/* roulang page: index */
:root{
  --brand-500:#DE4A1A;
  --brand-600:#B8380E;
  --brand-050:#FCEDE7;
  --ink-900:#16181D;
  --ink-700:#34383F;
  --ink-500:#6B7078;
  --line:#E4DFD7;
  --bg:#F6F2EC;
  --bg-2:#FFFFFF;
  --accent:#C8F169;
  --accent-ink:#1A2A0F;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --shadow-sm:0 1px 2px rgba(22,24,29,.04),0 8px 24px rgba(22,24,29,.06);
  --shadow-md:0 2px 6px rgba(22,24,29,.06),0 16px 36px rgba(22,24,29,.10);
  --dur:.2s;
  --ease:ease-out;
  --font:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;background:var(--bg);color:var(--ink-900);font-family:var(--font);
  font-size:16px;line-height:1.85;letter-spacing:0;text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--ink-900);text-decoration:none;transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);}
a:hover{color:var(--brand-600);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 16px;}
h1,h2,h3,h4{margin:0 0 16px;letter-spacing:-.01em;}
h1{font-size:clamp(32px,5.2vw,54px);line-height:1.15;font-weight:800;}
h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:800;}
h3{font-size:20px;line-height:1.4;font-weight:700;}
button,input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container,.container-lg,.container-xl{width:100%;max-width:1200px!important;margin:0 auto;padding-left:24px;padding-right:24px;}
.container-narrow{max-width:1080px!important;}
.row{--bs-gutter-x:24px;--bs-gutter-y:24px;}
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;letter-spacing:.04em;color:var(--brand-600);text-transform:uppercase;margin-bottom:14px;}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--brand-500);display:inline-block;}
.lead{font-size:18px;line-height:1.8;color:var(--ink-700);max-width:42ch;}
.muted{color:var(--ink-500);font-size:14px;line-height:1.6;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.sec-head p{margin:0;max-width:60ch;color:var(--ink-500);font-size:15px;}
.num-tab{font-variant-numeric:tabular-nums;}

.btn-brand,.btn-ghost,.btn-soft{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:700;
  border:1.5px solid transparent;cursor:pointer;line-height:1.4;text-align:center;
}
.btn-brand{background:var(--brand-500);color:#fff;box-shadow:var(--shadow-sm);}
.btn-brand:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md);}
.btn-brand:active{transform:translateY(0);box-shadow:var(--shadow-sm);}
.btn-ghost{background:transparent;border-color:var(--ink-900);color:var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:var(--bg);}
.btn-soft{background:var(--brand-050);color:var(--brand-600);}
.btn-soft:hover{background:var(--brand-500);color:#fff;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:15px;color:var(--brand-600);}
.link-arrow svg{transition:transform var(--dur) var(--ease);}
.link-arrow:hover svg{transform:translateX(4px);}
.link-underline{color:var(--ink-900);border-bottom:1px solid var(--brand-500);padding-bottom:1px;font-weight:600;}
.link-underline:hover{border-bottom-color:var(--accent);color:var(--ink-900);}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:1030;}
.topbar{background:var(--ink-900);color:rgba(255,255,255,.76);font-size:13px;line-height:1.5;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:40px;padding-top:6px;padding-bottom:6px;}
.topbar .top-left{display:flex;align-items:center;gap:10px;}
.topbar .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);display:inline-block;}
.topbar a{color:rgba(255,255,255,.76);}
.topbar a:hover{color:var(--accent);}
.topbar .top-right{display:flex;align-items:center;gap:14px;}
.mainbar{background:rgba(255,255,255,.88);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--line);transition:box-shadow .25s var(--ease);}
.mainbar-inner{display:flex;align-items:center;gap:20px;height:64px;transition:height .25s var(--ease);}
.site-header.is-stuck .mainbar-inner{height:56px;}
.site-header.is-stuck .mainbar{box-shadow:0 8px 22px rgba(22,24,29,.07);}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--ink-900);flex:0 0 auto;white-space:nowrap;}
.logo:hover{color:var(--ink-900);}
.logo-mark{width:32px;height:32px;border-radius:9px;background:var(--brand-500);display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:15px;font-weight:800;transition:transform .25s var(--ease),background-color var(--dur) var(--ease);flex:0 0 auto;}
.logo-mark span{transform:translateY(-1px);}
.site-header.is-stuck .logo-mark{transform:scale(.9);}
.nav-channels{display:flex;align-items:center;gap:2px;}
.nav-channels a{position:relative;padding:8px 12px;font-size:15px;color:var(--ink-700);border-radius:8px;white-space:nowrap;}
.nav-channels a::after{content:"";position:absolute;left:12px;right:12px;bottom:1px;height:1px;background:transparent;transition:background-color var(--dur) var(--ease),height var(--dur) var(--ease);}
.nav-channels a:hover{color:var(--ink-900);}
.nav-channels a:hover::after{background:var(--brand-500);}
.nav-channels a.active{color:var(--ink-900);font-weight:700;}
.nav-channels a.active::after{height:2px;background:var(--brand-500);}
.nav-tools{margin-left:auto;display:flex;align-items:center;gap:10px;}
.search-wrap{display:flex;align-items:center;border:1px solid var(--line);border-radius:999px;background:#fff;padding:0 12px;height:38px;width:38px;overflow:hidden;transition:width .25s var(--ease),border-color var(--dur) var(--ease);}
.search-wrap.open{width:220px;}
.search-wrap:focus-within{border-color:var(--brand-500);}
.search-wrap input{border:0;outline:none;background:transparent;font-size:14px;width:100%;opacity:0;transition:opacity .2s var(--ease);}
.search-wrap.open input{opacity:1;}
.search-btn{background:none;border:0;padding:0;display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;color:var(--ink-700);cursor:pointer;flex:0 0 auto;}
.search-btn:hover{color:var(--brand-500);}
.trend{position:relative;}
.trend-btn{display:inline-flex;align-items:center;gap:6px;height:38px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:14px;font-weight:600;color:var(--ink-700);cursor:pointer;}
.trend-btn:hover{border-color:var(--brand-500);color:var(--brand-600);}
.trend-panel{position:absolute;right:0;top:calc(100% + 10px);width:312px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-md);padding:16px;opacity:0;visibility:hidden;transform:translateY(-6px);transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;z-index:20;}
.trend:hover .trend-panel,.trend:focus-within .trend-panel{opacity:1;visibility:visible;transform:translateY(0);}
.trend-panel h4{font-size:13px;color:var(--ink-500);font-weight:600;letter-spacing:.04em;margin:0 0 10px;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;}
.chip{display:inline-flex;align-items:center;padding:5px 11px;border-radius:999px;background:var(--brand-050);color:var(--brand-600);font-size:12.5px;font-weight:600;}
.chip:hover{background:var(--brand-500);color:#fff;}
.burger{display:none;width:40px;height:38px;border-radius:var(--radius-btn);border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;cursor:pointer;}
.burger span{display:block;width:18px;height:2px;background:var(--ink-900);position:relative;}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}
.drawer{width:320px!important;background:var(--bg);}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);}
.drawer .offcanvas-title{font-size:16px;font-weight:800;margin:0;}
.drawer-nav a{display:flex;align-items:center;justify-content:space-between;min-height:52px;padding:0 4px;border-bottom:1px solid var(--line);font-size:16px;font-weight:600;color:var(--ink-900);}
.drawer-nav a.active{color:var(--brand-600);}
.drawer-nav a.active::after{content:"当前";font-size:12.5px;color:var(--brand-600);font-weight:600;}
.drawer-block{margin-top:26px;}
.drawer-block h4{font-size:13px;letter-spacing:.04em;color:var(--ink-500);font-weight:600;margin-bottom:12px;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:68px 0 80px;}
.hero::before{content:"";position:absolute;right:-180px;top:-140px;width:720px;height:720px;background:repeating-radial-gradient(circle at center,rgba(22,24,29,.05) 0 1px,transparent 1px 46px);pointer-events:none;}
.hero::after{content:"";position:absolute;left:-120px;bottom:-160px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(222,74,26,.06),transparent 68%);pointer-events:none;}
.hero-inner{position:relative;}
.hero h1{margin-bottom:18px;}
.hero h1 .hl{color:var(--brand-500);}
.hero-sub{font-size:18px;line-height:1.8;color:var(--ink-700);max-width:40ch;margin-bottom:28px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:10px;}
.mini-metrics{display:flex;flex-wrap:wrap;margin-top:30px;border-top:1px solid var(--line);padding-top:20px;}
.mini-metrics .item{padding:0 22px;border-left:1px solid var(--line);}
.mini-metrics .item:first-child{border-left:0;padding-left:0;}
.mini-metrics .val{font-size:20px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.3;}
.mini-metrics .lab{font-size:12.5px;color:var(--ink-500);line-height:1.5;max-width:16ch;}
.hero-figure{position:relative;margin-left:auto;max-width:520px;}
.hero-figure img{border-radius:var(--radius-card);width:100%;aspect-ratio:4/3;object-fit:cover;box-shadow:var(--shadow-sm);}
.hero-badge{position:absolute;left:-16px;bottom:22px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;box-shadow:var(--shadow-md);max-width:210px;}
.hero-badge .val{font-size:26px;font-weight:800;color:var(--brand-600);font-variant-numeric:tabular-nums;line-height:1.2;}
.hero-badge .lab{font-size:12.5px;color:var(--ink-500);line-height:1.5;}

/* ---------- Board (dark) ---------- */
.board{background:var(--ink-900);color:#F1EDE6;padding:96px 0;}
.board h2{color:#fff;}
.board .sec-head p{color:rgba(241,237,230,.62);}
.board .eyebrow{color:var(--accent);}
.board .eyebrow::before{background:var(--accent);}
.metric{background:rgba(255,255,255,.045);border-top:2px solid var(--brand-500);border-radius:12px;padding:24px 22px;height:100%;}
.metric .k{font-size:14px;font-weight:600;color:rgba(241,237,230,.72);margin-bottom:10px;}
.metric .v{font-size:clamp(34px,4.4vw,54px);font-weight:800;line-height:1.05;font-variant-numeric:tabular-nums;color:var(--accent);}
.metric .v small{font-size:16px;font-weight:700;margin-left:4px;color:rgba(241,237,230,.8);}
.metric .note{font-size:12.5px;line-height:1.5;color:rgba(241,237,230,.54);margin:12px 0 0;}
.board-compare{margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding-top:28px;}
.bar-line{display:flex;align-items:center;gap:18px;margin-bottom:14px;flex-wrap:wrap;}
.bar-line .lab{font-size:14px;color:rgba(241,237,230,.78);min-width:170px;}
.bar-track{flex:1 1 220px;height:12px;border-radius:999px;background:rgba(255,255,255,.14);overflow:hidden;min-width:140px;}
.bar-track i{display:block;height:100%;border-radius:999px;}
.bar-track i.orange{background:var(--brand-500);}
.bar-track i.lime{background:var(--accent);}
.bar-line .pct{font-size:15px;font-weight:800;font-variant-numeric:tabular-nums;color:#fff;min-width:52px;text-align:right;}

