/* roulang page: index */
:root{
  --bg:#0E1013; --bg-elev:#16191E; --surface:#1B1F25; --surface-2:#232830;
  --line:rgba(255,255,255,.08); --line-strong:rgba(255,255,255,.14);
  --brand:#F0562E; --brand-hover:#FF6E45; --brand-active:#D34420;
  --accent:#35BFA3; --gold:#E9B949;
  --text-hi:#F3F1EC; --text:#C9C8C3; --text-lo:#8E939B; --text-faint:#666B73;
  --paper:#F7F5F0; --paper-line:#E5E1D8; --paper-text:#23262C; --paper-lo:#5C6169;
  --r-sm:10px; --r-md:14px; --r-lg:20px; --r-xl:28px; --r-pill:999px;
  --sh-1:0 1px 0 rgba(255,255,255,.05) inset, 0 10px 24px rgba(0,0,0,.35);
  --sh-2:0 1px 0 rgba(255,255,255,.07) inset, 0 22px 48px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
html body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;text-align:left;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.tnum{font-variant-numeric:tabular-nums}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(14,16,19,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{height:64px;display:flex;align-items:center;gap:20px}
.logo-wrap{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:28px;height:28px;border-radius:var(--r-sm);border:1px solid rgba(240,86,46,.55);background:rgba(240,86,46,.10);display:flex;align-items:center;justify-content:center}
.logo-mark i{display:block;width:10px;height:10px;border-radius:2px;background:var(--brand)}
.logo-text{font-size:16px;font-weight:600;color:var(--text-hi);letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto}
.nav-link{position:relative;padding:8px 12px;border-radius:var(--r-pill);font-size:14px;font-weight:500;color:var(--text-lo);transition:color .2s var(--ease),background-color .2s var(--ease)}
.nav-link:hover{color:var(--text-hi);background:rgba(255,255,255,.06)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{content:"";position:absolute;left:20%;right:20%;bottom:-2px;height:2px;border-radius:2px;background:var(--brand)}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.search-shell{display:flex;align-items:center;gap:8px;width:260px;height:38px;padding:0 14px;border-radius:var(--r-pill);background:var(--surface-2);border:1px solid var(--line);transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.search-shell:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px rgba(53,191,163,.22)}
.search-shell svg{flex:0 0 auto;color:var(--text-faint)}
.search-input{flex:1 1 auto;min-width:0;background:transparent;border:0;outline:none;font-size:14px;color:var(--text-hi)}
.search-input::placeholder{color:var(--text-faint)}
.kbd{flex:0 0 auto;font-size:11px;color:var(--text-faint);border:1px solid var(--line);border-radius:6px;padding:1px 6px;line-height:1.4}
.nav-quick{font-size:14px;color:var(--text-lo);transition:color .2s var(--ease);white-space:nowrap}
.nav-quick:hover{color:var(--text-hi)}
.nav-cta{height:40px;padding:0 18px;font-size:14px}
.menu-btn{display:none;width:40px;height:40px;align-items:center;justify-content:center;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--surface);color:var(--text-hi);cursor:pointer}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-pill);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.btn-primary{background:var(--brand);color:#14171C}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px)}
.btn-primary:active{background:var(--brand-active);transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-hi)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--accent);transition:color .2s var(--ease)}
.link-arrow svg{transition:transform .2s var(--ease)}
.link-arrow:hover svg{transform:translateX(2px)}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:86vh;display:flex;align-items:flex-end;background-color:var(--bg);background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,16,19,.94) 0%,rgba(14,16,19,.80) 42%,rgba(14,16,19,.34) 74%,rgba(14,16,19,.10) 100%)}
.hero::after{content:"";position:absolute;left:0;right:0;bottom:0;height:160px;background:linear-gradient(180deg,rgba(14,16,19,0) 0%,var(--bg) 100%)}
.hero-content{position:relative;z-index:2;width:100%;max-width:640px;padding:120px 0 96px}
.hero h1{font-size:clamp(30px,4.2vw,50px);line-height:1.22;font-weight:600;letter-spacing:-.01em;color:var(--text-hi);margin:0 0 20px}
.hero-sub{font-size:17px;line-height:1.8;color:var(--text);margin:0 0 32px;max-width:32ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;padding-top:28px;border-top:1px solid var(--line)}
.stat-num{display:block;font-size:24px;font-weight:600;color:var(--text-hi);line-height:1.2;letter-spacing:-.01em}
.stat-label{display:block;font-size:12px;color:var(--text-lo);margin-top:6px;line-height:1.5}

/* ---------- 区块 ---------- */
.section{padding:96px 0}
.section-elev{background:var(--bg-elev);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:24px;margin-bottom:36px}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.16em;color:var(--text-faint);margin-bottom:10px}
.h2{font-size:clamp(22px,2.4vw,30px);font-weight:600;color:var(--text-hi);line-height:1.3;letter-spacing:-.01em;margin:0}
.h2::before{content:"";display:inline-block;width:6px;height:18px;border-radius:2px;background:var(--brand);margin-right:12px;vertical-align:-2px}
.section-lead{font-size:16px;color:var(--text-lo);margin:12px 0 0;max-width:42ch}
.h3{font-size:19px;font-weight:600;color:var(--text-hi);line-height:1.4;margin:0}
.body-txt{font-size:16px;line-height:1.85;color:var(--text)}

/* ---------- 卡片 ---------- */
.card{display:flex;flex-direction:column;height:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease)}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-2)}
.card-img{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-elev)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.card:hover .card-img img{transform:scale(1.04)}
.cover-badge{position:absolute;top:12px;left:12px;display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);background:rgba(14,16,19,.74);color:var(--accent);font-size:12px;line-height:1;backdrop-filter:blur(4px)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.card-title{font-size:18px;font-weight:600;line-height:1.45;color:var(--text-hi);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{font-size:14px;line-height:1.8;color:var(--text-lo);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--text-lo);display:flex;align-items:center;gap:10px}
.badge-cat{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);background:rgba(53,191,163,.10);color:var(--accent);font-size:12px;line-height:1;white-space:nowrap}
.badge-gold{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);border:1px solid rgba(233,185,73,.6);background:transparent;color:var(--gold);font-size:12px;line-height:1;white-space:nowrap}
.badge-num{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:var(--surface-2);color:var(--text-lo);font-size:12px}

/* ---------- 横滑轨道 ---------- */
.track-wrap{position:relative}
.track{display:flex;gap:20px;overflow-x:auto;padding:4px 4px 12px;scroll-snap-type:x mandatory;-ms-overflow-style:none;scrollbar-width:none}
.track::-webkit-scrollbar{display:none}
.track > *{flex:0 0 320px;scroll-snap-align:start}
.track-nav{position:absolute;top:-64px;right:0;display:flex;gap:10px}
.circle-btn{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(14,16,19,.7);border:1px solid var(--line);color:var(--text);cursor:pointer;transition:border-color .2s var(--ease),color .2s var(--ease)}
.circle-btn:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- 精选非对称栅格 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature-main{grid-column:span 2;grid-row:span 2}
.feature-grid > *:nth-child(3){margin-top:24px}
.feature-grid > *:nth-child(5){margin-top:24px}
.feature-main .card-img{aspect-ratio:16/10;height:100%;min-height:260px}
.feature-main .card-title{font-size:22px}
.feature-main .card-desc{-webkit-line-clamp:3}

/* ---------- 分类入口区块 ---------- */
.grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:start}
.col-5{grid-column:span 5}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-4{grid-column:span 4}
.media-frame{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--bg-elev);box-shadow:var(--sh-1)}
.media-frame img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.list-rows{display:flex;flex-direction:column}
.list-row{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.list-row:first-child{padding-top:0}
.list-row:last-child{border-bottom:0;padding-bottom:0}
.list-row h4{font-size:16px;font-weight:600;color:var(--text-hi);margin:0 0 6px}
.list-row p{font-size:14px;line-height:1.8;color:var(--text-lo);margin:0}
.block-foot{margin-top:28px;padding-top:20px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.num-axis{display:flex;flex-direction:column;gap:14px;padding-left:24px;border-left:1px solid var(--line-strong)}
.axis-item{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-lo)}
.axis-item b{font-size:20px;font-weight:600;color:var(--text-hi);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.plain-list{display:grid;grid-template-columns:repeat(2,1fr);gap:0 32px}
.plain-item{padding:16px 0;border-bottom:1px solid var(--line)}

