transparent 60%),
      radial-gradient(1.2px 1.2px at 31% 88%, rgba(255,255,255,.18), transparent 60%);
    opacity:.9;
  }
  img{max-width:100%;display:block;}
  a{color:var(--c-accent);text-decoration:none;text-underline-offset:4px;transition:color .2s ease-out;}
  a:hover{color:#7CEBDD;text-decoration:underline;}
  button{font-family:inherit;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul,ol{padding:0;list-style:none;}
  h1{font-size:clamp(30px,4.6vw,52px);font-weight:700;line-height:1.18;letter-spacing:-.02em;}
  h2{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.3;}
  h3{font-size:19px;font-weight:600;line-height:1.45;}
  p{color:var(--c-text-2);}
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px;}
  @media(min-width:768px){.container{padding:0 32px;}}
  main{position:relative;z-index:1;}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

  /* ---------- 按钮 ---------- */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;transition:transform .28s cubic-bezier(.22,.61,.36,1),box-shadow .28s cubic-bezier(.22,.61,.36,1),background-color .2s ease-out,filter .2s ease-out,color .2s ease-out;}
  .btn-primary{background-image:linear-gradient(135deg,var(--c-primary) 0%,var(--c-primary-deep) 58%,var(--c-spark) 130%);color:#fff;box-shadow:var(--shadow-cta);}
  .btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);text-decoration:none;color:#fff;}
  .btn-primary:active{transform:translateY(1px);}
  .btn-ghost{background:transparent;border-color:rgba(46,216,195,.55);color:var(--c-accent);}
  .btn-ghost:hover{background:rgba(46,216,195,.10);transform:translateY(-2px);text-decoration:none;color:var(--c-accent);}
  .btn-ghost:active{transform:translateY(1px);}
  .btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--c-accent);font-size:14px;font-weight:600;background:none;border:0;padding:6px 0;cursor:pointer;}
  .btn-text svg{transition:transform .28s cubic-bezier(.22,.61,.36,1);}
  .btn-text:hover svg{transform:translateX(3px);}
  .btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
  .btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}

  /* ---------- 徽章 / 标签 ---------- */
  .badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:999px;font-size:12.5px;letter-spacing:.02em;font-variant-numeric:tabular-nums;white-space:nowrap;}
  .badge-line{border:1px solid var(--c-line);color:var(--c-text-2);background:rgba(27,18,55,.7);}
  .badge-accent{border:1px solid rgba(46,216,195,.5);color:var(--c-accent);background:rgba(46,216,195,.08);}
  .badge-primary{background:rgba(109,74,255,.18);border:1px solid rgba(109,74,255,.45);color:#C9BCFF;}
  .badge-spark{background:linear-gradient(135deg,rgba(255,184,77,.22),rgba(255,184,77,.08));border:1px solid rgba(255,184,77,.55);color:var(--c-spark);}

  /* ---------- 头部导航 ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:rgba(14,10,31,.62);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--c-line-soft);transition:background-color .25s ease-out;}
  .site-header.is-scrolled{background:rgba(14,10,31,.86);}
  .header-inner{display:flex;align-items:center;gap:18px;min-height:68px;}
  .brand{display:flex;align-items:center;gap:10px;color:var(--c-text);text-decoration:none;flex-shrink:0;}
  .brand:hover{text-decoration:none;color:var(--c-text);}
  .brand-mark{display:inline-flex;width:36px;height:36px;border-radius:12px;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(109,74,255,.35),rgba(46,216,195,.18));border:1px solid var(--c-line);}
  .brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;line-height:1.1;}
  .brand-sub{display:block;font-size:11px;font-weight:500;color:var(--c-text-3);letter-spacing:.08em;}
  .nav-main{display:none;align-items:center;gap:26px;margin-left:10px;}
  .nav-link{position:relative;color:var(--c-text-2);font-size:14.5px;font-weight:500;padding:6px 0;transition:color .2s ease-out,transform .28s cubic-bezier(.22,.61,.36,1);}
  .nav-link:hover{color:var(--c-text);transform:translateY(-1px);text-decoration:none;}
  .nav-link.active{color:#fff;}
  .nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:999px;background-image:linear-gradient(90deg,var(--c-primary),var(--c-accent));}
  .header-tools{display:flex;align-items:center;gap:12px;margin-left:auto;}
  .search-box{display:none;align-items:center;gap:8px;height:40px;padding:0 12px;border-radius:var(--r-btn);background:var(--c-surface);border:1px solid var(--c-line);transition:border-color .2s ease-out,box-shadow .2s ease-out;}
  .search-box:focus-within{border-color:rgba(46,216,195,.7);box-shadow:0 0 0 3px rgba(46,216,195,.14);}
  .search-box svg{flex-shrink:0;color:var(--c-text-3);}
  .search-box input{width:190px;border:0;background:transparent;color:var(--c-text);font-size:14px;outline:none;}
  .search-box input::placeholder{color:var(--c-text-3);}
  .tool-login{display:none;color:var(--c-text-2);font-size:14.5px;font-weight:500;padding:8px 4px;}
  .tool-login:hover{color:#fff;text-decoration:none;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:var(--r-btn);background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-text);cursor:pointer;}
  .nav-toggle:hover{background:var(--c-surface-2);}
  @media(min-width:1024px){
    .nav-main{display:flex;}
    .search-box{display:flex;}
    .tool-login{display:inline-flex;}
    .nav-toggle{display:none;}
  }
  .drawer-mask{position:fixed;inset:0;background:rgba(8,5,20,.7);opacity:0;visibility:hidden;transition:opacity .25s ease-out,visibility .25s;z-index:70;}
  .drawer{position:fixed;top:0;right:0;height:100%;width:86%;max-width:340px;background:var(--c-bg-soft);border-left:1px solid var(--c-line);transform:translateX(100%);transition:transform .3s cubic-bezier(.22,.61,.36,1);z-index:80;padding:22px 20px;overflow-y:auto;display:flex;flex-direction:column;gap:18px;}
  .drawer-open .drawer-mask{opacity:1;visibility:visible;}
  .drawer-open .drawer{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;}
  .drawer-close{width:44px;height:44px;border-radius:var(--r-btn);background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-text);cursor:pointer;}
  .drawer-nav{display:flex;flex-direction:column;gap:4px;}
  .drawer-nav a{display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:var(--r-btn);color:var(--c-text-2);font-size:15px;font-weight:500;}
  .drawer-nav a:hover{background:var(--c-surface);color:#fff;text-decoration:none;}
  .drawer-nav a.active{background:rgba(109,74,255,.18);color:#fff;border:1px solid rgba(109,74,255,.4);}
  .drawer .search-box{display:flex;width:100%;}
  .drawer .search-box input{width:100%;}

