/* roulang page: index */
/* ============ 设计令牌 ============ */
:root{
  --brand-1:#FF5A2B;
  --brand-2:#FFB020;
  --brand-deep:#E23A12;
  --accent:#14C8B8;
  --accent-deep:#0E9E92;
  --ink:#1B1230;
  --ink-2:#4A4160;
  --ink-3:#8A83A0;
  --line:#F0E4DC;
  --surface:#FFFFFF;
  --surface-2:#FFF1E8;
  --bg:#FFF7F2;
  --success:#1FA971;
  --warn:#F0902A;
  --error:#E04A3F;
  --grad:linear-gradient(135deg,#FF5A2B 0%,#FFB020 100%);
  --grad-soft:linear-gradient(135deg,rgba(255,90,43,.12) 0%,rgba(255,176,32,.12) 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(27,18,48,.06);
  --sh-2:0 12px 32px -8px rgba(226,58,18,.18);
  --sh-3:0 20px 44px -12px rgba(27,18,48,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:68px;
  --sec-pad:72px;
  --gutter:24px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"DIN Alternate","Barlow",ui-monospace,SFMono-Regular,Menlo,monospace;
}
/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 16px)}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s var(--ease),background-color .2s var(--ease)}
a:hover{color:var(--brand-1)}
button,input,select,textarea{font:inherit;color:inherit;margin:0}
button{cursor:pointer;background:none;border:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(255,90,43,.18)}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}
/* ============ 容器与通用 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--gutter)}
.section{padding:var(--sec-pad) 0}
.section--tight{padding:48px 0}
.section--line{border-top:1px solid var(--line)}
.section--soft{background:linear-gradient(180deg,#FFFDFB 0%,var(--surface-2) 100%)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.sec-head__left{max-width:720px}
.sec-title{position:relative;font-size:30px;line-height:1.3;font-weight:700;color:var(--ink);letter-spacing:-.01em;padding-left:16px}
.sec-title::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:5px;border-radius:4px;background:var(--grad)}
.sec-desc{margin-top:10px;font-size:15px;color:var(--ink-3);line-height:1.8}
.sec-more{font-size:14px;font-weight:600;color:var(--brand-deep);border-bottom:1px solid rgba(226,58,18,.35);padding-bottom:2px}
.sec-more:hover{border-color:var(--brand-deep);color:var(--brand-1)}
.muted{color:var(--ink-3)}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn--primary{background:var(--grad);color:#fff;box-shadow:var(--sh-2)}
.btn--primary:hover{transform:translateY(-1px);filter:brightness(1.05);box-shadow:0 16px 34px -10px rgba(226,58,18,.38);color:#fff}
.btn--primary:active{transform:translateY(0);filter:brightness(.98)}
.btn--ghost{background:var(--surface);border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--brand-1);color:var(--brand-deep);transform:translateY(-1px)}
.btn--soft{background:var(--surface-2);color:var(--brand-deep)}
.btn--soft:hover{background:#FFE6D8;color:var(--brand-deep)}
.btn--sm{height:38px;padding:0 18px;font-size:14px}
.btn--block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.btn.is-loading{color:transparent;position:relative}
.btn.is-loading::after{
  content:"";position:absolute;width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.5);border-top-color:#fff;animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand-deep)}
.link-arrow::after{content:"→";transition:transform .2s var(--ease)}
.link-arrow:hover::after{transform:translateX(3px)}
/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;line-height:1.6;
}
.badge--data{background:var(--surface-2);color:var(--brand-deep);border:1px solid rgba(255,90,43,.2)}
.badge--tag{background:rgba(20,200,184,.1);color:var(--accent-deep)}
.badge--tag--brand{background:rgba(255,90,43,.1);color:var(--brand-deep)}
.badge--tag--ink{background:rgba(74,65,96,.1);color:var(--ink-2)}
.badge--tag--ok{background:rgba(31,169,113,.12);color:#148C5C}
.pill-status{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(31,169,113,.1);color:#148C5C;
  font-size:13px;font-weight:600;
}
.pill-status i{width:7px;height:7px;border-radius:50%;background:var(--success);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(31,169,113,.5)}50%{box-shadow:0 0 0 6px rgba(31,169,113,0)}}
/* ============ 命令栏导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,247,242,.86);
  border-bottom:1px solid transparent;
  transition:background-color .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.nav{display:flex;align-items:center;gap:20px;height:var(--nav-h)}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand__mark{
  width:36px;height:36px;border-radius:12px;background:var(--grad);
  display:grid;place-items:center;color:#fff;font-size:17px;font-weight:800;box-shadow:var(--sh-2)
}
.brand__text{font-size:17px;font-weight:700;letter-spacing:-.01em;white-space:nowrap}
.nav__menu{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1}
.nav__link{
  position:relative;padding:8px 12px;border-radius:var(--r-pill);
  font-size:14px;font-weight:500;color:var(--ink-2);white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease)
}
.nav__link:hover{color:var(--brand-deep);background:rgba(255,90,43,.08)}
.nav__link.is-active{color:var(--ink);font-weight:700}
.nav__link.is-active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:1px;
  width:60%;height:2px;border-radius:2px;background:var(--grad)
}
.nav__tools{display:flex;align-items:center;gap:10px;flex-shrink:0}
.search{
  display:flex;align-items:center;gap:8px;width:240px;height:40px;padding:0 12px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-pill);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease)
}
.search:focus-within{border-color:var(--brand-1);box-shadow:0 0 0 4px rgba(255,90,43,.12)}
.search svg{flex-shrink:0;color:var(--ink-3)}
.search input{flex:1;min-width:0;border:0;outline:0;background:transparent;font-size:14px}
.search input::placeholder{color:var(--ink-3)}
.search kbd{
  font-family:var(--font-num);font-size:11px;color:var(--ink-3);
  border:1px solid var(--line);border-radius:6px;padding:1px 5px;background:var(--bg)
}
.icon-btn{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
  color:var(--ink-2);background:transparent;border:1px solid transparent;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease)
}
.icon-btn:hover{background:rgba(255,90,43,.1);color:var(--brand-deep)}
.icon-btn:active{transform:scale(.94)}
.nav__hamburger{display:none}
.drawer-mask{
  position:fixed;inset:0;background:rgba(27,18,48,.5);opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s var(--ease);z-index:70
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:86vw;max-width:340px;z-index:80;
  background:var(--surface);box-shadow:-18px 0 44px -18px rgba(27,18,48,.35);
  transform:translateX(102%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;overscroll-behavior:contain
}
.drawer.is-open{transform:translateX(0)}
.drawer__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer__nav{display:flex;flex-direction:column;gap:4px;margin-bottom:20px}
.drawer__nav a{padding:12px 14px;border-radius:var(--r-md);font-size:15px;font-weight:600;color:var(--ink)}
.drawer__nav a:hover{background:var(--surface-2);color:var(--brand-deep)}
.drawer__nav a.is-active{background:var(--surface-2);color:var(--brand-deep)}
.drawer__search{width:100%;margin-bottom:16px}
/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:64px 0 76px;background:var(--bg)}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(27,18,48,.07) 1px,transparent 1px);
  background-size:22px 22px;opacity:.55;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 84%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 84%);
}
.hero::after{
  content:"";position:absolute;width:560px;height:560px;right:-160px;top:-200px;pointer-events:none;
  background:radial-gradient(circle,rgba(255,90,43,.2),rgba(255,176,32,0) 68%);
}
.hero__inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero__copy{max-width:620px}
.hero h1{
  margin-top:18px;font-size:40px;line-height:1.24;font-weight:800;color:var(--ink);letter-spacing:-.01em
}
.hero__sub{margin-top:16px;font-size:17px;line-height:1.8;color:var(--ink-2)}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero__stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:32px}
.stat{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:14px 16px;box-shadow:var(--sh-1);transition:transform .2s var(--ease),box-shadow .2s var(--ease)
}
.stat:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.stat__val{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:22px;font-weight:700;color:var(--brand-deep);line-height:1.3}
.stat__label{margin-top:2px;font-size:13px;color:var(--ink-3)}
.hero__visual{position:relative}
.hero__figure{
  position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-3);
  aspect-ratio:16/10;background:var(--surface-2)
}
.hero__figure img{width:100%;height:100%;object-fit:cover}
.hero__figure::after{
  content:"";position:absolute;inset:auto 0 0 0;height:56%;
  background:linear-gradient(180deg,rgba(27,18,48,0),rgba(27,18,48,.72))
}
.hero__caption{position:absolute;left:20px;right:96px;bottom:18px;color:#fff;z-index:2}
.hero__caption strong{display:block;font-size:16px;font-weight:700}
.hero__caption span{font-size:13px;color:rgba(255,255,255,.82)}
.hero__badge{
  position:absolute;right:18px;bottom:18px;z-index:2;
  width:76px;height:76px;border-radius:50%;background:var(--grad);color:#fff;
  display:grid;place-content:center;text-align:center;box-shadow:var(--sh-2)
}
.hero__badge b{display:block;font-family:var(--font-num);font-size:20px;line-height:1.1}
.hero__badge small{font-size:11px;opacity:.9}
/* ============ 实时状态条 ============ */
.ticker{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:var(--surface)
}
.ticker__inner{display:flex;align-items:center;gap:18px;padding:14px 0;overflow:hidden}
.ticker__label{
  display:inline-flex;align-items:center;gap:8px;flex-shrink:0;
  font-size:13px;font-weight:700;color:var(--brand-deep)
}
.ticker__label i{width:7px;height:7px;border-radius:50%;background:var(--brand-1);animation:pulse 1.8s infinite}
.ticker__list{display:flex;gap:28px;flex:1;min-width:0;overflow-x:auto;scrollbar-width:none}
.ticker__list::-webkit-scrollbar{display:none}
.ticker__list a{font-size:14px;color:var(--ink-2);white-space:nowrap}
.ticker__list a:hover{color:var(--brand-deep)}
.ticker__list a::before{content:"·";color:var(--accent);margin-right:8px;font-weight:800}
/* ============ 合集目录 ============ */
.collection-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.collection-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)
}
.collection-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.35)}
.collection-card__top{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.collection-card__index{
  width:42px;height:42px;border-radius:50%;flex-shrink:0;
  display:grid;place-items:center;font-family:var(--font-num);font-weight:700;font-size:17px;color:var(--brand-deep);
  background:var(--surface-2);border:2px solid transparent;
  background-image:linear-gradient(var(--surface-2),var(--surface-2)),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
}
.collection-card__title{font-size:20px;font-weight:700;color:var(--ink);line-height:1.4}
.collection-card__brief{margin-top:12px;font-size:14px;line-height:1.8;color:var(--ink-3);min-height:50px}
.collection-card__list{margin-top:8px;border-top:1px solid var(--line)}
.collection-card__list li{border-bottom:1px solid var(--line)}
.collection-card__list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 10px;font-size:14px;color:var(--ink-2);border-radius:var(--r-sm);
  transition:background-color .2s var(--ease),color .2s var(--ease),padding .2s var(--ease)
}
.collection-card__list a:hover{background:var(--surface-2);color:var(--brand-deep);padding-left:14px}
.collection-card__list a::after{content:"→";color:var(--accent);transition:transform .2s var(--ease)}
.collection-card__list a:hover::after{transform:translateX(3px)}
.collection-card__foot{margin-top:18px}
/* ============ 精选条目 ============ */
.feature-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px}
.feature-main{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease)
}
.feature-main:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.feature-main__media{aspect-ratio:16/9;overflow:hidden;background:var(--surface-2)}
.feature-main__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.feature-main:hover .feature-main__media img{transform:scale(1.04)}
.feature-main__body{padding:22px 24px 24px}
.feature-main__title{margin-top:12px;font-size:22px;line-height:1.45;font-weight:700;color:var(--ink)}
.feature-main__desc{margin-top:10px;font-size:15px;line-height:1.8;color:var(--ink-3)}
.feature-main__meta{margin-top:16px;display:flex;align-items:center;gap:14px;font-size:13px;color:var(--ink-3)}
.feature-side{display:flex;flex-direction:column;gap:16px}
.mini-card{
  display:grid;grid-template-columns:104px 1fr;gap:14px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:12px;box-shadow:var(--sh-1);min-height:104px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)
}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.3)}
.mini-card__media{aspect-ratio:1/1;border-radius:var(--r-sm);overflow:hidden;background:var(--surface-2)}
.mini-card__media img{width:100%;height:100%;object-fit:cover}
.mini-card__title{font-size:15px;font-weight:700;color:var(--ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-card__meta{margin-top:6px;font-size:13px;color:var(--ink-3)}
/* ============ CMS 列表 ============ */
.cms-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.cms-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)
}
.cms-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.3)}
.cms-card__top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.cms-card__title{margin-top:12px;font-size:18px;font-weight:700;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-card__title a{color:inherit}
.cms-card__title a:hover{color:var(--brand-deep)}
.cms-card__desc{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-3);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-card__meta{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-3)}
.cms-skeleton{border-radius:var(--r-lg);border:1px solid var(--line);background:var(--surface);padding:22px}
.sk-line{height:12px;border-radius:6px;background:linear-gradient(90deg,#F4EDE8 0%,#FBF6F2 40%,#F4EDE8 80%);background-size:200% 100%;animation:shimmer 1.4s infinite}
.sk-line+.sk-line{margin-top:12px}
.sk-line--w40{width:40%}
.sk-line--w80{width:80%}
.sk-line--w60{width:60%}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
.is-empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:56px 24px;background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-lg);
  text-align:center;color:var(--ink-3);font-size:15px
}
.is-empty svg{color:var(--ink-3);opacity:.7}
/* ============ 登录步骤 ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:step}
.step{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 22px 24px;box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease)
}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.step__num{
  width:40px;height:40px;border-radius:var(--r-sm);background:var(--grad-soft);
  display:grid;place-items:center;font-family:var(--font-num);font-weight:700;color:var(--brand-deep);
  border:1px solid rgba(255,90,43,.2)
}
.step__title{margin-top:16px;font-size:17px;font-weight:700;color:var(--ink)}
.step__text{margin-top:8px;font-size:14px;line-height:1.8;color:var(--ink-3)}
/* ============ 横向滚动推荐 ============ */
.scroll-x{
  display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:20px;overflow-x:auto;padding-bottom:8px;scroll-snap-type:x mandatory;scrollbar-width:thin
}
.scroll-x::-webkit-scrollbar{height:6px}
.scroll-x::-webkit-scrollbar-thumb{background:rgba(255,90,43,.28);border-radius:6px}
.rec-card{
  scroll-snap-align:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease)
}
.rec-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.rec-card__media{aspect-ratio:16/10;overflow:hidden;background:var(--surface-2)}
.rec-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rec-card:hover .rec-card__media img{transform:scale(1.05)}
.rec-card__body{padding:16px}
.rec-card__title{margin-top:10px;font-size:16px;font-weight:700;line-height:1.5;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
/* ============ CTA 横幅 ============ */
.cta-banner{
  display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;
  background:var(--ink);border-radius:var(--r-lg);padding:40px;position:relative;overflow:hidden
}
.cta-banner::before{
  content:"";position:absolute;width:420px;height:420px;right:-120px;bottom:-220px;
  background:radial-gradient(circle,rgba(255,90,43,.34),rgba(255,176,32,0) 70%);pointer-events:none
}
.cta-banner__title{position:relative;font-size:26px;font-weight:700;color:#fff;line-height:1.4}
.cta-banner__text{position:relative;margin-top:12px;font-size:15px;line-height:1.8;color:rgba(237,232,245,.76);max-width:560px}
.cta-banner__actions{position:relative;display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.qr-box{
  width:120px;height:120px;border-radius:var(--r-md);border:1px dashed rgba(255,255,255,.36);
  display:grid;place-content:center;text-align:center;color:rgba(237,232,245,.7);font-size:12px;
  background:rgba(255,255,255,.04);gap:6px
}
.qr-box__grid{
  width:56px;height:56px;margin:0 auto;border-radius:8px;
  background-image:
    linear-gradient(90deg,rgba(255,255,255,.6) 25%,transparent 25% 50%,rgba(255,255,255,.6) 50% 75%,transparent 75%),
    linear-gradient(0deg,rgba(255,255,255,.6) 25%,transparent 25% 50%,rgba(255,255,255,.6) 50% 75%,transparent 75%);
  background-size:14px 14px;opacity:.55
}
/* ============ FAQ ============ */
.faq{display:grid;gap:14px}
.faq__item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)
}
.faq__item[open]{border-color:rgba(255,90,43,.32);box-shadow:var(--sh-2)}
.faq__q{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:18px;font-weight:700;color:var(--ink);cursor:pointer;list-style:none
}
.faq__q::-webkit-details-marker{display:none}
.faq__q:hover{color:var(--brand-deep)}
.faq__icon{
  flex-shrink:0;width:30px;height:30px;border-radius:50%;position:relative;
  border:1.5px solid transparent;
  background-image:linear-gradient(var(--surface),var(--surface)),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box
}
.faq__icon::before,.faq__icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-deep);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .22s var(--ease),opacity .22s var(--ease)
}
.faq__icon::before{width:12px;height:2px}
.faq__icon::after{width:2px;height:12px}
.faq__item[open] .faq__icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq__a{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--ink-2);max-width:880px}
/* ============ 提示条 ============ */
.notice{
  display:flex;gap:12px;align-items:flex-start;padding:16px 18px;border-radius:var(--r-md);
  background:rgba(224,74,63,.07);border-left:3px solid var(--error);font-size:14px;line-height:1.8;color:var(--ink-2)
}
.notice--ok{background:rgba(31,169,113,.07);border-left-color:var(--success)}
.notice strong{color:var(--ink)}
/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#EDE8F5;margin-top:0;padding-top:56px}
.site-footer a{color:#EDE8F5}
.site-footer a:hover{color:var(--brand-2);transform:translateX(2px)}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px}
.footer__brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:14px}
.footer__brand .brand__text{color:#fff}
.footer__desc{font-size:14px;line-height:1.85;color:rgba(237,232,245,.7);max-width:320px}
.footer__social{display:flex;gap:10px;margin-top:18px}
.footer__social span{
  width:34px;height:34px;border-radius:var(--r-sm);display:grid;place-items:center;
  border:1px solid rgba(255,255,255,.16);font-size:12px;color:rgba(237,232,245,.8)
}
.footer__social span:hover{border-color:var(--brand-2);color:var(--brand-2)}
.footer__title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer__links{display:flex;flex-direction:column;gap:10px}
.footer__links a{font-size:14px;color:rgba(237,232,245,.74);transition:color .2s var(--ease),transform .2s var(--ease);display:inline-block}
.footer__contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(237,232,245,.74)}
.footer__contact strong{display:block;color:#fff;font-size:15px}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(237,232,245,.6)
}
.footer__bottom nav{display:flex;gap:18px;flex-wrap:wrap}
.footer__bottom a{font-size:13px;color:rgba(237,232,245,.6)}
/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  background:var(--grad);color:#fff;display:grid;place-items:center;z-index:50;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease)
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{transform:translateY(-3px);color:#fff}
/* ============ 响应式 ============ */
@media (max-width:1279px){
  .nav__menu{gap:2px}
  .nav__link{padding:8px 9px;font-size:13px}
  .search{width:190px}
  .hero h1{font-size:36px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scroll-x{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1023px){
  :root{--sec-pad:56px}
  .nav__menu{display:none}
  .nav__hamburger{display:grid}
  .search{width:170px}
  .hero__inner{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:32px}
  .hero__copy{max-width:none}
  .hero__visual{order:-1}
  .collection-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .cms-list{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-banner{grid-template-columns:1fr;padding:32px}
  .scroll-x{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  :root{--sec-pad:40px;--gutter:16px}
  .search{display:none}
  .hero{padding:36px 0 48px}
  .hero h1{font-size:27px;line-height:1.32}
  .hero__sub{font-size:15px}
  .hero__stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero__badge{width:64px;height:64px}
  .hero__badge b{font-size:17px}
  .sec-title{font-size:23px}
  .sec-head{margin-bottom:24px}
  .steps{grid-template-columns:1fr}
  .scroll-x{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
  .mini-card{grid-template-columns:88px 1fr}
  .footer__grid{grid-template-columns:1fr;gap:26px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .brand__text{font-size:15px}
  .faq__q{font-size:16px;padding:16px 18px}
  .faq__a{padding:0 18px 18px}
  .cta-banner{padding:26px 20px}
  .cta-banner__title{font-size:21px}
  .to-top{right:16px;bottom:18px}
  .collection-card{padding:20px}
}
@media (max-width:519px){
  .hero h1{font-size:24px}
  .btn{height:42px;padding:0 18px;font-size:14px}
  .hero__actions .btn{flex:1 1 100%}
  .scroll-x{grid-template-columns:1.15fr 1.15fr}
  .cms-card,.collection-card{padding:18px}
  .stat__val{font-size:19px}
}