/* ---------- Bento ---------- */
.bento{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-auto-rows:minmax(158px,auto);gap:24px;}
.bento-item{position:relative;display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);}
.bento-item:hover{border-color:var(--brand-500);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.bento-item .idx{font-size:12.5px;font-weight:700;letter-spacing:.04em;color:var(--ink-500);}
.bento-item h3{margin:10px 0 8px;}
.bento-item p{font-size:14px;line-height:1.75;color:var(--ink-500);margin:0;}
.bento-item .go{margin-top:auto;padding-top:18px;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--brand-600);}
.bento-item .go svg{transition:transform var(--dur) var(--ease);}
.bento-item:hover .go svg{transform:translateX(4px);}
.bento-hero{grid-column:span 2;grid-row:span 2;padding:0;overflow:hidden;}
.bento-hero img{width:100%;height:62%;object-fit:cover;}
.bento-hero .body{padding:22px 24px 24px;}
.bento-hero .body p{max-width:46ch;}
.bento-item.is-ink{background:var(--ink-900);border-color:transparent;color:#F1EDE6;}
.bento-item.is-ink:hover{border-color:transparent;box-shadow:var(--shadow-md);}
.bento-item.is-ink .idx,.bento-item.is-ink p{color:rgba(241,237,230,.6);}
.bento-item.is-ink h3{color:#fff;}
.bento-item.is-ink .go{color:var(--accent);}
.bento-item.is-warm{background:var(--brand-050);border-color:#F2D6C9;}
.bento-item.is-warm .go{color:var(--brand-600);}

/* ---------- Compare ---------- */
.compare{display:grid;grid-template-columns:1fr 64px 1fr;gap:24px;align-items:start;}
.compare-col{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-sm);}
.compare-col.is-right{border-color:#F2D6C9;background:linear-gradient(180deg,#FFF9F6 0%,#FFFFFF 60%);}
.compare-col h3{font-size:17px;margin-bottom:6px;}
.compare-col .col-note{font-size:13px;color:var(--ink-500);margin-bottom:22px;}
.cmp-item{margin-bottom:22px;}
.cmp-item:last-child{margin-bottom:0;}
.cmp-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font-size:14px;color:var(--ink-700);margin-bottom:8px;}
.cmp-head b{font-size:20px;font-weight:800;font-variant-numeric:tabular-nums;}
.is-left .cmp-head b{color:var(--ink-500);}
.is-right .cmp-head b{color:var(--brand-500);}
.cmp-bar{height:10px;border-radius:999px;background:#EFEAE3;overflow:hidden;}
.cmp-bar i{display:block;height:100%;border-radius:999px;}
.is-left .cmp-bar i{background:#BFC2C7;}
.is-right .cmp-bar i{background:var(--brand-500);}
.cmp-note{font-size:12.5px;color:var(--ink-500);margin:8px 0 0;}
.compare-divider{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding-top:60px;}
.compare-divider .line{width:1px;flex:1;background:var(--line);}
.compare-divider .tag{width:44px;height:44px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:800;}

/* ---------- Latest news ---------- */
.news-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:24px;}
.card-news{display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);height:100%;}
.card-news:hover{border-color:var(--brand-500);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.card-news .thumb{overflow:hidden;aspect-ratio:16/9;background:#EFEAE3;}
.card-news .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
.card-news:hover .thumb img{transform:scale(1.03);}
.card-news .body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1;}
.badge-cat{display:inline-flex;align-items:center;align-self:flex-start;padding:4px 11px;border-radius:999px;background:var(--accent);color:var(--accent-ink);font-size:12.5px;font-weight:700;margin-bottom:12px;}
.card-news h3{font-size:19px;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-news h3 a{color:var(--ink-900);}
.card-news h3 a:hover{color:var(--brand-600);}
.card-news .excerpt{font-size:14px;line-height:1.75;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px;}
.card-meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--ink-500);margin-top:auto;font-variant-numeric:tabular-nums;}
.card-meta .sep{width:1px;height:12px;background:var(--line);}
.news-side{display:flex;flex-direction:column;gap:16px;}
.news-side-item{display:grid;grid-template-columns:112px 1fr;gap:16px;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);padding:14px;transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);}
.news-side-item:hover{border-color:var(--brand-500);transform:translateY(-2px);}
.news-side-item .thumb{border-radius:10px;overflow:hidden;aspect-ratio:4/3;background:#EFEAE3;}
.news-side-item .thumb img{width:100%;height:100%;object-fit:cover;}
.news-side-item h3{font-size:15.5px;line-height:1.5;margin:6px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-side-item h3 a{color:var(--ink-900);}
.news-side-item h3 a:hover{color:var(--brand-600);}
.empty-state{border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--bg-2);min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;padding:32px;}
.empty-state .shape{width:48px;height:48px;border-radius:14px;border:2px solid var(--line);position:relative;}
.empty-state .shape::after{content:"";position:absolute;inset:12px;border-radius:6px;background:var(--brand-050);}
.empty-state .t1{font-size:15px;color:var(--ink-700);font-weight:600;}
.empty-state .t2{font-size:13px;color:var(--ink-500);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.accordion{--bs-accordion-border-color:transparent;--bs-accordion-border-radius:var(--radius-card);--bs-accordion-inner-border-radius:var(--radius-card);--bs-accordion-btn-focus-box-shadow:none;--bs-accordion-bg:transparent;}
.accordion-item{background:var(--bg-2);border:1px solid var(--line)!important;border-radius:var(--radius-card)!important;overflow:hidden;margin-bottom:12px;}
.accordion-item:has(.accordion-button:not(.collapsed)){border-color:#F2D6C9!important;}
.accordion-button{background:transparent;color:var(--ink-900);font-size:17px;font-weight:700;padding:20px 22px;min-height:64px;line-height:1.5;box-shadow:none!important;}
.accordion-button:not(.collapsed){background:var(--brand-050);color:var(--ink-900);}
.accordion-button::after{background-image:none;content:"+";width:auto;height:auto;font-size:20px;font-weight:700;line-height:1;color:var(--brand-600);transform:none;transition:transform .25s var(--ease);}
.accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg);}
.accordion-body{position:relative;padding:2px 26px 24px 40px;font-size:15px;line-height:1.85;color:var(--ink-700);}
.accordion-body::before{content:"";position:absolute;left:22px;top:6px;bottom:24px;width:3px;border-radius:2px;background:var(--brand-500);}
.accordion-body p:last-child{margin-bottom:0;}

/* ---------- Form ---------- */
.form-card{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);padding:30px;box-shadow:var(--shadow-sm);}
.form-label{font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:8px;}
.form-control,.form-select{padding:12px 14px;border-radius:var(--radius-input);border:1px solid var(--line);background:#fff;font-size:15px;color:var(--ink-900);box-shadow:none;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);}
.form-control::placeholder{color:#A8ADB5;}
.form-control:focus,.form-select:focus{border-color:var(--brand-500);box-shadow:0 0 0 2px var(--accent);outline:none;}
.form-control.is-error,.form-select.is-error{border-color:var(--brand-600);}
.err-text{font-size:12.5px;color:var(--brand-600);margin:6px 0 0;display:none;}
.err-text.show{display:block;}
.privacy-note{font-size:12.5px;color:var(--ink-500);margin:14px 0 0;line-height:1.6;}
.form-success{display:none;text-align:center;padding:26px 8px;}
.form-success.show{display:block;}
.form-success .ok{width:52px;height:52px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:800;margin:0 auto 16px;}
.point-list li{position:relative;padding-left:22px;margin-bottom:14px;font-size:15px;line-height:1.75;color:var(--ink-700);}
.point-list li::before{content:"";position:absolute;left:0;top:9px;width:9px;height:9px;border-radius:2px;background:var(--accent);}
.contact-line{display:flex;gap:10px;font-size:14px;color:var(--ink-500);margin-bottom:10px;}
.contact-line b{color:var(--ink-900);font-weight:700;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-900);color:rgba(241,237,230,.72);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:0;}
.footer-col{padding:0 28px;border-left:1px solid rgba(255,255,255,.12);}
.footer-col:first-child{padding-left:0;border-left:0;}
.footer-col:last-child{padding-right:0;}
.site-footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;}
.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;margin-bottom:14px;}
.footer-brand .logo-mark{background:var(--brand-500);}
.site-footer p{font-size:13.5px;line-height:1.85;color:rgba(241,237,230,.6);}
.site-footer a{color:rgba(241,237,230,.72);font-size:14px;}
.site-footer a:hover{color:var(--accent);}
.footer-list li{margin-bottom:12px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:48px;padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:rgba(241,237,230,.52);}

/* ---------- Motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .nav-channels a{padding:8px 9px;font-size:14.5px;}
}
@media (max-width:991.98px){
  .nav-channels,.trend,.search-wrap{display:none;}
  .burger{display:inline-flex;}
  .nav-tools{gap:8px;}
  .section{padding:72px 0;}
  .board{padding:72px 0;}
  .hero{padding:48px 0 60px;}
  .hero-figure{margin:36px auto 0;max-width:100%;}
  .hero-badge{left:12px;bottom:12px;}
  .bento{grid-template-columns:repeat(2,minmax(0,1fr));}
  .bento-hero{grid-column:span 2;grid-row:auto;}
  .bento-hero img{height:220px;}
  .news-grid{grid-template-columns:1fr;}
  .compare{grid-template-columns:1fr;gap:18px;}
  .compare-divider{flex-direction:row;padding-top:0;}
  .compare-divider .line{width:auto;height:1px;}
  .footer-grid{grid-template-columns:1fr 1fr;row-gap:36px;}
  .footer-col{padding:0 20px;}
  .footer-col:nth-child(odd){padding-left:0;border-left:0;}
  .footer-col:last-child{padding-right:20px;}
}
@media (max-width:767.98px){
  .section{padding:56px 0;}
  .board{padding:56px 0;}
  .sec-head{margin-bottom:28px;}
  .form-card{padding:22px;}
  .compare-col{padding:22px;}
  .mini-metrics{flex-wrap:nowrap;overflow-x:auto;padding-bottom:8px;-webkit-overflow-scrolling:touch;}
  .mini-metrics .item{flex:0 0 auto;padding:0 18px;}
  .footer-grid{grid-template-columns:1fr;row-gap:32px;}
  .footer-col{padding:0!important;border-left:0;}
  .news-side-item{grid-template-columns:92px 1fr;}
}
@media (max-width:575.98px){
  .container,.container-lg,.container-xl{padding-left:18px;padding-right:18px;}
  .row{--bs-gutter-x:16px;--bs-gutter-y:16px;}
  .bento{grid-template-columns:1fr;}
  .bento-hero{grid-column:span 1;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn-brand,.hero-cta .btn-ghost{width:100%;}
  .topbar .top-right{display:none;}
  .accordion-button{font-size:16px;padding:18px;}
  .accordion-body{padding:2px 20px 20px 34px;}
  .accordion-body::before{left:18px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important;}
  .reveal{opacity:1!important;transform:none!important;}
}