  /* ---------- 页头区 ---------- */
  .page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--c-line-soft);padding:52px 0 56px;}
  .page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(120deg,rgba(14,10,31,.9) 12%,rgba(14,10,31,.72) 52%,rgba(74,47,214,.42) 100%),url("/assets/images/backpic/back-2.png");background-size:cover;background-position:center;opacity:.42;}
  .page-hero::after{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 22% 30%, rgba(109,74,255,.30), transparent 46%);}
  .page-hero .container{position:relative;z-index:2;}
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-text-3);margin-bottom:18px;flex-wrap:wrap;}
  .crumb a{color:var(--c-text-3);}
  .crumb a:hover{color:var(--c-accent);}
  .crumb span[aria-current]{color:var(--c-text-2);}
  .page-hero h1{max-width:840px;}
  .hero-lead{margin-top:16px;max-width:660px;font-size:16px;line-height:1.9;color:var(--c-text-2);}
  .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}

  /* ---------- 板块通用 ---------- */
  section{position:relative;}
  .section{padding:60px 0;}
  @media(min-width:1024px){.section{padding:92px 0;}}
  .section-head{max-width:760px;margin-bottom:34px;}
  .section-head .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.14em;color:var(--c-accent);text-transform:uppercase;margin-bottom:12px;}
  .section-head h2{margin-bottom:14px;}
  .section-head p{font-size:15.5px;}
  .divider{height:1px;background:var(--c-line-soft);border:0;margin:0;}

  /* ---------- 流程分节 ---------- */
  .step-row{display:grid;grid-template-columns:1fr;gap:22px;padding:34px 0;}
  @media(min-width:1024px){
    .step-row{grid-template-columns:1fr 460px;gap:56px;padding:52px 0;align-items:center;}
    .step-row.flip .step-index{order:2;}
    .step-row.flip .step-body{order:1;}
  }
  .step-index{display:flex;align-items:flex-start;gap:18px;}
  .step-num{font-size:34px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums;background-image:linear-gradient(135deg,var(--c-primary),var(--c-accent));-webkit-background-clip:text;background-clip:text;color:transparent;letter-spacing:-.02em;}
  .step-index h3{font-size:22px;font-weight:700;}
  .step-index p{margin-top:12px;font-size:15.5px;}
  .point-list{margin-top:18px;display:flex;flex-direction:column;gap:12px;}
  .point-list li{display:flex;gap:10px;font-size:14.8px;color:var(--c-text-2);line-height:1.8;}
  .point-list li::before{content:"";flex-shrink:0;width:6px;height:6px;margin-top:10px;border-radius:999px;background:linear-gradient(135deg,var(--c-primary),var(--c-accent));}
  .step-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--shadow-card);overflow:hidden;transition:transform .28s cubic-bezier(.22,.61,.36,1),box-shadow .28s cubic-bezier(.22,.61,.36,1);}
  .step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);}
  .step-card .thumb{position:relative;width:100%;aspect-ratio:16/10;background:var(--c-surface-2);overflow:hidden;}
  .step-card .thumb img{width:100%;height:100%;object-fit:cover;}
  .step-card .thumb::after{content:"";position:absolute;inset:0;border-bottom:1px solid var(--c-line);}
  .step-card .step-card-body{padding:20px 22px 22px;}
  .step-card h4{font-size:16px;font-weight:600;color:var(--c-text);margin-bottom:8px;}
  .step-card p{font-size:14.5px;line-height:1.8;}

  /* ---------- 场景卡片 ---------- */
  .scene-grid{display:grid;grid-template-columns:1fr;gap:18px;}
  @media(min-width:640px){.scene-grid{grid-template-columns:repeat(2,1fr);}}
  @media(min-width:1024px){.scene-grid{grid-template-columns:repeat(4,1fr);}}
  .scene-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-card);transition:transform .28s cubic-bezier(.22,.61,.36,1),box-shadow .28s cubic-bezier(.22,.61,.36,1),border-color .2s ease-out;display:flex;flex-direction:column;gap:12px;}
  .scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover);border-color:rgba(160,140,255,.34);}
  .icon-ring{width:44px;height:44px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;border:1px solid rgba(46,216,195,.45);background:rgba(46,216,195,.08);color:var(--c-accent);}
  .scene-card h3{font-size:17px;}
  .scene-card p{font-size:14.5px;line-height:1.8;margin-bottom:auto;}

  /* ---------- 数据条 ---------- */
  .stat-band{background:var(--c-bg-soft);border:1px solid var(--c-line);border-radius:var(--r-lg);padding:26px 24px;display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
  @media(min-width:768px){.stat-band{grid-template-columns:repeat(4,1fr);padding:30px 34px;}}
  .stat-item .stat-num{font-size:28px;font-weight:700;font-variant-numeric:tabular-nums;color:#fff;letter-spacing:-.01em;}
  .stat-item .stat-label{margin-top:6px;font-size:13.5px;color:var(--c-text-3);}

  /* ---------- 排查清单 ---------- */
  .check-panel{background:linear-gradient(140deg,rgba(34,24,71,.9),rgba(22,16,51,.9));border:1px solid var(--c-line);border-radius:var(--r-lg);padding:26px;}
  .check-panel ol{counter-reset:chk;display:flex;flex-direction:column;gap:14px;}
  .check-panel li{counter-increment:chk;display:flex;gap:14px;font-size:15px;color:var(--c-text-2);line-height:1.8;}
  .check-panel li::before{content:counter(chk,decimal-leading-zero);font-size:13px;font-weight:700;color:var(--c-accent);font-variant-numeric:tabular-nums;flex-shrink:0;padding-top:3px;}

  /* ---------- FAQ ---------- */
  .faq-grid{display:grid;gap:14px;}
  @media(min-width:1024px){.faq-grid{grid-template-columns:repeat(2,1fr);gap:16px;}}
  .faq-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:16px;overflow:hidden;transition:border-color .2s ease-out,background-color .2s ease-out;}
  .faq-item[open]{background:var(--c-surface-2);border-color:rgba(46,216,195,.4);}
  .faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 20px;font-size:16px;font-weight:600;color:var(--c-text);min-height:56px;}
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary svg{flex-shrink:0;color:var(--c-accent);transition:transform .3s cubic-bezier(.22,.61,.36,1);}
  .faq-item[open] summary svg{transform:rotate(180deg);}
  .faq-answer{padding:0 20px 20px;border-top:1px solid var(--c-line-soft);margin-top:0;padding-top:16px;}
  .faq-answer p{font-size:14.8px;line-height:1.9;}

  /* ---------- CTA ---------- */
  .cta-band{background:linear-gradient(135deg,rgba(27,18,55,.96),rgba(34,24,71,.9));border:1.5px solid rgba(46,216,195,.42);border-radius:var(--r-lg);padding:28px 24px;display:flex;flex-direction:column;gap:20px;align-items:flex-start;}
  @media(min-width:1024px){.cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:38px 44px;gap:36px;}}
  .cta-band h2{font-size:clamp(22px,2.6vw,28px);margin-bottom:10px;}
  .cta-band p{font-size:15px;max-width:640px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex-shrink:0;}
  @media(max-width:639px){.cta-actions{width:100%;}.cta-actions .btn{width:100%;}}