/* roulang page: article */
/* ============ 设计令牌 ============ */
:root{
  --brand-1:#FF5A2B;
  --brand-2:#FFB020;
  --brand-deep:#E23A12;
  --accent:#14C8B8;
  --accent-deep:#0E9E92;
  --ink:#1B1230;
  --ink-2:#4A4160;
  --ink-3:#8A83A0;
  --line:#F0E4DC;
  --surface:#FFFFFF;
  --surface-2:#FFF1E8;
  --bg:#FFF7F2;
  --success:#1FA971;
  --warn:#F0902A;
  --error:#E04A3F;
  --success-bg:rgba(31,169,113,.08);
  --warn-bg:rgba(240,144,42,.08);
  --error-bg:rgba(224,74,63,.08);
  --accent-bg:rgba(20,200,184,.08);
  --brand-bg:rgba(255,90,43,.08);
  --grad:linear-gradient(135deg,#FF5A2B 0%,#FFB020 100%);
  --grad-soft:linear-gradient(135deg,rgba(255,90,43,.12) 0%,rgba(255,176,32,.12) 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(27,18,48,.06);
  --sh-2:0 12px 32px -8px rgba(226,58,18,.18);
  --sh-3:0 20px 44px -12px rgba(27,18,48,.16);
  --sp-section:72px;
  --sp-section-md:56px;
  --sp-section-sm:40px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:220ms;
  --nav-h:68px;
}
/* ============ reset ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),transform var(--dur) var(--ease);}
img{max-width:100%;display:block;height:auto;}
button,input{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}
/* ============ 容器 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.86);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  box-shadow:var(--sh-1);
  border-bottom-color:var(--line);
}
.nav{
  display:flex;align-items:center;gap:24px;
  height:var(--nav-h);
}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand__mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;
  box-shadow:var(--sh-2);
  flex:none;
}
.brand__text{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap;}
.nav__menu{display:flex;align-items:center;gap:28px;margin-left:8px;}
.nav__link{
  position:relative;
  font-size:14px;font-weight:500;color:var(--ink-2);
  padding:8px 10px;border-radius:var(--r-pill);
  white-space:nowrap;
}
.nav__link::after{
  content:"";position:absolute;left:20%;right:20%;bottom:2px;height:2px;border-radius:2px;
  background:var(--grad);opacity:0;transform:scaleX(.4);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.nav__link:hover{color:var(--brand-deep);background:var(--surface-2);}
.nav__link.is-active{color:var(--ink);font-weight:700;}
.nav__link.is-active::after{opacity:1;transform:scaleX(1);}
.nav__right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.command-search{
  position:relative;display:flex;align-items:center;
  width:240px;height:40px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  padding:0 12px 0 14px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.command-search:focus-within{border-color:var(--brand-1);box-shadow:var(--sh-2);}
.command-search__icon{
  width:15px;height:15px;flex:none;margin-right:8px;
  border:2px solid var(--ink-3);border-radius:50%;position:relative;
}
.command-search__icon::after{
  content:"";position:absolute;right:-5px;bottom:-4px;width:7px;height:2px;
  background:var(--ink-3);border-radius:2px;transform:rotate(45deg);
}
.command-search input{
  border:0;outline:none;background:transparent;width:100%;
  font-size:13px;color:var(--ink);
}
.command-search input::placeholder{color:var(--ink-3);}
.command-search__key{
  flex:none;font-size:11px;color:var(--ink-3);
  border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;background:var(--surface-2);
  font-variant-numeric:tabular-nums;
}
.icon-btn{
  width:36px;height:36px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--ink-2);border:1px solid transparent;
  font-size:15px;
}
.icon-btn:hover{background:var(--surface-2);color:var(--brand-deep);}
/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;
  border-radius:var(--r-pill);
  font-size:14px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--grad);color:#fff;box-shadow:var(--sh-2);}
.btn--primary:hover{transform:translateY(-1px);box-shadow:var(--sh-3);filter:brightness(1.05);}
.btn--primary:active{transform:translateY(0);}
.btn--outline{background:var(--surface);border-color:var(--line);color:var(--ink);}
.btn--outline:hover{border-color:var(--brand-1);color:var(--brand-deep);transform:translateY(-1px);}
.btn--ghost{background:transparent;color:var(--ink-2);}
.btn--ghost:hover{background:var(--surface-2);color:var(--brand-deep);}
.btn--sm{height:36px;padding:0 16px;font-size:13px;}
.btn--text{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-deep);font-size:14px;font-weight:600;
  text-decoration:underline;text-underline-offset:3px;
  padding:4px 0;
}
.btn--text:hover{color:var(--ink);}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;}
.btn.is-loading{pointer-events:none;opacity:.8;}
.nav__cta{height:40px;padding:0 20px;font-size:14px;}
/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;
  border-radius:var(--r-pill);
  padding:3px 12px;
  line-height:1.6;
}
.badge--data{
  background:var(--surface-2);color:var(--brand-deep);
  border:1px solid rgba(255,90,43,.2);
  font-variant-numeric:tabular-nums;
}
.badge--cat{background:var(--accent-bg);color:var(--accent-deep);}
.badge--brand{background:var(--brand-bg);color:var(--brand-deep);}
.badge--status{background:var(--success-bg);color:var(--success);}
.badge--status::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--success);animation:pulse 1.8s infinite;
}
.badge--meta{background:#F5F2FA;color:var(--ink-2);font-weight:500;}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.45;transform:scale(.82);}}
/* 汉堡与抽屉 */
.nav__burger{
  display:none;width:40px;height:40px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav__burger span{display:block;width:16px;height:2px;background:var(--ink);border-radius:2px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(27,18,48,.5);
  opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
  z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:86vw;max-width:360px;
  background:var(--surface);z-index:90;
  transform:translateX(100%);
  transition:transform 260ms var(--ease);
  padding:20px;overflow-y:auto;
  box-shadow:var(--sh-3);
}
.drawer.is-open{transform:translateX(0);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
.drawer__close{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:16px;color:var(--ink-2);
}
.drawer__close:hover{background:var(--surface-2);color:var(--brand-deep);}
.drawer__nav{display:flex;flex-direction:column;gap:4px;margin-bottom:20px;}
.drawer__nav a{
  padding:12px 14px;border-radius:var(--r-md);font-size:15px;font-weight:500;color:var(--ink-2);
}
.drawer__nav a:hover,.drawer__nav a.is-active{background:var(--surface-2);color:var(--brand-deep);font-weight:700;}
.drawer__search{
  display:flex;align-items:center;height:44px;border:1px solid var(--line);
  border-radius:var(--r-md);padding:0 14px;margin-bottom:16px;
}
.drawer__search input{border:0;outline:none;width:100%;background:transparent;font-size:14px;}
.drawer__cta{width:100%;}
/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:14px;color:var(--ink-3);
  padding:24px 0 0;
}
.breadcrumb a:hover{color:var(--brand-deep);}
.breadcrumb__sep{color:var(--ink-3);}
.breadcrumb__current{
  color:var(--ink);font-weight:700;
  max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
/* ============ 文章头部 ============ */
.article-head{padding:28px 0 8px;max-width:820px;}
.article-head__tags{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px;}
.article-head h1{
  font-size:34px;line-height:1.28;font-weight:800;letter-spacing:-.01em;
  color:var(--ink);margin-bottom:16px;
}
.article-meta{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);
  font-variant-numeric:tabular-nums;
}
.article-meta__item{display:inline-flex;align-items:center;gap:6px;}
.article-meta__dot{width:5px;height:5px;border-radius:50%;background:var(--accent);}
.article-meta .btn--sm{border:1px solid var(--line);background:var(--surface);color:var(--ink-2);border-radius:var(--r-pill);}
.article-meta .btn--sm:hover{border-color:var(--brand-1);color:var(--brand-deep);background:var(--surface-2);}
/* ============ 布局 ============ */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:48px;align-items:start;
  padding:32px 0 var(--sp-section);
}
.article-main{min-width:0;}
/* 封面 */
.article-cover{
  margin:24px 0 32px;border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-1);border:1px solid var(--line);
  background:var(--surface);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.article-cover figcaption{
  padding:10px 18px;font-size:13px;color:var(--ink-3);
  border-top:1px solid var(--line);background:var(--surface);
}
/* 正文 */
.article-body{
  max-width:760px;
  font-size:16px;line-height:1.9;color:var(--ink-2);
}
.article-body > * + *{margin-top:20px;}
.article-body p{margin:0;}
.article-body h2{
  position:relative;
  font-size:26px;font-weight:700;color:var(--ink);
  margin-top:44px;padding-left:16px;line-height:1.4;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:3px;background:var(--grad);
}
.article-body h3{font-size:20px;font-weight:700;color:var(--ink);margin-top:32px;}
.article-body h4{font-size:17px;font-weight:700;color:var(--ink);margin-top:24px;}
.article-body a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--ink);}
.article-body strong{color:var(--ink);font-weight:700;}
.article-body ul{padding-left:0;display:grid;gap:10px;}
.article-body ul li{position:relative;padding-left:20px;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.62em;width:7px;height:7px;border-radius:2px;
  background:var(--accent);transform:rotate(45deg);
}
.article-body ol{counter-reset:li;display:grid;gap:10px;}
.article-body ol li{position:relative;padding-left:32px;counter-increment:li;}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-size:13px;font-weight:700;color:var(--brand-deep);
  font-variant-numeric:tabular-nums;line-height:2.2;
}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  background:var(--surface-2);
  border-left:3px solid var(--accent);
  border-radius:var(--r-md);
  color:var(--ink-2);font-size:15px;line-height:1.85;
}
.article-body blockquote p + p{margin-top:10px;}
.article-body img{border-radius:var(--r-md);box-shadow:var(--sh-1);margin:24px auto;}
.article-body table{
  margin:24px 0;font-size:14px;border:1px solid var(--line);
  border-radius:var(--r-md);overflow:hidden;
}
.article-body thead th{
  background:var(--surface-2);color:var(--ink);font-weight:700;text-align:left;
  padding:12px 16px;font-size:14px;
}
.article-body tbody td{padding:12px 16px;border-top:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:#FFFBF8;}
.article-body code{
  background:var(--surface-2);color:var(--brand-deep);
  padding:2px 6px;border-radius:var(--r-sm);font-size:14px;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0;}
/* 空态 */
.empty-state{
  max-width:760px;padding:64px 32px;text-align:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
}
.empty-state__icon{
  width:96px;height:96px;margin:0 auto 20px;border-radius:50%;
  border:2px dashed var(--line);position:relative;
}
.empty-state__icon::before{
  content:"";position:absolute;left:26px;top:36px;width:44px;height:22px;
  border:2px solid var(--ink-3);border-top:0;border-radius:0 0 6px 6px;
}
.empty-state__icon::after{
  content:"";position:absolute;left:38px;top:40px;width:20px;height:2px;background:var(--ink-3);
}
.empty-state__title{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.empty-state__desc{font-size:14px;color:var(--ink-3);margin-bottom:22px;}
/* 文末动作条 */
.article-actions{
  margin-top:44px;padding:22px 24px;
  background:var(--surface-2);border-radius:var(--r-lg);
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  border:1px solid rgba(255,90,43,.14);
}
.article-actions__text{font-size:14px;color:var(--ink-2);font-weight:600;margin-right:auto;}
.article-actions__group{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.qr-box{
  width:120px;height:120px;border-radius:var(--r-md);
  border:1px dashed rgba(255,90,43,.4);background:var(--surface);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;color:var(--ink-3);text-align:center;line-height:1.5;
}
/* 上下篇 */
.prev-next{
  margin-top:28px;display:grid;grid-template-columns:1fr 1fr;gap:16px;
}
.prev-next a{
  display:block;padding:16px 18px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.prev-next a:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.35);}
.prev-next span{display:block;font-size:12px;color:var(--ink-3);margin-bottom:6px;}
.prev-next strong{display:block;font-size:15px;color:var(--ink);font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
/* 侧栏 */
.sidebar{display:grid;gap:24px;position:sticky;top:calc(var(--nav-h) + 24px);}
.side-card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:20px;box-shadow:var(--sh-1);
}
.side-card__title{
  font-size:15px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;gap:8px;margin-bottom:14px;
}
.side-card__title::before{
  content:"";width:4px;height:16px;border-radius:3px;background:var(--grad);
}
.toc{display:grid;gap:2px;max-height:320px;overflow:auto;}
.toc a{
  display:block;font-size:13.5px;color:var(--ink-2);
  padding:7px 10px;border-left:2px solid var(--line);border-radius:0 8px 8px 0;
}
.toc a:hover{background:var(--surface-2);color:var(--brand-deep);}
.toc a.is-current{border-left-color:var(--accent);color:var(--accent-deep);font-weight:700;background:var(--accent-bg);}
.hot-list{display:grid;gap:2px;}
.hot-list a{
  display:flex;align-items:center;gap:12px;
  padding:10px 8px;border-radius:var(--r-sm);font-size:14px;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.hot-list a:last-child{border-bottom:0;}
.hot-list a:hover{background:var(--surface-2);color:var(--brand-deep);}
.hot-list .num{
  flex:none;width:22px;height:22px;border-radius:7px;
  background:var(--surface-2);color:var(--brand-deep);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;
}
.hot-list .num.is-top{background:var(--grad);color:#fff;}
.hot-list .txt{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.quick-links{display:grid;gap:8px;}
.quick-links a{
  display:flex;align-items:center;justify-content:space-between;
  padding:11px 14px;border-radius:var(--r-md);
  background:var(--surface-2);font-size:14px;color:var(--ink-2);font-weight:500;
}
.quick-links a::after{content:"›";color:var(--brand-deep);font-size:16px;}
.quick-links a:hover{background:var(--grad-soft);color:var(--brand-deep);transform:translateY(-1px);}
/* 板块标题 */
.section{padding:var(--sp-section) 0;}
.section--tight{padding:var(--sp-section-md) 0;}
.section__head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:32px;flex-wrap:wrap;
}
.section__title{font-size:28px;font-weight:700;position:relative;padding-left:16px;}
.section__title::before{
  content:"";position:absolute;left:0;top:.24em;bottom:.24em;width:4px;border-radius:3px;background:var(--grad);
}
.section__desc{font-size:14px;color:var(--ink-3);margin-top:8px;padding-left:16px;}
/* 卡片 */
.card{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.3);}
.card__thumb{overflow:hidden;background:var(--surface-2);}
.card__thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 260ms var(--ease);}
.card:hover .card__thumb img{transform:scale(1.04);}
.card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card__title{font-size:18px;font-weight:700;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card:hover .card__title{color:var(--brand-deep);}
.card__desc{font-size:14px;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card__meta{margin-top:auto;display:flex;align-items:center;gap:12px;font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums;}
/* 相关推荐 */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
/* FAQ */
.faq{display:grid;gap:14px;max-width:900px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.faq-item.is-open{border-color:rgba(255,90,43,.32);box-shadow:var(--sh-2);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:17px;font-weight:700;color:var(--ink);
}
.faq-q:hover{background:var(--surface-2);}
.faq-icon{
  flex:none;width:28px;height:28px;border-radius:50%;
  border:1px solid rgba(255,90,43,.45);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand-deep);font-size:16px;line-height:1;font-weight:700;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.faq-item.is-open .faq-icon{background:var(--grad);color:#fff;border-color:transparent;transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease);}
.faq-a__inner{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--ink-2);}
/* CTA */
.cta-band{
  border-radius:var(--r-lg);
  padding:36px 40px;
  background:linear-gradient(135deg,#FFF1E8 0%,#FFE7D2 100%);
  border:1px solid rgba(255,90,43,.18);
  display:flex;align-items:center;gap:32px;flex-wrap:wrap;
}
.cta-band__text{flex:1;min-width:260px;}
.cta-band__title{font-size:24px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.cta-band__desc{font-size:14px;color:var(--ink-2);}
.cta-band__actions{display:flex;gap:12px;flex-wrap:wrap;}
/* 页脚 */
.site-footer{background:var(--ink);color:#EDE8F5;margin-top:var(--sp-section);}
.footer__grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;
  padding:56px 0 32px;
}
.footer__brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer__brand .brand__text{color:#fff;font-size:16px;}
.footer__desc{font-size:14px;color:rgba(237,232,245,.72);line-height:1.8;max-width:34ch;}
.footer__social{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap;}
.footer__social span{
  font-size:12px;color:rgba(237,232,245,.8);
  border:1px solid rgba(255,255,255,.16);border-radius:var(--r-pill);
  padding:4px 12px;
}
.footer__title{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer__links{display:grid;gap:10px;}
.footer__links a{
  font-size:14px;color:rgba(237,232,245,.74);
}
.footer__links a:hover{color:var(--brand-2);transform:translateX(2px);}
.footer__contact{display:grid;gap:10px;font-size:14px;color:rgba(237,232,245,.74);}
.footer__contact strong{display:block;color:#fff;font-size:13px;font-weight:600;margin-bottom:2px;}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:rgba(237,232,245,.6);
}
.footer__bottom nav{display:flex;gap:18px;flex-wrap:wrap;}
.footer__bottom nav a{color:rgba(237,232,245,.7);}
.footer__bottom nav a:hover{color:var(--brand-2);}
/* 返回顶部 */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:44px;height:44px;border-radius:50%;
  background:var(--grad);color:#fff;box-shadow:var(--sh-2);
  display:flex;align-items:center;justify-content:center;font-size:18px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{transform:translateY(-3px);box-shadow:var(--sh-3);}
/* 骨架与提示 */
.skeleton{
  background:linear-gradient(90deg,#F6F1EE 25%,#FDF8F4 37%,#F6F1EE 63%);
  background-size:400% 100%;
  animation:shimmer 1.4s ease infinite;
  border-radius:8px;
}
@keyframes shimmer{0%{background-position:100% 0;}100%{background-position:0 0;}}
.notice{
  display:flex;gap:10px;align-items:flex-start;
  background:var(--error-bg);border-left:3px solid var(--error);
  border-radius:var(--r-md);padding:12px 16px;font-size:14px;color:var(--ink-2);
}
/* ============ 响应式 ============ */
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px;}
  .related-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:1023px){
  :root{--sp-section:56px;--sp-section-md:48px;}
  .nav__menu{display:none;}
  .command-search{width:180px;}
  .article-layout{grid-template-columns:1fr;gap:32px;}
  .sidebar{position:static;grid-template-columns:1fr 1fr;display:grid;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--sp-section:40px;--sp-section-md:40px;--nav-h:60px;}
  .container{padding:0 16px;}
  .nav__menu,.command-search,.nav__right .icon-btn{display:none;}
  .nav__burger{display:flex;}
  .article-head h1{font-size:26px;}
  .article-body h2{font-size:22px;margin-top:36px;}
  .article-body{font-size:16px;line-height:1.85;}
  .section__title{font-size:22px;}
  .sidebar{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .prev-next{grid-template-columns:1fr;}
  .article-actions{padding:18px;}
  .article-actions__text{width:100%;margin-right:0;}
  .cta-band{padding:26px 22px;}
  .footer__grid{grid-template-columns:1fr;}
  .footer__bottom{flex-direction:column;align-items:flex-start;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:520px){
  .article-head h1{font-size:23px;}
  .brand__text{font-size:15px;}
  .btn{padding:0 18px;}
  .faq-q{font-size:15px;padding:16px 16px;}
  .faq-a__inner{padding:0 16px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
/* ============ 设计令牌 ============ */
:root{
  --brand-1:#FF5A2B;
  --brand-2:#FFB020;
  --brand-deep:#E23A12;
  --accent:#14C8B8;
  --accent-deep:#0E9E92;
  --ink:#1B1230;
  --ink-2:#4A4160;
  --ink-3:#8A83A0;
  --line:#F0E4DC;
  --surface:#FFFFFF;
  --surface-2:#FFF1E8;
  --bg:#FFF7F2;
  --success:#1FA971;
  --warn:#F0902A;
  --error:#E04A3F;
  --grad:linear-gradient(135deg,#FF5A2B 0%,#FFB020 100%);
  --grad-soft:linear-gradient(135deg,rgba(255,90,43,.12) 0%,rgba(255,176,32,.12) 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(27,18,48,.06);
  --sh-2:0 12px 32px -8px rgba(226,58,18,.18);
  --sh-3:0 20px 44px -12px rgba(27,18,48,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:220ms;
  --container:1200px;
  --section-y:72px;
  --header-h:68px;
}

