/* roulang page: index */
:root{
  --c-bg-0:#0B0C0E;
  --c-bg-1:#121418;
  --c-bg-2:#1A1D23;
  --c-t1:#F2F0EC;
  --c-t2:#A9ADB6;
  --c-t3:#6E737D;
  --c-brand:#FF4D2D;
  --c-brand-deep:#C93A20;
  --c-accent:#45E0D0;
  --c-line:rgba(255,255,255,.08);
  --c-line-strong:rgba(255,255,255,.16);
  --c-accent-soft:rgba(69,224,208,.12);
  --fs-h1:48px;
  --fs-h2:32px;
  --fs-h3:22px;
  --fs-body:16px;
  --fs-sm:15px;
  --fs-xs:13px;
  --fs-micro:11px;
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sp-6:120px;
  --r-card:16px;
  --r-ctl:10px;
  --r-pill:999px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:.3s;
  --content:1280px;
  --nav-w:96px;
  --shadow:0 20px 60px rgba(0,0,0,.55);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg-0);
  color:var(--c-t1);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:var(--fs-body);
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
input,textarea,select{font:inherit;color:inherit}
.mono{font-family:ui-monospace,"SF Mono","Menlo",monospace;font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-9999px;top:0;background:var(--c-brand);color:var(--c-t1);padding:10px 16px;border-radius:var(--r-ctl);z-index:200}
.skip:focus{left:12px;top:12px}

/* ============ 左侧竖向导航 ============ */
.sidenav{
  position:fixed;left:0;top:0;bottom:0;width:var(--nav-w);
  background:var(--c-bg-1);
  border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;
  padding:24px 0 20px;
  z-index:80;
}
.sidenav__brand{
  display:block;padding:0 12px 20px;
  border-bottom:1px solid var(--c-line);
}
.sidenav__mark{
  width:38px;height:38px;border-radius:var(--r-ctl);
  background:linear-gradient(135deg,var(--c-brand),var(--c-brand-deep));
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;letter-spacing:-.02em;color:var(--c-t1);
  margin-bottom:12px;
}
.sidenav__name{font-size:15px;font-weight:700;line-height:1.35;letter-spacing:-.01em}
.sidenav__sub{font-size:var(--fs-micro);color:var(--c-t3);margin-top:6px;line-height:1.5}
.sidenav__nav{flex:1;padding:20px 8px;display:flex;flex-direction:column;gap:6px}
.navitem{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:6px;
  min-height:48px;padding:10px 4px;border-radius:var(--r-ctl);
  color:var(--c-t2);font-size:12px;line-height:1.3;text-align:center;
  transition:background var(--dur) var(--ease),color .12s linear;
}
.navitem svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.navitem::before{
  content:"";position:absolute;left:-8px;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:26px;border-radius:0 3px 3px 0;background:var(--c-brand);
  transition:transform 200ms var(--ease);
}
.navitem:hover{background:var(--c-bg-2);color:var(--c-t1)}
.navitem.is-active{background:var(--c-bg-2);color:var(--c-t1)}
.navitem.is-active::before{transform:translateY(-50%) scaleY(1)}
.sidenav__foot{padding:16px 12px 0;border-top:1px solid var(--c-line);font-size:var(--fs-micro);color:var(--c-t3);line-height:1.7}
.sidenav__foot a{color:var(--c-accent)}
.sidenav__social{display:flex;gap:8px;margin-top:10px}
.sidenav__social span{width:26px;height:26px;border:1px solid var(--c-line-strong);border-radius:var(--r-ctl);display:flex;align-items:center;justify-content:center;font-size:10px;color:var(--c-t3)}

/* ============ 移动端顶栏与抽屉 ============ */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:90;
  background:rgba(11,12,14,.92);border-bottom:1px solid var(--c-line);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.topbar__brand{font-size:15px;font-weight:700;letter-spacing:-.01em}
.burger{width:40px;height:40px;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:var(--r-ctl);border:1px solid var(--c-line)}
.burger span{display:block;width:18px;height:2px;background:var(--c-t1);border-radius:2px;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);opacity:0;pointer-events:none;transition:opacity var(--dur) var(--ease);z-index:95}
.overlay.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:100;
  background:var(--c-bg-1);border-left:1px solid var(--c-line);
  transform:translateX(100%);transition:transform var(--dur) var(--ease);
  padding:24px 20px;display:flex;flex-direction:column;gap:12px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer__title{font-size:var(--fs-micro);color:var(--c-t3);letter-spacing:.18em;margin-bottom:4px}
.drawer__link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 16px;border:1px solid var(--c-line);border-radius:var(--r-ctl);
  background:var(--c-bg-2);color:var(--c-t2);font-size:var(--fs-sm);
}
.drawer__link.is-active{color:var(--c-t1);border-color:var(--c-line-strong)}
.drawer__link.is-active::after{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-brand)}
.drawer__note{margin-top:auto;font-size:var(--fs-micro);color:var(--c-t3);line-height:1.8;border-top:1px solid var(--c-line);padding-top:16px}

/* ============ 布局骨架 ============ */
.shell{margin-left:var(--nav-w);display:flex;flex-direction:column;min-height:100vh}
.container{width:100%;max-width:var(--content);margin:0 auto;padding:0 48px}
.section{padding-top:var(--sp-6)}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:24px}
.section__eyebrow{font-size:var(--fs-xs);color:var(--c-t3);letter-spacing:.18em;margin-bottom:10px}
.section__title{font-size:var(--fs-h2);line-height:1.3;letter-spacing:-.01em}
.section__desc{font-size:var(--fs-sm);color:var(--c-t2);margin-top:10px;max-width:640px}
.link-more{font-size:var(--fs-sm);color:var(--c-accent);white-space:nowrap;display:inline-flex;align-items:center;gap:6px;transition:gap var(--dur) var(--ease)}
.link-more:hover{gap:10px}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:var(--fs-sm);font-weight:600;letter-spacing:.01em;
  transition:filter 950ms var(--ease),transform var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--dur) var(--ease)}
.btn:hover svg{transform:translateX(3px)}
.btn--primary{background:var(--c-brand);color:var(--c-t1)}
.btn--primary:hover{filter:brightness(1.08)}
.btn--primary:active{background:var(--c-brand-deep)}
.btn--ghost{background:transparent;color:var(--c-t1);border:1px solid var(--c-line-strong)}
.btn--ghost:hover{border-color:var(--c-accent);color:var(--c-accent)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}
.btn--sm{height:40px;padding:0 20px;font-size:var(--fs-xs)}

/* ============ 标签徽章 ============ */
.tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-accent-soft);color:var(--c-accent);
  font-size:12px;line-height:1.6;white-space:nowrap;
}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-brand);color:var(--c-t1);font-size:12px;line-height:1.6;font-weight:600;
}
.badge--soft{background:rgba(255,77,45,.14);color:var(--c-brand)}

