/* roulang page: index */
:root{
  --ink:#221B36;
  --ink-deep:#14101F;
  --orange:#F0622B;
  --teal:#3FB8A8;
  --sand:#F6F3ED;
  --white:#FFFFFF;
  --text:#1A1720;
  --text-2:#5B5566;
  --text-3:#8C8798;
  --line:#E3DDD3;
  --error:#C0392B;
  --r-card:18px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --r-input:8px;
  --sh-1:0 2px 8px rgba(20,16,31,.05);
  --sh-2:0 12px 32px rgba(20,16,31,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:0.24s cubic-bezier(.2,.7,.3,1);
  --serif:'Noto Serif SC','Songti SC','SimSun',Georgia,serif;
  --sans:'Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --mono:ui-monospace,SFMono-Regular,'SF Mono',Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--sand);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.85;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--orange)}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;color:var(--ink);letter-spacing:-0.015em;line-height:1.3}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem)}
.eyebrow{font-size:12.5px;letter-spacing:.18em;color:var(--teal);font-weight:600;margin-bottom:10px;text-transform:uppercase}
.section-lead{color:var(--text-2);font-size:15px;max-width:520px;margin-top:10px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--ink);position:relative;white-space:nowrap}
.text-link::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:2px;background:var(--orange);transition:width var(--t)}
.text-link:hover::after{width:100%}

/* 顶部状态条 */
.topbar{background:var(--ink-deep);color:#CFC9DC;font-size:12.5px}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:40px;padding-top:5px;padding-bottom:5px;flex-wrap:wrap}
.topbar-note{display:inline-flex;align-items:center;gap:8px;letter-spacing:.02em}
.dot-live{width:6px;height:6px;border-radius:50%;background:var(--teal);display:inline-block;box-shadow:0 0 0 3px rgba(63,184,168,.18)}
.countdown{display:inline-flex;align-items:center;gap:10px;color:#EFEBF5}
.countdown .cd-label{color:#9C95AF}
.cd-unit{display:inline-flex;align-items:baseline;gap:3px;font-variant-numeric:tabular-nums}
.cd-unit b{font-family:var(--mono);font-size:13px;font-weight:600;color:#fff;letter-spacing:.04em}
.cd-unit i{font-style:normal;font-size:11px;color:#9C95AF}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;background:rgba(246,243,237,0);border-bottom:1px solid transparent;transition:background var(--t),border-color var(--t),box-shadow var(--t)}
.site-header.is-stuck{background:rgba(246,243,237,.97);border-bottom-color:var(--line);box-shadow:var(--sh-1)}
.nav-bar{display:flex;align-items:center;gap:32px;min-height:80px;transition:min-height var(--t)}
.site-header.is-stuck .nav-bar{min-height:64px}
.brand{display:inline-flex;flex-direction:column;line-height:1.1;flex-shrink:0}
.brand-main{font-family:var(--serif);font-size:20px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.brand-sub{font-size:10px;letter-spacing:.32em;color:var(--text-3);margin-top:5px}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-links a{font-size:14.5px;font-weight:500;color:var(--text-2);position:relative;padding:6px 0;white-space:nowrap}
.nav-links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--orange);transition:width var(--t)}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--ink);font-weight:600}
.nav-links a.is-active::after{width:100%}
.nav-aside{display:flex;align-items:center;gap:14px;flex-shrink:0}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--r-pill);font-size:12px;font-weight:600;letter-spacing:.08em;white-space:nowrap}
.badge-teal{background:rgba(63,184,168,.14);color:#22776C}
.badge-orange{background:rgba(240,98,43,.13);color:#B9431A}
.badge-grey{background:rgba(34,27,54,.06);color:var(--text-2)}
.badge-light{background:rgba(255,255,255,.14);color:#EFEBF5}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;align-items:center;justify-content:center;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative;transition:background var(--t)}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);transition:transform var(--t)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 24px;border-radius:var(--r-btn);border:1.5px solid transparent;font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--orange);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-accent{background:var(--orange);color:#fff}
.btn-accent:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:var(--orange);color:#fff;transform:translateY(-1px)}
.btn-outline-light{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-outline-light:hover{background:#fff;color:var(--ink)}
.btn:active{transform:translateY(0)}

