/* roulang page: index */
:root {
  --bg-dark: #101216;
  --bg-dark-panel: #171A1F;
  --bg-light: #F7F3EC;
  --bg-card: #FFFFFF;
  --text-light: #F2EFE8;
  --text-light-soft: rgba(242,239,232,0.72);
  --text-dark: #1F2324;
  --text-dark-soft: #4A4E50;
  --accent: #E57A32;
  --accent-strong: #F08A45;
  --muted-teal: #4E9C91;
  --line-dark: rgba(255,255,255,0.08);
  --line-light: rgba(20,24,26,0.10);
  --radius-lg: 20px;
  --radius-card: 12px;
  --radius-control: 8px;
  --font-display: "Iowan Old Style","Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-body: "Inter","PingFang SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg-dark);color:var(--text-light);
  font-family:var(--font-body);line-height:1.7;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote,ul,ol,dl,dd{margin:0}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font-family:inherit;font-size:inherit}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{
  max-width:1280px;margin:0 auto;padding-left:clamp(20px,4vw,48px);
  padding-right:clamp(20px,4vw,48px);
}
.section{padding:clamp(64px,10vw,120px) 0}
.eyebrow{
  display:inline-block;font-size:0.75rem;font-weight:600;
  letter-spacing:0.18em;text-transform:uppercase;
  color:var(--accent);margin-bottom:14px;
}
.h2-title{
  font-family:var(--font-display);font-weight:600;
  font-size:clamp(1.9rem,3.6vw,2.8rem);line-height:1.18;
}
/* ===== 悬浮胶囊导航 ===== */
.site-header{
  position:fixed;top:16px;left:50%;transform:translateX(-50%);
  width:calc(100% - 32px);max-width:1200px;z-index:1000;
  background:rgba(16,18,22,0.72);backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line-dark);border-radius:999px;
}
.topnav{display:flex;align-items:center;height:64px;padding:0 22px}
.brand-area{display:flex;align-items:baseline;gap:10px;flex-shrink:0}
.brand{
  font-family:var(--font-display);font-size:1.12rem;font-weight:700;
  color:var(--text-light);letter-spacing:0.02em;white-space:nowrap;
}
.brand::before{
  content:"";display:inline-block;width:9px;height:9px;border-radius:50%;
  background:var(--accent);margin-right:9px;vertical-align:1px;
}
.brand-domain{
  font-size:10px;letter-spacing:0.06em;color:rgba(242,239,232,0.38);
  white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:40px;flex:1;flex-wrap:nowrap}
.nav-link{
  position:relative;padding:10px 16px;border-radius:999px;font-size:0.95rem;
  font-weight:500;color:rgba(242,239,232,0.8);transition:background .2s,color .2s;
  white-space:nowrap;
}
.nav-link:hover{background:rgba(255,255,255,0.06);color:var(--text-light)}
.nav-link.active{color:var(--text-light)}
.nav-link.active::after{
  content:"";position:absolute;left:18px;right:18px;bottom:2px;height:3px;
  border-radius:3px;background:var(--accent);
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.btn-nav{
  display:inline-flex;align-items:center;justify-content:center;height:40px;
  padding:0 22px;border-radius:999px;background:var(--accent);color:#fff;
  font-weight:600;font-size:0.9rem;transition:background .2s,transform .2s;
}
.btn-nav:hover{background:var(--accent-strong)}
.nav-toggle{
  display:none;width:44px;height:44px;background:transparent;border:1px solid rgba(255,255,255,0.14);
  border-radius:999px;cursor:pointer;align-items:center;justify-content:center;
  flex-direction:column;gap:4px;padding:0;
}
.nav-toggle span{width:16px;height:2px;background:var(--text-light);border-radius:2px;transition:transform .2s}
/* ===== 通用按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 28px;border-radius:999px;font-weight:600;
  font-size:0.98rem;border:none;cursor:pointer;transition:background .2s,box-shadow .2s,transform .2s;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-strong);box-shadow:0 8px 22px rgba(229,122,50,0.25)}
.btn-ghost{background:rgba(255,255,255,0.04);color:var(--text-light);border:1px solid rgba(255,255,255,0.18)}
.btn-ghost:hover{background:rgba(255,255,255,0.09);border-color:rgba(255,255,255,0.35)}
.btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,0.45)}
.btn-outline-light:hover{background:rgba(255,255,255,0.08)}
.btn:active{transform:scale(0.98)}
/* ===== Hero ===== */
.hero{
  position:relative;min-height:min(100vh,860px);display:flex;align-items:center;
  justify-content:center;text-align:center;overflow:hidden;background-color:var(--bg-dark);
  padding:160px 20px 120px;
}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(16,18,22,0.12) 0%,rgba(16,18,22,0.4) 55%,rgba(16,18,22,0.92) 100%);
}
.hero-stars{
  position:absolute;inset:0;opacity:0.7;
  background-image:
    radial-gradient(circle at 16% 30%,rgba(255,255,255,0.5) 1px,transparent 1px),
    radial-gradient(circle at 54% 18%,rgba(255,255,255,0.35) 1px,transparent 1px),
    radial-gradient(circle at 80% 44%,rgba(255,255,255,0.45) 1px,transparent 1px),
    radial-gradient(circle at 68% 74%,rgba(255,255,255,0.3) 1px,transparent 1px),
    radial-gradient(circle at 28% 68%,rgba(255,255,255,0.4) 1px,transparent 1px);
  background-size:340px 260px;
}
.hero-content{position:relative;z-index:2;max-width:860px}
.hero-kicker{
  font-size:0.78rem;font-weight:600;letter-spacing:0.22em;text-transform:uppercase;
  color:var(--accent);margin-bottom:20px;
}
.hero h1{
  font-family:var(--font-display);font-weight:600;line-height:1.12;
  font-size:clamp(2.7rem,6vw,5.2rem);letter-spacing:0.01em;color:var(--text-light);
  text-shadow:0 6px 30px rgba(0,0,0,0.35);
}
.hero-sub{
  font-family:var(--font-display);font-size:clamp(1.1rem,1.7vw,1.4rem);
  line-height:1.75;color:rgba(242,239,232,0.86);margin:28px auto 16px;
  max-width:640px;font-weight:500;
}
.hero-note{font-size:0.95rem;color:rgba(242,239,232,0.7);margin-bottom:34px}
.hero-actions{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap}
.hero-actions .btn{min-height:50px;padding:0 34px}
.arrow-link{display:inline-flex;align-items:center;gap:6px;transition:gap .2s,color .2s}
.arrow-link:hover{gap:10px;color:var(--accent)}
.scroll-hint{
  position:absolute;bottom:34px;left:50%;transform:translateX(-50%);z-index:4;
  display:flex;flex-direction:column;align-items:center;gap:10px;
  font-size:0.8rem;color:rgba(242,239,232,0.55);letter-spacing:0.16em;
}
.scroll-hint span{
  width:1px;height:42px;background:rgba(255,255,255,0.32);position:relative;overflow:hidden;
}
.scroll-hint span::after{
  content:"";position:absolute;left:0;top:-40%;width:100%;height:40%;
  background:var(--accent);animation:scrollLine 1.8s ease-in-out infinite;
}
@keyframes scrollLine{
  0%{top:-40%}
  100%{top:120%}
}
/* ===== 横滑片库 ===== */
.library-section{background:var(--bg-dark);position:relative;overflow:hidden}
.library-section::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--line-dark);
}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;
  flex-wrap:wrap;
}
.section-head h2{color:var(--text-light)}
.section-head p{color:var(--text-light-soft);margin-top:6px;max-width:560px}
.view-all{
  display:inline-flex;align-items:center;gap:6px;font-size:0.95rem;font-weight:600;
  color:rgba(242,239,232,0.75);border-radius:999px;padding:9px 18px;
  border:1px solid rgba(255,255,255,0.12);transition:all .2s;flex-shrink:0;
}
.view-all:hover{color:var(--accent);border-color:rgba(229,122,50,0.4)}
.slider-shell{position:relative}
.slider-window{overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding-bottom:8px}
.slider-window::-webkit-scrollbar{display:none}
.card-slider{display:flex;gap:16px;width:max-content;padding:4px 4px 8px}
.swiper-card{
  scroll-snap-align:start;width:clamp(220px,24vw,320px);border-radius:16px;
  overflow:hidden;background:var(--bg-dark-panel);border:1px solid var(--line-dark);
  transition:transform .3s,box-shadow .3s;flex-shrink:0;
}
.swiper-card:hover{transform:translateY(-4px);box-shadow:0 10px 24px rgba(0,0,0,0.34)}
.cover-wrap{position:relative;aspect-ratio:2/3;overflow:hidden;background:var(--bg-dark-panel)}
.cover-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.swiper-card:hover .cover-wrap img{transform:scale(1.04)}
.cover-badge{
  position:absolute;top:12px;left:12px;z-index:2;font-size:0.72rem;font-weight:600;
  color:var(--text-light);background:rgba(229,122,50,0.9);padding:5px 10px;border-radius:999px;
  letter-spacing:0.04em;
}
.cover-cat{
  position:absolute;bottom:12px;left:12px;z-index:2;font-size:0.7rem;color:var(--text-light);
  background:rgba(16,18,22,0.65);backdrop-filter:blur(6px);padding:5px 10px;border-radius:999px;
  border:1px solid rgba(255,255,255,0.12);
}
.swiper-card-body{padding:16px 16px 18px}
.swiper-card-body h3{
  font-family:var(--font-display);font-size:1.12rem;font-weight:600;color:var(--text-light);
  line-height:1.4;margin-bottom:8px;
}
.swiper-card-body p{font-size:0.86rem;color:rgba(242,239,232,0.56);line-height:1.6}
.slider-arrows{
  position:absolute;right:0;bottom:12px;display:flex;gap:8px;
}
.slider-btn{
  width:44px;height:44px;border-radius:999px;border:1px solid rgba(255,255,255,0.12);
  background:rgba(23,26,31,0.9);color:var(--text-light);cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:1.1rem;
  transition:background .2s,border-color .2s;
}
.slider-btn:hover{background:var(--accent);border-color:var(--accent)}
/* ===== 热播推荐区块 ===== */
.hot-section{background:var(--bg-dark-panel);position:relative;overflow:hidden}
.hot-section::before{
  content:"";position:absolute;top:0;right:0;width:100%;height:100%;
  background-image:radial-gradient(circle,rgba(255,255,255,0.018) 1px,transparent 1px);
  background-size:260px 220px;pointer-events:none;
}
.ranking-wrap{
  display:flex;align-items:stretch;justify-content:space-between;gap:48px;
  margin-top:48px;
}
.rank-list{flex:1 1 58%;}
.rank-row{
  display:flex;align-items:center;gap:18px;padding:0 12px;min-height:76px;
  border-bottom:1px solid var(--line-dark);border-radius:var(--radius-control);
  cursor:pointer;transition:background .2s;
}
.rank-row:hover{background:rgba(255,255,255,0.04)}
.rank-num{
  font-family:var(--font-display);font-size:1.5rem;font-weight:600;width:40px;
  color:var(--accent);opacity:0.9;text-align:center;
}
.rank-info{flex:1;}
.rank-info strong{display:block;font-size:1.05rem;font-weight:600;color:var(--text-light);line-height:1.5}
.rank-info small{font-size:0.82rem;color:var(--text-light-soft);display:block;margin-top:4px}
.rank-score{font-weight:700;color:var(--accent);font-size:0.98rem;letter-spacing:0.02em;margin-left:8px}
.rank-arrow{color:rgba(242,239,232,0.3);transition:color .2s,transform .2s}
.rank-row:hover .rank-arrow{color:var(--accent);transform:translateX(4px)}
.hot-focus{
  flex:1 1 42%;background:var(--bg-dark);border-radius:var(--radius-lg);
  border:1px solid var(--line-dark);padding:32px;display:flex;flex-direction:column;
  justify-content:space-between;min-height:360px;position:relative;overflow:hidden;
}
.hot-focus::before{
  content:"";position:absolute;right:-80px;top:-80px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(229,122,50,0.14) 0%,rgba(229,122,50,0) 70%);
}
.focus-tag{font-size:0.75rem;color:var(--muted-teal);font-weight:600;letter-spacing:0.1em}
.focus-title{font-family:var(--font-display);font-size:2rem;font-weight:600;color:var(--text-light);line-height:1.25;margin-top:16px}
.focus-meta{font-size:0.9rem;color:var(--text-light-soft);margin-top:12px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.focus-desc{color:rgba(242,239,232,0.68);font-size:0.95rem;margin-top:18px;line-height:1.75}
.focus-footer{display:flex;align-items:center;justify-content:space-between;padding-top:28px;margin-top:20px;gap:18px;flex-wrap:wrap;border-top:1px solid var(--line-dark)}
.focus-footer a{color:var(--text-light);font-weight:600}
.focus-footer .btn{padding:0 22px;min-height:42px}
/* ===== 片单分区 ===== */
.tab-section{background:var(--bg-dark);position:relative}
.tab-bar{display:flex;align-items:center;gap:8px;margin-top:30px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;padding-bottom:6px}
.tab-bar::-webkit-scrollbar{display:none}
.tab-btn{
  flex-shrink:0;padding:11px 24px;border-radius:999px;background:transparent;color:rgba(242,239,232,0.7);
  border:1px solid rgba(255,255,255,0.14);font-weight:500;font-size:0.95rem;cursor:pointer;
  transition:all .2s;
}
.tab-btn:hover{color:var(--text-light);border-color:rgba(255,255,255,0.34)}
.tab-btn.active{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.tab-panel{display:none;margin-top:36px}
.tab-panel.active{display:block}
.spotlight-main{
  display:grid;grid-template-columns:1.5fr 1fr;gap:22px;border-radius:24px;overflow:hidden;
  background:var(--bg-dark-panel);border:1px solid var(--line-dark);margin-bottom:22px;