/* ============ Hero ============ */
.hero{position:relative;min-height:520px;height:88vh;display:flex;align-items:flex-end;overflow:hidden}
.hero__media{position:absolute;inset:0}
.hero__media img{width:100%;height:100%;object-fit:cover}
.hero__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,12,14,.42) 0%,rgba(11,12,14,.58) 46%,rgba(11,12,14,.96) 100%);
}
.hero__inner{position:relative;z-index:2;width:100%;padding-bottom:52px}
.hero__text{max-width:620px}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:var(--fs-xs);letter-spacing:.18em;color:var(--c-accent);margin-bottom:18px;
  animation:rise .4s var(--ease) both;
}
.hero__eyebrow::before{content:"";width:28px;height:1px;background:var(--c-accent);opacity:.6}
.hero__title{
  font-size:var(--fs-h1);line-height:1.15;letter-spacing:-.02em;font-weight:700;
  animation:rise .4s .08s var(--ease) both;
}
.hero__sub{
  font-size:var(--fs-body);color:var(--c-t2);margin-top:18px;max-width:560px;
  animation:rise .4s .16s var(--ease) both;
}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;animation:rise .4s .24s var(--ease) both}
.hero__stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  margin-top:48px;padding-top:26px;border-top:1px solid var(--c-line);
  animation:rise .4s .32s var(--ease) both;
}
.stat__num{font-family:ui-monospace,"SF Mono","Menlo",monospace;font-size:28px;line-height:1.2;color:var(--c-t1);font-weight:600}
.stat__num span{font-size:14px;color:var(--c-t3);margin-left:4px}
.stat__label{font-size:var(--fs-xs);color:var(--c-t3);margin-top:6px}
@keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ============ 横滑轨道 ============ */
.rail{margin-top:12px}
.rail__track{
  display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 20px;margin:0 -4px;
  scrollbar-width:thin;scrollbar-color:var(--c-line-strong) transparent;
}
.rail__track::-webkit-scrollbar{height:6px}
.rail__track::-webkit-scrollbar-thumb{background:var(--c-line-strong);border-radius:var(--r-pill)}
.rail__track::-webkit-scrollbar-track{background:transparent}
.rcard{
  flex:0 0 240px;scroll-snap-align:start;position:relative;
  background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rcard:hover{transform:translateY(-4px);border-color:var(--c-line-strong)}
.rcard__cover{position:relative;aspect-ratio:3/4;overflow:hidden;background:var(--c-bg-1)}
.rcard__cover img{width:100%;height:100%;object-fit:cover;transition:transform var(--dur) var(--ease)}
.rcard:hover .rcard__cover img{transform:scale(1.04)}
.rcard__cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,12,14,0) 40%,rgba(11,12,14,.85) 100%)}
.rcard__flag{position:absolute;left:12px;top:12px;z-index:2}
.rcard__arrow{
  position:absolute;right:12px;bottom:12px;z-index:3;
  width:34px;height:34px;border-radius:50%;background:rgba(11,12,14,.75);
  border:1px solid var(--c-line-strong);display:flex;align-items:center;justify-content:center;
  opacity:0;transform:translateY(6px);transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.rcard:hover .rcard__arrow{opacity:1;transform:none}
.rcard__arrow svg{width:15px;height:15px;stroke:var(--c-t1);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.rcard__body{padding:14px 16px 18px}
.rcard__title{font-size:var(--fs-sm);line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rcard__meta{font-size:var(--fs-xs);color:var(--c-t3);margin-top:8px;display:flex;align-items:center;gap:8px}
.rcard--more{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  background:var(--c-bg-1);border-style:dashed;color:var(--c-t2);text-align:center;padding:24px 16px;
}
.rcard--more strong{font-size:var(--fs-sm);color:var(--c-t1)}
.rcard--more span{font-size:var(--fs-xs);color:var(--c-t3)}
.rcard--more i{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--c-line-strong);
  display:flex;align-items:center;justify-content:center;font-style:normal;color:var(--c-accent);
}

/* ============ 热播推荐 错位网格 ============ */
.pick{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:stretch}
.pick__main{
  position:relative;display:block;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--c-line);background:var(--c-bg-2);min-height:380px;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.pick__main:hover{transform:translateY(-4px);border-color:var(--c-line-strong)}
.pick__main img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/9;transition:transform var(--dur) var(--ease)}
.pick__main:hover img{transform:scale(1.04)}
.pick__shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,12,14,.1) 30%,rgba(11,12,14,.92) 100%)}
.pick__info{position:absolute;left:0;right:0;bottom:0;padding:28px}
.pick__info h3{font-size:var(--fs-h3);line-height:1.4;margin-top:12px}
.pick__info p{font-size:var(--fs-sm);color:var(--c-t2);margin-top:10px;max-width:520px}
.pick__badge{position:absolute;right:20px;bottom:20px;z-index:3}
.pick__side{display:flex;flex-direction:column;gap:24px}
.hcard{
  display:grid;grid-template-columns:180px 1fr;gap:16px;align-items:center;
  background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:14px;transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.hcard:hover{border-color:var(--c-line-strong);transform:translateY(-4px)}
.hcard__cover{aspect-ratio:16/9;border-radius:var(--r-ctl);overflow:hidden;background:var(--c-bg-1)}
.hcard__cover img{width:100%;height:100%;object-fit:cover}
.hcard__title{font-size:var(--fs-sm);font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hcard__desc{font-size:var(--fs-xs);color:var(--c-t2);margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hcard__meta{font-size:var(--fs-xs);color:var(--c-t3);margin-top:10px;display:flex;gap:10px;align-items:center}

/* ============ 最新信息 CMS ============ */
.news__grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:16px}
.ncard{
  display:grid;grid-template-columns:200px 1fr;gap:16px;
  background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:14px;transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.ncard:hover{border-color:var(--c-accent);transform:translateY(-2px)}
.ncard__cover{aspect-ratio:16/9;border-radius:var(--r-ctl);overflow:hidden;background:var(--c-bg-1);flex:0 0 auto}
.ncard__cover img{width:100%;height:100%;object-fit:cover}
.ncard__title{font-size:18px;line-height:1.5;font-weight:600;margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ncard__title a:hover{color:var(--c-accent)}
.ncard__desc{font-size:var(--fs-sm);color:var(--c-t2);margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ncard__foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px;font-size:var(--fs-xs);color:var(--c-t3)}
.ncard__foot a{color:var(--c-accent)}
.news__more{display:flex;justify-content:center;margin-top:32px}
.pager{display:flex;align-items:center;gap:8px}
.pager a,.pager span{
  min-width:38px;height:38px;padding:0 12px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:var(--r-ctl);font-size:var(--fs-xs);color:var(--c-t2);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.pager a:hover{border-color:var(--c-line-strong);color:var(--c-t1)}
.pager .is-current{background:var(--c-brand);border-color:var(--c-brand);color:var(--c-t1)}
.empty{
  border:1px dashed var(--c-line-strong);border-radius:var(--r-card);
  background:var(--c-bg-1);padding:56px 24px;text-align:center;
}
.empty__shape{
  width:72px;height:72px;margin:0 auto 20px;border-radius:50%;
  border:1px solid var(--c-line-strong);display:flex;align-items:center;justify-content:center;color:var(--c-t3);
}
.empty p{color:var(--c-t2);font-size:var(--fs-sm)}
.empty a{display:inline-block;margin-top:16px;color:var(--c-accent);font-size:var(--fs-sm)}

/* 骨架屏 */
.skeleton{border-radius:var(--r-card);background:var(--c-bg-2);border:1px solid var(--c-line);height:132px;position:relative;overflow:hidden}
.skeleton::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.05),transparent);
  animation:sweep 1.4s infinite;
}
@keyframes sweep{from{transform:translateX(-100%)}to{transform:translateX(100%)}}

/* ============ 分类分区条 ============ */
.rows{margin-top:8px;border-top:1px solid var(--c-line)}
.rowitem{
  display:grid;grid-template-columns:96px 1fr auto;align-items:center;gap:24px;
  padding:28px 8px;border-bottom:1px solid var(--c-line);
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.rowitem:hover{transform:translateX(4px);background:var(--c-bg-1)}
.rowitem__num{
  font-family:ui-monospace,"SF Mono","Menlo",monospace;font-size:56px;line-height:1;
  color:var(--c-t1);opacity:.18;transition:opacity var(--dur) var(--ease),color var(--dur) var(--ease);
}
.rowitem:hover .rowitem__num{opacity:.65;color:var(--c-brand)}
.rowitem__title{font-size:var(--fs-h3);line-height:1.4;font-weight:600}
.rowitem__desc{font-size:var(--fs-sm);color:var(--c-t2);margin-top:8px;max-width:720px}
.rowitem__arrow{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--c-line-strong);
  display:flex;align-items:center;justify-content:center;
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.rowitem:hover .rowitem__arrow{border-color:var(--c-accent);background:var(--c-accent-soft)}
.rowitem__arrow svg{width:16px;height:16px;stroke:var(--c-t1);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ============ FAQ ============ */
.faq{max-width:860px;margin-top:8px;border-top:1px solid var(--c-line)}
.faq__item{border-bottom:1px solid var(--c-line)}
.faq__q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:16px 4px;cursor:pointer;list-style:none;
  font-size:var(--fs-body);font-weight:600;color:var(--c-t1);
  transition:color var(--dur) var(--ease);
}
.faq__q::-webkit-details-marker{display:none}
.faq__q:hover{color:var(--c-accent)}
.faq__sign{position:relative;flex:0 0 auto;width:16px;height:16px}
.faq__sign::before,.faq__sign::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-accent);
  transform:translate(-50%,-50%);transition:transform 200ms var(--ease),opacity 200ms var(--ease);
}
.faq__sign::before{width:14px;height:1.6px}
.faq__sign::after{width:1.6px;height:14px}
details[open] .faq__sign::after{transform:translate(-50%,-50%) rotate(45deg) scaleY(0)}
details[open] .faq__sign::before{transform:translate(-50%,-50%) rotate(45deg)}
.faq__a{padding:0 4px 22px;max-width:680px;font-size:var(--fs-sm);line-height:1.8;color:var(--c-t2);animation:rise .2s var(--ease) both}

