/* roulang page: index */
:root{
  --bg-900:#08120F;
  --bg-800:#0C1A17;
  --surface:#10231F;
  --surface-2:#16302A;
  --brand-500:#2FD4B4;
  --brand-400:#5FE6CC;
  --brand-700:#17A08A;
  --accent-warm:#E7B15E;
  --text-100:#EAF3F0;
  --text-300:#A9BFB9;
  --text-500:#7C948E;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(47,212,180,.35);
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --shadow-card:0 18px 44px -22px rgba(0,0,0,.65);
  --glass-bg:rgba(255,255,255,.055);
  --glass-line:1px solid rgba(255,255,255,.12);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;
  background:var(--bg-900);
  color:var(--text-100);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none;transition:color .2s ease}
img{max-width:100%;height:auto;display:block}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font-family:inherit;color:inherit}
strong,b{font-weight:700}
:focus-visible{outline:2px solid rgba(95,230,204,.9);outline-offset:3px;border-radius:4px}
::selection{background:rgba(47,212,180,.28);color:#fff}

/* ========== Foundation 默认样式覆盖 ========== */
.button{border-radius:var(--r-btn);background:var(--brand-500);color:#062018;font-family:var(--font-cn);font-weight:600;letter-spacing:0;transition:all .18s ease}
.button:hover,.button:focus{background:var(--brand-400);color:#062018}
.menu{background:transparent;border:0}
.menu a{color:var(--text-300)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:none;color:var(--text-100)}
.top-bar,.top-bar-left,.top-bar-right{background:transparent;color:inherit}
.accordion{background:transparent;border:0}
.accordion-item{background:transparent;color:inherit}
.accordion-title{border:0;background:transparent;color:var(--text-100)}
.accordion-content{border:0;background:transparent;color:var(--text-300)}
input[type="text"],input[type="search"],input[type="email"],input[type="password"],input[type="tel"],textarea,select{
  box-shadow:none;border-radius:var(--r-btn);margin:0;
}
.grid-x{margin-left:-12px;margin-right:-12px}
.grid-x > .cell{padding-left:12px;padding-right:12px;margin-bottom:24px}

/* ========== 容器与板块 ========== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0;position:relative}
.section--alt{background:var(--bg-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:40px;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.section-head h2{font-size:clamp(22px,2.4vw,29px);line-height:1.3;font-weight:650;letter-spacing:.01em}
.section-head .sub{margin-top:10px;font-size:14px;color:var(--text-500);line-height:1.7;max-width:640px}
.section-head .aside-note{font-size:12.5px;color:var(--text-500);display:flex;align-items:center;gap:8px;letter-spacing:.02em}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.16em;color:var(--brand-400);
  text-transform:uppercase;margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand-500);display:block}

/* ========== 按钮体系 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
  min-width:44px;
}
.btn--primary{
  background:var(--brand-500);color:#062018;
  box-shadow:0 0 0 1px rgba(47,212,180,.45),0 12px 28px -10px rgba(47,212,180,.45);
}
.btn--primary:hover{background:var(--brand-400);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(95,230,204,.6),0 16px 34px -12px rgba(47,212,180,.6)}
.btn--primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(47,212,180,.45),0 6px 16px -10px rgba(47,212,180,.5)}
.btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--text-100)}
.btn--ghost:hover{border-color:var(--brand-500);color:var(--brand-400);box-shadow:inset 0 0 22px rgba(47,212,180,.14);transform:translateY(-1px)}
.btn--ghost:active{transform:translateY(1px)}
.btn--sm{height:38px;padding:0 16px;font-size:13.5px;border-radius:10px}
.btn--block{width:100%}

/* ========== 徽章 / 标签 ========== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;
  font-size:12px;line-height:1.6;letter-spacing:.04em;
  background:rgba(47,212,180,.12);color:var(--brand-400);
  border:1px solid rgba(47,212,180,.24);
}
.badge--warm{background:rgba(231,177,94,.12);color:var(--accent-warm);border-color:rgba(231,177,94,.3)}
.badge--mute{background:rgba(255,255,255,.05);color:var(--text-300);border-color:var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  font-size:13px;color:var(--text-300);transition:all .2s ease;
}
.tag:hover{border-color:var(--line-strong);color:var(--brand-400)}

/* ========== 玻璃卡 ========== */
.glass{
  background:var(--glass-bg);
  border:var(--glass-line);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--shadow-card);
  border-radius:var(--r-panel);
}

/* ========== 吸顶导航 ========== */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(8,18,15,.9);
  border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,backdrop-filter .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{
  background:rgba(8,18,15,.94);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:0 14px 34px -26px rgba(0,0,0,.95);
  border-bottom-color:var(--line);
}
.brand-row{border-bottom:1px solid var(--line)}
.brand-row__inner{
  display:flex;align-items:center;gap:20px;
  min-height:64px;transition:min-height .25s ease;
}
.site-header.is-scrolled .brand-row__inner{min-height:52px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 36px;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand-400),var(--brand-700));
  color:#052B22;font-weight:700;font-size:16px;letter-spacing:0;
  box-shadow:0 8px 20px -12px rgba(47,212,180,.9);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__text strong{font-size:16px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.brand__text em{font-style:normal;font-size:10.5px;color:var(--text-500);letter-spacing:.24em;margin-top:3px}
.nav-search{
  display:flex;align-items:center;flex:1 1 auto;max-width:420px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);border-radius:999px;
  padding:4px 4px 4px 16px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search:focus-within{border-color:var(--line-strong);box-shadow:0 0 0 3px rgba(47,212,180,.12);background:rgba(255,255,255,.06)}
.nav-search input{
  flex:1 1 auto;background:none;border:0;outline:none;
  font-size:14px;color:var(--text-100);min-height:34px;line-height:34px;height:34px;
}
.nav-search input::placeholder{color:var(--text-500)}
.nav-search button{
  display:inline-flex;align-items:center;gap:6px;
  height:34px;padding:0 16px;border-radius:999px;
  background:rgba(47,212,180,.14);color:var(--brand-400);
  font-size:13px;font-weight:600;transition:background .2s ease,color .2s ease;
}
.nav-search button:hover{background:rgba(47,212,180,.24);color:var(--brand-400)}
.brand-row__actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;margin-left:auto}
.ghost-link{font-size:14px;color:var(--text-300)}
.ghost-link:hover{color:var(--brand-400)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);align-items:center;justify-content:center;
  color:var(--text-100);font-size:16px;transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--brand-400)}
.channel-row__inner{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:48px;
}
.main-nav{display:flex;align-items:center;gap:4px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
.main-nav::-webkit-scrollbar{display:none}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;
  height:48px;padding:0 14px;font-size:14.5px;color:var(--text-300);
  white-space:nowrap;transition:color .2s ease;
}
.main-nav a:hover{color:var(--text-100)}
.main-nav a.is-active{color:var(--text-100);font-weight:600}
.main-nav a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--brand-500);border-radius:2px;
  box-shadow:0 0 12px rgba(47,212,180,.7);
}
.hot-keys{display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none;padding:8px 0}
.hot-keys::-webkit-scrollbar{display:none}
.hot-keys span.label{font-size:12px;color:var(--text-500);white-space:nowrap;letter-spacing:.08em}
.hot-keys a{
  flex:0 0 auto;font-size:12.5px;padding:4px 12px;border-radius:999px;
  border:1px solid var(--line);color:var(--text-300);white-space:nowrap;
  transition:all .2s ease;
}
.hot-keys a:hover{border-color:var(--line-strong);color:var(--brand-400);background:rgba(47,212,180,.06)}

/* 移动端抽屉 */
.mobile-drawer{
  display:none;position:fixed;inset:0;z-index:120;
  background:rgba(8,18,15,.96);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  padding:20px 20px 40px;overflow-y:auto;
}
.mobile-drawer.is-open{display:block}
.mobile-drawer__top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.mobile-drawer__close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--text-100);font-size:18px;
}
.mobile-drawer .nav-search{max-width:none;margin-bottom:26px}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:26px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 4px;font-size:16px;color:var(--text-300);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand-400)}
.drawer-nav a i{font-size:12px;color:var(--text-500)}
.drawer-title{font-size:12px;letter-spacing:.16em;color:var(--text-500);margin-bottom:12px}
.drawer-keys{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.drawer-keys a{
  padding:8px 14px;border-radius:999px;border:1px solid var(--line);
  font-size:13px;color:var(--text-300);
}

/* ========== Hero ========== */
.hero{position:relative;overflow:hidden;isolation:isolate;background:var(--bg-900)}
.hero__bg{
  position:absolute;inset:0;z-index:-2;
  background-image:url(/assets/images/backpic/back-1.webp);
  background-size:cover;background-position:center;
}
.hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(8,18,15,.94) 6%,rgba(8,18,15,.72) 52%,rgba(8,18,15,.55) 100%);
}
.hero__bg::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:repeating-linear-gradient(115deg,rgba(47,212,180,.055) 0 1px,transparent 1px 90px);
  opacity:.9;
}
.hero__inner{padding:76px 0 68px;position:relative}
.hero h1{
  font-size:clamp(28px,4.2vw,44px);
  line-height:1.2;font-weight:700;letter-spacing:.005em;
  max-width:15em;
}
.hero__sub{
  margin-top:20px;font-size:17px;line-height:1.8;color:var(--text-300);
  max-width:34em;
}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero__stats{
  display:flex;flex-wrap:wrap;gap:12px 40px;margin-top:44px;
  padding-top:24px;border-top:1px solid var(--line);
}
.hero__stats li{display:flex;flex-direction:column;gap:2px}
.hero__stats b{font-size:22px;font-weight:700;color:var(--brand-400);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.hero__stats span{font-size:12.5px;color:var(--text-500);letter-spacing:.04em}