/* roulang page: article */
:root{
  --brand-500:#DE4A1A;
  --brand-600:#B8380E;
  --brand-050:#FCEDE7;
  --ink-900:#16181D;
  --ink-700:#34383F;
  --ink-500:#6B7078;
  --line:#E4DFD7;
  --bg:#F6F2EC;
  --bg-2:#FFFFFF;
  --accent:#C8F169;
  --accent-ink:#1A2A0F;
  --radius-card:14px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(22,24,29,.04),0 8px 24px rgba(22,24,29,.06);
  --shadow-2:0 2px 4px rgba(22,24,29,.06),0 14px 34px rgba(22,24,29,.10);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sp-6:72px;
  --sp-7:96px;
  --dur:.2s;
  --fs-h1:clamp(32px,5.2vw,54px);
  --fs-h2:clamp(24px,3vw,34px);
  --font-cn:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink-900);text-decoration:none;transition:color var(--dur) ease,border-color var(--dur) ease,background-color var(--dur) ease;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;
}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:var(--accent);color:var(--accent-ink);}

body .container{
  width:100%;
  max-width:1200px;
  padding-left:24px;
  padding-right:24px;
  margin-left:auto;
  margin-right:auto;
}
@media (max-width:575.98px){
  body .container{padding-left:18px;padding-right:18px;}
}

/* ---------- 通用组件 ---------- */
.btn-primary-solid{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-500);color:#fff;font-weight:700;font-size:15px;
  padding:12px 22px;border-radius:var(--radius-btn);border:1px solid var(--brand-500);
  transition:background-color var(--dur) ease,transform var(--dur) ease,box-shadow var(--dur) ease,border-color var(--dur) ease;
}
.btn-primary-solid:hover{background:var(--brand-600);border-color:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-1);}
.btn-primary-solid:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;color:var(--ink-900);font-weight:700;font-size:15px;
  padding:11px 20px;border:1.5px solid var(--ink-900);border-radius:var(--radius-btn);
  transition:background-color var(--dur) ease,color var(--dur) ease,transform var(--dur) ease;
}
.btn-ghost:hover{background:var(--ink-900);color:#F6F2EC;transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.badge-soft{
  display:inline-flex;align-items:center;
  background:var(--accent);color:var(--accent-ink);
  font-size:12.5px;font-weight:500;letter-spacing:.04em;
  padding:4px 12px;border-radius:999px;line-height:1.5;
}
.badge-soft.orange{background:var(--brand-050);color:var(--brand-600);}

/* ---------- 导航 ---------- */
.site-header{position:relative;z-index:1040;}
.brand-strip{background:var(--ink-900);color:#EFEAE2;font-size:13px;line-height:1.5;}
.brand-strip-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:40px;}
.brand-strip-text{opacity:.88;}
.brand-strip-links{display:flex;gap:18px;}
.brand-strip-links a{color:#EFEAE2;font-size:13px;}
.brand-strip-links a:hover{color:var(--accent);}
.nav-main{
  position:sticky;top:0;z-index:1040;
  background:rgba(246,242,236,.88);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--dur) ease,background-color var(--dur) ease;
}
.site-header.is-scrolled .nav-main{box-shadow:0 6px 20px rgba(22,24,29,.07);background:rgba(246,242,236,.96);}
.nav-main-inner{display:flex;align-items:center;gap:28px;height:64px;transition:height .25s ease;}
.site-header.is-scrolled .nav-main-inner{height:56px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:32px;height:32px;border-radius:10px;background:var(--brand-500);
  color:#fff;display:grid;place-items:center;font-size:15px;font-weight:800;
  transition:width .25s ease,height .25s ease,border-radius .25s ease;
}
.logo-mark span{transform:translateY(-1px);}
.site-header.is-scrolled .logo-mark{width:28px;height:28px;border-radius:9px;font-size:13px;}
.logo-text{font-size:17px;font-weight:800;color:var(--ink-900);white-space:nowrap;letter-spacing:-0.01em;}
.site-header.is-scrolled .logo-text{font-size:16px;}
.nav-channels{display:flex;align-items:center;gap:22px;margin-left:8px;flex:1 1 auto;}
.nav-channels a{
  position:relative;font-size:15px;color:var(--ink-700);padding:6px 0;white-space:nowrap;
}
.nav-channels a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--brand-500);
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) ease,background-color var(--dur) ease;
}
.nav-channels a:hover{color:var(--ink-900);}
.nav-channels a:hover::after{transform:scaleX(1);background:var(--line);}
.nav-channels a.active{color:var(--ink-900);font-weight:700;}
.nav-channels a.active::after{transform:scaleX(1);background:var(--brand-500);}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.search-box{display:flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--bg-2);border-radius:999px;padding:5px 8px 5px 12px;transition:border-color var(--dur) ease;}
.search-box:focus-within{border-color:var(--brand-500);}
.search-box input{
  width:0;padding:0;border:0;background:transparent;font-size:14px;color:var(--ink-900);
  transition:width .25s ease,padding .25s ease;outline:none;
}
.search-box.is-open input{width:200px;padding:0 4px;}
.search-box button{
  border:0;background:transparent;color:var(--ink-500);font-size:14px;cursor:pointer;padding:2px 4px;
  display:grid;place-items:center;
}
.search-box button:hover{color:var(--brand-500);}
.icon-svg{width:16px;height:16px;display:block;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.hamburger{
  display:none;width:38px;height:38px;border:1px solid var(--line);border-radius:10px;background:var(--bg-2);
  cursor:pointer;padding:0;place-items:center;
}
.hamburger span{display:block;width:16px;height:2px;background:var(--ink-900);border-radius:2px;margin:3px auto;transition:var(--dur);}
.hamburger:hover{border-color:var(--brand-500);}
@media (max-width:991.98px){
  .nav-channels{display:none;}
  .search-box{display:none;}
  .hamburger{display:grid;}
  .nav-main-inner{gap:14px;height:60px;}
  .logo-text{font-size:15px;}
}
.drawer{background:var(--bg);width:min(340px,86vw) !important;}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 22px;}
.drawer .offcanvas-body{padding:18px 22px 32px;}
.drawer-list{display:flex;flex-direction:column;}
.drawer-list a{
  display:flex;align-items:center;min-height:52px;border-bottom:1px solid var(--line);
  font-size:15.5px;color:var(--ink-900);font-weight:600;
}
.drawer-list a:hover{color:var(--brand-500);}
.drawer-title{font-size:12.5px;letter-spacing:.04em;color:var(--ink-500);margin:24px 0 10px;font-weight:500;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;}
.chip{background:var(--brand-050);color:var(--brand-600);font-size:12.5px;padding:5px 12px;border-radius:999px;font-weight:500;}
.chip:hover{background:var(--brand-500);color:#fff;}
.drawer-cta{margin-top:26px;display:block;text-align:center;}

/* ---------- 面包屑 ---------- */
.crumb-bar{padding:20px 0 0;}
.breadcrumb-nav{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-500);}
.breadcrumb-nav a{color:var(--ink-500);}
.breadcrumb-nav a:hover{color:var(--brand-500);}
.breadcrumb-nav .sep{color:var(--line);}
.breadcrumb-nav .current{color:var(--ink-900);font-weight:700;}

/* ---------- 文章头 ---------- */
.article-head{padding:26px 0 34px;border-bottom:1px solid var(--line);}
.article-head-inner{max-width:820px;}
.channel-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:500;letter-spacing:.04em;
  color:var(--brand-600);background:var(--brand-050);border-radius:999px;padding:5px 14px;
}
.channel-tag i{width:6px;height:6px;border-radius:50%;background:var(--brand-500);display:block;}
.article-title{
  font-size:clamp(26px,3.4vw,40px);line-height:1.28;font-weight:800;color:var(--ink-900);
  margin:16px 0 18px;max-width:24em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;font-size:13.5px;color:var(--ink-500);}
.article-meta .num{font-variant-numeric:tabular-nums;}
.article-meta .divider{width:1px;height:12px;background:var(--line);display:inline-block;}

/* ---------- 文章主体布局 ---------- */
.article-shell{padding:44px 0 84px;}
.article-layout{max-width:1080px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr);gap:48px;}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,720px) 240px;}
}
.article-content{
  max-width:720px;
  font-size:17px;
  line-height:1.9;
  color:var(--ink-700);
}
.article-content > *:first-child{margin-top:0;}
.article-content p{margin:0 0 20px;}
.article-content h2{
  font-size:24px;line-height:1.4;font-weight:800;color:var(--ink-900);
  margin:44px 0 16px;padding-left:14px;border-left:4px solid var(--brand-500);
}
.article-content h3{font-size:19px;line-height:1.45;font-weight:700;color:var(--ink-900);margin:32px 0 12px;}
.article-content ul,.article-content ol{margin:0 0 20px;padding-left:22px;}
.article-content ul{list-style:disc;}
.article-content ol{list-style:decimal;}
.article-content li{margin-bottom:8px;}
.article-content li::marker{color:var(--brand-500);}
.article-content blockquote{
  margin:26px 0;padding:18px 22px;background:var(--brand-050);
  border-left:3px solid var(--brand-500);border-radius:0 12px 12px 0;color:var(--ink-700);
}
.article-content blockquote p:last-child{margin-bottom:0;}
.article-content figure{margin:26px 0;}
.article-content img{border-radius:14px;margin:22px 0;}
.article-content figure img{margin:0;}
.article-content figcaption{font-size:13px;color:var(--ink-500);text-align:center;margin-top:10px;}
.article-content table{width:100%;border-collapse:collapse;font-size:15px;margin:22px 0;}
.article-content th,.article-content td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.article-content th{background:#EFEAE2;font-weight:700;color:var(--ink-900);}
.article-content code{
  background:#EFEAE2;color:var(--ink-900);font-size:.9em;padding:2px 6px;border-radius:6px;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-content pre{background:var(--ink-900);color:#EFEAE2;padding:18px;border-radius:12px;overflow:auto;}
.article-content pre code{background:transparent;color:inherit;padding:0;}
.article-content a{color:var(--ink-900);border-bottom:1px solid var(--brand-500);}
.article-content a:hover{border-bottom-color:var(--accent);}

.article-empty{
  max-width:720px;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:56px 32px;text-align:center;box-shadow:var(--shadow-1);
}
.article-empty .geo{
  width:56px;height:56px;border-radius:16px;background:var(--brand-050);
  border:1px solid var(--line);margin:0 auto 18px;display:grid;place-items:center;
}
.article-empty .geo i{width:18px;height:18px;border:2px solid var(--brand-500);border-radius:5px;display:block;}
.article-empty h3{font-size:19px;margin-bottom:8px;}
.article-empty p{font-size:14px;color:var(--ink-500);margin-bottom:22px;}

/* ---------- 目录 ---------- */
.article-toc{display:none;}
@media (min-width:1200px){
  .article-toc{display:block;}
}
.toc-inner{position:sticky;top:96px;border-left:2px solid var(--line);padding-left:18px;}
.toc-title{font-size:12.5px;letter-spacing:.04em;color:var(--ink-500);font-weight:500;margin-bottom:14px;}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;font-size:13.5px;line-height:1.6;color:var(--ink-500);
  padding:5px 0;border-left:2px solid transparent;margin-left:-20px;padding-left:18px;
  transition:color var(--dur) ease,border-color var(--dur) ease;
}
.toc-list a:hover{color:var(--ink-900);}
.toc-list a.is-active{color:var(--brand-600);border-left-color:var(--brand-500);font-weight:700;}