/* ---------- 最新信息 CMS ---------- */
.cms-list{border-top:1px solid var(--line)}
.cms-item{display:flex;gap:20px;padding:20px 0;border-bottom:1px solid var(--line);transition:background-color .2s var(--ease)}
.cms-item:hover{background:rgba(255,255,255,.04)}
.cms-thumb{flex:0 0 160px;width:160px;height:100px;border-radius:var(--r-md);overflow:hidden;background:var(--bg-elev);border:1px solid var(--line)}
.cms-thumb img{width:100%;height:100%;object-fit:cover}
.cms-main{min-width:0;flex:1 1 auto}
.cms-title{font-size:20px;font-weight:600;line-height:1.5;color:var(--text-hi);margin:0 0 8px;transition:color .2s var(--ease);overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical}
.cms-item:hover .cms-title{color:var(--accent)}
.cms-desc{font-size:14px;line-height:1.8;color:var(--text-lo);margin:0 0 12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cms-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-lo)}
.filter-pills{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.pill{display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);border:1px solid var(--line);background:transparent;color:var(--text-lo);font-size:13px;cursor:default}
.pill.is-on{border-color:rgba(240,86,46,.5);color:var(--brand);background:rgba(240,86,46,.08)}
.aside-sticky{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px}
.aside-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;box-shadow:var(--sh-1)}
.aside-title{font-size:14px;font-weight:600;color:var(--text-hi);margin:0 0 14px;letter-spacing:.02em}
.aside-link{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;font-size:14px;color:var(--text-lo);border-bottom:1px solid var(--line);transition:color .2s var(--ease)}
.aside-link:last-child{border-bottom:0}
.aside-link:hover{color:var(--accent)}
.empty-box{max-width:360px;margin:40px auto;text-align:center;display:flex;flex-direction:column;align-items:center;gap:12px}
.empty-box svg{color:var(--text-faint)}
.empty-main{font-size:15px;font-weight:600;color:var(--text-hi);margin:0}
.empty-sub{font-size:14px;color:var(--text-lo);margin:0}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:880px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;transition:border-color .2s var(--ease)}
.faq-item.open{border-color:var(--line-strong)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px;background:transparent;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--text-hi);cursor:pointer}
.faq-sign{flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .22s var(--ease);color:var(--text-lo)}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:currentColor;border-radius:1px}
.faq-sign::before{left:0;right:0;top:10px;height:1.5px}
.faq-sign::after{top:0;bottom:0;left:10px;width:1.5px}
.faq-item.open .faq-sign{transform:rotate(45deg);color:var(--brand)}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .22s var(--ease)}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a > div{overflow:hidden}
.faq-a p{margin:0;padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--text-lo)}

/* ---------- CTA ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(240,86,46,.10) 0%,rgba(240,86,46,.03) 55%,rgba(53,191,163,.05) 100%)}
.cta-band::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);background-size:44px 44px;opacity:.7}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:88px 0}
.cta-form{display:flex;flex-wrap:wrap;gap:12px}
.input-pill{flex:1 1 240px;min-width:0;height:44px;padding:0 20px;border-radius:var(--r-pill);background:var(--surface-2);border:1px solid var(--line);color:var(--text-hi);font-size:15px;outline:none;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.input-pill::placeholder{color:var(--text-faint)}
.input-pill:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(53,191,163,.22)}
.form-note{font-size:12px;color:var(--text-faint);margin:14px 0 0;line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-elev);border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:72px 0 48px}
.footer-title{font-size:14px;font-weight:600;color:var(--text-hi);margin:0 0 18px;letter-spacing:.02em}
.footer-link{display:block;font-size:14px;color:var(--text-lo);padding:6px 0;transition:color .2s var(--ease)}
.footer-link:hover{color:var(--accent)}
.footer-desc{font-size:14px;line-height:1.8;color:var(--text-lo);margin:16px 0 20px;max-width:34ch}
.social-row{display:flex;gap:10px}
.social-btn{width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;border:1px solid var(--line);color:var(--text-lo);transition:border-color .2s var(--ease),color .2s var(--ease)}
.social-btn:hover{border-color:var(--accent);color:var(--accent)}
.footer-bottom{border-top:1px solid var(--line);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.footer-bottom p{margin:0;font-size:13px;color:var(--text-faint)}
.footer-bottom-links{display:flex;align-items:center;gap:20px;font-size:13px;color:var(--text-lo)}
.top-btn{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-lo);cursor:pointer;background:transparent;border:0;transition:color .2s var(--ease)}
.top-btn:hover{color:var(--accent)}

/* ---------- 移动抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:80;background:rgba(14,16,19,.98);backdrop-filter:blur(10px);display:none;padding:20px}
.drawer.open{display:block}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.drawer-close{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--surface);color:var(--text-hi);cursor:pointer}
.drawer-nav{display:flex;flex-direction:column;gap:6px;margin:20px 0}
.drawer-nav a{padding:14px 4px;font-size:16px;color:var(--text);border-bottom:1px solid var(--line)}
.drawer-nav a.active{color:var(--brand)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container-x{max-width:1120px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .search-shell{display:none}
  .nav-quick{display:none}
  .menu-btn{display:inline-flex}
  .nav-inner{height:56px;justify-content:space-between}
  .hero-content{padding:96px 0 72px;max-width:100%}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .feature-main{grid-column:span 2;grid-row:auto}
  .feature-grid > *:nth-child(3),.feature-grid > *:nth-child(5){margin-top:0}
  .grid-12{grid-template-columns:repeat(6,1fr)}
  .col-5,.col-7{grid-column:span 6}
  .col-8{grid-column:span 6}
  .col-4{grid-column:span 6}
  .aside-sticky{position:static}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding:64px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 40px}
}
@media (max-width:640px){
  .container-x{padding:0 20px}
  .section{padding:56px 0}
  .hero{min-height:72vh}
  .hero-content{padding:80px 0 56px}
  .hero-stats{gap:24px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .track > *{flex:0 0 260px}
  .track-nav{display:none}
  .feature-grid{grid-template-columns:1fr}
  .feature-main{grid-column:span 1}
  .plain-list{grid-template-columns:1fr}
  .cms-item{gap:14px}
  .cms-thumb{flex:0 0 104px;width:104px;height:70px}
  .cms-title{font-size:17px}
  .num-axis{padding-left:18px;flex-direction:row;flex-wrap:wrap;gap:18px;border-left:0;border-top:1px solid var(--line-strong);padding-top:18px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .btn{height:40px}
  .nav-cta{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  .card:hover{transform:none}
  .card:hover .card-img img{transform:none}
}

/* roulang page: article */
:root{
  --bg:#0E1013;
  --bg-elev:#16191E;
  --surface:#1B1F25;
  --surface-2:#232830;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --brand:#F0562E;
  --brand-hover:#FF6E45;
  --brand-active:#D34420;
  --accent:#35BFA3;
  --gold:#E9B949;
  --text-hi:#F3F1EC;
  --text:#C9C8C3;
  --text-lo:#8E939B;
  --text-faint:#666B73;
  --paper:#F7F5F0;
  --paper-line:#E5E1D8;
  --paper-text:#23262C;
  --paper-lo:#5C6169;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 1px 0 rgba(255,255,255,.05) inset, 0 10px 24px rgba(0,0,0,.35);
  --sh-2:0 1px 0 rgba(255,255,255,.07) inset, 0 22px 48px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text-hi);font-weight:600;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(14,16,19,.82);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.logo-wrap{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:28px;height:28px;border-radius:var(--r-sm);
  border:1px solid var(--brand);
  background:rgba(240,86,46,.08);
  display:inline-flex;align-items:center;justify-content:center;
}
.logo-mark i{display:block;width:8px;height:8px;border-radius:2px;background:var(--brand);transition:transform .2s var(--ease)}
.logo-wrap:hover .logo-mark i{transform:scale(1.25)}
.logo-text{color:var(--text-hi);font-size:16px;font-weight:600;letter-spacing:0}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 12px;border-radius:var(--r-pill);
  font-size:14px;font-weight:500;color:var(--text-lo);
  transition:color .18s var(--ease),background .18s var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--text-hi);background:rgba(255,255,255,.06)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{
  content:"";position:absolute;left:20%;right:20%;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-shell{
  display:flex;align-items:center;gap:8px;
  width:260px;height:38px;padding:0 12px;
  background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-pill);
  color:var(--text-faint);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-shell:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(53,191,163,.18)}
.search-input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  font-size:14px;color:var(--text-hi);
}
.search-input::placeholder{color:var(--text-faint)}
.kbd{
  font-size:11px;line-height:1;padding:4px 6px;border-radius:6px;
  border:1px solid var(--line-strong);color:var(--text-faint);
}
.nav-quick{font-size:14px;color:var(--text-lo);transition:color .18s var(--ease);white-space:nowrap}
.nav-quick:hover{color:var(--text-hi)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border:1px solid transparent;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{background:var(--brand);color:#14171C}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px)}
.btn-primary:active{background:var(--brand-active);transform:none}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-hi)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.nav-cta{height:40px;padding:0 18px;font-size:14px}
.menu-btn{
  display:none;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:var(--r-sm);
  background:var(--surface-2);border:1px solid var(--line);color:var(--text-hi);cursor:pointer;
}
.menu-btn:hover{border-color:var(--line-strong)}

/* mobile drawer */
.drawer{
  display:none;
  border-bottom:1px solid var(--line);
  background:rgba(14,16,19,.98);
  padding:16px 20px 22px;
}
.drawer.open{display:block}
.drawer .d-link{
  display:block;padding:12px 4px;font-size:15px;font-weight:500;color:var(--text);
  border-bottom:1px solid var(--line);
}
.drawer .d-link.active{color:var(--brand)}
.drawer .d-search{
  display:flex;align-items:center;gap:8px;margin:14px 0;
  height:44px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--surface-2);border:1px solid var(--line);color:var(--text-faint);
}
.drawer .d-search input{flex:1;min-width:0;background:transparent;border:0;outline:none;font-size:14px;color:var(--text-hi)}

/* ---------- breadcrumb ---------- */
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-lo);line-height:1.5;
}
.crumb a{color:var(--text-lo)}
.crumb a:hover{color:var(--accent)}
.crumb .now{color:var(--text);max-width:46ch;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ---------- article head ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;line-height:1.5;
  background:rgba(53,191,163,.08);color:var(--accent);border:1px solid rgba(53,191,163,.28);
}
.pill-gold{background:transparent;border-color:rgba(233,185,73,.55);color:var(--gold)}
.meta-row{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  font-size:13px;color:var(--text-lo);line-height:1.5;
}
.meta-row .dot{color:var(--text-faint)}
.article-h1{
  font-size:40px;line-height:1.3;font-weight:600;letter-spacing:-.01em;color:var(--text-hi);
  max-width:22ch;
}
.hairline{height:1px;background:var(--line);border:0;margin:0}

