/* roulang page: index */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1C;
  --bg-2:#111A2E;
  --brand:#1FE0C8;
  --brand-deep:#0E9E96;
  --violet:#7C5CFF;
  --coral:#FF4D6D;
  --text-1:#F2F6FF;
  --text-2:#A7B3C9;
  --text-3:#66738C;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.085);
  --line:rgba(255,255,255,.10);
  --r-card:20px;
  --r-img:16px;
  --r-sm:14px;
  --shadow:0 20px 60px rgba(0,0,0,.55);
  --glow:0 10px 34px rgba(31,224,200,.28);
  --glow-coral:0 12px 34px rgba(255,77,109,.30);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.35;font-weight:600;letter-spacing:0}
p{max-width:46em}
::selection{background:rgba(31,224,200,.28);color:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}

.wrap{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.wrap{padding:0 32px}}
.sec{padding:56px 0}
@media(min-width:1024px){.sec{padding:96px 0}}

/* ---------- 背景光晕 ---------- */
.bg-fx{position:fixed;inset:0;pointer-events:none;z-index:0}
.bg-fx::before{
  content:"";position:absolute;top:-220px;left:50%;transform:translateX(-50%);
  width:1100px;height:720px;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(31,224,200,.16),rgba(124,92,255,.10) 45%,transparent 72%);
  filter:blur(10px);
}
.bg-fx::after{
  content:"";position:absolute;bottom:-260px;right:-200px;width:760px;height:760px;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(124,92,255,.14),transparent 68%);
}
.page{position:relative;z-index:1}

/* ---------- 玻璃卡通用 ---------- */
.glass{
  position:relative;
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.glass::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,200,.75),transparent);
  opacity:.85;
}
.card-hover{transition:transform .35s ease,border-color .35s ease,box-shadow .35s ease}
.card-hover:hover{transform:translateY(-4px);border-color:rgba(31,224,200,.55);box-shadow:var(--shadow),0 0 0 1px rgba(31,224,200,.18)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform .3s ease,filter .3s ease,border-color .3s ease,background-color .3s ease,box-shadow .3s ease;
}
.btn i{font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,var(--brand) 0%,var(--violet) 100%);
  color:#04121A;box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 14px 40px rgba(31,224,200,.4)}
.btn-ghost{
  background:var(--glass-strong);border-color:var(--line);color:var(--text-1);
  backdrop-filter:blur(14px);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-coral{
  background:linear-gradient(135deg,var(--coral) 0%,#FF7A5C 100%);
  color:#fff;box-shadow:var(--glow-coral);
}
.btn-coral:hover{filter:brightness(1.07);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;font-size:12px;line-height:1.6;
  background:var(--glass-strong);border:1px solid var(--line);color:var(--brand);
  backdrop-filter:blur(10px);
}
.badge-hot{
  background:linear-gradient(135deg,var(--coral),#FF7A5C);
  color:#fff;border-color:transparent;font-weight:600;
}
.badge-violet{color:#C9BCFF;border-color:rgba(124,92,255,.35)}
.badge-plain{color:var(--text-2)}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:72px;
  background:rgba(5,7,14,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.07);
  transition:background-color .3s ease,border-color .3s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,200,.55),transparent);
}
.nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0}
.logo-mark{
  width:40px;height:40px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(135deg,var(--brand),var(--violet));
  display:flex;align-items:center;justify-content:center;
  color:#04121A;font-weight:700;font-size:15px;letter-spacing:0;
  box-shadow:0 8px 24px rgba(31,224,200,.28);
}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-text b{font-size:15px;font-weight:700;letter-spacing:.2px}
.logo-text span{font-size:11px;color:var(--text-3);letter-spacing:.6px}
.nav-menu{display:none;align-items:center;gap:4px}
@media(min-width:1024px){.nav-menu{display:flex}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:9px 14px;border-radius:10px;font-size:15px;color:var(--text-2);
  transition:color .25s ease,background-color .25s ease;
}
.nav-link:hover,.nav-link.active{color:var(--text-1);background:rgba(255,255,255,.06)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--violet));
}
.nav-link i{font-size:11px;color:var(--text-3);transition:transform .25s ease}
.nav-right{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:42px;height:42px;border-radius:12px;display:none;align-items:center;justify-content:center;
  background:var(--glass-strong);border:1px solid var(--line);color:var(--text-2);cursor:pointer;
  transition:border-color .25s ease,color .25s ease;
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand)}
@media(min-width:1024px){.icon-btn{display:flex}}
.nav-cta{display:none}
@media(min-width:1024px){.nav-cta{display:inline-flex}}

/* Mega 面板 */
.mega-wrap{position:relative}
.mega{
  position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(8px);
  width:860px;padding:24px;opacity:0;visibility:hidden;
  background:rgba(10,15,28,.94);
  border:1px solid var(--line);border-radius:20px;
  backdrop-filter:blur(22px) saturate(150%);
  box-shadow:0 30px 80px rgba(0,0,0,.7);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
  display:grid;grid-template-columns:1fr 1fr 1fr;gap:0;
}
.mega-wrap:hover .mega,.mega-wrap:focus-within .mega{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mega-col{padding:0 20px;border-right:1px solid rgba(255,255,255,.08)}
.mega-col:last-child{border-right:0;padding-right:0}
.mega-col:first-child{padding-left:0}
.mega-title{font-size:12px;letter-spacing:1.4px;color:var(--text-3);margin-bottom:14px;font-weight:600}
.mega-list li+li{margin-top:4px}
.mega-list a{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;
  font-size:14px;color:var(--text-2);transition:background-color .25s ease,color .25s ease;
}
.mega-list a:hover{background:rgba(255,255,255,.07);color:var(--brand)}
.mega-list a i{font-size:12px;color:var(--brand)}
.mega-mini{display:flex;gap:12px;padding:10px;border-radius:14px;transition:background-color .25s ease}
.mega-mini:hover{background:rgba(255,255,255,.07)}
.mega-mini .pic{width:64px;height:40px;border-radius:10px;object-fit:cover;flex-shrink:0}
.mega-mini b{display:block;font-size:13.5px;font-weight:500;color:var(--text-1);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mega-mini em{font-style:normal;font-size:12px;color:var(--text-3)}
.mega-card{
  padding:18px;border-radius:16px;
  background:linear-gradient(160deg,rgba(31,224,200,.16),rgba(124,92,255,.14));
  border:1px solid rgba(31,224,200,.28);
}
.mega-card b{display:block;font-size:15px;margin-bottom:6px}
.mega-card p{font-size:13px;color:var(--text-2);line-height:1.7;margin-bottom:14px}

/* 移动端抽屉 */
.drawer-toggle{display:none}
.burger{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--glass-strong);border:1px solid var(--line);cursor:pointer;
}
@media(min-width:1024px){.burger{display:none}}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:88%;max-width:360px;z-index:120;
  background:rgba(8,12,22,.98);border-left:1px solid var(--line);
  backdrop-filter:blur(20px);
  transform:translateX(100%);transition:transform .3s ease;
  display:flex;flex-direction:column;padding:24px 20px;
}
.drawer-toggle:checked ~ .drawer{transform:translateX(0)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:110;opacity:0;visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;
}
.drawer-toggle:checked ~ .drawer-mask{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--glass-strong);border:1px solid var(--line);cursor:pointer;color:var(--text-2)}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;min-height:52px;padding:0 14px;
  border-radius:14px;font-size:16px;color:var(--text-2);
  transition:background-color .25s ease,color .25s ease;
}
.drawer-nav a:hover,.drawer-nav a.active{background:rgba(255,255,255,.07);color:var(--brand)}
.drawer-foot{margin-top:auto;padding-top:20px}

/* ---------- Hero ---------- */
.hero{position:relative;padding-top:118px;padding-bottom:56px;overflow:hidden}
@media(min-width:1024px){.hero{padding-top:150px;padding-bottom:96px}}
.hero-bg{
  position:absolute;inset:0;z-index:-1;
  background-image:linear-gradient(180deg,rgba(5,7,14,.86),rgba(5,7,14,.94)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:5fr 4fr;gap:56px}}
.pulse-badge{display:inline-flex;align-items:center;gap:9px;padding:7px 16px;border-radius:999px;
  background:var(--glass-strong);border:1px solid var(--line);font-size:13px;color:var(--text-2);
  backdrop-filter:blur(12px)}
.pulse-dot{width:8px;height:8px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 0 rgba(31,224,200,.6);
  animation:pulse 2s infinite}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(31,224,200,.55)}
  70%{box-shadow:0 0 0 12px rgba(31,224,200,0)}
  100%{box-shadow:0 0 0 0 rgba(31,224,200,0)}
}
.hero h1{
  font-size:clamp(34px,5.6vw,60px);font-weight:700;letter-spacing:0;
  margin:22px 0 18px;
  background:linear-gradient(120deg,#FFFFFF 20%,#9DF3E7 60%,#C9BCFF 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:16.5px;color:var(--text-2);max-width:33em;margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px;max-width:560px}
.stat b{display:block;font-size:26px;font-weight:700;color:var(--brand);line-height:1.3}
.stat span{font-size:13px;color:var(--text-3)}
.stat{padding-left:14px;border-left:1px solid rgba(255,255,255,.12)}

/* 竖屏手机框 */
.phone{
  position:relative;width:100%;max-width:360px;margin:0 auto;
  border-radius:28px;padding:10px;
  background:linear-gradient(160deg,rgba(255,255,255,.12),rgba(255,255,255,.03));
  border:1px solid var(--line);
  box-shadow:0 30px 80px rgba(0,0,0,.7);
}
.phone-screen{position:relative;border-radius:20px;overflow:hidden;aspect-ratio:16/10}
@media(min-width:1024px){.phone-screen{aspect-ratio:9/16}}
.phone-screen img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.phone:hover .phone-screen img{transform:scale(1.04)}
.phone-screen::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,14,.15) 0%,rgba(5,7,14,.72) 100%)}
.play-btn{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:66px;height:66px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.4);
  backdrop-filter:blur(10px);color:#fff;font-size:20px;z-index:2;
  transition:background-color .3s ease,transform .3s ease;
}
.phone:hover .play-btn{background:rgba(31,224,200,.35);transform:translate(-50%,-50%) scale(1.06)}
.phone-bottom{position:absolute;left:0;right:0;bottom:0;padding:16px;z-index:2}
.phone-bar{height:4px;border-radius:4px;background:rgba(255,255,255,.22);overflow:hidden;margin-bottom:12px}
.phone-bar i{display:block;height:100%;width:64%;border-radius:4px;
  background:linear-gradient(90deg,var(--brand),var(--violet))}
.phone-tags{display:flex;gap:8px;flex-wrap:wrap}

/* ---------- 板块标题 ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(24px,3vw,36px);font-weight:600}
.sec-head p{font-size:14px;color:var(--text-3);margin-top:8px;max-width:42em}
.more-link{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;
  transition:gap .25s ease}
.more-link:hover{gap:10px}

/* ---------- 横向轨道 ---------- */
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:6px 2px 20px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;scrollbar-color:rgba(31,224,200,.4) transparent;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 20px,#000 calc(100% - 20px),transparent 100%);
  mask-image:linear-gradient(90deg,transparent 0,#000 20px,#000 calc(100% - 20px),transparent 100%);
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:rgba(31,224,200,.35);border-radius:8px}
.rail::-webkit-scrollbar-track{background:transparent}