/* Hero */
.hero{padding:52px 0 88px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(2.25rem,5.2vw,4rem);line-height:1.16;margin-bottom:18px}
.hero-sub{font-size:17px;color:var(--text-2);margin-bottom:30px;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:40px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);padding-top:24px}
.hero-stats li{padding-right:16px;border-right:1px solid var(--line)}
.hero-stats li:last-child{border-right:0;padding-right:0}
.hero-stats .num{display:block;font-family:var(--serif);font-size:28px;font-weight:700;color:var(--ink);line-height:1.2}
.hero-stats .lab{display:block;font-size:12px;color:var(--text-3);margin-top:4px;line-height:1.5}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--sh-2)}
.hero-orbit{position:absolute;inset:-18px -18px auto auto;width:62%;height:auto;color:var(--teal);opacity:.25;pointer-events:none}
.hero-orbit circle{fill:currentColor}
.hero-tag{position:absolute;left:20px;bottom:20px;background:rgba(20,16,31,.86);color:#fff;border-radius:var(--r-pill);padding:8px 16px;font-size:12.5px;letter-spacing:.08em}

/* 时间线 */
.timeline-layout{display:grid;grid-template-columns:3fr 9fr;gap:48px;align-items:start}
.timeline-aside{position:sticky;top:104px}
.timeline-aside h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:12px}
.timeline-aside p{color:var(--text-2);font-size:14.5px}
.timeline{position:relative;padding-left:34px}
.timeline::before{content:"";position:absolute;left:7px;top:10px;bottom:10px;width:1px;background:var(--line)}
.tl-item{position:relative;display:grid;grid-template-columns:64px 1fr;column-gap:20px;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{position:absolute;left:-30px;top:12px;width:9px;height:9px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 3px rgba(63,184,168,.14)}
.tl-item:hover .tl-dot{animation:pulse .9s var(--ease) 1}
@keyframes pulse{0%{box-shadow:0 0 0 3px rgba(63,184,168,.14)}70%{box-shadow:0 0 0 12px rgba(63,184,168,0)}100%{box-shadow:0 0 0 3px rgba(63,184,168,.14)}}
.tl-num{font-family:var(--serif);font-size:40px;font-weight:700;color:rgba(34,27,54,.28);line-height:1}
.tl-body h3{font-size:18px;margin-bottom:6px}
.tl-meta{font-size:12.5px;color:var(--teal);letter-spacing:.04em;margin-bottom:6px}
.tl-desc{font-size:14.5px;color:var(--text-2);margin:0}

/* 亮点 */
.highlight-layout{display:grid;grid-template-columns:5fr 7fr;gap:40px;align-items:start}
.hl-card{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);background:var(--ink)}
.hl-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hl-caption{position:absolute;left:0;right:0;bottom:0;background:rgba(20,16,31,.86);color:#fff;padding:18px 20px}
.hl-caption strong{display:block;font-family:var(--serif);font-size:16px;margin-bottom:4px}
.hl-caption span{font-size:12.5px;color:#C6C0D4}
.hl-list li{display:grid;grid-template-columns:56px 1fr;column-gap:18px;padding:20px 0;border-bottom:1px solid var(--line);transition:transform var(--t)}
.hl-list li:first-child{padding-top:0}
.hl-list li:hover{transform:translateX(4px)}
.hl-idx{font-family:var(--serif);font-size:26px;color:rgba(34,27,54,.2);line-height:1.2}
.hl-list h3{font-size:17px;margin-bottom:4px}
.hl-list p{font-size:14px;color:var(--text-2);margin:0}

/* 设备场景卡 */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.scene-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:28px;transition:border-color var(--t),box-shadow var(--t),transform var(--t)}
.scene-card:hover{border-color:rgba(34,27,54,.2);box-shadow:var(--sh-2);transform:translateY(-4px)}
.scene-card h3{font-size:17px;margin-bottom:8px}
.scene-card p{font-size:14px;color:var(--text-2);margin:0}
.scene-card .badge{margin-bottom:12px}