/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-2);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.3;font-weight:700;}
h1{font-size:clamp(26px,3.4vw,40px);letter-spacing:-.01em;font-weight:800;}
h2{font-size:clamp(22px,2.4vw,30px);letter-spacing:-.01em;}
h3{font-size:20px;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
a{color:var(--brand-deep);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:var(--ink);}
img{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(255,90,43,.18);}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:var(--section-y) 0;}
.section--tight{padding:48px 0;}
.section--head{padding-bottom:24px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-head h2{position:relative;padding-left:16px;}
.section-head h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:5px;height:24px;border-radius:3px;background:var(--grad);}
.section-head p{margin:6px 0 0;color:var(--ink-3);font-size:14px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn--primary{background:var(--grad);color:#fff;box-shadow:var(--sh-2);}
.btn--primary:hover{color:#fff;transform:translateY(-1px);filter:brightness(1.05);box-shadow:0 16px 34px -10px rgba(226,58,18,.34);}
.btn--primary:active{transform:translateY(0);filter:brightness(.98);}
.btn--outline{background:var(--surface);color:var(--ink);border:1px solid var(--line);}
.btn--outline:hover{color:var(--brand-deep);border-color:var(--brand-1);transform:translateY(-1px);box-shadow:var(--sh-1);}
.btn--ghost{background:transparent;color:var(--ink-2);}
.btn--ghost:hover{background:var(--surface-2);color:var(--brand-deep);}
.btn--text{height:auto;padding:0;background:none;color:var(--brand-deep);font-weight:600;border-radius:4px;}
.btn--text:hover{color:var(--brand-1);text-decoration:underline;text-underline-offset:3px;}
.btn--sm{height:38px;padding:0 18px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}
.btn.is-loading{position:relative;color:transparent;}
.btn.is-loading::after{
  content:"";position:absolute;width:18px;height:18px;border-radius:50%;
  border:2px solid rgba(255,255,255,.5);border-top-color:#fff;animation:spin .7s linear infinite;
}
.btn--outline.is-loading::after{border-color:rgba(226,58,18,.3);border-top-color:var(--brand-deep);}
@keyframes spin{to{transform:rotate(360deg);}}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;line-height:1.4;
}
.badge--data{background:var(--surface-2);color:var(--brand-deep);border:1px solid rgba(255,90,43,.2);}
.badge--tag{background:rgba(20,200,184,.1);color:var(--accent-deep);}
.badge--ink{background:rgba(74,65,96,.09);color:var(--ink-2);}
.badge--ok{background:rgba(31,169,113,.1);color:var(--success);}
.dot{width:6px;height:6px;border-radius:50%;background:currentColor;display:inline-block;}
.badge--ok .dot{animation:pulse 1.8s ease-in-out infinite;}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.45;transform:scale(.82);}}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,247,242,.92);
  border-bottom:1px solid transparent;
  transition:background-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.header__inner{display:flex;align-items:center;gap:20px;height:var(--header-h);}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand__mark{
  width:34px;height:34px;border-radius:var(--r-sm);background:var(--grad);
  color:#fff;font-size:18px;font-weight:800;display:grid;place-items:center;
  box-shadow:var(--sh-2);
}
.brand__text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
.nav__menu{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav__link{
  position:relative;padding:8px 12px;border-radius:var(--r-pill);
  font-size:14px;font-weight:500;color:var(--ink-2);
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.nav__link:hover{color:var(--brand-deep);background:var(--surface-2);}
.nav__link.is-active{color:var(--ink);font-weight:700;}
.nav__link.is-active::after{
  content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:60%;height:2px;border-radius:2px;background:var(--grad);
}
.header__actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
.command-search{
  display:flex;align-items:center;gap:8px;
  width:240px;height:40px;padding:0 10px 0 14px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-pill);
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.command-search:focus-within{border-color:var(--brand-1);box-shadow:0 0 0 4px rgba(255,90,43,.12);}
.command-search svg{width:16px;height:16px;stroke:var(--ink-3);flex-shrink:0;}
.command-search input{
  border:0;outline:0;background:transparent;width:100%;font-size:14px;color:var(--ink);
}
.command-search input::placeholder{color:var(--ink-3);}
.command-search__kbd{
  font-size:11px;color:var(--ink-3);border:1px solid var(--line);
  border-radius:6px;padding:1px 6px;background:var(--surface-2);white-space:nowrap;
}
.icon-btn{
  width:36px;height:36px;border-radius:50%;
  display:grid;place-items:center;color:var(--ink-2);
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.icon-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
.icon-btn:hover{background:var(--surface-2);color:var(--brand-deep);transform:translateY(-1px);}
.hamburger{display:none;width:40px;height:40px;border-radius:var(--r-sm);place-items:center;color:var(--ink);}
.hamburger svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;}
.hamburger:hover{background:var(--surface-2);}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:86vw;max-width:360px;z-index:90;
  background:var(--surface);box-shadow:-16px 0 40px rgba(27,18,48,.18);
  transform:translateX(100%);transition:transform 260ms var(--ease);
  padding:22px;overflow-y:auto;display:flex;flex-direction:column;gap:18px;
}
.drawer.is-open{transform:translateX(0);}
.drawer__top{display:flex;align-items:center;justify-content:space-between;}
.drawer__close{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;color:var(--ink-2);background:var(--surface-2);}
.drawer__nav{display:flex;flex-direction:column;gap:6px;}
.drawer__nav a{
  padding:12px 14px;border-radius:var(--r-md);color:var(--ink-2);font-weight:500;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.drawer__nav a:hover,.drawer__nav a.is-active{background:var(--surface-2);color:var(--brand-deep);font-weight:700;}
.drawer__search{display:flex;align-items:center;gap:8px;height:46px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-pill);background:var(--bg);}
.drawer__search input{border:0;background:transparent;outline:0;width:100%;font-size:15px;}
.drawer__search svg{width:16px;height:16px;stroke:var(--ink-3);}
.overlay{
  position:fixed;inset:0;background:rgba(27,18,48,.5);z-index:80;
  opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.overlay.is-open{opacity:1;visibility:visible;}

