/* roulang page: index */
:root{
  --brand-1:#6A3DF5;
  --brand-2:#B23BFF;
  --brand-3:#12D6C0;
  --accent:#FF6B3D;
  --bg:#F7F5FC;
  --surface:#FFFFFF;
  --night:#141024;
  --ink:#17131F;
  --ink-2:#4B4560;
  --ink-3:#8B85A0;
  --line:#E9E5F5;
  --soft:#F1EBFF;
  --grad-brand:linear-gradient(120deg,#6A3DF5 0%,#B23BFF 55%,#FF6B3D 105%);
  --grad-cool:linear-gradient(135deg,#6A3DF5,#12D6C0);
  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,19,31,.04),0 8px 24px -16px rgba(23,19,31,.18);
  --sh-2:0 18px 40px -18px rgba(106,61,245,.35);
  --sh-3:0 24px 56px -20px rgba(106,61,245,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --mono:ui-monospace,"SF Mono","Cascadia Mono",Consolas,"Courier New",monospace;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-1);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--brand-2);}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;font-size:15px;}
::selection{background:rgba(106,61,245,.2);}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--brand-1);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-s) 0;
}
.skip-link:focus{left:0;color:#fff;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:16px;
  padding-right:16px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,252,.88);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:box-shadow .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.95);
  border-bottom-color:var(--line);
  box-shadow:0 12px 32px -24px rgba(23,19,31,.45);
}
.header-inner{
  display:flex;align-items:center;gap:18px;
  height:76px;
  transition:height .24s var(--ease);
}
.site-header.is-scrolled .header-inner{height:62px;}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  position:relative;width:34px;height:34px;border-radius:12px;
  background-image:var(--grad-cool);
  box-shadow:var(--sh-2);
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;border-radius:7px;
  background:radial-gradient(circle at 32% 30%,#fff,rgba(255,255,255,.25));
}
.brand-name{font-size:17px;font-weight:800;letter-spacing:-.2px;color:var(--ink);white-space:nowrap;}

.main-nav{display:flex;align-items:center;gap:2px;margin-left:6px;}
.nav-link{
  display:inline-block;
  padding:8px 12px;border-radius:var(--r-pill);
  font-size:15px;font-weight:500;color:var(--ink-2);white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--brand-1);background:var(--soft);}
.nav-link.is-active{color:var(--brand-1);background:var(--soft);font-weight:600;}

.header-tools{margin-left:auto;display:flex;align-items:center;gap:12px;}

.nav-search{position:relative;}
.nav-search input{
  height:40px;width:186px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:#fff;
  padding:0 16px;
  color:var(--ink);
  transition:width .24s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.nav-search input::placeholder{color:var(--ink-3);}
.nav-search input:focus{
  outline:none;width:216px;
  border-color:var(--brand-1);
  box-shadow:0 0 0 4px rgba(106,61,245,.13);
}

.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:14px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  cursor:pointer;transition:.22s var(--ease);
}
.nav-toggle:hover{border-color:var(--brand-1);color:var(--brand-1);}
.nav-toggle svg{transition:transform .24s var(--ease);}
.nav-toggle.is-open svg{transform:rotate(90deg);}

.nav-drawer{display:none;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border-radius:var(--r-pill);
  border:1.5px solid transparent;
  font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;white-space:nowrap;text-decoration:none;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-position .35s var(--ease),color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;}
.btn:active{transform:scale(.98);}

.btn-primary{
  background-image:var(--grad-brand);
  background-size:180% 100%;
  background-position:0 0;
  color:#fff;
  box-shadow:var(--sh-2);
}
.btn-primary:hover{color:#fff;background-position:52% 0;transform:translateY(-2px);box-shadow:var(--sh-3);}

.btn-accent{
  background:var(--accent);color:#fff;
  box-shadow:0 16px 34px -18px rgba(255,107,61,.75);
}
.btn-accent:hover{color:#fff;background:#FF7C53;transform:translateY(-2px);box-shadow:0 22px 46px -20px rgba(255,107,61,.85);}

.btn-secondary{background:#fff;color:var(--brand-1);border-color:var(--brand-1);}
.btn-secondary:hover{background:var(--soft);color:var(--brand-1);transform:translateY(-2px);box-shadow:var(--sh-1);}

.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px);}

.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  color:#fff;
  background-color:var(--night);
  background-image:linear-gradient(115deg,rgba(20,16,36,.94) 0%,rgba(48,23,90,.88) 52%,rgba(20,16,36,.93) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  padding:56px 0 64px;
}
.hero::after{
  content:"";position:absolute;right:-12%;top:-32%;
  width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle,rgba(178,59,255,.45),transparent 62%);
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}

.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 16px;margin-bottom:20px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.2);
  font-size:13px;font-weight:600;color:#DCD2FF;letter-spacing:.02em;
}
.hero h1{
  font-size:clamp(28px,4.2vw,44px);
  font-weight:800;letter-spacing:-.5px;line-height:1.2;
  color:#fff;margin-bottom:16px;
}
.hero-sub{
  font-size:17px;line-height:1.7;
  color:rgba(255,255,255,.84);
  max-width:520px;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}

.hero-stats{display:flex;flex-wrap:wrap;gap:12px 28px;}
.hero-stats li{display:flex;flex-direction:column;gap:2px;}
.hero-stats strong{
  font-family:var(--mono);font-size:22px;font-weight:800;line-height:1.2;
  color:#fff;letter-spacing:-.4px;
}
.hero-stats span{font-size:12.5px;color:rgba(255,255,255,.62);}

.hero-search{display:none;}

.hero-visual{display:flex;justify-content:center;margin-top:40px;}

.poster-card{
  position:relative;
  width:100%;max-width:330px;
  aspect-ratio:9/16;
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.18);
  box-shadow:0 42px 90px -34px rgba(0,0,0,.85);
}
.poster-card img{width:100%;height:100%;object-fit:cover;}
.poster-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:38%;
  background:linear-gradient(180deg,rgba(255,255,255,.18),transparent);
  pointer-events:none;
}
.poster-card figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:44px 20px 22px;
  background:linear-gradient(180deg,transparent,rgba(15,10,28,.88));
  display:flex;flex-direction:column;gap:6px;
}
.poster-title{font-size:17px;font-weight:700;color:#fff;line-height:1.45;}
.poster-desc{font-size:13px;color:rgba(255,255,255,.72);}
.corner-badge{
  position:absolute;top:14px;right:14px;
  height:28px;padding:0 12px;
  display:inline-flex;align-items:center;
  border-radius:var(--r-pill);
  background-image:var(--grad-cool);
  border:4px solid #fff;
  font-family:var(--mono);font-size:12px;font-weight:800;color:#fff;
}
.duration{
  position:absolute;bottom:14px;left:14px;
  height:24px;padding:0 10px;
  display:inline-flex;align-items:center;
  border-radius:8px;
  background:rgba(0,0,0,.62);
  font-family:var(--mono);font-size:12px;color:#fff;
}

/* ---------- sections ---------- */
.section{padding:48px 0;}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:28px;
}
.eyebrow{
  font-size:13px;font-weight:700;letter-spacing:.1em;
  color:var(--brand-1);margin-bottom:8px;
}
.section-head h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;letter-spacing:-.3px;line-height:1.3;
  color:var(--ink);margin-bottom:8px;
}
.section-desc{font-size:15px;color:var(--ink-2);max-width:660px;}
.text-link{font-size:14px;font-weight:600;color:var(--brand-1);white-space:nowrap;}
.text-link:hover{color:var(--brand-2);}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;
  border-radius:var(--r-pill);
  font-family:var(--mono);font-size:12px;font-weight:800;letter-spacing:.01em;
  white-space:nowrap;
}
.badge-cool{background-image:var(--grad-cool);color:#fff;}
.badge-soft{background:var(--soft);color:var(--brand-1);}
.badge-night{background:rgba(20,16,36,.72);color:#fff;}

/* ---------- channel cards ---------- */
.channels-grid{margin:0 -12px;}
.channels-grid > .cell{padding:0 12px;margin-bottom:24px;}
.channel-card{
  display:flex;flex-direction:column;gap:14px;height:100%;
  padding:24px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.channel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#DCD2FA;}
.channel-icon{
  width:46px;height:46px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background-image:var(--grad-cool);color:#fff;
}
.channel-card h3{font-size:17px;font-weight:600;color:var(--ink);}
.channel-card p{font-size:14.5px;color:var(--ink-2);line-height:1.7;flex:1;}

/* ---------- reel ---------- */
.reel-track{
  display:flex;gap:20px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:4px 4px 18px;
  -webkit-overflow-scrolling:touch;
}
.reel-track::-webkit-scrollbar{height:8px;}
.reel-track::-webkit-scrollbar-thumb{background:#DDD4F6;border-radius:999px;}
.reel-track::-webkit-scrollbar-track{background:transparent;}
.reel-card{
  flex:0 0 22%;
  scroll-snap-align:start;
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.reel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#DCD2FA;}
.reel-cover{position:relative;aspect-ratio:3/4;overflow:hidden;}
.reel-cover img{width:100%;height:100%;object-fit:cover;transition:transform .28s var(--ease);}
.reel-card:hover .reel-cover img{transform:scale(1.04);}
.reel-cover .badge{position:absolute;top:12px;left:12px;}
.reel-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.reel-title{
  font-size:15.5px;font-weight:600;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.reel-card:hover .reel-title{color:var(--brand-1);}
.reel-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:8px;
  font-size:12.5px;color:var(--ink-3);font-family:var(--mono);
}
.reel-more{
  flex:0 0 14%;
  scroll-snap-align:start;
  display:flex;align-items:center;justify-content:center;text-align:center;
  padding:24px 16px;
  border:1px dashed #D8CEF5;
  border-radius:var(--r-l);
  background:linear-gradient(180deg,#FBF9FF,#F4F0FF);
  color:var(--brand-1);font-size:14.5px;font-weight:600;
  transition:.24s var(--ease);
}
.reel-more:hover{border-color:var(--brand-1);box-shadow:var(--sh-1);}

/* ---------- pick list ---------- */
.pick-list{border-top:1px solid var(--line);}
.pick-item{
  display:flex;align-items:flex-start;gap:20px;
  padding:22px 12px;
  border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.pick-item:hover{background:linear-gradient(90deg,rgba(106,61,245,.06),rgba(106,61,245,0) 72%);}
.pick-num{
  flex:0 0 auto;min-width:64px;
  font-family:var(--mono);font-size:34px;font-weight:800;line-height:1.1;
  letter-spacing:-1.5px;color:#CDC1F8;
  transition:color .22s var(--ease);
}
.pick-item:hover .pick-num{color:var(--brand-1);}
.pick-body{flex:1;display:flex;flex-direction:column;gap:8px;}
.pick-body h3{font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;}
.pick-body p{font-size:14.5px;color:var(--ink-2);}
.pick-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin-top:2px;}
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;
  font-size:12.5px;color:var(--ink-2);
}
.pick-side{flex:0 0 auto;display:flex;align-items:center;}

/* ---------- cards grid ---------- */
.cards-grid{margin:0 -12px;}
.cards-grid > .cell{padding:0 12px;margin-bottom:24px;}
.card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#DCD2FA;}
.card-cover{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:var(--soft);}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .28s var(--ease);}
.card:hover .card-cover img{transform:scale(1.04);}
.card-cover .badge{position:absolute;top:12px;left:12px;}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-title{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card:hover .card-title{color:var(--brand-1);}
.card-text{
  font-size:14.5px;color:var(--ink-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:6px;
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12.5px;color:var(--ink-3);font-family:var(--mono);
}

.empty-state{
  padding:52px 24px;text-align:center;
  border:1px dashed #D8CEF5;border-radius:var(--r-l);
  background:linear-gradient(180deg,#FCFBFF,#F5F1FF);
}
.empty-state svg{color:var(--brand-1);margin-bottom:14px;}
.empty-state p{font-size:15px;color:var(--ink-2);margin-bottom:18px;}

/* ---------- voices ---------- */
.voice-track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 16px;}
.voice-track::-webkit-scrollbar{height:8px;}
.voice-track::-webkit-scrollbar-thumb{background:#DDD4F6;border-radius:999px;}
.voice-card{
  flex:0 0 calc((100% - 40px)/3);
  scroll-snap-align:start;
  display:flex;flex-direction:column;gap:14px;
  padding:22px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.voice-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);}
.voice-head{display:flex;align-items:center;gap:12px;}
.avatar{
  width:40px;height:40px;flex:0 0 auto;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background-image:var(--grad-cool);color:#fff;
  font-size:15px;font-weight:700;
}
.voice-name{font-size:14px;font-weight:600;color:var(--ink);}
.voice-time{font-size:12.5px;color:var(--ink-3);font-family:var(--mono);}
.voice-text{font-size:14.5px;line-height:1.75;color:var(--ink-2);}
.voice-note{font-size:13px;color:var(--ink-3);margin-top:14px;}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:880px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item:hover{border-color:#DCD2FA;}
.faq-item.is-open{border-color:#D3C4FB;box-shadow:var(--sh-2);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  background:none;border:0;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--ink);text-align:left;
}
.faq-q:focus-visible{outline:2px solid var(--brand-1);outline-offset:-2px;}
.faq-icon{flex:0 0 auto;color:var(--brand-1);transition:transform .24s var(--ease);}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
.faq-a p{padding:0 22px 20px;font-size:15px;color:var(--ink-2);line-height:1.75;}
.faq-item.is-open .faq-a{max-height:360px;}

/* ---------- cta ---------- */
.cta-card{
  position:relative;overflow:hidden;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:32px;
  padding:42px;
  border-radius:var(--r-xl);
  background-image:var(--grad-brand);
  color:#fff;
  box-shadow:var(--sh-3);
}
.cta-card::after{
  content:"";position:absolute;right:-80px;bottom:-120px;
  width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.28),transparent 65%);
  pointer-events:none;
}
.cta-copy{position:relative;z-index:2;max-width:620px;}
.cta-copy h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:-.3px;color:#fff;margin-bottom:12px;}
.cta-copy p{font-size:15.5px;line-height:1.75;color:rgba(255,255,255,.88);}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;gap:14px;}
.cta-stat{
  font-family:var(--mono);font-size:15px;font-weight:800;
  padding:12px 24px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.36);
}
.btn-white{background:#fff;color:var(--brand-1);}
.btn-white:hover{background:#fff;color:var(--brand-2);transform:translateY(-2px);}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  margin-top:24px;
  padding-top:62px;
  background:var(--night);
  color:rgba(255,255,255,.72);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background-image:var(--grad-brand);
}
.footer-top{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:36px;padding-bottom:42px;
}
.footer-brand{display:flex;flex-direction:column;gap:14px;}
.footer-brand .brand-name{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.75;color:rgba(255,255,255,.6);max-width:320px;}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;
  font-size:13px;color:rgba(255,255,255,.48);
}