  /* ---------- 页脚 ---------- */
  .site-footer{position:relative;z-index:1;margin-top:40px;background:var(--c-bg-soft);border-top:1px solid var(--c-line);padding:52px 0 0;}
  .footer-main{display:grid;grid-template-columns:1fr;gap:34px;padding-bottom:40px;}
  @media(min-width:768px){.footer-main{grid-template-columns:repeat(2,1fr);}}
  @media(min-width:1024px){.footer-main{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:44px;}}
  .footer-brand p{font-size:14.5px;line-height:1.85;margin-top:16px;max-width:340px;}
  .footer-social{display:flex;gap:10px;margin-top:18px;}
  .footer-social a{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:12px;border:1px solid var(--c-line);color:var(--c-text-2);background:rgba(27,18,55,.7);transition:color .2s ease-out,border-color .2s ease-out,transform .28s cubic-bezier(.22,.61,.36,1);}
  .footer-social a:hover{color:var(--c-accent);border-color:rgba(46,216,195,.5);transform:translateY(-2px);text-decoration:none;}
  .footer-col h3{font-size:14px;font-weight:600;letter-spacing:.06em;color:var(--c-text);margin-bottom:16px;}
  .footer-col ul{display:flex;flex-direction:column;gap:11px;}
  .footer-col a{font-size:14px;color:var(--c-text-2);}
  .footer-col a:hover{color:var(--c-accent);}
  .subscribe-form{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap;}
  .subscribe-form input{flex:1 1 180px;height:44px;padding:0 14px;border-radius:var(--r-btn);background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-text);font-size:14px;outline:none;transition:border-color .2s ease-out,box-shadow .2s ease-out;}
  .subscribe-form input::placeholder{color:var(--c-text-3);}
  .subscribe-form input:focus{border-color:rgba(46,216,195,.7);box-shadow:0 0 0 3px rgba(46,216,195,.14);}
  .subscribe-form input.is-error{border-color:var(--c-warn);}
  .form-hint{font-size:12.5px;color:var(--c-text-3);margin-top:10px;}
  .form-hint.is-error{color:var(--c-warn);}
  .footer-bottom{border-top:1px solid var(--c-line-soft);padding:20px 0;text-align:center;font-size:12.5px;color:var(--c-text-3);}
  .footer-bottom a{color:var(--c-text-3);}
  .footer-bottom a:hover{color:var(--c-accent);}

/* roulang page: category2 */
:root{
  --c-primary:#6D4AFF;
  --c-primary-deep:#4A2FD6;
  --c-accent:#2ED8C3;
  --c-spark:#FFB84D;
  --c-bg:#0E0A1F;
  --c-bg-soft:#161033;
  --c-surface:#1B1237;
  --c-surface-2:#221847;
  --c-line:rgba(160,140,255,.18);
  --c-line-soft:rgba(255,255,255,.08);
  --c-text:#EDE9FF;
  --c-text-2:#A79FD0;
  --c-text-3:#7A72A6;
  --c-ok:#35D07F;
  --c-warn:#FF7A6B;
  --c-info:#5FB8FF;
  --r-sm:10px;
  --r-btn:12px;
  --r-card:20px;
  --r-lg:28px;
  --r-img:16px;
  --sh-card:0 1px 0 rgba(255,255,255,.04) inset, 0 18px 40px -24px rgba(80,50,220,.55);
  --sh-card-hover:0 26px 60px -28px rgba(110,74,255,.7);
  --sh-cta:0 14px 32px -14px rgba(109,74,255,.85);
  --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;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background-color:var(--c-bg);
  background-image:
    radial-gradient(1100px 620px at 12% -10%, rgba(109,74,255,.24), transparent 62%),
    radial-gradient(880px 520px at 88% 2%, rgba(46,216,195,.10), transparent 60%),
    linear-gradient(180deg, rgba(109,74,255,.07) 0%, rgba(14,10,31,0) 34%),
    radial-gradient(2px 2px at 18% 22%, rgba(237,233,255,.28), transparent 60%),
    radial-gradient(2px 2px at 72% 12%, rgba(46,216,195,.26), transparent 60%),
    radial-gradient(1.6px 1.6px at 46% 62%, rgba(237,233,255,.20), transparent 60%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-accent);text-decoration:none;text-underline-offset:3px;}
a:hover{text-decoration:underline;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-0.01em;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
input,button{font-size:16px;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px;}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:768px){.container{padding-left:32px;padding-right:32px;}}
@media (min-width:1400px){.container{max-width:1360px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background 200ms ease-out,border-color 200ms ease-out,backdrop-filter 200ms ease-out;
}
.site-header.is-stuck{
  background:rgba(14,10,31,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line-soft);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:72px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-text);text-decoration:none;flex:0 0 auto;}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(109,74,255,.35),rgba(46,216,195,.20));
  border:1px solid var(--c-line);
}
.brand-text{font-size:17px;font-weight:700;line-height:1.2;white-space:nowrap;}
.brand-sub{
  display:block;
  font-size:11px;
  font-weight:500;
  color:var(--c-text-3);
  letter-spacing:.06em;
  margin-top:1px;
}
.nav-main{
  display:none;
  align-items:center;
  gap:6px;
  margin-left:8px;
  flex:1 1 auto;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 12px;
  border-radius:10px;
  color:var(--c-text-2);
  font-size:15px;
  text-decoration:none;
  transition:color 200ms ease-out,transform 280ms var(--ease);
}
.nav-link:hover{color:var(--c-text);text-decoration:none;transform:translateY(-1px);}
.nav-link.active{color:var(--c-text);font-weight:600;}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:4px;
  height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
}
.header-right{display:flex;align-items:center;gap:10px;margin-left:auto;}
.search-box{
  display:none;
  align-items:center;
  gap:8px;
  width:250px;
  height:42px;
  padding:0 12px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  transition:border-color 200ms ease-out,box-shadow 200ms ease-out;
}
.search-box:focus-within{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(46,216,195,.16);}
.search-box svg{color:var(--c-text-3);flex:0 0 auto;}
.search-box input{
  flex:1 1 auto;min-width:0;
  background:transparent;border:0;outline:none;
  color:var(--c-text);font-size:14px;
}
.search-box input::placeholder{color:var(--c-text-3);}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  min-height:44px;padding:0 18px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  text-decoration:none;
  white-space:nowrap;
  transition:transform 280ms var(--ease),box-shadow 280ms var(--ease),background-color 200ms ease-out,color 200ms ease-out,border-color 200ms ease-out,filter 200ms ease-out;
}
.btn:hover{text-decoration:none;}
.btn-primary{
  background:linear-gradient(135deg,var(--c-primary) 0%,var(--c-primary-deep) 55%,var(--c-spark) 140%);
  color:#fff;
  box-shadow:var(--sh-cta);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(1px);}
.btn-outline{
  background:transparent;
  border:1.5px solid var(--c-accent);
  color:var(--c-accent);
}
.btn-outline:hover{background:rgba(46,216,195,.10);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;color:var(--c-text-2);border-color:transparent;
  min-height:44px;padding:0 12px;
}
.btn-ghost:hover{color:var(--c-text);background:rgba(255,255,255,.05);text-decoration:none;}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}
.header-cta{display:none;}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  color:var(--c-text);
}
.menu-toggle:hover{border-color:var(--c-accent);}
@media (min-width:1024px){
  .nav-main{display:flex;}
  .search-box{display:flex;}
  .header-cta{display:inline-flex;}
  .menu-toggle{display:none;}
}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:80;
  background:rgba(8,5,20,.7);
  opacity:0;visibility:hidden;
  transition:opacity 240ms ease-out,visibility 240ms ease-out;
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;
  width:min(88vw,360px);
  padding:22px 20px 32px;
  background:var(--c-bg-soft);
  border-left:1px solid var(--c-line);
  transform:translateX(102%);
  transition:transform 320ms var(--ease);
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px;}
.drawer-close{
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-btn);color:var(--c-text);
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin-bottom:18px;}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;
  color:var(--c-text-2);font-size:16px;border-radius:var(--r-btn);text-decoration:none;
  border:1px solid transparent;
}
.drawer-nav a:hover,.drawer-nav a.active{
  color:var(--c-text);background:var(--c-surface);border-color:var(--c-line);
}
.drawer .search-box{display:flex;width:100%;margin-bottom:16px;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  padding:52px 0 44px;
  overflow:hidden;
  border-bottom:1px solid var(--c-line-soft);
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(14,10,31,.55),rgba(14,10,31,.92)),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  opacity:.34;
  z-index:-1;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;z-index:-1;
  background:radial-gradient(760px 380px at 18% 0%, rgba(109,74,255,.28), transparent 66%);
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-text-3);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--c-text-3);text-decoration:none;}
.breadcrumb a:hover{color:var(--c-accent);}
.breadcrumb span{color:var(--c-text-2);}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:28px;padding:0 12px;margin-bottom:16px;
  border-radius:999px;
  background:rgba(46,216,195,.10);
  border:1px solid rgba(46,216,195,.35);
  color:var(--c-accent);
  font-size:12.5px;letter-spacing:.02em;
}
.page-hero h1{
  font-size:30px;
  line-height:1.22;
  letter-spacing:-0.02em;
  max-width:20ch;
  margin-bottom:16px;
}
.hero-lead{
  max-width:62ch;
  color:var(--c-text-2);
  font-size:15.5px;
  margin-bottom:24px;
}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 13px;
  border-radius:999px;
  font-size:12.5px;
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.badge-line{border:1px solid var(--c-line);color:var(--c-text-2);background:rgba(255,255,255,.03);}
.badge-fill{background:linear-gradient(135deg,rgba(109,74,255,.9),rgba(74,47,214,.9));color:#fff;}
.badge-accent{border:1px solid rgba(46,216,195,.45);color:var(--c-accent);background:rgba(46,216,195,.08);}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-stat-strip{
  display:grid;grid-template-columns:1fr;gap:12px;
  margin-top:32px;
}
.stat-cell{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:16px 18px;
  box-shadow:var(--sh-card);
}
.stat-cell .stat-num{
  font-size:26px;font-weight:700;line-height:1.2;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(120deg,#fff,#B7A6FF 60%,var(--c-accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-cell .stat-label{font-size:13px;color:var(--c-text-3);margin-top:2px;}
@media (min-width:640px){
  .hero-stat-strip{grid-template-columns:repeat(3,1fr);}
}
@media (min-width:1024px){
  .page-hero{padding:68px 0 60px;}
  .page-hero h1{font-size:46px;max-width:22ch;}
  .hero-lead{font-size:16.5px;}
}