/* ---------- 标签与分享 ---------- */
.article-foot{max-width:720px;margin-top:48px;padding-top:26px;border-top:1px solid var(--line);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px;}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.share-row .label{font-size:12.5px;color:var(--ink-500);letter-spacing:.04em;}
.share-btn{
  border:1px solid var(--line);background:var(--bg-2);color:var(--ink-700);
  font-size:13px;padding:6px 14px;border-radius:999px;cursor:pointer;
  transition:border-color var(--dur) ease,color var(--dur) ease,transform var(--dur) ease;
}
.share-btn:hover{border-color:var(--brand-500);color:var(--brand-600);transform:translateY(-1px);}
.share-btn:active{transform:translateY(0);}

/* ---------- 相关推荐 ---------- */
.related{padding:72px 0;background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;}
.section-head h2{font-size:var(--fs-h2);line-height:1.25;font-weight:800;}
.section-head p{font-size:14px;color:var(--ink-500);margin-top:8px;}
.link-arrow{
  font-size:14.5px;font-weight:700;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;
}
.link-arrow svg{width:16px;height:16px;transition:transform var(--dur) ease;}
.link-arrow:hover svg{transform:translateX(4px);}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.related-card{
  display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--dur) ease,border-color var(--dur) ease,box-shadow var(--dur) ease;
}
.related-card:hover{transform:translateY(-2px);border-color:var(--brand-500);box-shadow:var(--shadow-2);}
.related-card figure{margin:0;aspect-ratio:16/9;overflow:hidden;background:#EFEAE2;}
.related-card img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.related-card:hover img{transform:scale(1.03);}
.related-card .body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
.related-card h3{font-size:16.5px;line-height:1.45;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-card p{font-size:13.5px;color:var(--ink-500);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-card .meta{font-size:12.5px;color:var(--ink-500);font-variant-numeric:tabular-nums;margin-top:auto;}
@media (max-width:991.98px){
  .related-grid{grid-template-columns:1fr;gap:18px;}
  .related-card{flex-direction:row;}
  .related-card figure{width:38%;aspect-ratio:auto;min-height:132px;flex:0 0 38%;}
  .related{padding:56px 0;}
}
.back-channel{
  max-width:720px;margin:40px auto 0;text-align:center;font-size:14.5px;
}
.back-channel a{
  display:inline-flex;align-items:center;gap:8px;color:var(--ink-900);font-weight:700;
  border-bottom:1px solid var(--brand-500);padding-bottom:2px;
}
.back-channel a:hover{border-bottom-color:var(--accent);}