/* ============ 面包屑 ============ */
.crumbs{padding:20px 0 0;font-size:14px;color:var(--ink-3);}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs a{color:var(--ink-3);}
.crumbs a:hover{color:var(--brand-deep);}
.crumbs .sep{color:var(--line);}
.crumbs .current{color:var(--ink);font-weight:700;}

/* ============ 分类页 banner ============ */
.page-hero{position:relative;margin-top:20px;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);}
.page-hero__media{position:relative;min-height:320px;}
.page-hero__media img{width:100%;height:100%;min-height:320px;object-fit:cover;position:absolute;inset:0;}
.page-hero__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(27,18,48,.88) 0%,rgba(27,18,48,.66) 48%,rgba(27,18,48,.24) 100%);
}
.page-hero__body{position:relative;z-index:2;padding:48px 40px;max-width:760px;color:#EDE8F5;}
.page-hero__body h1{color:#fff;margin-bottom:14px;}
.page-hero__body p{color:rgba(255,255,255,.86);font-size:16px;max-width:640px;}
.page-hero__tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.page-hero__tags .badge{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.22);}
.page-hero__actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px;}
.page-hero__actions .btn--outline{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.4);}
.page-hero__actions .btn--outline:hover{background:rgba(255,255,255,.2);color:#fff;border-color:#fff;}

/* ============ 分类页主布局：左目录 + 右内容流 ============ */
.cat-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:48px;align-items:start;}
.toc{position:sticky;top:calc(var(--header-h) + 20px);}
.toc__card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px 18px;box-shadow:var(--sh-1);}
.toc__title{font-size:14px;font-weight:700;color:var(--ink);letter-spacing:.02em;margin-bottom:14px;padding-left:12px;position:relative;}
.toc__title::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:16px;border-radius:2px;background:var(--grad);}
.toc__list{display:flex;flex-direction:column;gap:2px;}
.toc__link{
  display:block;padding:9px 12px;border-radius:var(--r-sm);
  font-size:14px;color:var(--ink-2);border-left:2px solid transparent;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.toc__link:hover{background:var(--surface-2);color:var(--brand-deep);}
.toc__link.is-active{color:var(--ink);font-weight:700;background:var(--surface-2);border-left-color:var(--accent);}
.toc__foot{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);font-size:13px;color:var(--ink-3);}
.toc__foot strong{display:block;color:var(--ink);font-size:14px;margin-bottom:4px;}

/* 章节 + 图文条目卡 */
.chapter{margin-bottom:56px;scroll-margin-top:calc(var(--header-h) + 24px);}
.chapter:last-child{margin-bottom:0;}
.chapter__head{margin-bottom:22px;}
.chapter__head h2{position:relative;padding-left:16px;margin-bottom:10px;}
.chapter__head h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:5px;height:22px;border-radius:3px;background:var(--grad);}
.chapter__head p{color:var(--ink-3);font-size:15px;margin:0;}
.entry-card{
  display:grid;grid-template-columns:minmax(0,1fr) 38%;
  gap:28px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh-1);
  transition:box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
  margin-bottom:22px;
}
.entry-card:hover{box-shadow:var(--sh-3);transform:translateY(-4px);border-color:rgba(255,90,43,.28);}
.entry-card--reverse{grid-template-columns:38% minmax(0,1fr);}
.entry-card--reverse .entry-card__body{order:2;}
.entry-card--reverse .entry-card__media{order:1;}
.entry-card__media{border-radius:var(--r-md);overflow:hidden;aspect-ratio:8/5;}
.entry-card__media img{width:100%;height:100%;object-fit:cover;transition:transform 260ms var(--ease);}
.entry-card:hover .entry-card__media img{transform:scale(1.04);}
.entry-card__meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:12px;}
.entry-card__body h3{margin-bottom:10px;font-size:20px;}
.entry-card__body p{font-size:15px;color:var(--ink-2);}
.entry-card__list{margin-top:14px;display:flex;flex-direction:column;gap:8px;}
.entry-card__list li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2);}
.entry-card__list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--grad);opacity:.9;
}
.entry-card__foot{margin-top:16px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;}

/* 列表行 */
.list-rows{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);}
.list-row{
  display:flex;align-items:center;gap:16px;padding:0 22px;min-height:62px;
  border-bottom:1px solid var(--line);color:var(--ink-2);font-size:15px;
  transition:background-color var(--dur) var(--ease),padding-left var(--dur) var(--ease);
}
.list-row:last-child{border-bottom:0;}
.list-row:hover{background:var(--surface-2);color:var(--brand-deep);}
.list-row__idx{
  width:28px;height:28px;flex-shrink:0;border-radius:50%;display:grid;place-items:center;
  font-size:13px;font-weight:700;color:var(--brand-deep);background:var(--surface-2);
  border:1px solid rgba(255,90,43,.2);
}
.list-row__text{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.list-row__arrow{color:var(--ink-3);transition:transform var(--dur) var(--ease),color var(--dur) var(--ease);}
.list-row:hover .list-row__arrow{transform:translateX(3px);color:var(--brand-1);}

/* ============ 分类要点区（图文两栏） ============ */
.spec-split{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:40px;box-shadow:var(--sh-1);
}
.spec-split__media{border-radius:var(--r-md);overflow:hidden;aspect-ratio:4/3;}
.spec-split__media img{width:100%;height:100%;object-fit:cover;}
.spec-split h2{margin-bottom:14px;}
.spec-split p{color:var(--ink-2);font-size:15px;}
.spec-points{margin-top:20px;display:grid;gap:12px;}
.spec-point{display:flex;gap:12px;align-items:flex-start;}
.spec-point__mark{
  width:26px;height:26px;flex-shrink:0;border-radius:50%;
  background:var(--grad-soft);border:1px solid rgba(255,90,43,.24);
  display:grid;place-items:center;font-size:12px;font-weight:700;color:var(--brand-deep);
}
.spec-point h3{font-size:16px;margin-bottom:2px;}
.spec-point p{font-size:14px;color:var(--ink-3);margin:0;}

/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:12px;}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);}
.faq-item:hover{border-color:rgba(255,90,43,.26);box-shadow:var(--sh-2);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;text-align:left;font-size:18px;font-weight:700;color:var(--ink);
}
.faq-icon{
  width:30px;height:30px;flex-shrink:0;border-radius:50%;display:grid;place-items:center;
  border:1.5px solid rgba(255,90,43,.4);color:var(--brand-deep);
  font-size:16px;font-weight:700;line-height:1;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.faq-item.is-open .faq-icon{background:var(--grad);color:#fff;border-color:transparent;transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 300ms var(--ease);}
.faq-a__inner{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--ink-2);}
.faq-item.is-open .faq-a{max-height:420px;}

/* ============ 相关分类互链 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.rel-card{
  display:flex;flex-direction:column;gap:10px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.28);}
.rel-card__icon{
  width:38px;height:38px;border-radius:var(--r-sm);background:var(--grad-soft);
  display:grid;place-items:center;color:var(--brand-deep);font-weight:800;font-size:15px;
  border:1px solid rgba(255,90,43,.2);
}
.rel-card h3{font-size:17px;}
.rel-card p{font-size:14px;color:var(--ink-3);margin:0;}
.rel-card span{font-size:14px;font-weight:600;color:var(--brand-deep);}

/* ============ 页尾 CTA 横幅（浅色） ============ */
.cta-banner{
  background:var(--surface-2);
  border:1px solid rgba(255,90,43,.18);
  border-radius:var(--r-lg);
  padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-banner h2{font-size:24px;margin-bottom:8px;}
.cta-banner p{color:var(--ink-2);font-size:15px;margin:0;max-width:560px;}
.cta-banner__actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#EDE8F5;margin-top:var(--section-y);padding:64px 0 28px;}
.site-footer a{color:#CFC7E0;}
.site-footer a:hover{color:var(--brand-2);transform:translateX(2px);}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;}
.footer__brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer__brand .brand__text{color:#fff;}
.footer__desc{font-size:14px;color:#B7AEC9;max-width:300px;margin:0 0 18px;}
.footer__social{display:flex;gap:10px;flex-wrap:wrap;}
.footer__social span{
  font-size:13px;color:#CFC7E0;padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.16);
}
.footer__title{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer__links{display:flex;flex-direction:column;gap:10px;}
.footer__links a{font-size:14px;display:inline-block;transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);}
.footer__contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:#B7AEC9;}
.footer__contact strong{display:block;color:#fff;font-size:14px;margin-bottom:2px;}
.footer__bottom{
  margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:#9C93B0;
}
.footer__bottom nav{display:flex;gap:16px;flex-wrap:wrap;}
.footer__bottom a{font-size:13px;}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--grad);color:#fff;display:grid;place-items:center;z-index:70;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;
  transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;}
.to-top:hover{transform:translateY(-3px);}
.to-top svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}