/* ---------- paper reading panel ---------- */
.paper{
  background:var(--paper);border-radius:var(--r-xl);
  box-shadow:var(--sh-1);
  padding:56px 48px;
  color:var(--paper-text);
}
.paper-content{max-width:752px;font-size:17px;line-height:1.9;color:var(--paper-text);letter-spacing:.01em}
.paper-content > * + *{margin-top:1.4em}
.paper-content p{margin:0}
.paper-content h2{
  position:relative;font-size:24px;font-weight:600;color:var(--paper-text);
  margin-top:2em;margin-bottom:.6em;padding-left:16px;line-height:1.45;
}
.paper-content h2::before{
  content:"";position:absolute;left:0;top:.28em;width:4px;height:18px;
  background:var(--brand);border-radius:2px;
}
.paper-content h3{font-size:19px;font-weight:600;color:var(--paper-text);margin-top:1.6em;margin-bottom:.5em;line-height:1.5}
.paper-content ul,.paper-content ol{padding-left:1.4em;margin:0}
.paper-content ul{list-style:disc}
.paper-content ol{list-style:decimal}
.paper-content li{margin:.5em 0}
.paper-content blockquote{
  margin:0;padding:20px;border-left:3px solid var(--brand);
  background:#EFEBE2;border-radius:0 var(--r-md) var(--r-md) 0;color:#3A3E45;
}
.paper-content img{border-radius:var(--r-md);margin:0 auto}
.paper-content figure{margin:0}
.paper-content figcaption{font-size:13px;color:var(--paper-lo);text-align:center;margin-top:10px}
.paper-content table{width:100%;border-collapse:collapse;font-size:15px}
.paper-content th,.paper-content td{border:1px solid var(--paper-line);padding:10px 12px;text-align:left}
.paper-content th{font-weight:600;background:#EFEBE2}
.paper-content code{background:#EFEBE2;border-radius:6px;padding:2px 6px;font-size:14px}
.paper-content pre{background:var(--bg);color:var(--text-hi);border-radius:var(--r-md);padding:18px;overflow:auto}
.paper-content pre code{background:transparent;color:inherit;padding:0}
.paper-content a{color:#B23A16;text-decoration:underline;text-underline-offset:3px}
.paper-content a:hover{color:#8F2C0F}

/* ---------- tags / side ---------- */
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:var(--r-pill);
  font-size:13px;line-height:1.5;
  background:var(--surface);border:1px solid var(--line);color:var(--text-lo);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.tag:hover{border-color:var(--accent);color:var(--accent)}
.textlink{display:inline-flex;align-items:center;gap:6px;color:var(--accent);font-size:14px;font-weight:500}
.textlink svg{transition:transform .18s var(--ease)}
.textlink:hover svg{transform:translateX(2px)}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--sh-1);
}
.side-title{font-size:14px;font-weight:600;color:var(--text-hi);margin-bottom:14px;letter-spacing:0}
.side-link{
  display:block;padding:9px 0;font-size:14px;color:var(--text-lo);
  border-bottom:1px solid var(--line);transition:color .18s var(--ease);
}
.side-link:last-child{border-bottom:0}
.side-link:hover{color:var(--accent)}
.hot-item{display:flex;gap:10px;padding:9px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--text-lo);line-height:1.6}
.hot-item:last-child{border-bottom:0}
.hot-item:hover{color:var(--text-hi)}
.hot-idx{
  flex:0 0 auto;width:24px;height:24px;border-radius:999px;
  background:var(--surface-2);color:var(--text-lo);
  font-size:12px;display:inline-flex;align-items:center;justify-content:center;
}

/* ---------- content cards ---------- */
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-2)}
.card-cover{position:relative;overflow:hidden;border-radius:var(--r-md);margin:12px 12px 0;background:var(--surface-2);aspect-ratio:16/9}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.card:hover .card-cover img{transform:scale(1.04)}
.card-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px}
.card-title{font-size:18px;font-weight:600;color:var(--text-hi);line-height:1.5}
.card:hover .card-title{color:var(--accent)}
.card-desc{
  font-size:14px;color:var(--text-lo);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-lo)}
.badge-corner{
  position:absolute;top:10px;left:10px;
  padding:4px 10px;border-radius:var(--r-pill);
  font-size:12px;line-height:1.5;
  background:rgba(14,16,19,.72);color:var(--accent);border:1px solid rgba(53,191,163,.3);
  backdrop-filter:blur(6px);
}

/* ---------- empty ---------- */
.empty{
  max-width:360px;margin:0 auto;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:12px;
  padding:48px 20px;
}
.empty .ico{width:44px;height:44px;color:var(--text-lo);border:1.5px solid var(--line-strong);border-radius:var(--r-md);display:flex;align-items:center;justify-content:center}
.empty h3{font-size:17px}
.empty p{font-size:14px;color:var(--text-lo)}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--bg-elev);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(0deg,rgba(240,86,46,.08),rgba(240,86,46,.08)),
    repeating-linear-gradient(90deg,rgba(255,255,255,.035) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(0deg,rgba(255,255,255,.035) 0 1px,transparent 1px 48px);
  pointer-events:none;
}
.cta-inner{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:88px 0}
.field{
  display:flex;align-items:center;gap:8px;
  height:48px;padding:0 16px;border-radius:var(--r-pill);
  background:var(--surface-2);border:1px solid var(--line);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(53,191,163,.18)}
.field input{flex:1;min-width:0;background:transparent;border:0;outline:none;font-size:15px;color:var(--text-hi)}
.field input::placeholder{color:var(--text-faint)}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-elev);border-top:1px solid var(--line);margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;
  padding:72px 0 40px;
}
.footer-desc{font-size:14px;color:var(--text-lo);line-height:1.8;margin-top:12px;max-width:34ch}
.social-row{display:flex;gap:10px;margin-top:18px}
.social-btn{
  width:36px;height:36px;border-radius:var(--r-sm);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);color:var(--text-lo);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.social-btn:hover{border-color:var(--accent);color:var(--accent)}
.footer-title{font-size:14px;font-weight:600;color:var(--text-hi);margin-bottom:14px}
.footer-link{display:block;font-size:14px;color:var(--text-lo);line-height:1.8;padding:3px 0;transition:color .18s var(--ease)}
.footer-link:hover{color:var(--accent)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line);padding:20px 0 28px;font-size:14px;color:var(--text-lo);
}
.footer-bottom a{color:var(--text-lo)}
.footer-bottom a:hover{color:var(--accent)}

@media (max-width:1279px){
  .search-shell{width:200px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .search-shell{display:none}
  .nav-quick{display:none}
  .nav-cta{display:none}
  .menu-btn{display:inline-flex}
  .container-x{padding:0 24px}
  .footer-grid{grid-template-columns:1fr 1fr;padding:56px 0 32px}
  .cta-inner{grid-template-columns:1fr;gap:24px;padding:64px 0}
  .paper{padding:36px 28px}
  .article-h1{font-size:32px;max-width:100%}
}
@media (max-width:640px){
  .container-x{padding:0 20px}
  .nav-inner{height:56px}
  .article-h1{font-size:27px;line-height:1.4}
  .paper{padding:24px 20px}
  .paper-content{font-size:16px}
  .paper-content h2{font-size:20px;padding-left:14px}
  .paper-content h3{font-size:17px}
  .btn{height:40px;padding:0 18px;font-size:14px}
  .cta-inner{padding:56px 0}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .card:hover{transform:none}
}