.status-panel{padding:24px;border-radius:var(--r-panel)}
.status-panel__title{font-size:15px;font-weight:600;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.status-panel__title::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand-500);box-shadow:0 0 10px var(--brand-500)}
.status-list{display:flex;flex-direction:column;gap:2px}
.status-list li{
  display:flex;align-items:center;gap:12px;
  padding:12px 12px;border-radius:12px;
  background:rgba(8,18,15,.35);
  border:1px solid rgba(255,255,255,.05);
  margin-bottom:8px;
}
.status-list li:last-child{margin-bottom:0}
.status-list .dot{width:8px;height:8px;border-radius:50%;flex:0 0 8px}
.dot--ok{background:var(--brand-500);box-shadow:0 0 10px rgba(47,212,180,.8)}
.dot--warm{background:var(--accent-warm);box-shadow:0 0 10px rgba(231,177,94,.7)}
.status-list div{display:flex;flex-direction:column;gap:2px;flex:1 1 auto;min-width:0}
.status-list b{font-size:14px;font-weight:600;line-height:1.4}
.status-list small{font-size:12px;color:var(--text-500);line-height:1.5}
.status-list em{font-style:normal;font-size:12px;color:var(--brand-400);white-space:nowrap}
.status-panel__foot{margin-top:16px;padding-top:16px;border-top:1px solid rgba(255,255,255,.08);display:flex;align-items:center;gap:10px}
.status-panel__foot p{font-size:12px;color:var(--text-500);line-height:1.6}

/* ========== 指标看板 ========== */
.kpi-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;height:100%;display:flex;flex-direction:column;
  transition:border-color .22s ease,transform .22s ease;
}
.kpi-card:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.kpi-card__label{font-size:13px;color:var(--text-300);letter-spacing:.02em}
.kpi-card__value{
  font-size:clamp(32px,3.4vw,46px);font-weight:700;line-height:1.1;
  margin:12px 0 10px;font-variant-numeric:tabular-nums;letter-spacing:-.02em;
  color:var(--text-100);
}
.kpi-card__value span{font-size:16px;font-weight:600;color:var(--text-300);margin-left:4px}
.kpi-card__foot{margin-top:auto;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.kpi-card__note{font-size:12px;color:var(--text-500);line-height:1.6}

/* ========== 服务矩阵 ========== */
.svc-card{
  position:relative;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;height:100%;display:flex;flex-direction:column;
  transition:border-color .24s ease,transform .24s ease,background .24s ease;
  overflow:hidden;
}
.svc-card::after{
  content:"";position:absolute;left:0;top:0;height:2px;width:0;
  background:linear-gradient(90deg,var(--brand-500),transparent);
  transition:width .35s ease;
}
.svc-card:hover{border-color:var(--line-strong);transform:translateY(-3px);background:var(--surface-2)}
.svc-card:hover::after{width:64%}
.svc-card__num{
  font-size:12px;letter-spacing:.18em;color:var(--accent-warm);
  font-variant-numeric:tabular-nums;margin-bottom:14px;display:block;
}
.svc-card h3{font-size:19px;line-height:1.45;font-weight:600;margin-bottom:10px}
.svc-card p{font-size:14px;color:var(--text-300);line-height:1.8;margin-bottom:18px}
.svc-card__link{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;color:var(--brand-400);font-weight:600;
  transition:gap .2s ease,color .2s ease;
}
.svc-card__link:hover{gap:11px;color:var(--brand-400)}
.svc-card--feature{padding:0;overflow:hidden}
.svc-card--feature .svc-card__body{padding:28px}
.svc-card__media{
  aspect-ratio:16/10;overflow:hidden;border-radius:14px 14px 0 0;background:var(--surface-2);
}
.svc-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.svc-card:hover .svc-card__media img{transform:scale(1.03)}
.svc-cta-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  margin-top:8px;padding:26px 30px;border-radius:var(--r-panel);
  background:linear-gradient(100deg,rgba(47,212,180,.14),rgba(22,48,42,.5) 60%);
  border:1px solid var(--line-strong);
}
.svc-cta-bar h3{font-size:19px;font-weight:600;margin-bottom:6px}
.svc-cta-bar p{font-size:14px;color:var(--text-300)}

/* ========== 对比区 ========== */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{border-radius:var(--r-panel);padding:28px;border:1px solid var(--line);background:var(--surface)}
.compare-col--before{opacity:.86}
.compare-col--after{
  border-color:var(--line-strong);
  background:linear-gradient(180deg,rgba(47,212,180,.09),rgba(16,35,31,.9));
  box-shadow:0 22px 50px -34px rgba(47,212,180,.7);
}
.compare-col__title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px}
.compare-col__title h3{font-size:18px;font-weight:600}
.compare-item{margin-bottom:22px}
.compare-item:last-child{margin-bottom:0}
.compare-item__head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:8px}
.compare-item__head b{font-size:14.5px;font-weight:600}
.compare-item__head em{font-style:normal;font-size:12.5px;color:var(--text-500);font-variant-numeric:tabular-nums}
.compare-item p{font-size:13.5px;color:var(--text-300);line-height:1.75;margin-bottom:10px}
.bar{height:6px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden}
.bar span{display:block;height:100%;border-radius:999px;background:rgba(255,255,255,.22)}
.compare-col--after .bar span{background:linear-gradient(90deg,var(--brand-700),var(--brand-400));box-shadow:0 0 12px rgba(47,212,180,.6)}

/* ========== 资讯列表 ========== */
.link-more{font-size:13.5px;color:var(--brand-400);font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease}
.link-more:hover{gap:11px}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;transition:border-color .22s ease,transform .22s ease;
}
.news-card:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.news-card .badge{align-self:flex-start;margin-bottom:14px}
.news-card h3{
  font-size:16.5px;line-height:1.55;font-weight:600;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card h3 a:hover{color:var(--brand-400)}
.news-card p{
  font-size:13.5px;color:var(--text-300);line-height:1.75;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:14px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--text-500);font-variant-numeric:tabular-nums;
}
.news-card__meta .arrow{
  width:30px;height:30px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--brand-400);font-size:13px;
  transition:all .2s ease;
}
.news-card__meta .arrow:hover{background:rgba(47,212,180,.14);border-color:var(--line-strong);transform:translateX(2px)}
.empty-state{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  padding:32px;border-radius:var(--r-card);
  border:1px dashed rgba(255,255,255,.16);background:rgba(255,255,255,.03);
}
.empty-state p{font-size:14.5px;color:var(--text-300)}

/* ========== FAQ ========== */
.faq-group{
  background:var(--glass-bg);border:var(--glass-line);border-radius:var(--r-panel);
  backdrop-filter:blur(14px) saturate(120%);-webkit-backdrop-filter:blur(14px) saturate(120%);
  overflow:hidden;box-shadow:var(--shadow-card);
}
.faq-item + .faq-item{border-top:1px solid rgba(255,255,255,.08)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  width:100%;min-height:60px;padding:16px 26px;text-align:left;
  font-size:15.5px;font-weight:500;color:var(--text-100);line-height:1.6;
  transition:color .2s ease,background .2s ease;
}
.faq-q:hover{color:var(--brand-400);background:rgba(255,255,255,.025)}
.faq-ico{position:relative;width:16px;height:16px;flex:0 0 16px;transition:transform .28s ease}
.faq-ico::before,.faq-ico::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-400);
  border-radius:2px;transition:transform .28s ease,opacity .28s ease;
}
.faq-ico::before{width:14px;height:2px;transform:translate(-50%,-50%)}
.faq-ico::after{width:2px;height:14px;transform:translate(-50%,-50%)}
.faq-item.is-open .faq-ico{transform:rotate(180deg)}
.faq-item.is-open .faq-ico::after{opacity:0;transform:translate(-50%,-50%) scaleY(0)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease}
.faq-item.is-open .faq-a{grid-template-rows:1fr}
.faq-a__inner{overflow:hidden}
.faq-a p{
  padding:0 26px 22px;font-size:14.5px;line-height:1.85;color:var(--text-300);max-width:60em;
}

/* ========== 表单区 ========== */
.contact-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:32px;align-items:start}
.form-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-panel);
  padding:32px;
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field--full{grid-column:1 / -1}
.field label{font-size:13.5px;color:var(--text-300);letter-spacing:.02em}
.field label .req{color:var(--accent-warm);margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;min-height:46px;padding:11px 14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);border-radius:var(--r-btn);
  font-size:15px;color:var(--text-100);outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{min-height:112px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-500)}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand-500);
  box-shadow:0 0 0 3px rgba(47,212,180,.16);
  background:rgba(255,255,255,.06);
}
.field select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%237C948E' d='M6 8 0 0h12z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:38px}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-300);line-height:1.7}
.check-row input{width:16px;height:16px;flex:0 0 16px;margin-top:4px;accent-color:var(--brand-500);min-height:0}
.form-actions{margin-top:24px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.form-hint{font-size:12.5px;color:var(--text-500)}
.trust-panel{display:flex;flex-direction:column;gap:14px}
.trust-item{
  display:flex;gap:14px;align-items:flex-start;
  padding:18px 20px;border-radius:var(--r-card);
  background:var(--surface);border:1px solid var(--line);
  transition:border-color .2s ease,background .2s ease;
}
.trust-item:hover{border-color:var(--line-strong);background:var(--surface-2)}
.trust-item .ico{
  width:36px;height:36px;flex:0 0 36px;border-radius:11px;
  display:grid;place-items:center;font-size:14px;
  background:rgba(47,212,180,.12);color:var(--brand-400);
}
.trust-item b{display:block;font-size:14.5px;font-weight:600;margin-bottom:4px}
.trust-item p{font-size:13px;color:var(--text-300);line-height:1.7}
.trust-note{
  padding:18px 20px;border-radius:var(--r-card);
  border:1px dashed rgba(255,255,255,.16);background:rgba(255,255,255,.03);
  font-size:13px;color:var(--text-300);line-height:1.8;
}
.trust-note b{color:var(--text-100)}

