/* roulang page: index */
:root{
  --ink:#101215;--ink-2:#1B1F24;--accent:#E2542C;--accent-hover:#C8451F;
  --accent-soft:rgba(226,84,44,.08);--teal:#1F5F5B;--teal-soft:#E7F0EE;
  --bg:#F7F4EF;--surface:#FFFFFF;--surface-2:#F1EDE6;--line:#E5E0D6;
  --text:#14161A;--text-2:#5A6169;--text-3:#8A9099;
  --ok:#2F7D6B;--warn:#B8860B;--err:#C0392B;--disabled:#C8C6C0;
  --bronze:#B08968;--silver:#9AA0A6;--gold:#C9A227;
  --r-card:14px;--r-btn:10px;--r-badge:6px;--r-in:10px;
  --e1:0 1px 2px rgba(16,18,20,.04);--e2:0 8px 24px rgba(16,18,20,.06);--e3:0 18px 48px rgba(16,18,20,.10);
  --t-fast:180ms;--t:240ms;--t-slow:320ms;--ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;line-height:1.85;letter-spacing:0;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-radius:12px}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;letter-spacing:-.02em;line-height:1.2}
h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
h3{font-size:21px;font-weight:600;line-height:1.45}
strong{font-weight:700}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
.eyebrow{font-size:12px;letter-spacing:.08em;color:var(--text-3);font-weight:600}
.meta{font-size:13px;line-height:1.6;color:var(--text-3)}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head p{color:var(--text-2);font-size:15px;max-width:640px;margin-top:10px}
.link-more{font-size:14px;color:var(--accent);font-weight:600;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;border-bottom:1px solid transparent;transition:border-color var(--t) var(--ease)}
.link-more:hover{border-color:var(--accent)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(226,84,44,.28);outline-offset:2px;border-radius:6px}
/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:all var(--t) var(--ease)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-1px)}
.btn-accent:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink);background:#fff}
.btn-ghost:active{transform:translateY(1px)}
.btn-light{background:#F7F4EF;color:var(--ink)}
.btn-light:hover{background:#fff}
.btn-sm{height:34px;padding:0 16px;font-size:13px;border-radius:8px}
.btn-xs{height:30px;padding:0 14px;font-size:12.5px;border-radius:8px}
.btn[disabled],.btn.is-disabled{background:var(--disabled);color:#fff;cursor:not-allowed;transform:none;border-color:transparent}
.btn-text{background:none;border:0;padding:0;color:var(--accent);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px;cursor:pointer;transition:gap var(--t) var(--ease)}
.btn-text:hover{gap:10px}
/* ============ 徽章 / 标签 ============ */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:4px 10px;border-radius:var(--r-badge);background:var(--teal-soft);color:var(--teal)}
.badge--vip{background:var(--accent-soft);color:var(--accent)}
.chip{display:inline-flex;align-items:center;font-size:12.5px;padding:4px 12px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--text-2);transition:all var(--t) var(--ease)}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.chip.is-on{background:var(--accent);border-color:var(--accent);color:#fff}
/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:80;background:var(--ink);color:#fff;transition:box-shadow var(--t) var(--ease)}
.topbar-inner{height:40px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;min-width:0}
.brand-mark{width:24px;height:24px;border-radius:6px;background:var(--accent);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:800;flex:none}
.brand-text{font-size:14px;font-weight:700;letter-spacing:.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-actions{display:flex;align-items:center;gap:18px}
.topbar-link{font-size:13px;color:rgba(255,255,255,.7);transition:color var(--t) var(--ease)}
.topbar-link:hover{color:#fff}
.channelbar{border-top:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.12)}
.channel-inner{height:48px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.channel-nav{display:flex;align-items:center;gap:26px;height:100%}
.channel-link{position:relative;font-size:14.5px;color:rgba(255,255,255,.78);height:100%;display:inline-flex;align-items:center;transition:color var(--t) var(--ease)}
.channel-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform var(--t) var(--ease)}
.channel-link:hover{color:#fff}
.channel-link:hover::after{transform:scaleX(1)}
.channel-link.is-active{color:#fff;font-weight:600}
.channel-link.is-active::after{transform:scaleX(1)}
.channel-tools{display:flex;align-items:center;gap:10px}
.chip-hot{font-size:12px;padding:4px 12px;border-radius:999px;background:rgba(255,255,255,.08);color:rgba(255,255,255,.78);transition:background var(--t) var(--ease)}
.chip-hot:hover{background:rgba(255,255,255,.16);color:#fff}
.nav-search input{height:32px;width:260px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.08);padding:0 12px;font-size:13px;color:#fff;transition:all var(--t) var(--ease)}
.nav-search input::placeholder{color:rgba(255,255,255,.55)}
.nav-search input:focus{background:#fff;color:var(--ink);border-color:var(--accent)}
.menu-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.2);background:transparent;color:#fff;cursor:pointer}
.site-header.is-compact .topbar-inner{height:56px}
.site-header.is-compact .channelbar,
.site-header.is-compact .chip-hot,
.site-header.is-compact .nav-search{display:none}
.site-header.is-compact{box-shadow:var(--e2)}
/* ============ Hero ============ */
.hero{padding:76px 0 84px;background:linear-gradient(180deg,#FFFDFA 0%,var(--bg) 100%);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:56px;align-items:start}
.hero h1{margin:14px 0 20px;max-width:16em}
.hero-sub{font-size:17px;color:var(--text-2);max-width:33em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.metric-num{font-size:26px;font-weight:800;color:var(--ink);letter-spacing:-.01em}
.metric-num span{font-size:14px;font-weight:600;color:var(--text-3);margin-left:2px}
.metric-label{font-size:12.5px;color:var(--text-3);margin-top:2px}
.hero-media{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--e3);aspect-ratio:4/3}
.hero-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,18,20,.05) 40%,rgba(16,18,20,.55) 100%)}
.hero-card{position:absolute;left:18px;right:18px;bottom:18px;z-index:2;background:rgba(247,244,239,.94);border-radius:12px;padding:16px 18px;border:1px solid rgba(255,255,255,.5)}
.hero-card-tag{display:inline-block;font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.06em;margin-bottom:6px}
.hero-card p{font-size:14px;color:var(--text-2);line-height:1.7}
/* ============ 对比表 ============ */
.table-wrap{border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);overflow:auto;box-shadow:var(--e1)}
table.compare{width:100%;border-collapse:collapse;min-width:720px}
table.compare caption{text-align:left;font-size:13px;color:var(--text-3);padding:16px 20px 0}
table.compare th,table.compare td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--line);font-size:15px}
table.compare thead th{position:sticky;top:0;background:var(--ink);color:#F7F4EF;font-weight:600;font-size:14px;z-index:3}
table.compare tbody tr:hover td{background:var(--surface-2)}
table.compare td:first-child,table.compare th:first-child{position:sticky;left:0;background:var(--surface);z-index:2;font-weight:600}
table.compare thead th:first-child{background:var(--ink);z-index:4}
table.compare tbody tr:hover td:first-child{background:var(--surface-2)}
table.compare .col-rec{background:var(--accent-soft)}
table.compare tbody tr:hover .col-rec{background:#FBE7DF}
table.compare thead th.col-rec{background:#2A1A14;color:#fff;position:relative;border-bottom:2px solid var(--accent)}
table.compare .col-badge{display:inline-block;font-size:11px;font-weight:700;background:var(--accent);color:#fff;border-radius:6px;padding:2px 7px;margin-left:8px}
table.compare .col-rec{border-left:2px solid var(--accent);border-right:2px solid var(--accent)}
table.compare tbody tr:last-child .col-rec{border-bottom:2px solid var(--accent)}
.mark-yes{color:var(--teal);font-weight:700}
.mark-no{color:var(--text-3)}
/* ============ 等级卡 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.level-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--e1);transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease);position:relative;display:flex;flex-direction:column;gap:14px}
.level-card:hover{transform:translateY(-2px);box-shadow:var(--e2)}
.level-stripe{height:4px;border-radius:999px;width:56px}
.level-bronze .level-stripe{background:var(--bronze)}
.level-silver .level-stripe{background:var(--silver)}
.level-gold .level-stripe{background:var(--gold)}
.level-card h3{font-size:20px}
.level-price{font-size:13px;color:var(--text-3)}
.level-list{display:flex;flex-direction:column;gap:8px;font-size:14.5px;color:var(--text-2)}
.level-list li{display:flex;gap:8px}
.level-list li::before{content:"—";color:var(--text-3);flex:none}
/* ============ 内容卡 ============ */
.card-cover{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--e1);transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease);display:flex;flex-direction:column;position:relative}
.card-cover:hover{transform:translateY(-2px);box-shadow:var(--e2)}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;border-bottom:1px solid var(--line);background:var(--surface-2)}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14px;color:var(--text-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:6px}
.lock{position:absolute;top:12px;right:12px;width:28px;height:28px;border-radius:999px;background:rgba(16,18,20,.72);color:#fff;display:grid;place-items:center;font-size:13px;z-index:2}
.card-cover.is-locked .card-media::after{content:"";position:absolute;inset:0;background:rgba(247,244,239,.45)}
/* ============ 列表行 ============ */
.list-row{display:grid;grid-template-columns:86px minmax(0,1fr) 120px 24px;gap:22px;align-items:center;padding:22px 4px;border-bottom:1px solid var(--line);transition:background var(--t) var(--ease)}
.list-row:first-child{border-top:1px solid var(--line)}
.list-row:hover{background:var(--surface-2)}
.list-date{font-size:13px;line-height:1.5;color:var(--text-3);text-align:left}
.list-date .d-day{font-size:20px;font-weight:700;color:var(--ink);display:block}
.list-main h3{font-size:17.5px;margin-bottom:6px}
.list-main h3 a:hover{color:var(--accent)}
.list-main p{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.list-main .badge{margin-top:8px}
.list-thumb{aspect-ratio:3/2;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--surface-2)}
.list-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0}
.list-arrow{color:var(--text-3);transition:transform var(--t) var(--ease),color var(--t) var(--ease)}
.list-row:hover .list-arrow{color:var(--accent);transform:translateX(4px)}
.empty-state{border:1px solid var(--line);background:var(--surface);border-radius:var(--r-card);padding:48px 24px;text-align:center;box-shadow:var(--e1)}
.empty-icon{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface-2);margin:0 auto 16px;display:grid;place-items:center;color:var(--text-3)}
.empty-state p{color:var(--text-2);font-size:15px}
.empty-state .link-more{margin-top:12px}
.skeleton{background:var(--surface-2);border-radius:8px;position:relative;overflow:hidden}
.skeleton::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.7),transparent);animation:shine 1.2s linear infinite}
@keyframes shine{from{transform:translateX(-100%)}to{transform:translateX(100%)}}
.notice-err{border:1px solid var(--err);background:#FDF1EF;color:var(--err);border-radius:var(--r-btn);padding:12px 16px;font-size:14px;margin-bottom:20px;display:none}
/* ============ FAQ ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:920px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--e1);overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:16.5px;font-weight:600;transition:background var(--t) var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--surface-2)}
.faq-item summary::after{content:"›";font-size:22px;color:var(--text-3);transform:rotate(90deg);transition:transform var(--t) var(--ease);flex:none}
.faq-item[open] summary::after{transform:rotate(-90deg);color:var(--accent)}
.faq-item .faq-answer{padding:0 24px 22px;font-size:15.5px;line-height:1.8;color:var(--text-2);border-top:1px solid var(--line);padding-top:16px}
/* ============ CTA ============ */
.cta-band{position:relative;background:var(--ink);color:#F7F4EF;overflow:hidden;border-radius:var(--r-card);padding:56px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:40px;align-items:center}
.cta-band::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;opacity:.32}
.cta-band>*{position:relative;z-index:2}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;margin-top:12px;max-width:44em}
.cta-side{display:flex;flex-direction:column;gap:16px;align-items:flex-end}
.seg{display:inline-flex;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:4px;gap:4px}
.seg button{border:0;background:transparent;color:rgba(255,255,255,.8);font-size:13px;padding:6px 18px;border-radius:999px;cursor:pointer;transition:all var(--t) var(--ease)}
.seg button.is-on{background:var(--accent);color:#fff}
/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);padding:72px 0 28px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand-text{color:#fff;font-size:15px}
.footer-brand p{font-size:13px;line-height:1.8;margin-top:14px;max-width:30em}
.footer-col h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px}
.footer-col li+li{margin-top:10px}
.footer-col a{font-size:13px;color:rgba(255,255,255,.7);transition:color var(--t) var(--ease)}
.footer-col a:hover{color:#fff}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.55)}
/* ============ 抽屉 ============ */
.drawer-mask{position:fixed;inset:0;background:rgba(16,18,20,.5);opacity:0;visibility:hidden;transition:opacity var(--t) var(--ease);z-index:90}
.drawer{position:fixed;top:0;right:0;height:100%;width:300px;background:var(--ink);color:#fff;z-index:100;transform:translateX(100%);transition:transform var(--t-slow) var(--ease);padding:24px;display:flex;flex-direction:column;gap:8px;overflow:auto}
body.drawer-open .drawer-mask{opacity:1;visibility:visible}
body.drawer-open .drawer{transform:translateX(0)}
body.drawer-open{overflow:hidden}
.drawer h4{font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.5);margin:18px 0 6px}
.drawer a{font-size:15px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.1);color:rgba(255,255,255,.85)}
.drawer .btn{margin-top:22px}
.drawer-close{align-self:flex-end;width:36px;height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.2);background:transparent;color:#fff;cursor:pointer}
/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity var(--t-slow) var(--ease),transform var(--t-slow) var(--ease)}
.reveal.in{opacity:1;transform:none}
/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{padding:0 24px}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .nav-search input{width:200px}
}
@media (max-width:1023px){
  .channelbar{display:none}
  .menu-toggle{display:grid;place-items:center}
  .topbar-link{display:none}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero{padding:56px 0 64px}
  .grid-3{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:40px 28px}
  .cta-side{align-items:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .hero-metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:28px}
  .grid-4{grid-template-columns:1fr}
  .list-row{grid-template-columns:minmax(0,1fr) 96px 20px;gap:14px;padding:18px 0}
  .list-date{grid-column:1/-1;display:flex;align-items:center;gap:8px}
  .list-date .d-day{font-size:14px;font-weight:600;color:var(--text-3)}
  .table-wrap{margin:0 -16px;border-radius:0;border-left:0;border-right:0}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{padding-top:52px;margin-top:64px}
}
@media (max-width:519px){
  h3{font-size:19px}
  .card-body{padding:16px 18px 20px}
  .level-card{padding:20px}
  .btn{width:100%}
  .hero-actions .btn{width:100%}
  .faq-item summary{padding:16px 18px;font-size:15.5px}
  .faq-item .faq-answer{padding:14px 18px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#101215;
  --ink-2:#1B1F24;
  --accent:#E2542C;
  --accent-hover:#C8451F;
  --accent-soft:rgba(226,84,44,.08);
  --teal:#1F5F5B;
  --teal-soft:#E7F0EE;
  --bg:#F7F4EF;
  --surface:#FFFFFF;
  --surface-2:#F1EDE6;
  --line:#E5E0D6;
  --text:#14161A;
  --text-2:#5A6169;
  --text-3:#8A9099;
  --ok:#2F7D6B;
  --warn:#B8860B;
  --err:#C0392B;
  --disabled:#C8C6C0;
  --bronze:#B08968;
  --silver:#9AA0A6;
  --gold:#C9A227;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:6px;
  --e1:0 1px 2px rgba(16,18,20,.04);
  --e2:0 8px 24px rgba(16,18,20,.06);
  --e3:0 18px 48px rgba(16,18,20,.10);
  --t-fast:180ms;
  --t-mid:240ms;
  --t-slow:320ms;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:"Inter","system-ui",-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16.5px;
  line-height:1.87;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
a.link{color:var(--teal);text-decoration:underline;text-underline-offset:3px;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
figure{margin:0;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:3px solid rgba(226,84,44,.28);outline-offset:2px;border-radius:6px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){.container{max-width:1280px;}}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  cursor:pointer;
  transition:transform var(--t-fast) var(--ease),background-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
  white-space:nowrap;
}
.btn-primary{background:var(--accent);color:#FFF;box-shadow:var(--e1);}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);background:var(--accent-hover);}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(16,18,20,.22);}
.btn-ghost:hover{border-color:var(--ink);background:rgba(16,18,20,.04);transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-inverse{background:#FFF;color:var(--ink);}
.btn-inverse:hover{background:#F1EDE6;transform:translateY(-1px);}
.btn-sm{height:36px;padding:0 16px;font-size:13.5px;border-radius:9px;}
.btn-xs{height:32px;padding:0 14px;font-size:13px;border-radius:8px;}
.btn[disabled],.btn.is-disabled{background:var(--disabled);color:#fff;cursor:not-allowed;transform:none;box-shadow:none;border-color:transparent;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  background:none;border:0;padding:0;
  color:var(--teal);font-weight:600;font-size:14.5px;cursor:pointer;
}
.btn-text .arw{transition:transform var(--t-mid) var(--ease);}
.btn-text:hover .arw{transform:translateX(3px);}