/* roulang page: category1 */
:root{
  --bg:#0E1013;--bg-elev:#16191E;--surface:#1B1F25;--surface-2:#232830;
  --line:rgba(255,255,255,.08);--line-strong:rgba(255,255,255,.14);
  --brand:#F0562E;--brand-hover:#FF6E45;--brand-active:#D34420;
  --accent:#35BFA3;--gold:#E9B949;
  --text-hi:#F3F1EC;--text:#C9C8C3;--text-lo:#8E939B;--text-faint:#666B73;
  --paper:#F7F5F0;--paper-line:#E5E1D8;--paper-text:#23262C;--paper-lo:#5C6169;
  --r-sm:10px;--r-md:14px;--r-lg:20px;--r-xl:28px;--r-pill:999px;
  --sh-1:0 1px 0 rgba(255,255,255,.05) inset,0 10px 24px rgba(0,0,0,.35);
  --sh-2:0 1px 0 rgba(255,255,255,.07) inset,0 22px 48px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit}
button{cursor:pointer;border:none;background:none}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
@media(max-width:639px){.container-x{padding:0 20px}}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(14,16,19,.86);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.logo-wrap{display:inline-flex;align-items:center;gap:10px}
.logo-mark{
  width:28px;height:28px;border-radius:var(--r-sm);
  border:1px solid var(--brand);background:rgba(240,86,46,.08);
  display:inline-flex;align-items:center;justify-content:center;flex:none;
}
.logo-mark i{display:block;width:10px;height:10px;border-radius:2px;background:var(--brand)}
.logo-text{font-size:16px;font-weight:600;color:var(--text-hi);letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;padding:8px 12px;border-radius:var(--r-pill);
  font-size:14px;font-weight:500;color:var(--text-lo);
  transition:color .18s var(--ease),background .18s var(--ease);white-space:nowrap;
}
.nav-link:hover{color:var(--text-hi);background:rgba(255,255,255,.06)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{
  content:"";position:absolute;left:22%;right:22%;bottom:1px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-shell{
  display:flex;align-items:center;gap:8px;width:260px;height:38px;padding:0 12px;
  border-radius:var(--r-pill);background:var(--surface-2);border:1px solid var(--line);
  color:var(--text-faint);transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-shell:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px rgba(53,191,163,.18)}
.search-input{flex:1;min-width:0;background:transparent;border:none;outline:none;color:var(--text-hi);font-size:14px}
.search-input::placeholder{color:var(--text-faint)}
.kbd{font-size:11px;line-height:1.4;padding:1px 5px;border:1px solid var(--line-strong);border-radius:6px;color:var(--text-faint)}
.nav-quick{font-size:14px;color:var(--text-lo);transition:color .18s var(--ease)}
.nav-quick:hover{color:var(--text-hi)}
.nav-cta{height:38px;padding:0 18px;font-size:14px}
.menu-btn{
  display:none;align-items:center;justify-content:center;width:40px;height:40px;
  border-radius:var(--r-sm);border:1px solid var(--line);color:var(--text-hi);
}
.menu-btn:hover{border-color:var(--line-strong)}
@media(max-width:1023px){
  .nav-links,.search-shell,.nav-quick{display:none}
  .menu-btn{display:inline-flex}
  .nav-inner{height:56px}
}
.drawer{
  position:fixed;left:0;right:0;top:56px;z-index:55;
  background:var(--bg-elev);border-bottom:1px solid var(--line);
  padding:16px 20px 22px;display:none;flex-direction:column;gap:6px;
}
.drawer.open{display:flex}
.drawer .nav-link{padding:12px 10px;border-radius:var(--r-md)}
.drawer .nav-link.active::after{display:none}
.drawer .nav-link.active{background:rgba(240,86,46,.1)}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:44px;padding:0 14px;margin:8px 0 4px;
  border-radius:var(--r-pill);background:var(--surface-2);border:1px solid var(--line);color:var(--text-faint);
}
.drawer-search input{flex:1;background:transparent;border:none;outline:none;color:var(--text-hi);font-size:14px}
.drawer-search input::placeholder{color:var(--text-faint)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn-primary{background:var(--brand);color:#14171C}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px)}
.btn-primary:active{background:var(--brand-active);transform:translateY(0)}
.btn-ghost{background:transparent;border:1px solid var(--line-strong);color:var(--text-hi)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--accent)}
.link-arrow svg{transition:transform .2s var(--ease)}
.link-arrow:hover svg{transform:translateX(2px)}
@media(max-width:639px){.btn{height:40px;padding:0 18px;font-size:14px}}

/* ---------- 横幅与面包屑 ---------- */
.page-banner{position:relative;height:300px;overflow:hidden;background:var(--bg-elev)}
.banner-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5}
.banner-veil{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(14,16,19,.94) 0%,rgba(14,16,19,.72) 52%,rgba(14,16,19,.42) 100%),
             linear-gradient(180deg,rgba(14,16,19,.4) 0%,rgba(14,16,19,.9) 100%);
}
.banner-content{position:relative;height:100%;display:flex;flex-direction:column;justify-content:space-between;padding-top:24px;padding-bottom:34px}
.crumb{font-size:13px;color:var(--text-lo);display:flex;align-items:center;gap:8px;line-height:1.5}
.crumb a:hover{color:var(--accent)}
.crumb-cur{color:var(--text);max-width:40ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.banner-text{max-width:720px}
.banner-text h1{
  font-size:46px;line-height:1.2;font-weight:600;letter-spacing:-.01em;color:var(--text-hi);
}
.banner-text p{margin-top:14px;font-size:16px;color:var(--text);max-width:44ch}
@media(max-width:1023px){.page-banner{height:260px}.banner-text h1{font-size:36px}}
@media(max-width:639px){
  .page-banner{height:220px}
  .banner-text h1{font-size:30px}
  .banner-text p{font-size:14px;margin-top:10px}
  .banner-content{padding-bottom:22px}
}

/* ---------- 通用区块 ---------- */
.section{padding:96px 0}
.section-tight{padding:72px 0}
@media(max-width:1023px){.section{padding:72px 0}.section-tight{padding:56px 0}}
@media(max-width:639px){.section{padding:56px 0}.section-tight{padding:44px 0}}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
h2.sec-title{
  font-size:30px;line-height:1.35;font-weight:600;color:var(--text-hi);letter-spacing:-.01em;
  display:flex;align-items:center;gap:12px;
}
.seq{
  font-size:13px;font-weight:600;color:var(--brand);border:1px solid rgba(240,86,46,.4);
  border-radius:var(--r-sm);padding:2px 7px;line-height:1.4;flex:none;
}
h3{font-size:19px;font-weight:600;color:var(--text-hi);line-height:1.5}
.lead{font-size:16px;color:var(--text);margin-top:14px}
.hr-line{height:1px;background:var(--line);border:0}
@media(max-width:639px){
  h2.sec-title{font-size:22px}
  h3{font-size:17px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
}

/* ---------- 交替图文长块 ---------- */
.split-block{
  display:grid;grid-template-columns:repeat(12,1fr);gap:24px;align-items:center;
  padding:32px 0;
}
.split-block + .split-block{border-top:1px dashed rgba(255,255,255,.1)}
.split-media{grid-column:span 5}
.split-body{grid-column:span 7}
.split-block.reverse .split-media{order:2}
.split-block.reverse .split-body{order:1}
.split-media img{width:100%;height:250px;object-fit:cover;border-radius:var(--r-md);border:1px solid var(--line)}
.split-body ul{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.split-body li{display:flex;gap:12px;font-size:15px;line-height:1.8;color:var(--text)}
.dot{flex:none;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-top:11px}
.split-body li strong{color:var(--text-hi);font-weight:600}
@media(max-width:1023px){
  .split-media,.split-body{grid-column:span 12}
  .split-block.reverse .split-media,.split-block.reverse .split-body{order:0}
  .split-media img{height:210px}
  .split-block{padding:24px 0}
}

/* ---------- 卡片 ---------- */
.card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-2)}
.card-media{position:relative;overflow:hidden;background:var(--surface-2)}
.card-media img{width:100%;height:160px;object-fit:cover;transition:transform .24s var(--ease)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:17px;font-weight:600;color:var(--text-hi);line-height:1.5}
.card:hover .card-title{color:var(--accent)}
.card-desc{
  font-size:14px;line-height:1.75;color:var(--text-lo);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-meta{font-size:13px;color:var(--text-lo);display:flex;align-items:center;gap:8px;margin-top:auto}
.tag{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-pill);
  background:rgba(53,191,163,.1);color:var(--accent);font-size:12px;line-height:1;white-space:nowrap;
}
.badge-gold{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--r-pill);
  border:1px solid var(--gold);color:var(--gold);font-size:12px;line-height:1;background:transparent;
}
.corner-tag{
  position:absolute;top:10px;left:10px;height:22px;padding:0 10px;border-radius:var(--r-pill);
  background:rgba(14,16,19,.72);color:var(--accent);font-size:12px;line-height:22px;
}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;margin-top:32px;
}
.stat-cell{background:var(--bg-elev);padding:22px 20px}
.stat-num{display:block;font-size:30px;font-weight:600;color:var(--text-hi);line-height:1.2}
.stat-label{display:block;margin-top:6px;font-size:13px;color:var(--text-lo)}
@media(max-width:639px){.stat-strip{grid-template-columns:1fr}}

/* ---------- 侧栏 ---------- */
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;box-shadow:var(--sh-1)}
.side-card + .side-card{margin-top:20px}
.side-title{font-size:14px;font-weight:600;color:var(--text-hi);letter-spacing:.02em;margin-bottom:14px}
.side-nav a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 12px;border-radius:var(--r-md);font-size:14px;color:var(--text);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.side-nav a:hover{background:var(--surface-2);color:var(--text-hi)}
.side-nav a.cur{background:rgba(240,86,46,.1);color:var(--brand)}
.side-nav a span.arw{color:var(--text-faint);font-size:12px}
.side-list li{font-size:14px;color:var(--text);line-height:1.7;padding:8px 0;border-bottom:1px solid var(--line)}
.side-list li:last-child{border-bottom:0}
.side-list a:hover{color:var(--accent)}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:24px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden}
.faq-item.open{border-color:var(--line-strong)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:600;color:var(--text-hi);line-height:1.6;
}
.faq-q .ico{
  flex:none;width:22px;height:22px;border-radius:50%;border:1px solid var(--line-strong);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-lo);
  transition:transform .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.faq-item.open .faq-q .ico{transform:rotate(45deg);color:var(--brand);border-color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-a p{padding:0 20px 18px;font-size:15px;line-height:1.8;color:var(--text-lo)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;background:var(--bg-elev);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:80px 0;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:rgba(240,86,46,.08);
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:44px 44px,44px 44px;
}
.cta-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.cta-grid h2{font-size:30px;font-weight:600;color:var(--text-hi);line-height:1.35}
.cta-grid p.note{margin-top:14px;font-size:15px;color:var(--text);max-width:40ch}
.cta-form{display:flex;flex-direction:column;gap:14px}
.cta-form .row{display:flex;gap:12px}
.cta-form input{
  flex:1;height:44px;padding:0 20px;border-radius:var(--r-pill);
  background:var(--surface-2);border:1px solid var(--line);color:var(--text-hi);font-size:15px;outline:none;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.cta-form input::placeholder{color:var(--text-faint)}
.cta-form input:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(53,191,163,.18)}
.form-hint{font-size:12px;color:var(--text-faint);line-height:1.6}
@media(max-width:1023px){
  .cta-grid{grid-template-columns:1fr;gap:28px}
  .cta-band{padding:56px 0}
  .cta-grid h2{font-size:24px}
}
@media(max-width:639px){
  .cta-form .row{flex-direction:column}
  .cta-form .btn{width:100%}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-elev);border-top:1px solid var(--line)}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:32px;padding:64px 0 40px}
.footer-desc{font-size:14px;line-height:1.8;color:var(--text-lo);margin-top:12px;max-width:34ch}
.footer-title{font-size:14px;font-weight:600;color:var(--text-hi);margin-bottom:14px}
.footer-link{display:block;font-size:14px;color:var(--text-lo);padding:5px 0;transition:color .18s var(--ease)}
a.footer-link:hover{color:var(--accent)}
.social-row{display:flex;gap:10px;margin-top:16px}
.social-btn{
  width:36px;height:36px;border-radius:var(--r-sm);border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--text-lo);
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.social-btn:hover{border-color:var(--accent);color:var(--accent)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-faint)}
.to-top{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-lo);
  border:1px solid var(--line);border-radius:var(--r-pill);height:34px;padding:0 14px;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.to-top:hover{border-color:var(--brand);color:var(--brand)}
@media(max-width:1023px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:28px;padding:48px 0 32px}}
@media(max-width:639px){.footer-grid{grid-template-columns:1fr;padding:40px 0 24px}}