/* ========== 页脚 ========== */
.site-footer{background:var(--bg-800);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:13.5px;color:var(--text-300);line-height:1.85;max-width:26em}
.footer-contact{margin-top:18px;display:flex;flex-direction:column;gap:8px}
.footer-contact li{font-size:13px;color:var(--text-500);display:flex;gap:8px;align-items:center}
.footer-contact li i{color:var(--brand-400);font-size:12px;width:14px}
.footer-col h4{font-size:13px;letter-spacing:.14em;color:var(--text-500);font-weight:600;margin-bottom:18px;text-transform:uppercase}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:13.5px;color:var(--text-300);line-height:1.7;display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--brand-400);transform:translateX(2px)}
.footer-bottom{
  margin-top:56px;padding:22px 0 26px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:12.5px;color:var(--text-500)}
.footer-bottom .meta{display:flex;gap:20px;flex-wrap:wrap;font-size:12.5px;color:var(--text-500)}

/* ========== 返回顶部 ========== */
.to-top{
  position:fixed;right:22px;bottom:22px;z-index:70;
  width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;
  background:var(--surface-2);border:1px solid var(--line);
  color:var(--brand-400);font-size:15px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,border-color .2s ease;
  box-shadow:var(--shadow-card);
}
.to-top.is-on{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--line-strong)}

/* ========== 动效 ========== */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .26s ease,transform .26s ease}
.js .reveal.is-visible{opacity:1;transform:none}

/* ========== 断点 ========== */
@media (min-width:1440px){
  .container{max-width:1280px;padding:0 40px}
}
@media (max-width:1024px){
  .section{padding:72px 0}
  .hero__inner{padding:56px 0 52px}
  .nav-search{max-width:300px}
  .hot-keys{display:none}
  .channel-row__inner{min-height:52px}
  .compare-wrap{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .form-grid{grid-template-columns:1fr}
}
@media (max-width:1024px){
  .nav-toggle{display:inline-flex}
  .nav-search{display:none}
  .brand-row__actions .ghost-link{display:none}
  .brand-row__actions .btn{height:40px;padding:0 16px;font-size:14px}
  .channel-row{display:none}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .section{padding:48px 0}
  .hero__inner{padding:44px 0 44px}
  .hero h1{font-size:clamp(25px,7vw,32px)}
  .hero__sub{font-size:15px;margin-top:16px}
  .hero__cta{gap:10px;margin-top:24px}
  .hero__cta .btn{flex:1 1 auto;min-width:140px}
  .hero__stats{gap:14px 24px;margin-top:30px}
  .hero__stats b{font-size:19px}
  .brand__text strong{font-size:14.5px}
  .brand__text em{font-size:9.5px;letter-spacing:.18em}
  .brand__mark{width:32px;height:32px;flex:0 0 32px;font-size:14px;border-radius:10px}
  .brand-row__actions{margin-left:auto;gap:8px}
  .brand-row__actions .btn{padding:0 12px;font-size:13px;height:38px}
  .section-head{margin-bottom:26px;gap:14px}
  .section-head h2{font-size:21px}
  .kpi-card,.svc-card,.news-card,.form-panel{padding:20px}
  .svc-card--feature .svc-card__body{padding:20px}
  .compare-col{padding:22px}
  .faq-q{padding:14px 18px;font-size:14.5px}
  .faq-a p{padding:0 18px 18px;font-size:14px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .site-footer{padding:44px 0 0}
  .footer-bottom{margin-top:36px;justify-content:flex-start}
  .svc-cta-bar{padding:22px}
  .to-top{right:14px;bottom:14px;width:42px;height:42px}
  .form-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: article */
:root{
  --bg-900:#08120F;
  --bg-800:#0C1A17;
  --surface:#10231F;
  --surface-2:#16302A;
  --brand-500:#2FD4B4;
  --brand-400:#5FE6CC;
  --brand-700:#17A08A;
  --accent-warm:#E7B15E;
  --text-100:#EAF3F0;
  --text-300:#A9BFB9;
  --text-500:#7C948E;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(47,212,180,.35);
  --glass-bg:rgba(255,255,255,.055);
  --glass-line:1px solid rgba(255,255,255,.12);
  --glass-shadow:0 18px 44px -22px rgba(0,0,0,.65);
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-img:14px;
  --container:1200px;
  --ease:cubic-bezier(.22,.68,.32,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text-100);
  background-color:var(--bg-900);
  background-image:
    radial-gradient(900px 520px at 82% -8%, rgba(47,212,180,.13), transparent 62%),
    radial-gradient(680px 420px at 4% 12%, rgba(23,160,138,.10), transparent 66%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0;}
:focus-visible{outline:2px solid rgba(95,230,204,.9);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{padding:0 32px;}}
@media (max-width:640px){.container{padding:0 16px;}}

/* Foundation 默认样式覆盖 */
.button{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  margin:0;padding:12px 22px;min-height:44px;
  font-family:inherit;font-size:15px;font-weight:600;line-height:1.2;
  border-radius:var(--r-btn);border:1px solid transparent;
  background:var(--brand-500);color:#062018;
  box-shadow:0 0 0 1px rgba(47,212,180,.45),0 12px 28px -10px rgba(47,212,180,.45);
  transition:background .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease);
}
.button:hover,.button:focus{background:var(--brand-400);color:#062018;transform:translateY(-1px);}
.button:active{transform:translateY(0);}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:none;color:var(--text-300);}
.menu{background:transparent;margin:0;padding:0;}
.menu a{padding:0;color:inherit;}
.top-bar{background:transparent;padding:0;margin:0;}
.accordion{background:transparent;border:0;margin:0;}
.accordion-item{border:0;}

/* 品牌与按钮 */
.brand{display:inline-flex;align-items:center;gap:11px;}
.brand__mark{
  width:38px;height:38px;flex:0 0 38px;border-radius:11px;
  display:grid;place-items:center;
  font-size:17px;font-weight:700;color:#062018;
  background:linear-gradient(150deg,var(--brand-400),var(--brand-700));
  box-shadow:0 8px 20px -10px rgba(47,212,180,.85);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__text strong{font-size:16px;font-weight:700;letter-spacing:.4px;color:var(--text-100);}
.brand__text em{font-style:normal;font-size:11px;letter-spacing:2.4px;color:var(--brand-400);text-transform:uppercase;}
.brand:hover .brand__text strong{color:var(--brand-400);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;
  font-size:15px;font-weight:600;line-height:1.2;
  border-radius:var(--r-btn);border:1px solid transparent;
  transition:all .22s var(--ease);
}
.btn--primary{
  background:var(--brand-500);color:#062018;
  box-shadow:0 0 0 1px rgba(47,212,180,.45),0 12px 28px -10px rgba(47,212,180,.45);
}
.btn--primary:hover{background:var(--brand-400);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(95,230,204,.6),0 16px 32px -12px rgba(47,212,180,.6);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{
  background:transparent;color:var(--brand-400);border-color:var(--line-strong);
}
.btn--ghost:hover{border-color:var(--brand-500);color:var(--brand-400);box-shadow:inset 0 0 22px -12px rgba(47,212,180,.9);transform:translateY(-1px);}
.btn--sm{min-height:38px;padding:8px 16px;font-size:14px;border-radius:10px;}