/* ---------- sections ---------- */
.section{padding:56px 0;}
.section-alt{background:linear-gradient(180deg,rgba(22,16,51,.55),rgba(14,10,31,0));}
.section-head{margin-bottom:28px;}
.section-head h2{font-size:24px;line-height:1.3;margin-bottom:10px;}
.section-head p{color:var(--c-text-2);max-width:70ch;margin:0;font-size:15px;}
@media (min-width:1024px){
  .section{padding:92px 0;}
  .section-head h2{font-size:32px;}
  .section-head{margin-bottom:38px;}
}

/* ---------- chips + waterfall ---------- */
.chip-bar{
  display:flex;flex-wrap:nowrap;gap:10px;
  overflow-x:auto;
  padding:4px 2px 14px;
  margin-bottom:20px;
  scrollbar-width:thin;
}
.chip-bar::-webkit-scrollbar{height:6px;}
.chip-bar::-webkit-scrollbar-thumb{background:var(--c-surface-2);border-radius:999px;}
.chip{
  flex:0 0 auto;
  min-height:40px;
  padding:0 18px;
  border-radius:999px;
  border:1px solid var(--c-line);
  background:transparent;
  color:var(--c-text-2);
  font-size:14px;
  transition:background-color 200ms ease-out,color 200ms ease-out,border-color 200ms ease-out,transform 280ms var(--ease);
}
.chip:hover{color:var(--c-text);border-color:rgba(46,216,195,.5);transform:translateY(-1px);}
.chip.is-active{
  background:var(--c-accent);
  border-color:var(--c-accent);
  color:#08221F;
  font-weight:600;
}
.chip-count{font-size:13px;color:var(--c-text-3);margin-left:2px;font-variant-numeric:tabular-nums;}
.waterfall{
  column-count:1;
  column-gap:22px;
}
@media (min-width:768px){.waterfall{column-count:2;}}
@media (min-width:1024px){.waterfall{column-count:3;column-gap:24px;}}
.wf-card{
  break-inside:avoid;
  display:flex;flex-direction:column;
  margin:0 0 22px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-card);
  overflow:hidden;
  transition:transform 280ms var(--ease),box-shadow 280ms var(--ease),border-color 200ms ease-out;
}
.wf-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-card-hover);
  border-color:rgba(160,140,255,.34);
}
.wf-media{position:relative;overflow:hidden;background:var(--c-surface-2);}
.wf-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease);}
.wf-card:hover .wf-media img{transform:scale(1.04);}
.wf-media.ratio-16x10{aspect-ratio:16/10;}
.wf-media.ratio-4x3{aspect-ratio:4/3;}
.wf-media.ratio-1x1{aspect-ratio:1/1;}
.wf-media::after{
  content:"";
  position:absolute;inset:0;
  border-bottom:1px solid var(--c-line);
  background:linear-gradient(180deg,rgba(14,10,31,0) 42%,rgba(14,10,31,.62) 100%);
  pointer-events:none;
}
.wf-media .media-tag{
  position:absolute;left:14px;bottom:12px;z-index:2;
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;
  background:rgba(14,10,31,.72);
  border:1px solid rgba(46,216,195,.45);
  color:var(--c-accent);
  font-size:12px;
}
.wf-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;}
.wf-body h3{font-size:18px;font-weight:600;line-height:1.45;}
.wf-body p{
  color:var(--c-text-2);
  font-size:14.5px;
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.wf-meta{
  display:flex;flex-wrap:wrap;gap:8px;
  font-size:12.5px;color:var(--c-text-3);
  font-variant-numeric:tabular-nums;
}
.wf-foot{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:6px;
  border-top:1px solid var(--c-line-soft);
  margin-top:4px;
}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;
  border:1px solid var(--c-line);
  color:var(--c-text-2);
  font-size:12px;
}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--c-accent);font-size:14px;font-weight:600;text-decoration:none;
}
.link-more svg{transition:transform 240ms var(--ease);}
.link-more:hover{text-decoration:none;}
.link-more:hover svg{transform:translateX(3px);}
.empty-state{
  display:none;
  text-align:center;
  padding:48px 20px;
  border:1px dashed var(--c-line);
  border-radius:var(--r-card);
  color:var(--c-text-2);
}
.empty-state.show{display:block;}
.empty-state svg{color:var(--c-text-3);margin:0 auto 12px;}