/* 竖屏卡 */
.v-card{
  position:relative;flex:0 0 72%;max-width:300px;scroll-snap-align:start;
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);
  background:var(--bg-2);box-shadow:var(--shadow);
  transition:transform .35s ease,border-color .35s ease;
}
@media(min-width:640px){.v-card{flex:0 0 46%}}
@media(min-width:1024px){.v-card{flex:0 0 260px;max-width:260px}}
.v-card:hover{transform:translateY(-4px);border-color:rgba(31,224,200,.55)}
.v-media{position:relative;aspect-ratio:9/16;overflow:hidden}
.v-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.v-card:hover .v-media img{transform:scale(1.04)}
.v-media::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,14,.05) 30%,rgba(5,7,14,.9) 100%)}
.v-corner{position:absolute;top:12px;left:12px;z-index:2}
.v-corner-right{position:absolute;top:12px;right:12px;z-index:2}
.v-play{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:2;
  width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.34);color:#fff;font-size:16px;
  backdrop-filter:blur(8px);transition:background-color .3s ease;
}
.v-card:hover .v-play{background:rgba(31,224,200,.34)}
.v-body{position:absolute;left:0;right:0;bottom:0;padding:16px;z-index:2}
.v-body h3{font-size:16px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:8px}

/* ---------- 种草清单 ---------- */
.pick-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:768px){.pick-grid{grid-template-columns:repeat(3,1fr)}}
.pick{padding:26px;position:relative;display:flex;flex-direction:column}
.pick .num{
  position:absolute;top:8px;right:16px;font-size:64px;font-weight:700;line-height:1;
  color:rgba(255,255,255,.05);pointer-events:none;letter-spacing:-2px;
}
.pick img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);margin-bottom:18px}
.pick h3{font-size:19px;margin-bottom:12px}
.pick ul{display:flex;flex-direction:column;gap:9px;margin-bottom:20px}
.pick ul li{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--text-2)}
.pick ul li i{color:var(--brand);font-size:12px}
.pick .pick-cta{margin-top:auto;font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px}

/* ---------- 资讯列表（CMS） ---------- */
.news-grid{display:grid;grid-template-columns:1fr;gap:22px}
@media(min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
.news-card{display:flex;flex-direction:column;overflow:hidden}
.news-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .thumb img{transform:scale(1.04)}
.news-card .thumb .badge{position:absolute;top:12px;left:12px;z-index:2}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-body h3{font-size:17px;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-3);border-top:1px solid rgba(255,255,255,.07);padding-top:14px}
.empty-state{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:64px 24px;text-align:center;
}
.empty-state i{font-size:34px;color:var(--text-3)}
.empty-state span{font-size:15px;color:var(--text-2)}

/* ---------- 评论口碑 ---------- */
.review-card{
  flex:0 0 84%;max-width:340px;scroll-snap-align:start;padding:22px;
  display:flex;flex-direction:column;gap:14px;
}
@media(min-width:768px){.review-card{flex:0 0 300px}}
.review-head{display:flex;align-items:center;gap:12px}
.avatar{
  width:44px;height:44px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;color:#04121A;
  background:linear-gradient(135deg,var(--brand),var(--violet));
}
.review-head b{font-size:14.5px;font-weight:600;display:block}
.stars{color:var(--coral);font-size:12px;letter-spacing:2px}
.review-card p{font-size:14px;color:var(--text-2);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.review-time{font-size:12px;color:var(--text-3);margin-top:auto}

/* ---------- CTA ---------- */
.cta-block{
  position:relative;border-radius:26px;padding:38px 28px;overflow:hidden;
  background:linear-gradient(140deg,rgba(31,224,200,.16),rgba(124,92,255,.16) 55%,rgba(255,77,109,.12));
  border:1px solid rgba(31,224,200,.28);
  box-shadow:0 24px 70px rgba(0,0,0,.6);
  display:grid;grid-template-columns:1fr;gap:28px;align-items:center;
}
@media(min-width:1024px){.cta-block{padding:52px;grid-template-columns:1.4fr 1fr;gap:48px}}
.cta-block::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.14) 1px,transparent 1px);
  background-size:22px 22px;
  -webkit-mask-image:linear-gradient(140deg,#000,transparent 70%);
  mask-image:linear-gradient(140deg,#000,transparent 70%);
}
.cta-block h2{font-size:clamp(24px,3vw,34px);margin-bottom:12px}
.cta-block p{font-size:15px;color:var(--text-2);margin-bottom:26px}
.cta-block img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line)}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(16px);transition:border-color .3s ease;
}
.faq-item[open]{border-color:rgba(31,224,200,.42)}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--brand),var(--violet));
  opacity:0;transition:opacity .3s ease;
}
.faq-item[open]::before{opacity:1}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 24px;font-size:16px;font-weight:500;
  display:flex;align-items:center;min-height:60px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;color:var(--text-3);transition:color .3s ease,transform .3s ease;
}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::after{content:"−";color:var(--brand)}
.faq-answer{padding:0 24px 22px;font-size:14.5px;color:var(--text-2);max-width:44em}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:40px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,15,28,.6),rgba(5,7,14,.95));
  padding:64px 0 28px;
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
.footer-brand p{font-size:14px;color:var(--text-3);margin:16px 0 20px;max-width:32em}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{
  font-size:12px;padding:5px 12px;border-radius:999px;color:var(--text-2);
  background:var(--glass);border:1px solid var(--line);
  transition:border-color .25s ease,color .25s ease;
}
.tag-cloud a:hover{border-color:var(--brand);color:var(--brand)}
.footer-title{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text-1)}
.footer-links li+li{margin-top:10px}
.footer-links a{font-size:14px;color:var(--text-3);transition:color .25s ease}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.07);
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: article */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1C;
  --bg-2:#111A2E;
  --brand:#1FE0C8;
  --brand-deep:#0E9E96;
  --violet:#7C5CFF;
  --coral:#FF4D6D;
  --text:#F2F6FF;
  --text-2:#A7B3C9;
  --text-3:#66738C;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --glass:rgba(255,255,255,.06);
  --glass-2:rgba(255,255,255,.08);
  --r-card:20px;
  --r-img:16px;
  --r-pill:999px;
  --r-sm:14px;
  --shadow:0 20px 60px rgba(0,0,0,.55);
  --glow:0 10px 34px rgba(31,224,200,.28);
  --w:1280px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(50% 40% at 12% -5%, rgba(31,224,200,.14), transparent 70%),
    radial-gradient(45% 40% at 92% 8%, rgba(124,92,255,.14), transparent 72%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
::selection{background:rgba(31,224,200,.3)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#05070E}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,rgba(31,224,200,.5),rgba(124,92,255,.5));border-radius:999px;border:2px solid #05070E}

.wrap{width:100%;max-width:var(--w);margin:0 auto;padding:0 20px;position:relative;z-index:2}
@media (min-width:1024px){.wrap{padding:0 32px}}

/* ------- 导航 ------- */
.site-header{
  position:fixed;top:0;left:0;right:0;height:72px;z-index:60;
  display:flex;align-items:center;
  background:rgba(5,7,14,.72);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.site-header.scrolled{
  background:rgba(5,7,14,.92);
  border-bottom-color:rgba(31,224,200,.22);
  box-shadow:0 14px 40px rgba(0,0,0,.5);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  font-weight:700;font-size:14px;letter-spacing:.02em;color:#04120F;
  background:linear-gradient(135deg,var(--brand),var(--violet));
  box-shadow:var(--glow);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text b{font-size:15px;font-weight:700}
.logo-text span{font-size:11px;color:var(--text-3);letter-spacing:.08em}
.nav-menu{display:none}
@media (min-width:1024px){.nav-menu{display:flex;align-items:center;gap:2px;margin-left:6px}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:12px;font-size:15px;color:var(--text-2);
  transition:color .3s ease,background .3s ease;white-space:nowrap;
}
.nav-link i{font-size:10px;opacity:.7}
.nav-link:hover{color:var(--text);background:var(--glass)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--violet));
  box-shadow:0 0 12px rgba(31,224,200,.6);
}
.mega-wrap{position:relative}
.mega{
  position:absolute;top:calc(100% + 16px);left:-30px;width:800px;
  display:grid;grid-template-columns:1.1fr 1.2fr .9fr;
  padding:22px;border-radius:20px;
  background:rgba(10,15,28,.94);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid var(--line);box-shadow:var(--shadow);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
  z-index:70;
}
.mega-wrap:hover .mega,.mega-wrap:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col{padding:0 20px;border-right:1px solid var(--line)}
.mega-col:last-child{border-right:0;padding-right:0}
.mega-col:first-child{padding-left:0}
.mega-title{font-size:12px;letter-spacing:.14em;color:var(--text-3);margin-bottom:12px;font-weight:600}
.mega-list li+li{margin-top:4px}
.mega-list a{
  display:flex;align-items:center;gap:9px;padding:9px 10px;border-radius:12px;
  font-size:14px;color:var(--text-2);transition:.3s ease;
}
.mega-list a i{color:var(--brand);font-size:12px}
.mega-list a:hover{background:var(--glass-2);color:var(--text)}
.mega-mini{display:flex;gap:11px;padding:9px;border-radius:14px;transition:.3s ease}
.mega-mini+.mega-mini{margin-top:8px}
.mega-mini:hover{background:var(--glass-2)}
.mega-mini .pic{width:74px;height:52px;border-radius:10px;object-fit:cover;flex-shrink:0}
.mega-mini span{display:flex;flex-direction:column;gap:4px;min-width:0}
.mega-mini b{font-size:13.5px;font-weight:600;line-height:1.5;color:var(--text)}
.mega-mini em{font-size:12px;color:var(--text-3);font-style:normal}
.mega-card{
  background:linear-gradient(150deg,rgba(31,224,200,.14),rgba(124,92,255,.14));
  border:1px solid var(--line-strong);border-radius:16px;padding:18px;
}
.mega-card b{display:block;font-size:15px;margin-bottom:8px}
.mega-card p{font-size:13px;color:var(--text-2);line-height:1.75;margin-bottom:14px}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  border:1px solid var(--line);background:var(--glass);color:var(--text-2);
  transition:.3s ease;
}
.icon-btn:hover{color:var(--brand);border-color:rgba(31,224,200,.45);background:var(--glass-2)}
.icon-btn:focus-visible,.btn:focus-visible,.nav-link:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.burger{display:grid}
@media (min-width:1024px){.burger{display:none}}
.nav-cta{display:none}
@media (min-width:640px){.nav-cta{display:inline-flex}}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .3s ease,box-shadow .3s ease,filter .3s ease,border-color .3s ease,background .3s ease;
  white-space:nowrap;
}
.btn-sm{height:42px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn-primary{
  color:#04120F;
  background:linear-gradient(135deg,var(--brand),var(--violet));
  box-shadow:var(--glow);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 14px 40px rgba(31,224,200,.36)}
.btn-glass{
  color:var(--text);background:var(--glass);border:1px solid var(--line-strong);
  backdrop-filter:blur(14px);
}
.btn-glass:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-coral{
  color:#fff;background:linear-gradient(135deg,var(--coral),#FF7A5C);
  box-shadow:0 10px 30px rgba(255,77,109,.3);
}
.btn-coral:hover{transform:translateY(-2px);filter:brightness(1.08)}
.btn:active{transform:translateY(0) scale(.99)}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(5,7,14,.66);backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:.3s ease;z-index:88;
}
.drawer-mask.open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;width:88%;max-width:380px;height:100%;
  background:rgba(10,15,28,.98);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .35s cubic-bezier(.4,0,.2,1);
  z-index:92;display:flex;flex-direction:column;padding:22px;overflow-y:auto;
}
.mobile-drawer.open{transform:none}
@media (min-width:1024px){.mobile-drawer,.drawer-mask{display:none}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 14px;border-radius:14px;font-size:16px;color:var(--text-2);
  border:1px solid transparent;transition:.3s ease;
}
.drawer-links a+a{margin-top:6px}
.drawer-links a.active,.drawer-links a:hover{
  color:var(--brand);background:var(--glass);border-color:var(--line);
}
.drawer-foot{margin-top:auto;padding-top:24px}