/* ---------- 独立链接下划线动效 ---------- */
.uline{position:relative;}
.uline::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:100%;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t-mid) var(--ease);
}
.uline:hover::after{transform:scaleX(1);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:3px 10px;border-radius:var(--r-badge);
  font-size:12.5px;font-weight:600;line-height:1.6;letter-spacing:.01em;
}
.badge-cat{background:var(--teal-soft);color:var(--teal);}
.badge-vip{background:var(--accent-soft);color:var(--accent);}
.chip{
  display:inline-flex;align-items:center;
  padding:5px 13px;border-radius:999px;
  background:#FFF;border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
  transition:border-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease);
}
.chip:hover{border-color:var(--accent);color:var(--accent);}

/* ---------- 吸顶导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--ink);
  transition:box-shadow var(--t-mid) var(--ease);
}
.site-header.is-stuck{box-shadow:var(--e2);}
.nav-top{background:var(--ink);border-bottom:1px solid rgba(255,255,255,.08);}
.nav-top-inner{
  display:flex;align-items:center;justify-content:space-between;
  min-height:40px;gap:16px;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:#fff;}
.brand-mark{
  width:30px;height:30px;flex:0 0 30px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:9px;background:var(--accent);
  font-family:var(--font-num);font-weight:800;font-size:15px;color:#fff;
  transition:width var(--t-mid) var(--ease),height var(--t-mid) var(--ease),flex-basis var(--t-mid) var(--ease);
}
.brand-text{
  font-size:15.5px;font-weight:700;letter-spacing:-.01em;color:#fff;line-height:1.2;
}
.nav-top-right{display:flex;align-items:center;gap:18px;}
.top-link{
  font-size:13px;color:rgba(255,255,255,.72);
  transition:color var(--t-fast) var(--ease);
}
.top-link:hover{color:#fff;}
.nav-toggle{
  display:none;width:40px;height:40px;border:0;background:transparent;cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:#fff;border-radius:2px;
  transition:transform var(--t-mid) var(--ease);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