/* 吸顶头部 */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(8,18,15,.82);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--line);
  transition:box-shadow .28s var(--ease),background .28s var(--ease);
}
.site-header.is-compact{box-shadow:0 14px 30px -22px rgba(0,0,0,.9);background:rgba(8,18,15,.94);}
.header-top{display:flex;align-items:center;gap:20px;padding:13px 0;transition:padding .26s var(--ease);}
.site-header.is-compact .header-top{padding:7px 0;}
.header-bottom{
  display:flex;align-items:center;gap:18px;
  padding:0 0 11px;
  transition:padding .26s var(--ease);
}
.site-header.is-compact .header-bottom{padding-bottom:7px;}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
.header-contact{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--text-500);}
.header-contact i{color:var(--brand-400);}
.nav-search{
  flex:1 1 auto;max-width:360px;margin-left:8px;
  display:flex;align-items:center;gap:6px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);border-radius:999px;
  padding:4px 4px 4px 16px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.nav-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(47,212,180,.16);}
.nav-search input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;
  font-size:13.5px;color:var(--text-100);padding:7px 0;outline:none;
}
.nav-search input::placeholder{color:var(--text-500);}
.nav-search button{
  flex:0 0 auto;width:32px;height:32px;border-radius:50%;
  display:grid;place-items:center;font-size:12.5px;
  background:rgba(47,212,180,.14);color:var(--brand-400);
  transition:background .22s var(--ease),color .22s var(--ease);
}
.nav-search button:hover{background:var(--brand-500);color:#062018;}
.main-nav{display:flex;align-items:center;gap:26px;flex-wrap:wrap;}
.main-nav a{
  position:relative;font-size:14px;font-weight:500;color:var(--text-300);
  padding:8px 0;line-height:1.2;transition:color .22s var(--ease);
}
.main-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand-500);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .26s var(--ease);
}
.main-nav a:hover{color:var(--text-100);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.is-active{color:var(--brand-400);}
.main-nav a.is-active::after{transform:scaleX(1);}
.hot-tags{display:flex;align-items:center;gap:8px;margin-left:auto;overflow-x:auto;scrollbar-width:none;}
.hot-tags::-webkit-scrollbar{display:none;}
.hot-tags span{font-size:12px;color:var(--text-500);white-space:nowrap;}
.hot-tags a{
  white-space:nowrap;font-size:12px;line-height:1;
  padding:7px 12px;border-radius:999px;
  color:var(--text-300);background:rgba(255,255,255,.04);
  border:1px solid var(--line);transition:all .22s var(--ease);
}
.hot-tags a:hover{color:var(--brand-400);border-color:var(--line-strong);background:rgba(47,212,180,.08);}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);color:var(--text-100);}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--brand-400);}
.nav-drawer{
  display:none;border-top:1px solid var(--line);
  padding:16px 0 22px;background:rgba(9,21,18,.98);
}
.nav-drawer.is-open{display:block;}
.nav-drawer .nav-search{max-width:none;margin:0 0 14px;}
.nav-drawer .main-nav{flex-direction:column;align-items:flex-start;gap:2px;width:100%;}
.nav-drawer .main-nav a{width:100%;padding:11px 0;border-bottom:1px solid var(--line);font-size:15px;}
.nav-drawer .main-nav a::after{display:none;}
.nav-drawer .hot-tags{margin:14px 0 0;flex-wrap:wrap;}
.read-progress{position:absolute;left:0;right:0;bottom:0;height:2px;background:transparent;pointer-events:none;}
.read-progress span{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--brand-700),var(--brand-400));
  box-shadow:0 0 12px rgba(47,212,180,.85);
  transition:width .1s linear;
}

/* 面包屑 */
.crumbs{padding:26px 0 0;font-size:13px;color:var(--text-500);}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li:not(:last-child)::after{content:"›";color:var(--text-500);opacity:.7;}
.crumbs a:hover{color:var(--brand-400);}
.crumbs [aria-current]{color:var(--text-300);}

/* 文章头部 */
.article-head{
  position:relative;
  padding:30px 0 34px;
  border-bottom:1px solid var(--line);
}
.article-head::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:linear-gradient(115deg,rgba(47,212,180,.10),transparent 42%,rgba(231,177,94,.06));
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 92%);
}
.channel-badge{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.4px;
  padding:6px 14px;border-radius:999px;
  color:var(--brand-400);
  background:rgba(47,212,180,.09);
  border:1px solid var(--line-strong);
}
.channel-badge i{font-size:11px;}
.article-title{
  margin:16px 0 0;
  font-size:clamp(26px,3.6vw,42px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:-.2px;
  color:var(--text-100);
  overflow-wrap:break-word;
  max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:18px;font-size:13px;color:var(--text-500);
  font-variant-numeric:tabular-nums;
}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta i{font-size:12px;color:var(--brand-700);}
.article-meta .dot{color:rgba(255,255,255,.22);}

/* 正文布局 */
.article-layout{padding:44px 0 8px;}
.article-layout > .cell{padding-left:0;padding-right:0;}
.article-column{max-width:760px;}
.article-body{
  font-size:16px;line-height:1.85;color:var(--text-300);
  overflow-wrap:break-word;
}
.article-body p{margin:0 0 1.25em;}
.article-body h2{
  position:relative;
  margin:2em 0 .75em;padding-left:16px;
  font-size:26px;line-height:1.35;font-weight:700;color:var(--text-100);
  scroll-margin-top:140px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.34em;
  width:3px;height:.95em;border-radius:2px;
  background:var(--brand-500);box-shadow:0 0 12px rgba(47,212,180,.75);
}
.article-body h3{
  margin:1.7em 0 .6em;
  font-size:19px;line-height:1.45;font-weight:600;color:var(--text-100);
  scroll-margin-top:140px;
}
.article-body h4{margin:1.5em 0 .5em;font-size:16px;font-weight:600;color:var(--text-100);}
.article-body strong{color:var(--text-100);font-weight:600;}
.article-body a{color:var(--brand-400);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--brand-500);}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:0;}
.article-body ul li{
  position:relative;padding-left:20px;margin:.45em 0;line-height:1.8;
}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;
  width:6px;height:6px;border-radius:50%;
  background:var(--brand-500);box-shadow:0 0 8px rgba(47,212,180,.6);
}
.article-body ol{list-style:decimal;padding-left:1.4em;}
.article-body ol li{margin:.45em 0;line-height:1.8;padding-left:4px;}
.article-body ol li::marker{color:var(--brand-400);font-variant-numeric:tabular-nums;}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;
  border-left:3px solid var(--brand-500);
  background:rgba(255,255,255,.045);
  border-radius:0 12px 12px 0;
  color:var(--text-300);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;border-radius:var(--r-img);
  margin:1.7em 0;border:1px solid var(--line);
}
.article-body figure{margin:1.7em 0;}
.article-body figcaption{
  margin-top:10px;text-align:center;
  font-size:13px;color:var(--text-500);
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.2em 0;}
.article-body code{
  font-size:.92em;padding:2px 6px;border-radius:6px;
  background:rgba(47,212,180,.10);color:var(--brand-400);
}
.empty-state{
  padding:38px 26px;border-radius:var(--r-panel);
  background:rgba(255,255,255,.04);
  border:1px dashed var(--line-strong);
  text-align:center;
}
.empty-state p{font-size:17px;color:var(--text-100);margin-bottom:6px;font-weight:600;}
.empty-state .hint{font-size:14px;color:var(--text-500);font-weight:400;margin-bottom:18px;}

/* 目录 */
.article-aside{padding-top:6px;}
.toc{
  position:sticky;top:112px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:18px 18px 20px;
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--glass-shadow);
}
.toc summary{
  display:none;cursor:pointer;font-size:14px;font-weight:600;color:var(--text-100);
  list-style:none;
}
.toc summary::-webkit-details-marker{display:none;}
.toc summary::after{content:"＋";float:right;color:var(--brand-400);}
.toc[open] summary::after{content:"－";}
.toc__title{
  display:block;font-size:12px;letter-spacing:2px;color:var(--text-500);
  margin-bottom:12px;text-transform:uppercase;
}
.toc-list{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--line);}
.toc-list li a{
  display:block;padding:7px 0 7px 14px;
  font-size:13.5px;line-height:1.55;color:var(--text-500);
  border-left:2px solid transparent;margin-left:-1px;
  transition:all .2s var(--ease);
}
.toc-list li a:hover{color:var(--text-100);}
.toc-list li a.is-active{
  color:var(--brand-400);border-left-color:var(--brand-500);
  background:linear-gradient(90deg,rgba(47,212,180,.10),transparent);
}
.toc-list li.toc-item--sub a{padding-left:26px;font-size:13px;}

/* 标签与相关推荐 */
.article-tags{display:flex;flex-wrap:wrap;gap:9px;margin:38px 0 0;padding-top:26px;border-top:1px solid var(--line);}
.article-tags a{
  font-size:13px;padding:7px 14px;border-radius:999px;
  color:var(--text-300);background:rgba(255,255,255,.04);
  border:1px solid var(--line);transition:all .22s var(--ease);
}
.article-tags a:hover{color:var(--brand-400);border-color:var(--line-strong);background:rgba(47,212,180,.08);}

.related{padding:64px 0 0;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:24px;}
.section-head h2{font-size:26px;line-height:1.3;font-weight:700;color:var(--text-100);}
.section-head p{font-size:14px;color:var(--text-500);margin-top:8px;}
.section-head .more{font-size:14px;color:var(--brand-400);display:inline-flex;align-items:center;gap:7px;}
.section-head .more:hover{gap:11px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.rel-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;
  transition:border-color .26s var(--ease),transform .26s var(--ease);
}
.rel-card:hover{border-color:var(--line-strong);transform:translateY(-3px);}
.rel-card__media{aspect-ratio:16/10;overflow:hidden;background:var(--surface-2);}
.rel-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.rel-card:hover .rel-card__media img{transform:scale(1.04);}
.rel-card__body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1;}
.rel-card__body h3{font-size:17px;line-height:1.5;font-weight:600;color:var(--text-100);}
.rel-card:hover .rel-card__body h3{color:var(--brand-400);}
.rel-card__body p{margin-top:9px;font-size:13.5px;line-height:1.75;color:var(--text-500);}
.rel-card__foot{margin-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-500);}
.rel-card__foot i{color:var(--brand-400);transition:transform .26s var(--ease);}
.rel-card:hover .rel-card__foot i{transform:translateX(4px);}

/* CTA 条 */
.cta-strip{margin:72px 0 0;}
.cta-inner{
  position:relative;overflow:hidden;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  padding:34px 36px;border-radius:var(--r-panel);
  background:
    linear-gradient(120deg,rgba(47,212,180,.16),rgba(8,18,15,.2) 58%),
    var(--surface-2);
  border:1px solid var(--line-strong);
  box-shadow:var(--glass-shadow);
}
.cta-inner::after{
  content:"";position:absolute;right:-60px;top:-70px;
  width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,212,180,.24),transparent 68%);
  pointer-events:none;
}
.cta-inner h2{font-size:24px;line-height:1.35;font-weight:700;color:var(--text-100);}
.cta-inner p{margin-top:9px;font-size:14px;color:var(--text-300);max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:1;}