/* ---------- mobile tab ---------- */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:flex;
  background:rgba(255,255,255,.95);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-item{
  position:relative;flex:1;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:56px;font-size:11px;color:var(--ink-3);
  transition:color .2s var(--ease);
}
.tab-item:hover{color:var(--brand-1);}
.tab-item.is-active{color:var(--brand-1);font-weight:600;}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:28px;height:2px;border-radius:2px;background-image:var(--grad-brand);
}

/* ---------- responsive ---------- */
@media (min-width:640px){
  .container{padding-left:24px;padding-right:24px;}
  .section{padding:64px 0;}
}
@media (min-width:1024px){
  .container{padding-left:32px;padding-right:32px;}
  .section{padding:88px 0;}
  .hero{padding:84px 0 96px;}
  .hero-visual{justify-content:flex-end;margin-top:0;}
  .mobile-tab{display:none;}
}
@media (min-width:1280px){
  :root{--container:1280px;}
}
@media (max-width:1023px){
  body{padding-bottom:56px;}
  .nav-search input{width:150px;}
  .nav-search input:focus{width:168px;}
  .voice-card{flex:0 0 78%;}
  .reel-card{flex:0 0 40%;}
  .reel-more{flex:0 0 40%;}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-card{padding:32px;}
}
@media (max-width:767px){
  .main-nav{display:none;}
  .nav-search{display:none;}
  .header-tools .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-drawer{
    display:none;
    border-top:1px solid var(--line);
    background:#fff;
    padding:6px 0 14px;
  }
  .nav-drawer.is-open{display:block;}
  .nav-drawer a{
    display:block;padding:14px 20px;
    font-size:15px;color:var(--ink-2);
    border-bottom:1px solid var(--line);
  }
  .nav-drawer a:last-child{border-bottom:0;}
  .nav-drawer a.is-active{color:var(--brand-1);font-weight:600;background:var(--soft);}
  .hero-search{display:flex;gap:8px;margin-top:26px;}
  .hero-search input{
    flex:1;height:48px;border-radius:var(--r-pill);
    border:1px solid rgba(255,255,255,.28);
    background:rgba(255,255,255,.12);
    color:#fff;padding:0 18px;
  }
  .hero-search input::placeholder{color:rgba(255,255,255,.6);}
  .hero-search input:focus{outline:none;border-color:#fff;box-shadow:0 0 0 4px rgba(255,255,255,.16);}
  .selectors-grid{display:none;}
}
@media (max-width:639px){
  .section{padding:48px 0;}
  .reel-card{flex:0 0 72%;}
  .reel-more{flex:0 0 62%;}
  .voice-card{flex:0 0 86%;}
  .pick-num{font-size:28px;min-width:44px;}
  .pick-item{gap:14px;padding:20px 6px;}
  .footer-top{grid-template-columns:1fr;gap:26px;}
  .cta-card{padding:26px;border-radius:var(--r-l);}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .hero-stats{gap:14px 22px;}
  .poster-card{max-width:280px;aspect-ratio:3/4;}
}

/* roulang page: article */
:root{
  --brand-1:#6A3DF5;
  --brand-2:#B23BFF;
  --brand-3:#12D6C0;
  --accent:#FF6B3D;
  --bg:#F7F5FC;
  --surface:#FFFFFF;
  --night:#141024;
  --ink:#17131F;
  --ink-2:#4B4560;
  --ink-3:#8B85A0;
  --line:#E9E5F5;
  --soft:#F2EEFF;
  --grad-brand:linear-gradient(120deg,#6A3DF5 0%,#B23BFF 55%,#FF6B3D 105%);
  --grad-cool:linear-gradient(135deg,#6A3DF5,#12D6C0);
  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,19,31,.04),0 8px 24px -16px rgba(23,19,31,.18);
  --sh-2:0 18px 40px -18px rgba(106,61,245,.35);
  --sh-3:0 24px 56px -20px rgba(106,61,245,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px}
@media(min-width:640px){.container{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px}}
@media(min-width:1280px){.container{max-width:1280px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-stuck{box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;gap:18px;height:72px;transition:height .24s var(--ease)}
.site-header.is-stuck .header-inner{height:62px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.3px;white-space:nowrap;flex:none}
.brand-mark{
  position:relative;flex:none;width:32px;height:32px;border-radius:11px;
  background:var(--grad-brand);
  box-shadow:0 8px 18px -8px rgba(106,61,245,.85);
}
.brand-mark::after{content:"";position:absolute;inset:10px;border-radius:4px;background:rgba(255,255,255,.92)}
.brand:hover .brand-mark{transform:rotate(-6deg)}
.brand-mark{transition:transform .26s var(--ease)}

.main-nav{display:none;align-items:center;gap:2px;margin-left:6px}
@media(min-width:768px){.main-nav{display:flex}}
.nav-link{
  padding:8px 13px;border-radius:var(--r-pill);font-size:15px;color:var(--ink-2);
  transition:color .22s var(--ease),background .22s var(--ease),transform .22s var(--ease);
}
.nav-link:hover{color:var(--brand-1);background:var(--soft);transform:translateY(-1px)}
.nav-link.is-active{color:var(--brand-1);background:var(--soft);font-weight:600}

.header-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
.search-box{
  display:none;align-items:center;gap:8px;height:40px;padding:0 14px;
  border:1.5px solid var(--line);border-radius:var(--r-pill);background:#fff;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
@media(min-width:1024px){.search-box{display:flex}}
.search-box:focus-within{border-color:var(--brand-1);box-shadow:0 0 0 4px rgba(106,61,245,.12)}
.search-box svg{color:var(--ink-3);flex:none}
.search-box input{border:0;outline:none;background:transparent;width:150px;font-size:14.5px;color:var(--ink)}
.search-box input::placeholder{color:var(--ink-3)}

.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;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-position .45s var(--ease),background-color .22s var(--ease),color .22s var(--ease);
}
.btn:active{transform:scale(.98)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 12px 26px -14px rgba(255,107,61,.85)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px -14px rgba(255,107,61,.95)}
.btn-grad{background-image:var(--grad-brand);background-size:180% 100%;background-position:0% 50%;color:#fff;box-shadow:var(--sh-2)}
.btn-grad:hover{background-position:100% 50%;transform:translateY(-2px);box-shadow:var(--sh-3)}
.btn-outline{background:#fff;color:var(--brand-1);border:1.5px solid var(--brand-1)}
.btn-outline:hover{background:var(--soft);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.45)}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-block{width:100%}

.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;border:1.5px solid var(--line);background:#fff;color:var(--ink-2);
}
@media(min-width:768px){.menu-toggle{display:none}}
.menu-toggle:hover{color:var(--brand-1);border-color:#DCD2FF}

.nav-drawer{display:none;border-top:1px solid var(--line);background:#fff}
.nav-drawer.is-open{display:block}
@media(min-width:768px){.nav-drawer{display:none!important}}
.nav-drawer .container{padding-top:12px;padding-bottom:16px}
.nav-drawer a{
  display:block;padding:13px 4px;font-size:16px;color:var(--ink-2);border-bottom:1px solid var(--line);
}
.nav-drawer a:last-child{border-bottom:0}
.nav-drawer a:hover{color:var(--brand-1)}
.drawer-search{margin-top:14px;display:flex;align-items:center;gap:8px;height:48px;padding:0 16px;border:1.5px solid var(--line);border-radius:14px;background:#fff}
.drawer-search input{border:0;outline:none;background:transparent;width:100%;font-size:15px}

/* ============ 内页头部 ============ */
.article-hero{
  position:relative;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  padding:28px 0 34px;
  overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;left:0;top:24px;bottom:24px;width:4px;border-radius:0 4px 4px 0;
  background:var(--grad-brand);
}
@media(max-width:639px){.article-hero::before{display:none}}
.article-hero::after{
  content:"";position:absolute;right:-140px;top:-160px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(178,59,255,.16),rgba(106,61,245,0) 68%);
  pointer-events:none;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-3);position:relative;z-index:1}
.crumbs a:hover{color:var(--brand-1)}
.crumb-sep{color:#C9C3DA}
.crumb-mid{color:var(--ink-2)}
.crumb-current{color:var(--ink-3);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.hero-grid{display:grid;gap:24px;margin-top:22px;position:relative;z-index:1}
@media(min-width:1024px){.hero-grid{grid-template-columns:minmax(0,1fr) 300px;align-items:end;gap:40px}}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;margin-bottom:14px;
  border-radius:var(--r-pill);background:var(--soft);color:var(--brand-1);
  font-size:12.5px;font-weight:600;letter-spacing:.4px;
}
.article-title{
  font-size:clamp(26px,4vw,42px);
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.5px;
  color:var(--ink);
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:16px;font-size:13.5px;color:var(--ink-3)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#CFC8DE}
.author-chip{display:inline-flex;align-items:center;gap:8px;color:var(--ink-2)}
.author-avatar{
  width:28px;height:28px;border-radius:50%;background:var(--grad-cool);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex:none;
}
.hero-side{display:flex;flex-wrap:wrap;gap:10px}
@media(min-width:1024px){.hero-side{justify-content:flex-end}}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 11px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;
  font-family:ui-monospace,SFMono-Regular,"SF Mono",Consolas,monospace;
}
.badge-soft{background:var(--soft);color:var(--brand-1)}
.badge-cool{background:var(--grad-cool);color:#fff}
.badge-night{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.22)}

/* ============ 主体布局 ============ */
.page-body{padding:32px 0 8px}
@media(min-width:1024px){.page-body{padding:44px 0 12px}}
.article-layout{display:grid;gap:28px;grid-template-columns:minmax(0,1fr)}
@media(min-width:1024px){.article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:36px;align-items:start}}

.panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  box-shadow:var(--sh-1);
  padding:22px;
}
@media(min-width:1024px){.panel{padding:32px 34px}}

/* ============ 文章正文排版 ============ */
.article-body{max-width:760px;font-size:17px;line-height:1.9;color:var(--ink-2)}
.article-body>p:first-of-type{color:var(--ink);font-size:17.5px}
.article-body p{margin:0 0 1.4em}
.article-body h2{
  position:relative;
  margin:40px 0 16px;
  padding-left:14px;
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.35;
  font-weight:700;
  color:var(--ink);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:4px;background:var(--grad-brand);
}
.article-body h3{margin:28px 0 10px;font-size:18.5px;font-weight:600;color:var(--ink)}
.article-body h4{margin:22px 0 8px;font-size:16.5px;font-weight:600;color:var(--ink)}
.article-body strong{color:var(--ink);font-weight:600}
.article-body a{color:var(--brand-1);border-bottom:1px solid rgba(106,61,245,.35)}
.article-body a:hover{color:var(--brand-2);border-bottom-color:var(--brand-2)}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:1.35em;list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.5em}
.article-body li::marker{color:var(--brand-1)}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;
  background:#F4F0FF;border-left:3px solid var(--brand-1);
  border-radius:0 var(--r-m) var(--r-m) 0;color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-m);margin:6px auto}
.article-body figure{margin:24px 0}
.article-body figcaption{margin-top:10px;font-size:13px;color:var(--ink-3);text-align:center}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;overflow:hidden;border-radius:var(--r-m)}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body thead th{background:#F4F0FF;color:var(--ink);font-weight:600}
.article-body tbody tr:nth-child(even){background:#FAF8FF}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body code{
  padding:2px 6px;border-radius:6px;background:var(--soft);color:var(--brand-1);
  font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:14px;
}

.inline-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin:30px 0;padding:20px 22px;
  border-radius:var(--r-m);
  background:var(--night);
  color:#fff;
}
.inline-cta p{margin:0;font-size:15px;color:rgba(255,255,255,.78)}
.inline-cta strong{display:block;font-size:16.5px;color:#fff;font-weight:700;margin-bottom:2px}

.empty-state{
  display:flex;flex-direction:column;align-items:center;text-align:center;gap:14px;
  padding:56px 20px;border:1px dashed #D6CEEE;border-radius:var(--r-l);background:#FBFAFF;
}
.empty-state svg{color:var(--brand-1)}
.empty-state p{color:var(--ink-3);font-size:15px}

/* ============ 标签 ============ */
.tag-block{margin-top:34px;padding-top:26px;border-top:1px solid var(--line)}
.block-label{font-size:13px;font-weight:700;letter-spacing:.6px;color:var(--ink-3);margin-bottom:14px}
.tag-list{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;height:34px;padding:0 15px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;color:var(--ink-2);font-size:13.5px;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.tag:hover{background:var(--soft);color:var(--brand-1);border-color:#DCD2FF;transform:translateY(-2px)}

/* ============ 侧栏 ============ */
.side{display:grid;gap:20px}
@media(min-width:1024px){.side{position:sticky;top:96px}}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);padding:22px;
}
.side-title{display:flex;align-items:center;justify-content:space-between;font-size:16px;font-weight:700;color:var(--ink);margin-bottom:16px}
.side-title span.line{flex:1;height:1px;background:var(--line);margin-left:12px}
.side-list li+li{margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.side-item{display:block}
.side-item strong{display:block;font-size:14.5px;font-weight:600;color:var(--ink);line-height:1.55;transition:color .22s var(--ease)}
.side-item:hover strong{color:var(--brand-1)}
.side-item em{display:block;margin-top:6px;font-size:12.5px;font-style:normal;color:var(--ink-3)}
.side-index{
  display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;margin-right:8px;
  border-radius:7px;background:var(--soft);color:var(--brand-1);
  font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px;font-weight:700;
}
.subscribe-card{background:var(--night);border-color:transparent;color:#fff}
.subscribe-card .side-title{color:#fff}
.subscribe-card .side-title span.line{background:rgba(255,255,255,.16)}
.subscribe-card p{font-size:13.5px;color:rgba(255,255,255,.72);margin-bottom:16px}
.field-label{display:block;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:8px}
.field-input{
  width:100%;height:48px;padding:0 14px;border-radius:12px;border:1.5px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.08);color:#fff;outline:none;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.field-input::placeholder{color:rgba(255,255,255,.42)}
.field-input:focus{border-color:var(--brand-3);box-shadow:0 0 0 4px rgba(18,214,192,.18)}
.form-tip{margin-top:10px;font-size:12.5px;color:var(--brand-3);min-height:18px}