/* ---------- CTA 深色条 ---------- */
.cta-band{background:var(--ink-900);color:#EFEAE2;padding:64px 0;}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-inner h2{color:#FFF;font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:800;max-width:20em;}
.cta-inner p{color:rgba(239,234,226,.72);font-size:15px;margin-top:12px;max-width:36em;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-ghost{color:#EFEAE2;border-color:rgba(239,234,226,.45);}
.cta-band .btn-ghost:hover{background:#EFEAE2;color:var(--ink-900);border-color:#EFEAE2;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:rgba(239,234,226,.78);padding:64px 0 28px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-col h4{color:#FFF;font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.02em;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#FFF;font-weight:800;font-size:16.5px;margin-bottom:16px;}
.footer-brand .logo-mark{background:var(--brand-500);}
.footer-col p{line-height:1.8;margin-bottom:10px;}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-list a{color:rgba(239,234,226,.78);}
.footer-list a:hover{color:var(--accent);}
.footer-list li{font-variant-numeric:tabular-nums;}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:12.5px;color:rgba(239,234,226,.6);
}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding:48px 0 24px;}
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --brand-500:#DE4A1A;
  --brand-600:#B8380E;
  --brand-050:#FCEDE7;
  --ink-900:#16181D;
  --ink-700:#34383F;
  --ink-500:#6B7078;
  --line:#E4DFD7;
  --bg:#F6F2EC;
  --bg-2:#FFFFFF;
  --accent:#C8F169;
  --accent-ink:#1A2A0F;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-badge:999px;
  --shadow-1:0 1px 2px rgba(22,24,29,.04), 0 8px 24px rgba(22,24,29,.06);
  --shadow-2:0 2px 4px rgba(22,24,29,.06), 0 14px 34px rgba(22,24,29,.10);
  --ease:.2s ease;
  --container:1200px;
  --sec-pad:96px;
  --font:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}
/* ============ Bootstrap 变量覆盖 ============ */
:root{
  --bs-body-bg:var(--bg);
  --bs-body-color:var(--ink-700);
  --bs-primary:var(--brand-500);
  --bs-border-color:var(--line);
  --bs-link-color:var(--ink-900);
  --bs-link-hover-color:var(--brand-600);
  --bs-border-radius:10px;
  --bs-font-sans-serif:var(--font);
}
/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink-700);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink-900);text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease)}
a:hover{color:var(--brand-600)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:800;letter-spacing:0}
p{margin:0}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
/* ============ 容器 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}
/* ============ 排版层级 ============ */
h1{font-size:clamp(32px,5.2vw,54px);line-height:1.15;font-weight:800}
h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:800}
h3{font-size:20px;line-height:1.4;font-weight:700}
.lead{font-size:18px;line-height:1.8;color:var(--ink-500)}
.meta{font-size:14px;line-height:1.6;color:var(--ink-500)}
.micro{font-size:12.5px;line-height:1.5;font-weight:500;letter-spacing:.04em}
.num{font-variant-numeric:tabular-nums}
/* ============ 按钮 ============ */
.btn-brand,
.btn-ghost,
.btn-dark-line{
  display:inline-flex;align-items:center;gap:8px;
  border-radius:var(--radius-btn);
  font-weight:700;font-size:15px;
  padding:12px 22px;
  border:1.5px solid transparent;
  transition:all var(--ease);
  text-align:center;
}
.btn-brand{background:var(--brand-500);color:#fff;box-shadow:var(--shadow-1)}
.btn-brand:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-brand:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;color:var(--ink-900);border-color:var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:var(--bg)}
.btn-dark-line{background:transparent;color:var(--bg);border-color:rgba(246,242,236,.5)}
.btn-dark-line:hover{background:var(--bg);color:var(--ink-900);border-color:var(--bg)}
.text-link{
  color:var(--ink-900);font-weight:600;
  border-bottom:1px solid var(--brand-500);
  padding-bottom:1px;
  transition:all var(--ease);
}
.text-link:hover{color:var(--brand-600);border-bottom-color:var(--accent);font-weight:700}
.text-link .arrow{display:inline-block;transition:transform var(--ease)}
.text-link:hover .arrow{transform:translateX(4px)}
/* ============ 徽章 / 标签 ============ */
.tag{
  display:inline-block;
  font-size:12.5px;font-weight:500;letter-spacing:.04em;
  padding:4px 12px;border-radius:var(--radius-badge);
  line-height:1.5;
}
.tag-accent{background:var(--accent);color:var(--accent-ink)}
.tag-soft{background:var(--brand-050);color:var(--brand-600)}
/* ============ 顶部品牌行 ============ */
.site-header{position:sticky;top:0;z-index:1030}
.topbar{background:var(--ink-900);color:#EFEAE3}
.topbar-inner{
  min-height:40px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;line-height:1.4;
}
.topbar-note{color:rgba(246,242,236,.78);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-links{display:flex;align-items:center;gap:18px;flex-shrink:0}
.topbar-links a{color:#EFEAE3;font-size:13px}
.topbar-links a:hover{color:var(--accent)}
/* ============ 主导航行 ============ */
.mainbar{
  background:rgba(246,242,236,.88);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.mainbar-inner{
  min-height:64px;display:flex;align-items:center;gap:28px;
  transition:min-height var(--ease);
}
.site-header.is-stuck .mainbar{box-shadow:0 6px 20px rgba(22,24,29,.07)}
.site-header.is-stuck .mainbar-inner{min-height:56px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:32px;height:32px;border-radius:9px;
  background:var(--brand-500);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:16px;
  transition:width var(--ease),height var(--ease);
}
.logo-mark span{transform:translateY(-1px)}
.site-header.is-stuck .logo-mark{width:28px;height:28px;font-size:15px}
.brand-text{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:0;white-space:nowrap}
.site-header.is-stuck .brand-text{font-size:16px}
.nav-channels{display:flex;align-items:center;gap:24px;margin-left:8px;flex:1}
.nav-channels a{
  position:relative;font-size:15px;font-weight:600;color:var(--ink-700);
  padding:6px 0;white-space:nowrap;
}
.nav-channels a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--line);transform:scaleX(0);transform-origin:left;
  transition:transform var(--ease),background var(--ease);
}
.nav-channels a:hover{color:var(--ink-900)}
.nav-channels a:hover::after{transform:scaleX(1)}
.nav-channels a.active{color:var(--ink-900)}
.nav-channels a.active::after{height:2px;background:var(--brand-500);transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;margin-left:auto}
.icon-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  height:38px;padding:0 14px;border-radius:var(--radius-btn);
  background:transparent;border:1px solid var(--line);color:var(--ink-700);
  font-size:14px;font-weight:600;transition:all var(--ease);
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-600);background:var(--brand-050)}
.search-wrap{position:relative;display:flex;align-items:center;gap:8px}
.search-box{
  width:0;opacity:0;overflow:hidden;
  transition:width .23s ease,opacity .23s ease;
}
.search-wrap.open .search-box{width:220px;opacity:1}
.search-box input{
  width:100%;height:38px;border:1px solid var(--line);border-radius:var(--radius-btn);
  padding:0 14px;font-size:14px;background:var(--bg-2);color:var(--ink-700);
}
.search-box input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 2px var(--accent)}
.trend-wrap{position:relative}
.trend-panel{
  position:absolute;right:0;top:calc(100% + 10px);width:320px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);padding:16px;
  display:none;z-index:20;
}
.trend-wrap.open .trend-panel{display:block}
.trend-panel h4{font-size:13px;font-weight:700;color:var(--ink-500);margin-bottom:12px;letter-spacing:.04em}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-block;padding:6px 12px;border-radius:var(--radius-badge);
  background:var(--brand-050);color:var(--brand-600);
  font-size:13px;font-weight:600;transition:all var(--ease);
}
.chip:hover{background:var(--brand-500);color:#fff}
.hamburger{
  display:none;flex-direction:column;justify-content:center;gap:4px;
  width:42px;height:38px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:transparent;
}
.hamburger span{display:block;height:2px;width:18px;margin:0 auto;background:var(--ink-900);border-radius:2px}
.hamburger:hover{border-color:var(--brand-500)}
/* 移动抽屉 */
.offcanvas.drawer{
  background:var(--bg);width:320px;border-left:1px solid var(--line);
}
.drawer .offcanvas-header{border-bottom:1px solid var(--line);padding:18px 20px}
.drawer .offcanvas-body{padding:20px}
.drawer-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink-900);font-size:16px}
.drawer-nav{display:flex;flex-direction:column;margin-bottom:24px}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;
  font-size:16px;font-weight:600;color:var(--ink-700);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand-500)}
.drawer-nav a:hover{color:var(--brand-600)}
.drawer-title{font-size:13px;font-weight:700;color:var(--ink-500);letter-spacing:.04em;margin-bottom:12px}
.drawer-cta{margin-top:24px}
.drawer-cta .btn-brand{width:100%;justify-content:center}
/* ============ 页头横幅 ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--ink-900);
  border-bottom:1px solid var(--line);
}
.page-hero .hero-bg{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  opacity:.34;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(22,24,29,.95) 0%,rgba(22,24,29,.80) 45%,rgba(22,24,29,.55) 100%);
}
.hero-inner{position:relative;z-index:2;padding:64px 24px 56px}
.breadcrumb-bar{
  font-size:12.5px;color:rgba(246,242,236,.6);margin-bottom:20px;letter-spacing:.02em;
}
.breadcrumb-bar a{color:rgba(246,242,236,.6)}
.breadcrumb-bar a:hover{color:var(--accent)}
.breadcrumb-bar .sep{margin:0 8px;opacity:.6}
.breadcrumb-bar .current{color:#F6F2EC;font-weight:600}
.eyebrow{
  display:inline-block;margin-bottom:16px;
  font-size:12.5px;font-weight:500;letter-spacing:.12em;
  color:var(--accent-ink);background:var(--accent);
  padding:5px 12px;border-radius:var(--radius-badge);
}
.page-hero h1{color:#F6F2EC;max-width:19ch}
.hero-sub{
  margin-top:18px;max-width:62ch;
  font-size:17px;line-height:1.8;color:rgba(246,242,236,.78);
}
.hero-meta{
  margin-top:26px;display:flex;flex-wrap:wrap;gap:12px 28px;
  font-size:13px;color:rgba(246,242,236,.66);
}
.hero-meta span{display:inline-flex;align-items:center;gap:8px}
.hero-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand-500)}
/* ============ 板块 ============ */
.section{padding:var(--sec-pad) 0}
.section-head{margin-bottom:48px;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.section-head .head-text{max-width:62ch}
.section-title{margin-bottom:12px}
.section-sub{font-size:16px;line-height:1.8;color:var(--ink-500)}
.section-line{
  display:inline-block;width:44px;height:3px;background:var(--brand-500);
  margin-bottom:18px;border-radius:2px;
}
/* ============ 分组导航卡（不等宽） ============ */
.group-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.group-card{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:28px;
  display:flex;flex-direction:column;
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
  position:relative;
}
.group-card:hover{border-color:var(--brand-500);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.group-card--wide{grid-column:span 2;flex-direction:row;gap:28px;align-items:stretch}
.group-card--wide .group-media{
  flex:0 0 42%;border-radius:var(--radius-card);overflow:hidden;background:var(--brand-050);
}
.group-card--wide .group-media img{width:100%;height:100%;object-fit:cover}
.group-card--ink{background:var(--ink-900);border-color:var(--ink-900)}
.group-card--ink h3{color:#F6F2EC}
.group-card--ink .group-desc{color:rgba(246,242,236,.72)}
.group-card--ink .group-num{color:var(--accent)}
.group-card--ink .group-list li{color:rgba(246,242,236,.8);border-color:rgba(255,255,255,.12)}
.group-card--ink .card-link{color:var(--accent);border-bottom-color:rgba(200,241,105,.4)}
.group-card--soft{background:var(--brand-050);border-color:var(--brand-050)}
.group-num{
  font-size:12.5px;font-weight:700;letter-spacing:.12em;color:var(--brand-500);
  font-variant-numeric:tabular-nums;margin-bottom:14px;
}
.group-card h3{margin-bottom:10px}
.group-desc{font-size:14.5px;line-height:1.75;color:var(--ink-500);margin-bottom:18px}
.group-body{display:flex;flex-direction:column;flex:1}
.group-list{margin-bottom:20px}
.group-list li{
  font-size:14px;color:var(--ink-500);
  padding:8px 0 8px 18px;position:relative;
  border-bottom:1px dashed var(--line);
}
.group-list li:last-child{border-bottom:none}
.group-list li::before{
  content:"";position:absolute;left:0;top:16px;
  width:7px;height:7px;border-radius:2px;background:var(--accent);
}
.card-link{
  margin-top:auto;font-size:14px;font-weight:700;color:var(--ink-900);
  border-bottom:1px solid var(--brand-500);padding-bottom:2px;
  display:inline-flex;align-items:center;gap:6px;
}
.card-link .arrow{transition:transform var(--ease)}
.group-card:hover .card-link .arrow{transform:translateX(4px)}
/* ============ 图文条目列表（左右交错） ============ */
.entry-list{border-top:1px solid var(--line)}
.entry-item{
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
  padding:36px 0;border-bottom:1px solid var(--line);
}
.entry-item:nth-child(even) .entry-media{order:2}
.entry-media{
  border-radius:var(--radius-card);overflow:hidden;background:var(--brand-050);
  box-shadow:var(--shadow-1);
}
.entry-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;
  transition:transform .5s ease;
}
.entry-item:hover .entry-media img{transform:scale(1.03)}
.entry-body .tag{margin-bottom:14px}
.entry-body h3{margin-bottom:12px}
.entry-body h3 a{border-bottom:1px solid transparent}
.entry-body h3 a:hover{color:var(--brand-600)}
.entry-text{font-size:15px;line-height:1.85;color:var(--ink-500);margin-bottom:10px}
.entry-foot{margin-top:16px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.entry-foot .meta{font-size:12.5px}
/* ============ FAQ ============ */
.faq-list{
  border-top:1px solid var(--line);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:transparent;border:none;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:18px 4px;
  font-size:17px;font-weight:700;color:var(--ink-900);
  transition:color var(--ease),background var(--ease);
}
.faq-q:hover{color:var(--brand-600)}
.faq-q::after{
  content:"+";font-size:22px;font-weight:400;color:var(--brand-500);
  line-height:1;flex-shrink:0;transition:transform var(--ease);
}
.faq-q[aria-expanded="true"]::after{content:"−";transform:rotate(180deg)}
.faq-a-wrap{
  background:var(--brand-050);
  border-radius:0 0 var(--radius-card) var(--radius-card);
}
.faq-a{
  position:relative;padding:18px 24px 22px 22px;
  font-size:15px;line-height:1.85;color:var(--ink-700);
}
.faq-a::before{
  content:"";position:absolute;left:0;top:16px;bottom:18px;
  width:3px;background:var(--brand-500);border-radius:2px;
}
/* ============ CTA 条 ============ */
.cta-band{
  background:var(--ink-900);color:#F6F2EC;
  border-radius:var(--radius-card);
  padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;
  border-radius:50%;border:1px solid rgba(200,241,105,.24);
}
.cta-band h2{color:#F6F2EC;font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
.cta-band p{color:rgba(246,242,236,.72);font-size:15px;max-width:56ch}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:2}
/* ============ 页脚 ============ */
.site-footer{background:var(--ink-900);color:rgba(246,242,236,.72);padding:72px 0 0;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:0;
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:48px;
}
.footer-col{padding:0 28px}
.footer-col:first-child{padding-left:0}
.footer-col+.footer-col{border-left:1px solid rgba(255,255,255,.12)}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:800;color:#F6F2EC;margin-bottom:16px}
.footer-brand .logo-mark{width:28px;height:28px;font-size:14px}
.footer-col p{font-size:14px;line-height:1.8;margin-bottom:10px;color:rgba(246,242,236,.66)}
.footer-col h4{color:#F6F2EC;font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:18px}
.footer-list li{margin-bottom:12px;font-size:14px;color:rgba(246,242,236,.66)}
.footer-list a{color:rgba(246,242,236,.72);font-size:14px}
.footer-list a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(246,242,236,.54);
}
/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out}
.reveal.in{opacity:1;transform:none}
/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  :root{--sec-pad:80px}
}
@media (max-width:991.98px){
  :root{--sec-pad:72px}
  .nav-channels{display:none}
  .search-wrap{display:none}
  .hamburger{display:flex}
  .mainbar-inner{min-height:58px;gap:16px}
  .brand-text{font-size:16px}
  .group-grid{grid-template-columns:repeat(2,1fr)}
  .group-card--wide{grid-column:span 2;flex-direction:column}
  .group-card--wide .group-media{flex:none;height:200px}
  .footer-grid{grid-template-columns:1fr 1fr;row-gap:36px}
  .footer-col{padding:0}
  .footer-col+.footer-col{border-left:none}
  .footer-col:nth-child(even){padding-left:24px;border-left:1px solid rgba(255,255,255,.12)}
  .entry-item{gap:32px}
}
@media (max-width:767.98px){
  :root{--sec-pad:56px}
  .container{padding-left:18px;padding-right:18px}
  .hero-inner{padding:44px 18px 40px}
  .page-hero h1{max-width:none}
  .section-head{margin-bottom:32px}
  .entry-item{grid-template-columns:1fr;gap:20px;padding:28px 0}
  .entry-item:nth-child(even) .entry-media{order:0}
  .group-grid{grid-template-columns:1fr}
  .group-card--wide{grid-column:span 1}
  .cta-band{padding:32px 24px}
  .topbar-note{font-size:12px}
  .topbar-links{gap:12px}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .footer-col:nth-child(even){padding-left:0;border-left:none}
  .hero-meta{gap:10px 18px;font-size:12.5px}
  .btn-brand,.btn-ghost,.btn-dark-line{width:100%;justify-content:center}
  .cta-actions{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1!important;transform:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --brand-500:#DE4A1A;
  --brand-600:#B8380E;
  --brand-050:#FCEDE7;
  --ink-900:#16181D;
  --ink-700:#34383F;
  --ink-500:#6B7078;
  --line:#E4DFD7;
  --bg:#F6F2EC;
  --bg-2:#FFFFFF;
  --accent:#C8F169;
  --accent-ink:#1A2A0F;
  --font:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --shadow-1:0 1px 2px rgba(22,24,29,.04),0 8px 24px rgba(22,24,29,.06);
  --shadow-2:0 2px 4px rgba(22,24,29,.06),0 16px 36px rgba(22,24,29,.10);
  --ease:.2s ease;
  --sec:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:800;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:var(--accent);color:var(--accent-ink)}

/* 容器 */
.container{--bs-gutter-x:0;width:100%;max-width:1200px;margin-inline:auto;padding-inline:24px}
@media (min-width:576px){.container{max-width:1200px}}
@media (min-width:768px){.container{max-width:1200px}}
@media (min-width:992px){.container{max-width:1200px}}
@media (min-width:1200px){.container{max-width:1200px}}
@media (max-width:767px){.container{padding-inline:18px}}

/* 通用排版 */
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:500;letter-spacing:.04em;color:var(--brand-600)}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--brand-500);display:inline-block}
.lede{font-size:18px;line-height:1.8;color:var(--ink-500);max-width:40em}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.sec-head h2{font-size:clamp(24px,3vw,34px);line-height:1.25}
.sec-head .sec-desc{font-size:14px;color:var(--ink-500);max-width:32em;margin-top:8px}
.sec-more{font-size:14px;font-weight:700;color:var(--ink-900);border-bottom:1px solid var(--brand-500);padding-bottom:2px;white-space:nowrap}
.sec-more:hover{border-color:var(--accent);color:var(--brand-600)}