.nav-bottom{background:var(--ink);border-bottom:1px solid rgba(255,255,255,.12);}
.nav-bottom-inner{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:48px;
}
.channel-nav{display:flex;align-items:center;gap:26px;}
.channel-link{
  position:relative;display:inline-flex;align-items:center;height:48px;
  font-size:14.5px;color:rgba(255,255,255,.76);
  transition:color var(--t-fast) var(--ease);
}
.channel-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform var(--t-mid) var(--ease);
}
.channel-link:hover{color:#fff;}
.channel-link:hover::after{transform:scaleX(1);}
.channel-link.is-active{color:#fff;font-weight:600;}
.channel-link.is-active::after{transform:scaleX(1);}
.nav-tools{display:flex;align-items:center;gap:10px;}
.hot-chip{
  padding:4px 12px;border-radius:999px;
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.78);
  font-size:12px;letter-spacing:.02em;
  transition:background-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease);
}
.hot-chip:hover{background:rgba(255,255,255,.16);color:#fff;}
.nav-search input{
  width:256px;height:34px;padding:0 14px;
  border-radius:var(--r-input);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.08);
  color:#fff;font-size:13.5px;
  transition:background-color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.nav-search input::placeholder{color:rgba(255,255,255,.5);}
.nav-search input:focus{
  background:#fff;color:var(--ink);border-color:var(--accent);outline:none;
  box-shadow:0 0 0 3px rgba(226,84,44,.28);
}
.nav-search input:focus::placeholder{color:var(--text-3);}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,18,20,.5);
  opacity:0;visibility:hidden;transition:opacity var(--t-mid) var(--ease),visibility var(--t-mid) var(--ease);
  z-index:90;
}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;
  background:var(--ink);z-index:95;
  transform:translateX(100%);
  transition:transform var(--t-slow) var(--ease);
  padding:22px 20px;overflow-y:auto;
}
body.drawer-open .drawer-mask{opacity:1;visibility:visible;}
body.drawer-open .drawer{transform:translateX(0);}
body.drawer-open{overflow:hidden;}
.drawer-close{
  width:38px;height:38px;border:1px solid rgba(255,255,255,.2);background:transparent;
  border-radius:10px;color:#fff;font-size:18px;cursor:pointer;line-height:1;
}
.drawer-title{font-size:12px;letter-spacing:.08em;color:rgba(255,255,255,.5);margin:22px 0 10px;}
.drawer-nav a{
  display:flex;align-items:center;min-height:46px;
  color:rgba(255,255,255,.82);font-size:15px;
  border-bottom:1px solid rgba(255,255,255,.09);
}
.drawer-nav a.is-active{color:#fff;font-weight:600;}
.drawer-hot{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px;}
.drawer-hot a{
  padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.08);
  color:rgba(255,255,255,.78);font-size:12.5px;min-height:32px;display:inline-flex;align-items:center;
}
.drawer-cta{margin-top:24px;display:flex;flex-direction:column;gap:10px;}

/* ---------- 面包屑 ---------- */
.crumbs{padding:22px 0 0;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-3);}
.crumbs li{display:inline-flex;align-items:center;gap:8px;min-width:0;}
.crumbs li+li::before{content:"/";color:var(--line);}
.crumbs a{color:var(--text-2);transition:color var(--t-fast) var(--ease);}
.crumbs a:hover{color:var(--accent);}
.crumbs .crumb-now{
  color:var(--text-3);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* ---------- 文章头 ---------- */
.article-head{padding:26px 0 12px;}
.article-head .badge{margin-bottom:16px;}
.article-h1{
  font-size:clamp(26px,3.3vw,42px);
  font-weight:800;letter-spacing:-.02em;line-height:1.22;
  color:var(--ink);
  max-width:20ch;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  margin-top:18px;font-size:13.5px;color:var(--text-3);
}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--line);}
.rule{height:1px;background:var(--line);margin:28px 0 0;}

/* ---------- 布局 ---------- */
.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;
  padding:44px 0 96px;align-items:start;
}
.layout-main{min-width:0;max-width:760px;}

/* ---------- 正文排版 ---------- */
.article-body{font-size:17px;line-height:1.9;color:var(--text);}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;
  font-size:clamp(21px,2.2vw,27px);font-weight:700;
  margin:48px 0 18px;padding-left:16px;line-height:1.35;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;
  background:var(--accent);border-radius:2px;
}
.article-body h3{font-size:20px;font-weight:600;margin:34px 0 12px;}
.article-body h4{font-size:17.5px;font-weight:600;margin:26px 0 10px;}
.article-body a{color:var(--teal);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--accent);}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:0;}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:.55em;line-height:1.9;}
.article-body ul li::before{
  content:"";position:absolute;left:6px;top:.78em;width:6px;height:6px;border-radius:2px;
  background:var(--accent);opacity:.75;
}
.article-body ol{counter-reset:ol-n;}
.article-body ol li{counter-increment:ol-n;padding-left:30px;}
.article-body ol li::before{
  content:counter(ol-n);
  position:absolute;left:0;top:0;
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:14px;font-weight:700;color:var(--accent);
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;
  background:var(--surface-2);
  border-left:3px solid var(--line);
  border-radius:0 var(--r-card) var(--r-card) 0;
  color:var(--text-2);font-style:normal;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;border:1px solid var(--line);margin:26px 0 10px;width:100%;height:auto;}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-bottom:26px;}
.article-body table{
  margin:26px 0;font-size:15px;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;
}
.article-body thead th{
  background:var(--ink);color:#F7F4EF;font-weight:600;text-align:left;
  padding:12px 16px;font-size:14.5px;
}
.article-body tbody td{padding:12px 16px;border-top:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:var(--surface-2);}
.article-body pre{
  margin:26px 0;padding:18px 20px;border-radius:var(--r-card);
  background:var(--surface-2);border:1px solid var(--line);
  overflow-x:auto;font-size:14px;line-height:1.7;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.92em;background:var(--surface-2);padding:2px 6px;border-radius:6px;
}
.article-body pre code{background:none;padding:0;}
.article-body hr{border:0;height:1px;background:var(--line);margin:40px 0;}

/* 内联会员引导 */
.inline-vip{
  margin:30px 0;padding:20px 22px;
  background:var(--surface-2);
  border-left:3px solid var(--accent);
  border-radius:0 var(--r-card) var(--r-card) 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
}
.inline-vip p{margin:0;font-size:15px;line-height:1.7;color:var(--text-2);max-width:52ch;}
.inline-vip strong{color:var(--text);font-weight:600;}

/* 空态 */
.empty-state{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:48px 28px;text-align:center;box-shadow:var(--e1);
}
.empty-state .empty-ico{
  width:54px;height:54px;margin:0 auto 16px;border-radius:999px;
  background:var(--surface-2);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--text-3);
}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--text-2);max-width:46ch;margin:0 auto 22px;font-size:15.5px;}

/* ---------- 侧栏 ---------- */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--e1);
}
.side-card h3{
  font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--text-3);
  margin-bottom:14px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow-y:auto;}
.toc-list a{
  display:block;padding:7px 10px;border-radius:8px;
  font-size:14px;color:var(--text-2);line-height:1.55;
  border-left:2px solid transparent;
  transition:background-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.toc-list a:hover{background:var(--surface-2);color:var(--text);}
.toc-list a.is-current{background:var(--accent-soft);color:var(--accent);border-left-color:var(--accent);font-weight:600;}
.toc-list a.lv3{padding-left:22px;font-size:13.5px;}
.toc-empty{font-size:13.5px;color:var(--text-3);}
.toc-toggle{
  display:none;width:100%;justify-content:space-between;align-items:center;
  background:none;border:0;cursor:pointer;padding:0;color:var(--text-3);
  font-size:13px;font-weight:700;letter-spacing:.06em;min-height:44px;
}
.toc-card.is-collapsed .toc-list,
.toc-card.is-collapsed .toc-empty{display:none;}
.vip-card{
  background:var(--ink);border-color:rgba(255,255,255,.12);color:#F7F4EF;
  box-shadow:none;
}
.vip-card h3{color:rgba(255,255,255,.55);}
.vip-card p{font-size:14.5px;line-height:1.75;color:rgba(255,255,255,.78);margin-bottom:16px;}
.vip-card .btn{width:100%;}
.vip-list{margin:0 0 16px;display:flex;flex-direction:column;gap:9px;}
.vip-list li{display:flex;gap:9px;font-size:14px;color:rgba(255,255,255,.8);line-height:1.6;}
.vip-list .tick{
  flex:0 0 16px;width:16px;height:16px;margin-top:5px;border-radius:999px;
  background:rgba(226,84,44,.22);color:#F0A48E;
  display:inline-flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;
}

/* ---------- 标签区 ---------- */
.tag-block{margin-top:44px;padding-top:26px;border-top:1px solid var(--line);}
.tag-block h3{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--text-3);margin-bottom:14px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- 延伸阅读 ---------- */
.duo{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;
  margin-top:24px;
}
.duo a{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--e1);
  transition:transform var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease);
}
.duo a:hover{transform:translateY(-2px);box-shadow:var(--e2);border-color:#D9D2C4;}
.duo .duo-dir{font-size:12px;letter-spacing:.08em;color:var(--text-3);display:block;margin-bottom:8px;}
.duo .duo-title{font-size:16.5px;font-weight:600;line-height:1.5;color:var(--ink);}