/* 返回与回到顶部 */
.back-row{padding:38px 0 0;display:flex;flex-wrap:wrap;align-items:center;gap:16px;}
.back-link{display:inline-flex;align-items:center;gap:9px;font-size:14px;color:var(--text-300);}
.back-link:hover{color:var(--brand-400);}
.back-link i{font-size:12px;}
.back-top{
  position:fixed;right:24px;bottom:26px;z-index:110;
  width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(22,48,42,.9);
  border:1px solid var(--line-strong);
  color:var(--brand-400);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .28s var(--ease);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.back-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--brand-500);color:#062018;}

/* 页脚 */
.site-footer{
  margin-top:84px;
  background:linear-gradient(180deg,rgba(12,26,23,.6),rgba(8,18,15,.96));
  border-top:1px solid var(--line);
  padding:56px 0 26px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;}
.footer-brand p{margin:16px 0 18px;font-size:13.5px;line-height:1.8;color:var(--text-500);max-width:340px;}
.footer-contact{display:flex;flex-direction:column;gap:9px;}
.footer-contact li{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--text-500);}
.footer-contact i{margin-top:4px;font-size:12px;color:var(--brand-700);}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-100);margin-bottom:16px;letter-spacing:.4px;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:13.5px;color:var(--text-500);}
.footer-col a:hover{color:var(--brand-400);}
.footer-bottom{
  margin-top:42px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
}
.footer-bottom p{font-size:12.5px;color:var(--text-500);}
.footer-bottom .meta{display:flex;flex-wrap:wrap;gap:18px;font-size:12.5px;color:var(--text-500);}

/* 动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s var(--ease),transform .26s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* 响应式 */
@media (max-width:1024px){
  .nav-search{max-width:240px;}
  .header-contact{display:none;}
  .hot-tags span{display:none;}
  .article-column{max-width:100%;}
  .article-aside{padding-top:0;margin-bottom:8px;}
  .toc{position:static;top:auto;padding:14px 16px;}
  .toc summary{display:block;}
  .toc .toc__title{display:none;}
  .toc[open] .toc-list{margin-top:12px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:860px){
  .nav-search{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .header-bottom{display:none;}
  .site-header{padding-bottom:0;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-inner{padding:26px 22px;}
}
@media (max-width:640px){
  .brand__mark{width:34px;height:34px;flex:0 0 34px;font-size:15px;border-radius:10px;}
  .brand__text strong{font-size:15px;}
  .brand__text em{font-size:10px;letter-spacing:1.8px;}
  .header-top{gap:12px;}
  .header-actions .btn--primary{padding:9px 14px;font-size:13.5px;min-height:40px;}
  .crumbs{padding-top:18px;font-size:12.5px;}
  .article-head{padding:22px 0 26px;}
  .article-title{font-size:25px;}
  .article-meta{font-size:12.5px;gap:8px;}
  .article-layout{padding-top:30px;}
  .article-body{font-size:15.5px;line-height:1.82;}
  .article-body h2{font-size:21px;margin-top:1.8em;}
  .article-body h3{font-size:17px;}
  .related{padding-top:48px;}
  .section-head h2{font-size:21px;}
  .cta-strip{margin-top:52px;}
  .cta-inner h2{font-size:20px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .site-footer{padding:42px 0 22px;margin-top:60px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .back-top{right:16px;bottom:18px;width:42px;height:42px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --bg-900:#08120F;
  --bg-800:#0C1A17;
  --surface:#10231F;
  --surface-2:#16302A;
  --brand-500:#2FD4B4;
  --brand-400:#5FE6CC;
  --brand-700:#17A08A;
  --accent-warm:#E7B15E;
  --text-100:#EAF3F0;
  --text-300:#A9BFB9;
  --text-500:#7C948E;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(47,212,180,.35);
  --glass-bg:rgba(255,255,255,.055);
  --glass-line:rgba(255,255,255,.12);
  --glass-shadow:0 18px 44px -22px rgba(0,0,0,.65);
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-pill:999px;
  --container:1200px;
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-100);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font:inherit;color:inherit;cursor:pointer}
input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand-400);outline-offset:3px;border-radius:6px}
::selection{background:rgba(47,212,180,.28);color:#EAF3F0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* Foundation 默认组件覆盖 */
.button,.button.primary,.button.secondary,.button.success{
  background:var(--brand-500);
  color:#062018;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-weight:600;
  box-shadow:0 0 0 1px rgba(47,212,180,.45),0 12px 28px -10px rgba(47,212,180,.45);
}
.button:hover,.button:focus{background:var(--brand-400);color:#062018}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:none;color:var(--text-100)}
.menu{background:transparent;display:flex;flex-wrap:wrap;gap:6px}
.menu a{color:var(--text-300);padding:8px 12px;border-radius:10px}
.menu a:hover{color:var(--brand-400);background:rgba(47,212,180,.08)}
.accordion{background:transparent;border:0;border-radius:0}
.accordion-item{background:transparent;border:0}
.accordion-title{border:0;background:transparent;color:var(--text-100);padding:0}
.accordion-content{border:0;background:transparent;color:var(--text-300);padding:0}
.top-bar,.top-bar ul{background:transparent;color:var(--text-100)}
.grid-x{margin-left:0;margin-right:0}
.grid-x > .cell{padding-left:0;padding-right:0;min-width:0}
.grid-x.grid-padding-x{margin-left:-12px;margin-right:-12px}
.grid-x.grid-padding-x > .cell{padding-left:12px;padding-right:12px}

/* 顶部导航 */
.site-header{
  position:sticky;
  top:0;
  z-index:200;
  background:rgba(8,18,15,.88);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid transparent;
  transition:background .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.site-header.is-scrolled{
  background:rgba(8,18,15,.96);
  border-bottom-color:var(--line);
  box-shadow:0 18px 44px -22px rgba(0,0,0,.7);
}
.topbar__inner{
  display:flex;
  align-items:center;
  gap:22px;
  height:64px;
  transition:height .22s ease;
}
.site-header.is-scrolled .topbar__inner{height:52px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__mark{
  width:36px;height:36px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,var(--brand-400),var(--brand-700));
  color:#062018;font-weight:700;font-size:17px;line-height:1;
  box-shadow:0 8px 20px -10px rgba(47,212,180,.7);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__text strong{font-size:16px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.brand__text em{font-style:normal;font-size:11px;letter-spacing:.22em;color:var(--text-500);margin-top:3px}
.nav-search{
  position:relative;
  flex:1 1 auto;
  max-width:360px;
  display:flex;
  align-items:center;
  gap:6px;
  height:40px;
  padding:0 5px 0 14px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  transition:border-color .2s, background .2s;
}
.nav-search:focus-within{border-color:var(--brand-500);background:rgba(47,212,180,.06);box-shadow:0 0 0 3px rgba(47,212,180,.14)}
.nav-search input{
  flex:1 1 auto;min-width:0;
  background:transparent;border:0;outline:none;
  font-size:13.5px;color:var(--text-100);
}
.nav-search input::placeholder{color:var(--text-500)}
.nav-search button{
  flex:0 0 auto;
  width:30px;height:30px;border:0;border-radius:9px;
  background:var(--surface-2);color:var(--brand-400);
  display:grid;place-items:center;font-size:12.5px;
  transition:background .18s,color .18s;
}
.nav-search button:hover{background:var(--brand-500);color:#062018}
.topbar__actions{display:flex;align-items:center;gap:14px;margin-left:auto;flex:0 0 auto}
.ghost-link{
  font-size:13.5px;color:var(--text-300);
  padding:8px 2px;border-bottom:1px solid transparent;
  transition:color .18s,border-color .18s;
}
.ghost-link:hover{color:var(--brand-400);border-bottom-color:var(--line-strong)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;
  border:1px solid transparent;border-radius:var(--r-btn);
  font-size:14.5px;font-weight:600;letter-spacing:.01em;
  transition:transform .18s ease,box-shadow .22s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn--primary{
  background:var(--brand-500);color:#062018;
  box-shadow:0 0 0 1px rgba(47,212,180,.45),0 12px 28px -10px rgba(47,212,180,.45);
}
.btn--primary:hover{
  background:var(--brand-400);color:#062018;transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(95,230,204,.55),0 15px 34px -10px rgba(47,212,180,.55);
}
.btn--primary:active{transform:translateY(0);box-shadow:0 0 0 1px rgba(47,212,180,.45),0 6px 16px -8px rgba(47,212,180,.45)}
.btn--ghost{
  background:transparent;color:var(--text-100);
  border-color:var(--line-strong);
}
.btn--ghost:hover{
  color:var(--brand-400);border-color:var(--brand-500);
  box-shadow:inset 0 0 18px rgba(47,212,180,.16);transform:translateY(-1px);
}
.btn--ghost:active{transform:translateY(0)}
.btn--sm{min-height:38px;padding:0 16px;font-size:13.5px}
.nav-toggle{
  display:none;
  width:44px;height:44px;margin-left:auto;
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:rgba(255,255,255,.04);color:var(--brand-400);
  place-items:center;font-size:16px;
  transition:border-color .18s,background .18s;
}
.nav-toggle:hover{border-color:var(--line-strong);background:rgba(47,212,180,.08)}
.navbar{border-top:1px solid var(--line)}
.navbar__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:50px}
.main-nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.main-nav a{
  position:relative;
  display:inline-flex;align-items:center;
  height:50px;padding:0 14px;
  font-size:14px;color:var(--text-300);
  transition:color .18s ease;
  white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;
  background:var(--brand-500);border-radius:2px 2px 0 0;
  transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.main-nav a:hover{color:var(--text-100)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.is-active{color:var(--brand-400);font-weight:600}
.main-nav a.is-active::after{transform:scaleX(1)}
.hotwords{
  display:flex;align-items:center;gap:8px;
  overflow-x:auto;scrollbar-width:none;
  padding:4px 0;
}
.hotwords::-webkit-scrollbar{display:none}
.hotwords__label{font-size:11.5px;letter-spacing:.16em;color:var(--text-500);flex:0 0 auto}
.hotwords a{
  flex:0 0 auto;
  padding:5px 12px;border-radius:var(--r-pill);
  border:1px solid var(--line);
  font-size:12.5px;color:var(--text-300);
  transition:border-color .18s,color .18s,background .18s;
}
.hotwords a:hover{border-color:var(--line-strong);color:var(--brand-400);background:rgba(47,212,180,.08)}
.drawer{
  display:none;
  border-top:1px solid var(--line);
  background:var(--bg-800);
  padding:18px 24px 24px;
}
.drawer.is-open{display:block}
.drawer .nav-search{max-width:none;margin-bottom:18px}
.drawer__nav{display:grid;gap:6px;margin-bottom:18px}
.drawer__nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-btn);
  font-size:14.5px;color:var(--text-300);
  transition:border-color .18s,color .18s,background .18s;
}
.drawer__nav a:hover{border-color:var(--line-strong);color:var(--brand-400);background:rgba(47,212,180,.06)}
.drawer__nav a.is-active{color:var(--brand-400);border-color:var(--line-strong);font-weight:600}
.drawer__hot{display:flex;flex-wrap:wrap;gap:8px}
.drawer__hot a{
  padding:6px 12px;border-radius:var(--r-pill);
  border:1px solid var(--line);font-size:12.5px;color:var(--text-300);
}
.drawer__hot a:hover{color:var(--brand-400);border-color:var(--line-strong)}