/* ============ CTA 横幅 ============ */
.cta{margin-top:var(--sp-6)}
.cta__box{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--c-line);min-height:320px;
  display:flex;align-items:center;justify-content:center;text-align:center;padding:64px 24px;
}
.cta__box img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cta__shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,12,14,.72),rgba(11,12,14,.92))}
.cta__inner{position:relative;z-index:2;max-width:640px}
.cta__inner h2{font-size:var(--fs-h2);line-height:1.3;letter-spacing:-.01em}
.cta__inner p{font-size:var(--fs-sm);color:var(--c-t2);margin-top:16px}
.cta__inner .btn{margin-top:28px}

/* ============ 页脚 ============ */
.footer{margin-top:var(--sp-6);border-top:1px solid var(--c-line);background:var(--c-bg-1)}
.footer__grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding:64px 0 48px;
}
.fcol h3{font-size:var(--fs-xs);letter-spacing:.18em;color:var(--c-t3);margin-bottom:18px}
.fcol p{font-size:var(--fs-xs);color:var(--c-t2);line-height:1.9;max-width:320px}
.fcol li{margin-bottom:12px}
.fcol a{font-size:14px;color:var(--c-t2);transition:color var(--dur) var(--ease)}
.fcol a:hover{color:var(--c-t1)}
.fcol .mono{color:var(--c-t3);font-size:var(--fs-xs)}
.footer__brand{font-size:16px;font-weight:700;margin-bottom:14px;letter-spacing:-.01em}
.footer__bottom{
  border-top:1px solid var(--c-line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:var(--fs-xs);color:var(--c-t3);
}
.footer__bottom a{color:var(--c-t2)}

/* ============ 进入视口动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 断点 ============ */
@media (min-width:1440px){
  :root{--nav-w:104px}
}
@media (max-width:1439px){
  .container{padding:0 40px}
}
@media (max-width:1023px){
  :root{--nav-w:80px}
  .sidenav__name{font-size:13px}
  .sidenav__sub{display:none}
  .container{padding:0 32px}
  .pick{grid-template-columns:1fr}
  .pick__main{min-height:300px}
  .news__grid{grid-template-columns:1fr}
  .hcard{grid-template-columns:150px 1fr}
}
@media (max-width:767px){
  :root{--fs-h1:30px;--fs-h2:24px;--fs-h3:19px;--sp-6:64px}
  .sidenav{display:none}
  .topbar{display:flex}
  .shell{margin-left:0;padding-top:56px}
  .container{padding:0 20px}
  .hero{height:70vh;min-height:520px}
  .hero__inner{padding-bottom:36px}
  .hero__stats{grid-template-columns:1fr 1fr;gap:20px}
  .stat__num{font-size:22px}
  .hero__cta{gap:10px}
  .btn{height:46px;padding:0 22px}
  .pick__info{padding:20px}
  .hcard{grid-template-columns:1fr;gap:12px}
  .ncard{grid-template-columns:1fr}
  .rowitem{grid-template-columns:64px 1fr;gap:16px;padding:22px 4px}
  .rowitem__num{font-size:40px}
  .rowitem__arrow{display:none}
  .footer__grid{grid-template-columns:1fr;gap:32px;padding:48px 0 32px}
  .rcard{flex:0 0 200px}
  .news__more .btn{width:100%}
}
@media (max-width:520px){
  .hero__stats{grid-template-columns:1fr 1fr}
  .hero__title{font-size:28px}
  .section__head{flex-direction:column;align-items:flex-start;gap:12px}
  .faq__q{font-size:var(--fs-sm)}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --c-bg-0:#0B0C0E;
  --c-bg-1:#121418;
  --c-bg-2:#1A1D23;
  --c-bg-3:#0F1115;
  --c-t1:#F2F0EC;
  --c-t2:#A9ADB6;
  --c-t3:#6E737D;
  --c-brand:#FF4D2D;
  --c-brand-deep:#C93A20;
  --c-accent:#45E0D0;
  --c-line:rgba(255,255,255,.08);
  --c-line-strong:rgba(255,255,255,.16);
  --fs-h1:48px;
  --fs-h2:32px;
  --fs-h3:22px;
  --fs-body:16px;
  --fs-lead:15px;
  --fs-small:13px;
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sp-6:64px;
  --sp-7:120px;
  --r-lg:16px;
  --r-sm:10px;
  --r-pill:999px;
  --ease:cubic-bezier(.4,0,.2,1);
  --dur:.3s;
  --sh-pop:0 20px 60px rgba(0,0,0,.55);
  --font-cn:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:ui-monospace,"SF Mono","Menlo",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding-left:96px;
  background:var(--c-bg-0);
  color:var(--c-t1);
  font-family:var(--font-cn);
  font-size:var(--fs-body);
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 48px}

/* ---------- 左侧竖向导航 ---------- */
.sidenav{
  position:fixed;left:0;top:0;bottom:0;width:96px;z-index:60;
  background:var(--c-bg-1);
  border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;align-items:center;
  padding:20px 0 16px;
}
.sidenav__brand{
  display:flex;flex-direction:column;align-items:center;gap:8px;
  width:100%;padding:0 8px 20px;text-align:center;
}
.sidenav__mark{
  width:36px;height:36px;border-radius:12px;
  background:linear-gradient(140deg,var(--c-brand),var(--c-brand-deep));
  color:#fff;font-size:18px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);
}
.sidenav__name{
  font-size:12px;font-weight:700;line-height:1.35;letter-spacing:.02em;color:var(--c-t1);
}
.sidenav__nav{display:flex;flex-direction:column;gap:6px;width:100%;padding:0 8px}
.navitem{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:6px;
  min-height:60px;padding:10px 4px;border-radius:var(--r-sm);
  color:var(--c-t2);font-size:11px;line-height:1.3;text-align:center;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.navitem svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.navitem::before{
  content:"";position:absolute;left:-8px;top:50%;transform:translateY(-50%) scaleY(0);
  width:3px;height:26px;border-radius:0 3px 3px 0;background:var(--c-brand);
  transition:transform .2s var(--ease);
}
.navitem:hover{background:var(--c-bg-2);color:var(--c-t1)}
.navitem.is-active{background:var(--c-bg-2);color:var(--c-t1)}
.navitem.is-active::before{transform:translateY(-50%) scaleY(1)}
.sidenav__foot{margin-top:auto;padding:16px 8px 0;text-align:center}
.sidenav__foot a{font-size:11px;color:var(--c-t3);transition:color var(--dur) var(--ease)}
.sidenav__foot a:hover{color:var(--c-t1)}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;z-index:70;
  background:rgba(11,12,14,.94);border-bottom:1px solid var(--c-line);
  align-items:center;justify-content:space-between;padding:0 16px;
}
.topbar__brand{font-size:14px;font-weight:700;letter-spacing:.01em}
.topbar__btn{
  width:40px;height:40px;border-radius:var(--r-sm);border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;
  transition:border-color var(--dur) var(--ease);
}
.topbar__btn:hover{border-color:var(--c-line-strong)}
.topbar__btn span{display:block;width:18px;height:2px;background:var(--c-t1);position:relative}
.topbar__btn span::before,.topbar__btn span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-t1);
}
.topbar__btn span::before{top:-6px}
.topbar__btn span::after{top:6px}
.scrim{
  display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:80;
}
.scrim.is-open{display:block}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:340px;z-index:90;
  background:var(--c-bg-1);border-left:1px solid var(--c-line);
  transform:translateX(100%);transition:transform .3s var(--ease);
  padding:24px 20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer__title{font-size:15px;font-weight:700}
.drawer__close{width:36px;height:36px;border-radius:var(--r-sm);border:1px solid var(--c-line);font-size:18px;line-height:1}
.drawer__nav{display:flex;flex-direction:column;gap:8px}
.drawer__nav a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;
  border-radius:var(--r-sm);background:var(--c-bg-2);color:var(--c-t2);font-size:14px;
  transition:color var(--dur) var(--ease);
}
.drawer__nav a:hover,.drawer__nav a.is-active{color:var(--c-t1)}
.drawer__sub{margin-top:24px;padding-top:20px;border-top:1px solid var(--c-line);display:flex;flex-direction:column;gap:10px}
.drawer__sub a{font-size:13px;color:var(--c-t3)}
.drawer__sub a:hover{color:var(--c-t1)}