}
.spot-poster{min-height:300px;position:relative;overflow:hidden}
.spot-poster img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;transition:transform .5s}
.spot-poster:hover img{transform:scale(1.03)}
.poster-tag{position:absolute;top:18px;left:18px;z-index:3;background:rgba(16,18,22,0.7);color:var(--text-light);
  font-size:0.74rem;padding:5px 12px;border-radius:999px;border:1px solid rgba(255,255,255,0.16);
  backdrop-filter:blur(6px);
}
.spot-info{padding:34px 34px 28px;display:flex;flex-direction:column;justify-content:center}
.spot-info h3{font-family:var(--font-display);font-size:1.7rem;font-weight:600;color:var(--text-light);line-height:1.3}
.spot-info p{margin-top:16px;color:var(--text-light-soft);line-height:1.75}
.spot-bottom{margin-top:22px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.spot-bottom .score{color:var(--accent);font-weight:700}
.spot-bottom .type{background:rgba(78,156,145,0.16);color:#6FBDB2;padding:4px 10px;border-radius:999px;font-size:0.75rem}
.side-ranks{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.side-rank-card{
  background:var(--bg-dark-panel);border-radius:var(--radius-card);padding:24px;display:flex;
  flex-direction:column;border:1px solid var(--line-dark);transition:border-color .2s,transform .2s;
}
.side-rank-card:hover{transform:translateY(-3px);border-color:rgba(229,122,50,0.4)}
.entry-no{font-family:var(--font-display);font-size:0.86rem;color:var(--accent);font-weight:600}
.side-rank-card h4{font-family:var(--font-display);font-size:1.2rem;color:var(--text-light);font-weight:600;margin-top:16px;line-height:1.4}
.side-rank-card p{font-size:0.87rem;color:rgba(242,239,232,0.6);margin-top:12px;line-height:1.7;flex:1}
.side-rank-card .entry-link{font-weight:600;font-size:0.9rem;color:var(--muted-teal);margin-top:18px;display:inline-flex;align-items:center;gap:4px}
.side-rank-card .entry-link:hover{color:var(--accent)}
/* ===== CTA 横幅 ===== */
.cta-section{
  background:var(--bg-dark-panel);position:relative;overflow:hidden;padding:96px 0;
}
.cta-banner{
  position:relative;border-radius:24px;overflow:hidden;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;min-height:330px;
  display:flex;align-items:center;
}
.cta-shade{
  position:absolute;inset:0;background:linear-gradient(90deg,rgba(16,18,22,0.9) 0%,rgba(16,18,22,0.42) 100%);
}
.cta-content{position:relative;z-index:2;padding:50px clamp(24px,5vw,72px);max-width:680px}
.cta-content h2{font-family:var(--font-display);font-size:clamp(1.8rem,3vw,2.6rem);font-weight:600;color:var(--text-light);line-height:1.2}
.cta-content p{color:rgba(242,239,232,0.8);font-size:1.05rem;line-height:1.8;margin-top:16px}
.cta-actions{display:flex;align-items:center;gap:18px;margin-top:30px;flex-wrap:wrap}
.cta-actions small{color:rgba(242,239,232,0.72);font-size:0.92rem}
.cta-actions .btn{padding:0 28px;height:50px}
/* ===== 浅色资讯区 ===== */
.news-section{
  background:var(--bg-light);border-radius:24px 24px 0 0;margin-top:-26px;
  padding:clamp(70px,9vw,110px) 0;position:relative;z-index:3;
  color:var(--text-dark);
}
.news-section .h2-title{color:var(--text-dark)}
.news-section .eyebrow{color:var(--accent)}
.news-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;margin-top:50px;align-items:start}
.news-feature{display:block;border-radius:var(--radius-lg);overflow:hidden;background:#fff;
  border:1px solid var(--line-light);transition:transform .3s,box-shadow .3s}
.news-feature:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(20,24,26,0.08)}
.news-feature-img{aspect-ratio:16/9;overflow:hidden;background:#e7e2da}
.news-feature-img img{width:100%;height:100%;object-fit:cover}
.news-feature-body{padding:26px 28px}
.cat-tag{display:inline-block;font-size:0.74rem;font-weight:600;color:var(--muted-teal);
  border:1px solid rgba(78,156,145,0.32);padding:3px 12px;border-radius:999px;margin-bottom:14px}
.news-feature-body h3{font-family:var(--font-display);font-size:1.55rem;font-weight:600;color:var(--text-dark);line-height:1.35}
.news-feature-body p{font-size:0.95rem;color:var(--text-dark-soft);margin-top:14px;line-height:1.8}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:0.88rem;margin-top:20px;
  color:var(--text-dark-soft);border-top:1px solid var(--line-light);padding-top:16px}
.news-meta time{display:flex;align-items:center;gap:6px}
.read-more{font-weight:600;color:var(--accent)}
.news-feature-empty{
  display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;
  background:#fff;border:1px dashed rgba(20,24,26,0.16);border-radius:var(--radius-lg);
  min-height:360px;padding:30px;color:#8a8d8f;
}
.empty-icon{width:54px;height:54px;border-radius:50%;border:2px solid var(--line-light);position:relative;margin-bottom:16px}
.empty-icon::before,.empty-icon::after{content:"";position:absolute;background:var(--accent);border-radius:4px}
.empty-icon::before{width:4px;height:4px;left:16px;top:18px;box-shadow:14px -4px 0 var(--light-teal, var(--muted-teal)),6px 16px 0 var(--accent)}
.empty-icon::after{width:10px;height:10px;border:1px solid #d6d2cb;border-radius:50%;right:7px;top:7px;background:transparent}
.news-list{display:flex;flex-direction:column;gap:16px}
.cms-post-item{
  background:#fff;border:1px solid var(--line-light);border-radius:14px;padding:20px 22px;
  transition:all .2s;cursor:pointer;
}
.cms-post-item:hover{border-color:rgba(229,122,50,0.4);transform:translateY(-2px)}
.cms-post-cat{
  display:inline-block;font-size:0.72rem;font-weight:600;color:var(--muted-teal);
  border:1px solid rgba(78,156,145,0.28);border-radius:999px;padding:2px 11px;margin-bottom:10px;
}
.cms-post-item h3{font-family:var(--font-display);font-size:1.05rem;font-weight:600;color:var(--text-dark);line-height:1.5}
.cms-post-item h3 a{transition:color .2s}
.cms-post-item h3 a:hover{color:var(--accent)}
.cms-post-summary{font-size:0.9rem;color:var(--text-dark-soft);line-height:1.7;margin-top:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-post-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:16px;font-size:0.84rem;}
.cms-post-footer time{color:#8b8e90}
.cms-post-footer a{font-weight:600;color:var(--accent);transition:gap .2s}
.post-go{display:inline-flex;align-items:center;gap:4px}
.post-go:hover{gap:8px}
.cms-empty,
.list-empty{
  border:1px dashed rgba(20,24,26,0.16);background:#fff;padding:30px;border-radius:12px;
  font-size:0.94rem;color:#8a8d8f;text-align:center;
}
/* ===== FAQ 板块（暗色回切） ===== */
.faq-section{
  background:var(--bg-dark-panel);border-radius:32px 32px 0 0;margin-top:-22px;position:relative;z-index:2;
  padding:clamp(70px,9vw,110px) 0;
}
.faq-section .h2-title{color:var(--text-light)}
.faq-wrap{max-width:940px;margin:0 auto;margin-top:48px}
.faq-item{border-bottom:1px solid var(--line-dark);padding:0 4px}
.faq-item:first-child{border-top:1px solid var(--line-dark)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:22px 0;background:transparent;border:none;color:var(--text-light);text-align:left;
  font-size:1.05rem;font-weight:600;cursor:pointer;font-family:var(--font-body);
}
.faq-q .faq-question{position:relative;padding-left:18px}
.faq-q .faq-question::before{
  content:"";position:absolute;left:0;top:0.5em;width:6px;height:6px;border-radius:50%;
  background:var(--accent);
}
.faq-icon{position:relative;width:22px;height:22px;flex-shrink:0}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--text-light-soft);transition:all .3s;
}
.faq-icon::before{width:16px;height:2px;left:3px;top:10px}
.faq-icon::after{width:2px;height:16px;left:10px;top:3px}
.faq-item.active .faq-icon::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-a p{padding:2px 0 24px;padding-left:24px;color:rgba(242,239,232,0.72);line-height:1.85;max-width:800px}
/* ===== 收藏 CTA ===== */
.bookmark-cta{
  padding:72px 0;background:var(--bg-dark);border-top:1px solid var(--line-dark);
}
.bookmark-cta .container{
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.bookmark-cta h2{
  font-family:var(--font-display);font-size:clamp(1.6rem,2.6vw,2.4rem);font-weight:600;
  color:var(--text-light);line-height:1.3;
}
.bookmark-cta p{color:rgba(242,239,232,0.68);margin-top:10px;max-width:560px}
.bookmark-btns{display:flex;gap:14px;flex-wrap:wrap}
/* ===== Footer ===== */
.site-footer{background:var(--bg-dark);padding:72px 0 36px;border-top:1px solid rgba(255,255,255,0.06)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:50px}
.footer-brand .brand{font-size:1.28rem}
.footer-desc{color:rgba(242,239,232,0.56);font-size:0.92rem;line-height:1.8;margin-top:16px;max-width:320px}
.footer-col-title{font-size:0.82rem;letter-spacing:0.14em;text-transform:uppercase;color:var(--text-light-soft);margin-bottom:20px;font-weight:600}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{color:rgba(242,239,232,0.66);font-size:0.96rem;transition:color .2s}
.footer-links a:hover{color:var(--accent)}
.footer-copyright{
  margin-top:58px;padding-top:24px;border-top:1px solid rgba(255,255,255,0.06);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:0.84rem;color:rgba(242,239,232,0.4);
}
/* ===== 响应式 ===== */
@media (max-width:1024px){
  .spotlight-main{grid-template-columns:1fr}
  .spot-poster{min-height:260px;position:relative}
  .spot-poster img{position:relative;height:260px}
  .ranking-wrap{flex-direction:column;gap:32px}
  .side-ranks{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .topnav{padding:0 14px;height:60px}
  .brand-domain{display:none}
  .nav-actions .btn-nav{display:none}
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;background:rgba(16,18,22,0.96);
    backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
    flex-direction:column;align-items:stretch;gap:4px;padding:14px;border-radius:16px;
    border:1px solid var(--line-dark);display:none;margin-left:0;
  }
  .nav-links.is-open{display:flex}
  .nav-link{display:block;padding:14px 18px;font-size:1.02rem;border-radius:10px}
  .nav-link.active::after{display:none}
  .nav-link.active{background:rgba(255,255,255,0.07)}
  .nav-cta-mobile{
    margin-top:6px;display:flex;justify-content:center;background:var(--accent);
    color:#fff;font-weight:600;padding:13px;border-radius:999px;
  }
  .hero{padding-top:140px;min-height:640px}
  .hero-sub{font-size:1.08rem}
  .slider-window{width:calc(100% + 18px)}
  .slider-arrows{display:none}
  .news-grid{grid-template-columns:1fr;gap:32px}
  .tab-bar{gap:6px;margin-top:22px}
  .side-ranks{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .cta-banner::after{background:rgba(16,18,22,0.88) inset;content:"";position:absolute;inset:0}
}
@media (max-width:520px){
  .site-header{top:10px;width:calc(100% - 16px)}
  .topnav{height:56px;padding:0 10px}
  .brand{font-size:0.98rem}
  .brand::before{width:7px;height:7px;margin-right:6px}
  .hero h1{font-size:2.5rem}
  .hero-actions{flex-direction:column;align-items:center}
  .hero-actions .btn{width:100%;max-width:320px}
  .card-slider{gap:10px}
  .swiper-card{width:230px}
  .btn{padding:0 22px}
  .section-head{flex-direction:column;align-items:flex-start}
  .section-head .view-all{width:auto}
  .rank-row{padding:0 6px;gap:10px}
  .rank-num{width:28px;font-size:1.3rem}
  .spot-info{padding:24px 22px}
  .cta-content{padding:38px 26px}
  .cta-actions{flex-direction:column;align-items:flex-start}
  .bookmark-cta .container{flex-direction:column;align-items:flex-start}
  .footer-copyright{flex-direction:column;align-items:flex-start}
  .news-feature-body{padding:22px 20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:0.001s !important;transition-duration:0.001s !important;scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --bg0:#101216;
  --bg1:#171A1F;
  --paper:#F7F3EC;
  --white:#FFFFFF;
  --ink:#1F2324;
  --ink-soft:#4A4E50;
  --moon:#FFF8EC;
  --text-dim:rgba(242,239,232,0.64);
  --line-dark:rgba(255,255,255,0.08);
  --line-light:rgba(20,24,26,0.10);
  --brand:#E57A32;
  --brand-hover:#F08B45;
  --teal:#4E9C91;
  --error:#C0574B;
  --radius-xl:20px;
  --radius-md:12px;
  --radius-sm:8px;
  --radius-pill:999px;
  --font-display:"Iowan Old Style","Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",serif;
  --font-body:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  --shadow-lg:0 12px 20px rgba(0,0,0,0.18),0 2px 4px rgba(0,0,0,0.12);
  --space:clamp(64px,10vw,120px);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg0);
  color:var(--moon);
  font-family:var(--font-body);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
ul,ol{list-style:none}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px}
::selection{background:rgba(229,122,50,.28)}