/* ============ 相关推荐 ============ */
.section{margin-top:44px}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:22px}
.section-head h2{font-size:clamp(20px,2.4vw,28px);font-weight:700;letter-spacing:-.3px}
.section-head h2 em{font-style:normal;color:var(--brand-1)}
.section-head p{font-size:14px;color:var(--ink-3);margin-top:6px}
.rec-grid{--gut:20px}
.rec-grid .cell{margin-bottom:20px}
.rec-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-l);box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#DCD2FF}
.rec-cover{overflow:hidden;aspect-ratio:16/10;background:#EFEBFB}
.rec-cover img{width:100%;height:100%;object-fit:cover;transition:transform .26s var(--ease)}
.rec-card:hover .rec-cover img{transform:scale(1.04)}
.rec-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.rec-tag{font-size:12.5px;font-weight:700;color:var(--brand-1);letter-spacing:.4px}
.rec-title{font-size:16.5px;font-weight:600;line-height:1.5;color:var(--ink);transition:color .22s var(--ease)}
.rec-card:hover .rec-title{color:var(--brand-1)}
.rec-desc{font-size:14px;line-height:1.7;color:var(--ink-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rec-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--ink-3);font-family:ui-monospace,SFMono-Regular,Consolas,monospace}

/* ============ 上下篇 ============ */
.pager{display:grid;gap:16px;margin-top:24px}
@media(min-width:640px){.pager{grid-template-columns:1fr 1fr}}
.pager a{
  display:block;padding:20px 22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-m);box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.pager a:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#DCD2FF}
.pager span{display:block;font-size:12.5px;color:var(--ink-3);margin-bottom:8px}
.pager strong{font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.55}
.pager a:hover strong{color:var(--brand-1)}

/* ============ CTA ============ */
.cta-wrap{margin:48px 0 8px}
.cta-card{
  position:relative;overflow:hidden;
  display:grid;gap:22px;
  padding:34px 26px;
  border-radius:var(--r-xl);
  background:var(--night);
  box-shadow:0 30px 70px -34px rgba(20,16,36,.85);
  border-top:2px solid transparent;
  background-image:linear-gradient(var(--night),var(--night)),var(--grad-brand);
  background-origin:border-box;
  background-clip:padding-box,border-box;
}
@media(min-width:768px){.cta-card{grid-template-columns:minmax(0,1fr) auto;align-items:center;padding:44px 46px}}
.cta-card::after{
  content:"";position:absolute;right:-90px;bottom:-140px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(106,61,245,.55),rgba(106,61,245,0) 68%);pointer-events:none;
}
.cta-card h2{position:relative;font-size:clamp(21px,2.6vw,30px);font-weight:800;color:#fff;letter-spacing:-.4px;line-height:1.3}
.cta-card p{position:relative;margin-top:12px;font-size:15px;color:rgba(255,255,255,.72);max-width:54ch}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px}
@media(max-width:767px){.cta-actions .btn{width:100%}}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:64px;
  background:var(--night);
  color:rgba(255,255,255,.72);
  border-top:1px solid transparent;
  background-image:linear-gradient(var(--night),var(--night)),var(--grad-brand);
  background-origin:border-box;
  background-clip:padding-box,border-box;
  padding:52px 0 130px;
}
@media(min-width:1024px){.site-footer{padding:56px 0 32px}}
.footer-top{display:grid;gap:32px}
@media(min-width:640px){.footer-top{grid-template-columns:1fr 1fr}}
@media(min-width:1024px){.footer-top{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}}
.footer-brand .brand{color:#fff;font-size:17px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:38ch}
.footer-title{font-size:14px;font-weight:700;color:#fff;letter-spacing:.4px;margin-bottom:16px}
.footer-links li+li{margin-top:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);transition:color .22s var(--ease),padding-left .22s var(--ease)}
.footer-links a:hover{color:#fff;padding-left:4px}
.footer-bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 移动端底部 Tab ============ */
.tab-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:flex;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
@media(min-width:1024px){.tab-bar{display:none}}
.tab-item{
  position:relative;flex:1;height:56px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;color:var(--ink-3);
  transition:color .22s var(--ease);
}
.tab-item svg{width:22px;height:22px}
.tab-item:hover{color:var(--brand-1)}
.tab-item.is-active{color:var(--brand-1);font-weight:600}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--grad-brand);
}
@media(max-width:1023px){
  body{padding-bottom:calc(64px + env(safe-area-inset-bottom));}
}

/* roulang page: category1 */
:root{
  --brand-1:#6A3DF5;
  --brand-2:#B23BFF;
  --brand-3:#12D6C0;
  --accent:#FF6B3D;
  --bg:#F7F5FC;
  --surface:#FFFFFF;
  --night:#141024;
  --ink:#17131F;
  --ink-2:#4B4560;
  --ink-3:#8B85A0;
  --line:#E9E5F5;
  --soft:#F1ECFF;
  --grad-brand:linear-gradient(120deg,#6A3DF5 0%,#B23BFF 55%,#FF6B3D 105%);
  --grad-cool:linear-gradient(135deg,#6A3DF5,#12D6C0);
  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,19,31,.04),0 8px 24px -16px rgba(23,19,31,.18);
  --sh-2:0 18px 40px -18px rgba(106,61,245,.35);
  --sh-3:0 24px 56px -20px rgba(106,61,245,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,"SF Mono",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand-1);
  outline-offset:2px;
  border-radius:6px;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:16px;
  padding-right:16px;
}
@media (min-width:640px){
  .container{padding-left:24px;padding-right:24px}
}
@media (min-width:1024px){
  .container{padding-left:32px;padding-right:32px}
}
@media (min-width:1280px){
  .container{max-width:1280px}
}
.section{padding:48px 0}
@media (min-width:640px){
  .section{padding:64px 0}
}
@media (min-width:1024px){
  .section{padding:88px 0}
}
.section-head{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-bottom:24px;
}
@media (min-width:768px){
  .section-head{
    flex-direction:row;
    align-items:flex-end;
    justify-content:space-between;
    gap:32px;
    margin-bottom:32px;
  }
}
.eyebrow{
  display:inline-block;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--brand-1);
  background:var(--soft);
  border-radius:var(--r-pill);
  padding:5px 12px;
  margin-bottom:10px;
}
.section-title{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  line-height:1.3;
}
.section-desc{
  max-width:520px;
  font-size:15px;
  line-height:1.7;
  color:var(--ink-2);
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-position .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn:active{transform:scale(.98)}
.btn-primary{
  background:var(--accent);
  color:#fff;
  box-shadow:0 12px 28px -14px rgba(255,107,61,.85);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 18px 34px -14px rgba(255,107,61,.9);
}
.btn-grad{
  background-image:var(--grad-brand);
  background-size:180% 100%;
  background-position:0% 50%;
  color:#fff;
  box-shadow:var(--sh-2);
}
.btn-grad:hover{
  transform:translateY(-2px);
  background-position:8% 50%;
  box-shadow:var(--sh-3);
}
.btn-ghost{
  background:#fff;
  border:1.5px solid var(--brand-1);
  color:var(--brand-1);
}
.btn-ghost:hover{
  transform:translateY(-2px);
  background:var(--soft);
}
.btn-ghost-light{
  background:transparent;
  border:1.5px solid rgba(255,255,255,.55);
  color:#fff;
}
.btn-ghost-light:hover{
  transform:translateY(-2px);
  background:rgba(255,255,255,.12);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
@media (max-width:639px){
  .btn{height:44px;padding:0 20px}
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-family:var(--mono);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.01em;
  line-height:1;
}
.badge-cool{background-image:var(--grad-cool);color:#fff}
.badge-soft{background:var(--soft);color:var(--brand-1)}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--ink-2)}
.badge-corner{
  position:absolute;
  top:12px;
  right:12px;
  height:28px;
  background-image:var(--grad-brand);
  color:#fff;
  box-shadow:0 0 0 4px rgba(255,255,255,.92);
  z-index:3;
}
/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .26s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(23,19,31,.5)}
.header-inner{
  display:flex;
  align-items:center;
  gap:16px;
  min-height:72px;
  transition:min-height .26s var(--ease);
}
.site-header.is-scrolled .header-inner{min-height:60px}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:30px;
  height:30px;
  border-radius:9px;
  background-image:var(--grad-brand);
  box-shadow:var(--sh-2);
  flex-shrink:0;
}
.brand-name{
  font-size:16px;
  font-weight:800;
  letter-spacing:-.2px;
  color:var(--ink);
  white-space:nowrap;
}
.main-nav{
  display:none;
  align-items:center;
  gap:2px;
  margin-left:auto;
}
@media (min-width:768px){
  .main-nav{display:flex}
}
.nav-link{
  padding:9px 14px;
  border-radius:var(--r-pill);
  font-size:15px;
  color:var(--ink-2);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--brand-1);background:var(--soft)}
.nav-link.is-active{
  color:var(--brand-1);
  background:var(--soft);
  font-weight:700;
}
.header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}
@media (min-width:768px){
  .header-actions{margin-left:0}
}
.search-box{
  display:none;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 16px;
  border-radius:var(--r-pill);
  background:#F4F1FC;
  border:1px solid var(--line);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
@media (min-width:1024px){
  .search-box{display:flex}
}
.search-box:focus-within{
  border-color:var(--brand-1);
  box-shadow:0 0 0 4px rgba(106,61,245,.12);
}
.search-box svg{color:var(--ink-3);flex-shrink:0}
.search-box input{
  width:150px;
  border:0;
  background:transparent;
  font-size:14px;
  color:var(--ink);
}
.search-box input:focus{outline:none}
.search-box input::placeholder{color:var(--ink-3)}
.menu-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
}
.menu-toggle:hover{background:var(--soft);color:var(--brand-1)}
@media (min-width:768px){
  .menu-toggle{display:none}
}
.header-cta{display:none}
@media (min-width:1024px){
  .header-cta{display:inline-flex}
}
.nav-drawer{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s var(--ease);
  border-top:0 solid var(--line);
}
.nav-drawer.is-open{
  max-height:460px;
  border-top:1px solid var(--line);
}
.nav-drawer ul{
  padding:10px 16px 18px;
  display:flex;
  flex-direction:column;
  gap:2px;
}
.nav-drawer a{
  display:block;
  padding:12px 14px;
  border-radius:var(--r-m);
  font-size:15px;
  color:var(--ink-2);
}
.nav-drawer a:hover,.nav-drawer a.is-active{
  background:var(--soft);
  color:var(--brand-1);
  font-weight:700;
}
@media (min-width:768px){
  .nav-drawer{display:none}
}
/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  overflow:hidden;
  padding:36px 0 40px;
}
@media (min-width:1024px){
  .page-hero{padding:52px 0 56px}
}
.page-hero::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:6px;
  background-image:var(--grad-brand);
}
.page-hero::after{
  content:"";
  position:absolute;
  right:-120px;
  top:-140px;
  width:420px;
  height:420px;
  border-radius:50%;
  background:radial-gradient(circle at center,rgba(106,61,245,.16),rgba(178,59,255,.06) 55%,transparent 72%);
  pointer-events:none;
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--ink-3);
  margin-bottom:16px;
}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand-1)}
.breadcrumb .sep{color:#C3BDD6}
.breadcrumb .current{color:var(--ink-3)}
.hero-layout{
  display:grid;
  gap:28px;
  align-items:center;
  position:relative;
  z-index:2;
}
@media (min-width:1024px){
  .hero-layout{grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);gap:48px}
}
.page-title{
  font-size:clamp(26px,3.6vw,38px);
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.5px;
  margin-bottom:14px;
}
.page-subtitle{
  font-size:16px;
  color:var(--ink-2);
  max-width:620px;
  margin-bottom:22px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.hero-search{
  display:flex;
  align-items:center;
  gap:8px;
  height:48px;
  padding:0 18px;
  border-radius:var(--r-pill);
  background:#F4F1FC;
  border:1px solid var(--line);
  margin-top:20px;
  max-width:420px;
}
.hero-search:focus-within{
  border-color:var(--brand-1);
  box-shadow:0 0 0 4px rgba(106,61,245,.12);
}
.hero-search svg{color:var(--ink-3);flex-shrink:0}
.hero-search input{
  flex:1;
  min-width:0;
  border:0;
  background:transparent;
  font-size:14.5px;
  color:var(--ink);
}
.hero-search input:focus{outline:none}
@media (min-width:768px){
  .hero-search{display:none}
}
.hero-panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-xl);
  padding:22px;
  box-shadow:var(--sh-1);
  display:flex;
  flex-direction:column;
  gap:16px;
}
.hero-panel-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.hero-panel-title{
  font-size:15px;
  font-weight:700;
  color:var(--ink-2);
}
.hero-panel-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px;
}
.hero-metric{
  background:#F8F6FE;
  border:1px solid var(--line);
  border-radius:var(--r-m);
  padding:14px 16px;
}
.hero-metric .num{
  font-family:var(--mono);
  font-size:22px;
  font-weight:700;
  color:var(--brand-1);
  line-height:1.2;
}
.hero-metric .lab{
  font-size:13px;
  color:var(--ink-3);
  margin-top:4px;
}
.hero-panel-note{
  font-size:13.5px;
  color:var(--ink-3);
  border-top:1px dashed var(--line);
  padding-top:14px;
}
/* ---------- 总览条 ---------- */
.overview{
  background:var(--surface);
  border-bottom:1px solid var(--line);
  padding:28px 0;
}
.stat-row{margin-bottom:0}
.stat-item{
  display:flex;
  flex-direction:column;
  gap:2px;
  padding:16px 18px;
  border:1px solid var(--line);
  border-radius:var(--r-m);
  background:#FBFAFE;
  height:100%;
}
.stat-item .num{
  font-family:var(--mono);
  font-size:26px;
  font-weight:700;
  line-height:1.15;
  background-image:var(--grad-cool);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.stat-item .lab{
  font-size:13.5px;
  color:var(--ink-2);
}
.chip-row{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding:18px 0 4px;
  scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.chip-row::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;
  scroll-snap-align:start;
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:38px;
  padding:0 18px;
  border-radius:var(--r-pill);
  background:#fff;
  border:1px solid var(--line);
  font-size:14px;
  color:var(--ink-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease);
}
.chip:hover{
  transform:translateY(-2px);
  border-color:var(--brand-1);
  color:var(--brand-1);
}
.chip.is-active{
  background-image:var(--grad-brand);
  border-color:transparent;
  color:#fff;
  font-weight:700;
}
/* ---------- 新作竖屏卡栅格 ---------- */
.til-cell{margin-bottom:20px}
@media (min-width:1024px){
  .til-cell{margin-bottom:24px}
}
.spot-card{
  position:relative;
  border-radius:var(--r-l);
  overflow:hidden;
  background:var(--night);
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
  height:100%;
}
.spot-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-3);
}
.spot-link{display:block;height:100%}
.spot-media{
  position:relative;
  overflow:hidden;
  aspect-ratio:3/4;
  background:#241E3B;
}
.spot-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.spot-card:hover .spot-media img{transform:scale(1.04)}
.spot-media::after{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:72%;
  background:linear-gradient(180deg,rgba(20,16,36,0) 0%,rgba(20,16,36,.72) 55%,rgba(20,16,36,.94) 100%);
  pointer-events:none;
}
.spot-time{
  position:absolute;
  left:12px;
  bottom:12px;
  z-index:3;
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-pill);
  background:rgba(20,16,36,.66);
  border:1px solid rgba(255,255,255,.22);
  color:#fff;
  font-family:var(--mono);
  font-size:12px;
  font-weight:700;
}
.spot-body{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  z-index:2;
  padding:16px 16px 18px;
  color:#fff;
}
.spot-tag{
  display:inline-flex;
  align-items:center;
  height:22px;
  padding:0 10px;
  border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.28);
  font-size:12px;
  font-weight:600;
  margin-bottom:8px;
}
.spot-title{
  font-size:16px;
  font-weight:700;
  line-height:1.45;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  transition:color .22s var(--ease);
}
.spot-card:hover .spot-title{color:#E7DEFF}
.spot-meta{
  margin-top:8px;
  font-size:12.5px;
  color:rgba(255,255,255,.66);
  font-family:var(--mono);
}
.load-more{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;
  margin-top:16px;
}
.load-more-note{
  font-size:13.5px;
  color:var(--ink-3);
}
/* ---------- 上新节拍 ---------- */
.rhythm{
  background:var(--surface);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.steps{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
  margin-top:8px;
}
@media (min-width:768px){
  .steps{grid-template-columns:repeat(4,minmax(0,1fr));gap:0}
}
.step{
  position:relative;
  padding:20px 20px 20px 0;
  border-left:0;
}
@media (min-width:768px){
  .step{
    padding:0 24px 0 0;
  }
  .step:not(:last-child)::after{
    content:"";
    position:absolute;
    right:0;
    top:16px;
    bottom:auto;
    width:1px;
    height:1px;
    background:transparent;
  }
  .step:not(:last-child)::before{
    content:"";
    position:absolute;
    right:0;
    top:19px;
    width:calc(100% - 52px);
    height:2px;
    background:var(--line);
    left:52px;
  }
}
.step-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:12px;
  font-family:var(--mono);
  font-size:15px;
  font-weight:700;
  color:var(--brand-1);
  background:var(--soft);
  margin-bottom:14px;
}
.step.is-current .step-num{
  background-image:var(--grad-brand);
  color:#fff;
  box-shadow:var(--sh-2);
}
.step h3{
  font-size:17px;
  font-weight:700;
  margin-bottom:8px;
}
.step p{
  font-size:14.5px;
  line-height:1.7;
  color:var(--ink-2);
  max-width:280px;
}
/* ---------- FAQ ---------- */
.faq-list{
  display:flex;
  flex-direction:column;
  gap:12px;
  max-width:880px;
}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-m);
  box-shadow:var(--sh-1);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item:hover{border-color:#D9D0F7}
.faq-item[open]{
  border-color:var(--brand-1);
  box-shadow:var(--sh-2);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 20px;
  list-style:none;
  cursor:pointer;
  font-size:16px;
  font-weight:700;
  color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::marker{content:""}
.faq-icon{
  flex-shrink:0;
  width:26px;
  height:26px;
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--soft);
  color:var(--brand-1);
  transition:transform .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease);
}
.faq-item[open] .faq-icon{
  transform:rotate(180deg);
  background-image:var(--grad-brand);
  color:#fff;
}
.faq-answer{
  padding:0 20px 20px;
  font-size:14.5px;
  line-height:1.8;
  color:var(--ink-2);
  animation:faqFade .2s var(--ease);
}
@keyframes faqFade{
  from{opacity:0;transform:translateY(-4px)}
  to{opacity:1;transform:translateY(0)}
}
/* ---------- CTA ---------- */
.cta-card{
  position:relative;
  border-radius:var(--r-xl);
  overflow:hidden;
  background-color:var(--night);
  background-image:linear-gradient(115deg,rgba(20,16,36,.94) 0%,rgba(20,16,36,.86) 48%,rgba(106,61,245,.72) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  padding:36px 24px;
  color:#fff;
}
@media (min-width:768px){
  .cta-card{padding:48px 44px}
}
.cta-inner{
  display:grid;
  gap:24px;
  align-items:center;
}
@media (min-width:1024px){
  .cta-inner{grid-template-columns:minmax(0,1.6fr) auto;gap:48px}
}
.cta-card h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:800;
  line-height:1.3;
  margin-bottom:12px;
}
.cta-card p{
  font-size:15px;
  line-height:1.75;
  color:rgba(255,255,255,.78);
  max-width:560px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:24px;
}
.cta-badge-wrap{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:10px;
}
@media (min-width:1024px){
  .cta-badge-wrap{align-items:flex-end}
}
.cta-badge{
  display:inline-flex;
  flex-direction:column;
  gap:4px;
  padding:18px 24px;
  border-radius:var(--r-l);
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.24);
  backdrop-filter:blur(6px);
}
.cta-badge .num{
  font-family:var(--mono);
  font-size:34px;
  font-weight:700;
  line-height:1.1;
}
.cta-badge .lab{
  font-size:13px;
  color:rgba(255,255,255,.72);
}
@media (max-width:639px){
  .cta-actions .btn{width:100%}
}
/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--night);
  color:#C9C4DA;
  padding:56px 0 28px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background-image:var(--grad-brand);
}
.footer-top{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
}
@media (min-width:640px){
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1024px){
  .footer-top{grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
}
.footer-brand .brand{margin-bottom:16px}
.footer-brand .brand-name{color:#fff}
.footer-brand p{
  font-size:14.5px;
  line-height:1.8;
  color:#A9A3C0;
  max-width:420px;
}
.footer-title{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{
  font-size:14.5px;
  color:#B8B2CC;
  transition:color .2s var(--ease);
}
.footer-links a:hover{color:#fff}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  align-items:center;
  margin-top:40px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.1);
  font-size:13px;
  color:#8B85A0;
}
/* ---------- 移动端底部 Tab ---------- */
.tabbar{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:90;
  display:flex;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar a{
  position:relative;
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  padding:8px 2px 7px;
  font-size:11px;
  color:var(--ink-3);
  transition:color .2s var(--ease);
}
.tabbar a svg{width:22px;height:22px}
.tabbar a.is-active{color:var(--brand-1);font-weight:700}
.tabbar a.is-active::before{
  content:"";
  position:absolute;
  top:0;
  left:50%;
  transform:translateX(-50%);
  width:28px;
  height:2px;
  border-radius:0 0 3px 3px;
  background-image:var(--grad-brand);
}
@media (min-width:1024px){
  .tabbar{display:none}
}
@media (max-width:1023px){
  body{padding-bottom:72px}
}