/* ---------- 文章页布局 ---------- */
.main{padding:var(--sp-5) 0 var(--sp-6)}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:var(--fs-small);color:var(--c-t3);margin-bottom:var(--sp-4);
}
.crumb a{color:var(--c-t2);transition:color var(--dur) var(--ease)}
.crumb a:hover{color:var(--c-accent)}
.crumb__sep{color:var(--c-t3)}
.crumb__now{
  max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--c-t3);
}
.article-head{max-width:860px;margin-bottom:var(--sp-4)}
.article-head h1{
  font-size:var(--fs-h1);line-height:1.25;letter-spacing:-.02em;color:var(--c-t1);
  margin-bottom:20px;
}
.meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:var(--fs-small);color:var(--c-t3)}
.badge{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;line-height:1.6;
}
.badge--cat{background:rgba(69,224,208,.12);color:var(--c-accent)}
.badge--hot{background:var(--c-brand);color:#F2F0EC}
.meta__dot{width:3px;height:3px;border-radius:50%;background:var(--c-t3)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:var(--sp-5)}
.article-main{min-width:0}
.article-body{
  max-width:760px;font-size:17.5px;line-height:1.9;color:var(--c-t2);
}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;margin:40px 0 16px;padding-left:14px;
  font-size:26px;line-height:1.35;color:var(--c-t1);letter-spacing:-.01em;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;width:3px;height:1em;border-radius:2px;background:var(--c-brand);
}
.article-body h3{margin:32px 0 12px;font-size:var(--fs-h3);line-height:1.4;color:var(--c-t1)}
.article-body h4{margin:24px 0 10px;font-size:17px;color:var(--c-t1)}
.article-body a{color:var(--c-accent);border-bottom:1px solid rgba(69,224,208,.35);transition:border-color var(--dur) var(--ease)}
.article-body a:hover{border-color:var(--c-accent)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:22px}
.article-body ul li,.article-body ol li{margin-bottom:8px;list-style:disc}
.article-body ol li{list-style:decimal}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--c-line-strong);
  background:var(--c-bg-1);color:var(--c-t2);border-radius:0 var(--r-sm) var(--r-sm) 0;
}
.article-body img{border-radius:12px;margin:24px auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--c-t3);text-align:center;margin-top:10px}
.article-body pre{
  margin:24px 0;padding:18px;overflow:auto;border:1px solid var(--c-line);
  border-radius:var(--r-sm);background:var(--c-bg-3);
  font-family:var(--font-mono);font-size:14px;line-height:1.7;color:var(--c-t1);
}
.article-body code{
  font-family:var(--font-mono);font-size:.9em;padding:2px 6px;border-radius:6px;
  background:var(--c-bg-2);color:var(--c-accent);
}
.article-body pre code{background:none;padding:0;color:inherit}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:32px 0}
.article-body strong{color:var(--c-t1)}

/* 空态 */
.empty{
  max-width:640px;padding:48px 32px;border:1px dashed var(--c-line-strong);
  border-radius:var(--r-lg);background:var(--c-bg-1);text-align:center;
}
.empty__title{font-size:20px;color:var(--c-t1);margin-bottom:10px;font-weight:700}
.empty__desc{font-size:15px;color:var(--c-t2);margin-bottom:24px}

/* ---------- 侧栏 ---------- */
.article-side{display:none}
.side-card{
  border:1px solid var(--c-line);border-radius:var(--r-lg);
  background:var(--c-bg-1);padding:20px;
}
.side-card + .side-card{margin-top:20px}
.side-card__title{
  font-size:12px;letter-spacing:.18em;color:var(--c-t3);margin-bottom:16px;
}
.side-list li + li{border-top:1px solid var(--c-line)}
.side-list a{
  display:flex;align-items:center;gap:12px;padding:12px 0;font-size:14px;color:var(--c-t2);
  transition:color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.side-list a:hover{color:var(--c-t1);padding-left:4px}
.side-list .num{font-family:var(--font-mono);font-size:15px;color:var(--c-brand);min-width:22px}
.side-thumb{border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--c-line);aspect-ratio:16/9;margin-bottom:14px}
.side-thumb img{width:100%;height:100%;object-fit:cover}
.side-card p{font-size:14px;color:var(--c-t2);line-height:1.75}

/* ---------- 相关推荐 ---------- */
.related{margin-top:var(--sp-6);padding-top:var(--sp-5);border-top:1px solid var(--c-line)}
.section-title{
  font-size:22px;line-height:1.4;color:var(--c-t1);margin-bottom:24px;letter-spacing:-.01em;
}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.rel-card{
  display:flex;flex-direction:column;gap:12px;padding:14px;
  border:1px solid var(--c-line);border-radius:var(--r-lg);background:var(--c-bg-1);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(69,224,208,.5)}
.rel-card__pic{aspect-ratio:16/9;border-radius:var(--r-sm);overflow:hidden}
.rel-card__pic img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rel-card:hover .rel-card__pic img{transform:scale(1.04)}
.rel-card__title{font-size:15px;color:var(--c-t1);line-height:1.5}
.rel-card__desc{font-size:13px;color:var(--c-t3);line-height:1.6}

/* ---------- 按钮 ---------- */
.actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:var(--sp-5)}
.btn{
  display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 28px;
  border-radius:var(--r-pill);font-size:15px;font-weight:600;
  transition:filter var(--dur) var(--ease),transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn--primary{background:var(--c-brand);color:#fff}
.btn--primary:hover{filter:brightness(1.08)}
.btn--primary:active{background:var(--c-brand-deep);transform:translateY(1px)}
.btn--ghost{border:1px solid var(--c-line-strong);color:var(--c-t1);background:transparent}
.btn--ghost:hover{border-color:var(--c-accent);color:var(--c-accent)}
.btn .arrow{transition:transform var(--dur) var(--ease)}
.btn:hover .arrow{transform:translateX(3px)}

/* ---------- CTA 横幅 ---------- */
.cta-band{
  position:relative;margin-top:var(--sp-6);border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--c-line);
  background-image:linear-gradient(90deg,rgba(11,12,14,.92),rgba(11,12,14,.55)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  padding:64px 48px;text-align:center;
}
.cta-band h2{font-size:30px;line-height:1.3;color:var(--c-t1);margin-bottom:12px}
.cta-band p{font-size:15px;color:var(--c-t2);max-width:620px;margin:0 auto 28px}
.cta-band .btn{margin:0 auto}

/* ---------- 页脚 ---------- */
.footer{margin-top:var(--sp-7);border-top:1px solid var(--c-line);background:var(--c-bg-1);padding:56px 0 24px}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer__brand{font-size:16px;font-weight:700;color:var(--c-t1);margin-bottom:12px}
.fcol p{font-size:14px;color:var(--c-t2);line-height:1.75}
.fcol h3{font-size:13px;letter-spacing:.14em;color:var(--c-t3);margin-bottom:16px;font-weight:600}
.fcol ul li{margin-bottom:10px}
.fcol ul a{font-size:14px;color:var(--c-t2);transition:color var(--dur) var(--ease)}
.fcol ul a:hover{color:var(--c-t1)}
.footer__bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  margin-top:40px;padding-top:20px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-t3);
}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  .article-side{display:block}
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:56px}
  .article-side__inner{position:sticky;top:48px}
}
@media (min-width:1440px){
  body{padding-left:104px}
  .sidenav{width:104px}
}
@media (max-width:1023px){
  body{padding-left:80px}
  .sidenav{width:80px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{padding-left:0;padding-top:56px}
  .sidenav{display:none}
  .topbar{display:flex}
  .container{padding:0 20px}
  .main{padding:32px 0 56px}
  .article-head h1{font-size:30px}
  .article-body{font-size:16.5px;line-height:1.85}
  .article-body h2{font-size:22px}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .cta-band{padding:48px 24px}
  .cta-band h2{font-size:23px}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .footer{margin-top:64px}
}
@media (max-width:520px){
  .meta{gap:10px}
  .btn{width:100%;justify-content:center;padding:0 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
}

/* roulang page: category1 */
:root{
  --c-bg-0:#0B0C0E;
  --c-bg-1:#121418;
  --c-bg-2:#1A1D23;
  --c-t1:#F2F0EC;
  --c-t2:#A9ADB6;
  --c-t3:#6E737D;
  --c-brand:#FF4D2D;
  --c-brand-deep:#C93A20;
  --c-accent:#45E0D0;
  --c-accent-soft:rgba(69,224,208,.12);
  --c-line:rgba(255,255,255,.08);
  --c-line-strong:rgba(255,255,255,.16);
  --c-shadow:0 20px 60px rgba(0,0,0,.55);

  --fs-h1:48px;
  --fs-h2:32px;
  --fs-h3:22px;
  --fs-body:16px;
  --fs-lead:17px;
  --fs-desc:15px;
  --fs-sm:13px;