/* ============ 空态 / 骨架屏 / 错误提示 ============ */
.skeleton{background:linear-gradient(90deg,#F6EEE8 25%,#FDF7F3 37%,#F6EEE8 63%);background-size:400% 100%;animation:shimmer 1.4s infinite linear;border-radius:var(--r-sm);}
@keyframes shimmer{0%{background-position:100% 50%;}100%{background-position:0 50%;}}
.is-empty{text-align:center;padding:48px 20px;color:var(--ink-3);font-size:14px;}
.is-empty__icon{width:96px;height:96px;margin:0 auto 16px;border-radius:50%;border:2px dashed var(--line);display:grid;place-items:center;color:var(--ink-3);}
.is-empty__icon svg{width:40px;height:40px;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;}
.alert-error{
  display:flex;gap:12px;align-items:flex-start;
  background:rgba(224,74,63,.08);border-left:3px solid var(--error);
  border-radius:var(--r-md);padding:14px 18px;font-size:14px;color:#8C2A24;
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .command-search{width:200px;}
  .nav__menu{gap:0;}
  .nav__link{padding:8px 9px;font-size:13.5px;}
}
@media (max-width:1023px){
  :root{--section-y:56px;}
  .cat-layout{grid-template-columns:1fr;gap:28px;}
  .toc{position:static;}
  .toc__card{padding:18px;}
  .toc__list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:6px;}
  .toc__link{white-space:nowrap;border-left:0;border:1px solid var(--line);border-radius:var(--r-pill);padding:7px 14px;}
  .toc__link.is-active{border-color:transparent;background:var(--grad);color:#fff;}
  .entry-card,.entry-card--reverse{grid-template-columns:1fr;}
  .entry-card--reverse .entry-card__body{order:1;}
  .entry-card--reverse .entry-card__media{order:2;}
  .spec-split{grid-template-columns:1fr;gap:28px;padding:30px;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--section-y:40px;--header-h:62px;}
  .container{padding:0 16px;}
  .nav__menu,.command-search,.header__actions .icon-btn,.header__actions .btn{display:none;}
  .hamburger{display:grid;}
  .page-hero__body{padding:32px 22px;}
  .page-hero__media,.page-hero__media img{min-height:280px;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-banner{padding:26px 22px;}
  .faq-q{font-size:16px;padding:16px 18px;}
  .cta-banner__actions .btn{width:100%;}
  .page-hero__actions .btn{flex:1 1 auto;}
  .entry-card{padding:20px;}
  .spec-split{padding:22px;}
  .footer__grid{grid-template-columns:1fr;}
  .footer__bottom{flex-direction:column;align-items:flex-start;}
  .to-top{right:16px;bottom:16px;}
}
@media (max-width:520px){
  .list-row{padding:0 16px;font-size:14px;}
  .section-head{margin-bottom:24px;}
  .brand__text{font-size:15px;}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --brand-1:#FF5A2B;
  --brand-2:#FFB020;
  --brand-deep:#E23A12;
  --accent:#14C8B8;
  --accent-deep:#0E9E92;
  --ink:#1B1230;
  --ink-2:#4A4160;
  --ink-3:#8A83A0;
  --line:#F0E4DC;
  --surface:#FFFFFF;
  --surface-2:#FFF1E8;
  --bg:#FFF7F2;
  --success:#1FA971;
  --warn:#F0902A;
  --error:#E04A3F;
  --grad:linear-gradient(135deg,#FF5A2B 0%,#FFB020 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(27,18,48,.06);
  --sh-2:0 12px 32px -8px rgba(226,58,18,.18);
  --sh-3:0 20px 44px -12px rgba(27,18,48,.16);
  --sp-section:72px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --num:"DIN Alternate","Barlow","PingFang SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.75;color:var(--ink-2);
  background:var(--bg);-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.32;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(255,90,43,.18)}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-pill);font-size:15px;font-weight:600;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--grad);color:#fff;box-shadow:var(--sh-2)}
.btn--primary:hover{transform:translateY(-1px);filter:brightness(1.05);box-shadow:0 16px 34px -10px rgba(226,58,18,.34)}
.btn--primary:active{transform:translateY(0);filter:brightness(.97)}
.btn--ghost-w{border:1px solid var(--line);background:var(--surface);color:var(--ink)}
.btn--ghost-w:hover{border-color:var(--brand-1);color:var(--brand-deep);transform:translateY(-1px)}
.btn--quiet{background:transparent;color:var(--brand-deep);font-weight:600;height:auto;padding:2px 0}
.btn--quiet:hover{text-decoration:underline;text-underline-offset:3px}
.btn--sm{height:38px;padding:0 18px;font-size:14px}
.btn--block{width:100%}
.btn[disabled]{opacity:.4;cursor:not-allowed;transform:none}
.btn.is-loading{opacity:.85;pointer-events:none}
.btn.is-loading::after{
  content:"";width:14px;height:14px;border-radius:50%;
  border:2px solid rgba(255,255,255,.45);border-top-color:#fff;animation:spin .8s linear infinite;
}
.btn--ghost-w.is-loading::after{border-color:rgba(27,18,48,.2);border-top-color:var(--brand-deep)}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:var(--r-pill);
  font-size:13px;font-weight:600;font-variant-numeric:tabular-nums;white-space:nowrap;
}
.badge--data{background:var(--surface-2);color:var(--brand-deep);border:1px solid rgba(255,90,43,.2)}
.badge--tag{background:rgba(20,200,184,.1);color:var(--accent-deep)}
.badge--ink{background:rgba(74,65,96,.08);color:var(--ink-2)}
.badge--ok{background:rgba(31,169,113,.1);color:var(--success)}
.badge--ok::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--success);box-shadow:0 0 0 0 rgba(31,169,113,.5);animation:pulse 2.2s infinite}
.badge--warn{background:rgba(240,144,42,.12);color:#B8651A}
@keyframes pulse{70%{box-shadow:0 0 0 8px rgba(31,169,113,0)}100%{box-shadow:0 0 0 0 rgba(31,169,113,0)}}

/* ---------- 头部命令栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:rgba(255,247,242,.86);
  border-bottom:1px solid transparent;transition:background .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.site-header.is-scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(8px);box-shadow:var(--sh-1);border-bottom-color:var(--line)}
.nav__inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand__mark{
  width:38px;height:38px;border-radius:var(--r-sm);background:var(--grad);color:#fff;
  display:grid;place-items:center;font-size:18px;font-weight:800;box-shadow:var(--sh-2);
}
.brand__text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.nav__menu{display:flex;align-items:center;gap:28px;margin-left:8px}
.nav__link{position:relative;font-size:14px;font-weight:500;color:var(--ink-2);padding:6px 2px;border-radius:var(--r-pill);transition:color .2s var(--ease),background .2s var(--ease)}
.nav__link:hover{color:var(--brand-deep);background:var(--surface-2);box-shadow:0 0 0 8px var(--surface-2)}
.nav__link.is-active{color:var(--ink);font-weight:700}
.nav__link.is-active::after{
  content:"";position:absolute;left:20%;right:20%;bottom:-14px;height:2px;border-radius:2px;background:var(--grad);
}
.nav__actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav__search{
  position:relative;display:flex;align-items:center;width:240px;height:42px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-pill);
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.nav__search:focus-within{border-color:rgba(255,90,43,.5);box-shadow:var(--sh-2)}
.nav__search svg{position:absolute;left:14px;width:16px;height:16px;stroke:var(--ink-3);fill:none;stroke-width:2}
.nav__search input{flex:1;height:100%;border:0;background:none;padding:0 62px 0 38px;font-size:14px;color:var(--ink);outline:none;border-radius:var(--r-pill)}
.nav__search input::placeholder{color:var(--ink-3)}
.kbd{
  position:absolute;right:8px;display:inline-flex;align-items:center;gap:2px;height:24px;padding:0 8px;
  border-radius:8px;border:1px solid var(--line);background:var(--surface-2);color:var(--ink-3);
  font-size:11px;font-weight:600;font-variant-numeric:tabular-nums;
}
.icon-btn{
  width:36px;height:36px;border-radius:50%;display:grid;place-items:center;color:var(--ink-2);
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{background:var(--surface-2);color:var(--brand-deep);transform:translateY(-1px)}
.icon-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.9}
.nav__toggle{display:none;width:38px;height:38px;border-radius:12px;border:1px solid var(--line);background:var(--surface);place-items:center}
.nav__toggle svg{width:18px;height:18px;stroke:var(--ink);fill:none;stroke-width:2}

/* ---------- 抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:120;pointer-events:none}
.drawer__mask{position:absolute;inset:0;background:rgba(27,18,48,.5);opacity:0;transition:opacity .25s var(--ease)}
.drawer__panel{
  position:absolute;top:0;right:0;bottom:0;width:86vw;max-width:360px;background:var(--surface);
  padding:20px;display:flex;flex-direction:column;gap:18px;transform:translateX(102%);
  transition:transform .3s var(--ease);overflow-y:auto;box-shadow:var(--sh-3);
}
.drawer.is-open{pointer-events:auto}
.drawer.is-open .drawer__mask{opacity:1}
.drawer.is-open .drawer__panel{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between}
.drawer__close{width:38px;height:38px;border-radius:50%;background:var(--surface-2);display:grid;place-items:center;color:var(--ink)}
.drawer__close svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2}
.drawer__nav{display:flex;flex-direction:column}
.drawer__nav a{padding:14px 4px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-2);font-weight:500}
.drawer__nav a.is-active{color:var(--brand-deep);font-weight:700}
.drawer__search{display:flex;align-items:center;height:44px;border:1px solid var(--line);border-radius:var(--r-md);padding:0 14px;gap:10px;background:var(--bg)}
.drawer__search input{flex:1;border:0;background:none;outline:none;font-size:14px;color:var(--ink)}
.drawer__quick{display:flex;gap:12px}
.drawer__quick .btn{flex:1}
body.no-scroll{overflow:hidden}

/* ---------- 主视觉 ---------- */
.hero{position:relative;overflow:hidden;padding:44px 0 var(--sp-section)}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(27,18,48,.06) 1px,transparent 1px);
  background-size:22px 22px;opacity:.7;pointer-events:none;
}
.hero::after{
  content:"";position:absolute;top:-160px;right:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,176,32,.28) 0%,rgba(255,176,32,0) 68%);pointer-events:none;
}
.hero .container{position:relative;z-index:1}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-3);margin-bottom:28px}
.crumbs a:hover{color:var(--brand-deep)}
.crumbs span.sep{color:var(--ink-3);opacity:.6}
.crumbs strong{color:var(--ink);font-weight:700}
.hero__grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero__eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:18px}
.hero h1{font-size:40px;font-weight:800;letter-spacing:-.01em;margin-bottom:18px}
.hero__sub{font-size:17px;color:var(--ink-2);max-width:560px;margin-bottom:28px}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px}
.hero__stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;max-width:560px}
.stat{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:14px 16px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.stat:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.35)}
.stat__num{font-family:var(--num);font-variant-numeric:tabular-nums;font-size:22px;font-weight:800;color:var(--brand-deep);letter-spacing:-.02em}
.stat__label{font-size:13px;color:var(--ink-3);margin-top:2px}
.hero__card{
  position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-3);aspect-ratio:16/11;background:var(--ink);
}
.hero__card img{width:100%;height:100%;object-fit:cover}
.hero__card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(27,18,48,0) 42%,rgba(27,18,48,.72) 100%)}
.hero__card-body{position:absolute;left:22px;right:22px;bottom:20px;z-index:2;color:#fff}
.hero__card-body h2{color:#fff;font-size:18px;margin-bottom:4px}
.hero__card-body p{font-size:13px;color:rgba(255,255,255,.8)}
.hero__float{
  position:absolute;right:18px;top:18px;z-index:2;background:var(--surface);border-radius:var(--r-md);
  padding:10px 14px;box-shadow:var(--sh-2);display:flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--ink);
}
.hero__float i{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 0 0 rgba(31,169,113,.5);animation:pulse 2.2s infinite}

/* ---------- 板块通用 ---------- */
.section{padding:var(--sp-section) 0}
.section--alt{background:var(--surface)}
.section__head{max-width:720px;margin-bottom:40px}
.section__head h2{font-size:30px;font-weight:700;margin-bottom:12px;position:relative;padding-left:16px}
.section__head h2::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:2px;background:var(--grad)}
.section__head p{font-size:16px;color:var(--ink-2)}
.section__head--row{max-width:none;display:flex;align-items:flex-end;justify-content:space-between;gap:24px}

/* ---------- 时间轴流程 ---------- */
.timeline{position:relative}
.timeline::before{
  content:"";position:absolute;left:27px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,rgba(255,90,43,.35),rgba(20,200,184,.28),rgba(240,228,220,.6));
}
.tl__item{display:grid;grid-template-columns:56px 1fr;gap:24px;padding-bottom:24px}
.tl__item:last-child{padding-bottom:0}
.tl__marker{
  position:relative;z-index:1;width:56px;height:56px;border-radius:50%;background:var(--surface);
  border:2px solid var(--line);display:grid;place-items:center;
  font-family:var(--num);font-variant-numeric:tabular-nums;font-size:16px;font-weight:800;color:var(--ink-2);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.tl__item:hover .tl__marker{transform:scale(1.06);border-color:rgba(255,90,43,.45)}
.tl__item.is-current .tl__marker{background:var(--grad);border-color:transparent;color:#fff;box-shadow:var(--sh-2)}
.tl__card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px 24px;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.tl__card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.28)}
.tl__top{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:10px}
.tl__card h3{font-size:20px;margin-bottom:8px}
.tl__card p{font-size:15px;color:var(--ink-2)}
.tl__foot{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3)}
.tl__foot .btn--quiet{font-size:13px}