/* ---------- rank ---------- */
.rank-wrap{
  display:grid;gap:20px;
}
@media (min-width:1024px){.rank-wrap{grid-template-columns:1.55fr 1fr;gap:26px;align-items:start;}}
.rank-panel{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:var(--sh-card);
}
@media (min-width:768px){.rank-panel{padding:26px 28px;}}
.rank-item{
  display:grid;
  grid-template-columns:34px 1fr auto;
  align-items:center;
  gap:14px;
  padding:14px 0;
  border-bottom:1px solid var(--c-line-soft);
}
.rank-item:last-child{border-bottom:0;padding-bottom:0;}
.rank-no{
  width:34px;height:34px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;
  font-variant-numeric:tabular-nums;
  background:var(--c-surface-2);color:var(--c-text-2);
  border:1px solid var(--c-line);
}
.rank-item.top .rank-no{
  background:linear-gradient(135deg,rgba(109,74,255,.95),rgba(46,216,195,.85));
  color:#fff;border-color:transparent;
}
.rank-name{font-size:15.5px;font-weight:600;line-height:1.4;}
.rank-sub{font-size:12.5px;color:var(--c-text-3);}
.rank-bar{
  height:8px;border-radius:999px;
  background:var(--c-surface-2);
  overflow:hidden;
  margin-top:8px;
}
.rank-bar i{
  display:block;height:100%;border-radius:999px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
}
.rank-score{font-size:13px;color:var(--c-text-2);font-variant-numeric:tabular-nums;white-space:nowrap;}
.side-panel{
  background:linear-gradient(160deg,rgba(34,24,71,.9),rgba(27,18,55,.9));
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:22px;
}
.side-panel h3{font-size:18px;margin-bottom:12px;}
.side-list li{
  display:flex;gap:10px;align-items:flex-start;
  padding:11px 0;
  border-bottom:1px solid var(--c-line-soft);
  font-size:14.5px;color:var(--c-text-2);
}
.side-list li:last-child{border-bottom:0;}
.side-list svg{color:var(--c-accent);flex:0 0 auto;margin-top:6px;}

/* ---------- faq ---------- */
.faq-grid{display:grid;gap:14px;}
@media (min-width:1024px){.faq-grid{grid-template-columns:1fr 1fr;gap:16px 20px;}}
.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:16px;
  overflow:hidden;
  transition:border-color 200ms ease-out,box-shadow 280ms var(--ease);
}
.faq-item.open{border-color:rgba(46,216,195,.42);box-shadow:var(--sh-card);}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  min-height:56px;
  padding:14px 18px;
  background:transparent;border:0;
  color:var(--c-text);
  font-size:16px;font-weight:600;line-height:1.5;
  text-align:left;
}
.faq-q svg{flex:0 0 auto;color:var(--c-accent);transition:transform 300ms var(--ease);}
.faq-item.open .faq-q svg{transform:rotate(180deg);}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 300ms var(--ease);
  border-top:1px solid transparent;
}
.faq-item.open .faq-a{border-top-color:var(--c-line-soft);}
.faq-a p{
  margin:0;
  padding:14px 18px 18px;
  color:var(--c-text-2);
  font-size:14.5px;
}

/* ---------- cta ---------- */
.cta-panel{
  display:grid;gap:18px;
  padding:26px 22px;
  border-radius:var(--r-lg);
  border:1px solid rgba(46,216,195,.35);
  background:linear-gradient(140deg,rgba(27,18,55,.95),rgba(22,16,51,.9));
  box-shadow:var(--sh-card);
}
@media (min-width:768px){
  .cta-panel{
    grid-template-columns:1fr auto;
    align-items:center;
    gap:28px;
    padding:32px 34px;
  }
}
.cta-panel h2{font-size:22px;margin-bottom:8px;line-height:1.35;}
.cta-panel p{color:var(--c-text-2);font-size:14.5px;margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:20px;
  background:var(--c-bg-soft);
  border-top:1px solid var(--c-line);
}
.footer-main{
  display:grid;
  grid-template-columns:1fr;
  gap:28px;
  padding:44px 0 30px;
}
@media (min-width:640px){
  .footer-main{grid-template-columns:1fr 1fr;gap:30px 34px;}
}
@media (min-width:1024px){
  .footer-main{grid-template-columns:1.5fr 1fr 1fr 1.35fr;padding:56px 0 38px;}
}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{color:var(--c-text-2);font-size:14px;max-width:42ch;margin:0 0 16px;}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  width:38px;height:38px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  color:var(--c-text-2);
  transition:color 200ms ease-out,border-color 200ms ease-out,transform 280ms var(--ease);
}
.footer-social a:hover{color:var(--c-accent);border-color:rgba(46,216,195,.5);transform:translateY(-2px);text-decoration:none;}
.footer-col h3{font-size:15px;margin-bottom:14px;color:var(--c-text);}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:var(--c-text-2);font-size:14px;text-decoration:none;}
.footer-col a:hover{color:var(--c-accent);}
.subscribe-form{display:flex;gap:10px;margin-top:6px;}
@media (max-width:520px){.subscribe-form{flex-direction:column;}}
.subscribe-form input{
  flex:1 1 auto;min-width:0;height:44px;
  padding:0 14px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  color:var(--c-text);
  outline:none;
  transition:border-color 200ms ease-out,box-shadow 200ms ease-out;
}
.subscribe-form input::placeholder{color:var(--c-text-3);}
.subscribe-form input:focus{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(46,216,195,.16);}
.subscribe-form input.is-error{border-color:var(--c-warn);box-shadow:0 0 0 3px rgba(255,122,107,.16);}
.form-hint{font-size:12.5px;color:var(--c-text-3);margin:8px 0 0;}
.form-hint.error{color:var(--c-warn);}
.footer-bottom{
  border-top:1px solid var(--c-line-soft);
  padding:18px 0 26px;
  text-align:center;
  font-size:12.5px;
  color:var(--c-text-3);
}
.footer-bottom a{color:var(--c-text-3);}
.footer-bottom a:hover{color:var(--c-accent);}