/* 文章头 */
.article-hero{position:relative;padding:126px 0 44px;overflow:hidden}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:url(/assets/images/backpic/back-1.webp) center/cover no-repeat;
  opacity:.16;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(55% 60% at 16% 0%, rgba(31,224,200,.2), transparent 70%),
    linear-gradient(180deg,rgba(5,7,14,.55),var(--bg-0) 88%);
}
.article-hero .wrap{position:relative;z-index:3}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px}
.crumb a{color:var(--text-2);transition:color .3s ease}
.crumb a:hover{color:var(--brand)}
.crumb em{font-style:normal;max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-3)}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:30px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;color:var(--brand);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.badge-violet{color:#C7BBFF}
.badge-coral{
  color:#fff;border:0;
  background:linear-gradient(135deg,var(--coral),#FF7A5C);
  box-shadow:0 8px 22px rgba(255,77,109,.28);
}
.badge-dot::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--brand);
  box-shadow:0 0 0 4px rgba(31,224,200,.18);
  animation:pulse 2s infinite ease-in-out;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.article-title{
  font-size:clamp(28px,4.6vw,48px);
  font-weight:700;line-height:1.28;letter-spacing:0;
  max-width:20em;
}
.article-meta{display:flex;flex-wrap:wrap;gap:12px 24px;margin-top:20px;font-size:13.5px;color:var(--text-3)}
.article-meta i{color:var(--brand);margin-right:6px}

/* 布局 */
.article-layout{display:grid;gap:36px;align-items:start;margin-top:12px}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:44px}
}
.article-main{min-width:0;max-width:820px}
.glass{
  position:relative;background:var(--glass);border:1px solid var(--line);
  border-radius:var(--r-card);backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow);overflow:hidden;
}
.glass::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,200,.65),transparent);
  pointer-events:none;
}
.article-body{padding:28px 22px 24px}
@media (min-width:768px){.article-body{padding:40px 40px 32px}}

/* 正文排版 */
.article-content{font-size:16px;line-height:1.9;color:var(--text-2);max-width:46em}
.article-content>*+*{margin-top:18px}
.article-content p{color:#CBD5E6}
.article-content h2{
  position:relative;padding-left:15px;margin:40px 0 16px;
  font-size:clamp(21px,2.4vw,27px);font-weight:600;line-height:1.5;color:var(--text);
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.34em;width:4px;height:1.05em;border-radius:4px;
  background:linear-gradient(180deg,var(--brand),var(--violet));
  box-shadow:0 0 14px rgba(31,224,200,.6);
}
.article-content h3{
  margin:28px 0 12px;font-size:19px;font-weight:600;color:var(--text);line-height:1.6;
}
.article-content h4{margin:22px 0 10px;font-size:16.5px;font-weight:600;color:var(--text)}
.article-content ul,.article-content ol{padding-left:4px}
.article-content li{
  position:relative;padding-left:20px;color:#CBD5E6;
}
.article-content li+li{margin-top:8px}
.article-content ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:linear-gradient(135deg,var(--brand),var(--violet));
  box-shadow:0 0 10px rgba(31,224,200,.5);
}
.article-content ol{counter-reset:li}
.article-content ol li::before{
  counter-increment:li;content:counter(li);
  position:absolute;left:0;top:.35em;
  width:20px;height:20px;border-radius:7px;display:grid;place-items:center;
  font-size:11px;font-weight:700;color:#04120F;
  background:linear-gradient(135deg,var(--brand),var(--violet));
}
.article-content blockquote{
  margin:24px 0;padding:18px 20px;
  background:var(--glass);border-left:3px solid var(--brand);
  border-radius:0 var(--r-sm) var(--r-sm) 0;
  color:var(--text);font-size:15.5px;
  backdrop-filter:blur(12px);
}
.article-content blockquote p{color:var(--text)}
.article-content img{
  width:100%;height:auto;border-radius:var(--r-img);
  border:1px solid var(--line);margin:22px 0 8px;
}
.article-content figure{margin:22px 0}
.article-content figcaption{
  font-size:13px;color:var(--text-3);text-align:center;margin-top:10px;
}
.article-content a{
  color:var(--brand);border-bottom:1px solid rgba(31,224,200,.4);
  transition:.3s ease;
}
.article-content a:hover{border-bottom-color:var(--brand);background:rgba(31,224,200,.08)}
.article-content strong{color:var(--text);font-weight:600}
.article-content table{
  width:100%;display:block;overflow-x:auto;
  border-collapse:collapse;margin:22px 0;font-size:14.5px;
  border:1px solid var(--line);border-radius:var(--r-sm);
  background:rgba(17,26,46,.55);
}
.article-content th,.article-content td{
  padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap;
}
.article-content th{color:var(--brand);font-weight:600;background:rgba(31,224,200,.06)}
.article-content tr:last-child td{border-bottom:0}
.article-content code{
  padding:2px 7px;border-radius:8px;font-size:13.5px;
  background:rgba(17,26,46,.9);border:1px solid var(--line);color:#8FF3E4;
}
.article-content pre{
  margin:22px 0;padding:16px 18px;border-radius:var(--r-sm);overflow-x:auto;
  background:#070B14;border:1px solid var(--line);
}
.article-content pre code{background:none;border:0;padding:0}
.article-content hr{border:0;border-top:1px solid var(--line);margin:32px 0}

.article-actions{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:34px;padding-top:24px;border-top:1px solid var(--line);
}
.empty-state{padding:52px 10px;text-align:center}
.empty-state .ico{
  width:64px;height:64px;margin:0 auto 18px;border-radius:20px;display:grid;place-items:center;
  font-size:24px;color:var(--brand);
  background:var(--glass);border:1px solid var(--line);box-shadow:var(--glow);
}
.empty-state h2{font-size:20px;font-weight:600;color:var(--text);margin-bottom:10px}
.empty-state p{color:var(--text-2);margin-bottom:22px;font-size:15px}

/* 侧栏 */
.article-side{display:flex;flex-direction:column;gap:20px}
@media (min-width:1024px){
  .article-side{position:sticky;top:96px}
}
.side-card{padding:20px}
.side-title{
  display:flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.1em;color:var(--text-3);
  margin-bottom:14px;
}
.side-title i{color:var(--brand)}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:320px;overflow-y:auto}
.toc-list a{
  display:block;padding:9px 12px;border-radius:12px;font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;transition:.3s ease;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.toc-list a:hover{color:var(--brand);background:var(--glass-2);border-left-color:var(--brand)}
.side-links li+li{margin-top:4px}
.side-links a{
  display:flex;gap:10px;align-items:flex-start;padding:10px;border-radius:14px;
  transition:.3s ease;
}
.side-links a:hover{background:var(--glass-2)}
.side-links img{width:62px;height:46px;border-radius:10px;object-fit:cover;flex-shrink:0}
.side-links b{display:block;font-size:13.5px;font-weight:600;line-height:1.55;color:var(--text);overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.side-links em{font-style:normal;font-size:12px;color:var(--text-3)}
.side-cta{
  padding:22px;border-radius:var(--r-card);
  background:linear-gradient(150deg,rgba(31,224,200,.16),rgba(124,92,255,.16));
  border:1px solid var(--line-strong);
}
.side-cta b{display:block;font-size:16px;margin-bottom:8px}
.side-cta p{font-size:13.5px;color:var(--text-2);line-height:1.75;margin-bottom:16px}

/* 板块通用 */
.section{padding:56px 0}
@media (min-width:1024px){.section{padding:92px 0}}
.section-head{margin-bottom:30px;max-width:44em}
.section-title{font-size:clamp(23px,3vw,33px);font-weight:600;line-height:1.4}
.section-sub{margin-top:10px;color:var(--text-2);font-size:15px}

/* 相关推荐卡 */
.related-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media (min-width:640px){.related-grid{grid-template-columns:1fr 1fr}}
.card{
  position:relative;display:flex;flex-direction:column;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;backdrop-filter:blur(18px) saturate(140%);
  transition:transform .35s ease,border-color .35s ease,box-shadow .35s ease;
}
.card::after{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,200,.6),transparent);
}
.card:hover{transform:translateY(-4px);border-color:rgba(31,224,200,.45);box-shadow:0 24px 60px rgba(0,0,0,.6)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#0A0F1C}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-media .badge{position:absolute;left:12px;top:12px}
.card-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{
  font-size:16.5px;font-weight:600;line-height:1.55;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-desc{
  font-size:14px;color:var(--text-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-3);margin-top:auto;padding-top:8px;border-top:1px solid var(--line)}
.card-meta i{color:var(--brand);margin-right:5px}

/* FAQ */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  position:relative;padding:0;margin-bottom:12px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--r-sm);
  backdrop-filter:blur(16px);overflow:hidden;transition:border-color .3s ease,background .3s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--brand),var(--violet));
  box-shadow:0 0 16px rgba(31,224,200,.6);
  opacity:0;transition:opacity .3s ease;
}
.faq-item[open]{border-color:rgba(31,224,200,.4);background:var(--glass-2)}
.faq-item[open]::before{opacity:1}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:20px 22px;font-size:16.5px;font-weight:600;color:var(--text);
  transition:color .3s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:22px;line-height:1;color:var(--text-3);flex-shrink:0;transition:color .3s ease,transform .3s ease;
}
.faq-item[open] summary{color:var(--brand)}
.faq-item[open] summary::after{content:"−";color:var(--brand);transform:rotate(180deg)}
.faq-item summary:hover{color:var(--brand)}
.faq-body{padding:0 22px 20px;color:var(--text-2);font-size:15px;line-height:1.85}