/* roulang page: category2 */
:root{
  --brand-1:#6A3DF5;
  --brand-2:#B23BFF;
  --brand-3:#12D6C0;
  --accent:#FF6B3D;
  --bg:#F7F5FC;
  --surface:#FFFFFF;
  --night:#141024;
  --text:#17131F;
  --text-2:#4B4560;
  --text-3:#8B85A0;
  --line:#E9E5F5;
  --tint:#F4F0FF;
  --grad-brand:linear-gradient(120deg,#6A3DF5 0%,#B23BFF 55%,#FF6B3D 105%);
  --grad-cool:linear-gradient(135deg,#6A3DF5,#12D6C0);
  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,19,31,.04),0 8px 24px -16px rgba(23,19,31,.18);
  --sh-2:0 18px 40px -18px rgba(106,61,245,.35);
  --sh-3:0 24px 56px -20px rgba(106,61,245,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,"SF Mono",Menlo,Consolas,"Courier New",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;line-height:1.25;color:var(--text)}
p{margin:0}
img{display:block;max-width:100%;height:auto}
a{color:var(--brand-1);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brand-2)}
ul,ol{list-style:none;margin:0;padding:0}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
input{font:inherit}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;border-radius:6px}
.row,ul.row{margin-left:0;margin-right:0}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-inline:16px;
}
@media (min-width:640px){.container{padding-inline:24px}}
@media (min-width:1024px){.container{padding-inline:32px}}
@media (min-width:1280px){.container{max-width:1200px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.93);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease),padding .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:72px;
  transition:min-height .24s var(--ease);
}
.site-header.is-scrolled .header-inner{min-height:62px}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--text);
}
.brand:hover{color:var(--text)}
.brand-mark{
  position:relative;
  width:34px;
  height:34px;
  border-radius:11px;
  background:var(--grad-brand);
  box-shadow:var(--sh-2);
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";
  position:absolute;
  inset:9px 8px;
  background:#fff;
  opacity:.94;
  clip-path:polygon(0 0,100% 50%,0 100%,30% 50%);
}
.brand-name{
  font-size:17px;
  font-weight:700;
  letter-spacing:-.2px;
  white-space:nowrap;
}
.main-nav{
  display:none;
  align-items:center;
  gap:2px;
  margin-left:6px;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 13px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
}
.nav-link:hover{color:var(--brand-1);background:var(--tint)}
.nav-link.is-active{color:var(--brand-1);font-weight:700;background:var(--tint)}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:2px;
  transform:translateX(-50%);
  width:18px;
  height:2px;
  border-radius:2px;
  background:var(--grad-brand);
}
.header-tools{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}
.search-box{
  display:none;
  align-items:center;
  gap:8px;
  height:40px;
  padding:0 14px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.search-box:focus-within{border-color:var(--brand-1);box-shadow:0 0 0 4px rgba(106,61,245,.12)}
.search-box svg{color:var(--text-3);flex:0 0 auto}
.search-box input{
  width:150px;
  border:0;
  background:transparent;
  outline:none;
  font-size:14px;
  color:var(--text);
}
.search-box input::placeholder{color:var(--text-3)}
.menu-toggle{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--text);
}
.menu-toggle:hover{border-color:var(--brand-1);color:var(--brand-1)}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--surface);
  padding:12px 0 18px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer .nav-link{display:block;padding:12px 14px;border-radius:var(--r-s);font-size:16px}

@media (min-width:768px){
  .main-nav{display:flex}
  .menu-toggle{display:none}
  .mobile-drawer{display:none !important}
}
@media (min-width:1024px){
  .search-box{display:flex}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  letter-spacing:.2px;
  border:1.5px solid transparent;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-position .3s var(--ease),background-color .22s var(--ease),color .22s var(--ease);
}
.btn-primary{
  color:#fff;
  background:var(--grad-brand);
  background-size:180% 100%;
  background-position:0 0;
  box-shadow:var(--sh-2);
}
.btn-primary:hover{
  color:#fff;
  transform:translateY(-2px);
  box-shadow:var(--sh-3);
  background-position:22% 0;
}
.btn-outline{
  color:var(--brand-1);
  background:var(--surface);
  border-color:rgba(106,61,245,.5);
}
.btn-outline:hover{
  color:var(--brand-2);
  border-color:var(--brand-2);
  transform:translateY(-2px);
  box-shadow:var(--sh-1);
}
.btn-ghost{
  color:#fff;
  background:transparent;
  border-color:rgba(255,255,255,.45);
}
.btn-ghost:hover{color:#fff;background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn:active{transform:scale(.98)}

/* ---------- badges & chips ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:26px;
  padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12.5px;
  font-weight:700;
  font-family:var(--font-mono);
  letter-spacing:.2px;
  background:var(--tint);
  color:var(--brand-1);
  white-space:nowrap;
}
.badge-cool{
  background:var(--grad-cool);
  color:#fff;
  box-shadow:0 8px 18px -10px rgba(106,61,245,.6);
}
.badge-brand{
  background:var(--grad-brand);
  color:#fff;
  box-shadow:0 8px 18px -10px rgba(178,59,255,.6);
}
.badge-corner{
  border:4px solid #fff;
  height:32px;
  font-size:13px;
}
.chip-row{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding:4px 0 10px;
  scrollbar-width:none;
}
.chip-row::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:var(--surface);
  color:var(--text-2);
  font-size:14px;
  font-weight:500;
}
.chip:hover{border-color:var(--brand-1);color:var(--brand-1);box-shadow:var(--sh-1)}
.chip.is-on{background:var(--tint);border-color:rgba(106,61,245,.45);color:var(--brand-1);font-weight:700}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.page-hero::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:100%;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center right;
  opacity:.10;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.hero-inner{
  display:grid;
  gap:26px;
  padding-block:36px 40px;
  min-height:260px;
  align-content:center;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:16px;
}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--brand-1)}
.breadcrumb .current{color:var(--text-3)}
.hero-copy{
  border-left:4px solid transparent;
  border-image:var(--grad-brand) 1;
  padding-left:18px;
}
.eyebrow{
  display:inline-block;
  margin-bottom:12px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.6px;
  color:var(--brand-1);
}
.page-hero h1{
  font-size:clamp(26px,4vw,40px);
  font-weight:800;
  letter-spacing:-.5px;
  margin-bottom:14px;
}
.hero-lead{
  max-width:640px;
  font-size:16px;
  line-height:1.8;
  color:var(--text-2);
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:24px;
}
.hero-side{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  padding:20px;
  box-shadow:var(--sh-1);
}
.hero-side h2{
  font-size:15px;
  font-weight:700;
  margin-bottom:14px;
}
.hero-side ul{display:grid;gap:10px}
.hero-side li{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:14px;
  color:var(--text-2);
  padding-bottom:10px;
  border-bottom:1px dashed var(--line);
}
.hero-side li:last-child{border-bottom:0;padding-bottom:0}
.hero-side .num{
  font-family:var(--font-mono);
  font-weight:700;
  color:var(--brand-1);
}
@media (min-width:1024px){
  .hero-inner{
    grid-template-columns:minmax(0,7fr) minmax(0,5fr);
    align-items:center;
    gap:48px;
    padding-block:52px 56px;
  }
}

/* ---------- sections ---------- */
.section{padding-block:48px}
.section-tint{background:var(--surface)}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:14px;
  margin-bottom:26px;
}
.section-head h2{
  font-size:clamp(21px,2.6vw,29px);
  font-weight:700;
  letter-spacing:-.3px;
}
.section-head p{
  margin-top:8px;
  font-size:14.5px;
  color:var(--text-3);
  max-width:640px;
}
.section-more{
  font-size:14px;
  font-weight:600;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.section-more::after{content:"→";transition:transform .22s var(--ease)}
.section-more:hover::after{transform:translateX(4px)}
@media (min-width:1024px){.section{padding-block:80px}}