/* roulang page: category3 */
:root{
  --c-primary:#6D4AFF;
  --c-primary-deep:#4A2FD6;
  --c-accent:#2ED8C3;
  --c-spark:#FFB84D;
  --c-bg:#0E0A1F;
  --c-bg-soft:#161033;
  --c-surface:#1B1237;
  --c-surface-2:#221847;
  --c-line:rgba(160,140,255,.18);
  --c-line-soft:rgba(255,255,255,.08);
  --c-text:#EDE9FF;
  --c-text-2:#A79FD0;
  --c-text-3:#7A72A6;
  --c-ok:#35D07F;
  --c-warn:#FF7A6B;
  --r-sm:10px;
  --r-btn:12px;
  --r-card:20px;
  --r-xl:28px;
  --shadow-card:0 1px 0 rgba(255,255,255,.04) inset,0 18px 40px -24px rgba(80,50,220,.55);
  --shadow-hover:0 26px 60px -28px rgba(110,74,255,.7);
  --ease:280ms cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-text);
  background-color:var(--c-bg);
  background-image:
    radial-gradient(1100px 560px at 12% -8%,rgba(109,74,255,.22),transparent 62%),
    radial-gradient(900px 420px at 92% 6%,rgba(46,216,195,.12),transparent 60%),
    linear-gradient(180deg,rgba(22,16,51,.9) 0%,rgba(14,10,31,0) 46%),
    linear-gradient(180deg,#0E0A1F 0%,#0E0A1F 100%);
  background-attachment:fixed,fixed,scroll,scroll;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:16px;}
a{color:var(--c-accent);text-decoration:none;text-underline-offset:3px;}
a:hover{text-decoration:underline;}
button,input{font-family:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px;}

body .container,
body .container-fluid{
  width:100%;
  max-width:1240px;
  margin-inline:auto;
  padding-inline:20px;
}
@media (min-width:768px){
  body .container{padding-inline:32px;}
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(14,10,31,.55);
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease),backdrop-filter var(--ease);
}
.site-header.is-scrolled{
  background:rgba(14,10,31,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--c-line-soft);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:22px;
  min-height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--c-text);
  text-decoration:none;
  flex:0 0 auto;
}
.brand:hover{text-decoration:none;}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(135deg,rgba(109,74,255,.28),rgba(46,216,195,.18));
  border:1px solid var(--c-line);
}
.brand-text{
  font-size:17px;
  font-weight:700;
  letter-spacing:.01em;
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  white-space:nowrap;
}
.brand-text .brand-sub{
  font-size:12px;
  font-weight:500;
  color:var(--c-text-2);
  letter-spacing:.04em;
}
.nav-main{
  display:none;
  align-items:center;
  gap:6px;
  margin-left:8px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 14px;
  border-radius:10px;
  font-size:15px;
  color:var(--c-text-2);
  text-decoration:none;
  transition:color 200ms ease-out,transform var(--ease),background 200ms ease-out;
}
.nav-link:hover{
  color:var(--c-text);
  background:rgba(160,140,255,.08);
  text-decoration:none;
  transform:translateY(-1px);
}
.nav-link.active{
  color:var(--c-text);
  font-weight:600;
}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:4px;
  height:2px;
  border-radius:999px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
}
.header-tools{
  display:none;
  align-items:center;
  gap:12px;
  margin-left:auto;
}
.nav-search{
  position:relative;
  display:flex;
  align-items:center;
  width:240px;
  height:42px;
  border-radius:12px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  transition:border-color 200ms ease-out,box-shadow 200ms ease-out;
}
.nav-search:focus-within{
  border-color:var(--c-accent);
  box-shadow:0 0 0 3px rgba(46,216,195,.14);
}
.nav-search i{
  position:absolute;
  left:13px;
  font-size:13px;
  color:var(--c-text-3);
}
.nav-search input{
  width:100%;
  height:100%;
  padding:0 14px 0 36px;
  border:0;
  background:transparent;
  color:var(--c-text);
  font-size:14px;
  border-radius:12px;
}
.nav-search input::placeholder{color:var(--c-text-3);}
.nav-search input:focus{outline:none;}
.btn-login{
  display:inline-flex;
  align-items:center;
  height:42px;
  padding:0 14px;
  border-radius:12px;
  font-size:14px;
  font-weight:500;
  color:var(--c-text-2);
  background:transparent;
  border:1px solid transparent;
  text-decoration:none;
  transition:color 200ms ease-out,background 200ms ease-out;
}
.btn-login:hover{color:var(--c-text);background:rgba(160,140,255,.1);text-decoration:none;}
.nav-toggle{
  margin-left:auto;
  width:44px;height:44px;
  display:grid;place-items:center;
  border-radius:12px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  color:var(--c-text);
  font-size:17px;
}
@media (min-width:1024px){
  .nav-main{display:flex;}
  .header-tools{display:flex;}
  .nav-toggle{display:none;}
}

/* 移动端抽屉 */
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(8,5,20,.7);
  opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);
  z-index:90;
}
.drawer-mask.show{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;right:0;
  width:min(320px,86vw);
  height:100%;
  background:var(--c-bg-soft);
  border-left:1px solid var(--c-line);
  padding:22px 20px 32px;
  transform:translateX(102%);
  transition:transform var(--ease);
  z-index:95;
  overflow-y:auto;
}
.drawer.show{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:40px;height:40px;
  border-radius:12px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  color:var(--c-text);
  font-size:16px;
}
.drawer .nav-link{
  height:48px;
  width:100%;
  font-size:15.5px;
  border-radius:12px;
}
.drawer .nav-link.active::after{display:none;}
.drawer .nav-link.active{background:rgba(109,74,255,.18);}
.drawer-search{
  margin:14px 0 18px;
  width:100%;
  height:46px;
  border-radius:12px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  color:var(--c-text);
  padding:0 14px;
  font-size:14px;
}
.drawer-search::placeholder{color:var(--c-text-3);}
.drawer .btn{width:100%;justify-content:center;margin-top:8px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  border:0;
  text-decoration:none;
  white-space:nowrap;
  transition:transform var(--ease),box-shadow var(--ease),filter 200ms ease-out,background 200ms ease-out,color 200ms ease-out;
}
.btn:hover{text-decoration:none;}
.btn-primary{
  background:linear-gradient(135deg,var(--c-primary) 0%,#8A5BFF 55%,var(--c-spark) 100%);
  color:#fff;
  box-shadow:0 14px 32px -14px rgba(109,74,255,.85);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 20px 40px -16px rgba(109,74,255,.95);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;
  border:1.5px solid var(--c-accent);
  color:var(--c-accent);
}
.btn-ghost:hover{background:rgba(46,216,195,.1);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-dark{
  background:var(--c-surface-2);
  border:1px solid var(--c-line);
  color:var(--c-text);
}
.btn-dark:hover{background:#2A1E56;transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;box-shadow:none;}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--c-accent);
  font-size:14px;
  font-weight:600;
  background:none;
  border:0;
  padding:0;
}
.btn-text i{transition:transform var(--ease);font-size:12px;}
.btn-text:hover i{transform:translateX(3px);}