/* ---------- 相关推荐 ---------- */
.section{padding:0 0 0;}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  margin:72px 0 24px;
}
.section-head h2{font-size:clamp(21px,2.2vw,27px);font-weight:700;}
.section-head .eyebrow{font-size:12px;letter-spacing:.08em;color:var(--text-3);display:block;margin-bottom:8px;}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--e1);
  transition:transform var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--e2);}
.card-cover{position:relative;aspect-ratio:16/10;background:var(--surface-2);overflow:hidden;}
.card-cover img{width:100%;height:100%;object-fit:cover;}
.card-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body .badge{align-self:flex-start;}
.card h3{font-size:16.5px;font-weight:600;line-height:1.5;color:var(--ink);}
.card p{font-size:14px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card .meta{font-size:12.5px;color:var(--text-3);margin-top:auto;font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- 深色 CTA ---------- */
.cta-band{
  position:relative;margin-top:88px;
  background:var(--ink);color:#F7F4EF;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.14;
}
.cta-inner{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  padding:60px 0;
}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;color:#FFF;margin-bottom:12px;}
.cta-inner p{font-size:15px;color:rgba(255,255,255,.74);max-width:52ch;line-height:1.8;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.plan-chips{display:inline-flex;gap:8px;padding:5px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14);}
.plan-chips span{
  padding:7px 18px;border-radius:999px;font-size:13px;color:rgba(255,255,255,.72);
}
.plan-chips .on{background:var(--accent);color:#fff;font-weight:600;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;
  padding:64px 0 40px;
}
.footer-brand .brand{margin-bottom:16px;}
.footer-brand p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:34ch;}
.footer-col h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{
  font-size:13px;color:rgba(255,255,255,.68);
  transition:color var(--t-fast) var(--ease);
}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 34px;font-size:12.5px;color:rgba(255,255,255,.5);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity var(--t-slow) var(--ease),transform var(--t-slow) var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 24px;}
  .layout{grid-template-columns:minmax(0,1fr) 272px;gap:40px;}
}
@media (max-width:1023px){
  .nav-bottom{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-top-right .top-link{display:none;}
  .layout{grid-template-columns:minmax(0,1fr);gap:32px;padding:32px 0 72px;}
  .layout-main{max-width:none;}
  .sidebar{position:static;order:-1;}
  .toc-toggle{display:flex;}
  .toc-card.is-collapsed .toc-list{display:none;}
  .toc-card.is-collapsed .toc-empty{display:none;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding:48px 0 32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .article-body{font-size:16px;}
  .article-h1{max-width:none;}
  .duo{grid-template-columns:minmax(0,1fr);}
  .grid-3{grid-template-columns:minmax(0,1fr);}
  .section-head{margin:56px 0 20px;}
  .cta-inner{padding:48px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .nav-search input{width:180px;}
}
@media (max-width:519px){
  .container{padding:0 16px;}
  .brand-text{font-size:14px;}
  .brand-mark{width:26px;height:26px;flex-basis:26px;font-size:14px;}
  .article-meta{gap:8px 12px;font-size:13px;}
  .card-body{padding:16px;}
  .side-card{padding:16px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;padding:40px 0 26px;}
  .footer-bottom{flex-direction:column;}
  .crumbs .crumb-now{max-width:22ch;}
}

/* roulang page: category1 */
:root{
  --ink:#101215;
  --ink-2:#1B1F24;
  --accent:#E2542C;
  --accent-hover:#C8451F;
  --accent-soft:rgba(226,84,44,.08);
  --teal:#1F5F5B;
  --teal-soft:#E7F0EE;
  --bg:#F7F4EF;
  --surface:#FFFFFF;
  --surface-2:#F1EDE6;
  --line:#E5E0D6;
  --text:#14161A;
  --text-2:#5A6169;
  --text-3:#8A9099;
  --ok:#2F7D6B;
  --warn:#B8860B;
  --err:#C0392B;
  --disabled:#C8C6C0;
  --r-card:14px;
  --r-btn:10px;
  --r-badge:6px;
  --r-pill:999px;
  --e1:0 1px 2px rgba(16,18,20,.04);
  --e2:0 8px 24px rgba(16,18,20,.06);
  --e3:0 18px 48px rgba(16,18,20,.10);
  --t-fast:180ms;
  --t-base:240ms;
  --t-slow:320ms;
  --ease:cubic-bezier(.22,.61,.36,1);
  --sp-section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei","Inter",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:3px solid rgba(226,84,44,.28);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media(min-width:1440px){.container{max-width:1280px}}
.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}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:42px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:transform var(--t-fast) var(--ease),background-color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--e1)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(16,18,20,.22)}
.btn-ghost:hover{border-color:var(--ink);background:rgba(16,18,20,.04);transform:translateY(-1px)}
.btn-inverse{background:#fff;color:var(--ink)}
.btn-inverse:hover{background:#F1EDE6;transform:translateY(-1px)}
.btn-sm{height:34px;padding:0 14px;font-size:13px;border-radius:9px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:var(--disabled);color:#fff;cursor:not-allowed;transform:none;box-shadow:none}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent)}
.btn-text .arrow{transition:transform var(--t-base) var(--ease)}
.btn-text:hover .arrow{transform:translateX(3px)}
.btn-text:hover{color:var(--accent-hover)}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink);
  color:rgba(255,255,255,.74);
}
.topbar{max-height:44px;overflow:hidden;transition:max-height var(--t-base) var(--ease)}
.site-header.is-scrolled .topbar{max-height:0}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:44px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:15px;letter-spacing:.01em}
.brand-mark{
  width:26px;height:26px;border-radius:8px;background:var(--accent);
  display:grid;place-items:center;font-size:13px;font-weight:800;color:#fff;flex:0 0 auto;
}
.brand-text{white-space:nowrap}
.topbar-actions{display:flex;align-items:center;gap:14px}
.top-link{font-size:13px;color:rgba(255,255,255,.7);position:relative}
.top-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;background:currentColor;
  transform:scaleX(0);transform-origin:left;transition:transform var(--t-base) var(--ease);
}
.top-link:hover{color:#fff}
.top-link:hover::after{transform:scaleX(1)}
.icon-btn{
  width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  color:rgba(255,255,255,.78);transition:background-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.12);color:#fff}
.channel-bar{border-top:1px solid rgba(255,255,255,.12);transition:box-shadow var(--t-base) var(--ease)}
.site-header.is-scrolled .channel-bar{box-shadow:var(--e2)}
.channel-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:50px;transition:height var(--t-base) var(--ease)}
.site-header.is-scrolled .channel-inner{height:56px}
.channel-brand{display:none;align-items:center;gap:9px;color:#fff;font-size:14px;font-weight:800;white-space:nowrap}
.channel-brand .brand-mark{width:24px;height:24px;font-size:12px}
.site-header.is-scrolled .channel-brand{display:flex}
.channel-nav{display:flex;align-items:center;height:100%;gap:2px}
.channel-link{
  position:relative;display:inline-flex;align-items:center;height:100%;padding:0 14px;
  font-size:15px;color:rgba(255,255,255,.74);white-space:nowrap;
  transition:color var(--t-base) var(--ease);
}
.channel-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t-base) var(--ease);
}
.channel-link:hover{color:#fff}
.channel-link:hover::after{transform:scaleX(1)}
.channel-link.is-active{color:#fff;font-weight:600}
.channel-link.is-active::after{transform:scaleX(1)}
.channel-extra{display:flex;align-items:center;gap:10px}
.hot-chip{
  font-size:12px;padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.76);
  transition:background-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease);
}
.hot-chip:hover{background:rgba(255,255,255,.18);color:#fff}
.site-header.is-scrolled .channel-extra{display:none}
.nav-search{display:flex;align-items:center}
.nav-search input{
  width:250px;height:32px;padding:0 14px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.08);color:#fff;
  font-size:13px;outline:none;
  transition:background-color var(--t-base) var(--ease),border-color var(--t-base) var(--ease),color var(--t-base) var(--ease);
}
.nav-search input::placeholder{color:rgba(255,255,255,.5)}
.nav-search input:focus{background:#fff;color:var(--text);border-color:var(--accent);box-shadow:0 0 0 3px rgba(226,84,44,.28)}
.menu-toggle{display:none;width:40px;height:40px;border-radius:10px;align-items:center;justify-content:center}
.menu-toggle:hover{background:rgba(255,255,255,.12)}
.menu-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px;
}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(16,18,20,.5);opacity:0;visibility:hidden;
  z-index:80;transition:opacity var(--t-base) var(--ease),visibility var(--t-base) var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;background:var(--surface);
  z-index:90;transform:translateX(100%);transition:transform var(--t-slow) var(--ease);
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;box-shadow:var(--e3);
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-head .brand-text{font-size:14px;font-weight:800;color:var(--ink)}
.drawer-close{width:36px;height:36px;border-radius:10px;font-size:22px;line-height:1;color:var(--text-2);display:grid;place-items:center}
.drawer-close:hover{background:var(--surface-2);color:var(--ink)}
.drawer-nav{display:flex;flex-direction:column;margin:14px 0}
.drawer-nav a{padding:13px 10px;border-radius:10px;font-size:15px;color:var(--text-2);min-height:44px;display:flex;align-items:center}
.drawer-nav a:hover{background:var(--surface-2);color:var(--ink)}
.drawer-nav a.is-active{background:var(--accent-soft);color:var(--accent);font-weight:600}
.drawer-hot{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.drawer-hot a{font-size:12px;padding:6px 12px;border-radius:var(--r-pill);background:var(--surface-2);color:var(--text-2)}
.drawer-note{font-size:12px;color:var(--text-3);margin-top:12px}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--surface);border-bottom:1px solid var(--line)}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);height:48px;overflow:hidden}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:#C8C6C0}
.crumb .current{color:var(--text);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ---------- 页头 ---------- */
.page-head{position:relative;background:var(--surface);border-bottom:1px solid var(--line);overflow:hidden}
.page-head::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(var(--line) 1px,transparent 1px);
  background-size:22px 22px;opacity:.6;pointer-events:none;
}
.page-head .container{position:relative;padding-top:56px;padding-bottom:56px}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.08em;color:var(--text-3);
  margin-bottom:14px;
}
.page-head h1{
  font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.2;letter-spacing:-.02em;
  max-width:22em;
}
.page-head h1 .hl{color:var(--accent)}
.page-sub{margin-top:16px;font-size:17px;color:var(--text-2);max-width:44em}
.head-meta{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:var(--r-badge);
  font-size:12px;background:var(--teal-soft);color:var(--teal);font-weight:600;
}
.tag-outline{background:#fff;border:1px solid var(--line);color:var(--text-2);font-weight:500}
.head-search{margin-top:28px;max-width:420px}
.field{
  display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-btn);padding:0 14px;height:46px;
  transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease);
}
.field:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(226,84,44,.18)}
.field input{flex:1;border:0;outline:none;background:transparent;font-size:15px;color:var(--text);height:100%}
.field input::placeholder{color:var(--text-3)}
.field .field-hint{font-size:12px;color:var(--text-3)}
.field.is-error{border-color:var(--err)}
.field-error{display:block;margin-top:8px;font-size:13px;color:var(--err)}