/* CTA */
.cta-band{
  position:relative;overflow:hidden;border-radius:26px;
  padding:32px 24px;
  background:
    radial-gradient(90% 140% at 0% 0%, rgba(31,224,200,.22), transparent 60%),
    radial-gradient(90% 140% at 100% 100%, rgba(124,92,255,.24), transparent 62%),
    rgba(10,15,28,.86);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow);
}
@media (min-width:768px){.cta-band{padding:44px 46px}}
.cta-grid{display:grid;gap:26px;align-items:center}
@media (min-width:900px){.cta-grid{grid-template-columns:1.5fr .9fr;gap:42px}}
.cta-band h2{font-size:clamp(23px,3vw,34px);font-weight:600;line-height:1.4;margin-bottom:12px}
.cta-band p{color:var(--text-2);font-size:15.5px;max-width:34em;margin-bottom:22px}
.cta-media{position:relative;aspect-ratio:4/3;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line)}
.cta-media img{width:100%;height:100%;object-fit:cover}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* 页脚 */
.site-footer{
  margin-top:96px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,15,28,.7),rgba(5,7,14,1));
  position:relative;z-index:2;
}
.footer-grid{display:grid;gap:34px;padding:56px 0 34px;grid-template-columns:1fr}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}}
.footer-brand p{margin:16px 0 18px;color:var(--text-2);font-size:14px;line-height:1.85;max-width:34em}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;color:var(--text-2);background:var(--glass);border:1px solid var(--line);
  transition:.3s ease;
}
.tag-cloud a:hover{color:var(--brand);border-color:rgba(31,224,200,.45)}
.footer-title{font-size:14px;font-weight:600;color:var(--text);margin-bottom:14px;letter-spacing:.04em}
.footer-links li+li{margin-top:2px}
.footer-links a{
  display:inline-block;padding:7px 0;font-size:14px;color:var(--text-2);transition:color .3s ease,transform .3s ease;
}
.footer-links a:hover{color:var(--brand);transform:translateX(3px)}
.footer-bottom{
  border-top:1px solid var(--line);padding:18px 0 24px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1C;
  --bg-2:#111A2E;
  --brand:#1FE0C8;
  --brand-deep:#0E9E96;
  --violet:#7C5CFF;
  --coral:#FF4D6D;
  --text:#F2F6FF;
  --muted:#A7B3C9;
  --dim:#66738C;
  --line:rgba(255,255,255,.10);
  --glass:rgba(255,255,255,.06);
  --glass-2:rgba(255,255,255,.08);
  --r-card:20px;
  --r-img:16px;
  --r-btn:14px;
  --shadow:0 20px 60px rgba(0,0,0,.55);
  --glow:0 10px 34px rgba(31,224,200,.28);
  --glow-coral:0 12px 34px rgba(255,77,109,.30);
  --header-h:72px;
}

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

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}

body{
  margin:0;
  padding-top:var(--header-h);
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(31,224,200,.12), transparent 62%),
    radial-gradient(760px 480px at 92% 4%, rgba(124,92,255,.14), transparent 60%),
    var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  overflow-x:hidden;
}

img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px;}

.wrap{width:100%;max-width:1280px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.wrap{padding:0 32px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:70;
  height:var(--header-h);
  background:rgba(5,7,14,.78);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .3s ease,border-color .3s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,200,.55),transparent);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:var(--header-h);}

.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--violet));
  color:#04121A;font-weight:700;font-size:15px;letter-spacing:.5px;
  box-shadow:0 8px 22px rgba(31,224,200,.30);
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text b{font-size:16px;font-weight:700;letter-spacing:.2px;}
.logo-text span{font-size:11px;color:var(--muted);letter-spacing:1.4px;}

.nav-menu{display:none;align-items:center;gap:6px;}
@media (min-width:1024px){.nav-menu{display:flex;}}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:9px 14px;border-radius:10px;
  font-size:14.5px;color:var(--muted);
  transition:color .28s ease,background .28s ease;
}
.nav-link i{font-size:10px;opacity:.75;}
.nav-link:hover{color:var(--text);background:var(--glass);}
.nav-link.active{color:var(--brand);background:rgba(31,224,200,.08);}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--violet));
}

.mega-wrap{position:relative;}
.mega{
  position:absolute;top:calc(100% + 14px);left:50%;transform:translate(-50%,10px);
  width:820px;padding:22px;
  display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px;
  background:rgba(10,15,28,.94);
  backdrop-filter:blur(22px) saturate(150%);
  -webkit-backdrop-filter:blur(22px) saturate(150%);
  border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--shadow);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.mega-wrap:hover .mega,.mega-wrap:focus-within .mega{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0);}
.mega-col{padding-right:18px;border-right:1px solid var(--line);}
.mega-col:last-child{border-right:0;padding-right:0;}
.mega-title{font-size:12px;letter-spacing:1.6px;color:var(--dim);margin-bottom:12px;font-weight:600;}
.mega-list li{margin-bottom:2px;}
.mega-list a{
  display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:10px;
  color:var(--muted);font-size:14px;transition:all .26s ease;
}
.mega-list a i{color:var(--brand);font-size:12px;}
.mega-list a:hover{background:var(--glass);color:var(--text);transform:translateX(3px);}
.mega-mini{display:flex;gap:11px;padding:9px;border-radius:14px;transition:background .26s ease;margin-bottom:8px;}
.mega-mini:hover{background:var(--glass);}
.mega-mini .pic{width:66px;height:44px;object-fit:cover;border-radius:10px;flex-shrink:0;}
.mega-mini span{display:flex;flex-direction:column;gap:3px;}
.mega-mini b{font-size:13.5px;font-weight:600;line-height:1.5;}
.mega-mini em{font-size:11.5px;color:var(--dim);font-style:normal;}
.mega-card{
  padding:16px;border-radius:16px;
  background:linear-gradient(150deg,rgba(31,224,200,.14),rgba(124,92,255,.13));
  border:1px solid rgba(31,224,200,.28);
}
.mega-card b{display:block;font-size:15px;margin-bottom:8px;}
.mega-card p{font-size:13px;color:var(--muted);margin-bottom:14px;line-height:1.7;}

.nav-right{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:42px;height:42px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);
  color:var(--muted);cursor:pointer;
  transition:all .28s ease;
}
.icon-btn:hover{color:var(--brand);border-color:rgba(31,224,200,.5);background:rgba(31,224,200,.10);}
.nav-right .btn-sm{display:none;}
@media (min-width:1024px){.nav-right .btn-sm{display:inline-flex;}}

.hamburger{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;
  background:var(--glass);border:1px solid var(--line);color:var(--text);cursor:pointer;
  transition:all .28s ease;
}
.hamburger:hover{color:var(--brand);border-color:rgba(31,224,200,.5);}
@media (min-width:1024px){.hamburger{display:none;}}

.nav-toggle{position:absolute;width:0;height:0;opacity:0;pointer-events:none;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:88%;max-width:380px;z-index:90;
  padding:22px 20px 28px;overflow-y:auto;
  background:rgba(10,15,28,.97);
  backdrop-filter:blur(22px);
  border-left:1px solid var(--line);
  transform:translateX(105%);
  transition:transform .35s ease;
}
.nav-toggle:checked ~ .drawer{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;z-index:85;background:rgba(3,5,10,.62);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s;
}
.nav-toggle:checked ~ .drawer-mask{opacity:1;visibility:visible;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer-close{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;background:var(--glass);border:1px solid var(--line);cursor:pointer;
}
.drawer-group{font-size:12px;letter-spacing:1.6px;color:var(--dim);margin:18px 0 10px;font-weight:600;}
.drawer a.drawer-link{
  display:flex;align-items:center;gap:10px;padding:12px 12px;border-radius:12px;
  color:var(--muted);font-size:15px;min-height:44px;transition:all .26s ease;
}
.drawer a.drawer-link:hover{background:var(--glass);color:var(--text);}
.drawer a.drawer-link.active{color:var(--brand);background:rgba(31,224,200,.10);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:999px;
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:all .3s ease;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--violet));
  color:#04121A;box-shadow:var(--glow);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 14px 40px rgba(31,224,200,.40);}
.btn-glass{
  background:var(--glass-2);border-color:var(--line);color:var(--text);
  backdrop-filter:blur(14px);
}
.btn-glass:hover{border-color:rgba(31,224,200,.6);color:var(--brand);transform:translateY(-2px);}
.btn-coral{
  background:linear-gradient(135deg,var(--coral),#FF7A5C);color:#fff;
  box-shadow:var(--glow-coral);
}
.btn-coral:hover{filter:brightness(1.06);transform:translateY(-2px);}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn:active{transform:translateY(0);}

/* ---------- 标签 / 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  font-size:12.5px;color:var(--brand);letter-spacing:.4px;
}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 0 rgba(31,224,200,.6);animation:pulse 2.2s infinite;}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(31,224,200,.55);}
  70%{box-shadow:0 0 0 10px rgba(31,224,200,0);}
  100%{box-shadow:0 0 0 0 rgba(31,224,200,0);}
}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:999px;
  background:rgba(124,92,255,.16);border:1px solid rgba(124,92,255,.34);
  font-size:12px;color:#C9BCFF;
}
.corner{
  position:absolute;top:12px;left:12px;z-index:3;
  padding:4px 11px;border-radius:999px;
  font-size:11.5px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,var(--coral),#FF7A5C);
  box-shadow:0 8px 20px rgba(255,77,109,.35);
}
.corner.cool{background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#04121A;box-shadow:0 8px 20px rgba(31,224,200,.30);}
.corner.violet{background:linear-gradient(135deg,var(--violet),#5B3FE0);}

/* ---------- 页面横幅 ---------- */
.banner{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(120deg,rgba(5,7,14,.94) 12%,rgba(5,7,14,.72) 58%,rgba(5,7,14,.92)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
}
.banner::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(620px 320px at 18% 30%,rgba(31,224,200,.20),transparent 66%),
             radial-gradient(520px 300px at 84% 76%,rgba(124,92,255,.20),transparent 64%);
  pointer-events:none;
}
.banner-inner{position:relative;z-index:2;padding:56px 0 60px;}
.banner h1{margin:18px 0 14px;}
.h1{
  font-size:clamp(34px,5.6vw,56px);font-weight:700;line-height:1.22;letter-spacing:0;
}
.h1 .accent{
  background:linear-gradient(120deg,var(--brand),var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lead{max-width:46em;font-size:16.5px;color:var(--muted);}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.banner-stats{display:flex;flex-wrap:wrap;gap:32px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line);}
.stat b{display:block;font-size:26px;font-weight:700;line-height:1.2;color:var(--brand);}
.stat span{font-size:13px;color:var(--dim);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--dim);}
.crumb a:hover{color:var(--brand);}
.crumb i{font-size:9px;}

/* ---------- 通用板块 ---------- */
.section{padding:64px 0;}
@media (min-width:1024px){.section{padding:96px 0;}}
.sec-head{margin-bottom:34px;}
.sec-title{font-size:clamp(24px,3vw,34px);font-weight:600;line-height:1.3;}
.sec-sub{margin-top:12px;color:var(--muted);font-size:15px;max-width:46em;}
.sec-crumb-top{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;}
.link-more{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;transition:gap .26s ease;}
.link-more:hover{gap:11px;}

/* ---------- 筛选胶囊 ---------- */
.filter-bar{
  display:flex;gap:10px;overflow-x:auto;padding:6px 0 14px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.filter-bar::-webkit-scrollbar{height:0;}
.pill{
  flex:0 0 auto;scroll-snap-align:start;
  min-height:44px;display:inline-flex;align-items:center;
  padding:0 20px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  color:var(--muted);font-size:14px;cursor:pointer;
  transition:all .28s ease;
}
.pill:hover{color:var(--text);border-color:rgba(31,224,200,.45);background:rgba(31,224,200,.08);}
.pill.active{
  background:linear-gradient(135deg,rgba(31,224,200,.20),rgba(124,92,255,.20));
  border-color:rgba(31,224,200,.55);color:var(--brand);font-weight:600;
}

/* ---------- 竖屏瀑布流 ---------- */
.waterfall{column-count:1;column-gap:22px;}
@media (min-width:640px){.waterfall{column-count:2;}}
@media (min-width:1024px){.waterfall{column-count:3;}}
@media (min-width:1280px){.waterfall{column-count:4;}}