@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --bg:#0E1013;
  --bg-elev:#16191E;
  --surface:#1B1F25;
  --surface-2:#232830;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --brand:#F0562E;
  --brand-hover:#FF6E45;
  --brand-active:#D34420;
  --accent:#35BFA3;
  --gold:#E9B949;
  --text-hi:#F3F1EC;
  --text:#C9C8C3;
  --text-lo:#8E939B;
  --text-faint:#666B73;
  --paper:#F7F5F0;
  --paper-line:#E5E1D8;
  --paper-text:#23262C;
  --paper-lo:#5C6169;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 1px 0 rgba(255,255,255,.05) inset, 0 10px 24px rgba(0,0,0,.35);
  --sh-2:0 1px 0 rgba(255,255,255,.07) inset, 0 22px 48px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,p{margin:0}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums}
.container-x{max-width:1240px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.full-line{height:1px;background:var(--line);border:0;margin:0}
.film-divider{border-top:1px dashed rgba(255,255,255,.14)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(14,16,19,.82);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.logo-wrap{display:inline-flex;align-items:center;gap:10px}
.logo-mark{
  width:28px;height:28px;border-radius:var(--r-sm);
  border:1px solid rgba(240,86,46,.55);background:rgba(240,86,46,.12);
  display:grid;place-items:center;flex:0 0 auto;
}
.logo-mark i{display:block;width:10px;height:10px;border-radius:3px;background:var(--brand)}
.logo-text{font-size:16px;font-weight:600;color:var(--text-hi);letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-link{
  position:relative;padding:8px 12px;border-radius:var(--r-pill);
  font-size:14px;font-weight:500;color:var(--text-lo);
  transition:color .18s var(--ease),background-color .18s var(--ease);white-space:nowrap;
}
.nav-link:hover{color:var(--text-hi);background:rgba(255,255,255,.06)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{
  content:"";position:absolute;left:20%;right:20%;bottom:1px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-shell{
  display:flex;align-items:center;gap:8px;width:260px;height:40px;padding:0 14px;
  background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-pill);
  color:var(--text-faint);transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.search-shell:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px rgba(53,191,163,.22)}
.search-input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text-hi);
}
.search-input::placeholder{color:var(--text-faint);font-size:14px}
.kbd{
  font-size:11px;color:var(--text-faint);border:1px solid var(--line);
  border-radius:6px;padding:1px 5px;line-height:1.4;
}
.nav-quick{font-size:14px;color:var(--text-lo);transition:color .18s var(--ease)}
.nav-quick:hover{color:var(--text-hi)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-primary{background:var(--brand);color:#14171C}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px)}
.btn-primary:active{background:var(--brand-active)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-hi)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.nav-cta{height:40px;padding:0 18px;font-size:14px}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--accent);
  font-size:14px;font-weight:500;
}
.btn-link svg{transition:transform .18s var(--ease)}
.btn-link:hover svg{transform:translateX(2px)}
.menu-btn{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);
  background:var(--surface-2);border:1px solid var(--line);
  align-items:center;justify-content:center;color:var(--text-hi);cursor:pointer;
}
.drawer{position:fixed;inset:0;z-index:80;background:rgba(9,10,12,.72)}
.drawer-panel{
  position:absolute;top:56px;left:0;right:0;background:var(--bg-elev);
  border-bottom:1px solid var(--line);padding:20px 20px 26px;
  display:grid;gap:16px;
}
.drawer-links{display:grid;gap:4px}
.drawer-links a{padding:12px 10px;border-radius:var(--r-md);font-size:15px;color:var(--text);border:1px solid var(--line)}
.drawer-links a.active{color:var(--brand);border-color:rgba(240,86,46,.4);background:rgba(240,86,46,.08)}

/* ---------- breadcrumb ---------- */
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-lo);margin-top:24px}
.crumbs a{color:var(--text-lo);transition:color .18s var(--ease)}
.crumbs a:hover{color:var(--accent)}
.crumbs span.sep{color:var(--text-faint)}
.crumbs .now{color:var(--text);max-width:52vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- banner ---------- */
.page-banner{position:relative;height:300px;overflow:hidden;display:flex;align-items:flex-end}
.page-banner__bg{
  position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
}
.page-banner__mask{
  position:absolute;inset:0;
  background:
    linear-gradient(90deg,rgba(14,16,19,.94) 0%,rgba(14,16,19,.72) 52%,rgba(14,16,19,.44) 100%),
    linear-gradient(180deg,rgba(14,16,19,.42) 0%,rgba(14,16,19,.96) 100%);
}
.page-banner__inner{position:relative;z-index:2;width:100%;padding-bottom:34px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--accent);
  border:1px solid rgba(53,191,163,.28);background:rgba(53,191,163,.08);
  border-radius:var(--r-pill);padding:4px 12px;margin-bottom:14px;
}
.page-banner h1{
  font-size:clamp(30px,4vw,48px);font-weight:600;letter-spacing:-.01em;
  line-height:1.25;color:var(--text-hi);
}
.page-banner .lede{margin-top:12px;max-width:660px;font-size:16px;color:var(--text)}

/* ---------- stats strip ---------- */
.stats-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;background:var(--line);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;
}
.stats-strip .cell{background:var(--bg);padding:20px 22px}
.cell .figure{font-size:26px;font-weight:600;color:var(--text-hi);line-height:1.3}
.cell .label{margin-top:4px;font-size:12px;color:var(--text-lo)}

/* ---------- section heading ---------- */
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.h2{
  font-size:clamp(22px,2.6vw,30px);font-weight:600;color:var(--text-hi);
  letter-spacing:-.01em;line-height:1.35;display:flex;align-items:center;gap:12px;
}
.h2::before{content:"";width:4px;height:22px;border-radius:2px;background:var(--brand);flex:0 0 auto}
.sub{margin-top:10px;font-size:15px;color:var(--text-lo);max-width:760px}

/* ---------- filter pills ---------- */
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.pill{
  display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:var(--r-pill);
  font-size:13px;color:var(--text-lo);background:var(--surface);border:1px solid var(--line);
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.pill:hover{color:var(--text-hi);border-color:var(--line-strong)}
.pill.is-on{color:var(--accent);border-color:rgba(53,191,163,.4);background:rgba(53,191,163,.08)}

/* ---------- waterfall ---------- */
.falls{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:start}
.fall-col{display:grid;gap:24px;min-width:0}
.fall-col--offset{margin-top:32px}
.fall-col--last{}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-2)}
.card__media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-elev)}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.card:hover .card__media img{transform:scale(1.04)}
.media-fallback{
  position:absolute;inset:0;display:grid;place-items:center;
  background:var(--bg-elev);border:1px solid var(--line);color:var(--text-faint);
}
.corner-tag{
  position:absolute;top:12px;left:12px;z-index:2;
  font-size:12px;padding:3px 10px;border-radius:var(--r-pill);
  color:var(--accent);background:rgba(14,16,19,.72);
  border:1px solid rgba(53,191,163,.35);backdrop-filter:blur(4px);
}
.card__body{padding:18px 20px 20px}
.card__title{font-size:18px;font-weight:600;color:var(--text-hi);line-height:1.5}
.card__desc{
  margin-top:8px;font-size:14.5px;color:var(--text-lo);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__meta{
  margin-top:14px;display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--text-lo);
}
.card__meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-faint)}
.tag{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--r-pill);
  font-size:12px;line-height:1.5;color:var(--accent);
  background:rgba(53,191,163,.1);border:1px solid rgba(53,191,163,.24);
}
.tag--gold{color:var(--gold);background:transparent;border-color:rgba(233,185,73,.45)}
.more-row{display:flex;justify-content:center;margin-top:40px}