/* 频道头部 */
.channel-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:var(--bg-900)}
.channel-hero__bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.30;filter:saturate(85%);
}
.channel-hero__veil{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,18,15,.70) 0%,rgba(8,18,15,.92) 62%,rgba(8,18,15,.99) 100%);
}
.channel-hero__band{
  position:absolute;inset:0;
  background:repeating-linear-gradient(115deg,rgba(47,212,180,.10) 0 1px,transparent 1px 30px);
  opacity:.55;
  -webkit-mask-image:linear-gradient(120deg,#000 0%,transparent 62%);
  mask-image:linear-gradient(120deg,#000 0%,transparent 62%);
}
.channel-hero__inner{position:relative;z-index:2;padding:56px 0 44px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-500);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-300);transition:color .18s}
.breadcrumb a:hover{color:var(--brand-400)}
.breadcrumb span[aria-hidden]{color:var(--text-500);opacity:.7}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);
  background:rgba(47,212,180,.09);
  color:var(--brand-400);
  font-size:12.5px;letter-spacing:.10em;
  margin-bottom:18px;
}
.channel-hero h1{
  font-size:clamp(28px,4.2vw,44px);
  line-height:1.2;
  font-weight:700;
  letter-spacing:-.01em;
  max-width:820px;
  color:var(--text-100);
}
.channel-hero__desc{
  margin-top:18px;
  max-width:700px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--text-300);
}
.anchor-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.anchor-bar a{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);
  background:rgba(255,255,255,.045);
  font-size:13px;color:var(--text-300);
  transition:border-color .18s,color .18s,transform .18s,background .18s;
  font-variant-numeric:tabular-nums;
}
.anchor-bar a:hover{border-color:var(--brand-500);color:var(--brand-400);transform:translateY(-2px);background:rgba(47,212,180,.08)}

/* 板块 */
.section{padding:96px 0;position:relative}
.section--alt{background:var(--bg-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{
  font-size:clamp(22px,2.7vw,28px);
  line-height:1.32;
  font-weight:650;
  letter-spacing:-.005em;
}
.section-head p{margin-top:12px;font-size:14px;color:var(--text-500)}
.section-head .lead{margin-top:14px;font-size:15px;color:var(--text-300);line-height:1.85}

/* 主题卡片矩阵 */
.topic-row{margin-left:-12px;margin-right:-12px}
.topic-row > .cell{padding:0 12px;margin-bottom:24px}
.topic-card{
  position:relative;
  display:flex;flex-direction:column;
  height:100%;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.topic-card:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:0 20px 40px -28px rgba(0,0,0,.9)}
.topic-card__media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface-2)}
.topic-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .38s ease}
.topic-card:hover .topic-card__media img{transform:scale(1.03)}
.topic-card__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,18,15,.05) 0%,rgba(8,18,15,.72) 100%);
}
.topic-card__num{
  position:absolute;left:16px;bottom:12px;z-index:2;
  font-size:12.5px;letter-spacing:.20em;color:var(--accent-warm);
  font-variant-numeric:tabular-nums;
}
.topic-card__body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.topic-card h3{font-size:19px;line-height:1.45;font-weight:600;color:var(--text-100)}
.topic-card p{font-size:14.5px;line-height:1.78;color:var(--text-300)}
.topic-card__link{
  margin-top:auto;padding-top:7px;
  display:inline-flex;align-items:center;gap:7px;
  font-size:13.5px;color:var(--brand-400);
  transition:gap .18s ease,color .18s ease;
}
.topic-card:hover .topic-card__link{gap:12px;color:var(--brand-500)}

/* 数据条 */
.stat-bar{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:0;
  background:rgba(255,255,255,.055);
  border:1px solid var(--glass-line);
  border-radius:var(--r-panel);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--glass-shadow);
  padding:30px 32px;
}
.stat{padding:0 26px}
.stat:first-child{padding-left:0}
.stat:last-child{padding-right:0}
.stat + .stat{border-left:1px solid var(--line)}
.stat__label{font-size:13px;color:var(--text-500);letter-spacing:.02em}
.stat__value{
  margin:8px 0 10px;
  font-size:clamp(30px,3.6vw,44px);
  font-weight:700;line-height:1.1;
  color:var(--brand-400);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.015em;
}
.stat__value small{font-size:15px;color:var(--text-300);font-weight:500;margin-left:4px}
.badge-warm{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--r-pill);
  background:rgba(231,177,94,.12);
  border:1px solid rgba(231,177,94,.38);
  color:var(--accent-warm);
  font-size:12px;line-height:1.6;
  font-variant-numeric:tabular-nums;
}
.stat__note{display:block;margin-top:12px;font-size:12px;color:var(--text-500);line-height:1.7}

/* 两栏图文 */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.split + .split{margin-top:72px}
.split--reverse{grid-template-columns:.95fr 1.05fr}
.split--reverse .split__media{order:-1}
.split__media{
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  aspect-ratio:16/11;
  background:var(--surface);
  position:relative;
}
.split__media img{width:100%;height:100%;object-fit:cover}
.split__media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(8,18,15,0) 40%,rgba(8,18,15,.55) 100%);
  pointer-events:none;
}
.split__body h2{
  font-size:clamp(21px,2.5vw,27px);
  line-height:1.35;font-weight:650;letter-spacing:-.005em;
}
.split__body > p{margin-top:16px;font-size:15px;line-height:1.85;color:var(--text-300)}
.check-list{margin-top:22px;display:grid;gap:12px}
.check-list li{
  position:relative;padding-left:24px;
  font-size:14.5px;line-height:1.8;color:var(--text-300);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:8px;height:8px;border-radius:3px;
  background:var(--brand-500);
  box-shadow:0 0 0 3px rgba(47,212,180,.14);
}
.split__tag{
  display:inline-flex;align-items:center;gap:8px;
  margin-bottom:14px;padding:5px 12px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.14em;color:var(--accent-warm);
  font-variant-numeric:tabular-nums;
}

/* FAQ */
.faq{display:grid;gap:12px;max-width:920px}
.faq-item{
  background:var(--glass-bg);
  border:1px solid var(--glass-line);
  border-radius:var(--r-card);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  box-shadow:var(--glass-shadow);
  overflow:hidden;
  transition:border-color .2s ease;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item.is-open{border-color:var(--line-strong)}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:62px;padding:16px 22px;
  background:transparent;border:0;text-align:left;
  font-size:15.5px;font-weight:600;color:var(--text-100);
  line-height:1.6;
}
.faq-q i{flex:0 0 auto;color:var(--brand-400);font-size:14px;transition:transform .24s ease}
.faq-item.is-open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 22px 20px;font-size:14.5px;line-height:1.85;color:var(--text-300)}

/* CTA */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  padding:40px 42px;
  border-radius:var(--r-panel);
  border:1px solid var(--line-strong);
  background:
    radial-gradient(680px 240px at 12% 0%,rgba(47,212,180,.18),transparent 70%),
    radial-gradient(520px 220px at 92% 110%,rgba(231,177,94,.12),transparent 72%),
    var(--surface);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);line-height:1.35;font-weight:650;max-width:640px}
.cta-band p{margin-top:12px;font-size:14.5px;color:var(--text-300);max-width:620px}
.cta-band__actions{display:flex;gap:14px;flex-wrap:wrap}