.v-card{
  break-inside:avoid;display:inline-block;width:100%;margin:0 0 22px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  overflow:hidden;
  transition:transform .35s ease,border-color .35s ease,box-shadow .35s ease;
}
.v-card:hover{transform:translateY(-4px);border-color:rgba(31,224,200,.55);box-shadow:0 18px 50px rgba(0,0,0,.55),0 0 28px rgba(31,224,200,.18);}
.v-media{position:relative;display:block;overflow:hidden;}
.v-media.tall{aspect-ratio:9/16;}
.v-media.mid{aspect-ratio:4/5;}
.v-media.wide{aspect-ratio:3/4;}
.v-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.v-card:hover .v-media img{transform:scale(1.04);}
.v-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(5,7,14,.15) 0%,rgba(5,7,14,.10) 42%,rgba(5,7,14,.92) 100%);
}
.v-state{
  position:absolute;top:12px;right:12px;z-index:3;
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;font-size:11.5px;
  background:rgba(5,7,14,.68);border:1px solid rgba(31,224,200,.42);color:var(--brand);
  backdrop-filter:blur(8px);
}
.v-state i{font-size:9px;}
.v-body{position:absolute;left:0;right:0;bottom:0;z-index:3;padding:16px;}
.v-title{
  font-size:16px;font-weight:600;line-height:1.5;color:#fff;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.v-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:10px;font-size:12px;color:var(--muted);}
.v-meta .tag{padding:3px 9px;font-size:11px;}

.load-more{display:flex;justify-content:center;margin-top:26px;}

/* ---------- 指标卡 ---------- */
.grid-3{display:grid;gap:20px;grid-template-columns:1fr;}
@media (min-width:640px){.grid-3{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.grid-3{grid-template-columns:repeat(3,1fr);gap:24px;}}

.metric{
  position:relative;padding:26px;border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  transition:transform .35s ease,border-color .35s ease;
}
.metric::before{
  content:"";position:absolute;top:0;left:20px;right:20px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,200,.65),transparent);
}
.metric:hover{transform:translateY(-4px);border-color:rgba(31,224,200,.45);}
.metric .idx{
  font-size:13px;font-weight:700;color:var(--brand);letter-spacing:1.6px;
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
}
.metric h3{font-size:19px;font-weight:600;margin-bottom:12px;}
.metric p{font-size:14.5px;color:var(--muted);line-height:1.8;}
.metric ul{margin-top:16px;display:grid;gap:9px;}
.metric li{display:flex;gap:9px;font-size:14px;color:var(--muted);}
.metric li i{color:var(--brand);font-size:12px;margin-top:8px;}

/* ---------- 图文分栏 ---------- */
.split{display:grid;gap:26px;grid-template-columns:1fr;align-items:center;}
@media (min-width:1024px){.split{grid-template-columns:1.05fr .95fr;gap:48px;}}
.split-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);
  aspect-ratio:16/11;
}
.split-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.split-media:hover img{transform:scale(1.04);}
.split-media .float-card{
  position:absolute;left:16px;right:16px;bottom:16px;
  padding:14px 16px;border-radius:16px;
  background:rgba(5,7,14,.72);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.float-card b{font-size:14px;}
.float-card span{font-size:12.5px;color:var(--brand);}
.check-list{display:grid;gap:14px;margin-top:24px;}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--muted);}
.check-list i{
  flex:0 0 auto;width:24px;height:24px;margin-top:5px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:8px;background:rgba(31,224,200,.14);color:var(--brand);font-size:11px;
}

/* ---------- FAQ ---------- */
.faq{max-width:880px;margin:0 auto;display:grid;gap:14px;}
.faq details{
  border-radius:var(--r-card);
  background:var(--glass);border:1px solid var(--line);
  transition:border-color .3s ease,background .3s ease;
  overflow:hidden;
}
.faq details[open]{border-color:rgba(31,224,200,.45);background:var(--glass-2);}
.faq summary{
  list-style:none;cursor:pointer;min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--text);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary .mark{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--glass-2);border:1px solid var(--line);color:var(--muted);font-size:12px;
  transition:all .3s ease;
}
.faq details[open] summary{color:var(--brand);}
.faq details[open] summary .mark{background:rgba(31,224,200,.16);border-color:rgba(31,224,200,.45);color:var(--brand);}
.faq .answer{
  position:relative;padding:0 22px 20px 22px;color:var(--muted);font-size:15px;line-height:1.85;
}
.faq details[open] .answer::before{
  content:"";position:absolute;left:0;top:2px;bottom:18px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand),var(--violet));
  box-shadow:0 0 14px rgba(31,224,200,.7);
}

/* ---------- CTA ---------- */
.cta{
  position:relative;overflow:hidden;border-radius:26px;
  border:1px solid rgba(31,224,200,.28);
  background-image:linear-gradient(120deg,rgba(5,7,14,.90),rgba(10,15,28,.76)),url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
  box-shadow:var(--shadow);
}
.cta::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(520px 280px at 14% 22%,rgba(255,77,109,.22),transparent 62%),
             radial-gradient(520px 300px at 88% 80%,rgba(31,224,200,.20),transparent 64%);
}
.cta-inner{position:relative;z-index:2;display:grid;gap:24px;grid-template-columns:1fr;padding:34px;}
@media (min-width:1024px){.cta-inner{grid-template-columns:1fr 380px;align-items:center;padding:46px;gap:40px;}}
.cta h2{font-size:clamp(24px,3vw,32px);font-weight:600;line-height:1.35;}
.cta p{margin:14px 0 26px;color:var(--muted);font-size:15.5px;max-width:38em;}
.cta-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;}
.cta-media img{width:100%;height:100%;object-fit:cover;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:24px;padding:56px 0 26px;
  background:linear-gradient(180deg,rgba(10,15,28,.55),rgba(5,7,14,.95));
  border-top:1px solid var(--line);
}
.footer-grid{display:grid;gap:34px;grid-template-columns:1fr;}
@media (min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px;}}
.footer-brand p{margin:16px 0 18px;font-size:14px;color:var(--muted);max-width:34em;}
.footer-title{font-size:13px;letter-spacing:1.6px;color:var(--dim);font-weight:600;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a{font-size:14px;color:var(--muted);transition:color .26s ease,padding-left .26s ease;}
.footer-links a:hover{color:var(--brand);padding-left:4px;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag-cloud a{
  padding:5px 12px;border-radius:999px;font-size:12.5px;color:var(--muted);
  background:var(--glass);border:1px solid var(--line);
  transition:all .26s ease;
}
.tag-cloud a:hover{color:var(--brand);border-color:rgba(31,224,200,.45);}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:var(--dim);
}

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

/* roulang page: category2 */
:root{
  --bg-0:#05070E;
  --bg-1:#0A0F1C;
  --bg-2:#111A2E;
  --brand:#1FE0C8;
  --brand-deep:#0E9E96;
  --violet:#7C5CFF;
  --coral:#FF4D6D;
  --text:#F2F6FF;
  --text-2:#A7B3C9;
  --text-3:#66738C;
  --line:rgba(255,255,255,.10);
  --line-soft:rgba(255,255,255,.06);
  --glass:rgba(255,255,255,.06);
  --glass-strong:rgba(255,255,255,.08);
  --r-card:20px;
  --r-img:16px;
  --r-sm:14px;
  --r-pill:999px;
  --shadow:0 20px 60px rgba(0,0,0,.55);
  --glow:0 10px 34px rgba(31,224,200,.28);
  --wrap:1280px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(680px 420px at 12% -6%,rgba(31,224,200,.13),transparent 65%),
    radial-gradient(620px 420px at 92% 4%,rgba(124,92,255,.12),transparent 68%);
  z-index:0;
}
img{max-width:100%;display:block;border:0}
a{color:var(--text);text-decoration:none;transition:color .3s ease,border-color .3s ease,background-color .3s ease}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 14px;max-width:46em}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:0;line-height:1.35}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
::selection{background:rgba(31,224,200,.28);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#070A12}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--brand-deep),var(--violet));border-radius:999px;border:2px solid #070A12}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px;position:relative;z-index:1}
@media (min-width:1024px){.wrap{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:70;
  height:72px;
  background:rgba(5,7,14,.74);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line-soft);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,200,.55),rgba(124,92,255,.4),transparent);
  opacity:.7;
}
.nav-inner{display:flex;align-items:center;gap:18px;height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--violet));
  color:#04121A;font-weight:700;font-size:15px;letter-spacing:-.02em;
  box-shadow:0 8px 24px rgba(31,224,200,.3);
}
.logo-text{display:flex;flex-direction:column;line-height:1.18}
.logo-text b{font-size:15px;font-weight:700;letter-spacing:.01em}
.logo-text span{font-size:12px;color:var(--text-3);letter-spacing:.06em}

.nav-menu{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:12px;
  font-size:15px;color:var(--text-2);white-space:nowrap;
}
.nav-link i{font-size:10px;opacity:.7}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-link.active{color:var(--text)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--brand),var(--violet));
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:42px;height:42px;border-radius:12px;
  display:grid;place-items:center;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:var(--text-2);
  transition:all .3s ease;
}
.icon-btn:hover{color:var(--brand);border-color:rgba(31,224,200,.5);background:rgba(31,224,200,.08)}

.mega-wrap{position:relative}
.mega{
  position:absolute;top:calc(100% + 12px);left:50%;
  width:880px;max-width:min(880px,92vw);
  display:grid;grid-template-columns:1.05fr 1.15fr .95fr;
  padding:22px;border-radius:20px;
  background:rgba(10,15,28,.94);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  opacity:0;visibility:hidden;
  transform:translateX(-50%) translateY(8px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.mega::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;border-radius:20px 20px 0 0;
  background:linear-gradient(90deg,transparent,rgba(31,224,200,.6),transparent);
}
.mega-wrap:hover .mega,.mega-wrap:focus-within .mega{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mega-col{padding:0 18px}
.mega-col:first-child{padding-left:0}
.mega-col:last-child{padding-right:0}
.mega-col + .mega-col{border-left:1px solid rgba(255,255,255,.08)}
.mega-title{font-size:12px;color:var(--text-3);letter-spacing:.12em;margin-bottom:12px}
.mega-list{display:grid;gap:4px}
.mega-list a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;border-radius:10px;font-size:14px;color:var(--text-2);
}
.mega-list a i{color:var(--brand);font-size:12px;width:14px;text-align:center}
.mega-list a:hover{background:rgba(31,224,200,.09);color:var(--text)}
.mega-mini{
  display:flex;gap:10px;padding:9px;border-radius:12px;
  border:1px solid transparent;transition:all .3s ease;
}
.mega-mini:hover{background:rgba(255,255,255,.05);border-color:var(--line)}
.mega-mini .pic{width:56px;height:56px;border-radius:12px;object-fit:cover;flex:0 0 56px}
.mega-mini span{display:flex;flex-direction:column;gap:4px;min-width:0}
.mega-mini b{font-size:13px;font-weight:500;line-height:1.5;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mega-mini em{font-style:normal;font-size:12px;color:var(--text-3)}
.mega-card{
  background:linear-gradient(160deg,rgba(31,224,200,.14),rgba(124,92,255,.12));
  border:1px solid rgba(31,224,200,.28);
  border-radius:16px;padding:16px;
}
.mega-card b{display:block;font-size:15px;font-weight:600;margin-bottom:8px}
.mega-card p{font-size:13px;color:var(--text-2);line-height:1.7;margin:0 0 14px;max-width:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform .3s ease,filter .3s ease,box-shadow .3s ease,border-color .3s ease,background-color .3s ease;
}
.btn i{font-size:13px}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--violet));
  color:#04121A;
  box-shadow:0 10px 30px rgba(31,224,200,.26);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 14px 40px rgba(31,224,200,.38)}
.btn-ghost{
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:var(--text);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(31,224,200,.6);background:rgba(31,224,200,.08)}
.btn-coral{
  background:linear-gradient(135deg,var(--coral),#FF7A5C);
  color:#fff;
  box-shadow:0 10px 30px rgba(255,77,109,.3);
}
.btn-coral:hover{transform:translateY(-2px);filter:brightness(1.08);box-shadow:0 14px 40px rgba(255,77,109,.42)}