/* ---------- 验证方式清单 ---------- */
.checklist{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1)}
.checklist li{display:flex;align-items:center;gap:16px;padding:16px 22px;border-bottom:1px solid var(--line);transition:background .2s var(--ease)}
.checklist li:last-child{border-bottom:0}
.checklist li:hover{background:var(--surface-2)}
.checklist__no{
  width:34px;height:34px;flex:0 0 34px;border-radius:var(--r-sm);background:var(--surface-2);color:var(--brand-deep);
  display:grid;place-items:center;font-family:var(--num);font-variant-numeric:tabular-nums;font-size:14px;font-weight:800;
}
.checklist__body{flex:1;min-width:0}
.checklist__body strong{display:block;font-size:15px;color:var(--ink);font-weight:700}
.checklist__body span{font-size:13px;color:var(--ink-3)}
.checklist__arrow{color:var(--ink-3);transition:transform .2s var(--ease),color .2s var(--ease)}
.checklist li:hover .checklist__arrow{transform:translateX(3px);color:var(--brand-deep)}

/* ---------- 图文两栏要点 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.split__media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-3);aspect-ratio:4/3;background:var(--surface-2)}
.split__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.split__media:hover img{transform:scale(1.04)}
.points{display:grid;gap:16px;margin-top:24px}
.point{display:flex;gap:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:16px 18px;box-shadow:var(--sh-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.point:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.point__mark{width:8px;height:8px;border-radius:50%;background:var(--accent);margin-top:9px;flex:0 0 8px}
.point h3{font-size:16px;margin-bottom:4px}
.point p{font-size:14px;color:var(--ink-2)}

/* ---------- 提示条 ---------- */
.tips{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.tip{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px 22px 22px 26px;box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.tip::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--grad)}
.tip h3{font-size:17px;margin-bottom:8px}
.tip p{font-size:14px;color:var(--ink-2)}
.tip:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:14px;max-width:900px}
.faq__item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;transition:box-shadow .22s var(--ease),border-color .22s var(--ease)}
.faq__item:hover{border-color:rgba(255,90,43,.28)}
.faq__item.is-open{box-shadow:var(--sh-2);border-color:rgba(255,90,43,.3)}
.faq__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;text-align:left;font-size:18px;font-weight:700;color:var(--ink);
}
.faq__icon{
  flex:0 0 34px;width:34px;height:34px;border-radius:50%;border:1px solid rgba(255,90,43,.35);background:var(--surface);
  display:grid;place-items:center;color:var(--brand-deep);font-size:18px;font-weight:700;line-height:1;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.faq__item.is-open .faq__icon{background:var(--grad);color:#fff;border-color:transparent;transform:rotate(45deg)}
.faq__panel{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq__panel p{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- 相关分类 ---------- */
.rel{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.rel__card{
  display:flex;flex-direction:column;gap:10px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rel__card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.35)}
.rel__no{font-family:var(--num);font-size:13px;font-weight:800;color:var(--brand-deep);letter-spacing:.08em}
.rel__card h3{font-size:17px}
.rel__card p{font-size:14px;color:var(--ink-3);flex:1}
.rel__more{font-size:14px;font-weight:600;color:var(--brand-deep);display:inline-flex;align-items:center;gap:6px}
.rel__card:hover .rel__more{gap:10px}

/* ---------- CTA 横幅 ---------- */
.cta-band{
  background:var(--surface-2);border:1px solid rgba(255,90,43,.16);border-radius:var(--r-lg);
  padding:36px 40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h2{font-size:26px;margin-bottom:8px}
.cta-band p{font-size:15px;color:var(--ink-2);max-width:560px}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#EDE8F5;padding:56px 0 0;margin-top:var(--sp-section)}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:40px}
.footer__brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:16px}
.footer__brand .brand__text{color:#fff}
.footer__desc{font-size:14px;color:rgba(237,232,245,.72);line-height:1.8;max-width:320px}
.footer__social{display:flex;gap:10px;margin-top:18px}
.footer__social span{
  font-size:13px;padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.18);color:rgba(237,232,245,.82);
}
.footer__title{font-size:15px;color:#fff;margin-bottom:16px}
.footer__links{display:flex;flex-direction:column;gap:12px}
.footer__links a{font-size:14px;color:rgba(237,232,245,.75);transition:color .2s var(--ease),transform .2s var(--ease)}
.footer__links a:hover{color:var(--brand-2);transform:translateX(2px)}
.footer__contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(237,232,245,.75)}
.footer__contact strong{display:block;color:#fff;font-weight:600;margin-bottom:2px}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:16px;
  align-items:center;justify-content:space-between;font-size:13px;color:rgba(237,232,245,.6);
}
.footer__bottom nav{display:flex;flex-wrap:wrap;gap:18px}
.footer__bottom a:hover{color:var(--brand-2)}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;background:var(--grad);color:#fff;
  display:grid;place-items:center;box-shadow:var(--sh-2);opacity:0;pointer-events:none;
  transition:opacity .25s var(--ease),transform .25s var(--ease);z-index:60;
}
.to-top.is-visible{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-3px)}
.to-top svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2.2}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav__search{width:200px}
  .rel{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  :root{--sp-section:56px}
  .nav__menu{display:none}
  .nav__toggle{display:grid}
  .nav__search{display:none}
  .hero__grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:34px}
  .split{grid-template-columns:1fr;gap:32px}
  .tips{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--sp-section:40px}
  .container{padding:0 16px}
  .hero{padding-top:28px}
  .hero h1{font-size:28px}
  .hero__sub{font-size:16px}
  .hero__stats{grid-template-columns:1fr 1fr}
  .timeline::before{left:19px}
  .tl__item{grid-template-columns:40px 1fr;gap:16px}
  .tl__marker{width:40px;height:40px;font-size:14px}
  .tl__card{padding:18px}
  .faq__q{font-size:16px;padding:18px}
  .section__head h2{font-size:24px}
  .section__head--row{flex-direction:column;align-items:flex-start}
  .cta-band{padding:26px;flex-direction:column;align-items:flex-start}
  .rel{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:520px){
  .hero__stats{grid-template-columns:1fr}
  .hero__cta .btn{width:100%}
  .cta-band__actions .btn{width:100%}
  .checklist li{gap:12px;padding:14px 16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
:root{
  --brand-1:#FF5A2B;
  --brand-2:#FFB020;
  --brand-deep:#E23A12;
  --accent:#14C8B8;
  --accent-deep:#0E9E92;
  --ink:#1B1230;
  --ink-2:#4A4160;
  --ink-3:#8A83A0;
  --line:#F0E4DC;
  --surface:#FFFFFF;
  --surface-2:#FFF1E8;
  --bg:#FFF7F2;
  --success:#1FA971;
  --warn:#F0902A;
  --error:#E04A3F;
  --grad:linear-gradient(135deg,#FF5A2B 0%,#FFB020 100%);
  --grad-soft:linear-gradient(135deg,rgba(255,90,43,.12) 0%,rgba(255,176,32,.12) 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(27,18,48,.06);
  --sh-2:0 12px 32px -8px rgba(226,58,18,.18);
  --sh-3:0 20px 44px -12px rgba(27,18,48,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:220ms;
  --container:1200px;
  --sec-pad:72px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em;font-weight:700;line-height:1.3}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
::selection{background:rgba(255,90,43,.18)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ 顶部命令栏 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.82);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:background var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.94);
  box-shadow:var(--sh-1);
  border-bottom-color:var(--line);
}
.nav{display:flex;align-items:center;gap:22px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{
  width:34px;height:34px;border-radius:var(--r-sm);
  background:var(--grad);color:#fff;
  display:grid;place-items:center;
  font-size:17px;font-weight:800;line-height:1;
  box-shadow:0 8px 18px -8px rgba(226,58,18,.7);
  flex:0 0 auto;
}
.brand__text{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap}
.nav__menu{display:flex;align-items:center;gap:6px}
.nav__link{
  position:relative;
  font-size:14px;font-weight:500;color:var(--ink-2);
  padding:8px 12px;border-radius:var(--r-pill);
  transition:color var(--t) var(--ease),background var(--t) var(--ease);
  white-space:nowrap;
}
.nav__link:hover{color:var(--brand-deep);background:var(--surface-2)}
.nav__link.is-active{color:var(--ink);font-weight:700}
.nav__link.is-active::after{
  content:"";position:absolute;left:22%;right:22%;bottom:-2px;height:2px;border-radius:2px;background:var(--grad);
}
.nav__actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav__search{
  display:flex;align-items:center;gap:8px;
  width:240px;height:40px;padding:0 12px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  transition:box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.nav__search:focus-within{border-color:rgba(255,90,43,.55);box-shadow:0 0 0 3px rgba(255,90,43,.12),var(--sh-2)}
.nav__search svg{flex:0 0 auto;color:var(--ink-3)}
.nav__search input{
  flex:1 1 auto;min-width:0;border:0;outline:none;background:transparent;
  font-size:13px;color:var(--ink);
}
.nav__search input::placeholder{color:var(--ink-3)}
.nav__search kbd{
  flex:0 0 auto;font-family:var(--font);font-size:11px;color:var(--ink-3);
  border:1px solid var(--line);border-radius:6px;padding:1px 5px;background:var(--bg);
}
.icon-btn{
  width:36px;height:36px;border-radius:50%;
  display:grid;place-items:center;color:var(--ink-2);
  border:1px solid transparent;
  transition:background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease);
}
.icon-btn:hover{background:var(--surface-2);color:var(--brand-deep);border-color:rgba(255,90,43,.25)}
.icon-btn:active{transform:scale(.94)}
.nav__burger{display:none}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),filter var(--t) var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--grad);color:#fff;box-shadow:var(--sh-2)}
.btn--primary:hover{transform:translateY(-1px);box-shadow:0 16px 34px -10px rgba(226,58,18,.42);filter:brightness(1.05)}
.btn--primary:active{transform:translateY(0);filter:brightness(.96)}
.btn--ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn--ghost:hover{border-color:rgba(255,90,43,.55);color:var(--brand-deep);transform:translateY(-1px)}
.btn--text{height:auto;padding:0;border-radius:0;color:var(--brand-deep);font-weight:700}
.btn--text:hover{text-decoration:underline;text-underline-offset:3px}
.btn--sm{height:38px;padding:0 18px;font-size:14px}
.btn--block{width:100%}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}

/* ============ 面包屑 ============ */
.crumbs{padding:20px 0 0;font-size:14px;color:var(--ink-3)}
.crumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs__list a{color:var(--ink-3);transition:color var(--t) var(--ease)}
.crumbs__list a:hover{color:var(--brand-deep)}
.crumbs__sep{color:var(--line)}
.crumbs__current{color:var(--ink);font-weight:700}

/* ============ 分类 Hero ============ */
.cat-hero{position:relative;padding:40px 0 var(--sec-pad);overflow:hidden}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(27,18,48,.07) 1px,transparent 1px);
  background-size:18px 18px;
  opacity:.7;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 78%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.8),transparent 78%);
  pointer-events:none;
}
.cat-hero::after{
  content:"";position:absolute;top:-160px;right:-120px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,176,32,.28) 0%,rgba(255,90,43,.12) 45%,transparent 70%);
  pointer-events:none;
}
.cat-hero__inner{position:relative;z-index:1;max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-deep);
  background:var(--surface-2);border:1px solid rgba(255,90,43,.2);
  border-radius:var(--r-pill);padding:5px 14px;
}
.eyebrow__dot{width:6px;height:6px;border-radius:50%;background:var(--grad);box-shadow:0 0 0 3px rgba(255,90,43,.15)}
.cat-hero h1{margin:20px 0 0;font-size:40px;font-weight:800;line-height:1.2}
.cat-hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.cat-hero__lead{margin-top:16px;font-size:16px;color:var(--ink-2);max-width:660px}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:14px}
.stat-row{margin-top:34px;display:flex;flex-wrap:wrap;gap:12px}
.stat{
  background:#fff;border:1px solid rgba(255,90,43,.2);border-radius:var(--r-md);
  padding:12px 18px;box-shadow:var(--sh-1);min-width:150px;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.stat:hover{transform:translateY(-4px);box-shadow:var(--sh-3)}
.stat__k{font-size:12px;color:var(--ink-3);letter-spacing:.02em}
.stat__v{font-size:16px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;margin-top:2px}

/* ============ 通用板块 ============ */
.section{padding:var(--sec-pad) 0}
.section--alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.sec-head h2{font-size:30px;font-weight:700;position:relative;padding-left:16px}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.22em;width:4px;height:1.05em;border-radius:3px;background:var(--grad);
}
.sec-head__desc{font-size:14px;color:var(--ink-3);margin-top:8px;max-width:640px}

/* ============ 筛选标签 ============ */
.filter-bar{
  display:flex;gap:10px;overflow-x:auto;padding:4px 2px 14px;
  scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;
  scrollbar-width:none;
}
.filter-bar::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;scroll-snap-align:start;
  height:38px;padding:0 18px;border-radius:var(--r-pill);
  display:inline-flex;align-items:center;
  font-size:14px;font-weight:600;color:var(--ink-2);
  background:#fff;border:1px solid var(--line);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),background var(--t) var(--ease);
}
.chip:hover{color:var(--brand-deep);border-color:rgba(255,90,43,.4);transform:translateY(-2px)}
.chip.is-current{background:var(--grad);color:#fff;border-color:transparent;box-shadow:var(--sh-2)}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.35)}
.card__media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface-2)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease)}
.card:hover .card__media img{transform:scale(1.04)}
.card__tag{
  position:absolute;left:14px;top:14px;
  font-size:12px;font-weight:700;color:var(--accent-deep);
  background:rgba(20,200,184,.12);border:1px solid rgba(20,200,184,.32);
  border-radius:var(--r-pill);padding:4px 12px;
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
}
.card__body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.card__body h3{font-size:18px;font-weight:700;line-height:1.45}
.card__desc{margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.7}
.card__foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line)}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;
  color:var(--brand-deep);background:var(--surface-2);
  border:1px solid rgba(255,90,43,.22);border-radius:var(--r-pill);
  padding:4px 12px;
}
.card__link{font-size:14px;font-weight:700;color:var(--brand-deep);display:inline-flex;align-items:center;gap:6px}
.card__link svg{transition:transform var(--t) var(--ease)}
.card:hover .card__link svg{transform:translateX(3px)}
.card__link:hover{text-decoration:underline;text-underline-offset:3px}