/* 页脚 */
.site-footer{background:var(--bg-800);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:44px;padding-bottom:48px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand > p{font-size:14px;line-height:1.85;color:var(--text-300);max-width:360px}
.footer-contact{margin-top:20px;display:grid;gap:10px}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-500);line-height:1.7}
.footer-contact i{color:var(--brand-700);margin-top:5px;font-size:12px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-100);margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:13.5px;color:var(--text-300);transition:color .18s,padding-left .18s}
.footer-col a:hover{color:var(--brand-400);padding-left:3px}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.footer-bottom p{font-size:12.5px;color:var(--text-500)}
.footer-bottom .meta{display:flex;gap:22px;flex-wrap:wrap}
.footer-bottom .meta span{font-size:12.5px;color:var(--text-500)}

/* 返回顶部 */
.to-top{
  position:fixed;right:22px;bottom:26px;z-index:150;
  width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;
  background:var(--surface-2);
  border:1px solid var(--line-strong);
  color:var(--brand-400);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s,background .2s,color .2s;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--brand-500);color:#062018}

/* 动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s ease,transform .26s ease}
.reveal.in{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1024px){
  .topbar__actions,.navbar{display:none}
  .nav-search{display:none}
  .nav-toggle{display:grid}
  .topbar__inner{height:56px}
  .site-header.is-scrolled .topbar__inner{height:56px}
  .section{padding:72px 0}
  .split,.split--reverse{grid-template-columns:1fr;gap:32px}
  .split--reverse .split__media{order:0}
  .split + .split{margin-top:56px}
  .stat-bar{grid-template-columns:1fr;padding:24px 26px}
  .stat{padding:0}
  .stat + .stat{border-left:0;border-top:1px solid var(--line);margin-top:18px;padding-top:18px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band{padding:32px}
  .drawer .nav-search{display:flex}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .section{padding:48px 0}
  .channel-hero__inner{padding:38px 0 32px}
  .brand__text strong{font-size:14.5px}
  .brand__mark{width:32px;height:32px;font-size:15px;border-radius:9px}
  .anchor-bar{gap:8px}
  .anchor-bar a{font-size:12px;padding:8px 13px}
  .topic-card__body{padding:18px 18px 22px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-band{padding:26px 22px}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn{flex:1 1 auto}
  .faq-q{font-size:14.5px;padding:15px 18px}
  .faq-a p{padding:0 18px 18px}
  .to-top{right:14px;bottom:16px}
}
@media (min-width:1440px){
  .container{padding:0 40px}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
:root{
  --bg-900:#08120F;
  --bg-800:#0C1A17;
  --surface:#10231F;
  --surface-2:#16302A;
  --brand-500:#2FD4B4;
  --brand-400:#5FE6CC;
  --brand-700:#17A08A;
  --accent-warm:#E7B15E;
  --text-100:#EAF3F0;
  --text-300:#A9BFB9;
  --text-500:#7C948E;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(47,212,180,.35);
  --glass-bg:rgba(255,255,255,.055);
  --glass-border:1px solid rgba(255,255,255,.12);
  --shadow-glass:0 18px 44px -22px rgba(0,0,0,.65);
  --r-card:16px;
  --r-panel:20px;
  --r-btn:12px;
  --r-img:14px;
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:48px; --sp-6:72px; --sp-7:96px;
  --container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:120px}
body{
  margin:0;
  background:var(--bg-900);
  color:var(--text-100);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--brand-400);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease)}
a:hover{color:var(--brand-500)}
button{font-family:inherit}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid rgba(95,230,204,.9);outline-offset:2px;border-radius:4px}
h1,h2,h3,h4,h5,h6{font-family:inherit;color:var(--text-100);margin:0;letter-spacing:.01em}
h1{font-size:clamp(26px,3.6vw,40px);line-height:1.24;font-weight:700}
h2{font-size:clamp(21px,2.3vw,27px);line-height:1.36;font-weight:600}
h3{font-size:19px;line-height:1.5;font-weight:600}
p{margin:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
@media (min-width:1440px){.container{max-width:1280px;padding:0 32px}}

/* ===== Foundation 默认样式覆盖 ===== */
.button{font-family:inherit;border-radius:var(--r-btn);background:var(--brand-500);color:#062018;border:1px solid transparent;box-shadow:none;font-weight:600}
.button:hover,.button:focus{background:var(--brand-400);color:#062018}
.card{background:transparent;border:0;box-shadow:none;border-radius:var(--r-card)}
.menu{background:transparent;margin:0}
.menu a{padding:0}
.top-bar{background:transparent;padding:0;margin:0}
.accordion{background:transparent;margin:0;border:0;border-radius:var(--r-card)}
input,textarea,select{box-shadow:none;font-family:inherit}

/* ===== 通用按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{
  background:var(--brand-500);color:#062018;
  box-shadow:0 0 0 1px rgba(47,212,180,.45),0 12px 28px -10px rgba(47,212,180,.45);
}
.btn-primary:hover{
  background:var(--brand-400);color:#062018;transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(47,212,180,.6),0 16px 34px -12px rgba(47,212,180,.6);
}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--text-100);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--brand-500);color:var(--brand-400);box-shadow:inset 0 0 18px -8px rgba(47,212,180,.7)}
.btn-sm{min-height:38px;padding:0 16px;font-size:13px;border-radius:10px}

/* ===== 吸顶导航 ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(8,18,15,.84);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(120%);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-stuck{background:rgba(8,18,15,.96);box-shadow:0 14px 34px -22px rgba(0,0,0,.95)}
.brand-row{display:flex;align-items:center;gap:20px;height:64px;transition:height .25s var(--ease)}
.site-header.is-stuck .brand-row{height:52px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--text-100);flex:0 0 auto}
.brand:hover{color:var(--text-100)}
.brand__mark{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-700));
  color:#062018;font-size:16px;font-weight:700;letter-spacing:0;
  box-shadow:0 8px 20px -12px rgba(47,212,180,.9);
}
.brand__text strong{display:block;font-size:16px;font-weight:700;letter-spacing:.02em;line-height:1.35}
.brand__text em{display:block;font-style:normal;font-size:11px;letter-spacing:.18em;color:var(--text-500);line-height:1.5}
.header-search{position:relative;display:flex;align-items:center;flex:1 1 300px;max-width:400px;margin:0}
.header-search input[type="search"]{
  width:100%;height:40px;margin:0;
  padding:0 96px 0 40px;
  border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text-100);font-size:14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.header-search input[type="search"]::placeholder{color:var(--text-500)}
.header-search input[type="search"]:focus{
  outline:none;border-color:var(--brand-500);
  background:rgba(255,255,255,.06);
  box-shadow:0 0 0 3px rgba(47,212,180,.16);
}
.header-search__icon{position:absolute;left:14px;font-size:13px;color:var(--text-500);pointer-events:none}
.header-search__btn{
  position:absolute;right:5px;height:30px;padding:0 14px;
  border:0;border-radius:9px;cursor:pointer;
  background:rgba(47,212,180,.16);color:var(--brand-400);
  font-size:13px;font-weight:600;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.header-search__btn:hover{background:var(--brand-500);color:#062018}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}
.header-link{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:0 6px;font-size:14px;color:var(--text-300)}
.header-link:hover{color:var(--brand-400)}
.nav-row{display:flex;align-items:center;gap:16px;border-top:1px solid rgba(255,255,255,.06);min-height:48px}
.main-nav{display:flex;align-items:center;gap:2px;flex:0 0 auto}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;
  min-height:48px;padding:0 14px;font-size:14px;
  color:var(--text-300);border-bottom:2px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.main-nav a:hover{color:var(--text-100);background:rgba(255,255,255,.04)}
.main-nav a.is-active{color:var(--brand-400);border-bottom-color:var(--brand-500)}
.hotwords{display:flex;align-items:center;gap:8px;margin-left:auto;overflow-x:auto;scrollbar-width:none;max-width:48%;padding:6px 0}
.hotwords::-webkit-scrollbar{display:none}
.hotword{
  white-space:nowrap;font-size:12px;padding:5px 11px;border-radius:999px;
  border:1px solid var(--line);color:var(--text-300);text-decoration:none;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.hotword:hover{border-color:var(--line-strong);color:var(--brand-400);background:rgba(47,212,180,.08)}
.nav-toggle{
  display:none;align-items:center;gap:8px;min-height:44px;padding:0 14px;
  border-radius:var(--r-btn);border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--text-100);
  font-size:14px;cursor:pointer;margin-left:auto;
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--brand-400)}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:rgba(8,18,15,.98);padding:16px 20px 22px}
.mobile-drawer.is-open{display:block}
.mobile-drawer .header-search{display:flex;max-width:none;margin-bottom:14px}
.mobile-drawer__nav{display:flex;flex-direction:column;gap:4px;margin-bottom:14px}
.mobile-drawer__nav a{
  display:flex;align-items:center;min-height:44px;padding:0 12px;border-radius:10px;
  font-size:15px;color:var(--text-300);border:1px solid transparent;
}
.mobile-drawer__nav a:hover{background:rgba(255,255,255,.05);color:var(--text-100)}
.mobile-drawer__nav a.is-active{color:var(--brand-400);border-color:var(--line-strong);background:rgba(47,212,180,.08)}
.mobile-drawer__hot{display:flex;flex-wrap:wrap;gap:8px}