/* ---------- banner ---------- */
.banner{position:relative;overflow:hidden;border-bottom:1px solid var(--line-soft)}
.banner-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.3;
}
.banner::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(720px 320px at 18% 0%,rgba(31,224,200,.22),transparent 70%),
    linear-gradient(180deg,rgba(5,7,14,.35),rgba(5,7,14,.94));
}
.banner-inner{position:relative;z-index:2;padding:52px 0 46px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand)}
.crumb i{font-size:9px;opacity:.6}
.crumb .now{color:var(--text-2)}
.banner h1{
  font-size:clamp(30px,4.6vw,52px);
  font-weight:700;
  line-height:1.2;
  max-width:20em;
  margin-bottom:16px;
}
.banner h1 em{font-style:normal;background:linear-gradient(120deg,var(--brand),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.banner-sub{font-size:16px;color:var(--text-2);max-width:38em;margin-bottom:22px}
.banner-meta{display:flex;flex-wrap:wrap;gap:10px}
.pill{
  display:inline-flex;align-items:center;gap:7px;
  height:32px;padding:0 14px;border-radius:var(--r-pill);
  font-size:12px;color:var(--brand);
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
}
.pill i{font-size:11px}
.pill.coral{color:#FFD9E1;background:linear-gradient(135deg,rgba(255,77,109,.9),rgba(255,122,92,.85));border-color:transparent}

/* ---------- notice bar ---------- */
.notice{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin:26px 0 0;
  padding:14px 18px;border-radius:var(--r-sm);
  background:linear-gradient(90deg,rgba(31,224,200,.10),rgba(124,92,255,.08));
  border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.notice b{color:var(--brand);font-weight:600}
.notice .sep{color:var(--text-3)}

/* ---------- layout ---------- */
.layout{
  display:grid;
  grid-template-columns:256px minmax(0,1fr);
  gap:28px;
  padding:56px 0 8px;
  align-items:start;
}
.side{position:sticky;top:96px;display:grid;gap:16px}
.side-card{
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:18px;
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  position:relative;
}
.side-card::before{
  content:"";position:absolute;left:18px;right:18px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,200,.7),transparent);
}
.side-title{font-size:12px;letter-spacing:.12em;color:var(--text-3);margin-bottom:12px}
.side-nav{display:grid;gap:4px}
.side-nav a{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;border-radius:12px;
  font-size:14px;color:var(--text-2);
  border:1px solid transparent;
}
.side-nav a i{color:var(--brand);font-size:12px;width:14px;text-align:center}
.side-nav a:hover{background:rgba(255,255,255,.06);color:var(--text)}
.side-nav a.current{
  background:rgba(31,224,200,.10);
  border-color:rgba(31,224,200,.36);
  color:var(--text);
}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;
  height:30px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;color:var(--text-2);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  transition:all .3s ease;
}
.chip:hover{color:var(--brand);border-color:rgba(31,224,200,.55);background:rgba(31,224,200,.08)}
.side-cta{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid rgba(31,224,200,.28);
  background:linear-gradient(165deg,rgba(31,224,200,.14),rgba(124,92,255,.12));
}
.side-cta .thumb{aspect-ratio:4/3;overflow:hidden;position:relative}
.side-cta .thumb img{width:100%;height:100%;object-fit:cover;opacity:.85}
.side-cta .body{padding:16px}
.side-cta b{display:block;font-size:15px;font-weight:600;margin-bottom:6px}
.side-cta p{font-size:13px;color:var(--text-2);line-height:1.7;margin:0 0 14px;max-width:none}

/* ---------- list column ---------- */
.col-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:12px;margin-bottom:18px;
}
.col-head h2{font-size:clamp(22px,2.6vw,30px)}
.col-head p{font-size:14px;color:var(--text-2);margin:6px 0 0;max-width:38em}
.link-more{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.link-more:hover{color:#8BF6E7}
.link-more i{font-size:11px}

.list{display:grid;gap:18px}
.list-card{
  display:grid;
  grid-template-columns:248px minmax(0,1fr);
  gap:20px;
  padding:18px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  position:relative;
  transition:transform .35s ease,border-color .35s ease,box-shadow .35s ease,background-color .35s ease;
}
.list-card::before{
  content:"";position:absolute;left:18px;right:18px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(31,224,200,.6),transparent);
  opacity:.6;
}
.list-card:hover{
  transform:translateY(-4px);
  border-color:rgba(31,224,200,.5);
  background:rgba(255,255,255,.075);
  box-shadow:var(--shadow);
}
.thumb-16x9{
  aspect-ratio:16/9;
  border-radius:var(--r-img);
  overflow:hidden;
  background:var(--bg-2);
  border:1px solid var(--line-soft);
  position:relative;
}
.thumb-16x9 img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.list-card:hover .thumb-16x9 img{transform:scale(1.04)}
.thumb-16x9 .tag{
  position:absolute;left:10px;top:10px;
  height:26px;padding:0 10px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;
  font-size:11px;font-weight:600;color:#fff;
  background:linear-gradient(135deg,rgba(255,77,109,.95),rgba(255,122,92,.9));
}
.card-body{display:flex;flex-direction:column;min-width:0}
.card-kicker{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;color:var(--brand);
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:4px 12px;align-self:flex-start;margin-bottom:10px;
}
.card-body h3{
  font-size:19px;font-weight:600;line-height:1.45;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.list-card:hover h3{color:#CFFBF3}
.card-desc{
  font-size:14px;color:var(--text-2);line-height:1.8;margin:0 0 14px;max-width:42em;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  padding-top:12px;border-top:1px solid var(--line-soft);
  font-size:12px;color:var(--text-3);
}
.card-foot span{display:inline-flex;align-items:center;gap:6px}
.card-foot i{font-size:11px;color:var(--brand-deep)}
.card-foot .go{margin-left:auto;color:var(--brand);font-size:13px;display:inline-flex;align-items:center;gap:6px}
.list-card:hover .card-foot .go{color:#8BF6E7}

/* ---------- steps ---------- */
.section{padding:72px 0 0}
.section-head{max-width:640px;margin-bottom:34px}
.section-head h2{font-size:clamp(24px,3vw,36px);margin-bottom:12px}
.section-head p{color:var(--text-2);font-size:15px;margin:0}
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.step{
  position:relative;overflow:hidden;
  padding:26px 22px 22px;
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  transition:transform .35s ease,border-color .35s ease,box-shadow .35s ease;
}
.step:hover{transform:translateY(-4px);border-color:rgba(31,224,200,.5);box-shadow:var(--shadow)}
.step .num{
  position:absolute;right:14px;top:2px;
  font-size:76px;font-weight:700;line-height:1;
  color:rgba(255,255,255,.05);
  letter-spacing:-.04em;
}
.step h3{font-size:20px;margin-bottom:10px;position:relative}
.step p{font-size:14px;color:var(--text-2);line-height:1.8;margin:0 0 14px;position:relative;max-width:none}
.step .mini{display:grid;gap:8px;position:relative}
.step .mini li{display:flex;align-items:flex-start;gap:8px;font-size:13px;color:var(--text-2)}
.step .mini i{color:var(--brand);font-size:11px;margin-top:6px}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;display:grid;gap:12px}
.faq{
  border-radius:var(--r-card);
  background:var(--glass);
  border:1px solid var(--line);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  position:relative;
  overflow:hidden;
  transition:border-color .35s ease,background-color .35s ease;
}
.faq::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--brand),var(--violet));
  box-shadow:0 0 18px rgba(31,224,200,.6);
  opacity:0;transition:opacity .3s ease;
}
.faq[open]{border-color:rgba(31,224,200,.45);background:rgba(255,255,255,.075)}
.faq[open]::before{opacity:1}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  font-size:16px;font-weight:600;color:var(--text);
  min-height:44px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";flex:0 0 auto;
  width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;
  font-size:16px;font-weight:500;
  color:var(--text-3);
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
  transition:all .3s ease;
}
.faq[open] summary{color:#CFFBF3}
.faq[open] summary::after{content:"−";color:#04121A;background:linear-gradient(135deg,var(--brand),var(--violet));border-color:transparent}
.faq .answer{padding:0 22px 20px;color:var(--text-2);font-size:15px;line-height:1.85}
.faq .answer p:last-child{margin-bottom:0}

/* ---------- CTA ---------- */
.cta{
  position:relative;overflow:hidden;
  margin-top:80px;
  border-radius:26px;
  border:1px solid rgba(31,224,200,.3);
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  box-shadow:var(--shadow),0 0 0 1px rgba(124,92,255,.08) inset;
}
.cta-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  opacity:.24;
}
.cta::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(31,224,200,.18),rgba(124,92,255,.14) 55%,rgba(255,77,109,.12));
}
.cta-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.25fr .75fr;gap:28px;
  align-items:center;
  padding:40px;
}
.cta h2{font-size:clamp(22px,2.8vw,34px);margin-bottom:12px}
.cta p{color:var(--text-2);font-size:15px;margin-bottom:22px;max-width:36em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-media{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3}
.cta-media img{width:100%;height:100%;object-fit:cover}

/* ---------- footer ---------- */
.site-footer{
  margin-top:96px;
  border-top:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(10,15,28,.5),rgba(5,7,14,.95));
  position:relative;
  z-index:1;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;
  padding:56px 0 36px;
}
.footer-brand p{font-size:14px;color:var(--text-2);margin:16px 0 18px;max-width:34em;line-height:1.8}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{
  display:inline-flex;align-items:center;
  height:30px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;color:var(--text-2);
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
}
.tag-cloud a:hover{color:var(--brand);border-color:rgba(31,224,200,.55);background:rgba(31,224,200,.08)}
.footer-title{font-size:13px;font-weight:600;color:var(--text);margin-bottom:16px;letter-spacing:.06em}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:var(--text-2)}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 0 28px;
  border-top:1px solid var(--line-soft);
  font-size:13px;color:var(--text-3);
}