.container{
  width:100%;
  max-width:1280px;
  margin-inline:auto;
  padding-inline:clamp(20px,4vw,48px);
}
section[id]{scroll-margin-top:112px}

.btn{
  min-height:44px;
  padding:.58rem 1.5rem;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.55rem;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:.94rem;
  font-weight:500;
  line-height:1.2;
  transition:background .28s ease,border-color .28s ease,color .28s ease,transform .28s ease,box-shadow .28s ease;
}
.btn:active{transform:scale(.98)}
.btn-primary{
  background:var(--brand);
  color:#fff;
}
.btn-primary svg{width:17px;height:17px}
.btn-primary:hover{
  background:var(--brand-hover);
  transform:translateX(2px);
  box-shadow:0 8px 18px rgba(229,122,50,.18);
}
.btn-ghost{
  background:transparent;
  border-color:rgba(255,255,255,.22);
  color:var(--moon);
}
.btn-ghost:hover{
  border-color:rgba(255,255,255,.5);
  background:rgba(255,255,255,.06);
}
.btn-dark-ghost{
  background:transparent;
  border:1px solid rgba(31,35,36,.24);
  color:var(--ink);
}
.btn-dark-ghost:hover{
  border-color:rgba(31,35,36,.5);
  background:rgba(31,35,36,.05);
}
.btn-row{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  align-items:center;
}

.badge{
  display:inline-flex;
  align-items:center;
  gap:.35rem;
  font-size:.75rem;
  font-weight:500;
  letter-spacing:.04em;
  padding:.26rem .7rem;
  border-radius:var(--radius-pill);
}
.badge-signal{
  background:var(--brand);
  color:#fff;
}
.badge-teal{
  border:1px solid rgba(78,156,145,.62);
  color:var(--teal);
}
.badge-glass{
  background:rgba(255,255,255,.09);
  border:1px solid rgba(255,255,255,.16);
  color:var(--moon);
  backdrop-filter:blur(8px);
}

.site-header{
  position:fixed;
  top:12px;
  left:0;
  right:0;
  z-index:100;
  pointer-events:none;
}
.topnav{
  pointer-events:auto;
  max-width:1200px;
  width:calc(100% - clamp(20px,4vw,48px)*2);
  margin-inline:auto;
  min-height:62px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:.5rem .8rem .5rem 1.25rem;
  border-radius:var(--radius-pill);
  border:1px solid var(--line-dark);
  background:rgba(16,18,22,.74);
  box-shadow:0 14px 34px rgba(0,0,0,.16);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.brand-area{
  display:flex;
  align-items:baseline;
  gap:.55rem;
  min-width:0;
  flex-shrink:0;
}
.brand{
  display:flex;
  align-items:center;
  gap:.45rem;
  font-family:var(--font-display);
  font-weight:600;
  font-size:1.08rem;
  line-height:1.2;
  color:var(--moon);
  white-space:nowrap;
  letter-spacing:.01em;
}
.brand::before{
  content:"";
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 4px rgba(229,122,50,.14);
  flex:0 0 auto;
}
.brand-domain{
  font-size:.62rem;
  letter-spacing:.06em;
  color:rgba(242,239,232,.32);
  white-space:nowrap;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:2px;
  padding:0;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:.4rem 1rem;
  border-radius:var(--radius-pill);
  color:var(--text-dim);
  font-size:.9rem;
  transition:background .28s ease,color .28s ease;
}
.nav-link:hover{
  background:rgba(255,255,255,.06);
  color:var(--moon);
}
.nav-link.active{
  color:var(--moon);
  background:rgba(255,255,255,.055);
}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:34%;
  right:34%;
  bottom:1px;
  height:3px;
  border-radius:var(--radius-pill);
  background:var(--brand);
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:.45rem;
  flex-shrink:0;
}
.btn-nav{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:.42rem 1.2rem;
  background:var(--brand);
  color:#fff;
  font-size:.9rem;
  border-radius:var(--radius-pill);
  transition:background .28s ease,transform .28s ease,box-shadow .28s ease;
}
.btn-nav:hover{
  background:var(--brand-hover);
  transform:translateX(2px);
  box-shadow:0 6px 14px rgba(229,122,50,.22);
}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  padding:0 9px;
  flex-direction:column;
  gap:5px;
  background:transparent;
  border:1px solid var(--line-dark);
  border-radius:var(--radius-pill);
}
.nav-toggle span{
  width:22px;
  height:2px;
  background:var(--moon);
  border-radius:var(--radius-pill);
  transition:transform .3s ease,opacity .3s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){
  transform:translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){
  transform:translateY(-7px) rotate(-45deg);
}
.nav-cta-mobile{display:none}

.hero-cat{
  position:relative;
  display:flow-root;
  background:var(--bg0);
  background-image:
    linear-gradient(180deg, rgba(16,18,22,.76) 0%, rgba(16,18,22,.26) 48%, rgba(16,18,22,.74) 100%),
    url("/assets/images/backpic/back-2.png");
  background-position:center;
  background-size:cover;
  padding:clamp(118px,13vw,146px) 0 clamp(54px,8vw,76px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.hero-cat::before{
  content:"";
  position:absolute;
  inset:auto 0 0 0;
  height:1px;
  background:repeating-linear-gradient(90deg,transparent 0 24px,rgba(255,255,255,.28) 24px 26px);
  opacity:.16;
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.45rem;
  color:var(--text-dim);
  font-size:.85rem;
  margin-bottom:clamp(20px,4vw,36px);
}
.crumb a:hover{color:var(--brand)}
.crumb-sep{opacity:.4}
.cat-hero-grid{
  display:grid;
  grid-template-columns:.8fr 1fr;
  align-items:start;
  gap:clamp(20px,4vw,48px);
}
.hero-cat .eyebrow{
  font-size:.78rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--brand);
  font-weight:500;
  margin-bottom:.75rem;
  display:block;
}
.hero-cat h1{
  font-family:var(--font-display);
  font-size:clamp(2rem,5.6vw,3.7rem);
  font-weight:600;
  line-height:1.16;
  letter-spacing:.02em;
  color:var(--moon);
  max-width:620px;
  text-wrap:balance;
}
.hero-lead{
  margin:1.25rem 0 1.75rem;
  max-width:620px;
  color:rgba(242,239,232,.74);
  font-size:calc(1rem + .05vw);
  line-height:1.85;
}
.cat-rail{
  margin-top:clamp(34px,5vw,60px);
}
.cat-rail-label{
  font-size:.78rem;
  letter-spacing:.12em;
  color:rgba(242,239,232,.46);
  margin-bottom:.75rem;
  text-transform:uppercase;
}
.cat-scroll{
  display:flex;
  gap:.55rem;
  overflow-x:auto;
  scrollbar-width:none;
  padding-bottom:2px;
  -webkit-overflow-scrolling:touch;
}
.cat-scroll::-webkit-scrollbar{display:none}
.cat-pill{
  display:inline-flex;
  align-items:center;
  white-space:nowrap;
  min-height:42px;
  padding:.36rem 1.15rem;
  border-radius:var(--radius-pill);
  border:1px solid var(--line-dark);
  background:rgba(23,26,31,.45);
  color:var(--text-dim);
  font-size:.88rem;
  transition:background .28s ease,border-color .28s ease,color .28s ease;
}
.cat-pill:hover{
  color:var(--moon);
  border-color:rgba(255,255,255,.2);
  background:rgba(255,255,255,.06);
}
.cat-pill.is-active{
  background:rgba(78,156,145,.12);
  border-color:rgba(78,156,145,.56);
  color:#B8E3DC;
  font-weight:500;
}

.paper-section{
  background:var(--paper);
  color:var(--ink-soft);
}
.paper-section .container:first-child{
  padding-top:clamp(50px,8vw,88px);
  padding-bottom:clamp(50px,8vw,88px);
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  margin-bottom:28px;
}
.section-head .eyebrow{
  font-size:.75rem;
  letter-spacing:.22em;
  color:var(--teal);
  text-transform:uppercase;
  display:block;
  margin-bottom:.5rem;
}
.section-title{
  font-family:var(--font-display);
  font-size:clamp(1.9rem,3.6vw,2.8rem);
  color:var(--ink);
  font-weight:600;
  line-height:1.25;
  letter-spacing:.01em;
}
.section-sub{
  max-width:240px;
  font-size:.9rem;
  color:var(--ink-soft);
}
.split-grid{
  display:grid;
  grid-template-columns:minmax(0,1.12fr) minmax(340px,.9fr);
  gap:clamp(24px,4vw,58px);
}
.feature-card{
  border-radius:var(--radius-xl);
  overflow:hidden;
  background:#121416;
  border:1px solid var(--line-light);
  position:relative;
  min-height:460px;
  display:flex;
  align-items:flex-end;
  box-shadow:0 10px 25px rgba(20,24,26,.08);
  transition:transform .4s ease,box-shadow .4s ease;
}
.feature-card:hover{
  transform:translateY(-4px);
  box-shadow:0 20px 36px rgba(20,24,26,.14);
}
.feature-card img.feature-img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .45s ease;
}
.feature-card:hover img.feature-img{transform:scale(1.03)}
.feature-card::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(16,18,22,.02) 20%,rgba(16,18,22,.76) 100%);
}
.feature-body{
  position:relative;
  z-index:2;
  padding:clamp(20px,3vw,34px);
  color:var(--moon);
}
.feature-body .mini-label{
  background:rgba(229,122,50,.92);
  border-radius:var(--radius-pill);
  color:#fff;
  font-size:.76rem;
  letter-spacing:.04em;
  padding:.28rem .75rem;
  display:inline-block;
  margin-bottom:.85rem;
}
.feature-card h3{
  font-family:var(--font-display);
  font-size:clamp(1.5rem,2.4vw,2rem);
  font-weight:500;
  line-height:1.3;
  margin:.3rem 0 .65rem;
}
.feature-desc{
  font-size:.93rem;
  line-height:1.75;
  color:rgba(242,239,232,.82);
  max-width:480px;
}
.tag-group{
  display:flex;
  flex-wrap:wrap;
  gap:.5rem;
  margin-top:1rem;
}
.tag{
  font-size:.74rem;
  border:1px solid rgba(255,255,255,.2);
  border-radius:var(--radius-pill);
  color:rgba(242,239,232,.86);
  padding:.2rem .7rem;
}
.update-panel{
  padding-top:1px;
}
.update-head{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:14px;
  margin-bottom:.4rem;
}
.update-head h3{
  font-family:var(--font-display);
  font-size:1.55rem;
  color:var(--ink);
  font-weight:600;
  line-height:1.3;
}
.update-alias{
  color:rgba(31,35,36,.48);
  font-size:.88rem;
  white-space:nowrap;
}
.update-list{
  border-top:1px solid var(--line-light);
}
.update-item{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  padding:20px 2px;
  border-bottom:1px solid var(--line-light);
  transition:background .28s ease;
}
.update-item:hover{
  background:rgba(78,156,145,.055);
}
.update-item-info{
  min-width:0;
}
.update-labels{
  display:flex;
  align-items:center;
  gap:.55rem;
  margin-bottom:.25rem;
}
.update-labels .badge-teal{
  line-height:1.3;
  padding:.14rem .55rem;
}
.update-labels span:not(.badge-teal){
  font-size:.74rem;
  color:rgba(31,35,36,.48);
}
.update-item h4{
  font-size:1.02rem;
  font-weight:600;
  color:var(--ink);
  line-height:1.5;
  margin:.1rem 0 .25rem;
}
.update-item p{
  font-size:.9rem;
  color:var(--ink-soft);
  line-height:1.7;
}
.arrow-symbol{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:50%;
  background:transparent;
  color:rgba(31,35,36,.42);
  transition:background .28s ease,color .28s ease,transform .28s ease;
}
.update-item:hover .arrow-symbol{
  background:var(--brand);
  color:#fff;
  transform:translateX(3px);
}
.update-item:hover h4{color:var(--brand)}
.update-more{
  margin-top:22px;
}