/* 通道对比 */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.plan{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:32px 28px;display:flex;flex-direction:column;box-shadow:var(--sh-1);transition:border-color var(--t),box-shadow var(--t),transform var(--t)}
.plan:hover{border-color:rgba(34,27,54,.2);box-shadow:var(--sh-2);transform:translateY(-4px)}
.plan.is-featured{background:var(--ink);border-color:var(--ink);color:#EDE9F3;box-shadow:var(--sh-2);transform:translateY(-8px)}
.plan.is-featured:hover{transform:translateY(-12px)}
.plan-flag{position:absolute;top:-12px;right:24px;background:var(--orange);color:#fff;font-size:11.5px;letter-spacing:.1em;padding:4px 12px;border-radius:var(--r-pill);font-weight:600}
.plan h3{font-size:19px;margin-bottom:6px}
.plan.is-featured h3{color:#fff}
.plan-way{font-size:12.5px;color:var(--text-3);letter-spacing:.06em;margin-bottom:18px}
.plan.is-featured .plan-way{color:#A9A2BA}
.plan-price{display:flex;align-items:baseline;gap:6px;padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:20px}
.plan.is-featured .plan-price{border-bottom-color:rgba(255,255,255,.16)}
.plan-price b{font-family:var(--serif);font-size:30px;font-weight:700;line-height:1}
.plan-price small{font-size:12.5px;color:var(--text-3)}
.plan.is-featured .plan-price small{color:#A9A2BA}
.plan ul{flex:1;margin-bottom:24px}
.plan li{position:relative;padding-left:22px;font-size:14.5px;color:var(--text-2);margin-bottom:10px}
.plan li::before{content:"";position:absolute;left:0;top:11px;width:9px;height:2px;background:var(--teal)}
.plan.is-featured li{color:#CFC9DC}
.plan.is-featured li::before{background:var(--orange)}
.plan .btn{width:100%}
.plan-note{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px;background:rgba(34,27,54,.04);border-radius:var(--r-card);padding:22px 28px}
.plan-note div{font-size:13px;color:var(--text-2);line-height:1.7}
.plan-note strong{display:block;color:var(--ink);font-size:13.5px;margin-bottom:2px}

/* 最新信息 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);transition:border-color var(--t),box-shadow var(--t),transform var(--t);overflow:hidden}
.news-card:hover{border-color:rgba(34,27,54,.2);box-shadow:var(--sh-2);transform:translateY(-4px)}
.news-link{display:flex;flex-direction:column;height:100%;padding:26px 24px;color:inherit}
.news-link:hover{color:inherit}
.news-title{font-size:16.5px;line-height:1.55;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-excerpt{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0 0 18px}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-3)}
.news-meta time{font-family:var(--mono);letter-spacing:.02em}
.news-meta .go{color:var(--ink);font-weight:600}
.empty-state{grid-column:1/-1;background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);padding:56px 24px;text-align:center}
.empty-state .ico{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);display:inline-flex;align-items:center;justify-content:center;color:var(--text-3);margin-bottom:14px;font-family:var(--serif);font-size:18px}
.empty-state p{font-size:14px;color:var(--text-2);margin-bottom:10px}

/* FAQ */
.faq{border-top:1px solid var(--line);max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;font-size:16px;font-weight:600;color:var(--ink);font-family:var(--serif);transition:color var(--t)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--orange)}
.faq-item summary::after{content:"+";font-family:var(--sans);font-size:20px;line-height:1;color:var(--teal);flex-shrink:0;transition:transform var(--t)}
.faq-item[open] summary::after{content:"−"}
.faq-body{padding:0 0 24px;font-size:15px;color:var(--text-2);line-height:1.85;max-width:780px}

/* CTA */
.cta-band{background:var(--ink-deep);color:#EDE9F3;padding:80px 0;position:relative;overflow:hidden}
.cta-inner{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.cta-band h2{color:#fff;font-size:clamp(1.6rem,3vw,2.3rem);margin-bottom:16px}
.cta-band p{color:#BDB6CC;font-size:15px;max-width:520px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-star{position:absolute;right:44px;bottom:36px;width:10px;height:10px;background:var(--teal);border-radius:50%;opacity:.55}

/* 页脚 */
.site-footer{background:#0E0B16;color:#A9A2BA;padding:72px 0 32px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.site-footer h4{color:#fff;font-size:14px;font-family:var(--sans);font-weight:600;letter-spacing:.06em;margin-bottom:16px}
.site-footer .brand-main{color:#fff}
.site-footer .brand-sub{color:#7D768F}
.foot-desc{font-size:13.5px;color:#8E87A0;margin-top:16px;max-width:280px;line-height:1.8}
.foot-list li{margin-bottom:10px}
.foot-list a{color:#A9A2BA;font-size:13.5px}
.foot-list a:hover{color:#fff}
.foot-note{font-size:13px;color:#8E87A0;line-height:1.9}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:#7D768F}
.footer-bottom .disclaimer{max-width:680px;line-height:1.8}