/* ---------- 正文布局 ---------- */
.layout-two{
  display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;
  padding:64px 0 var(--sp-section);
  align-items:start;
}
.toc{
  position:sticky;top:120px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px 14px;box-shadow:var(--e1);
}
.toc-title{font-size:12px;letter-spacing:.08em;color:var(--text-3);padding:0 10px 10px;border-bottom:1px solid var(--line);margin-bottom:10px}
.toc-list a{
  display:block;padding:9px 10px;font-size:14px;color:var(--text-2);
  border-left:2px solid transparent;border-radius:0 8px 8px 0;min-height:40px;
  transition:background-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.toc-list a:hover{background:var(--surface-2);color:var(--ink)}
.toc-list a.is-current{border-left-color:var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:600}
.toc-tip{margin-top:14px;padding:12px 12px 0;border-top:1px solid var(--line);font-size:12px;color:var(--text-3);line-height:1.7}

.prose{min-width:0}
.prose section{scroll-margin-top:120px}
.prose section + section{margin-top:56px}
.prose h2{
  font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;
  padding-left:16px;border-left:3px solid var(--accent);
  margin-bottom:22px;
}
.prose h3{font-size:20px;font-weight:600;margin:32px 0 12px;line-height:1.5}
.prose p{font-size:16.5px;line-height:1.9;color:#22262C;margin-bottom:1.2em}
.prose strong{color:var(--ink)}
.lede{
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:var(--r-card);padding:24px 26px;box-shadow:var(--e1);margin-bottom:44px;
}
.lede p{margin-bottom:0;color:var(--text-2);font-size:16px}
.prose ul.dot{margin:0 0 1.4em;padding-left:0}
.prose ul.dot li{position:relative;padding-left:22px;line-height:1.9;margin-bottom:10px;color:#22262C}
.prose ul.dot li::before{
  content:"";position:absolute;left:4px;top:.82em;width:7px;height:7px;border-radius:2px;
  background:var(--teal);
}
figure{margin:28px 0}
figure img{width:100%;border-radius:12px;border:1px solid var(--line);object-fit:cover;background:var(--surface-2)}
figure.wide img{aspect-ratio:16/9}
figure.side{max-width:44%;float:right;margin:8px 0 20px 28px}
figcaption{margin-top:10px;font-size:13px;color:var(--text-3);text-align:center}
.quote{
  border-left:3px solid var(--line);background:var(--surface-2);border-radius:0 12px 12px 0;
  padding:18px 22px;margin:24px 0;color:var(--text-2);font-size:15.5px;
}
.checklist{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;margin:26px 0;box-shadow:var(--e1);
}
.checklist h3{margin-top:0}
.checklist ul li{
  display:flex;gap:12px;align-items:flex-start;padding:11px 0;border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--text-2);line-height:1.75;
}
.checklist ul li:last-child{border-bottom:0}
.tick{
  flex:0 0 auto;width:20px;height:20px;border-radius:999px;background:var(--teal-soft);
  color:var(--teal);display:grid;place-items:center;font-size:12px;font-weight:700;margin-top:5px;
}
.marks-note{font-size:13px;color:var(--text-3);margin-top:14px}

/* ---------- 相关入口卡 ---------- */
.related{margin-top:80px}
.block-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.block-head h2{font-size:clamp(22px,2.2vw,28px);font-weight:700;line-height:1.3}
.block-head p{font-size:14px;color:var(--text-3);margin-top:8px}
.link-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.link-card{
  display:flex;flex-direction:column;gap:12px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);padding:24px;
  box-shadow:var(--e1);
  transition:transform var(--t-base) var(--ease),box-shadow var(--t-base) var(--ease),border-color var(--t-base) var(--ease);
  min-height:44px;
}
.link-card:hover{transform:translateY(-2px);box-shadow:var(--e2);border-color:#D8D1C4}
.link-card .tag{align-self:flex-start}
.link-card h3{font-size:18px;font-weight:600;line-height:1.5}
.link-card p{font-size:14px;color:var(--text-2);line-height:1.8;margin:0}
.link-card .btn-text{margin-top:auto}

/* ---------- FAQ ---------- */
.faq{margin-top:80px}
.faq-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--e1)}
.faq-item + .faq-item{border-top:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:16px;
  padding:20px 24px;font-size:16.5px;font-weight:600;color:var(--ink);min-height:44px;
  transition:background-color var(--t-fast) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--surface-2)}
.faq-item summary .q{flex:1}
.faq-item summary .chev{
  flex:0 0 auto;width:22px;height:22px;color:var(--text-3);
  transition:transform var(--t-base) var(--ease),color var(--t-base) var(--ease);
}
.faq-item[open] summary .chev{transform:rotate(180deg);color:var(--accent)}
.faq-item .a{padding:0 24px 22px;font-size:15.5px;line-height:1.85;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;background:var(--ink);color:#fff;overflow:hidden;
  border-radius:var(--r-card);margin-top:72px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;opacity:.22;
}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(16,18,20,.86),rgba(16,18,20,.5))}
.cta-inner{position:relative;z-index:2;padding:52px 48px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35}
.cta-inner p{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.7);max-width:46em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);margin-top:96px}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
  padding:64px 0 40px;
}
.footer-brand .brand{font-size:15px}
.footer-brand p{margin-top:16px;font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.62);max-width:34em}
.footer-col h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{font-size:13.5px;color:rgba(255,255,255,.7);min-height:auto;transition:color var(--t-fast) var(--ease)}
.footer-col ul a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 30px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.55);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity var(--t-slow) var(--ease),transform var(--t-slow) var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 断点 ---------- */
@media(max-width:1199px){
  .container{padding:0 24px}
  .layout-two{grid-template-columns:210px minmax(0,1fr);gap:36px}
}
@media(max-width:1023px){
  .topbar{display:none}
  .channel-inner{height:56px;justify-content:space-between}
  .site-header.is-scrolled .channel-inner{height:56px}
  .channel-brand{display:flex}
  .channel-nav{display:none}
  .channel-extra{display:none}
  .menu-toggle{display:flex;margin-left:8px}
  .layout-two{grid-template-columns:1fr;padding:40px 0 72px}
  .toc{position:static;top:auto;padding:16px}
  .toc-list{display:flex;flex-wrap:wrap;gap:6px}
  .toc-list a{border-left:0;border-radius:var(--r-pill);background:var(--surface-2);padding:7px 14px;min-height:38px}
  .toc-list a.is-current{background:var(--accent-soft)}
  .toc-tip{display:none}
  .link-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
  figure.side{max-width:100%;float:none;margin:24px 0}
}
@media(max-width:767px){
  body{font-size:15.5px}
  .page-head .container{padding-top:36px;padding-bottom:36px}
  .page-sub{font-size:15.5px}
  .prose p{font-size:15.5px}
  .prose h2{font-size:23px;padding-left:12px}
  .prose h3{font-size:18px}
  .faq-item summary{padding:16px 18px;font-size:15.5px}
  .faq-item .a{padding:0 18px 18px;font-size:15px}
  .cta-inner{padding:36px 24px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{justify-content:flex-start}
  :root{--sp-section:64px}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .page-head h1{font-size:27px}
  .prose h2{font-size:21px}
  .link-card{padding:18px}
  .lede{padding:18px 18px}
  .cta-inner{padding:30px 18px}
  .head-search{max-width:100%}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#101215;--ink-2:#1B1F24;--accent:#E2542C;--accent-hover:#C8451F;
  --accent-soft:rgba(226,84,44,.08);--teal:#1F5F5B;--teal-soft:#E7F0EE;
  --bg:#F7F4EF;--surface:#FFFFFF;--surface-2:#F1EDE6;--line:#E5E0D6;
  --text:#14161A;--text-2:#5A6169;--text-3:#8A9099;
  --ok:#2F7D6B;--warn:#B8860B;--err:#C0392B;--disabled:#C8C6C0;
  --r-card:14px;--r-btn:10px;--r-input:10px;--r-badge:6px;
  --e1:0 1px 2px rgba(16,18,20,.04);--e2:0 8px 24px rgba(16,18,20,.06);--e3:0 18px 48px rgba(16,18,20,.10);
  --t-fast:180ms;--t-mid:240ms;--t-slow:320ms;--ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16.5px;line-height:1.85;font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:12px;object-fit:cover}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0 0 1.15em}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid rgba(226,84,44,.28);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15.5px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background var(--t-mid) var(--ease),transform var(--t-fast) var(--ease),border-color var(--t-mid) var(--ease),color var(--t-mid) var(--ease);
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-inverse{background:#fff;color:var(--ink)}
.btn-inverse:hover{background:var(--surface-2);transform:translateY(-1px)}
.btn-sm{height:32px;padding:0 14px;font-size:13.5px;border-radius:9px}
.btn[disabled],.btn.is-disabled{background:var(--disabled);color:#fff;border-color:transparent;cursor:not-allowed;transform:none}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-weight:600;font-size:14.5px}
.text-link .arrow{transition:transform var(--t-fast) var(--ease)}
.text-link:hover .arrow{transform:translateX(3px)}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 9px;border-radius:var(--r-badge);
  font-size:12.5px;font-weight:600;letter-spacing:.02em}
.badge-teal{background:var(--teal-soft);color:var(--teal)}
.badge-accent{background:var(--accent-soft);color:var(--accent)}
.chip{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);font-size:13.5px;color:var(--text-2)}
.chip.is-on{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.eyebrow{font-size:12px;letter-spacing:.08em;color:var(--text-3);text-transform:uppercase}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:var(--ink);color:#fff;
  transition:box-shadow var(--t-mid) var(--ease)}
.site-header.is-stuck{box-shadow:var(--e2)}
.topbar{border-bottom:1px solid rgba(255,255,255,.12)}
.topbar-inner{display:flex;align-items:center;gap:18px;height:40px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:26px;height:26px;border-radius:8px;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;letter-spacing:0}
.brand-text{display:flex;flex-direction:column;line-height:1.15;font-weight:700}
.brand-line1{font-size:13px;letter-spacing:.02em}
.brand-line2{font-size:13px;color:rgba(255,255,255,.72);font-weight:600}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:16px}
.top-link{font-size:13px;color:rgba(255,255,255,.72);transition:color var(--t-fast) var(--ease)}
.top-link:hover{color:#fff}
.channel-bar{border-bottom:1px solid rgba(255,255,255,.12)}
.channel-inner{display:flex;align-items:center;gap:20px;height:48px}
.channel-nav{display:flex;align-items:center;gap:22px;overflow-x:auto;scrollbar-width:none}
.channel-nav::-webkit-scrollbar{display:none}
.channel-link{position:relative;font-size:14.5px;color:rgba(255,255,255,.78);padding:14px 0;white-space:nowrap;
  transition:color var(--t-fast) var(--ease)}
.channel-link::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform var(--t-mid) var(--ease)}
.channel-link:hover{color:#fff}
.channel-link:hover::after{transform:scaleX(1)}
.channel-link.is-active{color:#fff;font-weight:700}
.channel-link.is-active::after{transform:scaleX(1)}
.channel-aside{margin-left:auto;display:flex;align-items:center;gap:10px}
.hot-chip{display:inline-flex;align-items:center;height:26px;padding:0 11px;border-radius:999px;
  background:rgba(255,255,255,.08);color:rgba(255,255,255,.78);font-size:12px;white-space:nowrap}
.hot-chip:hover{background:rgba(255,255,255,.16);color:#fff}
.nav-search{width:260px;position:relative}
.nav-search input{width:100%;height:34px;border-radius:var(--r-input);border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.08);padding:0 12px;font-size:13.5px;color:#fff;transition:all var(--t-mid) var(--ease)}
.nav-search input::placeholder{color:rgba(255,255,255,.5)}
.nav-search input:focus{outline:none;background:#fff;color:var(--text);border-color:var(--accent);box-shadow:0 0 0 3px rgba(226,84,44,.25)}
.nav-toggle{display:none;width:40px;height:36px;border:1px solid rgba(255,255,255,.2);background:transparent;
  border-radius:9px;color:#fff;cursor:pointer;align-items:center;justify-content:center}
.site-header.is-stuck .topbar{display:none}
.site-header.is-stuck .channel-inner{height:56px}
.site-header.is-stuck .hot-chip,.site-header.is-stuck .nav-search{display:none}
.site-header.is-stuck .brand-line1,.site-header.is-stuck .brand-line2{font-size:12.5px}