/* 按钮 */
.btn-brand,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;line-height:1;padding:13px 22px;
  border-radius:var(--r-btn);transition:transform var(--ease),background-color var(--ease),color var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.btn-brand{background:var(--brand-500);color:#fff;box-shadow:var(--shadow-1)}
.btn-brand:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-brand:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-ghost{background:transparent;color:var(--ink-900);border:1.5px solid var(--ink-900)}
.btn-ghost:hover{background:var(--ink-900);color:#F6F2EC}
.btn-sm{padding:10px 18px;font-size:14px}

/* 徽章 */
.badge-soft{display:inline-flex;align-items:center;font-size:12.5px;font-weight:500;letter-spacing:.04em;padding:4px 10px;border-radius:999px;background:var(--brand-050);color:var(--brand-600);white-space:nowrap}
.badge-accent{display:inline-flex;align-items:center;font-size:12.5px;font-weight:500;letter-spacing:.04em;padding:4px 10px;border-radius:999px;background:var(--accent);color:var(--accent-ink);white-space:nowrap}
.chip{display:inline-flex;align-items:center;font-size:12.5px;font-weight:500;padding:5px 11px;border-radius:999px;background:var(--brand-050);color:var(--brand-600);transition:background-color var(--ease),color var(--ease)}
.chip:hover{background:var(--brand-500);color:#fff}

/* 导航 */
.site-header{position:sticky;top:0;z-index:1040}
.topbar{background:var(--ink-900);color:rgba(246,242,236,.82);font-size:13px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:40px}
.topbar-text{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-links{display:flex;align-items:center;gap:18px}
.topbar-links a{color:rgba(246,242,236,.82)}
.topbar-links a:hover{color:var(--accent)}
.topbar-sep{width:1px;height:12px;background:rgba(255,255,255,.18)}
.nav-bar{
  background:rgba(246,242,236,.86);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:height var(--ease),box-shadow var(--ease),background-color var(--ease);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px;transition:height var(--ease)}
.site-header.is-scrolled .nav-bar{box-shadow:0 6px 18px rgba(22,24,29,.07);background:rgba(246,242,236,.96)}
.site-header.is-scrolled .nav-inner{height:56px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:10px;background:var(--ink-900);color:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:17px;
  transition:transform var(--ease),width var(--ease),height var(--ease);
}
.site-header.is-scrolled .logo-mark{width:30px;height:30px;font-size:15px}
.brand-text{font-weight:800;color:var(--ink-900);font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.nav-channels{display:flex;align-items:center;gap:4px;flex:1 1 auto;min-width:0}
.nav-channels a{
  position:relative;font-size:14.5px;font-weight:500;color:var(--ink-700);
  padding:6px 11px;border-radius:8px;white-space:nowrap;
}
.nav-channels a::after{
  content:"";position:absolute;left:11px;right:11px;bottom:0;height:1px;
  background:var(--line);transition:background-color var(--ease),height var(--ease);
}
.nav-channels a:hover{color:var(--brand-600);background:var(--brand-050)}
.nav-channels a:hover::after{background:var(--brand-500)}
.nav-channels a.active{color:var(--ink-900);font-weight:700}
.nav-channels a.active::after{background:var(--brand-500);height:2px}
.nav-tools{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.tool-btn{
  width:38px;height:38px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-700);border:1px solid transparent;transition:background-color var(--ease),color var(--ease),border-color var(--ease);
}
.tool-btn:hover{background:#fff;border-color:var(--line);color:var(--ink-900)}
.tool-btn-text{width:auto;padding:0 14px;font-size:14px;font-weight:500}
.tool-search,.tool-hot{position:relative}
.search-panel{
  position:absolute;right:0;top:calc(100% + 10px);width:0;opacity:0;pointer-events:none;
  background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-1);
  transition:width var(--ease),opacity var(--ease);
  overflow:hidden;
}
.search-panel.is-open{width:260px;opacity:1;pointer-events:auto}
.search-panel input{width:100%;border:0;padding:12px 14px;font-size:14px;background:transparent;outline:none}
.hot-panel{
  position:absolute;right:0;top:calc(100% + 10px);width:288px;padding:16px;
  background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-2);
  display:none;
}
.hot-panel.is-open{display:block}
.hot-panel h4{font-size:13px;font-weight:700;color:var(--ink-900);margin-bottom:10px;letter-spacing:.04em}
.hot-panel .hot-chips{display:flex;flex-wrap:wrap;gap:8px}
.burger{display:none;width:40px;height:40px;border-radius:10px;flex-direction:column;align-items:center;justify-content:center;gap:5px;border:1px solid var(--line);background:#fff}
.burger span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:86vw;z-index:1060;
  background:#fff;border-left:1px solid var(--line);box-shadow:var(--shadow-2);
  transform:translateX(102%);transition:transform .28s ease;
  display:flex;flex-direction:column;padding:22px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:34px;height:34px;border-radius:9px;border:1px solid var(--line);font-size:20px;line-height:1;display:inline-flex;align-items:center;justify-content:center}
.drawer-close:hover{background:var(--brand-050);color:var(--brand-600)}
.drawer-nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.drawer-nav a{height:52px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);font-size:15.5px;color:var(--ink-700)}
.drawer-nav a.active{color:var(--brand-600);font-weight:700}
.drawer-hot{margin:22px 0 18px}
.drawer-hot h4{font-size:13px;letter-spacing:.04em;margin-bottom:10px}
.drawer-hot .hot-chips{display:flex;flex-wrap:wrap;gap:8px}
.drawer-cta{width:100%;margin-top:auto}
.drawer-mask{position:fixed;inset:0;background:rgba(22,24,29,.42);z-index:1050;opacity:0;pointer-events:none;transition:opacity var(--ease)}
.drawer-mask.is-open{opacity:1;pointer-events:auto}

/* 页头 */
.page-head{
  position:relative;padding:44px 0 56px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(246,242,236,.93),rgba(246,242,236,.99)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.breadcrumb-bar{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-500);margin-bottom:20px}
.breadcrumb-bar a{color:var(--ink-500)}
.breadcrumb-bar a:hover{color:var(--brand-600)}
.breadcrumb-bar .sep{color:#C4BEB4}
.breadcrumb-bar .current{color:var(--ink-900);font-weight:700}
.page-head-row{display:flex;align-items:flex-start;justify-content:space-between;gap:32px}
.page-head h1{font-size:clamp(28px,4.2vw,46px);line-height:1.18;font-weight:800;max-width:20em;margin-bottom:16px}
.update-card{
  flex:0 0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 20px;box-shadow:var(--shadow-1);min-width:190px;
}
.update-label{display:block;font-size:12.5px;letter-spacing:.04em;color:var(--ink-500);margin-bottom:4px}
.update-card strong{display:block;font-size:22px;font-weight:800;color:var(--ink-900);font-variant-numeric:tabular-nums}
.update-note{display:block;font-size:12.5px;color:var(--ink-500);margin-top:6px;line-height:1.6}

/* 对照区 */
.compare-section{padding:var(--sec) 0}
.compare-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:32px;align-items:start}
.filter-card{position:sticky;top:112px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px 20px;box-shadow:var(--shadow-1)}
.filter-title{font-size:16px;font-weight:700;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.filter-group{margin-bottom:20px}
.filter-group h3{font-size:12.5px;font-weight:500;letter-spacing:.04em;color:var(--ink-500);margin-bottom:10px}
.filter-opt{display:flex;align-items:center;gap:9px;font-size:14px;color:var(--ink-700);padding:5px 0;cursor:pointer}
.filter-opt input{
  appearance:none;-webkit-appearance:none;width:16px;height:16px;border:1.5px solid var(--line);
  border-radius:5px;background:#fff;flex:0 0 auto;position:relative;transition:border-color var(--ease),background-color var(--ease);
}
.filter-opt input[type="radio"]{border-radius:50%}
.filter-opt input:checked{border-color:var(--brand-500);background:var(--brand-500)}
.filter-opt input:checked::after{content:"";position:absolute;left:4.5px;top:1.5px;width:4px;height:8px;border:2px solid #fff;border-top:0;border-left:0;transform:rotate(45deg)}
.filter-opt input[type="radio"]:checked::after{left:4px;top:4px;width:6px;height:6px;border:0;border-radius:50%;background:#fff;transform:none}
.filter-opt:hover input{border-color:var(--brand-500)}
.filter-hint{font-size:12.5px;color:var(--ink-500);line-height:1.6;padding-top:14px;border-top:1px solid var(--line)}

.compare-list{display:flex;flex-direction:column;gap:18px}
.compare-row{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px 24px;
  box-shadow:var(--shadow-1);transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.compare-row:hover{border-color:var(--brand-500);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.compare-row-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}
.compare-row-head h3{font-size:19px;line-height:1.4}
.bar-line{display:grid;grid-template-columns:96px minmax(0,1fr) 62px;align-items:center;gap:14px;margin-bottom:10px}
.bar-label{font-size:13.5px;color:var(--ink-500);white-space:nowrap}
.bar-track{height:12px;border-radius:999px;background:#F1ECE4;overflow:hidden}
.bar-fill{display:block;height:100%;width:var(--w,0);border-radius:999px;transition:width .8s ease}
.bar-a{background:#C9C2B7}
.bar-b{background:var(--brand-500)}
.bar-num{font-size:15px;font-weight:800;color:var(--ink-900);text-align:right;font-variant-numeric:tabular-nums}
.bar-note{font-size:12.5px;color:var(--ink-500);line-height:1.7;margin-top:12px;padding-top:12px;border-top:1px dashed var(--line)}

/* 时间线 */
.timeline-section{padding:var(--sec) 0;background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;position:relative;margin-top:8px}
.timeline::before{content:"";position:absolute;left:0;right:0;top:9px;height:1px;background:var(--line)}
.timeline li{position:relative;padding-top:32px}
.timeline li::before{
  content:"";position:absolute;left:0;top:2px;width:15px;height:15px;border-radius:50%;
  background:#fff;border:3px solid var(--brand-500);
}
.timeline time{display:block;font-size:12.5px;letter-spacing:.04em;color:var(--brand-600);font-variant-numeric:tabular-nums;margin-bottom:6px}
.timeline h3{font-size:16px;line-height:1.45;margin-bottom:8px}
.timeline p{font-size:13.5px;color:var(--ink-500);line-height:1.7}

/* 结论条 */
.conclusion{background:var(--ink-900);padding:var(--sec) 0;color:rgba(246,242,236,.76)}
.conclusion .eyebrow{color:var(--accent)}
.conclusion .eyebrow::before{background:var(--accent)}
.conclusion h2{color:#F6F2EC;font-size:clamp(24px,3vw,32px);margin:12px 0 10px}
.conclusion .sec-desc{color:rgba(246,242,236,.66);font-size:14px;max-width:38em}
.conclusion-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
.conclusion-item{border-top:2px solid var(--brand-500);padding-top:18px}
.conclusion-item strong{display:block;font-size:clamp(36px,5vw,54px);font-weight:800;color:var(--accent);line-height:1.1;font-variant-numeric:tabular-nums}
.conclusion-item strong small{font-size:18px;font-weight:700;margin-left:4px}
.conclusion-item p{font-size:13px;color:rgba(246,242,236,.6);margin-top:10px;line-height:1.7}