/* ---------- drawer ---------- */
.drawer{
  display:none;
  position:fixed;top:0;right:0;bottom:0;z-index:90;
  width:88%;max-width:360px;
  background:#080D18;
  border-left:1px solid var(--line);
  padding:22px 20px 28px;
  transform:translateX(100%);
  transition:transform .3s ease;
  overflow-y:auto;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-links{display:grid;gap:6px;margin-bottom:22px}
.drawer-links a{
  display:flex;align-items:center;gap:10px;
  padding:13px 14px;border-radius:14px;
  font-size:15px;color:var(--text-2);
  background:rgba(255,255,255,.04);
  border:1px solid var(--line-soft);
  min-height:44px;
}
.drawer-links a.current{color:var(--text);border-color:rgba(31,224,200,.45);background:rgba(31,224,200,.1)}
.drawer-links a i{color:var(--brand);font-size:13px;width:16px;text-align:center}
.drawer-foot{position:sticky;bottom:0}
.drawer-mask{
  position:fixed;inset:0;z-index:85;
  background:rgba(3,5,10,.66);
  backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s;
}
body.nav-open .drawer{transform:translateX(0)}
body.nav-open .drawer-mask{opacity:1;visibility:visible}
.burger{
  display:none;
  width:42px;height:42px;border-radius:12px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  place-items:center;gap:4px;
}
.burger span{display:block;width:17px;height:2px;border-radius:2px;background:var(--text-2);transition:background-color .3s ease}
.burger:hover span{background:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .nav-menu{gap:0}
  .nav-link{padding:10px 11px;font-size:14px}
  .list-card{grid-template-columns:210px minmax(0,1fr)}
}
@media (max-width:1023px){
  .nav-menu{display:none}
  .burger{display:grid}
  .drawer{display:block}
  .mega{display:none}
  .layout{grid-template-columns:1fr;padding-top:40px}
  .side{position:static}
  .steps{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;padding:30px 24px}
  .cta-media{order:-1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding:44px 0 28px}
  .section{padding:56px 0 0}
  .site-footer{margin-top:72px}
}
@media (max-width:767px){
  .banner-inner{padding:38px 0 34px}
  .list-card{grid-template-columns:1fr}
  .thumb-16x9{aspect-ratio:16/9}
  .col-head{align-items:flex-start}
  .cta{margin-top:60px;border-radius:20px}
  .footer-grid{grid-template-columns:1fr}
  .notice{padding:12px 14px}
}
@media (max-width:520px){
  .nav-right .btn-sm{display:none}
  .banner h1{font-size:clamp(26px,7vw,34px)}
  .card-body h3{font-size:17px}
  .icon-btn{width:40px;height:40px}
  .cta-inner{padding:24px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
        --bg-0:#05070E;
        --bg-1:#0A0F1C;
        --bg-2:#111A2E;
        --brand:#1FE0C8;
        --brand-deep:#0E9E96;
        --violet:#7C5CFF;
        --coral:#FF4D6D;
        --text:#F2F6FF;
        --muted:#A7B3C9;
        --weak:#66738C;
        --line:rgba(255,255,255,.10);
        --glass:rgba(255,255,255,.06);
        --radius:20px;
        --shadow:0 20px 60px rgba(0,0,0,.55);
        --glow:0 10px 34px rgba(31,224,200,.28);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
        margin:0;padding-top:72px;
        background:var(--bg-0);color:var(--text);
        font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
        font-size:16px;line-height:1.85;
        -webkit-font-smoothing:antialiased;
        overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
    ul{margin:0;padding:0;list-style:none}
    h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3}
    p{margin:0 0 14px;max-width:46em;color:var(--muted)}
    ::selection{background:rgba(31,224,200,.3)}
    ::-webkit-scrollbar{width:10px;height:10px}
    ::-webkit-scrollbar-track{background:var(--bg-0)}
    ::-webkit-scrollbar-thumb{background:rgba(124,92,255,.35);border-radius:999px;border:2px solid var(--bg-0)}
    ::-webkit-scrollbar-thumb:hover{background:rgba(31,224,200,.45)}
    a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:8px}

    .wrap{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}
    @media (min-width:1024px){.wrap{padding:0 32px}}

    /* ============ 顶部导航 ============ */
    .site-header{
        position:fixed;top:0;left:0;right:0;z-index:80;height:72px;
        background:rgba(5,7,14,.72);
        backdrop-filter:blur(14px) saturate(140%);
        -webkit-backdrop-filter:blur(14px) saturate(140%);
        border-bottom:1px solid transparent;
        transition:background .3s ease,border-color .3s ease,backdrop-filter .3s ease;
    }
    .site-header.is-scrolled{
        background:rgba(5,7,14,.92);
        backdrop-filter:blur(20px) saturate(150%);
        -webkit-backdrop-filter:blur(20px) saturate(150%);
        border-bottom-color:rgba(31,224,200,.22);
    }
    .nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
    .logo-mark{
        display:grid;place-items:center;width:40px;height:40px;border-radius:14px;
        font-weight:700;font-size:15px;letter-spacing:.02em;color:#04110F;
        background:linear-gradient(135deg,var(--brand),var(--violet));
        box-shadow:var(--glow);
    }
    .logo-text{display:flex;flex-direction:column;line-height:1.18}
    .logo-text b{font-size:15px;font-weight:600;letter-spacing:.01em}
    .logo-text span{font-size:11px;color:var(--weak);letter-spacing:.1em}

    .nav-menu{display:none;align-items:center;gap:2px}
    @media (min-width:1024px){.nav-menu{display:flex}}
    .nav-link{
        position:relative;display:inline-flex;align-items:center;gap:6px;
        height:44px;padding:0 14px;border-radius:12px;
        font-size:14.5px;color:var(--muted);transition:color .25s ease,background .25s ease;
    }
    .nav-link:hover{color:var(--text);background:rgba(255,255,255,.06)}
    .nav-link.active{color:var(--brand)}
    .nav-link.active::after{
        content:"";position:absolute;left:14px;right:14px;bottom:7px;height:2px;border-radius:2px;
        background:linear-gradient(90deg,var(--brand),var(--violet));
    }
    .nav-link i{font-size:10px;opacity:.7}

    .mega-wrap{position:relative}
    .mega{
        position:absolute;top:calc(100% + 12px);left:50%;
        transform:translate(-50%,8px);
        width:860px;display:grid;grid-template-columns:1.1fr 1.1fr .95fr;
        padding:22px;border-radius:20px;
        background:rgba(10,15,28,.95);
        backdrop-filter:blur(18px) saturate(140%);
        -webkit-backdrop-filter:blur(18px) saturate(140%);
        border:1px solid var(--line);
        box-shadow:var(--shadow);
        opacity:0;visibility:hidden;transition:opacity .2s ease,transform .2s ease,visibility .2s;
        z-index:90;
    }
    .mega-wrap:hover .mega,.mega-wrap:focus-within .mega{opacity:1;visibility:visible;transform:translate(-50%,0)}
    .mega-col{padding:0 18px;border-right:1px solid rgba(255,255,255,.07)}
    .mega-col:last-child{border-right:0;padding-right:0}
    .mega-col:first-child{padding-left:0}
    .mega-title{font-size:12px;letter-spacing:.14em;color:var(--weak);margin-bottom:12px}
    .mega-list{display:grid;gap:2px}
    .mega-list a{
        display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:12px;
        font-size:13.8px;color:var(--muted);transition:.22s ease;
    }
    .mega-list a:hover{background:rgba(255,255,255,.06);color:var(--brand)}
    .mega-list i{color:var(--brand);font-size:12px;width:15px;text-align:center}
    .mega-mini{display:flex;gap:12px;align-items:center;padding:10px;border-radius:14px;transition:background .25s ease}
    .mega-mini:hover{background:rgba(255,255,255,.06)}
    .mega-mini .pic{width:58px;height:44px;border-radius:10px;object-fit:cover;flex:0 0 auto;background:var(--bg-2)}
    .mega-mini span{display:block;min-width:0}
    .mega-mini b{display:block;font-size:13.4px;font-weight:600;line-height:1.45;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .mega-mini em{font-style:normal;font-size:12px;color:var(--weak)}
    .mega-card{
        padding:18px;border-radius:16px;
        background:linear-gradient(160deg,rgba(31,224,200,.13),rgba(124,92,255,.10));
        border:1px solid rgba(31,224,200,.24);
    }
    .mega-card b{display:block;font-size:14.5px;margin-bottom:8px}
    .mega-card p{margin:0 0 16px;font-size:13px;line-height:1.72;color:var(--muted)}

    .nav-right{display:flex;align-items:center;gap:10px}
    .icon-btn{
        display:none;width:44px;height:44px;border-radius:14px;
        align-items:center;justify-content:center;
        color:var(--muted);background:rgba(255,255,255,.05);
        border:1px solid var(--line);transition:.25s ease;
    }
    @media (min-width:1024px){.icon-btn{display:inline-flex}}
    .icon-btn:hover{color:var(--brand);border-color:rgba(31,224,200,.5)}
    .menu-btn{
        display:inline-flex;width:44px;height:44px;border-radius:14px;
        align-items:center;justify-content:center;
        color:var(--text);background:rgba(255,255,255,.05);
        border:1px solid var(--line);transition:.25s ease;
    }
    .menu-btn:hover{color:var(--brand);border-color:rgba(31,224,200,.5)}
    @media (min-width:1024px){.menu-btn{display:none}}
    .nav-cta{display:none}
    @media (min-width:640px){.nav-cta{display:inline-flex}}

    .drawer{
        position:fixed;top:0;right:0;bottom:0;width:88%;max-width:380px;z-index:120;
        padding:24px 20px 28px;display:flex;flex-direction:column;gap:6px;
        background:rgba(10,15,28,.97);
        backdrop-filter:blur(20px);
        -webkit-backdrop-filter:blur(20px);
        border-left:1px solid var(--line);
        transform:translateX(103%);
        transition:transform .3s ease;
        overflow-y:auto;
    }
    .drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
    .drawer a.d-link{
        display:flex;align-items:center;justify-content:space-between;
        min-height:48px;padding:0 14px;border-radius:14px;
        font-size:15px;color:var(--muted);background:rgba(255,255,255,.04);
        border:1px solid var(--line);transition:.22s ease;
    }
    .drawer a.d-link:hover,.drawer a.d-link.active{color:var(--brand);border-color:rgba(31,224,200,.45);background:rgba(31,224,200,.08)}
    .drawer-foot{margin-top:auto;padding-top:20px}
    .overlay{
        position:fixed;inset:0;z-index:110;background:rgba(3,5,10,.65);
        opacity:0;visibility:hidden;transition:.3s ease;
    }
    .overlay.open{opacity:1;visibility:visible}

    /* ============ 按钮 ============ */
    .btn{
        display:inline-flex;align-items:center;justify-content:center;gap:8px;
        height:48px;padding:0 24px;border-radius:999px;
        font-size:15px;font-weight:500;white-space:nowrap;
        transition:transform .28s ease,box-shadow .28s ease,filter .28s ease,border-color .28s ease,color .28s ease,background .28s ease;
    }
    .btn-sm{height:40px;padding:0 18px;font-size:14px}
    .btn-primary{color:#04110F;background:linear-gradient(135deg,var(--brand),var(--violet));box-shadow:var(--glow)}
    .btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 14px 40px rgba(31,224,200,.42)}
    .btn-ghost{color:var(--text);background:rgba(255,255,255,.06);border:1px solid var(--line);backdrop-filter:blur(12px)}
    .btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
    .btn-coral{color:#fff;background:linear-gradient(135deg,var(--coral),#FF8A5C);box-shadow:0 10px 30px rgba(255,77,109,.32)}
    .btn-coral:hover{filter:brightness(1.07);transform:translateY(-2px);box-shadow:0 16px 42px rgba(255,77,109,.45)}
    .btn-block{width:100%}
    .btn:active{transform:translateY(0)}