  --sp-1:8px;
  --sp-2:12px;
  --sp-3:16px;
  --sp-4:24px;
  --sp-5:32px;
  --sp-6:48px;
  --sp-7:64px;
  --sp-8:96px;

  --r-lg:16px;
  --r-sm:10px;
  --r-pill:999px;

  --ease:cubic-bezier(.2,.7,.2,1);
  --dur:300ms;

  --nav-w:96px;
  --container-max:1376px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg-0);
  color:var(--c-t1);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:var(--fs-body);
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1{font-size:var(--fs-h1);line-height:1.15;letter-spacing:-.02em;font-weight:700}
h2{font-size:var(--fs-h2);line-height:1.3;letter-spacing:-.01em;font-weight:700}
h3{font-size:var(--fs-h3);line-height:1.4;font-weight:600}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}
.mono{font-family:ui-monospace,"SF Mono","Menlo","Consolas",monospace;font-variant-numeric:tabular-nums}

.container{width:100%;max-width:var(--container-max);margin:0 auto;padding-left:var(--sp-6);padding-right:var(--sp-6)}

/* ---------- 左侧导航 ---------- */
.sidenav{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--nav-w);
  display:flex;flex-direction:column;align-items:center;
  gap:var(--sp-4);
  padding:20px 10px 22px;
  background:var(--c-bg-1);
  border-right:1px solid var(--c-line);
  z-index:60;
}
.brandmark{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;width:100%}
.brandmark__dot{
  width:38px;height:38px;flex:0 0 38px;
  display:flex;align-items:center;justify-content:center;
  border-radius:var(--r-pill);
  background:var(--c-brand);
  color:#fff;font-weight:700;font-size:16px;line-height:1;
  box-shadow:0 0 0 1px rgba(255,255,255,.12) inset;
}
.brandmark__text{font-size:12px;font-weight:700;line-height:1.45;letter-spacing:.02em;color:var(--c-t1);width:74px}
.brandmark__sub{font-size:11px;color:var(--c-t3);line-height:1.5}

.sidenav__nav{display:flex;flex-direction:column;gap:6px;width:100%;margin-top:6px}
.navitem{
  position:relative;
  display:flex;flex-direction:column;align-items:center;gap:6px;
  padding:11px 4px;
  border-radius:var(--r-sm);
  color:var(--c-t2);
  font-size:11px;
  line-height:1.4;
  text-align:center;
  transition:background 120ms linear,color 120ms linear;
}
.navitem svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.navitem:hover{background:var(--c-bg-2);color:var(--c-t1)}
.navitem.is-active{color:var(--c-t1);background:var(--c-bg-2)}
.navitem.is-active::before{
  content:"";position:absolute;left:-10px;top:14px;bottom:14px;width:3px;border-radius:0 3px 3px 0;background:var(--c-brand);
}
.sidenav__foot{margin-top:auto;display:flex;flex-direction:column;align-items:center;gap:8px;width:100%;padding-top:16px;border-top:1px solid var(--c-line)}
.sidenav__foot a{font-size:11px;color:var(--c-t3);transition:color 120ms linear}
.sidenav__foot a:hover{color:var(--c-t1)}
.sidenav__social{display:flex;gap:8px}
.sidenav__social span{width:8px;height:8px;border-radius:var(--r-pill);background:var(--c-line-strong);display:block}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:56px;
  align-items:center;justify-content:space-between;
  padding:0 20px;background:rgba(18,20,24,.96);
  border-bottom:1px solid var(--c-line);z-index:80;
}
.topbar__brand{font-size:14px;font-weight:700;letter-spacing:.01em}
.burger{width:40px;height:40px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:var(--r-sm)}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-t1);transition:transform 200ms var(--ease),opacity 160ms linear}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.scrim{position:fixed;inset:0;background:rgba(0,0,0,.4);opacity:0;pointer-events:none;transition:opacity 200ms linear;z-index:85}
.scrim.is-on{opacity:1;pointer-events:auto}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:340px;
  background:var(--c-bg-1);border-left:1px solid var(--c-line);
  padding:24px 20px 32px;
  transform:translateX(102%);transition:transform 260ms var(--ease);
  z-index:90;overflow-y:auto;
}
.drawer.is-open{transform:none}
.drawer__title{font-size:13px;color:var(--c-t3);letter-spacing:.14em;margin-bottom:14px}
.drawer__nav{display:flex;flex-direction:column;gap:4px;margin-bottom:24px}
.drawer__nav a{
  display:flex;align-items:center;gap:12px;
  padding:13px 14px;border-radius:var(--r-sm);
  color:var(--c-t2);font-size:15px;transition:background 120ms linear,color 120ms linear;
}
.drawer__nav a:hover{background:var(--c-bg-2);color:var(--c-t1)}
.drawer__nav a.is-active{background:var(--c-bg-2);color:var(--c-t1);box-shadow:inset 3px 0 0 var(--c-brand)}
.drawer__nav svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:0 0 18px}
.drawer__foot{border-top:1px solid var(--c-line);padding-top:18px;display:flex;flex-direction:column;gap:10px}
.drawer__foot a{font-size:14px;color:var(--c-t3)}
.drawer__foot a:hover{color:var(--c-t1)}

/* ---------- 页面骨架 ---------- */
.page{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column}
main{flex:1}

/* ---------- 页头 ---------- */
.pagehead{position:relative;min-height:240px;display:flex;align-items:flex-end;overflow:hidden;border-bottom:1px solid var(--c-line)}
.pagehead__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5}
.pagehead__mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,12,14,.55) 0%,rgba(11,12,14,.94) 78%,var(--c-bg-0) 100%)}
.pagehead__inner{position:relative;z-index:2;padding-top:76px;padding-bottom:30px}
.crumbs{display:flex;align-items:center;gap:8px;font-size:var(--fs-sm);color:var(--c-t3);margin-bottom:14px;flex-wrap:wrap}
.crumbs a{color:var(--c-t2);transition:color 120ms linear}
.crumbs a:hover{color:var(--c-t1)}
.crumbs span[aria-current]{color:var(--c-t3)}
.crumbs i{font-style:normal;color:var(--c-t3);opacity:.6}
.pagehead h1{max-width:860px;margin-bottom:12px}
.pagehead__lead{max-width:640px;color:var(--c-t2);font-size:var(--fs-lead);line-height:1.7}
.pagehead__tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}

/* ---------- 通用标签、按钮 ---------- */
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-accent-soft);color:var(--c-accent);
  font-size:12px;line-height:1.6;white-space:nowrap;
}
.tag--brand{background:var(--c-brand);color:#fff}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  transition:background 200ms var(--ease),color 200ms var(--ease),border-color 200ms var(--ease),transform 200ms var(--ease),filter 950ms var(--ease);
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform 200ms var(--ease)}
.btn--primary{background:var(--c-brand);color:#fff}
.btn--primary:hover{filter:brightness(1.08)}
.btn--primary:hover svg{transform:translateX(3px)}
.btn--primary:active{background:var(--c-brand-deep)}
.btn--ghost{border:1px solid var(--c-line-strong);color:var(--c-t1);background:transparent}
.btn--ghost:hover{border-color:var(--c-accent);color:var(--c-accent)}
.btn--ghost:hover svg{transform:translateX(3px)}
.btn[disabled],.btn.is-disabled{opacity:.4;pointer-events:none}

/* ---------- 筛选条 ---------- */
.filterbar{position:sticky;top:0;z-index:40;background:rgba(11,12,14,.92);border-bottom:1px solid var(--c-line);backdrop-filter:blur(8px)}
.filterbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:16px;padding-bottom:16px;flex-wrap:wrap}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  padding:8px 16px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);color:var(--c-t2);font-size:14px;
  transition:background 140ms linear,color 140ms linear,border-color 140ms linear;
}
.chip:hover{background:var(--c-bg-2);color:var(--c-t1);border-color:var(--c-line-strong)}
.chip.is-on{background:var(--c-brand);border-color:var(--c-brand);color:#fff;font-weight:600}
.filterbar__count{font-size:var(--fs-sm);color:var(--c-t3)}

/* ---------- 板块通用 ---------- */
.section{padding-top:var(--sp-8);padding-bottom:0}
.section:last-of-type{padding-bottom:var(--sp-8)}
.shead{max-width:760px;margin-bottom:var(--sp-6)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:var(--fs-sm);color:var(--c-t3);letter-spacing:.18em;margin-bottom:12px;
}
.eyebrow::before,.eyebrow::after{content:"";display:block;width:18px;height:1px;background:var(--c-line-strong)}
.shead__title{margin-bottom:12px}
.shead__lead{color:var(--c-t2);font-size:var(--fs-lead);line-height:1.7}