.metric-strip{
  background:var(--bg0);
  position:relative;
  padding:clamp(58px,9vw,104px) 0;
  border-top:1px solid var(--line-dark);
  border-bottom:1px solid var(--line-dark);
  overflow:hidden;
}
.metric-strip::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:17px 17px;
  opacity:.22;
  pointer-events:none;
}
.metric-grid{
  position:relative;
  display:grid;
  grid-template-columns:1fr 1fr 1fr;
  gap:clamp(24px,3vw,40px);
}
.metric-item{
  position:relative;
  padding:1.6rem 0 1rem;
}
.metric-item + .metric-item::before{
  content:"";
  position:absolute;
  left:-24px;
  top:10%;
  bottom:10%;
  width:1px;
  background:var(--line-dark);
}
.metric-num{
  font-family:var(--font-display);
  color:var(--brand);
  font-size:1rem;
  font-weight:600;
  letter-spacing:.14em;
  margin-bottom:.75rem;
}
.metric-item h3{
  font-size:1.28rem;
  color:var(--moon);
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.3;
  margin-bottom:.45rem;
}
.metric-item p{
  color:rgba(242,239,232,.62);
  font-size:.92rem;
  line-height:1.72;
  max-width:280px;
}

.guide-section{
  padding:clamp(58px,9vw,100px) 0;
}
.guide-section .section-title{
  max-width:560px;
}
.guide-intro{
  max-width:520px;
  margin-bottom:34px;
  font-size:.98rem;
  line-height:1.8;
}
.theme-line{
  display:grid;
  grid-template-columns:60px 1fr auto;
  align-items:start;
  gap:18px;
  padding:clamp(20px,3vw,32px) 2px;
  border-top:1px solid var(--line-light);
}
.theme-line:last-child{border-bottom:1px solid var(--line-light)}
.theme-index{
  font-family:var(--font-display);
  color:var(--brand);
  font-size:1.1rem;
  font-weight:600;
  padding-top:.15rem;
}
.theme-body h3{
  font-size:1.2rem;
  color:var(--ink);
  font-weight:600;
  margin-bottom:.35rem;
  line-height:1.4;
}
.theme-body p{
  color:var(--ink-soft);
  max-width:680px;
  font-size:.93rem;
  line-height:1.8;
}
.theme-meta{
  display:inline-flex;
  gap:.4rem;
  margin-top:.55rem;
  align-items:center;
  color:rgba(31,35,36,.48);
  font-size:.8rem;
}
.theme-link{
  display:inline-flex;
  align-items:center;
  min-height:36px;
  gap:.35rem;
  border:1px solid rgba(31,35,36,.18);
  border-radius:var(--radius-pill);
  padding:.25rem .95rem;
  font-size:.85rem;
  color:var(--ink);
  transition:background .28s ease,border-color .28s ease,color .28s ease;
  white-space:nowrap;
}
.theme-link:hover{
  border-color:var(--brand);
  color:var(--brand);
  background:rgba(229,122,50,.05);
}

.process-section{
  background:var(--bg0);
  position:relative;
  overflow:hidden;
  padding:clamp(58px,9vw,104px) 0;
}
.process-section::after{
  content:"";
  position:absolute;
  top:0;
  right:0;
  width:200px;
  height:200px;
  background-image:radial-gradient(rgba(255,255,255,.08) 1px,transparent 1px);
  background-size:17px 17px;
  opacity:.36;
  pointer-events:none;
}
.process-section .eyebrow{
  display:block;
  font-size:.75rem;
  color:var(--teal);
  letter-spacing:.22em;
  margin-bottom:.6rem;
  text-transform:uppercase;
}
.process-title{
  font-family:var(--font-display);
  font-size:clamp(1.8rem,3.4vw,2.7rem);
  color:var(--moon);
  margin-bottom:clamp(24px,4vw,42px);
  font-weight:600;
  line-height:1.25;
}
.steps-grid{
  display:grid;
  grid-template-columns:1fr 1fr 1fr;
  gap:clamp(18px,2.4vw,28px);
}
.step-card{
  position:relative;
  border:1px solid var(--line-dark);
  border-radius:var(--radius-md);
  padding:24px 22px;
  background:rgba(23,26,31,.36);
  min-height:190px;
  transition:transform .32s ease,border-color .32s ease,background .32s ease;
}
.step-card:hover{
  transform:translateY(-4px);
  border-color:rgba(229,122,50,.55);
  background:rgba(23,26,31,.8);
}
.step-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;
  height:34px;
  border-radius:50%;
  background:rgba(229,122,50,.16);
  border:1px solid rgba(229,122,50,.5);
  color:#E0A87E;
  font-family:var(--font-display);
  font-size:1rem;
  margin-bottom:1.1rem;
}
.step-card h3{
  font-size:1.22rem;
  font-family:var(--font-display);
  color:var(--moon);
  font-weight:600;
  line-height:1.35;
  margin-bottom:.4rem;
}
.step-card p{
  color:rgba(242,239,232,.62);
  font-size:.9rem;
  line-height:1.75;
}
.step-arrow{
  position:absolute;
  top:30px;
  right:23px;
  color:rgba(255,255,255,.14);
  font-size:1rem;
}

.faq-section{
  background:var(--paper);
  color:var(--ink-soft);
  padding:clamp(58px,9vw,100px) 0;
  border-top:1px solid var(--line-light);
}
.faq-wrap{
  max-width:840px;
  margin-top:34px;
}
.faq-item{
  border-bottom:1px solid var(--line-light);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  list-style:none;
  cursor:pointer;
  font-size:1.06rem;
  font-weight:600;
  color:var(--ink);
  padding:22px 4px;
  min-height:44px;
  transition:color .28s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";display:none;
}
.faq-item summary .q-icon{
  flex:0 0 auto;
  width:28px;
  height:28px;
  border:1px solid rgba(31,35,36,.2);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  color:rgba(31,35,36,.48);
  font-weight:400;
  transition:background .28s ease,color .28s ease,transform .3s ease,border-color .28s ease;
}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary:hover .q-icon{border-color:var(--brand);color:var(--brand)}
.faq-item[open] summary .q-icon{
  background:var(--brand);
  border-color:var(--brand);
  color:#fff;
  transform:rotate(45deg);
}
.faq-answer{
  padding:0 4px 22px;
  max-width:720px;
  color:var(--ink-soft);
  font-size:.96rem;
  line-height:1.85;
}
.faq-answer a{
  color:var(--brand);
  text-decoration:underline;
  text-underline-offset:4px;
}

.cta-space{
  position:relative;
  display:flex;
  align-items:center;
  background:var(--bg0);
  background-image:
    linear-gradient(180deg,rgba(16,18,22,.88) 0%,rgba(16,18,22,.58) 60%,rgba(16,18,22,.86) 100%),
    url("/assets/images/backpic/back-3.webp");
  background-position:center;
  background-size:cover;
  padding:clamp(70px,10vw,130px) 0;
}
.cta-inner{
  max-width:720px;
}
.cta-space .eyebrow{
  display:block;
  font-size:.75rem;
  letter-spacing:.22em;
  color:var(--brand);
  text-transform:uppercase;
  margin-bottom:.7rem;
}
.cta-space h2{
  font-family:var(--font-display);
  font-size:clamp(1.8rem,3.6vw,2.8rem);
  color:var(--moon);
  font-weight:600;
  line-height:1.25;
  margin-bottom:1rem;
}
.cta-space p{
  color:rgba(242,239,232,.76);
  font-size:1rem;
  line-height:1.85;
  margin-bottom:1.8rem;
}

.site-footer{
  background:var(--bg0);
  border-top:1px solid var(--line-dark);
  padding:clamp(48px,7vw,78px) 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.2fr .8fr .9fr;
  gap:clamp(20px,4vw,70px);
  margin-bottom:34px;
}
.footer-brand .brand{
  color:var(--moon);
}
.footer-desc{
  margin-top:1rem;
  color:rgba(242,239,232,.58);
  max-width:350px;
  font-size:.93rem;
  line-height:1.8;
}
.footer-col-title{
  font-family:var(--font-display);
  font-size:1.06rem;
  color:var(--moon);
  font-weight:600;
  margin-bottom:1rem;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:.7rem;
}
.footer-links a{
  color:rgba(242,239,232,.62);
  font-size:.9rem;
  transition:color .28s ease,transform .28s ease;
  display:inline-block;
  width:fit-content;
}
.footer-links a:hover{
  color:var(--brand);
  transform:translateX(3px);
}
.footer-copyright{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px;
  border-top:1px solid var(--line-dark);
  padding-top:20px;
  color:rgba(242,239,232,.34);
  font-size:.82rem;
}

@media (max-width:1024px){
  .split-grid{
    grid-template-columns:1.1fr .9fr;
    gap:28px;
  }
  .update-item{
    flex-direction:column;
  }
  .update-item p{
    max-width:520px;
  }
  .arrow-symbol{
    display:none;
  }
  .footer-grid{
    grid-template-columns:1fr 1fr;
  }
}

@media (max-width:860px){
  .nav-links{
    position:fixed;
    top:84px;
    right:clamp(20px,4vw,48px);
    left:clamp(20px,4vw,48px);
    margin-inline:auto;
    max-width:420px;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    background:rgba(16,18,22,.92);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    border:1px solid var(--line-dark);
    border-radius:18px;
    padding:12px;
    display:none;
    box-shadow:0 24px 44px rgba(0,0,0,.26);
  }
  .nav-links.open{
    display:flex;
  }
  .nav-link{
    padding:.8rem 1rem;
    min-height:44px;
  }
  .nav-link.active{
    background:rgba(255,255,255,.06);
  }
  .nav-link.active::after{
    left:auto;
    right:auto;
    width:5px;
    bottom:50%;
    top:auto;
    transform:translateY(50%);
  }
  .nav-actions{
    gap:8px;
  }
  .btn-nav{
    display:none;
  }
  .nav-toggle{
    display:inline-flex;
  }
  .nav-cta-mobile{
    display:inline-flex;
    margin:.4rem 0 .2rem;
    align-items:center;
    justify-content:center;
    min-height:44px;
    background:var(--brand);
    color:#fff;
    border-radius:var(--radius-pill);
    font-size:.9rem;
  }
  .nav-cta-mobile:hover{
    background:var(--brand-hover);
  }
  .brand-domain{
    display:none;
  }
  .cat-hero-grid{
    grid-template-columns:1fr;
  }
  .split-grid{
    grid-template-columns:1fr;
  }
  .metric-grid{
    grid-template-columns:1fr 1fr;
  }
  .metric-item + .metric-item::before{
    display:none;
  }
  .steps-grid{
    grid-template-columns:1fr;
  }
  .step-card{
    min-height:auto;
  }
  .theme-line{
    grid-template-columns:50px 1fr;
  }
  .theme-link{
    grid-column:2;
    width:fit-content;
  }
}

@media (max-width:640px){
  .topnav{
    padding-left:1.05rem;
    padding-right:.65rem;
  }
  .brand{
    font-size:1rem;
  }
  .hero-cat{
    padding-top:124px;
  }
  .hero-cat h1{
    font-size:clamp(2rem,9vw,2.7rem);
  }
  .hero-lead{
    font-size:.97rem;
  }
  .btn-row .btn{
    width:100%;
  }
  .section-head{
    flex-direction:column;
    align-items:flex-start;
  }
  .update-head{
    flex-direction:column;
    align-items:flex-start;
  }
  .feature-card{
    min-height:420px;
  }
  .metric-grid{
    grid-template-columns:1fr;
    gap:18px;
  }
  .footer-grid{
    grid-template-columns:1fr;
  }
  .footer-copyright{
    flex-direction:column;
  }
  .faq-item summary{
    font-size:1rem;
  }
}

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

/* roulang page: article */
:root {
  --bg-dark: #101216;
  --bg-dark-2: #171A1F;
  --paper: #F7F3EC;
  --card-white: #FFFFFF;
  --text-moon: #F2EFE8;
  --text-moon-dim: rgba(242, 239, 232, 0.72);
  --text-ink: #1F2324;
  --text-gray: #4A4E50;
  --accent: #E57A32;
  --teal: #4E9C91;
  --red: #C0574B;
  --line-dark: rgba(255, 255, 255, 0.08);
  --line-light: rgba(20, 24, 26, 0.10);
  --font-display: "Iowan Old Style", "Noto Serif SC", "Source Han Serif SC", STSong, "Songti SC", serif;
  --font-body: Inter, "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--text-gray);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; border: 0; background: none; cursor: pointer; color: inherit; }
ul, ol { margin: 0; padding: 0; }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.container {
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 48px);
}
.container-slim {
  max-width: 780px;
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 48px);
}
.container-feature {
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 48px);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ========= Nav ========= */
.site-header {
  position: fixed;
  top: 12px;
  left: 0;
  right: 0;
  z-index: 200;
  padding: 0 clamp(16px, 4vw, 48px);
  pointer-events: none;
}
.topnav {
  max-width: 1200px;
  margin-inline: auto;
  height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 0 8px 0 22px;
  border-radius: 999px;
  background: rgba(16, 18, 22, 0.72);
  border: 1px solid var(--line-dark);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.20);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  pointer-events: auto;
}
.brand-area {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  min-width: 0;
  flex-shrink: 0;
}
.brand {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 600;
  color: var(--text-moon);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.brand-domain {
  font-size: 10px;
  color: rgba(242, 239, 232, 0.40);
  letter-spacing: 0.08em;
  line-height: 1.2;
  white-space: nowrap;
}
.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex: 1;
}
.nav-link {
  font-size: 0.92rem;
  color: rgba(242, 239, 232, 0.62);
  padding: 9px 15px;
  border-radius: 999px;
  transition: color .2s, background .2s;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--text-moon);
  background: rgba(255, 255, 255, 0.06);
}
.nav-link.active {
  color: var(--text-moon);
  background: rgba(255, 255, 255, 0.08);
  position: relative;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.btn-nav {
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 500;
  white-space: nowrap;
  transition: background .25s, transform .2s;
}
.btn-nav:hover {
  background: #f0874b;
}
.btn-nav:active {
  transform: scale(0.98);
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: background .2s;
}
.nav-toggle:hover { background: rgba(255, 255, 255, 0.14); }
.nav-toggle span {
  display: block;
  width: 16px;
  height: 1.6px;
  border-radius: 2px;
  background: var(--text-moon);
  transition: transform .25s, opacity .25s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.6px) rotate(-45deg); }
.btn-nav-mobile {
  display: none;
}