/* 移动抽屉 */
.drawer{position:fixed;top:0;right:0;width:300px;max-width:86vw;height:100%;background:var(--ink);color:#fff;
  z-index:90;padding:24px 22px;transform:translateX(102%);transition:transform var(--t-slow) var(--ease);overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer h4{font-size:13px;color:rgba(255,255,255,.55);margin:18px 0 10px;letter-spacing:.06em}
.drawer a{display:block;padding:11px 0;font-size:15px;color:rgba(255,255,255,.85);border-bottom:1px solid rgba(255,255,255,.08)}
.drawer a:hover{color:#fff}
.drawer-close{position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:9px;border:1px solid rgba(255,255,255,.2);
  background:transparent;color:#fff;cursor:pointer}
.mask{position:fixed;inset:0;background:rgba(16,18,20,.5);z-index:80;opacity:0;visibility:hidden;transition:opacity var(--t-mid) var(--ease),visibility var(--t-mid)}
.mask.is-show{opacity:1;visibility:visible}

/* ---------- 面包屑 + 页头 ---------- */
.crumb{background:var(--surface);border-bottom:1px solid var(--line)}
.crumb-inner{display:flex;align-items:center;gap:8px;height:48px;font-size:13.5px;color:var(--text-3);flex-wrap:nowrap;overflow:hidden}
.crumb-inner a{color:var(--text-2)}
.crumb-inner a:hover{color:var(--accent)}
.crumb-sep{color:var(--text-3)}
.crumb-current{color:var(--text);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.page-head{position:relative;background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;color:#fff;padding:76px 0 68px;overflow:hidden}
.page-head::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,18,20,.74),rgba(16,18,20,.86))}
.page-head .container{position:relative;z-index:2}
.page-head h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.2;letter-spacing:-.02em;max-width:16em}
.page-head .lead{margin-top:16px;font-size:17px;color:rgba(255,255,255,.8);max-width:40em}
.head-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.head-tags .tag{height:30px;display:inline-flex;align-items:center;padding:0 13px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);font-size:12.5px;color:rgba(255,255,255,.85)}
.head-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.page-head .btn-ghost{border-color:rgba(255,255,255,.5);color:#fff}
.page-head .btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff}

/* ---------- 板块 ---------- */
section{padding:88px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3}
.section-head p{color:var(--text-2);font-size:15px;margin:8px 0 0;max-width:52em}
.band{background:var(--surface)}
.band-alt{background:var(--bg)}

/* ---------- 步骤流程 ---------- */
.step-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:8px}
.step-item{position:relative;padding:0 26px 0 0}
.step-item::after{content:"";position:absolute;top:25px;left:66px;right:6px;height:2px;background:var(--line)}
.step-item:last-child::after{display:none}
.step-dot{width:52px;height:52px;border-radius:999px;display:flex;align-items:center;justify-content:center;
  background:var(--surface);border:2px solid var(--line);color:var(--text-3);font-weight:700;font-size:16px;position:relative;z-index:2}
.step-item.is-current .step-dot{background:var(--accent);border-color:var(--accent);color:#fff}
.step-item h3{font-size:19px;font-weight:600;margin:18px 0 8px}
.step-item p{font-size:14.5px;color:var(--text-2);line-height:1.8;margin:0}
.step-state{margin-top:12px;font-size:12.5px;color:var(--text-3)}
.step-item.is-current .step-state{color:var(--accent);font-weight:600}

/* ---------- 编号列表 + 侧栏 ---------- */
.guide-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:44px;align-items:start}
.num-list{border-top:1px solid var(--line)}
.num-item{display:grid;grid-template-columns:74px minmax(0,1fr) 132px;gap:22px;align-items:center;
  padding:24px 18px;border-bottom:1px solid var(--line);border-radius:var(--r-card);
  transition:background var(--t-mid) var(--ease),transform var(--t-fast) var(--ease)}
.num-item:hover{background:var(--surface-2);transform:translateY(-2px)}
.num-index{font-size:34px;font-weight:800;color:var(--text-3);letter-spacing:-.03em;line-height:1}
.num-body h3{font-size:20px;font-weight:600;margin-bottom:8px}
.num-body p{font-size:14.5px;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.num-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.num-thumb{position:relative}
.num-thumb img{width:132px;height:84px;border:1px solid var(--line)}
.num-link{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--accent);font-weight:600;margin-top:10px}
.num-link .arrow{transition:transform var(--t-fast) var(--ease)}
.num-item:hover .num-link .arrow{transform:translateX(3px)}

.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--e1)}
.side-sticky{position:sticky;top:calc(56px + 24px)}
.side-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.side-card .side-note{font-size:13.5px;color:var(--text-3);line-height:1.75;margin:14px 0 0}
.side-list{margin-top:20px;border-top:1px solid var(--line);padding-top:8px}
.side-list a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 0;
  font-size:14.5px;color:var(--text-2);border-bottom:1px solid var(--line)}
.side-list a:last-child{border-bottom:none}
.side-list a:hover{color:var(--accent)}
.side-list .arrow{transition:transform var(--t-fast) var(--ease);color:var(--text-3)}
.side-list a:hover .arrow{transform:translateX(3px);color:var(--accent)}
.side-card .btn{width:100%;margin-top:18px}
.side-tip{margin-top:16px;background:var(--accent-soft);border-left:3px solid var(--accent);
  border-radius:8px;padding:12px 14px;font-size:13px;color:var(--text-2);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);margin-bottom:14px;overflow:hidden;
  transition:box-shadow var(--t-mid) var(--ease)}
.faq-item[open]{box-shadow:var(--e2)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .caret{flex:0 0 auto;width:22px;height:22px;border-radius:999px;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--text-3);transition:transform var(--t-mid) var(--ease)}
.faq-item[open] summary .caret{transform:rotate(180deg);color:var(--accent);border-color:var(--accent)}
.faq-item .faq-body{padding:0 24px 22px;font-size:15.5px;color:var(--text-2);line-height:1.8;border-top:1px solid var(--line);padding-top:16px}