/* 响应式 */
@media (max-width:1100px){
  .hero-grid{gap:36px}
  .container{padding:0 24px}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .nav-toggle{display:inline-flex}
  .nav-aside .badge{display:none}
  .nav-links{position:fixed;top:0;left:0;right:0;bottom:0;background:var(--ink-deep);flex-direction:column;align-items:stretch;justify-content:flex-start;padding:104px 24px 40px;gap:0;transform:translateY(-102%);opacity:0;pointer-events:none;transition:transform .32s var(--ease),opacity .32s var(--ease);z-index:70;overflow-y:auto}
  .nav-links.is-open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-links a{color:#fff;font-size:18px;padding:18px 0;border-bottom:1px solid rgba(255,255,255,.12);width:100%}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--teal)}
  .hero{padding:32px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-visual{order:-1}
  .timeline-layout{grid-template-columns:1fr;gap:28px}
  .timeline-aside{position:static}
  .highlight-layout{grid-template-columns:1fr;gap:28px}
  .plans{grid-template-columns:1fr}
  .plan.is-featured{transform:none}
  .plan.is-featured:hover{transform:translateY(-4px)}
  .plan-note{grid-template-columns:1fr;gap:14px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:639px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .topbar .container{justify-content:center;gap:10px}
  .topbar-note{font-size:11.5px}
  .hero-stats{grid-template-columns:1fr 1fr;row-gap:20px}
  .hero-stats li{padding-right:12px}
  .hero-stats li:nth-child(2){border-right:0;padding-right:0}
  .hero-stats li:nth-child(3){border-right:1px solid var(--line)}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .scene-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .plans{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:16px;padding-bottom:10px;margin:0 -18px;padding-left:18px;padding-right:18px}
  .plan{min-width:80%;scroll-snap-align:start;flex-shrink:0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .tl-num{font-size:30px}
  .tl-item{grid-template-columns:48px 1fr;column-gap:14px}
  .hl-idx{font-size:20px}
  .hl-list li{grid-template-columns:44px 1fr;column-gap:14px}
  .cta-actions .btn{width:100%}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: article */
:root{
  --ink:#221B36;
  --ink-60:rgba(34,27,54,.6);
  --accent:#F0622B;
  --teal:#3FB8A8;
  --sand:#F6F3ED;
  --white:#FFFFFF;
  --dark:#14101F;
  --text:#1A1720;
  --text-2:#5B5566;
  --text-3:#8C8798;
  --line:#E3DDD3;
  --error:#C0392B;
  --r-card:18px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:8px;
  --sh-1:0 2px 8px rgba(20,16,31,.05);
  --sh-2:0 12px 32px rgba(20,16,31,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --serif:"Noto Serif SC","Songti SC","SimSun",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,SFMono-Regular,"JetBrains Mono",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:700;color:var(--ink);letter-spacing:-.015em;line-height:1.32}
button{font-family:inherit}
input,select,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(240,98,43,.22)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.read-progress{position:fixed;top:0;left:0;right:0;height:2px;background:transparent;z-index:99}
.read-progress span{display:block;height:100%;width:0;background:var(--accent);transition:width .12s linear}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,243,237,.97);
  border-bottom:1px solid var(--line);
}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;flex-direction:column;line-height:1.05}
.brand-main{font-family:var(--serif);font-size:20px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.brand-sub{font-size:10px;letter-spacing:.28em;color:var(--text-3);margin-top:4px}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{
  position:relative;display:inline-block;padding:9px 13px;border-radius:8px;
  font-size:14.5px;color:var(--text-2);
  transition:color .24s var(--ease),background .24s var(--ease);
}
.nav-links a:hover{color:var(--ink);background:rgba(34,27,54,.05)}
.nav-links a.is-active{color:var(--ink);font-weight:600}
.nav-links a.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav-aside{display:flex;align-items:center;gap:12px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;letter-spacing:.08em;line-height:1.6;white-space:nowrap;
}
.badge-teal{background:rgba(63,184,168,.14);color:#2C8175}
.badge-ink{background:rgba(34,27,54,.08);color:var(--ink)}
.badge-orange{background:rgba(240,98,43,.13);color:#B8421A}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1.5px solid transparent;cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-light{border-color:rgba(255,255,255,.6);color:#fff;background:transparent}
.btn-light:hover{background:#fff;color:var(--ink);transform:translateY(-1px)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .24s var(--ease);
}
.nav-toggle:hover{border-color:var(--ink)}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--ink);transition:background .24s var(--ease)}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
  transition:transform .24s var(--ease),top .24s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{top:0;transform:rotate(45deg)}
body.nav-open .nav-toggle span::after{top:0;transform:rotate(-45deg)}