/* ---------- 网格卡片 ---------- */
.gridcards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--sp-4)}
.gcard{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:var(--r-lg);
  transition:transform var(--dur) var(--ease),border-color 160ms linear;
}
.gcard:hover{transform:translateY(-4px);border-color:var(--c-line-strong)}
.gcard__media{position:relative;display:block;aspect-ratio:3/4;overflow:hidden;background:var(--c-bg-1)}
.gcard__media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms var(--ease)}
.gcard:hover .gcard__media img{transform:scale(1.04)}
.gcard__badge{position:absolute;left:12px;top:12px;z-index:2}
.gcard__body{display:flex;flex-direction:column;gap:10px;padding:18px 18px 20px}
.gcard__title{font-size:18px;line-height:1.5;font-weight:600}
.gcard__title a{transition:color 140ms linear}
.gcard__title a:hover{color:var(--c-accent)}
.gcard__desc{
  color:var(--c-t2);font-size:var(--fs-desc);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.gcard__meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:var(--fs-sm);color:var(--c-t3);margin-top:2px}
.gcard__more{color:var(--c-accent);font-size:var(--fs-sm);display:inline-flex;align-items:center;gap:6px}
.gcard__more::after{content:"→";transition:transform 200ms var(--ease)}
.gcard:hover .gcard__more::after{transform:translateX(3px)}

/* ---------- 适用情形 ---------- */
.scenlist{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1px;background:var(--c-line);border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;
}
.scen{display:flex;gap:20px;padding:28px;background:var(--c-bg-1);transition:background 160ms linear}
.scen:hover{background:var(--c-bg-2)}
.scen__no{font-size:30px;line-height:1;color:var(--c-t3);flex:0 0 auto;transition:color 160ms linear}
.scen:hover .scen__no{color:var(--c-brand)}
.scen h3{font-size:18px;margin-bottom:8px}
.scen p{color:var(--c-t2);font-size:var(--fs-desc);line-height:1.75}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--sp-4)}
.step{border-top:1px solid var(--c-line-strong);padding-top:20px}
.step__no{display:block;font-size:28px;line-height:1;color:var(--c-brand);margin-bottom:14px;letter-spacing:.04em}
.step h3{font-size:18px;margin-bottom:8px}
.step p{color:var(--c-t2);font-size:var(--fs-desc);line-height:1.75}

/* ---------- FAQ ---------- */
.faq{max-width:860px}
.faq__item{border-bottom:1px solid var(--c-line)}
.faq__item:first-child{border-top:1px solid var(--c-line)}
.faq__q{
  width:100%;min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px 4px 18px 0;text-align:left;font-size:17px;color:var(--c-t1);
  transition:color 140ms linear;
}
.faq__q:hover{color:var(--c-accent)}
.faq__icon{position:relative;width:14px;height:14px;flex:0 0 14px}
.faq__icon::before,.faq__icon::after{content:"";position:absolute;background:var(--c-brand);border-radius:2px;transition:transform 200ms var(--ease),opacity 200ms linear}
.faq__icon::before{top:6px;left:0;width:14px;height:2px}
.faq__icon::after{left:6px;top:0;width:2px;height:14px}
.faq__q[aria-expanded="true"] .faq__icon::after{transform:rotate(45deg);opacity:0}
.faq__a{overflow:hidden;max-height:0;transition:max-height 200ms var(--ease)}
.faq__a p{padding:0 4px 24px 0;max-width:680px;color:var(--c-t2);font-size:15px;line-height:1.8}

/* ---------- CTA ---------- */
.cta{position:relative;overflow:hidden;margin-top:var(--sp-8);border-top:1px solid var(--c-line)}
.cta__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.cta__mask{position:absolute;inset:0;background:radial-gradient(120% 120% at 50% 0%,rgba(11,12,14,.55) 0%,rgba(11,12,14,.96) 62%,var(--c-bg-0) 100%)}
.cta__inner{position:relative;z-index:2;max-width:720px;margin:0 auto;text-align:center;padding:var(--sp-8) var(--sp-6)}
.cta h2{margin-bottom:14px}
.cta p{color:var(--c-t2);font-size:var(--fs-lead);line-height:1.7;margin-bottom:28px}
.cta__actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.footer{border-top:1px solid var(--c-line);background:var(--c-bg-1);margin-top:0}
.footer .container{padding-top:var(--sp-7);padding-bottom:0}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:var(--sp-6)}
.footer__brand{font-size:16px;font-weight:700;margin-bottom:12px}
.fcol p{color:var(--c-t2);font-size:14px;line-height:1.8}
.fcol h3{font-size:14px;color:var(--c-t1);margin-bottom:16px;font-weight:600}
.fcol ul{display:flex;flex-direction:column;gap:10px}
.fcol a{color:var(--c-t2);font-size:14px;transition:color 120ms linear}
.fcol a:hover{color:var(--c-t1)}
.fcol .mono{color:var(--c-t3);font-size:13px}
.footer__bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--c-line);padding:20px 0 28px;
  font-size:var(--fs-sm);color:var(--c-t3);
}

/* ---------- 动效 ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease)}
.js .reveal.is-in{opacity:1;transform:none}
.gridcards .reveal:nth-child(2){transition-delay:60ms}
.gridcards .reveal:nth-child(3){transition-delay:120ms}
.gridcards .reveal:nth-child(4){transition-delay:180ms}
.gridcards .reveal:nth-child(5){transition-delay:60ms}
.gridcards .reveal:nth-child(6){transition-delay:120ms}
.gridcards .reveal:nth-child(7){transition-delay:180ms}
.gridcards .reveal:nth-child(8){transition-delay:240ms}

/* ---------- 骨架屏 ---------- */
.is-loading{position:relative;overflow:hidden;background:var(--c-bg-2)}
.is-loading::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.06),transparent);
  animation:shine 1.4s infinite;
}
@keyframes shine{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}

/* ---------- 空态 ---------- */
.empty{padding:var(--sp-7) var(--sp-4);text-align:center;border:1px dashed var(--c-line-strong);border-radius:var(--r-lg);background:var(--c-bg-1)}
.empty__mark{width:52px;height:52px;margin:0 auto 18px;border-radius:var(--r-pill);border:1px solid var(--c-line-strong);display:flex;align-items:center;justify-content:center;color:var(--c-t3);font-size:20px}
.empty p{color:var(--c-t2);font-size:14px;margin-bottom:18px}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .gridcards{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1150px){
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:1023px){
  :root{--nav-w:80px;--fs-h1:38px}
  .container{padding-left:32px;padding-right:32px}
  .gridcards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .brandmark__text{width:62px;font-size:11px}
}
@media (max-width:767px){
  :root{--fs-h1:30px;--fs-h2:24px;--fs-h3:19px}
  .sidenav{display:none}
  .topbar{display:flex}
  .page{margin-left:0;padding-top:56px}
  .container{padding-left:20px;padding-right:20px}
  .pagehead{min-height:220px}
  .pagehead__inner{padding-top:36px;padding-bottom:24px}
  .filterbar{position:static}
  .section{padding-top:var(--sp-7)}
  .cta{margin-top:var(--sp-7)}
  .cta__inner{padding:var(--sp-7) 20px}
  .gridcards{grid-template-columns:1fr}
  .scenlist{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .gcard__title{font-size:17px}
  .filterbar__inner{flex-direction:column;align-items:flex-start}
  .cta__actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .js .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --c-bg-0:#0B0C0E;
  --c-bg-1:#121418;
  --c-bg-2:#1A1D23;
  --c-t1:#F2F0EC;
  --c-t2:#A9ADB6;
  --c-t3:#6E737D;
  --c-brand:#FF4D2D;
  --c-brand-deep:#C93A20;
  --c-accent:#45E0D0;
  --c-accent-soft:rgba(69,224,208,.12);
  --c-line:rgba(255,255,255,.08);
  --c-line-2:rgba(255,255,255,.16);
  --fs-h1:48px;
  --fs-h2:32px;
  --fs-h3:22px;
  --fs-body:16px;
  --fs-sm:15px;
  --fs-xs:13px;
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:40px;
  --sp-5:64px;
  --sp-6:96px;
  --sp-7:120px;
  --r-lg:16px;
  --r-sm:10px;
  --r-pill:999px;
  --dur-1:.2s;
  --dur-2:.3s;
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-w:96px;
  --shadow-pop:0 20px 60px rgba(0,0,0,.55);
  --font-mono:ui-monospace,"SF Mono","Menlo",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg-0);
  color:var(--c-t1);
  font-family:system-ui,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:var(--fs-body);
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;transition:color var(--dur-1) var(--ease);}
ul,ol{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4,p{margin:0;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
.mono{font-family:var(--font-mono);letter-spacing:.02em;}
.container{max-width:1280px;margin:0 auto;padding:0 48px;}
.page{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column;}