/* ========= Article Stage ========= */
.article-stage {
  position: relative;
  background: var(--bg-dark);
  padding: 168px 0 96px;
  overflow: hidden;
}
.article-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(rgba(255,255,255,0.14) 1px, transparent 1.8px);
  background-size: 32px 32px;
  opacity: 0.22;
  mask-image: linear-gradient(90deg, transparent, #000 40%, #000 90%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 40%, #000 90%, transparent);
}
.article-stage::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 220px;
  height: 3px;
  border-radius: 6px 6px 0 0;
  background: var(--accent);
}
.article-stage .container-slim { position: relative; z-index: 1; }
.crumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.875rem;
  color: rgba(242, 239, 232, 0.46);
}
.crumb a { color: rgba(242, 239, 232, 0.68); transition: color .2s; }
.crumb a:hover { color: var(--accent); }
.crumb-sep { opacity: .5; }
.crumb-current { color: rgba(242, 239, 232, 0.92); }
.cat-badge {
  display: inline-flex;
  align-items: center;
  margin: 22px 0 16px;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--teal);
  border: 1px solid rgba(78,156,145,0.32);
  background: rgba(78,156,145,0.08);
}
.article-title {
  font-family: var(--font-display);
  color: var(--text-moon);
  font-size: clamp(2.2rem, 4.8vw, 3.5rem);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: 0.01em;
  max-width: 900px;
  margin: 0;
}
.article-summary {
  margin: 22px 0 0;
  max-width: 780px;
  font-size: 1.02rem;
  line-height: 1.85;
  color: rgba(242, 239, 232, 0.72);
}
.article-meta-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 24px;
  margin-top: 34px;
  font-size: 0.875rem;
  color: rgba(242, 239, 232, 0.56);
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.meta-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
}
.meta-svg { opacity: .7; }

/* ========= Article Main ========= */
.article-main {
  background: var(--paper);
  position: relative;
  padding: clamp(36px, 6vw, 64px) 0 20px;
}
.feature-frame {
  margin-bottom: clamp(36px, 6vw, 68px);
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(20,24,26,0.06);
  box-shadow: 0 4px 18px rgba(20,24,26,0.05);
}
.feature-frame img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.article-prose {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-gray);
}
.article-prose p {
  margin: 0 0 1.5em;
}
.article-prose h2 {
  font-family: var(--font-display);
  color: var(--text-ink);
  font-size: 1.8rem;
  line-height: 1.3;
  margin: 2.1em 0 0.8em;
  letter-spacing: 0.01em;
}
.article-prose h3 {
  font-family: var(--font-display);
  color: var(--text-ink);
  font-size: 1.35rem;
  line-height: 1.4;
  margin: 1.8em 0 0.7em;
}
.article-prose a {
  color: var(--text-ink);
  text-decoration: underline;
  text-underline-offset: 5px;
  text-decoration-thickness: 1px;
  transition: color .2s;
}
.article-prose a:hover { color: var(--accent); }
.article-prose img {
  border-radius: 14px;
  margin: 1.8em 0;
  width: 100%;
  height: auto;
}
.article-prose blockquote {
  margin: 1.9em 0;
  padding: 8px 0 8px 26px;
  border-left: 3px solid var(--accent);
  background: rgba(229, 122, 50, 0.055);
  border-radius: 0 12px 12px 0;
}
.article-prose blockquote p {
  margin: 0;
  color: #5A4B38;
  font-size: 1.08em;
}
.article-prose ul,
.article-prose ol {
  margin: 0 0 1.6em;
  padding-left: 1.35em;
}
.article-prose li { margin: 0.5em 0; }
.article-prose figcaption {
  font-size: 0.85rem;
  color: #7A746A;
  text-align: center;
  margin: -1em 0 1.8em;
}

.article-toolbar {
  max-width: 780px;
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 48px);
  padding-top: 34px;
  margin-top: 28px;
  border-top: 1px solid rgba(20,24,26,0.09);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 18px 30px;
}
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-chip {
  display: inline-flex;
  align-items: center;
  padding: 5px 13px;
  border-radius: 999px;
  font-size: 0.8rem;
  background: var(--card-white);
  color: var(--text-gray);
  border: 1px solid rgba(20,24,26,0.12);
  transition: border-color .2s, color .2s;
}
.tag-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.share-row {
  display: flex;
  align-items: center;
  gap: 6px 18px;
  font-size: 0.82rem;
  color: #6C6C6C;
}
.share-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: color .2s;
}
.share-item:hover { color: var(--accent); }
.share-item svg { opacity: .65; }

.article-pager-links {
  max-width: 780px;
  margin: 36px auto 0;
  padding: 0 clamp(20px, 4vw, 48px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.pager-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid rgba(20,24,26,0.14);
  background: #fff;
  font-size: 0.9rem;
  color: var(--text-ink);
  transition: border-color .2s, color .2s, transform .2s, background .2s;
}
.pager-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ========= Related ========= */
.related-band {
  margin-top: clamp(40px, 7vw, 72px);
  padding: clamp(48px, 7vw, 80px) 0 60px;
  background: #F7F3EC;
  border-top: 1px solid rgba(20,24,26,0.08);
}
.section-head-sm {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 10px;
}
.related-band h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  color: var(--text-ink);
  line-height: 1.3;
  margin: 0 0 28px;
  font-weight: 600;
}
.related-list {
  max-width: 980px;
}
.related-row {
  display: grid;
  grid-template-columns: 112px 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 16px 18px;
  margin-bottom: 12px;
  background: #fff;
  border: 1px solid rgba(20,24,26,0.09);
  border-radius: 16px;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.related-row:hover {
  border-color: rgba(229,122,50,0.55);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(31,35,36,0.05);
}
.rel-thumb {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 9px;
}
.rel-title {
  font-size: 1.02rem;
  color: var(--text-ink);
  font-weight: 600;
  margin: 0 0 4px;
}
.rel-text p {
  margin: 0;
  font-size: 0.9rem;
  color: #6E6A5F;
  line-height: 1.6;
}
.rel-arrow {
  color: var(--accent);
  font-size: 1.2rem;
  font-weight: 600;
  padding: 8px;
  transition: transform .25s;
}
.related-row:hover .rel-arrow { transform: translateX(4px); }

/* ========= Not found ========= */
.notfound-main {
  background: var(--paper);
  padding: clamp(150px, 22vh, 210px) 0 clamp(80px, 10vw, 130px);
}
.notfound-box {
  max-width: 620px;
  margin-inline: auto;
  text-align: center;
  padding: 48px 36px;
  background: #fff;
  border: 1px solid rgba(20,24,26,0.08);
  border-radius: 20px;
}
.notfound-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 22px;
  border-radius: 50%;
  background:
    radial-gradient(circle, var(--accent) 0 4%, transparent 5%),
    radial-gradient(circle, rgba(229,122,50,0.35) 0 6%, transparent 7%);
  background-size: 18px 18px, 30px 30px;
  background-position: center;
  border: 1px solid rgba(229,122,50,0.4);
}
.notfound-box h2 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--text-ink);
  margin: 0 0 10px;
}
.notfound-box p {
  margin: 0 auto 26px;
  color: var(--text-gray);
  line-height: 1.8;
  max-width: 440px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 0.92rem;
  font-weight: 500;
  transition: background .25s, transform .2s;
}
.btn-primary:hover { background: #f0874b; }
.btn-primary:active { transform: scale(0.98); }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid rgba(20,24,26,0.16);
  background: transparent;
  color: var(--text-ink);
  font-size: 0.92rem;
  transition: border-color .2s, background .2s, color .2s;
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.notfound-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ========= Footer ========= */
.site-footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--line-dark);
  padding: 56px 0 30px;
  color: rgba(242, 239, 232, 0.66);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px 50px;
}
.footer-brand .brand {
  font-size: 1.3rem;
}
.footer-desc {
  margin: 14px 0 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(242, 239, 232, 0.52);
  max-width: 330px;
}
.footer-col-title {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: rgba(242, 239, 232, 0.4);
  margin: 0 0 16px;
  font-weight: 500;
  text-transform: uppercase;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 0.9rem;
  color: rgba(242, 239, 232, 0.66);
  transition: color .2s;
}
.footer-links a:hover { color: var(--accent); }
.footer-copyright {
  margin-top: 40px;
  padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,0.07);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 20px;
  font-size: 0.82rem;
  color: rgba(242, 239, 232, 0.4);
}

/* ================= Responsive ================= */
@media (max-width: 1024px) {
  .brand-domain { display: none; }
  .nav-link { padding: 8px 11px; font-size: 0.88rem; }
  .related-row { grid-template-columns: 92px 1fr auto; }
}

@media (max-width: 768px) {
  .site-header { top: 8px; }
  .topnav { height: 60px; padding-left: 18px; }
  .brand { font-size: 1.02rem; }
  .brand-domain { display: block; }
  .nav-actions .btn-nav { display: none; }
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px 10px;
    background: rgba(16, 18, 22, 0.94);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--line-dark);
    border-radius: 16px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
  }
  .nav-links.open { display: flex; }
  .nav-link {
    font-size: 0.94rem;
    padding: 14px 16px;
    color: rgba(242, 239, 232, 0.76);
  }
  .nav-link.active { background: rgba(255,255,255,0.1); }
  .nav-link.active::after { display: none; }
  .btn-nav-mobile {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 46px;
    margin-top: 10px;
    border-radius: 999px;
    background: var(--accent);
    color: #fff;
    font-size: 0.94rem;
    font-weight: 500;
    transition: background .2s;
  }
  .btn-nav-mobile:hover { background: #f0874b; }

  .article-stage { padding: 150px 0 78px; }
  .article-title { font-size: clamp(1.9rem, 6.2vw, 2.8rem); }
  .article-summary { font-size: 0.98rem; }

  .feature-frame img { aspect-ratio: 16 / 9; }
  .article-prose { font-size: 1.02rem; }
  .related-row { grid-template-columns: 84px 1fr; }
  .rel-arrow { display: none; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px 24px;
  }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 520px) {
  .article-meta-line { gap: 10px 16px; }
  .feature-frame { border-radius: 14px; }
  .article-prose h2 { font-size: 1.55rem; }
  .related-row {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .rel-thumb { aspect-ratio: 16 / 9; }
  .article-toolbar {
    flex-direction: column;
    align-items: flex-start;
  }
  .notfound-actions { flex-direction: column; align-items: stretch; }
  .notfound-actions .btn-primary,
  .notfound-actions .btn-ghost { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
}