/* ---------- 深色 CTA ---------- */
.cta-band{position:relative;background-color:var(--ink);color:#fff;overflow:hidden;border-radius:0}
.cta-band::before{content:"";position:absolute;inset:0;background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;opacity:.2}
.cta-band::after{content:"";position:absolute;inset:0;background:rgba(16,18,20,.62)}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3}
.cta-inner p{margin:12px 0 0;font-size:15px;color:rgba(255,255,255,.72);max-width:44em}
.cta-side{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.cta-chips{display:flex;gap:10px}
.cta-chips .chip{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.18);color:rgba(255,255,255,.82)}
.cta-chips .chip.is-on{background:var(--accent);border-color:var(--accent);color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:#fff;padding:70px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:13.5px;color:rgba(255,255,255,.66);line-height:1.8;max-width:30em;margin:0}
.footer-col h4{font-size:14px;margin-bottom:14px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:13px;color:rgba(255,255,255,.7);transition:color var(--t-fast) var(--ease)}
.footer-col a:hover{color:#fff}
.footer-bottom{margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.55)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity var(--t-slow) var(--ease),transform var(--t-slow) var(--ease)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- 断点 ---------- */
@media (max-width:1199px){
  .container{padding:0 24px}
  .guide-layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px}
}
@media (max-width:1023px){
  .nav-toggle{display:flex}
  .topbar-right{display:none}
  .hot-chip,.nav-search{display:none}
  .channel-inner{height:56px}
  .guide-layout{grid-template-columns:1fr}
  .side-sticky{position:static}
  .step-flow{grid-template-columns:repeat(2,1fr);row-gap:34px}
  .step-item::after{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  section{padding:72px 0}
}
@media (max-width:767px){
  body{font-size:16px}
  .page-head{padding:58px 0 52px}
  .num-item{grid-template-columns:56px minmax(0,1fr);gap:16px;padding:20px 12px}
  .num-thumb{grid-column:1 / -1}
  .num-thumb img{width:100%;height:170px}
  .num-index{font-size:28px}
  .step-flow{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start}
  section{padding:56px 0}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .btn{height:46px;width:100%}
  .head-actions .btn{width:100%}
  .cta-side,.cta-side .btn{width:100%}
  .side-card{padding:20px}
  .faq-item summary{padding:16px 18px;font-size:16px}
  .faq-item .faq-body{padding:14px 18px 18px}
}