/* ---------- rank list ---------- */
.rank-wrap{display:grid;gap:16px}
.podium{
  display:grid;
  gap:14px;
}
.podium-card{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-l);
  padding:22px;
  color:#fff;
  background:var(--night);
  box-shadow:var(--sh-2);
}
.podium-card::before{
  content:"";
  position:absolute;
  inset:0;
  background:var(--grad-brand);
  opacity:.92;
}
.podium-card::after{
  content:"";
  position:absolute;
  right:-60px;
  top:-60px;
  width:200px;
  height:200px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.35),transparent 65%);
}
.podium-card .inner{position:relative;z-index:2}
.podium-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:14px;
}
.podium-no{
  font-family:var(--font-mono);
  font-size:46px;
  font-weight:800;
  line-height:1;
  opacity:.92;
}
.podium-card h3{
  font-size:18px;
  font-weight:700;
  color:#fff;
  margin-bottom:8px;
}
.podium-card h3 a{color:#fff}
.podium-card h3 a:hover{color:#fff;text-decoration:underline}
.podium-card p{
  font-size:14px;
  line-height:1.7;
  color:rgba(255,255,255,.86);
}
.podium-foot{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  margin-top:16px;
}
.podium-foot .badge{background:rgba(255,255,255,.18);color:#fff;height:26px}
.podium-card .trend-track{background:rgba(255,255,255,.25);margin-top:14px}
.podium-card .trend-fill{background:#fff}
@media (min-width:768px){.podium{grid-template-columns:repeat(3,1fr)}}

.rank-list{
  display:grid;
  gap:12px;
}
.rank-row{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:16px;
  align-items:start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  padding:18px 20px;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rank-row:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-2);
  border-color:rgba(106,61,245,.35);
}
.rank-no{
  font-family:var(--font-mono);
  font-size:26px;
  font-weight:800;
  color:var(--text-3);
  line-height:1.2;
  min-width:48px;
}
.rank-row:hover .rank-no{color:var(--brand-1)}
.rank-title{
  display:inline-block;
  font-size:16.5px;
  font-weight:700;
  color:var(--text);
  margin-bottom:6px;
}
.rank-title:hover{color:var(--brand-1)}
.rank-desc{
  font-size:14px;
  color:var(--text-2);
  line-height:1.7;
  margin-bottom:12px;
}
.rank-meta{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  margin-top:10px;
}
.rank-link{
  font-size:13px;
  font-weight:600;
}
.trend-track{
  position:relative;
  height:6px;
  border-radius:var(--r-pill);
  background:var(--tint);
  overflow:hidden;
}
.trend-fill{
  display:block;
  height:100%;
  border-radius:var(--r-pill);
  background:var(--grad-cool);
}
@media (min-width:768px){
  .rank-list{grid-template-columns:repeat(2,1fr);gap:14px}
}

/* ---------- stats strip ---------- */
.stat-strip{
  display:grid;
  gap:0;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  overflow:hidden;
  box-shadow:var(--sh-1);
}
.stat-item{
  padding:24px 22px;
  border-bottom:1px solid var(--line);
}
.stat-item:last-child{border-bottom:0}
.stat-num{
  display:block;
  font-family:var(--font-mono);
  font-size:32px;
  font-weight:800;
  line-height:1.1;
  background:var(--grad-brand);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.stat-label{
  display:block;
  font-size:15px;
  font-weight:700;
  margin:6px 0 6px;
}
.stat-item p{font-size:14px;color:var(--text-3);line-height:1.7}
@media (min-width:768px){
  .stat-strip{grid-template-columns:repeat(3,1fr)}
  .stat-item{border-bottom:0;border-right:1px solid var(--line)}
  .stat-item:last-child{border-right:0}
}

/* ---------- cards ---------- */
.card-grid{display:grid;gap:20px}
.card{
  display:flex;
  flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-l);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.card-media{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--tint);
}
.card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .3s var(--ease);
}
.card:hover .card-media img{transform:scale(1.04)}
.card-media .badge{
  position:absolute;
  left:14px;
  top:14px;
}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:16.5px;font-weight:600;line-height:1.5}
.card-body h3 a{color:var(--text)}
.card-body h3 a:hover{color:var(--brand-1)}
.card-body p{font-size:14px;color:var(--text-2);line-height:1.7}
.card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:6px;
  font-size:12.5px;
  color:var(--text-3);
}
@media (min-width:640px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.card-grid{grid-template-columns:repeat(3,1fr)}}

/* ---------- steps ---------- */
.steps{
  display:grid;
  gap:22px;
  counter-reset:step;
}
.step{
  position:relative;
  padding-top:26px;
}
.step::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:2px;
  background:var(--line);
}
.step.is-current::before{background:var(--grad-brand)}
.step-no{
  font-family:var(--font-mono);
  font-size:22px;
  font-weight:800;
  color:var(--brand-1);
  display:block;
  margin-bottom:8px;
}
.step h3{font-size:16px;font-weight:600;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2);line-height:1.7}
@media (min-width:768px){
  .steps{grid-template-columns:repeat(4,1fr);gap:24px}
}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-m);
  padding:0 20px;
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.faq-item:hover{border-color:rgba(106,61,245,.32);box-shadow:var(--sh-1)}
.faq-item summary{
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 0;
  font-size:16px;
  font-weight:600;
  cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";
  font-size:22px;
  font-weight:400;
  color:var(--brand-1);
  line-height:1;
  transition:transform .22s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{
  padding:0 0 20px;
  font-size:14.5px;
  color:var(--text-2);
  line-height:1.8;
  border-top:1px dashed var(--line);
  padding-top:16px;
}

/* ---------- cta ---------- */
.cta-card{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-xl);
  background:var(--night);
  padding:34px 26px;
  color:#fff;
}
.cta-card::before{
  content:"";
  position:absolute;
  inset:0;
  background:var(--grad-brand);
  opacity:.94;
}
.cta-card::after{
  content:"";
  position:absolute;
  right:-80px;
  bottom:-120px;
  width:300px;
  height:300px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.35),transparent 62%);
}
.cta-inner{
  position:relative;
  z-index:2;
  display:grid;
  gap:22px;
  align-items:center;
}
.cta-inner h2{
  font-size:clamp(21px,2.6vw,30px);
  font-weight:800;
  color:#fff;
  margin-bottom:12px;
}
.cta-inner p{font-size:15px;line-height:1.8;color:rgba(255,255,255,.9);max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-actions .btn-primary{background:#fff;color:var(--brand-1);box-shadow:0 18px 40px -18px rgba(0,0,0,.45)}
.cta-actions .btn-primary:hover{color:var(--brand-1);background:#fff;background-position:0 0}
@media (min-width:768px){
  .cta-card{padding:48px 44px}
  .cta-inner{grid-template-columns:minmax(0,1fr) auto}
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  background:var(--night);
  color:rgba(255,255,255,.78);
  padding-top:56px;
  margin-top:8px;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:3px;
  background:var(--grad-brand);
}
.footer-top{
  display:grid;
  gap:30px;
  padding-bottom:34px;
}
.footer-brand .brand{color:#fff;margin-bottom:14px}
.footer-brand .brand-name{color:#fff}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.66);max-width:360px}
.footer-title{
  font-size:15px;
  font-weight:700;
  color:#fff;
  margin-bottom:14px;
}
.footer-links{display:grid;gap:10px}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.68);
}
.footer-links a:hover{color:#fff}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  padding:20px 0 28px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;
  color:rgba(255,255,255,.55);
}
@media (min-width:640px){
  .footer-top{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:1024px){
  .footer-top{grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
  .site-footer{padding-top:72px}
}

/* ---------- mobile tab ---------- */
.mobile-tab{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:90;
  display:grid;
  grid-template-columns:repeat(5,1fr);
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom,0);
  height:calc(58px + env(safe-area-inset-bottom,0px));
}
.tab-item{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:11px;
  color:var(--text-3);
}
.tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.75}
.tab-item.is-active{color:var(--brand-1);font-weight:700}
.tab-item.is-active::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  transform:translateX(-50%);
  width:26px;height:2px;
  border-radius:2px;
  background:var(--grad-brand);
}
body{padding-bottom:calc(58px + env(safe-area-inset-bottom,0px))}
@media (min-width:1024px){
  .mobile-tab{display:none}
  body{padding-bottom:0}
}

/* ---------- misc ---------- */
.note-line{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:var(--text-3);
  margin-top:14px;
}
.note-line::before{
  content:"";
  width:22px;height:2px;
  border-radius:2px;
  background:var(--grad-cool);
}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

/* roulang page: category3 */
:root{
  --brand-1:#6A3DF5;
  --brand-2:#B23BFF;
  --brand-3:#12D6C0;
  --accent:#FF6B3D;
  --bg:#F7F5FC;
  --surface:#FFFFFF;
  --night:#141024;
  --text:#17131F;
  --text-2:#4B4560;
  --text-3:#8B85A0;
  --line:#E9E5F5;
  --line-soft:#F1EDFB;
  --grad-brand:linear-gradient(120deg,#6A3DF5 0%,#B23BFF 55%,#FF6B3D 105%);
  --grad-cool:linear-gradient(135deg,#6A3DF5,#12D6C0);
  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,19,31,.04),0 8px 24px -16px rgba(23,19,31,.18);
  --sh-2:0 18px 40px -18px rgba(106,61,245,.35);
  --sh-3:0 24px 56px -20px rgba(106,61,245,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --mono:ui-monospace,"SF Mono","Consolas","Courier New",monospace;
  --cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--cn);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-1);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--brand-2);}
button{font-family:inherit;border:0;background:none;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--text);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-inline:16px;
}
@media (min-width:640px){.container{padding-inline:24px;}}
@media (min-width:1024px){.container{padding-inline:32px;}}
@media (min-width:1280px){.container{max-width:1280px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:74px;
  transition:height .24s var(--ease);
}
.site-header.is-scrolled .header-inner{height:62px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:32px;height:32px;border-radius:11px;
  background:var(--grad-brand);
  position:relative;
  box-shadow:0 8px 18px -10px rgba(106,61,245,.9);
}
.brand-mark::after{
  content:"";position:absolute;inset:9px;border-radius:5px;
  background:rgba(255,255,255,.92);
}
.brand-name{
  font-size:17px;font-weight:800;letter-spacing:-.3px;color:var(--text);
  white-space:nowrap;
}
.main-nav{display:none;}
@media (min-width:768px){
  .main-nav{
    display:flex;align-items:center;gap:4px;margin-left:6px;
  }
  .nav-link{
    padding:8px 12px;border-radius:var(--r-pill);
    font-size:15px;font-weight:600;color:var(--text-2);
    white-space:nowrap;
    transition:background .22s var(--ease),color .22s var(--ease);
  }
  .nav-link:hover{background:var(--line-soft);color:var(--brand-1);}
  .nav-link.is-active{color:var(--brand-1);background:#F1EBFF;}
}
@media (min-width:768px) and (max-width:1023px){
  .main-nav{gap:0;}
  .nav-link{padding:7px 8px;font-size:13.5px;}
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.search-box{
  display:none;align-items:center;gap:8px;
  height:40px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--bg);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
@media (min-width:1024px){.search-box{display:flex;width:220px;}}
.search-box:focus-within{border-color:var(--brand-1);background:#fff;box-shadow:0 0 0 4px rgba(106,61,245,.1);}
.search-box svg{flex:0 0 auto;color:var(--text-3);}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;font-size:14px;
}
.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:700;letter-spacing:.2px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn:active{transform:scale(.98);}
.btn-primary{
  color:#fff;
  background:var(--accent);
  box-shadow:0 14px 28px -16px rgba(255,107,61,.9);
}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 20px 34px -16px rgba(255,107,61,.95);}
.btn-grad{
  color:#fff;background:var(--grad-brand);background-size:140% 100%;
  box-shadow:var(--sh-2);
}
.btn-grad:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh-3);background-position:8% 0;}
.btn-ghost{
  color:var(--text);background:transparent;border:1.5px solid var(--line);
}
.btn-ghost:hover{color:var(--brand-1);border-color:var(--brand-1);background:#fff;}
.btn-light{
  color:var(--brand-1);background:#fff;border:1.5px solid var(--brand-1);
}
.btn-light:hover{color:#fff;background:var(--brand-1);}
.btn-sm{height:42px;padding:0 18px;font-size:14px;}
.header-actions .btn{display:none;}
@media (min-width:1024px){.header-actions .btn{display:inline-flex;}}
.nav-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:14px;
  border:1px solid var(--line);background:#fff;color:var(--text);
}
@media (min-width:768px){.nav-toggle{display:none;}}
.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:#fff;
  padding:14px 0 20px;
}
.drawer.is-open{display:block;}
@media (min-width:768px){.drawer.is-open{display:none;}}
.drawer .drawer-search{margin-bottom:12px;}
.drawer a.drawer-link{
  display:block;padding:13px 4px;font-size:16px;font-weight:600;
  color:var(--text-2);border-bottom:1px solid var(--line-soft);
}
.drawer a.drawer-link.is-active{color:var(--brand-1);}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  overflow:hidden;
  background:var(--bg);
  padding:36px 0 46px;
  isolation:isolate;
}
.page-hero::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.16;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(96deg,rgba(247,245,252,.98) 0%,rgba(247,245,252,.9) 52%,rgba(247,245,252,.58) 100%);
}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);
}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand-1);}
.crumb .sep{color:#C9C2DE;}
.crumb .current{color:var(--text-2);font-weight:600;}
.hero-flex{
  display:flex;flex-wrap:wrap;align-items:flex-end;gap:24px;
  margin-top:22px;
}
.hero-text{flex:1 1 460px;min-width:0;position:relative;padding-left:18px;}
.hero-text::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;
  border-radius:var(--r-pill);
  background:var(--grad-brand);
}
.page-hero h1{
  font-size:clamp(26px,3.8vw,40px);
  font-weight:800;letter-spacing:-.5px;line-height:1.2;
}
.hero-sub{
  margin-top:12px;
  font-size:16px;color:var(--text-2);max-width:620px;
}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.hero-aside{flex:0 0 auto;display:flex;flex-direction:column;align-items:flex-start;gap:10px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;letter-spacing:.2px;
  background:#F1EBFF;color:var(--brand-1);
  white-space:nowrap;
}
.badge .num{font-family:var(--mono);font-weight:700;}
.badge-cool{background:var(--grad-cool);color:#fff;}
.badge-brand{background:var(--grad-brand);color:#fff;}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--text-2);}
.badge-lg{height:34px;padding:0 16px;font-size:14px;}