/* roulang page: category3 */
:root{
  --bg-dark:#101216;
  --bg-deep:#171A1F;
  --bg-deeper:#0C0E12;
  --bg-light:#F7F3EC;
  --bg-white:#FFFFFF;
  --text-warm:#F2EFE8;
  --text-warm-soft:rgba(242,239,232,0.72);
  --text-dark:#1F2324;
  --text-body:#4A4E50;
  --text-muted:#6F726E;
  --accent:#E57A32;
  --accent-soft:rgba(229,122,50,0.16);
  --mint:#4E9C91;
  --danger:#C0574B;
  --border-dark:rgba(255,255,255,0.09);
  --border-light:rgba(20,24,26,0.1);
  --radius-card:12px;
  --radius-block:20px;
  --radius-pill:999px;
  --radius-input:8px;
  --container:1280px;
  --gutter:clamp(20px,4vw,48px);
  --space:clamp(64px,10vw,120px);
  --font-display:“Iowan Old Style”,“Noto Serif SC”,“Source Han Serif SC”,STSong,serif;
  --font-body:Inter,PingFang SC,“Microsoft YaHei”,system-ui,sans-serif;
  --shadow-card:0 4px 18px rgba(10,12,16,0.14);
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0;scroll-behavior:smooth}
body{
  font-family:var(--font-body);
  background:var(--bg-dark);
  color:var(--text-warm);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body:has(.site-footer){background:var(--bg-light)}
body::selection{background:rgba(229,122,50,.28)}
a,button,input,summary{cursor:pointer;font-family:inherit}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
[type=button],button{border:0}
h1,h2,h3,h4,p,ul,ol,figure{margin-top:0}
h1,h2,h3{
  font-family:var(--font-display);
  color:inherit;
  text-wrap:balance;
}
p{text-wrap:pretty}
:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:4px;
}
.container{
  width:min(var(--container),100% - var(--gutter)*2);
  margin-inline:auto;
}
.site-header{
  position:fixed;
  top:14px;
  left:0;
  width:100%;
  z-index:60;
  padding-inline:var(--gutter);
  pointer-events:none;
}
.topnav{
  pointer-events:auto;
  max-width:1200px;
  margin-inline:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:64px;
  padding:0 12px 0 22px;
  background:rgba(16,18,22,.78);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.09);
  border-radius:var(--radius-pill);
  box-shadow:0 2px 18px rgba(0,0,0,.16);
  overflow:visible;
}
.brand-area{display:flex;align-items:baseline;flex-wrap:wrap;column-gap:12px;line-height:1.3;min-width:0}
.brand{
  font-family:var(--font-display);
  color:var(--text-warm);
  font-weight:600;
  font-size:1.13rem;
  letter-spacing:.02em;
  white-space:nowrap;
}
.brand-signal{
  display:inline-block;
  width:8px;height:8px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 4px rgba(229,122,50,.14);
  margin-right:9px;
}
.brand-domain{
  font-size:10px;
  color:rgba(242,239,232,.42);
  letter-spacing:.04em;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:2px;
}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 15px;
  font-size:.9rem;
  color:var(--text-warm-soft);
  border-radius:var(--radius-pill);
  transition:background .2s ease,color .2s ease;
  white-space:nowrap;
}
.nav-link:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-link.active,.nav-link[aria-current=page]{
  color:#fff;background:rgba(255,255,255,.06);
}
.nav-link.active::after,
.nav-link[aria-current=page]::after{
  content:“”;
  position:absolute;
  left:16px;right:16px;bottom:7px;
  height:2px;
  border-radius:2px;
  background:var(--accent);
}
.nav-actions{display:flex;align-items:center;gap:10px}
.btn-nav{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:40px;
  padding:0 18px;
  border-radius:var(--radius-pill);
  background:var(--accent);
  color:#171A1F;
  font-size:.87rem;
  font-weight:600;
  transition:filter .2s ease,transform .2s ease;
}
.btn-nav:hover{filter:brightness(1.07);color:#101216}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  background:rgba(255,255,255,.05);
  border-radius:var(--radius-pill);
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:5px;
}
.nav-toggle span{
  display:block;width:16px;height:2px;background:var(--text-warm);border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle[aria-expanded=true] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded=true] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded=true] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.btn-nav-mobile{display:none}
main{display:block}

.channel-rail{
  background:#0D0F12;
  border-top:1px solid rgba(255,255,255,.05);
  border-bottom:1px solid rgba(255,255,255,.05);
}
.channel-rail .container{
  display:flex;
  align-items:center;
  flex-wrap:nowrap;
  gap:8px;
  overflow-x:auto;
  padding-block:14px;
  scrollbar-width:none;
}
.channel-rail::-webkit-scrollbar{display:none}
.rail-link{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:7px 15px;
  border-radius:var(--radius-pill);
  font-size:.86rem;
  color:rgba(242,239,232,.64);
  border:1px solid rgba(255,255,255,.1);
  transition:border-color .2s,color .2s,background .2s;
}
.rail-link:hover{color:#fff;border-color:rgba(255,255,255,.2);background:rgba(255,255,255,.04)}
.rail-link.active{
  color:var(--accent);
  border-color:rgba(229,122,50,.55);
  background:rgba(229,122,50,.08);
}
.rail-note{
  margin-left:auto;
  font-size:.78rem;
  color:rgba(242,239,232,.38);
  white-space:nowrap;
}

.doc-hero{
  position:relative;
  min-height:min(92vh,780px);
  display:flex;
  align-items:center;
  background-color:var(--bg-dark);
  color:var(--text-warm);
  padding-top:clamp(108px,18vh,168px);
  padding-bottom:clamp(80px,15vh,150px);
  overflow:hidden;
}
.hero-media{
  position:absolute;
  inset:0;
  z-index:0;
  background:
    linear-gradient(180deg,rgba(10,11,14,.74) 0%,rgba(10,12,16,.44) 52%,rgba(16,18,22,.9) 100%),
    radial-gradient(circle at 76% 22%,rgba(229,122,50,.1),transparent 34%),
    radial-gradient(rgba(255,255,255,.09) 1px,transparent 1.4px),
    url(/“/assets/images/backpic/back-3.webp”) center/cover no-repeat,
    linear-gradient(135deg,#11161a,#1A2022);
  background-size:auto,auto,16px 16px,cover,cover;
}
.hero-media::after{
  content:“”;
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(16,18,22,.2),transparent 60%);
}
.hero-edge{
  position:absolute;
  left:0;right:0;bottom:-1px;height:52px;
  z-index:2;
  background:
    radial-gradient(rgba(255,255,255,.18) 1px,transparent 1.4px) 4px 0/18px 18px,
    linear-gradient(112deg,transparent 49.2%,#F7F3EC 50%);
  background-color:transparent;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:3;
  width:min(1280px,100% - clamp(20px,4vw,48px)*2);
  margin-inline:auto;
  padding-block:16px 0;
}
.hero-inner .eyebrow{
  margin-bottom:20px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:0;
  font-size:.82rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:rgba(229,122,50,.9);
}
.eyebrow::before{
  content:“”;
  width:24px;height:1px;
  background:var(--accent);
}
.hero-title{
  font-weight:600;
  font-size:clamp(2.5rem,6vw,5.2rem);
  line-height:1.1;
  max-width:12ch;
  margin:22px 0 20px;
  letter-spacing:.01em;
  color:#FCFAF5;
}
.hero-title .kw{white-space:nowrap}
.hero-title .sep{color:var(--accent);padding-inline:.1em}
.hero-lead{
  max-width:680px;
  margin:0 0 34px !important;
  font-size:clamp(1rem,1.6vw,1.15rem);
  line-height:1.9;
  color:rgba(242,239,232,.86);
}
.hero-lead b{color:#fff;font-weight:600}
.hero-actions{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:16px;
  margin-bottom:56px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--radius-pill);
  font-size:.95rem;
  font-weight:500;
  transition:background .2s,transform .2s,box-shadow .2s,border-color .2s;
  cursor:pointer;
  white-space:nowrap;
}
.btn:active{transform:scale(.98)}
.btn-primary{
  background:var(--accent);
  color:#131416;
  font-weight:600;
  box-shadow:0 2px 6px rgba(229,122,50,.15);
}
.btn-primary:hover{background:#f08b43;color:#101216}
.btn-primary .arrow{transition:transform .2s ease}
.btn-primary:hover .arrow{transform:translateX(4px)}
.btn-ghost{
  background:rgba(255,255,255,.04);
  color:var(--text-warm);
  border:1px solid rgba(255,255,255,.2);
}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.34);color:#fff}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:30px;
  margin:0;
  padding:20px 0 0;
  border-top:1px solid rgba(255,255,255,.12);
  list-style:none;
}
.hero-meta li{
  font-size:.9rem;
  color:rgba(242,239,232,.64);
  display:flex;
  align-items:center;
  gap:8px;
  line-height:1.5;
}
.hero-meta strong{color:#fff;font-weight:600;font-variant-numeric:tabular-nums}
.hero-meta svg{flex:0 0 auto;color:var(--mint)}

.doc-topics{
  background:var(--bg-light);
  color:var(--text-dark);
  padding-block:var(--space);
  border-radius:0 0 0 0;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:26px;
}
.section-head h2{
  font-size:clamp(1.9rem,3.6vw,2.8rem);
  font-weight:600;
  line-height:1.2;
  margin:12px 0 4px;
  max-width:23ch;
}
.section-head p{
  color:var(--text-body);
  margin:0;
  letter-spacing:.16em;
  font-size:.82rem;
  text-transform:uppercase;
}
.headnote{
  max-width:420px;
  color:var(--text-muted)!important;
  font-size:.92rem!important;
  line-height:1.8!important;
  text-transform:none!important;
  letter-spacing:normal!important;
}
.topic-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:32px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  border-radius:var(--radius-pill);
  padding:6px 13px;
  font-size:.82rem;
  border:1px solid rgba(78,156,145,.4);
  color:#3E7F77;
  background:rgba(78,156,145,.07);
  line-height:1.4;
}
.tag-muted{
  border-color:rgba(20,24,26,.08);
  color:var(--text-muted);
  background:transparent;
}
.doc-media-card{
  display:grid;
  grid-template-columns:470px 1fr;
  column-gap:clamp(30px,5vw,76px);
  align-items:center;
  padding:20px 0 58px;
  border-bottom:1px solid var(--border-dark);
}
.media-visual{
  position:relative;
  border-radius:var(--radius-block);
  overflow:hidden;
  box-shadow:var(--shadow-card);
}
.media-visual img{
  width:100%;
  height:290px;
  object-fit:cover;
  transition:transform .45s ease;
}
.media-visual:hover img{transform:scale(1.02)}
.media-num{
  position:absolute;
  right:18px;bottom:16px;
  width:38px;height:38px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(16,18,22,.52);
  color:#fff;
  border:1px solid rgba(255,255,255,.13);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
  border-radius:50%;
  font-family:var(--font-display);
  font-size:.92rem;
}
.media-content{
  padding-right:5px;
}
.media-content .cat{
  font-size:.8rem;
  letter-spacing:.16em;
  color:var(--mint);
}
.media-content h3{
  font-size:clamp(1.55rem,2.4vw,2rem);
  font-weight:600;
  line-height:1.25;
  margin:16px 0 10px;
}
.media-content h3 a{transition:color .2s ease}
.media-content h3 a:hover{color:var(--accent)}
.media-content p{
  color:var(--text-body);
  font-size:1.01rem;
  line-height:1.85;
  max-width:56ch;
}
.media-content figure{
  margin:18px 0 0;
  padding-left:18px;
  border-left:2px solid var(--accent);
  color:var(--text-muted);
  font-size:.9rem;
  line-height:1.7;
}
.media-link-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-top:24px;
}
.media-link-row a{
  color:var(--text-dark);
  font-weight:600;
  font-size:.94rem;
  display:inline-flex;
  align-items:center;
  gap:8px;
  transition:color .2s ease;
}
.media-link-row a:hover{color:var(--accent)}
.media-link-row a svg{transition:transform .2s ease;color:var(--accent)}
.media-link-row a:hover svg{transform:translateX(4px)}
.doc-media-card:last-of-type{border-bottom:0;padding-bottom:10px}
.doc-media-card:nth-child(even){
  grid-template-columns:1fr 470px;
}
.doc-media-card:nth-child(even) .media-visual{order:2}
.doc-media-card:nth-child(even) .media-content{order:1}

.route-section{
  position:relative;
  background:var(--bg-dark);
  padding-block:var(--space);
  overflow:hidden;
}
.route-section::before{
  content:“”;
  position:absolute;
  top:0;left:0;right:0;height:1px;
  background:rgba(255,255,255,.07);
}
.route-section .container{position:relative;z-index:1}
.route-nav{
  display:inline-flex;
  margin-bottom:10px;
  gap:8px;
  align-items:center;
  font-size:.8rem;
  color:var(--mint);
  letter-spacing:.15em;
  text-transform:uppercase;
}
.route-title{
  font-size:clamp(1.9rem,3.6vw,2.8rem);
  line-height:1.25;
  font-weight:600;
  color:var(--text-warm);
  max-width:17ch;
  margin:16px 0 18px;
}
.route-title strong{color:var(--accent);font-weight:600}
.route-lead{
  max-width:610px;
  color:rgba(242,239,232,.68);
  line-height:1.9;
  margin-bottom:48px;
}
.step-grid{
  display:grid;
  grid-template-columns:2fr 2fr 1.7fr;
  gap:8px;
  align-items:stretch;
}
.step-card{
  border-radius:18px;
  background:var(--bg-deep);
  border:1px solid rgba(255,255,255,.08);
  padding:28px 24px;
  transition:transform .22s ease,border-color .22s ease;
  max-width:100%;
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(229,122,50,.3)}
.step-index{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:50%;
  background:rgba(229,122,50,.16);
  color:var(--accent);
  font-weight:700;
  font-family:var(--font-display);
  margin-bottom:18px;
}
.step-card h3{margin:0 0 10px;color:#fff;font-size:1.2rem;font-weight:500}
.step-card p{margin:0;color:rgba(242,239,232,.62);line-height:1.8;font-size:.92rem}
.route-tip{
  grid-column:1 / -1;
  border-radius:14px;
  border:1px dashed rgba(255,255,255,.1);
  background:rgba(255,255,255,.02);
  padding:16px 20px;
  color:rgba(242,239,232,.65);
  font-size:.88rem;
  display:flex;
  align-items:center;
  gap:16px;
}
.route-tip svg{flex:0 0 auto;color:var(--mint)}

.fit-section{
  background:var(--bg-white);
  color:var(--text-dark);
  padding-block:var(--space);
}
.fit-wrap{
  display:grid;
  grid-template-columns:420px 1fr;
  gap:clamp(42px,8vw,120px);
  align-items:start;
}
.fit-intro .eyebrow{color:var(--accent)}
.fit-intro h2{
  font-size:clamp(1.9rem,3.4vw,2.6rem);
  line-height:1.25;
  margin:16px 0 !important;
  font-weight:600;
}
.fit-intro p{
  color:var(--text-body);
  font-size:1.02rem;
  line-height:1.9;
  margin:0;
}
.fit-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:26px 24px;
  border-top:1px solid var(--border-light);
  padding-top:30px;
}
.feature-card{
  border-radius:16px;
  border:1px solid var(--border-light);
  background:rgb(255,255,255);
  padding:22px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.feature-card:hover{
  transform:translateY(-3px);
  box-shadow:0 4px 8px rgba(20,24,26,.05);
  border-color:rgba(78,156,145,.35);
}
.feature-icon{
  width:40px;height:40px;
  border-radius:12px;
  background:var(--accent-soft);
  color:var(--accent);
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:16px;
}
.feature-card h3{
  font-size:1.1rem;
  font-weight:600;
  margin-bottom:8px;
  color:var(--text-dark);
}
.feature-card p{color:var(--text-body);line-height:1.8;font-size:.92rem;margin:0}