/* ============ 通用徽章 / 标签 ============ */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 11px;
  border-radius:999px;
  font-size:12.5px;
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
  white-space:nowrap;
}
.badge-line{border:1px solid var(--c-line);color:var(--c-text-2);background:rgba(255,255,255,.02);}
.badge-accent{border:1px solid rgba(46,216,195,.45);color:var(--c-accent);background:rgba(46,216,195,.08);}
.badge-primary{background:rgba(109,74,255,.2);color:#C6B7FF;border:1px solid rgba(109,74,255,.4);}
.badge-spark{background:linear-gradient(135deg,rgba(255,184,77,.95),rgba(255,145,60,.9));color:#3A2100;font-weight:700;border:0;}
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  font-size:12px;
  color:var(--c-accent);
  border:1px solid rgba(46,216,195,.4);
  background:rgba(46,216,195,.06);
}

/* ============ 页头 ============ */
.page-hero{
  position:relative;
  overflow:hidden;
  padding:56px 0 52px;
  border-bottom:1px solid var(--c-line-soft);
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.3;
}
.page-hero::after{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(760px 360px at 16% -20%,rgba(109,74,255,.5),transparent 66%),
    linear-gradient(180deg,rgba(14,10,31,.62) 0%,rgba(14,10,31,.92) 68%,#0E0A1F 100%);
}
.page-hero .hero-inner{position:relative;z-index:2;}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-text-3);
  margin-bottom:18px;
}
.crumb a{color:var(--c-text-3);}
.crumb a:hover{color:var(--c-accent);}
.hero-tagline{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:16px;
  padding:6px 14px;
  border-radius:999px;
  font-size:13px;
  color:var(--c-accent);
  border:1px solid rgba(46,216,195,.35);
  background:rgba(46,216,195,.07);
}
.page-hero h1{
  font-size:30px;
  line-height:1.22;
  letter-spacing:-.02em;
  max-width:16em;
}
.page-hero h1 .h1-accent{
  background:linear-gradient(120deg,#C6B7FF,var(--c-accent));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-desc{
  margin-top:16px;
  max-width:62ch;
  font-size:15.5px;
  color:var(--c-text-2);
}
.hero-badges{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:24px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:26px;
}
.hero-actions .btn{width:100%;}
@media (min-width:520px){
  .hero-actions .btn{width:auto;}
}
@media (min-width:768px){
  .page-hero{padding:74px 0 68px;}
  .page-hero h1{font-size:42px;}
  .hero-desc{font-size:16px;}
}
@media (min-width:1024px){
  .page-hero h1{font-size:50px;}
}

/* ============ 板块通用 ============ */
.section{padding:56px 0;}
@media (min-width:1024px){
  .section{padding:88px 0;}
}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head.center{margin-inline:auto;text-align:center;}
.section-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:.14em;
  color:var(--c-accent);
  text-transform:uppercase;
  margin-bottom:12px;
}
.section-head h2{
  font-size:24px;
  letter-spacing:-.02em;
}
@media (min-width:768px){
  .section-head h2{font-size:32px;}
}
.section-head p{
  margin-top:14px;
  color:var(--c-text-2);
  font-size:15.5px;
}
.divider{
  height:1px;
  background:linear-gradient(90deg,transparent,var(--c-line-soft) 18%,var(--c-line-soft) 82%,transparent);
  border:0;
  margin:0;
}

/* ============ 数据速览 ============ */
.stat-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}
@media (min-width:640px){
  .stat-grid{grid-template-columns:repeat(2,1fr);}
}
@media (min-width:1024px){
  .stat-grid{grid-template-columns:repeat(4,1fr);}
}
.stat-card{
  position:relative;
  padding:22px 22px 20px;
  border-radius:var(--r-card);
  background:linear-gradient(160deg,var(--c-surface) 0%,#170F30 100%);
  border:1px solid var(--c-line);
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(160,140,255,.34);}
.stat-card .stat-ico{
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:12px;
  color:var(--c-accent);
  border:1px solid rgba(46,216,195,.35);
  background:rgba(46,216,195,.08);
  font-size:16px;
  margin-bottom:14px;
}
.stat-num{
  font-size:30px;
  font-weight:700;
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  background:linear-gradient(120deg,#EDE9FF,#A79FD0);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.stat-label{margin-top:6px;font-size:14px;color:var(--c-text-2);}
.stat-note{margin-top:10px;font-size:12.5px;color:var(--c-text-3);}

/* ============ 时间轴 ============ */
.timeline{
  position:relative;
  margin-top:6px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:19px;top:6px;bottom:6px;
  width:2px;
  border-radius:999px;
  background:linear-gradient(180deg,rgba(109,74,255,0),rgba(109,74,255,.6) 10%,rgba(46,216,195,.55) 88%,rgba(46,216,195,0));
}
.tl-item{
  position:relative;
  padding-left:58px;
  margin-bottom:22px;
}
.tl-node{
  position:absolute;
  left:0;top:22px;
  width:40px;height:40px;
  border-radius:50%;
  display:grid;place-items:center;
  font-size:13px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  color:#CFC4FF;
  background:var(--c-surface-2);
  border:1px solid rgba(109,74,255,.5);
  box-shadow:0 0 0 6px rgba(14,10,31,.9);
}
.tl-item.is-current .tl-node{
  color:#fff;
  background:linear-gradient(135deg,var(--c-primary),var(--c-accent));
  border-color:transparent;
  box-shadow:0 0 0 6px rgba(14,10,31,.9),0 0 0 10px rgba(109,74,255,.22);
}
.tl-card{
  border-radius:var(--r-card);
  background:linear-gradient(160deg,var(--c-surface) 0%,#180F33 100%);
  border:1px solid var(--c-line);
  box-shadow:var(--shadow-card);
  overflow:hidden;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.tl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(160,140,255,.34);}
.tl-card-head{
  display:flex;
  align-items:center;
  gap:12px;
  justify-content:space-between;
  padding:16px 20px;
  border-bottom:1px solid var(--c-line-soft);
  background:rgba(255,255,255,.02);
}
.tl-step{
  font-size:12.5px;
  letter-spacing:.1em;
  color:var(--c-text-3);
  font-variant-numeric:tabular-nums;
}
.tl-body{padding:20px;}
.tl-body h3{font-size:18px;margin-bottom:10px;}
.tl-body p{color:var(--c-text-2);font-size:14.8px;margin-bottom:14px;}
.tl-figure{
  aspect-ratio:16/10;
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--c-line-soft);
  background:var(--c-surface-2);
  margin-bottom:16px;
}
.tl-figure img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.tl-meta{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  padding-top:14px;
  border-top:1px solid var(--c-line-soft);
}
.tl-meta div{font-size:13px;color:var(--c-text-3);}
.tl-meta strong{
  display:block;
  color:var(--c-text);
  font-size:14.5px;
  font-variant-numeric:tabular-nums;
  font-weight:600;
}
@media (min-width:768px){
  .timeline::before{left:50%;transform:translateX(-50%);top:0;bottom:0;}
  .tl-item{
    width:50%;
    padding-left:0;
    padding-right:56px;
    margin-bottom:16px;
  }
  .tl-item.right{
    margin-left:50%;
    padding-right:0;
    padding-left:56px;
  }
  .tl-item .tl-node{left:auto;right:-20px;top:26px;}
  .tl-item.right .tl-node{left:-20px;right:auto;}
  .tl-item.right .tl-node{box-shadow:0 0 0 6px rgba(14,10,31,.9);}
  .tl-item.right.is-current .tl-node{box-shadow:0 0 0 6px rgba(14,10,31,.9),0 0 0 10px rgba(109,74,255,.22);}
}