/* 表单 */
.contact-section{padding:var(--sec) 0}
.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:48px;align-items:start}
.contact-points{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.contact-points li{display:flex;gap:12px;font-size:15px;color:var(--ink-700);line-height:1.75}
.contact-points li::before{content:"";flex:0 0 auto;width:10px;height:10px;border-radius:3px;background:var(--accent);margin-top:9px}
.contact-info{margin-top:28px;padding-top:22px;border-top:1px solid var(--line);font-size:14px;color:var(--ink-500);display:flex;flex-direction:column;gap:8px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:30px;box-shadow:var(--shadow-1)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;font-weight:700;color:var(--ink-900);margin-bottom:8px}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--r-input);background:#FDFBF8;
  padding:12px 14px;font-size:15px;line-height:1.5;transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);
}
.field textarea{resize:vertical;min-height:112px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 2px var(--accent);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--brand-600);background:#FFF7F4}
.field-error{display:none;font-size:12.5px;color:var(--brand-600);margin-top:6px}
.field.has-error .field-error{display:block}
.form-submit{width:100%}
.form-privacy{font-size:12.5px;color:var(--ink-500);margin-top:14px;line-height:1.6}
.form-success{display:none;text-align:center;padding:26px 8px}
.form-success.is-visible{display:block}
.success-mark{width:52px;height:52px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:inline-flex;align-items:center;justify-content:center;font-size:26px;font-weight:800;margin-bottom:16px}
.form-success h3{font-size:20px;margin-bottom:10px}
.form-success p{font-size:14px;color:var(--ink-500);line-height:1.8}

/* 页脚 */
.site-footer{background:var(--ink-900);color:rgba(246,242,236,.72);padding:64px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}
.footer-col{padding-right:24px;border-right:1px solid rgba(255,255,255,.12)}
.footer-col:last-child{border-right:0;padding-right:0}
.footer-brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:#F6F2EC;font-size:17px;margin-bottom:16px}
.footer-col p{line-height:1.8;margin-bottom:10px;color:rgba(246,242,236,.62);font-size:13.5px}
.footer-col h4{font-size:14px;color:#F6F2EC;margin-bottom:16px;letter-spacing:.04em}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{color:rgba(246,242,236,.72);font-size:13.5px}
.footer-list a:hover{color:var(--accent)}
.footer-list li{font-size:13.5px;color:rgba(246,242,236,.62)}
.footer-bottom{
  margin-top:44px;padding:18px 0;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(246,242,236,.5);
}

/* 进入视口动画 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out}
.reveal.is-in{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1199px){
  .compare-layout{grid-template-columns:216px minmax(0,1fr);gap:24px}
}
@media (max-width:991px){
  .nav-channels,.tool-hot{display:none}
  .burger{display:inline-flex}
  .nav-inner{height:60px}
  .compare-layout{grid-template-columns:1fr}
  .filter-card{position:static}
  .timeline{grid-template-columns:repeat(2,1fr);row-gap:32px}
  .timeline::before{display:none}
  .timeline li{padding-top:24px}
  .contact-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;row-gap:32px}
  .footer-col:nth-child(2){border-right:0}
  .footer-col{padding-right:0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:767px){
  :root{--sec:56px}
  .topbar-inner{height:auto;padding:8px 0;flex-direction:column;align-items:flex-start;gap:2px}
  .topbar-links{gap:14px}
  .brand-text{font-size:15.5px}
  .page-head{padding:28px 0 40px}
  .page-head-row{flex-direction:column;gap:20px}
  .update-card{width:100%}
  .conclusion-grid{grid-template-columns:1fr;gap:20px}
  .timeline{grid-template-columns:1fr}
  .bar-line{grid-template-columns:76px minmax(0,1fr) 54px;gap:10px}
  .bar-label{font-size:12.5px}
  .form-card{padding:22px}
  .compare-row{padding:18px}
}
@media (max-width:520px){
  .bar-label{white-space:normal;line-height:1.4}
  .footer-grid{grid-template-columns:1fr}
  .hot-panel{width:min(288px,86vw)}
  .search-panel.is-open{width:min(260px,72vw)}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --brand-500:#DE4A1A;
  --brand-600:#B8380E;
  --brand-050:#FCEDE7;
  --ink-900:#16181D;
  --ink-700:#34383F;
  --ink-500:#6B7078;
  --line:#E4DFD7;
  --bg:#F6F2EC;
  --bg-2:#FFFFFF;
  --accent:#C8F169;
  --accent-ink:#1A2A0F;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --radius-badge:999px;
  --shadow-1:0 1px 2px rgba(22,24,29,.04), 0 8px 24px rgba(22,24,29,.06);
  --shadow-2:0 2px 4px rgba(22,24,29,.06), 0 16px 36px rgba(22,24,29,.10);
  --t:.2s ease;
  --font-cn:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--ink-900);text-decoration:none;transition:color var(--t),border-color var(--t),background-color var(--t);}
a:hover{color:var(--brand-500);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.01em;}
p{margin:0 0 16px;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.container-narrow{max-width:1080px;}

/* ---------- 顶部品牌行 ---------- */
.topbar{
  background:var(--ink-900);
  color:#EFE9E1;
  font-size:13px;
  line-height:40px;
  height:40px;
  overflow:hidden;
}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.topbar-left{display:flex;align-items:center;gap:10px;white-space:nowrap;}
.topbar-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;}
.topbar-right{display:flex;align-items:center;gap:18px;color:#B9B2A8;}
.topbar-right a{color:#EFE9E1;}
.topbar-right a:hover{color:var(--accent);}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;}
.mainnav{
  background:rgba(246,242,236,.88);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--t),min-height var(--t);
}
.mainnav .container{
  display:flex;
  align-items:center;
  gap:22px;
  min-height:64px;
  transition:min-height var(--t);
}
.site-header.is-stuck .mainnav{box-shadow:0 6px 20px rgba(22,24,29,.07);}
.site-header.is-stuck .mainnav .container{min-height:56px;}

.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:32px;height:32px;border-radius:9px;
  background:var(--brand-500);
  color:#fff;font-weight:800;font-size:15px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(222,74,26,.28);
  transition:transform var(--t);
}
.brand:hover .logo-mark{transform:rotate(-6deg);}
.brand-text{font-size:17px;font-weight:800;color:var(--ink-900);white-space:nowrap;}
.site-header.is-stuck .brand-text{font-size:16px;}

.nav-channels{display:flex;align-items:center;gap:4px;margin-left:6px;flex:1;}
.nav-channels a{
  position:relative;
  font-size:15px;
  color:var(--ink-700);
  padding:8px 12px;
  border-radius:8px;
  white-space:nowrap;
  border-bottom:2px solid transparent;
}
.nav-channels a:hover{color:var(--brand-500);border-bottom-color:var(--brand-500);background:var(--brand-050);}
.nav-channels a.active{color:var(--ink-900);font-weight:700;border-bottom-color:var(--brand-500);}

.nav-tools{display:flex;align-items:center;gap:8px;margin-left:auto;flex-shrink:0;}
.icon-btn{
  width:38px;height:38px;border-radius:10px;
  border:1px solid var(--line);background:var(--bg-2);
  color:var(--ink-900);font-size:15px;
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all var(--t);
}
.icon-btn:hover{border-color:var(--brand-500);color:var(--brand-500);transform:translateY(-1px);}
.icon-btn:active{transform:translateY(0);}

.search-wrap{display:flex;align-items:center;position:relative;}
.search-input{
  width:0;opacity:0;padding:0;border:1px solid var(--line);
  border-radius:10px;height:38px;font-size:14px;color:var(--ink-900);
  background:var(--bg-2);transition:width .25s ease,opacity .2s ease,padding .25s ease,border-color var(--t);
}
.search-wrap.open .search-input{width:220px;opacity:1;padding:0 12px;margin-left:8px;border-color:var(--line);}
.search-input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 2px var(--accent);}

.trend-wrap{position:relative;}
.trend-btn{width:auto;padding:0 12px;gap:7px;font-size:14px;}
.trend-label{font-size:14px;}
.trend-panel{
  position:absolute;right:0;top:calc(100% + 10px);
  width:300px;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-2);
  padding:16px;display:none;
}
.trend-wrap.open .trend-panel{display:block;}
.trend-panel h4{font-size:13px;color:var(--ink-500);font-weight:500;letter-spacing:.04em;margin-bottom:10px;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  display:inline-block;font-size:12.5px;line-height:1.5;
  padding:5px 11px;border-radius:var(--radius-badge);
  background:var(--brand-050);color:var(--brand-600);
  transition:all var(--t);
}
.chip:hover{background:var(--brand-500);color:#fff;}

.hamburger{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:var(--bg-2);color:var(--ink-900);font-size:17px;
  display:none;align-items:center;justify-content:center;cursor:pointer;
}
.hamburger:hover{border-color:var(--brand-500);color:var(--brand-500);}

.drawer-link{display:block;line-height:52px;padding:0 20px;font-size:16px;border-bottom:1px solid var(--line);}
.drawer-link.active{color:var(--brand-500);font-weight:700;background:var(--brand-050);}
.offcanvas{border-left:1px solid var(--line)!important;}
.offcanvas-title{font-weight:800;font-size:17px;}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;line-height:1;
  padding:13px 22px;border-radius:var(--radius-btn);
  cursor:pointer;border:1.5px solid transparent;
  transition:all var(--t);
}
.btn-brand{background:var(--brand-500);color:#fff;box-shadow:0 6px 16px rgba(222,74,26,.22);}
.btn-brand:hover{background:var(--brand-600);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(222,74,26,.28);}
.btn-brand:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;border-color:var(--ink-900);color:var(--ink-900);}
.btn-ghost:hover{background:var(--ink-900);color:#F6F2EC;transform:translateY(-1px);}
.btn-ghost:active{transform:translateY(0);}
.btn-sm{padding:9px 16px;font-size:14px;}
.link-arrow{
  color:var(--ink-900);
  border-bottom:1px solid var(--brand-500);
  padding-bottom:2px;
  font-weight:600;font-size:14.5px;
  display:inline-flex;align-items:center;gap:6px;
}
.link-arrow i{transition:transform var(--t);}
.link-arrow:hover{border-bottom-color:var(--accent);color:var(--brand-500);}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;
  padding:64px 0 56px;
  background-color:var(--bg);
  background-image:linear-gradient(180deg,rgba(246,242,236,.94) 0%,rgba(246,242,236,.82) 55%,rgba(246,242,236,.97) 100%),url(/assets/images/backpic/back-2.png);
  background-size:cover;
  background-position:center right;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  border-radius:50%;border:1px solid rgba(22,24,29,.06);pointer-events:none;
}
.breadcrumb-line{
  display:flex;align-items:center;gap:8px;
  font-size:12.5px;color:var(--ink-500);margin-bottom:18px;flex-wrap:wrap;
}
.breadcrumb-line a{color:var(--ink-500);}
.breadcrumb-line a:hover{color:var(--brand-500);}
.breadcrumb-line .current{color:var(--ink-900);font-weight:700;}
.page-hero h1{
  font-size:clamp(32px,5.2vw,50px);
  line-height:1.15;font-weight:800;max-width:20em;
}
.page-hero .lede{
  font-size:18px;line-height:1.8;color:var(--ink-700);
  max-width:34em;margin:18px 0 22px;
}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.meta-pill{
  font-size:12.5px;letter-spacing:.04em;color:var(--ink-700);
  background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius-badge);padding:6px 13px;
}
.meta-pill.accent{background:var(--accent);color:var(--accent-ink);border-color:transparent;font-weight:600;}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0;}
.section-head{max-width:44em;margin-bottom:36px;}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:800;}
.section-head p{color:var(--ink-500);font-size:16px;margin-top:12px;}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:500;letter-spacing:.04em;
  color:var(--brand-600);background:var(--brand-050);
  border-radius:var(--radius-badge);padding:5px 12px;margin-bottom:14px;
}