/* ---------- section base ---------- */
.section{padding-block:48px;}
@media (min-width:640px){.section{padding-block:64px;}}
@media (min-width:1024px){.section{padding-block:88px;}}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;gap:16px;
  margin-bottom:28px;
}
.section-head .titles{flex:1 1 320px;min-width:0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:1.6px;
  color:var(--brand-1);text-transform:uppercase;
  margin-bottom:10px;
}
.eyebrow::before{
  content:"";width:22px;height:3px;border-radius:var(--r-pill);background:var(--grad-brand);
}
h2.section-title{
  font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:-.4px;line-height:1.25;
}
.section-desc{margin-top:10px;font-size:15px;color:var(--text-2);max-width:640px;}

/* ---------- guide layout ---------- */
.layout-grid{display:grid;grid-template-columns:1fr;gap:28px;}
@media (min-width:1024px){
  .layout-grid{grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:32px;align-items:start;}
}
.chip-row{
  display:flex;gap:10px;overflow-x:auto;
  padding-bottom:6px;margin-bottom:20px;
  scrollbar-width:thin;
  -webkit-overflow-scrolling:touch;
}
.chip{
  flex:0 0 auto;
  display:inline-flex;align-items:center;gap:6px;
  height:38px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;
  font-size:14px;font-weight:600;color:var(--text-2);
  transition:all .22s var(--ease);
}
.chip:hover{border-color:var(--brand-1);color:var(--brand-1);transform:translateY(-1px);}
.chip.is-active{background:var(--brand-1);border-color:var(--brand-1);color:#fff;box-shadow:0 12px 22px -14px rgba(106,61,245,.9);}
.chip .dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.6;}

.guide-list{display:flex;flex-direction:column;gap:16px;}
.guide-item{
  display:grid;grid-template-columns:1fr;gap:16px;
  padding:18px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-l);
  box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.guide-item:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:#DCD2FA;}
@media (min-width:640px){
  .guide-item{grid-template-columns:196px minmax(0,1fr);gap:20px;padding:20px;}
}
.guide-thumb{
  position:relative;border-radius:var(--r-m);overflow:hidden;
  aspect-ratio:16/10;background:var(--line-soft);
}
@media (min-width:640px){.guide-thumb{aspect-ratio:5/4;}}
.guide-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.guide-item:hover .guide-thumb img{transform:scale(1.04);}
.guide-thumb .corner{
  position:absolute;left:10px;top:10px;
  height:24px;padding:0 10px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;
  font-size:12px;font-weight:700;color:#fff;
  background:rgba(20,16,36,.72);
  backdrop-filter:blur(4px);
}
.guide-body{min-width:0;display:flex;flex-direction:column;}
.guide-body h3{
  font-size:17.5px;font-weight:700;line-height:1.4;letter-spacing:-.2px;
}
.guide-body h3 a{color:var(--text);}
.guide-item:hover .guide-body h3 a{color:var(--brand-1);}
.guide-body p{
  margin-top:8px;font-size:14.5px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.guide-meta{
  margin-top:14px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:12.5px;color:var(--text-3);
}
.guide-meta .num{font-family:var(--mono);font-weight:700;color:var(--text-2);}
.guide-meta .more{margin-left:auto;font-weight:700;color:var(--brand-1);font-size:13px;}
.guide-meta .more:hover{color:var(--brand-2);}

.list-foot{
  margin-top:24px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 20px;background:#fff;border:1px dashed #DCD2FA;border-radius:var(--r-m);
  font-size:14px;color:var(--text-2);
}

/* ---------- sidebar ---------- */
.side-col{display:flex;flex-direction:column;gap:20px;}
@media (min-width:1024px){
  .side-col{position:sticky;top:92px;}
}
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:20px;box-shadow:var(--sh-1);
}
.panel-title{
  display:flex;align-items:center;gap:8px;
  font-size:16px;font-weight:700;margin-bottom:14px;
}
.panel-title::before{
  content:"";width:4px;height:16px;border-radius:var(--r-pill);background:var(--grad-cool);
}
.rank-list{display:flex;flex-direction:column;gap:14px;}
.rank-item{display:grid;grid-template-columns:26px minmax(0,1fr);gap:12px;align-items:start;}
.rank-no{
  font-family:var(--mono);font-size:17px;font-weight:700;line-height:1.2;
  color:var(--brand-1);
}
.rank-item:nth-child(1) .rank-no{color:var(--accent);}
.rank-item:nth-child(2) .rank-no{color:var(--brand-2);}
.rank-item:nth-child(3) .rank-no{color:var(--brand-3);}
.rank-title{font-size:14.5px;font-weight:600;line-height:1.45;}
.rank-title a{color:var(--text);}
.rank-title a:hover{color:var(--brand-1);}
.trend{
  margin-top:8px;height:6px;border-radius:var(--r-pill);
  background:var(--line-soft);overflow:hidden;
}
.trend span{display:block;height:100%;border-radius:var(--r-pill);background:var(--grad-cool);}
.rank-foot{margin-top:6px;font-size:12px;color:var(--text-3);}
.rank-foot .num{font-family:var(--mono);font-weight:700;color:var(--text-2);}
.sub-card{
  background:var(--night);color:#fff;border:0;
  position:relative;overflow:hidden;
}
.sub-card::after{
  content:"";position:absolute;right:-40px;top:-40px;width:150px;height:150px;border-radius:50%;
  background:radial-gradient(circle,rgba(178,59,255,.55),transparent 70%);
}
.sub-card .panel-title{color:#fff;}
.sub-card p{font-size:14px;color:rgba(255,255,255,.72);margin-bottom:16px;position:relative;z-index:1;}
.sub-form{display:flex;flex-direction:column;gap:10px;position:relative;z-index:1;}
.sub-form label{font-size:13px;color:rgba(255,255,255,.8);margin-bottom:-4px;}
.sub-form input{
  height:48px;border-radius:12px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.08);color:#fff;padding:0 14px;outline:none;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.sub-form input::placeholder{color:rgba(255,255,255,.42);}
.sub-form input:focus{border-color:var(--brand-2);box-shadow:0 0 0 4px rgba(178,59,255,.22);}
.sub-note{font-size:12px;color:rgba(255,255,255,.5);position:relative;z-index:1;}
.quick-links{display:flex;flex-direction:column;gap:2px;}
.quick-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 4px;font-size:14.5px;font-weight:600;color:var(--text-2);
  border-bottom:1px solid var(--line-soft);
}
.quick-links a:last-child{border-bottom:0;}
.quick-links a:hover{color:var(--brand-1);}
.quick-links a span{color:var(--text-3);font-size:12px;font-family:var(--mono);}

/* ---------- steps ---------- */
.steps-band{
  background:var(--night);color:#fff;
  border-radius:var(--r-xl);
  padding:32px 22px;
  position:relative;overflow:hidden;
}
@media (min-width:1024px){.steps-band{padding:44px 40px;}}
.steps-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad-brand);opacity:.9;
}
.steps-band::after{
  content:"";position:absolute;right:-80px;bottom:-100px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(106,61,245,.6),transparent 68%);
}
.steps-band h2{font-size:clamp(21px,2.4vw,28px);font-weight:700;color:#fff;letter-spacing:-.3px;}
.steps-band .lead{margin-top:10px;font-size:15px;color:rgba(255,255,255,.72);max-width:620px;}
.steps-row{
  margin-top:30px;display:grid;grid-template-columns:1fr;gap:0;position:relative;z-index:1;
}
@media (min-width:768px){.steps-row{grid-template-columns:repeat(4,1fr);}}
.step{
  position:relative;padding:22px 18px 8px 0;
}
@media (min-width:768px){.step{padding:0 18px 0 0;}}
.step-no{
  font-family:var(--mono);font-size:26px;font-weight:700;line-height:1;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.step-line{
  margin-top:14px;height:3px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);position:relative;overflow:hidden;
}
.step.is-current .step-line span{
  position:absolute;inset:0;background:var(--grad-brand);border-radius:var(--r-pill);
}
.step h3{margin-top:14px;font-size:16px;font-weight:700;color:#fff;}
.step p{margin-top:8px;font-size:14px;line-height:1.7;color:rgba(255,255,255,.66);}
@media (max-width:767px){
  .step{border-bottom:1px solid rgba(255,255,255,.1);padding-bottom:20px;}
  .step:last-child{border-bottom:0;}
}

/* ---------- keypoints ---------- */
.kp-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){.kp-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.kp-grid{grid-template-columns:repeat(3,1fr);gap:24px;}}
.kp-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-l);
  padding:24px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:12px;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.kp-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.kp-icon{
  width:48px;height:48px;border-radius:14px;background:var(--grad-cool);
  display:flex;align-items:center;justify-content:center;color:#fff;
}
.kp-card h3{font-size:17px;font-weight:700;}
.kp-card p{font-size:14.5px;color:var(--text-2);line-height:1.7;}
.kp-list{display:flex;flex-direction:column;gap:8px;margin-top:2px;}
.kp-list li{
  position:relative;padding-left:18px;font-size:14px;color:var(--text-2);
}
.kp-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--grad-brand);
}
.kp-foot{margin-top:auto;display:flex;align-items:center;gap:10px;padding-top:6px;}

/* ---------- faq ---------- */
.faq-wrap{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);
  overflow:hidden;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.faq-item.is-open{border-color:#D8CDFA;box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;
  font-size:16px;font-weight:700;color:var(--text);
}
.faq-q:hover{color:var(--brand-1);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:#F1EBFF;color:var(--brand-1);
  transition:transform .22s var(--ease),background .22s var(--ease),color .22s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--brand-1);color:#fff;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .26s var(--ease);
}
.faq-a .inner{
  padding:0 20px 20px;font-size:14.8px;line-height:1.8;color:var(--text-2);
}

/* ---------- cta ---------- */
.cta-card{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);
  background:var(--grad-brand);
  color:#fff;
  padding:34px 22px;
  display:flex;flex-wrap:wrap;align-items:center;gap:24px;
  box-shadow:var(--sh-2);
}
@media (min-width:1024px){.cta-card{padding:48px 44px;}}
.cta-card::after{
  content:"";position:absolute;right:-60px;top:-70px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.28),transparent 66%);
}
.cta-text{flex:1 1 380px;min-width:0;position:relative;z-index:1;}
.cta-text h2{font-size:clamp(21px,2.6vw,30px);font-weight:800;letter-spacing:-.4px;line-height:1.25;}
.cta-text p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.86);max-width:560px;}
.cta-actions{
  position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px;align-items:center;
}
@media (max-width:639px){
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}
.btn-on-grad{
  background:#fff;color:var(--brand-1);box-shadow:0 18px 32px -18px rgba(20,16,36,.6);
}
.btn-on-grad:hover{color:var(--brand-1);transform:translateY(-2px);}
.btn-on-grad-ghost{
  background:rgba(255,255,255,.12);color:#fff;border:1.5px solid rgba(255,255,255,.55);
}
.btn-on-grad-ghost:hover{background:rgba(255,255,255,.2);color:#fff;}
.cta-badge{
  position:relative;z-index:1;
  display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:16px 22px;border-radius:var(--r-m);
  background:rgba(20,16,36,.28);
  border:1px solid rgba(255,255,255,.24);
  min-width:132px;
}
.cta-badge .big{font-family:var(--mono);font-size:30px;font-weight:700;line-height:1;}
.cta-badge .small{font-size:12.5px;color:rgba(255,255,255,.8);}
@media (max-width:639px){.cta-badge{width:100%;}}

/* ---------- footer ---------- */
.site-footer{
  margin-top:20px;
  background:var(--night);color:#fff;
  position:relative;
  padding-top:2px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad-brand);
}
.footer-top{
  display:grid;grid-template-columns:1fr;gap:32px;
  padding:48px 0 36px;
}
@media (min-width:640px){.footer-top{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1024px){.footer-top{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding:64px 0 48px;}}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand .brand-name{color:#fff;}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:380px;}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:14px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-links a:hover{color:#fff;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  padding:18px 0 26px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:12.5px;color:rgba(255,255,255,.5);
}

/* ---------- mobile tabbar ---------- */
.tabbar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:grid;grid-template-columns:repeat(5,1fr);
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -8px 24px -18px rgba(23,19,31,.5);
}
@media (min-width:1024px){.tabbar{display:none;}}
.tab-item{
  position:relative;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:56px;font-size:11.5px;font-weight:600;color:var(--text-3);
  transition:color .2s var(--ease);
}
.tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.75;}
.tab-item.is-active{color:var(--brand-1);}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:34px;height:2px;border-radius:var(--r-pill);background:var(--grad-brand);
}
.tab-item:hover{color:var(--brand-1);}
@media (max-width:1023px){
  body{padding-bottom:calc(56px + env(safe-area-inset-bottom));}
}

/* ---------- helpers ---------- */
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