/* ---------- capability grid (non-equal) ---------- */
.cap-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 26px 22px;box-shadow:var(--sh-1);
}
.panel--elev{background:var(--bg-elev)}
.panel h3{font-size:19px;font-weight:600;color:var(--text-hi)}
.panel .note{margin-top:6px;font-size:14px;color:var(--text-lo)}
.spec-table{width:100%;border-collapse:collapse;margin-top:18px;font-size:14px}
.spec-table th,.spec-table td{
  text-align:left;padding:12px 10px;border-bottom:1px solid var(--line);
  color:var(--text);
}
.spec-table th{font-size:13px;font-weight:600;color:var(--text-lo)}
.spec-table td:first-child{color:var(--text-hi);font-weight:500}
.spec-table tr:last-child td{border-bottom:0}
.meter-list{display:grid;gap:18px;margin-top:20px}
.meter-item .top{display:flex;justify-content:space-between;font-size:13px;color:var(--text-lo)}
.meter{height:6px;border-radius:var(--r-pill);background:var(--surface-2);margin-top:8px;overflow:hidden}
.meter i{display:block;height:100%;border-radius:var(--r-pill);background:var(--accent)}
.meter i.is-brand{background:var(--brand)}
.mini-list{display:grid;gap:12px;margin-top:20px}
.mini-list li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text)}
.mini-list .idx{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;background:var(--surface-2);
  display:grid;place-items:center;font-size:12px;color:var(--text-lo);
}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:3fr 4fr 5fr;gap:24px;margin-top:32px}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh-1);
}
.step .step-no{font-size:12px;color:var(--accent);letter-spacing:.16em}
.step h3{margin-top:10px;font-size:17px;font-weight:600;color:var(--text-hi)}
.step p{margin-top:8px;font-size:14.5px;color:var(--text-lo);line-height:1.8}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;margin-top:28px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 20px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--text-hi);line-height:1.6;
}
.faq-icon{
  flex:0 0 auto;width:22px;height:22px;display:grid;place-items:center;
  color:var(--text-lo);transition:transform .2s var(--ease),color .2s var(--ease);
}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--brand)}
.faq-a{
  max-height:0;overflow:hidden;padding:0 20px;font-size:15px;line-height:1.85;color:var(--text-lo);
  transition:max-height .24s var(--ease),padding .24s var(--ease);
}
.faq-item.open .faq-a{padding-bottom:18px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--bg-elev);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(rgba(240,86,46,.08),rgba(240,86,46,.08)),
    repeating-linear-gradient(90deg,rgba(255,255,255,.028) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(0deg,rgba(255,255,255,.028) 0 1px,transparent 1px 48px);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;padding:88px 0}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);font-weight:600;color:var(--text-hi);letter-spacing:-.01em}
.cta-inner .cta-note{margin-top:12px;font-size:15px;color:var(--text-lo);max-width:520px}
.form-row{display:flex;gap:12px}
.input-pill{
  flex:1;min-width:0;height:44px;padding:0 18px;border-radius:var(--r-pill);
  background:var(--surface-2);border:1px solid var(--line);color:var(--text-hi);
  font-size:14px;outline:none;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.input-pill::placeholder{color:var(--text-faint)}
.input-pill:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(53,191,163,.22)}
.form-tip{margin-top:12px;font-size:12px;color:var(--text-faint);line-height:1.7}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-elev);border-top:1px solid var(--line);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:48px}
.footer-desc{margin-top:12px;font-size:14px;color:var(--text-lo);line-height:1.8;max-width:330px}
.footer-title{font-size:14px;font-weight:600;color:var(--text-hi);margin-bottom:14px}
.footer-link{display:block;font-size:14px;color:var(--text-lo);margin-bottom:10px;transition:color .18s var(--ease)}
a.footer-link:hover{color:var(--accent)}
.social-row{display:flex;gap:10px;margin-top:18px}
.social-btn{
  width:36px;height:36px;border-radius:var(--r-sm);border:1px solid var(--line);
  display:grid;place-items:center;color:var(--text-lo);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.social-btn:hover{color:var(--accent);border-color:rgba(53,191,163,.4)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 28px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-lo);
}
.to-top{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-lo);
  border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 14px;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.to-top:hover{color:var(--text-hi);border-color:var(--line-strong)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .search-shell{width:210px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .search-shell{display:none}
  .nav-quick{display:none}
  .menu-btn{display:flex}
  .section{padding:72px 0}
  .falls{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fall-col--offset{margin-top:0}
  .fall-col--last{grid-column:1 / -1;grid-template-columns:repeat(2,minmax(0,1fr));display:grid}
  .cap-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .steps .step:last-child{grid-column:1 / -1}
  .cta-inner{grid-template-columns:1fr;padding:64px 0;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .stats-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:639px){
  .container-x{padding:0 20px}
  .nav-inner{height:56px}
  .section{padding:56px 0}
  .section--tight{padding:48px 0}
  .page-banner{height:220px}
  .page-banner__inner{padding-bottom:24px}
  .falls{grid-template-columns:1fr}
  .fall-col--last{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .steps .step:last-child{grid-column:auto}
  .head-row{flex-direction:column;align-items:flex-start;gap:12px}
  .form-row{flex-direction:column}
  .form-row .btn{width:100%}
  .btn{height:40px}
  .footer-grid{grid-template-columns:1fr}
  .cta-inner{padding:56px 0}
  .crumbs .now{max-width:44vw}
  .spec-table th:nth-child(3),.spec-table td:nth-child(3){display:none}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .card:hover{transform:none}
  .card:hover .card__media img{transform:none}
}

/* roulang page: category3 */
:root{
  --bg:#0E1013;
  --bg-elev:#16191E;
  --surface:#1B1F25;
  --surface-2:#232830;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.14);
  --brand:#F0562E;
  --brand-hover:#FF6E45;
  --brand-active:#D34420;
  --accent:#35BFA3;
  --gold:#E9B949;
  --text-hi:#F3F1EC;
  --text:#C9C8C3;
  --text-lo:#8E939B;
  --text-faint:#666B73;
  --paper:#F7F5F0;
  --paper-line:#E5E1D8;
  --paper-text:#23262C;
  --paper-lo:#5C6169;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:28px;
  --r-pill:999px;
  --sh-1:0 1px 0 rgba(255,255,255,.05) inset,0 10px 24px rgba(0,0,0,.35);
  --sh-2:0 1px 0 rgba(255,255,255,.07) inset,0 22px 48px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
.site-body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
.site-body img{display:block;max-width:100%;height:auto}
.site-body a{color:inherit;text-decoration:none}
.site-body button,.site-body input{font-family:inherit;font-size:inherit;color:inherit}
.site-body h1,.site-body h2,.site-body h3,.site-body p{margin:0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

.container-x{width:100%;max-width:1240px;margin:0 auto;padding-left:32px;padding-right:32px}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(14,16,19,.82);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.logo-wrap{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:28px;height:28px;border-radius:var(--r-sm);
  border:1px solid rgba(240,86,46,.55);
  background:rgba(240,86,46,.08);
  display:inline-flex;align-items:center;justify-content:center;
}
.logo-mark i{display:block;width:9px;height:9px;border-radius:2px;background:var(--brand)}
.logo-text{font-size:16px;font-weight:600;color:var(--text-hi);white-space:nowrap;letter-spacing:.01em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:36px;padding:0 12px;
  border-radius:var(--r-pill);font-size:14px;font-weight:500;color:var(--text-lo);
  white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--text-hi);background:rgba(255,255,255,.06)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  bottom:-2px;width:60%;height:2px;border-radius:2px;background:var(--brand);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.search-shell{
  display:flex;align-items:center;gap:8px;width:260px;height:38px;padding:0 14px;
  border-radius:var(--r-pill);background:var(--surface-2);border:1px solid var(--line);
  color:var(--text-faint);flex-shrink:0;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.search-shell:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px rgba(53,191,163,.22)}
.search-input{
  flex:1;min-width:0;background:transparent;border:0;outline:none;
  font-size:14px;color:var(--text-hi);
}
.search-input::placeholder{color:var(--text-faint)}
.kbd{
  font-size:11px;line-height:1;padding:4px 6px;border-radius:6px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  color:var(--text-faint);font-variant-numeric:tabular-nums;
}
.nav-quick{font-size:14px;color:var(--text-lo);transition:color .18s var(--ease);white-space:nowrap}
.nav-quick:hover{color:var(--text-hi)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn-primary{background:var(--brand);color:#14171C}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px)}
.btn-primary:active{background:var(--brand-active);transform:translateY(0)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-hi)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.nav-cta{height:38px;padding:0 18px;font-size:14px;white-space:nowrap}
.menu-btn{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border-radius:var(--r-sm);border:1px solid var(--line);background:var(--surface-2);
  color:var(--text-hi);cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.menu-btn:hover{border-color:var(--accent);color:var(--accent)}

/* mobile drawer */
.mobile-drawer{
  display:none;position:fixed;left:0;right:0;top:56px;z-index:55;
  background:rgba(14,16,19,.98);border-bottom:1px solid var(--line);
  padding:18px 20px 24px;
}
.mobile-drawer.open{display:block}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:16px}
.drawer-link{
  display:block;padding:11px 14px;border-radius:var(--r-md);
  font-size:15px;font-weight:500;color:var(--text-lo);
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.drawer-link:hover{color:var(--text-hi);background:rgba(255,255,255,.05)}
.drawer-link.active{color:var(--brand);background:rgba(240,86,46,.08)}
.drawer-search{width:100%;height:42px}
.drawer-cta{width:100%;margin-top:14px}

/* ============ breadcrumb ============ */
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  padding:24px 0 20px;font-size:13px;color:var(--text-lo);
}
.breadcrumb a{transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--accent)}
.bc-sep{color:var(--text-faint)}
.bc-current{max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text)}

/* ============ banner ============ */
.page-banner{
  position:relative;display:flex;align-items:center;overflow:hidden;
  min-height:300px;background:var(--bg-elev);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.page-banner-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.5;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(14,16,19,.95) 0%,rgba(14,16,19,.8) 46%,rgba(14,16,19,.42) 100%);
}
.page-banner-inner{position:relative;z-index:2;padding-top:54px;padding-bottom:54px}
.page-banner-title{
  font-size:clamp(30px,4vw,46px);font-weight:600;line-height:1.2;
  letter-spacing:-.01em;color:var(--text-hi);margin-top:14px;margin-bottom:12px;
}
.page-banner-sub{max-width:640px;font-size:16px;color:var(--text)}