/* ---------- 指南布局 ---------- */
.guide-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;align-items:start;}
.toc-col{position:sticky;top:96px;}
.toc-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow-1);
}
.toc-card h2{font-size:13px;letter-spacing:.06em;color:var(--ink-500);font-weight:600;margin-bottom:12px;}
.toc-list a{
  display:block;font-size:14px;color:var(--ink-700);
  padding:7px 10px;border-left:2px solid transparent;border-radius:0 8px 8px 0;
  line-height:1.5;
}
.toc-list a:hover{background:var(--brand-050);color:var(--brand-600);}
.toc-list a.active{border-left-color:var(--brand-500);color:var(--ink-900);font-weight:700;background:var(--brand-050);}
.toc-note{font-size:12.5px;color:var(--ink-500);margin-top:14px;padding-top:14px;border-top:1px solid var(--line);line-height:1.6;}

.guide-body{min-width:0;max-width:720px;}
.guide-article{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);padding:40px;box-shadow:var(--shadow-1);}
.guide-article h2{
  font-size:26px;line-height:1.3;font-weight:800;margin:44px 0 16px;
  padding-top:8px;scroll-margin-top:100px;
}
.guide-article h2:first-child{margin-top:0;}
.guide-article h3{font-size:20px;line-height:1.4;font-weight:700;margin:26px 0 10px;}
.guide-article p{font-size:17px;line-height:1.9;color:var(--ink-700);}
.guide-article ul{margin:0 0 20px;}
.guide-article ul li{position:relative;padding-left:22px;margin-bottom:10px;font-size:16.5px;line-height:1.85;}
.guide-article ul li::before{
  content:"";position:absolute;left:0;top:11px;
  width:8px;height:8px;border-radius:2px;background:var(--accent);
}
.guide-article ol{counter-reset:go;margin:0 0 20px;}
.guide-article ol li{
  counter-increment:go;position:relative;padding-left:34px;
  margin-bottom:12px;font-size:16.5px;line-height:1.85;
}
.guide-article ol li::before{
  content:counter(go);position:absolute;left:0;top:5px;
  width:22px;height:22px;border-radius:7px;
  background:var(--ink-900);color:#F6F2EC;
  font-size:12.5px;font-weight:700;line-height:22px;text-align:center;
}
.quote{
  background:var(--brand-050);border-left:3px solid var(--brand-500);
  border-radius:0 var(--radius-card) var(--radius-card) 0;
  padding:18px 22px;margin:24px 0;
}
.quote p{margin:0;font-size:16px;line-height:1.85;color:var(--brand-600);}

.figure{margin:26px 0;}
.figure img{border-radius:var(--radius-card);border:1px solid var(--line);width:100%;object-fit:cover;}
.figure figcaption{font-size:13px;color:var(--ink-500);margin-top:10px;line-height:1.6;}

/* 步骤卡 */
.steps{display:grid;gap:14px;margin:22px 0 26px;}
.step-card{
  display:grid;grid-template-columns:52px minmax(0,1fr);gap:16px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px 22px;transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.step-card:hover{border-color:var(--brand-500);transform:translateY(-2px);box-shadow:var(--shadow-1);}
.step-no{
  width:44px;height:44px;border-radius:12px;
  background:var(--ink-900);color:var(--accent);
  font-size:18px;font-weight:800;line-height:44px;text-align:center;
  font-variant-numeric:tabular-nums;
}
.step-card h3{margin:0 0 6px;font-size:17.5px;}
.step-card p{margin:0;font-size:15.5px;line-height:1.8;color:var(--ink-500);}

/* 速查表 */
.quick-table{width:100%;border-collapse:collapse;margin:22px 0 26px;font-size:15.5px;}
.quick-table th,.quick-table td{
  text-align:left;padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top;
}
.quick-table th{background:var(--bg);font-size:13.5px;letter-spacing:.04em;color:var(--ink-700);font-weight:600;}
.quick-table td:first-child{font-weight:700;color:var(--ink-900);white-space:nowrap;}
.quick-table tr:last-child td{border-bottom:none;}

/* ---------- 误区卡组 ---------- */
.myth-section{background:var(--bg);}
.myth-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.myth-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;transition:border-color var(--t),transform var(--t),box-shadow var(--t);
}
.myth-card:hover{border-color:var(--brand-500);transform:translateY(-2px);box-shadow:var(--shadow-1);}
.myth-tag{
  display:inline-block;font-size:12.5px;letter-spacing:.04em;
  border-radius:var(--radius-badge);padding:4px 11px;margin-bottom:12px;
}
.myth-tag.warn{background:var(--brand-050);color:var(--brand-600);}
.myth-tag.right{background:var(--accent);color:var(--accent-ink);font-weight:600;}
.myth-card h3{font-size:17.5px;line-height:1.4;margin-bottom:8px;}
.myth-card p{font-size:15px;line-height:1.8;color:var(--ink-500);margin:0;}
.myth-fix{
  margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);
  font-size:15px;line-height:1.8;color:var(--ink-700);
}
.myth-fix strong{color:var(--ink-900);}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--ink-900);color:#EFE9E1;
  border-radius:18px;padding:48px 44px;
  display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:36px;align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:800;margin-bottom:12px;}
.cta-band p{color:#B9B2A8;font-size:16px;margin:0;}
.cta-actions{display:flex;flex-direction:column;gap:12px;align-items:flex-start;}
.cta-band .btn-ghost{border-color:rgba(246,242,236,.5);color:#F6F2EC;}
.cta-band .btn-ghost:hover{background:#F6F2EC;color:var(--ink-900);border-color:#F6F2EC;}
.cta-list{display:flex;flex-wrap:wrap;gap:16px;margin-top:18px;font-size:13.5px;color:#8E877C;}
.cta-list span{display:inline-flex;align-items:center;gap:7px;}
.cta-list i{color:var(--accent);font-size:12px;}

/* ---------- 表单 ---------- */
.form-section{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.form-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:start;}
.form-points{margin-top:22px;}
.form-points li{
  position:relative;padding-left:24px;margin-bottom:12px;
  font-size:16px;line-height:1.8;color:var(--ink-700);
}
.form-points li::before{
  content:"";position:absolute;left:0;top:10px;
  width:9px;height:9px;border-radius:3px;background:var(--accent);
}
.contact-line{font-size:14px;color:var(--ink-500);margin-top:18px;line-height:1.9;}
.contact-line strong{color:var(--ink-900);font-weight:700;}
.form-card{
  background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:32px;box-shadow:var(--shadow-1);
}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:8px;}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-input);
  padding:12px 14px;font-size:15px;font-family:inherit;color:var(--ink-900);
  background:var(--bg-2);transition:border-color var(--t),box-shadow var(--t);
}
.field textarea{resize:vertical;min-height:104px;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-500);box-shadow:0 0 0 2px var(--accent);
}
.field.error input,.field.error textarea{border-color:var(--brand-500);}
.field .err-msg{display:none;font-size:12.5px;color:var(--brand-600);margin-top:6px;}
.field.error .err-msg{display:block;}
.form-privacy{font-size:12.5px;color:var(--ink-500);margin-top:14px;line-height:1.6;}
.form-success{
  display:none;background:var(--brand-050);border:1px solid var(--brand-500);
  border-radius:var(--radius-card);padding:18px;font-size:15px;color:var(--brand-600);
}
.form-success.show{display:block;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:#B9B2A8;padding:64px 0 0;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;
  padding-bottom:44px;
}
.footer-col h4{color:#F6F2EC;font-size:15px;font-weight:700;margin-bottom:16px;}
.footer-col p{font-size:14px;line-height:1.85;color:#8E877C;margin-bottom:10px;}
.footer-brand{
  display:inline-flex;align-items:center;gap:10px;
  color:#F6F2EC;font-size:17px;font-weight:800;margin-bottom:14px;
}
.footer-brand .logo-mark{width:30px;height:30px;font-size:14px;}
.footer-list li{margin-bottom:10px;}
.footer-list a,.footer-list li{font-size:14px;color:#B9B2A8;line-height:1.7;}
.footer-list a:hover{color:var(--accent);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 26px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#8E877C;
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:1020;
  width:46px;height:46px;border-radius:50%;
  background:var(--ink-900);color:#F6F2EC;border:none;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;cursor:pointer;opacity:0;pointer-events:none;
  transform:translateY(10px);
  transition:opacity var(--t),transform var(--t),background-color var(--t);
  box-shadow:var(--shadow-2);
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}
.to-top:hover{background:var(--brand-500);}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease-out,transform .5s ease-out;}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .toc-col{position:static;}
  .guide-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .guide-body{max-width:none;}
  .toc-card{margin-bottom:8px;}
  .toc-list{display:flex;flex-wrap:wrap;gap:6px;}
  .toc-list a{border-left:none;border:1px solid var(--line);border-radius:var(--radius-badge);padding:6px 13px;font-size:13px;}
  .toc-list a.active{border-color:var(--brand-500);}
  .toc-note{display:none;}
}
@media (max-width:991px){
  .nav-channels{display:none;}
  .hamburger{display:inline-flex;}
  .section{padding:64px 0;}
  .page-hero{padding:48px 0 44px;}
  .guide-article{padding:30px;}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:36px 28px;}
  .form-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .topbar .container{font-size:12px;}
  .topbar-right span{display:none;}
  .search-wrap.open .search-input{width:150px;}
  .trend-label{display:none;}
  .trend-panel{width:min(300px,86vw);}
  .page-hero h1{font-size:clamp(28px,8vw,38px);}
  .guide-article{padding:24px 20px;}
  .guide-article h2{font-size:22px;}
  .guide-article p{font-size:16.5px;}
  .step-card{grid-template-columns:44px minmax(0,1fr);padding:18px;}
  .step-no{width:38px;height:38px;line-height:38px;font-size:16px;}
  .myth-grid{grid-template-columns:minmax(0,1fr);}
  .quick-table{display:block;overflow-x:auto;white-space:nowrap;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-bottom{flex-direction:column;}
  .cta-band{padding:32px 22px;}
  .to-top{right:16px;bottom:18px;}
}
@media (max-width:420px){
  .brand-text{font-size:15px;}
  .search-wrap.open .search-input{width:110px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important;}
  .reveal{opacity:1;transform:none;}
}