/* roulang page: category2 */
/* ============ 设计变量 ============ */
:root{
  --ink:#101215;--ink-2:#1B1F24;
  --accent:#E2542C;--accent-hover:#C8451F;--accent-soft:rgba(226,84,44,.08);
  --teal:#1F5F5B;--teal-soft:#E7F0EE;
  --bg:#F7F4EF;--surface:#FFFFFF;--surface-2:#F1EDE6;--line:#E5E0D6;
  --text:#14161A;--text-2:#5A6169;--text-3:#8A9099;
  --ok:#2F7D6B;--warn:#B8860B;--err:#C0392B;--disabled:#C8C6C0;
  --brass:#B08968;--silver:#9AA0A6;--gold:#C9A227;
  --r-card:14px;--r-btn:10px;--r-input:10px;--r-badge:6px;
  --e1:0 1px 2px rgba(16,18,20,.04);
  --e2:0 8px 24px rgba(16,18,20,.06);
  --e3:0 18px 48px rgba(16,18,20,.10);
  --t-fast:180ms cubic-bezier(.22,.61,.36,1);
  --t:240ms cubic-bezier(.22,.61,.36,1);
  --t-slow:320ms cubic-bezier(.22,.61,.36,1);
  --gap:24px;
}
/* ============ reset / base ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",Inter,system-ui,sans-serif;
  font-size:16px;line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--ink);text-decoration:none;transition:color var(--t-fast)}
a:hover{color:var(--accent)}
h1,h2,h3,h4,p,ul,ol,dl,figure{margin:0}
ul,ol{padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:3px solid rgba(226,84,44,.28);outline-offset:2px;border-radius:6px}
::selection{background:var(--accent-soft)}
/* ============ 布局工具 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--surface{background:var(--surface)}
.section--alt{background:var(--bg)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;letter-spacing:-.01em}
.section-head p{color:var(--text-2);font-size:15px;margin-top:8px;max-width:640px}
.eyebrow{font-size:12px;letter-spacing:.08em;color:var(--text-3);text-transform:uppercase;font-weight:600;margin-bottom:10px}
.lead{font-size:17px;color:var(--text-2);line-height:1.9}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  border:1px solid transparent;transition:background var(--t-fast),color var(--t-fast),border-color var(--t-fast),transform var(--t-fast),box-shadow var(--t-fast);
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:#fff;box-shadow:var(--e1)}
.btn-primary:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px);box-shadow:var(--e2)}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(16,18,20,.24)}
.btn-ghost:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-1px)}
.btn-inverse{background:#fff;color:var(--ink)}
.btn-inverse:hover{background:var(--surface-2);color:var(--ink);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn-outline-light:hover{border-color:#fff;color:#fff;transform:translateY(-1px)}
.btn-sm{height:34px;padding:0 16px;font-size:13px;border-radius:9px}
.btn-block{width:100%}
.btn:disabled,.btn[aria-disabled="true"]{background:var(--disabled);color:#fff;border-color:transparent;box-shadow:none;cursor:not-allowed;transform:none}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent);position:relative}
.btn-text .arrow{transition:transform var(--t-fast)}
.btn-text:hover .arrow{transform:translateX(3px)}
/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:90;background:var(--ink);color:#fff;transition:box-shadow var(--t),background var(--t)}
.site-header.is-scrolled{box-shadow:var(--e2)}
.topbar{background:var(--ink-2);border-bottom:1px solid rgba(255,255,255,.08)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:42px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;min-width:0}
.brand:hover{color:#fff}
.brand-mark{
  flex:none;width:28px;height:28px;border-radius:8px;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;letter-spacing:0
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:.01em;white-space:nowrap;transition:font-size var(--t)}
.brand-sub{font-size:12px;color:rgba(255,255,255,.55);border-left:1px solid rgba(255,255,255,.18);padding-left:10px;white-space:nowrap}
.topbar-actions{display:flex;align-items:center;gap:16px}
.icon-btn{width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.75);transition:background var(--t-fast),color var(--t-fast)}
.icon-btn:hover{background:rgba(255,255,255,.1);color:#fff}
.topbar-link{font-size:13px;color:rgba(255,255,255,.75);position:relative;padding:4px 0}
.topbar-link::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform var(--t)}
.topbar-link:hover{color:#fff}
.topbar-link:hover::after{transform:scaleX(1)}
.navbar{border-bottom:1px solid rgba(255,255,255,.12);transition:height var(--t)}
.navbar-inner{display:flex;align-items:center;gap:24px;height:50px;transition:height var(--t)}
.channel-nav{display:flex;align-items:center;gap:4px;flex:none}
.channel-link{
  position:relative;display:flex;align-items:center;height:50px;padding:0 14px;
  font-size:15px;color:rgba(255,255,255,.72);transition:color var(--t-fast)
}
.channel-link::after{content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform var(--t)}
.channel-link:hover{color:#fff}
.channel-link:hover::after{transform:scaleX(1)}
.channel-link.is-active{color:#fff;font-weight:600}
.channel-link.is-active::after{transform:scaleX(1)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:14px;min-width:0}
.hotwords{display:flex;align-items:center;gap:8px}
.hot-chip{
  font-size:12px;color:rgba(255,255,255,.78);background:rgba(255,255,255,.08);
  padding:4px 11px;border-radius:999px;white-space:nowrap;transition:background var(--t-fast),color var(--t-fast)
}
.hot-chip:hover{background:rgba(255,255,255,.18);color:#fff}
.nav-search{position:relative;width:280px;flex:none}
.nav-search input{
  width:100%;height:34px;border-radius:var(--r-input);border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.08);color:#fff;padding:0 36px 0 12px;font-size:13px;transition:background var(--t-fast),border-color var(--t-fast),box-shadow var(--t-fast)
}
.nav-search input::placeholder{color:rgba(255,255,255,.5)}
.nav-search input:focus{background:#fff;color:var(--ink);border-color:var(--accent);box-shadow:0 0 0 3px rgba(226,84,44,.24);outline:none}
.nav-search input:focus::placeholder{color:var(--text-3)}
.nav-search .search-btn{position:absolute;right:4px;top:3px;width:28px;height:28px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.7)}
.nav-search input:focus + .search-btn{color:var(--ink)}
.menu-toggle{display:none;width:40px;height:40px;border-radius:10px;color:#fff;align-items:center;justify-content:center}
.brand--mobile{display:none}
/* 滚动吸顶压缩 */
.site-header.is-scrolled .topbar{display:none}
.site-header.is-scrolled .navbar-inner{height:56px}
.site-header.is-scrolled .channel-link{height:56px}
.site-header.is-scrolled .hotwords,
.site-header.is-scrolled .nav-search{display:none}
.site-header.is-scrolled .brand-text{font-size:15px}
/* 抽屉 */
.drawer-overlay{position:fixed;inset:0;background:rgba(16,18,20,.5);opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:100}
.drawer{position:fixed;top:0;right:0;bottom:0;width:300px;max-width:88vw;background:var(--ink);color:#fff;z-index:110;transform:translateX(100%);transition:transform var(--t-slow);display:flex;flex-direction:column;padding:20px}
.drawer.is-open{transform:translateX(0)}
.drawer-overlay.is-open{opacity:1;visibility:visible}
body.is-locked{overflow:hidden}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.12)}
.drawer-head .brand-text{font-size:15px}
.drawer-close{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.8)}
.drawer-close:hover{background:rgba(255,255,255,.1);color:#fff}
.drawer-nav{display:flex;flex-direction:column;padding:14px 0;gap:2px}
.drawer-nav a{padding:12px 10px;border-radius:10px;color:rgba(255,255,255,.8);font-size:15px}
.drawer-nav a:hover,.drawer-nav a.is-active{background:rgba(255,255,255,.08);color:#fff}
.drawer-sub{font-size:12px;color:rgba(255,255,255,.45);letter-spacing:.08em;padding:16px 10px 8px}
.drawer-hot{display:flex;flex-wrap:wrap;gap:8px;padding:0 10px 18px}
.drawer-foot{margin-top:auto}
/* ============ 面包屑 ============ */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:rgba(255,255,255,.62)}
.breadcrumb a{color:rgba(255,255,255,.72)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.35)}
.breadcrumb .current{color:#fff;font-weight:600}
/* ============ 页头 ============ */
.page-hero{
  position:relative;color:#fff;overflow:hidden;
  background:var(--ink) url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  padding:52px 0 64px
}
.page-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(102deg,rgba(16,18,20,.94) 0%,rgba(16,18,20,.82) 46%,rgba(16,18,20,.58) 100%)}
.page-hero .container{position:relative;z-index:1}
.page-hero-inner{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:48px;align-items:end;margin-top:32px}
.page-hero h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.2;letter-spacing:-.02em;margin-bottom:16px}
.page-hero .hero-sub{font-size:17px;line-height:1.8;color:rgba(255,255,255,.82);max-width:600px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-tag{font-size:12px;padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);color:rgba(255,255,255,.86)}
.hero-search{background:rgba(16,18,20,.55);border:1px solid rgba(255,255,255,.16);border-radius:var(--r-card);padding:22px}
.hero-search h2{font-size:16px;font-weight:600;margin-bottom:6px}
.hero-search p{font-size:13px;color:rgba(255,255,255,.62);line-height:1.7;margin-bottom:14px}
.hero-search form{display:flex;gap:10px}
.hero-search input{
  flex:1;min-width:0;height:44px;border-radius:var(--r-input);border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.08);color:#fff;padding:0 14px;font-size:14px
}
.hero-search input::placeholder{color:rgba(255,255,255,.5)}
.hero-search input:focus{background:#fff;color:var(--ink);border-color:var(--accent);outline:none;box-shadow:0 0 0 3px rgba(226,84,44,.28)}
.hero-meta{display:flex;flex-wrap:wrap;gap:24px;margin-top:26px;font-size:13px;color:rgba(255,255,255,.6)}
.hero-meta b{display:block;font-size:22px;font-weight:700;color:#fff;line-height:1.3}
/* ============ 筛选 chip ============ */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:28px 0 8px}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 16px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);color:var(--text-2);font-size:14px;cursor:pointer;
  transition:background var(--t-fast),color var(--t-fast),border-color var(--t-fast),transform var(--t-fast)
}
.chip:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.chip.is-selected{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.chip-count{font-size:12px;color:var(--text-3)}
.chip.is-selected .chip-count{color:rgba(255,255,255,.8)}
/* ============ 卡片宫格 ============ */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.benefit-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--e1);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t)
}
.benefit-card:hover{transform:translateY(-2px);box-shadow:var(--e2);border-color:#DCD5C8}
.benefit-cover{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--surface-2)}
.benefit-cover img{width:100%;height:100%;object-fit:cover;border-bottom:1px solid var(--line);transition:transform var(--t-slow)}
.benefit-card:hover .benefit-cover img{transform:scale(1.03)}
.badge{
  position:absolute;top:12px;left:12px;font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--r-badge);
  background:var(--teal-soft);color:var(--teal)
}
.badge--member{background:var(--accent-soft);color:var(--accent)}
.benefit-body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1}
.benefit-body h3{font-size:20px;font-weight:600;line-height:1.45}
.benefit-body .desc{font-size:15px;color:var(--text-2);line-height:1.85;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.spec{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--surface-2)}
.spec-row{display:flex;justify-content:space-between;gap:12px;padding:9px 14px;font-size:13px;border-bottom:1px solid var(--line)}
.spec-row:last-child{border-bottom:0}
.spec-row span{color:var(--text-3)}
.spec-row b{font-weight:600;color:var(--text);text-align:right}
.benefit-foot{margin-top:auto;padding-top:4px}
/* ============ 对比表 ============ */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--r-card);background:var(--surface);
  overflow:auto;box-shadow:var(--e1);position:relative
}
table.compare{min-width:820px;font-size:15px}
table.compare caption{caption-side:bottom;text-align:left;padding:14px 20px;font-size:13px;color:var(--text-3)}
table.compare thead th{
  position:sticky;top:0;z-index:2;background:var(--ink);color:#fff;font-weight:600;font-size:14px;
  text-align:left;padding:15px 20px;white-space:nowrap
}
table.compare thead th:first-child{background:var(--ink-2)}
table.compare tbody th{
  text-align:left;font-weight:600;font-size:14px;padding:15px 20px;color:var(--text);
  position:sticky;left:0;background:var(--surface);border-right:1px solid var(--line);min-width:180px
}
table.compare tbody td{padding:15px 20px;color:var(--text-2);border-top:1px solid var(--line);vertical-align:top;min-width:180px}
table.compare tbody tr:nth-child(even) td{background:var(--surface-2)}
table.compare tbody tr:nth-child(even) th{background:var(--surface-2)}
table.compare tbody tr:hover td{background:var(--teal-soft)}
table.compare tbody tr:hover th{background:var(--teal-soft)}
table.compare .col-featured{background:var(--accent-soft);box-shadow:inset 0 0 0 2px var(--accent);position:relative}
table.compare thead th.col-featured{background:var(--accent);color:#fff;box-shadow:inset 0 0 0 2px var(--accent)}
.col-featured .tick{position:absolute;top:8px;right:12px;font-size:11px;font-weight:700;color:var(--accent);background:#fff;border-radius:999px;padding:1px 8px;border:1px solid var(--accent)}
table.compare thead th.col-featured .tick{display:none}
.tick-inline{display:inline-flex;align-items:center;gap:6px;color:var(--teal);font-weight:600}
.tick-inline svg{flex:none}
.dash{color:var(--text-3)}
/* ============ FAQ ============ */
.faq-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:0;overflow:hidden;transition:border-color var(--t-fast),box-shadow var(--t-fast)}
.faq-item:hover{border-color:#DCD5C8;box-shadow:var(--e1)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;font-size:16px;font-weight:600;line-height:1.6;
  display:flex;align-items:center;justify-content:space-between;gap:16px
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .caret{flex:none;width:20px;height:20px;color:var(--text-3);transition:transform var(--t)}
.faq-item[open] summary .caret{transform:rotate(180deg);color:var(--accent)}
.faq-item .answer{padding:0 24px 22px;font-size:15px;line-height:1.85;color:var(--text-2);border-top:1px solid var(--line);padding-top:16px;margin:0 24px 22px;padding-left:0;padding-right:0}
/* ============ CTA ============ */
.cta-band{
  position:relative;color:#fff;overflow:hidden;border-radius:0;
  background:var(--ink) url("/assets/images/backpic/back-3.png") center/cover no-repeat
}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(96deg,rgba(16,18,20,.95),rgba(16,18,20,.78))}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:40px;padding:64px 0}
.cta-inner h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.3;margin-bottom:12px}
.cta-inner p{color:rgba(255,255,255,.74);font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;flex:none}
.cycle{display:flex;gap:8px;padding:4px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16)}
.cycle-chip{font-size:13px;padding:6px 16px;border-radius:999px;color:rgba(255,255,255,.75);transition:background var(--t-fast),color var(--t-fast)}
.cycle-chip.is-selected{background:var(--accent);color:#fff;font-weight:600}
/* ============ 页脚 ============ */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:13px;line-height:1.9;color:rgba(255,255,255,.6);max-width:340px}
.footer-col h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:13px;color:rgba(255,255,255,.7);position:relative}
.footer-col a::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;background:rgba(255,255,255,.5);transform:scaleX(0);transform-origin:left;transition:transform var(--t)}
.footer-col a:hover{color:#fff}
.footer-col a:hover::after{transform:scaleX(1)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:20px 0 28px;display:flex;flex-wrap:wrap;
  align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:rgba(255,255,255,.5)
}
/* ============ 状态样式 ============ */
.skeleton{background:var(--surface-2);border-radius:8px;position:relative;overflow:hidden}
.skeleton::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.7),transparent);animation:shimmer 1.2s infinite}
@keyframes shimmer{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.empty-state{background:var(--surface-2);border:1px dashed var(--line);border-radius:var(--r-card);padding:36px 24px;text-align:center;color:var(--text-2)}
.empty-state strong{display:block;font-size:16px;color:var(--text);margin-bottom:6px}
.empty-state a{color:var(--accent);font-weight:600}
.error-bar{border:1px solid var(--err);background:rgba(192,57,43,.06);color:var(--err);border-radius:var(--r-card);padding:14px 18px;font-size:14px}
.notice-bar{border:1px solid var(--line);background:var(--surface);border-left:3px solid var(--accent);border-radius:10px;padding:14px 18px;font-size:14px;color:var(--text-2)}
/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity var(--t-slow),transform var(--t-slow)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}
/* ============ 响应式 ============ */
@media (min-width:1440px){.container{max-width:1280px}}
@media (max-width:1199px){
  .container{padding:0 24px}
  .page-hero-inner{grid-template-columns:1fr;align-items:start;gap:32px}
  .nav-search{width:220px}
}
@media (max-width:1023px){
  .menu-toggle{display:flex}
  .channel-nav,.hotwords,.nav-search{display:none}
  .navbar-inner{height:56px;justify-content:space-between}
  .brand--mobile{display:flex;align-items:center;gap:8px;color:#fff}
  .brand--mobile .brand-text{font-size:14px}
  .topbar-link,.brand-sub{display:none}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:28px;padding:56px 0}
  .section{padding:72px 0}
}
@media (max-width:767px){
  body{font-size:15.5px;line-height:1.8}
  .container{padding:0 16px}
  .grid-3{grid-template-columns:1fr}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .page-hero{padding:36px 0 48px}
  .hero-search{padding:18px}
  .hero-search form{flex-direction:column}
  .hero-search .btn{width:100%}
  .benefit-body{padding:18px}
  .spec-row{padding:8px 12px}
  .table-wrap{margin:0 -16px;border-radius:0;border-left:0;border-right:0}
  table.compare thead th,table.compare tbody td,table.compare tbody th{padding:12px 16px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-item .answer{margin:0 18px 18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}
@media (max-width:479px){
  .brand-text{font-size:13px}
  .page-hero h1{font-size:27px}
  .hero-meta{gap:16px}
  .hero-meta b{font-size:19px}
  .chip{height:34px;padding:0 13px;font-size:13px}
}