/* roulang page: category4 */
:root{
  --brand-1:#6A3DF5;
  --brand-2:#B23BFF;
  --brand-3:#12D6C0;
  --accent:#FF6B3D;
  --bg:#F7F5FC;
  --surface:#FFFFFF;
  --night:#141024;
  --ink:#17131F;
  --ink-2:#4B4560;
  --ink-3:#8B85A0;
  --line:#E9E5F5;
  --soft:#F4F0FF;
  --grad-brand:linear-gradient(120deg,#6A3DF5 0%,#B23BFF 55%,#FF6B3D 105%);
  --grad-cool:linear-gradient(135deg,#6A3DF5,#12D6C0);
  --r-s:10px; --r-m:16px; --r-l:24px; --r-xl:32px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,19,31,.04),0 8px 24px -16px rgba(23,19,31,.18);
  --sh-2:0 18px 40px -18px rgba(106,61,245,.35);
  --sh-3:0 24px 56px -20px rgba(106,61,245,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --mono:ui-monospace,"SF Mono",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-1);text-decoration:none;transition:color .22s var(--ease)}
a:hover,a:focus{color:var(--brand-2)}
h1,h2,h3,h4{margin:0 0 .6em;color:var(--ink);letter-spacing:-.3px}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:16px;padding-right:16px}
@media(min-width:640px){.container{padding-left:24px;padding-right:24px}}
@media(min-width:1024px){.container{padding-left:32px;padding-right:32px;max-width:1200px}}
@media(min-width:1280px){.container{max-width:1280px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease),padding .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(23,19,31,.5)}
.header-inner{
  display:flex;align-items:center;gap:20px;
  min-height:72px;padding-top:10px;padding-bottom:10px;
  transition:min-height .24s var(--ease);
}
.site-header.is-scrolled .header-inner{min-height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink);flex:0 0 auto}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:30px;height:30px;border-radius:9px;background:var(--grad-brand);
  box-shadow:0 10px 22px -12px rgba(106,61,245,.85);position:relative;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;inset:9px 10px;border-radius:3px;
  background:#fff;opacity:.9;clip-path:polygon(0 0,100% 50%,0 100%);
}
.brand-name{font-weight:800;font-size:17px;letter-spacing:-.3px;white-space:nowrap}
.main-nav{display:none;gap:4px;flex:1 1 auto;justify-content:center}
.nav-link{
  display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:var(--ink-2);white-space:nowrap;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.nav-link:hover{background:var(--soft);color:var(--brand-1)}
.nav-link.is-active{background:var(--soft);color:var(--brand-1)}
.nav-link:active{transform:scale(.97)}
.header-actions{display:none;align-items:center;gap:12px;flex:0 0 auto}
.search-box{position:relative}
.search-box input{
  height:40px;width:196px;padding:0 40px 0 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;color:var(--ink);font-size:14px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),width .24s var(--ease);
}
.search-box input::placeholder{color:var(--ink-3)}
.search-box input:focus{outline:none;border-color:var(--brand-1);box-shadow:0 0 0 4px rgba(106,61,245,.14);width:230px}
.search-box .search-icon{
  position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--ink-3);
  width:18px;height:18px;pointer-events:none;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-pill);border:1.5px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;text-align:center;white-space:nowrap;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 14px 30px -16px rgba(255,107,61,.85)}
.btn-primary:hover{background:#ff5a27;color:#fff;transform:translateY(-2px);box-shadow:0 20px 38px -16px rgba(255,107,61,.95)}
.btn-grad{background:var(--grad-brand);background-size:150% 100%;color:#fff;box-shadow:var(--sh-2)}
.btn-grad:hover{color:#fff;transform:translateY(-2px);box-shadow:var(--sh-3);background-position:8% 0}
.btn-outline{background:#fff;color:var(--brand-1);border-color:rgba(106,61,245,.45)}
.btn-outline:hover{background:var(--soft);color:var(--brand-1);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.menu-toggle{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;
}
.menu-toggle:hover{border-color:var(--brand-1);color:var(--brand-1)}
.mobile-drawer{
  display:none;border-top:1px solid var(--line);background:#fff;padding:8px 0 16px;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer .drawer-link{display:block;padding:12px 4px;font-size:16px;font-weight:600;color:var(--ink-2);border-bottom:1px solid var(--line)}
.mobile-drawer .drawer-link.is-active{color:var(--brand-1)}
.mobile-drawer .drawer-form{margin-top:14px}
.mobile-drawer .drawer-form input{width:100%;height:46px;border-radius:12px;border:1px solid var(--line);padding:0 16px}
@media(min-width:768px){
  .main-nav{display:flex}
  .menu-toggle{display:none}
}
@media(min-width:1024px){
  .header-actions{display:flex}
  .main-nav{justify-content:flex-start}
}

/* ---------- page hero ---------- */
.page-hero{position:relative;overflow:hidden;background:#fff;border-bottom:1px solid var(--line)}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.16;
}
.page-hero::after{
  content:"";position:absolute;top:-120px;right:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(178,59,255,.20),rgba(106,61,245,0) 68%);
}
.page-hero .container{position:relative;z-index:2}
.hero-pad{padding:44px 0 48px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:18px}
.breadcrumb a{color:var(--ink-2)}
.breadcrumb a:hover{color:var(--brand-1)}
.breadcrumb .sep{color:#C9C3DA}
.breadcrumb .current{color:var(--ink-3)}
.hero-grid{display:flex;flex-wrap:wrap;align-items:flex-end;gap:24px;justify-content:space-between}
.hero-copy{position:relative;padding-left:18px;max-width:720px}
.hero-copy::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:var(--r-pill);
  background:var(--grad-cool);
}
.hero-copy h1{font-size:clamp(28px,4.2vw,44px);font-weight:800;line-height:1.2;margin-bottom:12px}
.hero-summary{font-size:16px;color:var(--ink-2);margin:0;max-width:620px}
.hero-side{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;font-weight:700;letter-spacing:.2px;
}
.badge-cool{background:var(--grad-cool);color:#fff;box-shadow:0 10px 22px -16px rgba(106,61,245,.9)}
.badge-soft{background:var(--soft);color:var(--brand-1)}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--ink-2)}
.badge-num{font-family:var(--mono);font-weight:700}
@media(min-width:768px){.hero-pad{padding:56px 0 60px}}
@media(min-width:1024px){.hero-pad{padding:64px 0 68px}}

/* ---------- sections ---------- */
.section{padding-block:48px}
.section-head{max-width:760px;margin-bottom:28px}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand-1);
  background:var(--soft);border-radius:var(--r-pill);height:28px;padding:0 14px;margin-bottom:14px;
}
.section-title{font-size:clamp(22px,2.6vw,30px);font-weight:700;margin-bottom:10px}
.section-sub{color:var(--ink-2);font-size:15px;margin:0}
.section-head.split{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-end;justify-content:space-between;max-width:none}
@media(min-width:640px){.section{padding-block:64px}}
@media(min-width:1024px){.section{padding-block:88px}}

/* ---------- zigzag ---------- */
.zig-list{display:flex;flex-direction:column;gap:40px}
.zig-row{display:grid;grid-template-columns:1fr;gap:20px;align-items:center}
.zig-figure{position:relative;border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-1);background:#fff}
.zig-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s var(--ease)}
.zig-row:hover .zig-figure img{transform:scale(1.04)}
.zig-figure .zig-tag{
  position:absolute;left:16px;top:16px;
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);color:var(--brand-1);font-size:12px;font-weight:700;
  box-shadow:0 8px 20px -14px rgba(23,19,31,.7);
}
.zig-text{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:24px;box-shadow:var(--sh-1)}
.zig-step{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--brand-2);letter-spacing:1px}
.zig-text h3{font-size:20px;margin:8px 0 10px}
.zig-text p{color:var(--ink-2);font-size:15px;margin-bottom:14px}
.zig-points{display:flex;flex-direction:column;gap:10px}
.zig-points li{position:relative;padding-left:22px;font-size:14px;color:var(--ink-2)}
.zig-points li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--grad-cool);
}
@media(min-width:768px){
  .zig-row{grid-template-columns:1fr 1fr;gap:32px}
  .zig-row .zig-text{order:1}
  .zig-row .zig-figure{order:2}
  .zig-row.is-flip .zig-text{order:2}
  .zig-row.is-flip .zig-figure{order:1}
  .zig-list{gap:56px}
}
@media(min-width:1024px){.zig-text{padding:32px}}

/* ---------- steps ---------- */
.steps-wrap{background:var(--night);border-radius:var(--r-xl);padding:36px 24px;position:relative;overflow:hidden}
.steps-wrap::after{
  content:"";position:absolute;right:-100px;bottom:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(106,61,245,.55),rgba(20,16,36,0) 70%);
}
.steps-wrap > *{position:relative;z-index:2}
.steps-wrap .section-title{color:#fff}
.steps-wrap .section-sub{color:rgba(255,255,255,.72)}
.steps{display:grid;grid-template-columns:1fr;gap:20px;margin-top:26px}
.step{position:relative;padding:22px 20px 22px 22px;border-radius:var(--r-l);background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14)}
.step.is-current{background:var(--grad-brand);border-color:transparent;box-shadow:var(--sh-3)}
.step-num{font-family:var(--mono);font-size:26px;font-weight:700;color:rgba(255,255,255,.6);letter-spacing:1px;line-height:1}
.step.is-current .step-num{color:#fff}
.step h3{color:#fff;font-size:17px;margin:10px 0 8px}
.step p{color:rgba(255,255,255,.72);font-size:14px;margin:0}
.step.is-current p{color:rgba(255,255,255,.9)}
@media(min-width:768px){
  .steps{grid-template-columns:repeat(4,1fr);gap:0}
  .step{border-radius:0;background:transparent;border:none;border-top:2px solid rgba(255,255,255,.18);padding:26px 18px 0 0}
  .step.is-current{border-top:2px solid transparent;border-image:var(--grad-brand) 1;background:transparent;box-shadow:none}
  .step.is-current .step-inner{
    background:var(--grad-brand);border-radius:var(--r-l);padding:18px;box-shadow:var(--sh-3);
  }
  .step-inner{padding:0;transition:background .22s var(--ease)}
  .steps-wrap{padding:48px 40px}
}

/* ---------- checklist grid ---------- */
.check-grid{display:grid;grid-template-columns:1fr;gap:16px}
.check-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:22px;box-shadow:var(--sh-1);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease)}
.check-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(106,61,245,.35)}
.check-card h3{font-size:17px;margin-bottom:8px}
.check-card p{font-size:14px;color:var(--ink-2);margin:0}
.check-card .icon-box{
  width:40px;height:40px;border-radius:12px;background:var(--grad-cool);display:flex;align-items:center;justify-content:center;
  color:#fff;margin-bottom:14px;
}
@media(min-width:640px){.check-grid{grid-template-columns:repeat(2,1fr);gap:20px}}
@media(min-width:1024px){.check-grid{grid-template-columns:repeat(3,1fr);gap:24px;padding:0}}

/* ---------- faq ---------- */
.faq-shell{display:grid;grid-template-columns:1fr;gap:24px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);box-shadow:var(--sh-1);overflow:hidden;transition:border-color .22s var(--ease),box-shadow .22s var(--ease)}
.faq-item[open]{border-color:rgba(106,61,245,.4);box-shadow:var(--sh-2)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:12px;
  padding:18px 20px;font-size:16px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-1)}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;position:relative;margin-top:3px;
  transition:transform .22s var(--ease);color:var(--brand-1);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-icon::before{left:0;right:0;top:10px;height:2px}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px;transition:transform .22s var(--ease)}
.faq-item[open] .faq-icon{transform:rotate(180deg)}
.faq-item[open] .faq-icon::after{transform:scaleY(0)}
.faq-a{padding:0 20px 20px;font-size:15px;color:var(--ink-2);line-height:1.8}
.faq-aside{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:24px;box-shadow:var(--sh-1);height:fit-content}
.faq-aside h3{font-size:18px;margin-bottom:12px}
.faq-aside ul{display:flex;flex-direction:column;gap:12px}
.faq-aside li{padding-bottom:12px;border-bottom:1px dashed var(--line);font-size:14px;color:var(--ink-2)}
.faq-aside li:last-child{border-bottom:none;padding-bottom:0}
.faq-aside a{font-weight:600}
@media(min-width:1024px){.faq-shell{grid-template-columns:8fr 4fr;gap:32px}}

/* ---------- cta ---------- */
.cta-card{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:var(--grad-brand);background-size:160% 100%;
  padding:36px 24px;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
  box-shadow:var(--sh-3);
}
.cta-card::after{
  content:"";position:absolute;left:-80px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.28),rgba(255,255,255,0) 70%);
}
.cta-copy{position:relative;z-index:2;max-width:600px}
.cta-copy h2{color:#fff;font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
.cta-copy p{color:rgba(255,255,255,.88);margin:0;font-size:15px}
.cta-actions{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.cta-badge{
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;
  min-width:104px;padding:12px 18px;border-radius:var(--r-l);
  background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.35);color:#fff;
}
.cta-badge .num{font-family:var(--mono);font-size:26px;font-weight:700;line-height:1.1}
.cta-badge .label{font-size:12px;opacity:.88;margin-top:4px}
@media(min-width:768px){.cta-card{padding:48px 44px}}
@media(max-width:639px){.cta-actions .btn{width:100%}}

/* ---------- footer ---------- */
.site-footer{
  position:relative;background:var(--night);color:rgba(255,255,255,.72);
  padding:56px 0 32px;margin-top:0;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad-brand);
}
.footer-top{display:grid;grid-template-columns:1fr;gap:32px}
.footer-brand .brand-name{color:#fff}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);margin:14px 0 0;max-width:360px}
.footer-title{color:#fff;font-size:15px;font-weight:700;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px}
.footer-links a:hover{color:#fff}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.55);
}
@media(min-width:640px){.footer-top{grid-template-columns:repeat(2,1fr);gap:32px}}
@media(min-width:1024px){.footer-top{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}}

/* ---------- mobile tabs ---------- */
.mobile-tabs{
  position:fixed;left:0;right:0;bottom:0;z-index:80;display:flex;
  background:rgba(255,255,255,.95);backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -12px 30px -22px rgba(23,19,31,.55);
}
.mobile-tabs .tab-item{
  flex:1 1 0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  height:56px;font-size:11px;color:var(--ink-3);position:relative;
}
.mobile-tabs .tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.75}
.mobile-tabs .tab-item.is-active{color:var(--brand-1)}
.mobile-tabs .tab-item.is-active::before{
  content:"";position:absolute;top:0;left:22%;right:22%;height:2px;border-radius:var(--r-pill);background:var(--grad-brand);
}
.mobile-tabs .tab-item:hover{color:var(--brand-1)}
body{padding-bottom:56px}
@media(min-width:1024px){
  .mobile-tabs{display:none}
  body{padding-bottom:0}
}

/* ---------- misc ---------- */
.note-line{font-size:13px;color:var(--ink-3);margin-top:16px}
.text-gradient{background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
::selection{background:rgba(106,61,245,.2)}

/* roulang page: category5 */
:root{
  --brand-1:#6A3DF5;
  --brand-2:#B23BFF;
  --brand-3:#12D6C0;
  --accent:#FF6B3D;
  --bg:#F7F5FC;
  --surface:#FFFFFF;
  --night:#141024;
  --text:#17131F;
  --text-2:#4B4560;
  --text-3:#8B85A0;
  --line:#E9E5F5;
  --soft:#F4F0FF;
  --grad-brand:linear-gradient(120deg,#6A3DF5 0%,#B23BFF 55%,#FF6B3D 105%);
  --grad-cool:linear-gradient(135deg,#6A3DF5,#12D6C0);
  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(23,19,31,.04),0 8px 24px -16px rgba(23,19,31,.18);
  --sh-2:0 18px 40px -18px rgba(106,61,245,.35);
  --sh-3:0 24px 56px -20px rgba(106,61,245,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --mono:ui-monospace,"SF Mono","SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-1);text-decoration:none;transition:color 220ms var(--ease);}
a:hover,a:focus{color:var(--brand-2);}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4,h5,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;}
::selection{background:rgba(106,61,245,.18);}

/* ---------- Foundation 覆盖 ---------- */
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,dl,dd,figure,form{margin:0;}
h1,h2,h3,h4,h5,h6{font-family:inherit;color:inherit;line-height:1.25;}
.button,.button:hover,.button:focus{background:none;color:inherit;margin:0;}
select,textarea,input{box-shadow:none !important;}

/* ---------- 容器与板块 ---------- */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:16px;
  padding-right:16px;
}
@media (min-width:640px){.container{padding-left:24px;padding-right:24px;}}
@media (min-width:1024px){.container{padding-left:32px;padding-right:32px;}}
@media (min-width:1280px){.container{max-width:1280px;}}