/* ===== 页面标题条 ===== */
.page-head{
  position:relative;overflow:hidden;
  padding:32px 0 40px;
  background:
    radial-gradient(120% 150% at 10% -30%,rgba(47,212,180,.16),transparent 58%),
    linear-gradient(180deg,#0B1A16 0%,#08120F 100%);
  border-bottom:1px solid var(--line);
}
.page-head::before{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,transparent,rgba(47,212,180,.75),rgba(95,230,204,.14),transparent);
}
.page-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(255,255,255,.028) 0 1px,transparent 1px 46px);
  opacity:.7;
}
.page-head .container{position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-500);margin-bottom:18px}
.breadcrumb a{color:var(--text-300)}
.breadcrumb a:hover{color:var(--brand-400)}
.breadcrumb span[aria-hidden]{color:var(--text-500)}
.page-head__row{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--accent-warm);
  margin-bottom:14px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent-warm);display:inline-block}
.page-head h1{max-width:16em}
.page-head__desc{font-size:15px;line-height:1.8;color:var(--text-300);margin-top:14px;max-width:44em}
.back-link{
  display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 18px;
  border-radius:999px;border:1px solid var(--line-strong);
  font-size:14px;color:var(--text-100);white-space:nowrap;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.back-link:hover{border-color:var(--brand-500);color:var(--brand-400);background:rgba(47,212,180,.08)}

/* ===== 文档布局 ===== */
.doc-wrap{padding:56px 0 0}
.doc-layout{align-items:flex-start}
.doc-aside{padding-right:24px}
@media (min-width:1025px){
  .doc-layout>.cell.doc-aside{flex:0 0 240px;max-width:240px;padding-right:24px}
  .doc-layout>.cell.doc-main{flex:1 1 0;max-width:none;min-width:0;padding-left:0}
}
.doc-toc{
  position:sticky;top:128px;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-panel);padding:18px 14px;
  box-shadow:0 18px 40px -30px rgba(0,0,0,.9);
}
.doc-toc__title{font-size:12px;letter-spacing:.18em;color:var(--text-500);margin:0 0 12px;padding-left:10px}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.toc-list a{
  display:flex;align-items:center;gap:10px;min-height:42px;padding:0 10px;
  border-radius:10px;border:1px solid transparent;
  font-size:14px;color:var(--text-300);line-height:1.5;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.toc-list a:hover{background:rgba(255,255,255,.05);color:var(--text-100)}
.toc-list a.is-active{color:var(--brand-400);border-color:var(--line-strong);background:rgba(47,212,180,.08)}
.toc-list .num{font-size:12px;font-weight:700;color:var(--accent-warm);font-variant-numeric:tabular-nums;flex:0 0 auto}
.toc-fold{display:none;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:6px 14px}
.toc-fold summary{
  display:flex;align-items:center;justify-content:space-between;
  min-height:44px;cursor:pointer;font-size:14px;color:var(--text-100);list-style:none;
}
.toc-fold summary::-webkit-details-marker{display:none}
.toc-fold summary::after{content:"\002B";color:var(--brand-400);font-size:18px;line-height:1}
.toc-fold[open] summary::after{content:"\00D7"}
.toc-fold .toc-list{padding-bottom:10px}

/* ===== 正文区 ===== */
.doc-main__title{font-size:20px;font-weight:600;margin:0 0 8px}
.doc-main__lead{font-size:14px;color:var(--text-500);margin:0 0 24px}
.stat-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:8px}
.stat-strip__item{
  padding:16px 18px;border-radius:var(--r-card);
  border:1px solid var(--line);background:var(--surface);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.stat-strip__item:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.stat-strip__num{
  display:block;font-size:26px;font-weight:700;line-height:1.2;
  color:var(--brand-400);font-variant-numeric:tabular-nums;
  margin-bottom:4px;
}
.stat-strip__label{font-size:13px;line-height:1.6;color:var(--text-300)}
.doc-section{padding:34px 0 30px;border-bottom:1px solid var(--line)}
.doc-section:last-of-type{border-bottom:none}
.doc-section__head{display:flex;align-items:baseline;gap:14px;margin-bottom:14px}
.doc-num{
  font-size:14px;font-weight:700;letter-spacing:.12em;
  color:var(--accent-warm);font-variant-numeric:tabular-nums;flex:0 0 auto;
}
.doc-section h3{margin:0}
.doc-section p{font-size:15px;line-height:1.85;color:var(--text-300);margin:0 0 14px}
.doc-points{list-style:none;margin:0 0 16px;padding:0;display:flex;flex-direction:column;gap:9px}
.doc-points li{position:relative;padding-left:20px;font-size:15px;line-height:1.8;color:var(--text-300)}
.doc-points li::before{
  content:"";position:absolute;left:0;top:.85em;
  width:9px;height:1px;background:var(--brand-500);
}
.doc-note{
  display:flex;align-items:flex-start;gap:10px;
  padding:12px 16px;border-radius:12px;
  border:1px solid var(--line-strong);background:rgba(47,212,180,.06);
  font-size:14px;line-height:1.75;color:var(--text-300);margin:0;
}
.doc-note i{color:var(--brand-400);margin-top:4px;flex:0 0 auto}
.doc-note strong{color:var(--text-100);font-weight:600}

/* ===== 相关链接 ===== */
.related{padding:64px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px;flex-wrap:wrap}
.section-head p{font-size:14px;color:var(--text-500);margin-top:6px}
.related .cell{display:flex}
.related-card{
  display:flex;gap:18px;align-items:center;width:100%;
  padding:18px;border-radius:var(--r-panel);
  border:1px solid var(--line);background:var(--surface);
  color:inherit;
  transition:border-color .22s var(--ease),transform .22s var(--ease),background .22s var(--ease);
}
.related-card:hover{border-color:var(--line-strong);transform:translateY(-3px);background:var(--surface-2);color:inherit}
.related-card__media{flex:0 0 132px;width:132px;aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;background:var(--bg-800)}
.related-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.related-card:hover .related-card__media img{transform:scale(1.04)}
.related-card__body{min-width:0}
.related-card__tag{
  display:inline-block;font-size:12px;color:var(--brand-400);
  border:1px solid var(--line-strong);border-radius:999px;
  padding:2px 10px;margin-bottom:8px;
}
.related-card h3{font-size:17px;margin:0 0 6px;line-height:1.5}
.related-card p{font-size:13px;line-height:1.7;color:var(--text-300);margin:0 0 10px}
.related-card__more{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--brand-400)}
.related-card:hover .related-card__more{color:var(--brand-500)}

/* ===== CTA 条 ===== */
.cta-band{
  margin:64px 0 0;padding:36px;
  border-radius:var(--r-panel);
  border:1px solid var(--line-strong);
  background:linear-gradient(120deg,rgba(47,212,180,.14),rgba(22,48,42,.92) 62%);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:var(--shadow-glass);
}
.cta-band h2{font-size:clamp(20px,2.2vw,24px);margin-bottom:8px}
.cta-band p{font-size:14px;line-height:1.8;color:var(--text-300);max-width:44em}
.cta-band__actions{display:flex;gap:12px;flex-wrap:wrap}

/* ===== 页脚 ===== */
.site-footer{background:var(--bg-800);border-top:1px solid var(--line);padding:64px 0 0;margin-top:72px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--text-300);margin:16px 0 18px;max-width:34em}
.footer-contact{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px;font-size:13px;color:var(--text-500)}
.footer-contact i{width:16px;color:var(--brand-700);margin-right:6px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-100);margin:0 0 14px}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--text-300)}
.footer-col a:hover{color:var(--brand-400)}
.footer-bottom{
  margin-top:48px;padding:20px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--text-500);
}
.footer-bottom .meta{display:flex;gap:20px;flex-wrap:wrap}

/* ===== 返回顶部 ===== */
.to-top{
  position:fixed;right:20px;bottom:24px;z-index:70;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line-strong);
  display:grid;place-items:center;cursor:pointer;
  background:var(--surface-2);color:var(--brand-400);
  opacity:0;pointer-events:none;
  transition:opacity .25s var(--ease),transform .25s var(--ease),border-color .2s var(--ease);
}
.to-top.is-visible{opacity:1;pointer-events:auto}
.to-top:hover{border-color:var(--brand-500);color:var(--brand-500);transform:translateY(-2px)}

/* ===== 动效 ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .26s var(--ease),transform .26s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important}
}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .brand-row{height:56px;gap:12px}
  .brand-row .header-search{display:none}
  .header-actions{display:none}
  .nav-row{display:none}
  .nav-toggle{display:inline-flex}
  .page-head{padding:26px 0 32px}
  .doc-wrap{padding:40px 0 0}
  .doc-aside{flex:0 0 100%;max-width:100%;padding:0 0 24px}
  .doc-toc{display:none}
  .toc-fold{display:block}
  .doc-layout>.cell{flex:0 0 100%;max-width:100%;padding:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-band{padding:28px}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .brand__text strong{font-size:15px}
  .brand__text em{font-size:10px}
  .page-head__row{gap:18px;align-items:flex-start}
  .page-head h1{max-width:none}
  .stat-strip{grid-template-columns:1fr;gap:10px}
  .stat-strip__num{font-size:24px}
  .doc-section{padding:26px 0 24px}
  .related-card{flex-direction:column;align-items:flex-start;gap:14px}
  .related-card__media{width:100%;flex:0 0 auto;aspect-ratio:16/9}
  .footer-grid{grid-template-columns:1fr}
  .cta-band{padding:22px;flex-direction:column;align-items:flex-start}
  .cta-band__actions{width:100%}
  .cta-band__actions .btn{flex:1 1 100%}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .to-top{right:14px;bottom:16px}
}