.faq-section{
  background:var(--bg-light);
  color:var(--text-dark);
  padding-block:var(--space);
}
.faq-grid{
  display:grid;
  grid-template-columns:1fr 1.3fr;
  gap:clamp(40px,7vw,96px);
  align-items:start;
}
.faq-grid .eyebrow{color:var(--accent)}
.faq-grid h2{
  font-size:clamp(1.9rem,3.4vw,2.7rem);
  font-weight:600;
  line-height:1.25;
  margin:14px 0 16px;
}
.faq-grid .faq-aside p{
  color:var(--text-body);
  line-height:1.9;
  font-size:1rem;
}
.faq-list details{
  border-bottom:1px solid var(--border-light);
  padding:4px 0;
  max-width:620px;
}
.faq-list summary{
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:20px 6px 18px 0;
  color:var(--text-dark);
  font-weight:600;
  font-size:1.02rem;
  min-height:54px;
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:20px;height:20px;
  border-radius:50%;
  border:1px solid rgba(20,24,26,.14);
  transition:transform .25s ease,background .2s ease;
}
.faq-icon::before,.faq-icon::after{
  content:“”;
  position:absolute;
  top:50%;left:50%;
  width:8px;height:1px;
  background:var(--text-body);
  transform:translate(-50%,-50%);
}
.faq-icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-list details[open] .faq-icon::after{transform:translate(-50%,-50%) rotate(0deg)}
.faq-list details[open] .faq-icon{background:var(--accent-soft);border-color:rgba(229,122,50,.35)}
.faq-answer{
  padding:0 40px 22px 0;
  color:var(--text-body);
  line-height:1.9;
  font-size:.97rem;
}
.faq-footer-note{
  display:flex;
  gap:12px;
  align-items:center;
  margin-top:30px;
  background:rgba(78,156,145,.07);
  border:1px solid rgba(78,156,145,.2);
  border-radius:12px;
  padding:15px 16px;
  color:#3E7F77;
  font-size:.9rem;
  max-width:620px;
}

.cta-banner{
  position:relative;
  background:var(--bg-deep);
  color:var(--text-warm);
  overflow:hidden;
  padding-block:clamp(76px,12vw,130px);
}
.cta-banner::before,
.cta-banner::after{
  content:“”;
  position:absolute;
  border-radius:50%;
  pointer-events:none;
}
.cta-banner::before{
  width:300px;height:300px;
  right:-70px;top:-70px;
  background:radial-gradient(circle,rgba(229,122,50,.2),transparent 64%);
}
.cta-banner::after{
  content:initial;
}
.cta-inner{
  position:relative;
  z-index:1;
  text-align:center;
  max-width:800px;
  margin-inline:auto;
}
.cta-inner .eyebrow{color:var(--accent);justify-content:center}
.cta-inner h2{
  font-size:clamp(2rem,4.4vw,3.4rem);
  color:#fff;
  line-height:1.18;
  letter-spacing:.01em;
  margin:22px 0 20px;
  font-weight:600;
}
.cta-inner h2 .line-mark{color:var(--accent)}
.cta-inner p{
  font-size:1.05rem;
  color:rgba(242,239,232,.78);
  line-height:1.9;
  max-width:560px;
  margin-inline:auto;
  margin-bottom:30px;
}
.cta-actions{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:14px;
  flex-wrap:wrap;
}
.cta-note{
  margin-top:24px;
  display:block;
  font-size:.82rem;
  color:rgba(242,239,232,.45);
}

.site-footer{
  background:var(--bg-dark);
  color:var(--text-warm);
  border-top:1px solid rgba(255,255,255,.08);
  padding:clamp(52px,7vw,76px) 0 28px;
}
.site-footer .container{
  width:min(1280px,100% - clamp(20px,4vw,48px)*2);
  margin-inline:auto;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:40px 60px;
  padding-bottom:48px;
}
.footer-brand{max-width:320px}
.footer-brand .brand{
  display:inline-flex;
  align-items:center;
  font-size:1.22rem;
  color:var(--text-warm);
}
.footer-desc{
  color:rgba(242,239,232,.58);
  line-height:1.9;
  font-size:.94rem;
  margin:18px 0 0;
}
.footer-col-title{
  font-family:var(--font-body);
  font-size:.9rem;
  font-weight:600;
  color:var(--text-warm);
  margin-bottom:18px;
  letter-spacing:.08em;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:4px;
}
.footer-links a{
  display:inline-flex;
  align-items:center;
  padding:5px 0;
  font-size:.9rem;
  color:rgba(242,239,232,.55);
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:var(--accent);transform:translateX(3px)}
.footer-copyright{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:22px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:8px 30px;
  font-size:.82rem;
  line-height:1.7;
  color:rgba(242,239,232,.4);
}
@media (max-width:1200px){
  .nav-links{gap:0}
}
@media (max-width:1024px){
  .doc-media-card,
  .doc-media-card:nth-child(even){
    grid-template-columns:1fr;
    gap:26px;
  }
  .doc-media-card:nth-child(even) .media-visual{order:0}
  .doc-media-card:nth-child(even) .media-content{order:1}
  .media-visual img{height:auto;aspect-ratio:16/9}
  .step-grid{grid-template-columns:1fr 1fr}
  .step-card:last-child{grid-column:1 / -1}
  .fit-wrap,.faq-grid{grid-template-columns:1fr;gap:50px}
  .fit-intro{max-width:620px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:768px){
  body{padding-top:0}
  .topnav{
    min-height:60px;
  }
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:absolute;
    top:74px;
    left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    background:rgba(16,18,22,.92);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    border:1px solid rgba(255,255,255,.09);
    border-radius:18px;
    padding:18px;
    box-shadow:0 18px 36px rgba(0,0,0,.3);
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
  }
  .nav-links.open{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
  }
  .nav-link{
    height:46px;
    padding:0 18px;
    border-radius:12px;
  }
  .nav-link.active{background:rgba(229,122,50,.13)}
  .nav-link.active::after{display:none}
  .btn-nav{display:none}
  .btn-nav-mobile{
    display:inline-flex;
    margin-top:10px;
    min-height:46px;
    color:#101216;
    background:var(--accent);
    border-radius:var(--radius-pill);
    justify-content:center;
    align-items:center;
    font-weight:600;
    font-size:.9rem;
    text-align:center;
  }
  .channel-rail .container{padding-block:12px}
  .rail-note{display:none}
  .doc-hero{min-height:0;padding-top:118px;padding-bottom:110px}
  .hero-title{font-size:clamp(2.1rem,9vw,3.2rem);max-width:11ch}
  .hero-lead{font-size:1rem}
  .hero-meta{gap:16px 24px}
  .step-grid{grid-template-columns:1fr}
  .step-card:last-child{grid-column:auto}
  .fit-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-links a{min-height:36px}
  .ctx-copyright{flex-direction:column}
}
@media (max-width:480px){
  .brand{font-size:1rem}
  .brand-domain{display:none}
  .topnav{padding-left:16px;padding-right:8px}
  .hero-actions .btn{flex:1;min-width:150px}
  .hero-meta{flex-direction:column;gap:10px}
  .section-head{flex-direction:column;align-items:flex-start}
  .media-content h3{font-size:1.45rem}
  .cta-actions .btn{flex:1 1 100%;max-width:100%}
  .footer-copyright{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms!important;
    transition-duration:.01ms!important;
    scroll-behavior:auto!important;
  }
}