/* ============ 图文两栏要点 ============ */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.split--reverse .split__media{order:2}
.split__media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-3);aspect-ratio:4/3;position:relative}
.split__media img{width:100%;height:100%;object-fit:cover}
.split__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 55%,rgba(27,18,48,.28) 100%);
}
.point-list{margin-top:24px;display:grid;gap:14px}
.point-list li{
  display:flex;gap:14px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 18px;box-shadow:var(--sh-1);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.point-list li:hover{transform:translateY(-3px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.3)}
.point-list__no{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  display:grid;place-items:center;font-size:13px;font-weight:800;color:var(--brand-deep);
  background:var(--surface-2);border:1px solid rgba(255,90,43,.25);font-variant-numeric:tabular-nums;
}
.point-list__t{font-size:15px;font-weight:700;color:var(--ink)}
.point-list__d{font-size:14px;color:var(--ink-2);margin-top:2px}

/* ============ 提示条 ============ */
.note-strip{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--surface-2);border:1px solid rgba(255,90,43,.2);
  border-left:3px solid var(--brand-1);
  border-radius:var(--r-md);padding:18px 22px;margin-top:32px;
}
.note-strip__icon{
  flex:0 0 auto;width:32px;height:32px;border-radius:50%;
  background:#fff;display:grid;place-items:center;color:var(--brand-deep);
  border:1px solid rgba(255,90,43,.25);font-weight:800;
}
.note-strip strong{color:var(--ink);display:block;margin-bottom:4px;font-size:15px}
.note-strip p{font-size:14px;color:var(--ink-2)}

/* ============ FAQ ============ */
.faq{max-width:900px;margin:0 auto}
.faq__item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.faq__item + .faq__item{margin-top:14px}
.faq__item[open]{border-color:rgba(255,90,43,.3);box-shadow:var(--sh-2)}
.faq__q{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;font-size:18px;font-weight:700;color:var(--ink);
  cursor:pointer;list-style:none;
}
.faq__q::-webkit-details-marker{display:none}
.faq__sign{
  flex:0 0 auto;width:32px;height:32px;border-radius:50%;
  display:grid;place-items:center;font-size:18px;font-weight:700;color:var(--brand-deep);
  background:#fff;border:1px solid rgba(255,90,43,.35);
  transition:background var(--t) var(--ease),color var(--t) var(--ease),transform var(--t) var(--ease);
}
.faq__q:hover .faq__sign{background:var(--grad-soft);transform:rotate(90deg)}
.faq__item[open] .faq__sign{background:var(--grad);color:#fff;border-color:transparent}
.faq__item[open] .faq__sign::before{content:"−"}
.faq__sign::before{content:"+"}
.faq__a{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--ink-2);border-top:1px dashed var(--line);margin-top:0;padding-top:18px}

/* ============ 相关分类互链 ============ */
.related{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.related__card{
  display:flex;flex-direction:column;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh-1);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease);
}
.related__card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.35)}
.related__index{font-size:13px;font-weight:800;color:var(--brand-deep);font-variant-numeric:tabular-nums}
.related__title{font-size:17px;font-weight:700;color:var(--ink)}
.related__desc{font-size:13px;color:var(--ink-3);line-height:1.7}
.related__card.is-current{background:var(--surface-2);border-color:rgba(255,90,43,.35)}
.related__card.is-current .related__tag{color:var(--accent-deep);font-size:12px;font-weight:700}

/* ============ CTA 横幅 ============ */
.cta-banner{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  background:var(--surface-2);
  border:1px solid rgba(255,90,43,.22);
  padding:44px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.cta-banner__bg{
  position:absolute;inset:0;opacity:.16;
  background-image:url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  mix-blend-mode:luminosity;pointer-events:none;
}
.cta-banner__inner{position:relative;z-index:1;max-width:640px}
.cta-banner h2{font-size:26px}
.cta-banner p{margin-top:10px;font-size:15px;color:var(--ink-2)}
.cta-banner__actions{position:relative;z-index:1;display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:#EDE8F5;margin-top:var(--sec-pad);padding:56px 0 0}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:40px}
.footer__brand{display:flex;align-items:center;gap:10px}
.footer__brand .brand__text{color:#fff}
.footer__desc{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(237,232,245,.72);max-width:320px}
.footer__social{margin-top:18px;display:flex;gap:10px;flex-wrap:wrap}
.footer__social span{
  font-size:13px;padding:5px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.18);color:rgba(237,232,245,.82);
  transition:border-color var(--t) var(--ease),color var(--t) var(--ease);
}
.footer__social span:hover{border-color:var(--brand-2);color:var(--brand-2)}
.footer__title{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer__links{display:grid;gap:11px}
.footer__links a{font-size:14px;color:rgba(237,232,245,.72);transition:color var(--t) var(--ease),transform var(--t) var(--ease);width:fit-content}
.footer__links a:hover{color:var(--brand-2);transform:translateX(2px)}
.footer__contact{display:grid;gap:12px;font-size:14px;color:rgba(237,232,245,.72)}
.footer__contact strong{display:block;color:#fff;font-size:14px;font-weight:700}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(237,232,245,.62);
}
.footer__bottom nav{display:flex;gap:18px;flex-wrap:wrap}
.footer__bottom nav a{color:rgba(237,232,245,.62);transition:color var(--t) var(--ease)}
.footer__bottom nav a:hover{color:var(--brand-2)}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:70;
  width:44px;height:44px;border-radius:50%;
  background:var(--grad);color:#fff;display:grid;place-items:center;
  box-shadow:var(--sh-2);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity var(--t) var(--ease),transform var(--t) var(--ease),visibility var(--t) var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{filter:brightness(1.06);transform:translateY(-2px)}

/* ============ 移动端抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(27,18,48,.5);z-index:90;
  opacity:0;visibility:hidden;transition:opacity var(--t) var(--ease),visibility var(--t) var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:86vw;max-width:380px;z-index:100;
  background:#fff;box-shadow:var(--sh-3);
  transform:translateX(102%);transition:transform 260ms var(--ease);
  display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;gap:10px;padding:18px 20px;border-bottom:1px solid var(--line)}
.drawer__head .icon-btn{margin-left:auto}
.drawer__body{padding:20px;display:grid;gap:20px}
.drawer__search{
  display:flex;align-items:center;gap:8px;height:46px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-md);background:var(--bg);
}
.drawer__search input{flex:1;border:0;outline:none;background:transparent;font-size:14px;color:var(--ink)}
.drawer__nav{display:grid;gap:6px}
.drawer__nav a{
  padding:12px 14px;border-radius:var(--r-md);font-size:15px;font-weight:600;color:var(--ink-2);
  transition:background var(--t) var(--ease),color var(--t) var(--ease);
}
.drawer__nav a:hover{background:var(--surface-2);color:var(--brand-deep)}
.drawer__nav a.is-active{background:var(--grad-soft);color:var(--brand-deep)}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .related{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  :root{--sec-pad:56px}
  .nav__menu{display:none}
  .nav__search{display:none}
  .nav__burger{display:grid}
  .cat-hero h1{font-size:34px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr;gap:28px}
  .split--reverse .split__media{order:0}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:767px){
  :root{--sec-pad:40px}
  .container{padding:0 16px}
  .cat-hero{padding-top:28px}
  .cat-hero h1{font-size:28px}
  .cat-hero__lead{font-size:15px}
  .sec-head h2{font-size:24px}
  .card-grid{grid-template-columns:1fr}
  .stat{min-width:calc(50% - 6px);flex:1 1 calc(50% - 6px)}
  .cta-banner{padding:32px 24px}
  .cta-banner h2{font-size:22px}
  .cta-banner__actions{width:100%}
  .cta-banner__actions .btn{flex:1 1 auto}
  .faq__q{font-size:16px;padding:18px}
  .faq__a{padding:0 18px 18px}
  .footer__grid{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:520px){
  .cat-hero h1{font-size:26px}
  .btn{height:42px;padding:0 18px;font-size:14px}
  .stat{min-width:100%;flex:1 1 100%}
  .related{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category4 */
:root{
  --brand-1:#FF5A2B;
  --brand-2:#FFB020;
  --brand-deep:#E23A12;
  --accent:#14C8B8;
  --accent-deep:#0E9E92;
  --ink:#1B1230;
  --ink-2:#4A4160;
  --ink-3:#8A83A0;
  --line:#F0E4DC;
  --surface:#FFFFFF;
  --surface-2:#FFF1E8;
  --bg:#FFF7F2;
  --success:#1FA971;
  --warn:#F0902A;
  --error:#E04A3F;
  --grad:linear-gradient(135deg,#FF5A2B 0%,#FFB020 100%);
  --r-lg:24px;
  --r-md:16px;
  --r-sm:10px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(27,18,48,.06);
  --sh-2:0 12px 32px -8px rgba(226,58,18,.18);
  --sh-3:0 20px 44px -12px rgba(27,18,48,.16);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:68px;
  --sec-y:72px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink-2);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.32;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
::selection{background:rgba(255,90,43,.18)}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec-y) 0}
.section--tight{padding:40px 0 var(--sec-y)}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.section__head h2{font-size:30px;display:flex;align-items:center;gap:12px}
.section__head h2::before{content:"";width:4px;height:26px;border-radius:3px;background:var(--grad);flex:0 0 auto}
.section__head p{font-size:15px;color:var(--ink-3);max-width:640px;margin-top:8px}
.section__head .section__text{max-width:760px}

/* ============ 顶部命令栏 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(255,247,242,.84);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  box-shadow:var(--sh-1);
  border-bottom-color:var(--line);
}
.nav{height:var(--nav-h);display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{
  width:38px;height:38px;border-radius:var(--r-md);
  background:var(--grad);color:#fff;
  display:grid;place-items:center;
  font-size:18px;font-weight:800;
  box-shadow:var(--sh-2);
  transition:transform .22s var(--ease);
}
.brand:hover .brand__mark{transform:translateY(-2px) rotate(-3deg)}
.brand__text{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap}
.nav__menu{display:flex;align-items:center;gap:6px;margin-left:12px}
.nav__link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  border-radius:var(--r-pill);
  font-size:14px;
  font-weight:500;
  color:var(--ink-2);
  white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav__link:hover{color:var(--brand-deep);background:var(--surface-2)}
.nav__link.is-active{color:var(--ink);font-weight:700}
.nav__link.is-active::after{
  content:"";position:absolute;left:50%;bottom:-3px;
  width:60%;height:2px;border-radius:2px;
  background:var(--grad);transform:translateX(-50%);
}
.nav__tools{margin-left:auto;display:flex;align-items:center;gap:12px}
.search{position:relative;width:240px;flex:0 0 auto}
.search__icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--ink-3);display:flex}
.search input{
  width:100%;height:40px;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink);
  font-size:14px;
  padding:0 58px 0 40px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search input::placeholder{color:var(--ink-3)}
.search input:focus{outline:none;border-color:var(--brand-1);box-shadow:var(--sh-2)}
.search__kbd{
  position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:11px;color:var(--ink-3);
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:6px;
  padding:2px 6px;
  font-variant-numeric:tabular-nums;
}
.icon-btn{
  width:36px;height:36px;border-radius:50%;
  display:grid;place-items:center;
  color:var(--ink-2);
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.icon-btn:hover{background:var(--surface-2);color:var(--brand-deep);border-color:var(--line)}
.icon-btn:active{transform:scale(.94)}
.nav__toggle{display:none;width:40px;height:40px;border-radius:var(--r-sm);color:var(--ink);place-items:center}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 24px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;
  white-space:nowrap;
  border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),filter .2s var(--ease);
}
.btn--primary{background:var(--grad);color:#fff;box-shadow:var(--sh-2)}
.btn--primary:hover{transform:translateY(-1px);filter:brightness(1.05);box-shadow:0 16px 34px -10px rgba(226,58,18,.42)}
.btn--primary:active{transform:translateY(0);filter:brightness(.96)}
.btn--ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--brand-1);color:var(--brand-deep);transform:translateY(-1px)}
.btn--soft{background:var(--surface-2);color:var(--brand-deep);border-color:rgba(255,90,43,.2)}
.btn--soft:hover{background:#ffe6d8;transform:translateY(-1px)}
.btn--sm{height:38px;padding:0 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none!important;box-shadow:none}
.btn.is-loading{pointer-events:none;opacity:.85}
.btn.is-loading::after{
  content:"";width:14px;height:14px;border-radius:50%;
  border:2px solid rgba(255,255,255,.5);border-top-color:#fff;
  animation:spin .8s linear infinite;
}
.btn--ghost.is-loading::after{border-color:rgba(226,58,18,.3);border-top-color:var(--brand-deep)}
@keyframes spin{to{transform:rotate(360deg)}}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-deep);
  text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
  text-decoration-color:rgba(226,58,18,.35);
  transition:gap .2s var(--ease),text-decoration-color .2s var(--ease);
}
.link-more:hover{gap:10px;text-decoration-color:var(--brand-deep)}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;
  font-variant-numeric:tabular-nums;
}
.badge--data{background:var(--surface-2);color:var(--brand-deep);border:1px solid rgba(255,90,43,.2)}
.badge--tag{background:rgba(20,200,184,.1);color:var(--accent-deep)}
.badge--tag.is-brand{background:rgba(255,90,43,.1);color:var(--brand-deep)}
.badge--tag.is-ink{background:rgba(74,65,96,.1);color:var(--ink-2)}
.badge--tag.is-ok{background:rgba(31,169,113,.12);color:#17795a}
.badge--status{background:rgba(31,169,113,.12);color:#17795a}
.dot-pulse{width:6px;height:6px;border-radius:50%;background:var(--success);position:relative}
.dot-pulse::after{
  content:"";position:absolute;inset:-4px;border-radius:50%;
  border:1px solid rgba(31,169,113,.4);
  animation:pulse 2s var(--ease) infinite;
}
@keyframes pulse{0%{transform:scale(.6);opacity:.9}70%{transform:scale(1.3);opacity:0}100%{opacity:0}}