/* ---------- 左侧竖向导航 ---------- */
.sidenav{
  position:fixed;top:0;left:0;bottom:0;width:var(--nav-w);
  background:#0D0F12;
  border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;
  z-index:40;
}
.brand{
  display:flex;flex-direction:column;align-items:center;gap:10px;
  padding:20px 8px 18px;
  border-bottom:1px solid var(--c-line);
}
.brand__mark{
  width:38px;height:38px;border-radius:var(--r-sm);
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--c-brand),var(--c-brand-deep));
  color:#fff;font-size:18px;font-weight:700;line-height:1;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.14);
}
.brand__name{
  font-size:12px;font-weight:700;line-height:1.35;text-align:center;
  color:var(--c-t1);letter-spacing:.02em;
}
.sidenav__nav{
  display:flex;flex-direction:column;
  padding:12px 6px;gap:4px;flex:1;
}
.navitem{
  position:relative;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  height:62px;border-radius:var(--r-sm);
  color:var(--c-t2);font-size:11px;line-height:1.3;text-align:center;
  transition:background var(--dur-1) var(--ease),color var(--dur-1) var(--ease);
}
.navitem svg{
  width:20px;height:20px;fill:none;stroke:currentColor;
  stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;
}
.navitem:hover{background:var(--c-bg-2);color:var(--c-t1);}
.navitem.is-active{
  background:var(--c-bg-2);color:var(--c-t1);font-weight:600;
}
.navitem.is-active::before{
  content:"";position:absolute;left:-6px;top:50%;
  transform:translateY(-50%);
  width:3px;height:26px;border-radius:0 3px 3px 0;
  background:var(--c-brand);
  transition:transform var(--dur-2) var(--ease);
}
.sidenav__foot{
  padding:16px 8px 20px;border-top:1px solid var(--c-line);
  display:flex;flex-direction:column;align-items:center;gap:8px;
}
.sidenav__foot a{font-size:11px;color:var(--c-t3);}
.sidenav__foot a:hover{color:var(--c-accent);}
.sidenav__foot .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);opacity:.7;}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{display:none;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;
  background:var(--c-bg-1);border-left:1px solid var(--c-line);
  transform:translateX(102%);transition:transform var(--dur-2) var(--ease);
  z-index:60;display:flex;flex-direction:column;padding:20px 20px 28px;
  box-shadow:var(--shadow-pop);
}
.drawer.is-open{transform:none;}
.drawer__head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:16px;border-bottom:1px solid var(--c-line);
}
.drawer__head strong{font-size:14px;}
.drawer__close{
  width:34px;height:34px;border-radius:var(--r-sm);border:1px solid var(--c-line-2);
  display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;color:var(--c-t2);
}
.drawer__close:hover{color:var(--c-t1);border-color:var(--c-accent);}
.drawer__nav{display:flex;flex-direction:column;gap:6px;margin-top:18px;flex:1;}
.drawer__nav a{
  display:flex;align-items:center;gap:12px;
  padding:14px 14px;border-radius:var(--r-sm);
  color:var(--c-t2);font-size:15px;border:1px solid transparent;
}
.drawer__nav a svg{
  width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;
  stroke-linecap:round;stroke-linejoin:round;flex:none;
}
.drawer__nav a:hover{background:var(--c-bg-2);color:var(--c-t1);}
.drawer__nav a.is-active{
  background:var(--c-bg-2);color:var(--c-t1);border-color:var(--c-line-2);font-weight:600;
}
.drawer__meta{font-size:12px;color:var(--c-t3);padding-top:16px;border-top:1px solid var(--c-line);}
.scrim{
  position:fixed;inset:0;background:rgba(0,0,0,.4);
  opacity:0;pointer-events:none;transition:opacity var(--dur-2) var(--ease);z-index:55;
}
.scrim.is-open{opacity:1;pointer-events:auto;}
body.is-locked{overflow:hidden;}

/* ---------- 页头 ---------- */
.pagehero{
  position:relative;height:180px;overflow:hidden;
  border-bottom:1px solid var(--c-line);background:var(--c-bg-1);
}
.pagehero img{width:100%;height:100%;object-fit:cover;opacity:.5;}
.pagehero__veil{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,12,14,.94) 0%,rgba(11,12,14,.6) 55%,rgba(11,12,14,.92) 100%);
}
.pagehero__grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(90deg,transparent,#000 30%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 30%,transparent);
}
.pagehead{padding:var(--sp-5) 0 var(--sp-4);}
.crumbs{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:var(--fs-xs);color:var(--c-t3);margin-bottom:22px;
}
.crumbs a{color:var(--c-t3);}
.crumbs a:hover{color:var(--c-accent);}
.crumbs .sep{opacity:.5;}
.crumbs .now{color:var(--c-t2);}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:var(--fs-xs);letter-spacing:.18em;color:var(--c-t3);
  margin-bottom:14px;
}
.eyebrow::before,.eyebrow::after{
  content:"";width:18px;height:1px;background:var(--c-line-2);
}
.pagehead h1{
  font-size:clamp(30px,4.2vw,var(--fs-h1));
  line-height:1.15;letter-spacing:-.02em;font-weight:700;
  max-width:900px;
}
.lede{
  margin-top:18px;max-width:720px;color:var(--c-t2);
  font-size:var(--fs-sm);line-height:1.7;
}
.pagehead__tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}

/* ---------- 标签与徽章 ---------- */
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:12px;line-height:1.6;
  background:var(--c-accent-soft);color:var(--c-accent);
  white-space:nowrap;
}
.badge-hot{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-brand);color:#fff;font-size:12px;font-weight:600;line-height:1.6;
}
.badge-soft{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  border:1px solid var(--c-line-2);color:var(--c-t2);font-size:12px;line-height:1.6;
}

/* ---------- 筛选条 ---------- */
.filterbar{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  padding:20px 0;border-bottom:1px solid var(--c-line);
}
.chip{
  display:inline-flex;align-items:center;
  height:34px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);color:var(--c-t2);
  font-size:13px;line-height:1;cursor:pointer;
  transition:color var(--dur-1) var(--ease),border-color var(--dur-1) var(--ease),background var(--dur-1) var(--ease);
}
.chip:hover{color:var(--c-t1);border-color:var(--c-line-2);background:var(--c-bg-2);}
.chip.is-on{
  background:var(--c-brand);border-color:var(--c-brand);color:#fff;font-weight:600;
}
.filterbar__hint{margin-left:auto;font-size:12px;color:var(--c-t3);}

/* ---------- 板块通用 ---------- */
.sec{padding:var(--sp-6) 0;}
.sec--tight{padding:var(--sp-5) 0;}
.sec__head{margin-bottom:var(--sp-3);}
.sec__title{
  font-size:clamp(24px,3vw,var(--fs-h2));
  line-height:1.3;letter-spacing:-.01em;font-weight:700;
}
.sec__desc{margin-top:12px;color:var(--c-t2);font-size:var(--fs-sm);max-width:700px;}

/* ---------- 排行纵向列表 ---------- */
.ranklist{
  border-top:1px solid var(--c-line);
}
.rank{
  display:grid;
  grid-template-columns:56px 200px minmax(0,1fr) 44px;
  gap:var(--sp-3);
  align-items:center;
  padding:20px 16px;
  border-bottom:1px solid var(--c-line);
  transition:background var(--dur-1) var(--ease),transform var(--dur-1) var(--ease);
}
.rank:hover{background:var(--c-bg-1);}
.rank__num{
  font-family:var(--font-mono);
  font-size:34px;line-height:1;font-weight:700;
  color:rgba(255,255,255,.14);
  transition:color var(--dur-1) var(--ease);
}
.rank:hover .rank__num{color:var(--c-brand);}
.rank__thumb{
  width:200px;aspect-ratio:16/9;border-radius:var(--r-sm);
  overflow:hidden;background:var(--c-bg-2);
  box-shadow:inset 0 0 0 1px var(--c-line);
}
.rank__thumb img{
  width:100%;height:100%;object-fit:cover;
  transition:transform var(--dur-2) var(--ease);
}
.rank:hover .rank__thumb img{transform:scale(1.04);}
.rank__body{min-width:0;}
.rank__top{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:8px;}
.rank__title{
  font-size:18px;line-height:1.5;font-weight:600;color:var(--c-t1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rank__desc{
  margin-top:8px;color:var(--c-t2);font-size:var(--fs-sm);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rank__meta{
  margin-top:12px;display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  font-size:var(--fs-xs);color:var(--c-t3);
}
.rank__arrow{
  width:40px;height:40px;border-radius:50%;
  border:1px solid var(--c-line);color:var(--c-t2);
  display:flex;align-items:center;justify-content:center;
  transition:border-color var(--dur-1) var(--ease),color var(--dur-1) var(--ease),transform var(--dur-1) var(--ease);
}
.rank__arrow svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.rank:hover .rank__arrow{border-color:var(--c-accent);color:var(--c-accent);transform:translateX(4px);}