    /* ============ 横幅 ============ */
    .banner{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
    .banner-bg{
        position:absolute;inset:0;
        background-image:linear-gradient(180deg,rgba(5,7,14,.82),rgba(5,7,14,.95)),url(/assets/images/backpic/back-2.png);
        background-size:cover;background-position:center;
    }
    .banner-glow{
        position:absolute;top:-180px;left:50%;transform:translateX(-50%);
        width:920px;height:540px;pointer-events:none;
        background:radial-gradient(circle,rgba(31,224,200,.16),transparent 62%);
    }
    .banner-inner{position:relative;z-index:2;padding:58px 0 52px}
    .eyebrow{
        display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;
        border-radius:999px;background:rgba(255,255,255,.06);border:1px solid var(--line);
        font-size:12.5px;letter-spacing:.06em;color:var(--brand);
    }
    .dot{width:7px;height:7px;border-radius:50%;background:var(--brand);animation:pulse 2.2s infinite}
    @keyframes pulse{
        0%{box-shadow:0 0 0 0 rgba(31,224,200,.55)}
        70%{box-shadow:0 0 0 10px rgba(31,224,200,0)}
        100%{box-shadow:0 0 0 0 rgba(31,224,200,0)}
    }
    .banner h1{font-size:clamp(34px,5.6vw,60px);font-weight:700;letter-spacing:0;margin:16px 0 12px}
    .banner-sub{font-size:16px;color:var(--muted);max-width:44em;margin-bottom:0}
    .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--weak);margin-top:22px;flex-wrap:wrap}
    .crumb a:hover{color:var(--brand)}
    .crumb i{font-size:9px;opacity:.6}

    .notice{
        display:flex;gap:14px;align-items:flex-start;
        margin-top:26px;padding:16px 20px;max-width:860px;
        border-radius:16px;
        background:linear-gradient(90deg,rgba(255,77,109,.14),rgba(31,224,200,.06));
        border:1px solid rgba(255,77,109,.28);
        font-size:14px;
    }
    .notice > i{color:var(--coral);margin-top:5px;flex:0 0 auto}
    .notice b{color:var(--text);font-weight:600}
    .notice span{color:var(--muted)}

    /* ============ 板块 ============ */
    .section{padding:56px 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:28px}
    .section-head h2{font-size:clamp(24px,3vw,36px);font-weight:600}
    .section-head p{margin:8px 0 0;font-size:14.5px;color:var(--muted)}
    .more-link{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;min-height:44px}
    .more-link:hover{color:#7BF3E3}

    /* ============ 榜单 ============ */
    .rank-list{display:grid;gap:14px}
    .rank-row{
        position:relative;display:flex;flex-wrap:wrap;gap:18px;align-items:center;
        padding:16px;border-radius:20px;
        background:var(--glass);border:1px solid var(--line);
        transition:transform .32s ease,border-color .32s ease,box-shadow .32s ease;
        overflow:hidden;
    }
    .rank-row::before{
        content:"";position:absolute;top:0;left:0;right:0;height:1px;
        background:linear-gradient(90deg,transparent,rgba(31,224,200,.5),transparent);
    }
    .rank-row:hover{transform:translateY(-4px);border-color:rgba(31,224,200,.45);box-shadow:0 20px 50px rgba(0,0,0,.5)}
    .rank-no{
        flex:0 0 48px;display:grid;place-items:center;width:48px;height:48px;
        border-radius:16px;font-weight:700;font-size:17px;font-variant-numeric:tabular-nums;
    }
    .rank-no.top{color:#fff;background:linear-gradient(135deg,var(--coral),#FF9A6B);box-shadow:0 10px 26px rgba(255,77,109,.34)}
    .rank-no.normal{color:var(--muted);background:rgba(255,255,255,.06);border:1px solid var(--line)}
    .rank-thumb{
        flex:0 0 140px;width:140px;aspect-ratio:4/3;border-radius:14px;overflow:hidden;
        background:var(--bg-2);border:1px solid rgba(255,255,255,.07);
    }
    .rank-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
    .rank-row:hover .rank-thumb img{transform:scale(1.04)}
    .rank-body{flex:1 1 260px;min-width:0}
    .rank-body h3{font-size:17.5px;font-weight:600;margin-bottom:6px}
    .rank-body h3 a:hover{color:var(--brand)}
    .rank-body p{
        margin:0 0 12px;font-size:14px;color:var(--muted);line-height:1.7;
        display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
    }
    .rank-tags{display:flex;flex-wrap:wrap;gap:8px}
    .badge{
        display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;
        border-radius:999px;font-size:12px;color:var(--brand);
        background:rgba(255,255,255,.06);border:1px solid var(--line);white-space:nowrap;
    }
    .badge.coral{color:#fff;background:linear-gradient(135deg,rgba(255,77,109,.92),rgba(255,143,92,.92));border-color:transparent}
    .badge.violet{color:#C7BBFF;border-color:rgba(124,92,255,.34);background:rgba(124,92,255,.12)}
    .rank-heat{flex:1 1 190px;min-width:170px}
    .heat-track{height:6px;border-radius:999px;background:var(--bg-2);border:1px solid rgba(255,255,255,.06);overflow:hidden}
    .heat-track span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--violet));box-shadow:0 0 14px rgba(31,224,200,.5)}
    .heat-track span.hot{background:linear-gradient(90deg,var(--coral),#FF9A6B);box-shadow:0 0 14px rgba(255,77,109,.5)}
    .heat-meta{display:flex;justify-content:space-between;margin-top:8px;font-size:12.5px;color:var(--weak)}
    @media (max-width:639px){
        .rank-thumb{flex:0 0 104px;width:104px}
        .rank-heat{flex:1 1 100%}
    }

    /* ============ 评分口径 ============ */
    .weight-grid{display:grid;gap:20px;grid-template-columns:1fr}
    @media (min-width:640px){.weight-grid{grid-template-columns:repeat(2,1fr)}}
    @media (min-width:1024px){.weight-grid{grid-template-columns:repeat(4,1fr)}}
    .weight-card{
        position:relative;padding:22px;border-radius:20px;overflow:hidden;
        background:var(--glass);border:1px solid var(--line);
        transition:transform .32s ease,border-color .32s ease,box-shadow .32s ease;
    }
    .weight-card::before{
        content:"";position:absolute;top:0;left:0;right:0;height:1px;
        background:linear-gradient(90deg,transparent,rgba(31,224,200,.5),transparent);
    }
    .weight-card:hover{transform:translateY(-4px);border-color:rgba(31,224,200,.45);box-shadow:0 20px 50px rgba(0,0,0,.5)}
    .weight-card .w-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
    .weight-card i{font-size:18px;color:var(--brand)}
    .weight-card .w-num{font-size:26px;font-weight:700;color:var(--text);font-variant-numeric:tabular-nums}
    .weight-card h3{font-size:17px;margin-bottom:8px}
    .weight-card p{font-size:14px;margin:0;line-height:1.78}

    /* ============ 使用步骤 ============ */
    .step-grid{display:grid;gap:20px;grid-template-columns:1fr;counter-reset:step}
    @media (min-width:900px){.step-grid{grid-template-columns:repeat(3,1fr)}}
    .step-card{
        position:relative;padding:24px;border-radius:20px;
        background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
        border:1px solid var(--line);
        transition:transform .32s ease,border-color .32s ease;
    }
    .step-card:hover{transform:translateY(-4px);border-color:rgba(124,92,255,.5)}
    .step-card .s-no{
        font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--violet);
        display:inline-block;margin-bottom:14px;
    }
    .step-card h3{font-size:18px;margin-bottom:10px}
    .step-card p{font-size:14px;margin:0;line-height:1.8}
    .step-card .s-line{margin-top:16px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--brand),transparent)}

    /* ============ FAQ ============ */
    .faq-wrap{max-width:880px;margin:0 auto}
    .faq{border-radius:20px;margin-bottom:14px;overflow:hidden;background:var(--glass);border:1px solid var(--line);transition:border-color .3s ease,box-shadow .3s ease}
    .faq[open]{border-color:rgba(31,224,200,.45);box-shadow:0 18px 44px rgba(0,0,0,.46)}
    .faq summary{
        position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;
        min-height:60px;padding:18px 22px;cursor:pointer;list-style:none;
        font-size:16px;font-weight:500;color:var(--text);transition:color .28s ease;
    }
    .faq summary::-webkit-details-marker{display:none}
    .faq summary::before{
        content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:3px;
        background:linear-gradient(180deg,var(--brand),var(--violet));
        opacity:0;transition:opacity .28s ease;
    }
    .faq[open] summary::before{opacity:1;box-shadow:0 0 16px rgba(31,224,200,.6)}
    .faq[open] summary{color:var(--brand)}
    .faq summary i{font-size:13px;color:var(--weak);transition:color .28s ease}
    .faq[open] summary i{color:var(--brand)}
    .faq .faq-body{padding:0 22px 22px;font-size:15px;color:var(--muted);line-height:1.85;max-width:46em}

    /* ============ CTA ============ */
    .cta{
        position:relative;overflow:hidden;border-radius:24px;
        border:1px solid rgba(31,224,200,.3);
        background:
            radial-gradient(120% 140% at 12% 0%,rgba(31,224,200,.20),transparent 55%),
            radial-gradient(120% 140% at 92% 100%,rgba(124,92,255,.22),transparent 58%),
            rgba(10,15,28,.9);
        box-shadow:0 26px 70px rgba(0,0,0,.55);
        padding:32px;
        display:grid;gap:26px;align-items:center;
        grid-template-columns:1fr;
    }
    @media (min-width:900px){.cta{grid-template-columns:200px 1fr auto;padding:38px}}
    .cta-pic{aspect-ratio:4/3;border-radius:16px;overflow:hidden;background:var(--bg-2);border:1px solid rgba(255,255,255,.10)}
    .cta-pic img{width:100%;height:100%;object-fit:cover}
    .cta h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
    .cta p{margin:0;font-size:14.5px;color:var(--muted);max-width:44em}
    .cta-actions{display:flex;flex-wrap:wrap;gap:12px}

    /* ============ 页脚 ============ */
    .site-footer{border-top:1px solid var(--line);background:var(--bg-1);margin-top:24px}
    .footer-grid{
        display:grid;gap:32px;grid-template-columns:1fr;padding:56px 0 40px;
    }
    @media (min-width:768px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr}}
    .footer-brand p{margin:16px 0 18px;font-size:14px;color:var(--muted);max-width:34em}
    .footer-title{font-size:13px;letter-spacing:.12em;color:var(--weak);margin-bottom:16px}
    .footer-links{display:grid;gap:2px}
    .footer-links a{
        display:inline-flex;align-items:center;min-height:40px;font-size:14px;color:var(--muted);
        transition:color .22s ease,transform .22s ease;
    }
    .footer-links a:hover{color:var(--brand);transform:translateX(3px)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
    .tag-cloud a{
        display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:999px;
        font-size:12px;color:var(--muted);background:rgba(255,255,255,.05);
        border:1px solid var(--line);transition:.22s ease;
    }
    .tag-cloud a:hover{color:var(--brand);border-color:rgba(31,224,200,.5);background:rgba(31,224,200,.08)}
    .footer-bottom{
        display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
        padding:20px 0 26px;border-top:1px solid var(--line);
        font-size:13px;color:var(--weak);
    }

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