.section{padding-block:48px;}
@media (min-width:640px){.section{padding-block:64px;}}
@media (min-width:1024px){.section{padding-block:88px;}}
.section-tight{padding-block:40px;}
@media (min-width:1024px){.section-tight{padding-block:56px;}}

.section-head{margin-bottom:24px;}
@media (min-width:1024px){.section-head{margin-bottom:32px;}}
.section-head h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;
  letter-spacing:-.3px;
}
.section-head p{margin-top:10px;color:var(--text-2);font-size:15px;line-height:1.7;max-width:760px;}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--brand-1);text-transform:uppercase;margin-bottom:12px;
}
.eyebrow::before{content:"";width:20px;height:2px;border-radius:2px;background:var(--grad-brand);}

/* ---------- 按钮 ---------- */
.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;line-height:1;white-space:nowrap;
  transition:transform 220ms var(--ease),box-shadow 220ms var(--ease),background-position 220ms var(--ease),color 220ms var(--ease),border-color 220ms var(--ease);
}
.btn:active{transform:scale(.98);}
.btn-primary{
  background-image:var(--grad-brand);
  background-size:160% 100%;
  background-position:0 0;
  color:#fff;
  box-shadow:var(--sh-2);
}
.btn-primary:hover,.btn-primary:focus{
  color:#fff;
  transform:translateY(-2px);
  background-position:24% 0;
  box-shadow:var(--sh-3);
}
.btn-ghost{
  background:#fff;color:var(--brand-1);
  border:1.5px solid var(--brand-1);
}
.btn-ghost:hover,.btn-ghost:focus{
  color:var(--brand-2);border-color:var(--brand-2);
  transform:translateY(-2px);box-shadow:var(--sh-1);
}
.btn-light{
  background:rgba(255,255,255,.12);color:#fff;
  border:1.5px solid rgba(255,255,255,.45);
}
.btn-light:hover,.btn-light:focus{color:#fff;background:rgba(255,255,255,.2);transform:translateY(-2px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;line-height:1;white-space:nowrap;
  font-family:var(--mono);
}
.badge-cool{background-image:var(--grad-cool);color:#fff;}
.badge-soft{background:var(--soft);color:var(--brand-1);}
.badge-line{border:1px solid var(--line);background:#fff;color:var(--text-2);font-family:inherit;font-weight:600;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow 240ms var(--ease);
}
.site-header.is-scrolled{box-shadow:0 10px 30px -22px rgba(23,19,31,.45);}
.header-inner{
  display:flex;align-items:center;gap:18px;
  min-height:72px;
  transition:min-height 240ms var(--ease);
}
.site-header.is-scrolled .header-inner{min-height:60px;}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text);}
.brand:hover,.brand:focus{color:var(--text);}
.brand-mark{
  width:28px;height:28px;border-radius:9px;
  background-image:var(--grad-brand);
  box-shadow:0 8px 18px -10px rgba(106,61,245,.9);
  position:relative;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px;
  border-radius:3px;background:#fff;opacity:.92;
}
.brand-name{font-size:17px;font-weight:800;letter-spacing:-.2px;white-space:nowrap;}

.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  height:40px;padding:0 13px;border-radius:var(--r-pill);
  font-size:14.5px;font-weight:600;color:var(--text-2);
  transition:color 200ms var(--ease),background-color 200ms var(--ease);
}
.nav-link:hover,.nav-link:focus{color:var(--brand-1);background:var(--soft);}
.nav-link.is-active{color:var(--brand-1);background:var(--soft);}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  bottom:3px;width:18px;height:2px;border-radius:2px;background:var(--grad-brand);
}

.header-tools{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-search{
  display:flex;align-items:center;gap:6px;
  height:40px;width:200px;padding:0 6px 0 14px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:#fff;transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.nav-search:focus-within{border-color:var(--brand-1);box-shadow:0 0 0 4px rgba(106,61,245,.12);}
.nav-search input{
  flex:1;min-width:0;border:0;background:none;outline:none;
  font-size:14px;color:var(--text);
}
.nav-search input::placeholder{color:var(--text-3);}
.nav-search button{
  width:30px;height:30px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand-1);transition:background-color 200ms var(--ease);
}
.nav-search button:hover{background:var(--soft);}
.nav-search svg{width:17px;height:17px;}

.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;color:var(--text);
}
.nav-toggle svg{width:22px;height:22px;}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;z-index:90;
  background:rgba(20,16,36,.42);
  opacity:0;visibility:hidden;transition:opacity 240ms var(--ease),visibility 240ms var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:91;
  width:min(320px,86vw);
  background:#fff;padding:22px 20px 32px;
  border-left:1px solid var(--line);
  transform:translateX(102%);
  transition:transform 280ms var(--ease);
  display:flex;flex-direction:column;gap:8px;
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-close{width:38px;height:38px;border-radius:12px;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;color:var(--text-2);}
.drawer-close svg{width:20px;height:20px;}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 14px;border-radius:14px;
  font-size:15.5px;font-weight:600;color:var(--text-2);background:#fff;
  transition:background-color 200ms var(--ease),color 200ms var(--ease);
}
.drawer-link:hover,.drawer-link:focus{background:var(--soft);color:var(--brand-1);}
.drawer-link.is-active{background:var(--soft);color:var(--brand-1);}
.drawer-link svg{width:18px;height:18px;color:var(--text-3);}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;
  background-color:var(--soft);
  background-image:linear-gradient(100deg,rgba(247,245,252,.94) 0%,rgba(247,245,252,.86) 46%,rgba(244,240,255,.72) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;top:-140px;right:-80px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(178,59,255,.22),transparent 68%);
  pointer-events:none;
}
.hero-inner{
  position:relative;
  display:grid;grid-template-columns:1fr;gap:24px;align-items:center;
  padding-block:44px;
}
@media (min-width:768px){
  .hero-inner{grid-template-columns:1.55fr .95fr;gap:40px;padding-block:56px;}
}
@media (min-width:1024px){
  .hero-inner{min-height:300px;padding-block:64px;}
}
.hero-copy{border-left:4px solid transparent;border-image:var(--grad-brand) 1;padding-left:18px;}
@media (min-width:768px){.hero-copy{padding-left:22px;}}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:14px;}
.breadcrumb a{color:var(--text-2);font-weight:600;}
.breadcrumb a:hover,.breadcrumb a:focus{color:var(--brand-1);}
.breadcrumb .sep{color:var(--text-3);}
.breadcrumb .now{color:var(--text-3);}
.page-hero h1{
  font-size:clamp(26px,3.6vw,40px);
  font-weight:800;letter-spacing:-.6px;line-height:1.22;
}
.page-hero .hero-sub{margin-top:12px;color:var(--text-2);font-size:15.5px;line-height:1.7;max-width:520px;}
.hero-side{display:flex;flex-direction:column;gap:14px;align-items:flex-start;}
@media (min-width:768px){.hero-side{align-items:flex-end;text-align:right;}}
.hero-figure{
  width:100%;max-width:340px;border-radius:var(--r-l);overflow:hidden;
  border:1px solid rgba(255,255,255,.8);box-shadow:var(--sh-1);background:#fff;
  aspect-ratio:16/10;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;}
@media (min-width:768px){.badge-row{justify-content:flex-end;}}

/* ---------- 标签筛选条 ---------- */
.chip-bar{
  display:flex;gap:10px;overflow-x:auto;
  padding-bottom:6px;margin-bottom:26px;
  scroll-snap-type:x mandatory;
  -webkit-overflow-scrolling:touch;
}
.chip-bar::-webkit-scrollbar{height:5px;}
.chip-bar::-webkit-scrollbar-thumb{background:var(--line);border-radius:99px;}
.chip{
  flex:0 0 auto;scroll-snap-align:start;
  height:40px;padding:0 20px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;
  font-size:14px;font-weight:600;color:var(--text-2);
  display:inline-flex;align-items:center;gap:8px;
  transition:all 220ms var(--ease);
}
.chip:hover{border-color:var(--brand-1);color:var(--brand-1);transform:translateY(-2px);}
.chip.is-active{
  background-image:var(--grad-brand);color:#fff;border-color:transparent;
  box-shadow:var(--sh-2);
}
.chip .num{font-family:var(--mono);font-size:12.5px;opacity:.78;}

/* ---------- 问答分组卡 ---------- */
.qa-group{margin-bottom:38px;}
.qa-group:last-child{margin-bottom:0;}
.group-head{display:flex;align-items:baseline;gap:14px;margin-bottom:20px;}
.group-index{
  font-family:var(--mono);font-size:22px;font-weight:800;
  background:var(--grad-cool);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.group-head h3{font-size:19px;font-weight:700;}
.group-head .group-note{font-size:13.5px;color:var(--text-3);margin-left:auto;}

.qa-grid{margin-bottom:-20px;}
.qa-grid > .cell{margin-bottom:20px;}
.qa-card{
  height:100%;
  display:flex;flex-direction:column;gap:12px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-l);
  padding:22px;
  box-shadow:var(--sh-1);
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease);
}
.qa-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(106,61,245,.28);}
.qa-card .qa-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.qa-card h4{font-size:16.5px;font-weight:700;line-height:1.5;}
.qa-card p{font-size:14.5px;color:var(--text-2);line-height:1.7;}
.qa-card .qa-foot{margin-top:auto;padding-top:6px;}
.qa-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-1);
}
.qa-link svg{width:16px;height:16px;transition:transform 220ms var(--ease);}
.qa-link:hover svg{transform:translateX(4px);}

/* ---------- FAQ 手风琴 ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-m);
  overflow:hidden;transition:box-shadow 240ms var(--ease),border-color 240ms var(--ease);
}
.faq-item.is-open{border-color:rgba(106,61,245,.3);box-shadow:var(--sh-1);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:16px;
  padding:20px 22px;text-align:left;
  font-size:16px;font-weight:700;color:var(--text);
  transition:color 200ms var(--ease);
}
.faq-q:hover{color:var(--brand-1);}
.faq-q .q-text{flex:1;}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--soft);color:var(--brand-1);
  display:inline-flex;align-items:center;justify-content:center;
  transition:transform 240ms var(--ease),background-color 240ms var(--ease),color 240ms var(--ease);
}
.faq-icon svg{width:14px;height:14px;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background-image:var(--grad-brand);color:#fff;}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 260ms var(--ease);
}
.faq-a-inner{
  padding:0 22px 22px;
  font-size:15px;color:var(--text-2);line-height:1.85;
}
.faq-a-inner strong{color:var(--text);}

/* ---------- CTA 大卡 ---------- */
.cta-card{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);
  background-image:var(--grad-brand);
  padding:36px 24px;
  color:#fff;
  display:grid;grid-template-columns:1fr;gap:26px;
  box-shadow:var(--sh-2);
}
@media (min-width:768px){
  .cta-card{grid-template-columns:1.05fr .95fr;gap:40px;padding:48px 44px;align-items:center;}
}
.cta-card::before{
  content:"";position:absolute;top:-120px;right:-60px;width:340px;height:340px;
  background:radial-gradient(circle,rgba(255,255,255,.32),transparent 68%);
  pointer-events:none;
}
.cta-copy{position:relative;}
.cta-copy h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:-.4px;color:#fff;}
.cta-copy p{margin-top:12px;color:rgba(255,255,255,.9);font-size:15.5px;line-height:1.75;max-width:460px;}
.cta-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.cta-badges .badge{background:rgba(255,255,255,.18);color:#fff;border:1px solid rgba(255,255,255,.35);}
.cta-form{
  position:relative;
  background:rgba(255,255,255,.96);
  border-radius:var(--r-l);padding:22px;
  display:flex;flex-direction:column;gap:14px;
  box-shadow:0 20px 44px -26px rgba(20,16,36,.6);
}
.cta-form label{
  display:block;font-size:13px;font-weight:600;color:var(--text-2);margin-bottom:7px;
}
.cta-form select,.cta-form textarea{
  width:100%;border:1px solid var(--line);border-radius:12px;
  background:#fff;color:var(--text);outline:none;
  font-size:14.5px;
  transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease);
}
.cta-form select{height:48px;padding:0 14px;}
.cta-form textarea{padding:12px 14px;line-height:1.6;resize:vertical;min-height:96px;}
.cta-form select:focus,.cta-form textarea:focus{border-color:var(--brand-1);box-shadow:0 0 0 4px rgba(106,61,245,.14);}
.cta-form .btn{width:100%;}
.form-tip{font-size:12.5px;color:var(--text-3);line-height:1.6;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--night);
  color:#D9D5E8;
  padding-top:56px;
  margin-top:8px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background-image:var(--grad-brand);
}
.footer-top{
  display:grid;grid-template-columns:1fr;gap:32px;
  padding-bottom:40px;
}
@media (min-width:640px){.footer-top{grid-template-columns:1fr 1fr;gap:32px 28px;}}
@media (min-width:1024px){.footer-top{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}}
.footer-brand .brand{color:#fff;}
.footer-brand .brand:hover{color:#fff;}
.footer-brand .brand-name{color:#fff;}
.footer-brand p{
  margin-top:16px;font-size:14px;line-height:1.8;color:rgba(217,213,232,.78);max-width:380px;
}
.footer-title{
  font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.2px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  font-size:14px;color:rgba(217,213,232,.8);
  transition:color 200ms var(--ease),transform 200ms var(--ease);
  display:inline-block;
}
.footer-links a:hover,.footer-links a:focus{color:#fff;transform:translateX(3px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 34px;
  display:flex;flex-direction:column;gap:8px;
  font-size:13px;color:rgba(217,213,232,.62);
}
@media (min-width:768px){
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}
}

/* ---------- 移动端底部 Tab ---------- */
.tabbar{
  display:none;
  position:fixed;left:0;right:0;bottom:0;z-index:85;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom);
}
.tabbar-inner{
  display:grid;grid-template-columns:repeat(5,1fr);
  height:56px;
}
.tab-item{
  position:relative;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  font-size:11px;font-weight:600;color:var(--text-3);
  transition:color 200ms var(--ease);
}
.tab-item svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
.tab-item:hover,.tab-item:focus{color:var(--brand-1);}
.tab-item.is-active{color:var(--brand-1);}
.tab-item.is-active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:26px;height:2px;border-radius:2px;background:var(--grad-brand);
}
@media (max-width:1023px){
  .tabbar{display:block;}
  body{padding-bottom:64px;}
}
@media (max-width:767px){
  .main-nav,.nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
}

/* ---------- 动效与辅助 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 460ms var(--ease),transform 460ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
.text-mono{font-family:var(--mono);}
.visually-hidden{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
@media print{
  .site-header,.tabbar,.cta-form{display:none;}
}