/* ============ 权益对比表 ============ */
.compare-wrap{
  border-radius:var(--r-card);
  border:1px solid var(--c-line);
  background:linear-gradient(160deg,var(--c-surface) 0%,#170F30 100%);
  box-shadow:var(--shadow-card);
  overflow:hidden;
}
.compare-scroll{overflow-x:auto;}
table.compare{
  width:100%;
  min-width:660px;
  border-collapse:collapse;
  font-size:14.5px;
}
table.compare th,
table.compare td{
  padding:16px 18px;
  text-align:left;
  border-bottom:1px solid var(--c-line-soft);
  white-space:nowrap;
}
table.compare thead th{
  background:var(--c-surface-2);
  color:var(--c-text);
  font-size:13.5px;
  letter-spacing:.02em;
  border-bottom:1px solid var(--c-line);
}
table.compare thead th:first-child{color:var(--c-text-2);font-weight:500;}
table.compare tbody tr:last-child td{border-bottom:0;}
table.compare tbody tr{transition:background 200ms ease-out;}
table.compare tbody tr:hover{background:rgba(109,74,255,.08);}
table.compare td:first-child{color:var(--c-text-2);}
table.compare td.val{
  font-variant-numeric:tabular-nums;
  color:var(--c-text);
  font-weight:600;
}
table.compare td.hot{color:var(--c-accent);}
table.compare td .dot{
  display:inline-block;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--c-text-3);
  margin-right:8px;
  vertical-align:middle;
}
table.compare td.hot .dot{background:var(--c-accent);}
.compare-foot{
  padding:16px 20px;
  border-top:1px solid var(--c-line-soft);
  font-size:13px;
  color:var(--c-text-3);
  background:rgba(255,255,255,.02);
}

/* ============ 领取步骤 ============ */
.steps{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}
@media (min-width:768px){
  .steps{grid-template-columns:repeat(3,1fr);}
}
.step-card{
  position:relative;
  padding:26px 22px 22px;
  border-radius:var(--r-card);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(160,140,255,.34);}
.step-index{
  font-size:13px;
  letter-spacing:.12em;
  color:var(--c-accent);
  font-variant-numeric:tabular-nums;
  margin-bottom:12px;
}
.step-card h3{font-size:17.5px;margin-bottom:10px;}
.step-card p{color:var(--c-text-2);font-size:14.6px;margin:0;}
.step-line{
  position:absolute;
  top:34px;right:-9px;
  width:18px;height:2px;
  background:linear-gradient(90deg,var(--c-primary),var(--c-accent));
  display:none;
}
@media (min-width:768px){
  .step-card:not(:last-child) .step-line{display:block;}
}

/* ============ FAQ ============ */
.faq-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:14px;
}
@media (min-width:1024px){
  .faq-grid{grid-template-columns:repeat(2,1fr);gap:16px 22px;}
}
.faq-item{
  border-radius:16px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  overflow:hidden;
  transition:border-color var(--ease),background 200ms ease-out;
}
.faq-item.open{border-color:rgba(46,216,195,.42);background:#1E1440;}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:18px 20px;
  background:transparent;
  border:0;
  color:var(--c-text);
  font-size:16px;
  font-weight:600;
  text-align:left;
  line-height:1.55;
}
.faq-q i{
  flex:0 0 auto;
  font-size:13px;
  color:var(--c-accent);
  transition:transform var(--ease);
}
.faq-item.open .faq-q i{transform:rotate(180deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height var(--ease);
}
.faq-a-inner{
  padding:0 20px 20px;
  border-top:1px solid var(--c-line-soft);
  margin-top:0;
  padding-top:16px;
  font-size:14.8px;
  color:var(--c-text-2);
}
.faq-a-inner p{margin:0;}

/* ============ 窄版 CTA ============ */
.cta-narrow{
  border-radius:var(--r-card);
  border:1px solid rgba(46,216,195,.32);
  background:
    radial-gradient(600px 220px at 88% -30%,rgba(46,216,195,.16),transparent 70%),
    linear-gradient(120deg,#1A1038 0%,#150E2E 100%);
  padding:26px 24px;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.cta-narrow h2{font-size:20px;}
.cta-narrow p{margin:8px 0 0;font-size:14.6px;color:var(--c-text-2);}
.cta-narrow .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
@media (min-width:768px){
  .cta-narrow{
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    padding:28px 32px;
  }
  .cta-narrow h2{font-size:23px;}
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:20px;
  background:var(--c-bg-soft);
  border-top:1px solid var(--c-line);
  padding:52px 0 22px;
}
.footer-main{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
}
@media (min-width:768px){
  .footer-main{grid-template-columns:repeat(2,1fr);gap:32px 28px;}
}
@media (min-width:1024px){
  .footer-main{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;}
}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  color:var(--c-text-2);
  max-width:38ch;
  line-height:1.8;
}
.footer-social{display:flex;gap:10px;margin-top:18px;}
.footer-social a{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:11px;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  color:var(--c-text-2);
  transition:color 200ms ease-out,transform var(--ease),border-color 200ms ease-out;
}
.footer-social a:hover{color:var(--c-accent);border-color:rgba(46,216,195,.45);transform:translateY(-2px);text-decoration:none;}
.footer-col h3{
  font-size:14px;
  letter-spacing:.06em;
  color:var(--c-text);
  margin-bottom:16px;
  font-weight:600;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{
  font-size:14px;
  color:var(--c-text-2);
  transition:color 200ms ease-out,padding-left var(--ease);
}
.footer-col ul a:hover{color:var(--c-accent);padding-left:4px;text-decoration:none;}
.subscribe-form{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap;}
.subscribe-form input{
  flex:1 1 180px;
  height:44px;
  padding:0 14px;
  border-radius:12px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  color:var(--c-text);
  font-size:14px;
  transition:border-color 200ms ease-out,box-shadow 200ms ease-out;
}
.subscribe-form input::placeholder{color:var(--c-text-3);}
.subscribe-form input:focus{
  outline:none;
  border-color:var(--c-accent);
  box-shadow:0 0 0 3px rgba(46,216,195,.14);
}
.subscribe-form input.is-error{border-color:var(--c-warn);box-shadow:0 0 0 3px rgba(255,122,107,.16);}
.form-tip{margin-top:8px;font-size:12.5px;color:var(--c-text-3);}
.form-tip.error{color:var(--c-warn);}
.footer-bottom{
  margin-top:38px;
  padding-top:20px;
  border-top:1px solid var(--c-line-soft);
  text-align:center;
  font-size:12.5px;
  color:var(--c-text-3);
  letter-spacing:.02em;
}
.footer-bottom a{color:var(--c-text-3);}
.footer-bottom a:hover{color:var(--c-accent);}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
}