/* ---------- 分页 ---------- */
.pager{
  display:flex;justify-content:center;align-items:center;gap:8px;
  margin-top:var(--sp-4);flex-wrap:wrap;
}
.pager a,.pager span{
  min-width:42px;height:42px;padding:0 14px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--r-sm);border:1px solid var(--c-line);
  color:var(--c-t2);font-size:14px;
  transition:background var(--dur-1) var(--ease),color var(--dur-1) var(--ease),border-color var(--dur-1) var(--ease);
}
.pager a:hover{color:var(--c-t1);border-color:var(--c-line-2);background:var(--c-bg-2);}
.pager .is-current{
  background:var(--c-brand);border-color:var(--c-brand);color:#fff;font-weight:600;
}
.pager .is-disabled{opacity:.4;pointer-events:none;}

/* ---------- 数据带 ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);
  gap:1px;background:var(--c-line);
  border:1px solid var(--c-line);border-radius:var(--r-lg);
  overflow:hidden;
}
.stat{
  background:var(--c-bg-1);padding:28px 24px;
}
.stat__num{
  font-family:var(--font-mono);font-size:28px;line-height:1.2;font-weight:700;
  color:var(--c-t1);
}
.stat__num small{font-size:14px;color:var(--c-t3);margin-left:4px;font-weight:400;}
.stat__label{margin-top:8px;font-size:var(--fs-xs);color:var(--c-t3);letter-spacing:.06em;}

/* ---------- 说明双栏 ---------- */
.duo{
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:var(--sp-3);
}
.card{
  background:var(--c-bg-1);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:32px;
}
.card h3{font-size:var(--fs-h3);line-height:1.4;font-weight:600;margin-bottom:14px;}
.card p{color:var(--c-t2);font-size:var(--fs-sm);}
.checklist{margin-top:20px;display:flex;flex-direction:column;gap:14px;}
.checklist li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--c-t2);line-height:1.7;
}
.checklist li::before{
  content:"";flex:none;width:6px;height:6px;margin-top:11px;border-radius:50%;
  background:var(--c-accent);
}
.card--accent{
  background:
    radial-gradient(120% 100% at 100% 0%,rgba(69,224,208,.14),transparent 60%),
    var(--c-bg-1);
}
.card--accent .pill{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-accent-soft);color:var(--c-accent);font-size:12px;margin-bottom:16px;
}

/* ---------- FAQ ---------- */
.faq{max-width:860px;border-top:1px solid var(--c-line);}
.faq__item{border-bottom:1px solid var(--c-line);}
.faq__q{
  width:100%;min-height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:16px 4px;text-align:left;
  font-size:16px;line-height:1.6;color:var(--c-t1);
  transition:color var(--dur-1) var(--ease);
}
.faq__q:hover{color:var(--c-accent);}
.faq__icon{
  position:relative;flex:none;width:14px;height:14px;
  transition:transform var(--dur-2) var(--ease);
}
.faq__icon::before,.faq__icon::after{
  content:"";position:absolute;left:0;top:50%;width:14px;height:1.6px;
  background:currentColor;transform:translateY(-50%);
}
.faq__icon::after{transform:translateY(-50%) rotate(90deg);}
.faq__item.is-open .faq__icon{transform:rotate(45deg);}
.faq__a{
  max-height:0;overflow:hidden;
  transition:max-height var(--dur-2) var(--ease);
}
.faq__a-inner{
  padding:0 4px 24px;max-width:680px;
  color:var(--c-t2);font-size:var(--fs-sm);line-height:1.8;
}

/* ---------- CTA ---------- */
.cta{
  position:relative;margin-top:var(--sp-6);
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  overflow:hidden;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
}
.cta::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,12,14,.86),rgba(11,12,14,.95));
}
.cta__inner{position:relative;padding:88px 0;text-align:center;}
.cta__title{
  font-size:clamp(24px,3.2vw,34px);line-height:1.3;letter-spacing:-.01em;font-weight:700;
  max-width:760px;margin:0 auto;
}
.cta__desc{margin:18px auto 0;max-width:620px;color:var(--c-t2);font-size:var(--fs-sm);}
.cta__actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 28px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  transition:background var(--dur-1) var(--ease),color var(--dur-1) var(--ease),
             border-color var(--dur-1) var(--ease),transform var(--dur-1) var(--ease),filter var(--dur-1) var(--ease);
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--dur-2) var(--ease);}
.btn:hover svg{transform:translateX(3px);}
.btn--primary{background:var(--c-brand);color:#fff;border:1px solid var(--c-brand);}
.btn--primary:hover{filter:brightness(1.08);}
.btn--primary:active{background:var(--c-brand-deep);border-color:var(--c-brand-deep);}
.btn--ghost{background:transparent;color:var(--c-t1);border:1px solid var(--c-line-2);}
.btn--ghost:hover{border-color:var(--c-accent);color:var(--c-accent);}
.btn[disabled]{opacity:.4;pointer-events:none;}

/* ---------- 页脚 ---------- */
.footer{
  margin-top:auto;border-top:1px solid var(--c-line);background:var(--c-bg-1);
}
.footer__grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;padding:var(--sp-5) 0 var(--sp-4);
}
.footer__brand{
  font-size:16px;font-weight:700;color:var(--c-t1);margin-bottom:12px;
}
.fcol p{color:var(--c-t3);font-size:14px;line-height:1.8;}
.fcol h3{
  font-size:14px;font-weight:600;color:var(--c-t1);margin-bottom:16px;letter-spacing:.04em;
}
.fcol ul{display:flex;flex-direction:column;gap:10px;}
.fcol a{font-size:14px;color:var(--c-t2);}
.fcol a:hover{color:var(--c-t1);}
.fcol .mono{font-size:13px;color:var(--c-t3);}
.footer__bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:20px 0 28px;border-top:1px solid var(--c-line);
  font-size:var(--fs-xs);color:var(--c-t3);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity var(--dur-2) var(--ease),transform var(--dur-2) var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  :root{--nav-w:96px;}
  .container{padding:0 40px;}
}
@media (max-width:1023px){
  :root{--nav-w:80px;}
  .container{padding:0 32px;}
  .sec{padding:88px 0;}
  .rank{grid-template-columns:40px 160px minmax(0,1fr);}
  .rank__thumb{width:160px;}
  .rank__arrow{display:none;}
  .rank__num{font-size:28px;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .duo{grid-template-columns:1fr;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .sidenav{display:none;}
  .page{margin-left:0;padding-top:56px;}
  .container{padding:0 20px;}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:56px;padding:0 16px;
    background:rgba(11,12,14,.94);backdrop-filter:blur(6px);
    border-bottom:1px solid var(--c-line);z-index:50;
  }
  .topbar__brand{
    display:flex;align-items:center;gap:10px;font-size:14px;font-weight:700;color:var(--c-t1);
  }
  .topbar__brand .mark{
    width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;
    background:linear-gradient(140deg,var(--c-brand),var(--c-brand-deep));color:#fff;font-size:13px;
  }
  .burger{
    width:38px;height:38px;border-radius:var(--r-sm);border:1px solid var(--c-line-2);
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  }
  .burger span{display:block;width:16px;height:1.6px;background:var(--c-t1);border-radius:2px;}
  .pagehero{height:140px;}
  .pagehead{padding:40px 0 28px;}
  .rank{grid-template-columns:1fr;gap:16px;padding:20px 4px;}
  .rank__num{font-size:22px;}
  .rank__thumb{width:100%;}
  .rank__desc{-webkit-line-clamp:3;}
  .stats{grid-template-columns:1fr;}
  .sec{padding:64px 0;}
  .cta__inner{padding:64px 0;}
  .footer__grid{grid-template-columns:1fr;gap:28px;padding:48px 0 32px;}
  .pager a,.pager span{min-width:38px;height:38px;padding:0 12px;}
}
@media (max-width:520px){
  .pagehead h1{font-size:26px;}
  .card{padding:22px;}
  .cta__actions .btn{width:100%;}
  .filterbar__hint{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}