/* ============ tags ============ */
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;line-height:1;letter-spacing:.02em;
}
.tag-accent{background:rgba(53,191,163,.1);color:var(--accent);border:1px solid rgba(53,191,163,.28)}
.tag-gold{background:transparent;color:var(--gold);border:1px solid rgba(233,185,73,.45)}
.tag-plain{background:rgba(255,255,255,.05);color:var(--text-lo);border:1px solid var(--line)}

/* ============ sections ============ */
.section{padding:96px 0}
.section-alt{background:var(--bg-elev);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:44px}
.section-title{
  font-size:30px;font-weight:600;color:var(--text-hi);letter-spacing:-.01em;
  line-height:1.35;margin-bottom:14px;
}
.section-title::before{
  content:"";display:inline-block;width:4px;height:20px;border-radius:2px;
  background:var(--brand);margin-right:12px;vertical-align:-2px;
}
.section-lead{font-size:16px;line-height:1.85;color:var(--text-lo);max-width:720px}
.rule-line{height:1px;background:var(--line);border:0;margin:0}

/* ============ timeline ============ */
.timeline{position:relative;list-style:none;margin:0;padding:0 0 0 34px}
.timeline::before{
  content:"";position:absolute;left:9px;top:10px;bottom:10px;width:1px;
  background:var(--line-strong);
}
.tl-item{position:relative;padding-bottom:28px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:-31px;top:22px;width:12px;height:12px;border-radius:50%;
  background:var(--brand);box-shadow:0 0 0 4px rgba(240,86,46,.14);
}
.tl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 28px;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.tl-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-2)}
.tl-badge{
  display:inline-flex;align-items:center;justify-content:center;
  width:24px;height:24px;border-radius:50%;background:var(--surface-2);
  color:var(--text-lo);font-size:12px;font-variant-numeric:tabular-nums;
  margin-bottom:14px;
}
.tl-title{font-size:19px;font-weight:600;color:var(--text-hi);margin-bottom:10px}
.tl-desc{font-size:15.5px;line-height:1.85;color:var(--text-lo);max-width:720px;margin-bottom:14px}
.tl-meta{
  display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-faint);
  font-variant-numeric:tabular-nums;
}

/* ============ gallery ============ */
.gallery-grid{display:grid;grid-template-columns:5fr 4fr 3fr;gap:24px;align-items:start}
.g-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.g-item:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-2)}
.g-item:nth-child(2){margin-top:32px}
.g-thumb{
  aspect-ratio:16/9;overflow:hidden;background:var(--bg-elev);
  border-bottom:1px solid var(--line);
}
.g-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.g-item:hover .g-thumb img{transform:scale(1.04)}
.g-body{padding:20px 22px 24px}
.g-title{font-size:18px;font-weight:600;color:var(--text-hi);margin-bottom:10px}
.g-text{font-size:15px;line-height:1.8;color:var(--text-lo);margin-bottom:14px}
.g-meta{font-size:13px;color:var(--text-faint);font-variant-numeric:tabular-nums}

/* ============ fact row ============ */
.fact-row{display:grid;grid-template-columns:3fr 3fr 2fr 4fr;gap:16px;margin-top:44px}
.fact{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 22px;
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.fact:hover{border-color:var(--line-strong);transform:translateY(-3px)}
.fact-num{
  font-size:26px;font-weight:600;color:var(--text-hi);letter-spacing:-.01em;
  font-variant-numeric:tabular-nums;line-height:1.3;
}
.fact-label{font-size:13px;color:var(--text-lo);margin-top:2px}
.fact-line{width:28px;height:2px;border-radius:2px;background:var(--accent);margin-bottom:12px;opacity:.8}

/* ============ faq ============ */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .2s var(--ease);
}
.faq-item.open{border-color:var(--line-strong)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text-hi);line-height:1.6;
}
.faq-icon{position:relative;width:18px;height:18px;flex-shrink:0;transition:transform .2s var(--ease)}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--text-lo);border-radius:2px}
.faq-icon::before{left:0;top:8px;width:18px;height:1.5px}
.faq-icon::after{left:8px;top:0;width:1.5px;height:18px}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s var(--ease)}
.faq-item.open .faq-a{max-height:420px}
.faq-a-inner{
  padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-lo);
  max-width:760px;
}

/* ============ cta ============ */
.cta-band{position:relative;overflow:hidden;background:var(--bg-elev);border-top:1px solid var(--line);padding:80px 0}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(240,86,46,.08)}
.cta-band::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:44px 44px;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.cta-title{font-size:28px;font-weight:600;color:var(--text-hi);letter-spacing:-.01em;margin-bottom:12px}
.cta-sub{font-size:16px;color:var(--text-lo);max-width:420px}
.cta-form{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.input-pill{
  flex:1 1 220px;min-width:0;height:44px;padding:0 20px;border-radius:var(--r-pill);
  background:var(--surface-2);border:1px solid var(--line);color:var(--text-hi);
  outline:none;font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.input-pill::placeholder{color:var(--text-faint)}
.input-pill:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(53,191,163,.22)}
.cta-note{flex:1 1 100%;font-size:12px;line-height:1.7;color:var(--text-faint)}

/* ============ footer ============ */
.site-footer{background:var(--bg-elev);border-top:1px solid var(--line);padding-top:72px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-title{font-size:13px;font-weight:600;letter-spacing:.06em;color:var(--text-hi);margin-bottom:16px}
.footer-link{
  display:block;font-size:14px;color:var(--text-lo);padding:4px 0;
  transition:color .18s var(--ease);
}
.footer-link:hover{color:var(--accent)}
.footer-desc{margin:12px 0 18px;font-size:14px;line-height:1.8;color:var(--text-lo);max-width:320px}
.social-row{display:flex;gap:10px}
.social-btn{
  display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;
  border-radius:var(--r-sm);border:1px solid var(--line);color:var(--text-lo);
  transition:border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.social-btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:20px 0 24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-faint);
}
.footer-legal{display:flex;gap:18px}
.footer-legal a{transition:color .18s var(--ease)}
.footer-legal a:hover{color:var(--text-hi)}
.to-top{
  display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 14px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:transparent;
  color:var(--text-lo);font-size:13px;cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.to-top:hover{border-color:var(--brand);color:var(--brand)}

/* ============ responsive ============ */
@media (max-width:1023px){
  .nav-links,.search-shell,.nav-quick{display:none}
  .menu-btn{display:inline-flex}
  .section{padding:72px 0}
  .gallery-grid{grid-template-columns:1fr 1fr}
  .gallery-grid .g-item:nth-child(2){margin-top:0}
  .gallery-grid .g-item:nth-child(3){grid-column:span 2}
  .fact-row{grid-template-columns:1fr 1fr}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:639px){
  .container-x{padding-left:20px;padding-right:20px}
  .section{padding:56px 0}
  .nav-inner{height:56px}
  .nav-cta{height:36px;padding:0 14px;font-size:13px}
  .page-banner{min-height:220px}
  .page-banner-inner{padding-top:40px;padding-bottom:40px}
  .page-banner-title{font-size:30px}
  .section-title{font-size:22px}
  .gallery-grid{grid-template-columns:1fr}
  .gallery-grid .g-item:nth-child(3){grid-column:auto}
  .fact-row{grid-template-columns:1fr 1fr}
  .timeline{padding-left:26px}
  .timeline::before{left:7px}
  .tl-dot{left:-23px;top:20px}
  .tl-card{padding:20px 20px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-band{padding:56px 0}
  .cta-title{font-size:23px}
  .cta-form .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category4 */
:root{
  --bg:#0E1013;--bg-elev:#16191E;--surface:#1B1F25;--surface-2:#232830;
  --line:rgba(255,255,255,.08);--line-strong:rgba(255,255,255,.14);
  --brand:#F0562E;--brand-hover:#FF6E45;--brand-active:#D34420;
  --accent:#35BFA3;--gold:#E9B949;
  --text-hi:#F3F1EC;--text:#C9C8C3;--text-lo:#8E939B;--text-faint:#666B73;
  --r-sm:10px;--r-md:14px;--r-lg:20px;--r-xl:28px;--r-pill:999px;
  --sh-1:0 1px 0 rgba(255,255,255,.05) inset,0 10px 24px rgba(0,0,0,.35);
  --sh-2:0 1px 0 rgba(255,255,255,.07) inset,0 22px 48px rgba(0,0,0,.55);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,sans-serif;
  font-size:16px;line-height:1.85;letter-spacing:.01em;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
p{margin:0}
h1,h2,h3,h4{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums}
.section{padding:96px 0}
.divider-full{height:1px;width:100%;background:var(--line)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(14,16,19,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px}
.logo-wrap{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:28px;height:28px;border-radius:var(--r-sm);border:1px solid var(--brand);background:rgba(240,86,46,.08);display:grid;place-items:center}
.logo-mark i{display:block;width:10px;height:10px;border-radius:2px;background:var(--brand)}
.logo-text{font-size:16px;font-weight:600;color:var(--text-hi);letter-spacing:-.01em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:36px;padding:0 12px;border-radius:var(--r-pill);font-size:14px;font-weight:500;color:var(--text-lo);transition:color .18s var(--ease),background-color .18s var(--ease)}
.nav-link:hover{color:var(--text-hi);background:rgba(255,255,255,.06)}
.nav-link.active{color:var(--brand)}
.nav-link.active::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:60%;height:2px;border-radius:2px;background:var(--brand)}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-shell{display:flex;align-items:center;gap:8px;width:260px;height:40px;padding:0 14px;border-radius:var(--r-pill);background:var(--surface-2);border:1px solid var(--line);color:var(--text-faint);transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.search-shell:focus-within{border-color:var(--accent);box-shadow:0 0 0 2px rgba(53,191,163,.18)}
.search-input{flex:1;min-width:0;background:transparent;border:0;outline:none;font-size:14px;color:var(--text-hi)}
.search-input::placeholder{color:var(--text-faint)}
.kbd{font-size:11px;line-height:1.4;color:var(--text-lo);border:1px solid var(--line-strong);border-radius:6px;padding:1px 6px}
.nav-quick{font-size:14px;color:var(--text-lo);transition:color .18s var(--ease)}
.nav-quick:hover{color:var(--text-hi)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-pill);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;transition:transform .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease)}
.btn-primary{background:var(--brand);color:#14171C}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px)}
.btn-primary:active{background:var(--brand-active);transform:none}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-hi)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.nav-cta{height:38px;padding:0 18px;font-size:14px}
.menu-btn{display:none;width:40px;height:40px;align-items:center;justify-content:center;border-radius:var(--r-pill);border:1px solid var(--line-strong);background:transparent;color:var(--text-hi);cursor:pointer}
.menu-btn:hover{border-color:var(--accent);color:var(--accent)}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--accent)}
.link-more svg{transition:transform .2s var(--ease)}
.link-more:hover svg{transform:translateX(2px)}