/* roulang page: category2 */
:root{
  --ink:#101216;
  --ink-soft:#171a1f;
  --paper:#f7f3ec;
  --surface:#ffffff;
  --title-dark:#f2efe8;
  --body-dark:rgba(242,239,232,0.7);
  --title-light:#1f2324;
  --body-light:#4a4e50;
  --accent:#e57a32;
  --accent-bright:#f58b40;
  --teal:#4e9c91;
  --line-dark:rgba(255,255,255,0.08);
  --line-light:rgba(20,24,26,0.10);
  --radius-xl:20px;
  --radius-lg:14px;
  --radius-md:12px;
  --radius-sm:8px;
  --font-display:"Iowan Old Style","Noto Serif SC","Source Han Serif SC","Songti SC",STSong,serif;
  --font-body:"Inter",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  --header-height:64px;
  --gutter:clamp(20px, 4vw, 48px);
  --section-space:clamp(64px, 10vw, 120px);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--ink);
  color:var(--body-light);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;outline:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
a:focus-visible,button:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:6px;
}
a:visited{color:inherit}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--title-light);line-height:1.2;text-wrap:pretty}
.container{width:min(1280px, 100% - var(--gutter) * 2);margin-inline:auto}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-body);
  font-size:0.75rem;
  letter-spacing:0.18em;
  text-transform:uppercase;
  color:var(--accent);
  font-weight:600;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);opacity:0.8}
.btn-primary,.btn-ghost,.btn-nav,.btn-nav-mobile,.faq-toggle,.cta-link{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:44px;padding:0 24px;border-radius:999px;
  font-family:var(--font-body);font-size:0.95rem;font-weight:500;
  letter-spacing:0.04em;transition:background .25s ease,color .25s ease,transform .2s ease,box-shadow .2s ease,border-color .25s ease;
}
.btn-primary{background:var(--accent);color:#fff;border:1px solid transparent}
.btn-primary:hover{background:var(--accent-bright);transform:translateX(3px)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{color:var(--title-dark);border:1px solid rgba(255,255,255,0.32);background:rgba(255,255,255,0.06)}
.btn-ghost:hover{border:1.5px solid rgba(255,255,255,0.62);background:rgba(255,255,255,0.1)}
.site-header{
  position:fixed;top:14px;left:0;right:0;z-index:1000;
  display:flex;justify-content:center;
  pointer-events:none;
}
.topnav{
  pointer-events:auto;
  width:min(1200px, 100% - 24px);
  display:flex;align-items:center;justify-content:space-between;
  min-height:58px;padding:0 22px;
  background:rgba(16,18,22,0.80);
  border:1px solid var(--line-dark);
  border-radius:999px;
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:0 18px 60px rgba(0,0,0,.22);
}
.brand-area{display:flex;flex-direction:column;line-height:1.15;margin-right:18px;min-width:0}
.brand{
  font-family:var(--font-display);
  font-size:1.04rem;font-weight:600;color:var(--title-dark);white-space:nowrap;letter-spacing:.02em;
}
.brand-domain{font-size:10px;color:rgba(242,239,232,.36);letter-spacing:.04em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;flex-wrap:nowrap}
.nav-link{
  position:relative;display:flex;align-items:center;height:44px;padding:0 15px;border-radius:8px;
  color:rgba(242,239,232,.66);font-size:0.93rem;font-weight:400;
  white-space:nowrap;transition:background .22s ease,color .22s ease;
}
.nav-link:hover{background:rgba(255,255,255,.06);color:var(--title-dark)}
.nav-link.active{color:var(--title-dark)}
.nav-link.active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:7px;height:2px;
  background:var(--accent);border-radius:999px;
}
.btn-nav{margin-left:16px;background:var(--accent);color:#fff;height:42px;min-height:42px;font-size:.9rem}
.btn-nav:hover{background:var(--accent-bright)}
.btn-nav-mobile{display:none;margin-top:8px;width:100%;background:var(--accent);color:#fff}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:8px;align-items:center;justify-content:center;
  flex-direction:column;gap:5px;border:1px solid var(--line-dark);border-radius:999px;
}
.nav-toggle span{display:block;width:17px;height:1.6px;background:var(--title-dark);transition:transform .25s ease,opacity .2s ease}
.nav-toggle.open span:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}
.channel-hero{
  position:relative;min-height:min(100vh,780px);display:flex;align-items:center;
  padding:168px 0 130px;
  background-size:cover;background-position:center center;
  color:var(--title-dark);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 38px),0 100%);
}
.channel-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:38px;
  background:linear-gradient(to top right,var(--ink) 49.5%,transparent 50%);
  pointer-events:none;
}
.hero-copy{position:relative;z-index:2;max-width:720px}
.hero-copy .eyebrow{color:var(--accent-bright)}
.hero-copy .eyebrow::before{background:var(--accent-bright)}
.hero-copy h1{
  margin:20px 0 18px;
  font-size:clamp(2.8rem, 6vw, 5rem);
  font-weight:600;line-height:1.1;letter-spacing:.01em;color:var(--title-dark);
}
.hero-copy h1 span{color:var(--accent-bright)}
.hero-lead{
  margin:0;max-width:620px;
  color:rgba(242,239,232,.78);
  font-size:clamp(1rem,1.4vw,1.18rem);
  line-height:1.9;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:18px;margin-top:36px}
.hero-note{
  display:inline-flex;align-items:center;gap:12px;
  margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,0.12);
  color:rgba(242,239,232,.48);font-size:.9rem;letter-spacing:.03em;
}
.hero-note svg{width:21px;height:21px;color:var(--accent)}
.quick-rail{
  background:var(--ink);padding:18px 0 34px;position:relative;z-index:3;
}
.rail-box{
  display:flex;align-items:center;gap:22px;flex-wrap:wrap;
  padding:14px 18px;border:1px solid var(--line-dark);border-radius:12px;
  background:rgba(23,26,31,.6);
}
.rail-label{font-size:.82rem;letter-spacing:.16em;color:rgba(242,239,232,.4)}
.rail-links{display:flex;flex-wrap:wrap;gap:8px}
.rail-link{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;
  color:rgba(242,239,232,.64);font-size:.9rem;border:1px solid transparent;
  transition:background .2s,border-color .2s,color .2s;
}
.rail-link:hover{background:rgba(255,255,255,.08);color:#fff}
.rail-link.current{background:rgba(229,122,50,0.12);border-color:rgba(229,122,50,.45);color:#fff}
.main-content{background:var(--paper)}
.page-section{padding-top:var(--section-space);padding-bottom:var(--section-space)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:42px;
  flex-wrap:wrap;
}
.section-head h2{font-size:clamp(1.9rem,3.6vw,2.8rem);font-weight:600;margin-top:10px;color:var(--title-light)}
.section-head p{color:var(--body-light);max-width:430px;font-size:.98rem;margin-top:8px}
.section-more{display:inline-flex;align-items:center;color:var(--title-light);font-size:.9rem;border-bottom:1px solid rgba(20,24,26,.35);padding-bottom:3px;transition:border-color .2s,color .2s}
.section-more:hover{color:var(--accent);border-color:var(--accent)}
.light-zone{background:var(--paper)}
.white-zone{background:var(--surface)}
.dark-zone{background:var(--ink);color:var(--body-dark)}
.dark-zone .section-head h2{color:var(--title-dark)}
.dark-zone .section-head p{color:var(--body-dark)}
.guide-grid{
  display:grid;grid-template-columns:1.13fr .87fr;gap:24px;align-items:stretch;
}
.guide-media{
  position:relative;overflow:hidden;border:1px solid var(--line-light);border-radius:var(--radius-xl);
  background:var(--surface);min-height:inherit;
}
.guide-media .tag-top{
  position:absolute;top:18px;left:18px;z-index:2;
  background:rgba(16,18,22,.68);border:1px solid rgba(255,255,255,.14);
  color:var(--title-dark);padding:6px 12px;border-radius:999px;font-size:.78rem;letter-spacing:.08em;
  backdrop-filter:blur(8px);
}
.guide-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.guide-media-body{padding:26px 28px 28px}
.guide-media-body h3{font-size:clamp(1.3rem,2vw,1.7rem);color:var(--title-light);margin-bottom:12px}
.guide-media-body p{color:var(--body-light);font-size:.98rem;margin-bottom:12px}
.guide-tag{display:inline-flex;gap:6px;flex-wrap:wrap;margin-top:4px}
.mini-tag{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;color:var(--teal);border:1px solid rgba(78,156,145,.5);font-size:.75rem;line-height:1.4}
.guide-panel{
  border:1px solid var(--line-light);border-radius:var(--radius-xl);background:var(--surface);
  padding:30px;display:flex;flex-direction:column;justify-content:center;gap:0;
}
.guide-entry{
  display:grid;grid-template-columns:48px 1fr;gap:14px;padding:22px 0;
  border-bottom:1px solid rgba(20,24,26,.08);
}
.guide-entry:first-child{padding-top:0}
.guide-entry:last-child{border-bottom:0;padding-bottom:0}
.guide-index{font-family:var(--font-display);font-size:clamp(1rem,1.8vw,1.35rem);font-weight:600;color:var(--accent);line-height:1.2}
.guide-entry h3{font-size:1.12rem;font-weight:600;color:var(--title-light)}
.guide-entry p{font-size:.9rem;color:var(--body-light);line-height:1.7;margin-top:5px}
.bento-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.bento-card{
  border:1px solid var(--line-light);border-radius:var(--radius-xl);
  background:var(--surface);overflow:hidden;min-width:0;
  transition:transform .35s ease,box-shadow .35s ease,border-color .3s ease;
}
.bento-card:hover{transform:translateY(-4px);box-shadow:0 10px 28px rgba(20,24,26,.08);border-color:rgba(229,122,50,.24)}
.bento-a{grid-column:span 7;display:grid;grid-template-columns:1.1fr .9fr}
.bento-b{grid-column:span 5}
.bento-c{grid-column:span 5}
.bento-d{grid-column:span 7}
.bento-media img{width:100%;height:100%;object-fit:cover}
.bento-media{min-height:100%}
.bento-body{padding:30px}
.bento-card .label{display:inline-block;margin-bottom:14px;font-size:.72rem;letter-spacing:.18em;color:var(--teal)}
.bento-card h3{font-size:1.45rem;font-weight:600;color:var(--title-light);margin-bottom:12px}
.bento-card p{color:var(--body-light);font-size:.96rem}
.bento-b{padding:30px;display:flex;flex-direction:column}
.bento-b .label{color:var(--accent);margin-bottom:16px}
.mini-list{list-style:none;margin-top:8px}
.mini-list li{position:relative;padding:14px 0 14px 26px;border-bottom:1px solid rgba(20,24,26,.08);color:var(--title-light);font-size:.98rem}
.mini-list li::before{content:"";position:absolute;left:0;top:23px;width:7px;height:7px;border-radius:50%;background:var(--accent);opacity:.8}
.mini-list li:last-child{border-bottom:0}
.mini-list small{display:block;color:var(--body-light);font-weight:400;font-size:.82rem;margin-top:3px}
.bento-c .card-pic{width:100%;height:190px;object-fit:cover;border-bottom:1px solid var(--line-light)}
.bento-c .inner{padding:24px}
.bento-c p{font-size:.9rem}
.bento-d{padding:30px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center}
.bento-d p{max-width:430px}
.bento-d a{display:inline-flex;color:var(--accent);font-size:.92rem;border-bottom:1px solid transparent;gap:8px;align-items:center}
.bento-d a:hover{border-color:var(--accent)}
.step-zone{background:var(--ink);color:var(--body-dark);position:relative;overflow:hidden}
.step-zone::before{content:"";position:absolute;left:0;top:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--accent) 28%,transparent)}
.step-zone .step-kicker{color:var(--accent);font-size:.75rem;letter-spacing:.2em;margin-bottom:14px}
.step-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.step-list{display:grid;gap:8px;margin-top:38px}
.step-row{
  display:grid;grid-template-columns:58px 1fr;gap:18px;align-items:start;
  padding:22px 18px;border-radius:14px;transition:background .25s ease;
}
.step-row:hover{background:rgba(255,255,255,.04)}
.step-num{font-family:var(--font-display);font-size:1.8rem;color:var(--accent);line-height:1;font-weight:600}
.step-row h3{color:var(--title-dark);font-size:1.14rem;margin-bottom:4px}
.step-row p{color:var(--body-dark);font-size:.9rem;line-height:1.7}
.step-image{
  position:relative;border-radius:var(--radius-xl);overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
}
.step-image img{width:100%;aspect-ratio:4/3;object-fit:cover}
.step-image figcaption{
  position:absolute;bottom:0;left:0;right:0;padding:28px 24px 19px;color:var(--title-dark);
  background:linear-gradient(180deg,rgba(16,18,22,0) 0%,rgba(16,18,22,.9) 78%);
  font-size:.85rem;
}
.cta-block{position:relative;padding:clamp(72px,10vw,120px) 0;background-size:cover;background-position:center;text-align:center;overflow:hidden}
.cta-block::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,18,22,.70),rgba(16,18,22,.88));}
.cta-inner{position:relative;z-index:2;width:min(700px,100% - var(--gutter)*2);margin-inline:auto}
.cta-inner .eyebrow{justify-content:center}
.cta-inner h2{color:var(--title-dark);font-size:clamp(2rem,4vw,3rem);margin-top:14px;line-height:1.2}
.cta-inner p{color:rgba(242,239,232,.78);margin:18px auto 30px;max-width:520px}
.cta-inner .actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px}
.faq-zone{background:var(--surface);padding-top:var(--section-space);padding-bottom:var(--section-space)}
.faq-zone h2{font-size:clamp(1.9rem,3vw,2.5rem)}
.faq-holder{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:start}
.faq-intro p{color:var(--body-light);margin-top:16px;max-width:300px;font-size:.94rem}
.faq-list{display:grid;gap:4px}
.faq-item{border-bottom:1px solid rgba(20,24,26,.1)}
.faq-question{
  width:100%;text-align:left;min-height:64px;padding:18px 52px 18px 4px;position:relative;
  font-family:var(--font-body);font-size:1.02rem;font-weight:600;color:var(--title-light);
  line-height:1.6;border-radius:0;transition:color .2s ease;
}
.faq-question:hover{color:var(--accent)}
.faq-question::after{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:30px;height:30px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-light);border-radius:50%;font-size:1.1rem;color:var(--accent);
  transition:transform .25s ease,background .25s,color .25s;
}
.faq-item.open .faq-question::after{transform:translateY(-50%) rotate(45deg);background:var(--accent);color:#fff;border-color:var(--accent)}
.faq-answer{
  display:grid;grid-template-rows:0fr;transition:grid-template-rows .35s ease;
  padding-left:4px;
}
.faq-item.open .faq-answer{grid-template-rows:1fr}
.faq-answer-inner{overflow:hidden}
.faq-answer p{color:var(--body-light);font-size:.95rem;line-height:1.85;padding:0 32px 24px 0}
.site-footer{background:var(--ink);color:rgba(242,239,232,.55);padding:70px 0 30px;border-top:1px solid var(--line-dark)}
.footer-grid{
  display:grid;grid-template-columns:1.35fr .8fr .9fr;gap:50px;margin-bottom:46px;
}
.footer-brand .brand{display:inline-block;font-size:1.45rem;font-weight:600;color:var(--title-dark);margin-bottom:14px}
.footer-desc{font-size:.92rem;line-height:1.85;max-width:330px;color:rgba(242,239,232,.46)}
.footer-col-title{color:var(--title-dark);font-size:.86rem;letter-spacing:.14em;margin-bottom:20px;font-family:var(--font-body);font-weight:600}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{width:fit-content;color:rgba(242,239,232,.5);font-size:.88rem;transition:color .2s ease,transform .2s ease}
.footer-links a:hover{color:var(--accent-bright);transform:translateX(3px)}
.footer-copyright{
  border-top:1px solid var(--line-dark);padding-top:22px;
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:.82rem;color:rgba(242,239,232,.34);
}
@media (min-width:769px){
  .btn-nav-mobile{display:none}
}
@media (max-width:1180px){
  .nav-link{padding:0 10px;font-size:.88rem}
  .btn-nav{margin-left:6px;padding:0 16px}
  .guide-grid{grid-template-columns:1.05fr .95fr}
  .bento-media{min-height:220px}
  .bento-d{grid-template-columns:1fr}
}
@media (max-width:1024px){
  .shrink-flow .topnav{padding:0 14px}
  .brand{margin-right:4px}
  .nav-link{padding:0 10px}
  .guide-grid{grid-template-columns:1fr}
  .guide-panel{padding:26px}
  .bento-a,.bento-b,.bento-c,.bento-d{grid-column:span 12}
  .bento-a{grid-template-columns:1fr}
  .bento-media{min-height:0}
  .bento-media img{max-height:340px}
  .bento-d{display:block}
  .step-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:768px){
  .site-header{top:6px}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn-nav{display:none}
  .nav-links{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(16,18,22,.95);border:1px solid var(--line-dark);
    padding:14px;border-radius:18px;backdrop-filter:blur(16px);
  }
  .nav-links.open{display:flex}
  .nav-link{height:46px;padding:0 14px}
  .nav-link.active::after{left:14px;right:14px;bottom:8px}
  .btn-nav-mobile{display:flex}
  .rail-box{flex-direction:column;align-items:flex-start}
  .channel-hero{min-height:calc(100vh - 104px);padding:132px 0 106px}
  .hero-actions .btn-ghost{background:rgba(255,255,255,0.05)}
  .guide-entry{grid-template-columns:44px 1fr}
  .bento-d a{display:inline-flex}
  .footer-grid{grid-template-columns:1fr}
  .footer-desc{max-width:100%}
  .faq-holder{grid-template-columns:1fr}
  .cta-inner .actions{flex-direction:column;align-items:stretch}
}
@media (max-width:520px){
  .topnav{padding:0 12px;min-height:56px}
  .brand-area{margin-right:2px}
  .brand-domain{font-size:0}
  .brand-domain::before{content:"";display:inline-block;width:14px;height:1px;background:rgba(255,255,255,.18)}
  .channel-hero{padding:118px 0 90px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions a{width:100%}
  .section-head{flex-direction:column;align-items:flex-start}
  .bento-body, .bento-b, .bento-d, .guide-panel{padding:22px}
  .bento-d p{max-width:none}
  .footer-copyright{flex-direction:column}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}