/* ============ 面包屑 ============ */
.page-top{padding:26px 0 4px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-3);flex-wrap:wrap}
.breadcrumb a{color:var(--ink-3)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--ink);font-weight:700;max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ Hero 大图 ============ */
.hero-wrap{padding:20px 0 0}
.hero-banner{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  aspect-ratio:21/9;
  min-height:280px;
  background:#241733;
  box-shadow:var(--sh-3);
}
.hero-banner img{width:100%;height:100%;object-fit:cover}
.hero-banner__mask{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(27,18,48,.12) 0%,rgba(27,18,48,.55) 58%,rgba(27,18,48,.88) 100%);
}
.hero-banner__body{position:absolute;left:0;right:0;bottom:0;padding:40px 44px;color:#fff}
.hero-banner__body h1{
  color:#fff;font-size:40px;font-weight:800;letter-spacing:-.02em;
  max-width:820px;text-shadow:0 2px 18px rgba(27,18,48,.4);
}
.hero-banner__body p{
  margin-top:14px;font-size:16px;color:rgba(255,255,255,.88);
  max-width:700px;
}
.hero-banner__tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.hero-banner__tags .badge{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.28);backdrop-filter:blur(4px)}
.hero-facts{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;margin-top:24px;
}
.fact{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px 18px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.fact:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.28)}
.fact__label{font-size:12.5px;color:var(--ink-3);letter-spacing:.02em}
.fact__value{font-size:16px;font-weight:700;color:var(--ink);margin-top:6px}

/* ============ 折叠面板区 ============ */
.panels{display:flex;flex-direction:column;gap:16px}
.panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.panel:hover{box-shadow:var(--sh-3)}
.panel[open]{border-color:rgba(255,90,43,.26)}
.panel__head{
  display:flex;align-items:center;gap:16px;
  padding:22px 26px;cursor:pointer;
  list-style:none;
  transition:background .22s var(--ease);
}
.panel__head::-webkit-details-marker{display:none}
.panel__head:hover{background:var(--surface-2)}
.panel__index{
  flex:0 0 auto;width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;
  font-size:14px;font-weight:800;font-variant-numeric:tabular-nums;
  color:var(--brand-deep);
  background:var(--surface-2);
  border:1px solid rgba(255,90,43,.28);
}
.panel[open] .panel__index{background:var(--grad);color:#fff;border-color:transparent}
.panel__title{font-size:20px;font-weight:700;color:var(--ink)}
.panel__hint{font-size:13px;color:var(--ink-3);margin-top:4px}
.panel__textwrap{margin-left:auto;display:flex;align-items:center;gap:16px}
.panel__icon{
  position:relative;flex:0 0 auto;width:30px;height:30px;border-radius:50%;
  border:1.5px solid var(--brand-1);background:#fff;
}
.panel__icon::before,.panel__icon::after{
  content:"";position:absolute;left:50%;top:50%;
  background:var(--brand-deep);border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.panel__icon::before{width:12px;height:2px}
.panel__icon::after{width:2px;height:12px}
.panel[open] .panel__icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.panel__body{padding:4px 26px 28px;border-top:1px solid var(--line)}
.panel__grid{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:start;padding-top:26px}
.panel__grid.is-reversed{grid-template-columns:.85fr 1.15fr}
.panel__grid.is-reversed .panel__media{order:-1}
.panel__col h3{font-size:17px;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.panel__col h3::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--accent);flex:0 0 auto}
.panel__col p{font-size:15px;color:var(--ink-2);margin-bottom:14px}
.panel__media{border-radius:var(--r-md);overflow:hidden;box-shadow:var(--sh-1);background:var(--surface-2)}
.panel__media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.panel__media figcaption{font-size:13px;color:var(--ink-3);padding:10px 14px;background:#fff;border-top:1px solid var(--line)}

.num-list{counter-reset:step;display:flex;flex-direction:column;gap:10px}
.num-list li{
  counter-increment:step;
  position:relative;
  padding-left:38px;
  font-size:15px;color:var(--ink-2);
  line-height:1.7;
}
.num-list li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:2px;
  width:26px;height:26px;border-radius:8px;
  display:grid;place-items:center;
  font-size:11.5px;font-weight:700;
  font-variant-numeric:tabular-nums;
  color:var(--brand-deep);
  background:var(--surface-2);
  border:1px solid rgba(255,90,43,.22);
}
.dot-list{display:flex;flex-direction:column;gap:10px}
.dot-list li{
  position:relative;padding-left:20px;
  font-size:15px;color:var(--ink-2);line-height:1.7;
}
.dot-list li::before{
  content:"";position:absolute;left:0;top:10px;
  width:7px;height:7px;border-radius:2px;
  background:var(--accent);
}
.note-line{
  margin-top:16px;
  background:var(--surface-2);
  border-left:3px solid var(--accent);
  border-radius:var(--r-sm);
  padding:12px 16px;
  font-size:14px;color:var(--ink-2);
}
.note-line strong{color:var(--ink)}

/* ============ 要点图文两栏 ============ */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
}
.split.is-reversed .split__media{order:-1}
.split__media{
  border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-3);background:var(--surface-2);
}
.split__media img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .5s var(--ease)}
.split__media:hover img{transform:scale(1.03)}
.split__body h2{font-size:28px;margin-bottom:16px;display:flex;align-items:center;gap:12px}
.split__body h2::before{content:"";width:4px;height:24px;border-radius:3px;background:var(--grad);flex:0 0 auto}
.split__body p{font-size:15.5px;margin-bottom:14px}
.mini-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:22px}
.mini-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:16px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.26)}
.mini-card__t{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:6px}
.mini-card__d{font-size:13.5px;color:var(--ink-3);line-height:1.65}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.faq-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 26px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.faq-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.26)}
.faq-card__q{display:flex;gap:12px;font-size:17px;font-weight:700;color:var(--ink);margin-bottom:12px}
.faq-card__q span{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:grid;place-items:center;font-size:12px;font-weight:800;
  color:var(--accent-deep);background:rgba(20,200,184,.12);
}
.faq-card__a{font-size:15px;color:var(--ink-2)}

/* ============ 相关分类 ============ */
.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.related-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:rgba(255,90,43,.28)}
.related-card__no{
  width:30px;height:30px;border-radius:50%;
  display:grid;place-items:center;
  font-size:13px;font-weight:800;
  color:var(--brand-deep);
  border:1px solid rgba(255,90,43,.32);
  background:linear-gradient(#fff,#fff) padding-box,var(--grad) border-box;
  margin-bottom:14px;
}
.related-card__t{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:8px}
.related-card__d{font-size:13.5px;color:var(--ink-3);flex:1;line-height:1.7}
.related-card__go{margin-top:16px;font-size:13.5px;font-weight:600;color:var(--brand-deep);display:inline-flex;gap:6px;align-items:center;transition:gap .2s var(--ease)}
.related-card:hover .related-card__go{gap:10px}
.related-card.is-current{border-color:rgba(20,200,184,.4);background:linear-gradient(180deg,rgba(20,200,184,.06),#fff)}

/* ============ 页尾 CTA ============ */
.cta-band{
  background:var(--surface-2);
  border:1px solid rgba(255,90,43,.16);
  border-radius:var(--r-lg);
  padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band__t{font-size:24px;font-weight:700;color:var(--ink)}
.cta-band__d{font-size:14.5px;color:var(--ink-2);margin-top:8px;max-width:640px}
.cta-band__actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.site-footer{margin-top:80px;background:var(--ink);color:#EDE8F5;padding:64px 0 0}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px}
.footer__brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer__brand .brand__text{color:#fff}
.footer__desc{font-size:14px;color:rgba(237,232,245,.68);line-height:1.8;max-width:320px}
.footer__social{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.footer__social span{
  font-size:12.5px;color:rgba(237,232,245,.72);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-pill);
  padding:5px 12px;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.footer__social span:hover{border-color:var(--brand-2);color:var(--brand-2)}
.footer__title{font-size:15px;color:#fff;font-weight:700;margin-bottom:16px}
.footer__links{display:flex;flex-direction:column;gap:11px}
.footer__links a{font-size:14px;color:rgba(237,232,245,.72);transition:color .2s var(--ease),transform .2s var(--ease)}
.footer__links a:hover{color:var(--brand-2);transform:translateX(2px)}
.footer__contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(237,232,245,.72)}
.footer__contact strong{color:#fff;font-weight:600;margin-right:8px}
.footer__bottom{
  margin-top:48px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(237,232,245,.6);
}
.footer__bottom nav{display:flex;gap:16px;flex-wrap:wrap}
.footer__bottom nav a{color:rgba(237,232,245,.68)}
.footer__bottom nav a:hover{color:var(--brand-2)}

/* ============ 抽屉 ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(27,18,48,.5);
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease);
  z-index:100;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;
  width:86vw;max-width:380px;
  background:#fff;z-index:110;
  transform:translateX(102%);
  transition:transform .3s var(--ease);
  display:flex;flex-direction:column;
  padding:20px;overflow-y:auto;
  box-shadow:var(--sh-3);
}
.drawer.is-open{transform:translateX(0)}
.drawer__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer__nav{display:flex;flex-direction:column;gap:4px}
.drawer__nav a{
  padding:12px 14px;border-radius:var(--r-md);
  font-size:15px;font-weight:500;color:var(--ink-2);
  transition:background .2s var(--ease),color .2s var(--ease);
}
.drawer__nav a:hover{background:var(--surface-2);color:var(--brand-deep)}
.drawer__nav a.is-active{background:var(--surface-2);color:var(--brand-deep);font-weight:700}
.drawer__search{position:relative;margin:18px 0}
.drawer__search input{
  width:100%;height:44px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;
  padding:0 16px 0 40px;font-size:14px;color:var(--ink);
}
.drawer__search input:focus{outline:none;border-color:var(--brand-1);box-shadow:var(--sh-2)}
.drawer__search .search__icon{left:14px}
.drawer__cta{margin-top:auto;padding-top:20px;display:flex;flex-direction:column;gap:10px}

/* ============ 返回顶部 ============ */
.back-top{
  position:fixed;right:24px;bottom:28px;z-index:70;
  width:44px;height:44px;border-radius:50%;
  background:var(--grad);color:#fff;
  display:grid;place-items:center;
  box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s var(--ease);
}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{filter:brightness(1.05);transform:translateY(-3px)}

/* ============ 提示条 ============ */
.tip-bar{
  display:flex;align-items:flex-start;gap:12px;
  background:#fff;border:1px solid var(--line);border-left:3px solid var(--brand-1);
  border-radius:var(--r-md);padding:14px 18px;
  font-size:14px;color:var(--ink-2);box-shadow:var(--sh-1);
}
.tip-bar strong{color:var(--ink)}
.tip-bar .tip-dot{width:8px;height:8px;border-radius:50%;background:var(--brand-1);margin-top:9px;flex:0 0 auto}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .nav__menu{gap:2px}
  .nav__link{padding:8px 10px;font-size:13.5px}
  .search{width:200px}
}
@media (max-width:1099px){
  .nav__menu{display:none}
  .search{display:none}
  .nav__toggle{display:grid}
  .hero-banner__body h1{font-size:34px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .footer__grid>div:last-child{grid-column:1/-1}
}
@media (max-width:1023px){
  :root{--sec-y:56px}
  .panel__grid,.panel__grid.is-reversed{grid-template-columns:1fr;gap:24px}
  .panel__grid.is-reversed .panel__media{order:0}
  .split{grid-template-columns:1fr;gap:28px}
  .split.is-reversed .split__media{order:0}
  .hero-facts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .mini-cards{grid-template-columns:1fr}
}
@media (max-width:767px){
  :root{--sec-y:44px}
  .container{padding:0 16px}
  .brand__text{font-size:15px;max-width:56vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .hero-banner{aspect-ratio:auto;display:flex;flex-direction:column;min-height:0}
  .hero-banner img{aspect-ratio:16/10;height:auto}
  .hero-banner__mask{display:none}
  .hero-banner__body{position:static;padding:24px 20px 26px;background:linear-gradient(135deg,#2A1B3D 0%,#1B1230 100%)}
  .hero-banner__body h1{font-size:27px}
  .hero-banner__body p{font-size:14.5px}
  .section__head h2{font-size:23px}
  .section__head{align-items:flex-start}
  .panel__head{padding:16px 16px;gap:12px;align-items:flex-start}
  .panel__title{font-size:17px}
  .panel__hint{display:none}
  .panel__body{padding:2px 16px 20px}
  .faq-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .cta-band{padding:26px 20px;flex-direction:column;align-items:flex-start}
  .cta-band__t{font-size:20px}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn{flex:1}
  .footer__grid{grid-template-columns:1fr;gap:26px}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .split__body h2{font-size:22px}
  .back-top{right:16px;bottom:18px}
  .panel__textwrap{margin-left:0}
}
@media (max-width:520px){
  .hero-facts{grid-template-columns:1fr 1fr;gap:12px}
  .fact{padding:13px 14px}
  .fact__value{font-size:14.5px}
  .btn{height:42px;padding:0 18px;font-size:14.5px}
  .hero-banner__body h1{font-size:24px}
  .section__head h2{font-size:21px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}