/* ---------- mobile drawer ---------- */
.mobile-drawer{display:none;position:fixed;left:0;right:0;top:64px;bottom:0;z-index:70;background:var(--bg);border-top:1px solid var(--line);padding:24px 20px 40px;overflow-y:auto}
.mobile-drawer.open{display:block}
.drawer-link{display:block;padding:14px 4px;font-size:16px;font-weight:500;color:var(--text);border-bottom:1px solid var(--line)}
.drawer-link.active{color:var(--brand)}
.drawer-cta{margin-top:24px;width:100%}

/* ---------- banner ---------- */
.page-banner{position:relative;min-height:300px;display:flex;align-items:flex-end;background-image:url('/assets/images/backpic/back-3.webp');background-size:cover;background-position:center;border-bottom:1px solid var(--line);overflow:hidden}
.page-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,11,13,.94) 0%,rgba(10,11,13,.76) 46%,rgba(10,11,13,.44) 100%)}
.banner-inner{position:relative;z-index:2;width:100%;padding-top:72px;padding-bottom:44px}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-lo);margin-bottom:18px}
.crumb a{transition:color .18s var(--ease)}
.crumb a:hover{color:var(--text-hi)}
.crumb .sep{color:var(--text-faint)}
.crumb .cur{color:var(--text-hi);max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;color:var(--accent);margin-bottom:14px}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--accent);display:block}
.page-title{font-size:44px;line-height:1.18;font-weight:600;letter-spacing:-.01em;color:var(--text-hi);max-width:760px}
.page-lead{margin-top:16px;font-size:17px;line-height:1.8;color:var(--text);max-width:640px}

/* ---------- section head ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:32px}
.sec-title{display:flex;align-items:center;gap:12px;font-size:30px;font-weight:600;line-height:1.3;letter-spacing:-.01em;color:var(--text-hi)}
.sec-num{font-size:12px;line-height:1;color:var(--brand);border:1px solid var(--line-strong);border-radius:6px;padding:3px 7px;letter-spacing:0}
.sec-sub{font-size:15px;color:var(--text-lo);line-height:1.8;max-width:640px;margin-top:10px}

/* ---------- chips ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;padding-bottom:22px;border-bottom:1px solid var(--line)}
.chip{display:inline-flex;align-items:center;height:34px;padding:0 16px;border-radius:var(--r-pill);border:1px solid var(--line);background:var(--surface);color:var(--text-lo);font-size:13px}
.chip.is-on{background:rgba(240,86,46,.12);border-color:rgba(240,86,46,.45);color:var(--brand)}

/* ---------- entry list ---------- */
.entry{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;padding:18px 10px;border-bottom:1px solid var(--line);transition:background-color .2s var(--ease)}
.entry:hover{background:rgba(255,255,255,.04)}
.entry-title{font-size:17px;font-weight:600;color:var(--text-hi);margin-bottom:4px}
.entry-desc{font-size:14px;line-height:1.7;color:var(--text-lo)}
.entry-meta{display:flex;align-items:center;gap:12px;white-space:nowrap}
.entry-state{font-size:13px;color:var(--text-lo)}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);background:rgba(53,191,163,.08);color:var(--accent);font-size:12px}
.badge-gold{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);border:1px solid rgba(233,185,73,.5);color:var(--gold);font-size:12px}

/* ---------- cards ---------- */
.card-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:24px}
.card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease)}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--sh-2)}
.card-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-elev)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .24s var(--ease)}
.card:hover .card-cover img{transform:scale(1.04)}
.card-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,16,19,0) 45%,rgba(14,16,19,.55) 100%)}
.cover-badge{position:absolute;left:14px;top:14px;z-index:2;display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);background:rgba(14,16,19,.72);color:var(--accent);font-size:12px}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:18px;font-weight:600;line-height:1.5;color:var(--text-hi);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-text{font-size:14px;line-height:1.75;color:var(--text-lo);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:10px;margin-top:auto;font-size:13px;color:var(--text-lo)}

/* ---------- stat bar ---------- */
.stat-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.stat-cell{background:var(--bg-elev);padding:28px 24px}
.stat-num{font-size:32px;font-weight:600;line-height:1.1;color:var(--text-hi);letter-spacing:-.01em;font-variant-numeric:tabular-nums}
.stat-num small{font-size:15px;font-weight:500;color:var(--accent);margin-left:3px}
.stat-label{margin-top:8px;font-size:13px;line-height:1.6;color:var(--text-lo)}
.stat-note{margin-top:6px;font-size:12px;color:var(--text-faint)}

/* ---------- faq ---------- */
.faq-list{max-width:880px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;transition:border-color .2s var(--ease)}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item.open{border-color:var(--line-strong)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;background:transparent;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--text-hi);cursor:pointer}
.faq-icon{flex:none;width:20px;height:20px;color:var(--text-lo);transition:transform .2s var(--ease),color .2s var(--ease)}
.faq-item.open .faq-icon{transform:rotate(45deg);color:var(--brand)}
.faq-a{display:none;padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--text-lo);max-width:66ch}
.faq-item.open .faq-a{display:block}

/* ---------- cta ---------- */
.cta-band{position:relative;background:var(--bg-elev);border-top:1px solid var(--line);border-bottom:1px solid var(--line);overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(240,86,46,.08)}
.cta-band::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:48px 48px}
.cta-inner{position:relative;z-index:2;padding:88px 0}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.cta-title{font-size:30px;font-weight:600;line-height:1.3;letter-spacing:-.01em;color:var(--text-hi)}
.cta-desc{margin-top:14px;font-size:15px;line-height:1.8;color:var(--text);max-width:520px}
.field{width:100%;height:48px;border-radius:var(--r-pill);background:var(--surface-2);border:1px solid var(--line);padding:0 18px;font-size:15px;color:var(--text-hi);outline:none;transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.field::placeholder{color:var(--text-faint)}
.field:focus{border-color:var(--accent);box-shadow:0 0 0 2px rgba(53,191,163,.18)}
.form-row{display:flex;gap:12px;flex-wrap:wrap}
.form-row .field{flex:1;min-width:220px}
.form-note{margin-top:12px;font-size:12px;line-height:1.7;color:var(--text-lo)}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-elev);border-top:1px solid var(--line);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-title{font-size:14px;font-weight:600;color:var(--text-hi);margin-bottom:14px}
.footer-link{display:block;font-size:14px;line-height:1.7;color:var(--text-lo);margin-bottom:10px;transition:color .18s var(--ease)}
a.footer-link:hover{color:var(--text-hi)}
.footer-desc{font-size:14px;line-height:1.8;color:var(--text-lo);margin:10px 0 16px;max-width:330px}
.social-row{display:flex;gap:10px}
.social-btn{width:36px;height:36px;border-radius:var(--r-pill);border:1px solid var(--line-strong);display:grid;place-items:center;color:var(--text-lo);transition:border-color .18s var(--ease),color .18s var(--ease)}
.social-btn:hover{border-color:var(--accent);color:var(--accent)}
.footer-bottom{margin-top:48px;border-top:1px solid var(--line);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:14px;color:var(--text-lo)}
.footer-legal{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.footer-legal a{transition:color .18s var(--ease)}
.footer-legal a:hover{color:var(--text-hi)}

@media (max-width:1023px){
  .nav-links{display:none}
  .search-shell{display:none}
  .nav-quick{display:none}
  .menu-btn{display:inline-flex}
  .card-grid{grid-template-columns:1fr 1fr}
  .stat-bar{grid-template-columns:1fr 1fr}
  .cta-grid{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:72px 0}
}
@media (max-width:639px){
  .container-x{padding:0 20px}
  .nav-inner{height:56px}
  .mobile-drawer{top:56px}
  .nav-cta{display:none}
  .page-banner{min-height:220px}
  .banner-inner{padding-top:40px;padding-bottom:28px}
  .page-title{font-size:30px}
  .page-lead{font-size:15px}
  .section{padding:56px 0}
  .sec-title{font-size:22px}
  .cta-title{font-size:23px}
  .cta-inner{padding:56px 0}
  .card-grid{grid-template-columns:1fr}
  .stat-bar{grid-template-columns:1fr}
  .entry{grid-template-columns:1fr;gap:10px;padding:16px 8px}
  .entry-meta{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .btn{height:40px;font-size:14px}
  .form-row .field{min-width:100%}
  .form-row .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .card:hover{transform:none}
  .card:hover .card-cover img{transform:none}
}