/* ============ 面包屑 ============ */
.crumb-bar{padding:26px 0 0}
.crumbs{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--text-3);line-height:1.7;
}
.crumbs a{color:var(--text-2);transition:color .24s var(--ease)}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{color:var(--text-3);opacity:.7}
.crumbs .current{color:var(--ink);max-width:min(100%,520px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章区 ============ */
.article-section{padding:30px 0 0}
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,760px) 240px;
  gap:56px;
  justify-content:center;
  align-items:start;
}
.article-main{min-width:0}
.article-head{padding-bottom:26px;border-bottom:1px solid var(--line);margin-bottom:36px}
.chip{
  display:inline-flex;align-items:center;
  padding:5px 13px;border-radius:999px;
  font-size:12.5px;letter-spacing:.08em;
  background:rgba(63,184,168,.14);color:#2C8175;
}
.article-title{
  font-size:clamp(1.75rem,3.6vw,2.6rem);
  line-height:1.34;
  margin-top:18px;
  word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px;
  margin-top:20px;font-size:13px;color:var(--text-3);
  font-family:var(--mono);
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3);opacity:.75}
.article-meta .meta-strong{color:var(--text-2)}

/* 正文排版 */
.entry{
  max-width:760px;
  font-size:16.5px;
  line-height:1.95;
  color:var(--text);
  word-break:break-word;
}
.entry > *:first-child{margin-top:0}
.entry h2{
  font-size:clamp(1.15rem,2vw,1.4rem);
  margin:42px 0 16px;
  padding-left:16px;
  position:relative;
}
.entry h2::before{
  content:"";position:absolute;left:0;top:.32em;width:4px;height:.95em;
  background:var(--teal);border-radius:2px;
}
.entry h3{
  font-family:var(--sans);
  font-size:17px;font-weight:600;
  margin:30px 0 12px;color:var(--ink);
}
.entry p{margin:0 0 1.2em}
.entry ul{margin:0 0 1.2em}
.entry ul li{position:relative;padding-left:22px;margin-bottom:.5em}
.entry ul li::before{
  content:"";position:absolute;left:2px;top:.78em;width:6px;height:6px;
  background:var(--ink);opacity:.5;border-radius:1px;
}
.entry ol{list-style:decimal;padding-left:1.4em;margin:0 0 1.2em}
.entry ol li{margin-bottom:.5em}
.entry blockquote{
  margin:26px 0;padding:16px 22px;
  border-left:3px solid var(--teal);
  background:#EFEAE1;border-radius:0 12px 12px 0;
  color:var(--text-2);font-size:16px;
}
.entry blockquote p:last-child{margin-bottom:0}
.entry img{border-radius:var(--r-img);margin:26px 0;width:100%;height:auto}
.entry figure{margin:26px 0}
.entry figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.entry a{
  color:var(--ink);
  border-bottom:2px solid var(--accent);
  padding-bottom:1px;
  transition:background .24s var(--ease),color .24s var(--ease);
}
.entry a:hover{background:var(--accent);color:#fff}
.entry strong{color:var(--ink);font-weight:600}
.entry table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14.5px}
.entry th,.entry td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.entry th{background:#EFEAE1;color:var(--ink);font-weight:600}
.entry hr{border:none;border-top:1px solid var(--line);margin:34px 0}
.entry code{
  font-family:var(--mono);font-size:.92em;
  background:#EFEAE1;border-radius:6px;padding:2px 6px;
}

/* 空态 */
.empty-state{
  border:1px dashed var(--line);
  border-radius:var(--r-card);
  background:#fff;
  padding:64px 28px;
  text-align:center;
}
.empty-mark{
  font-family:var(--mono);font-size:26px;letter-spacing:.4em;
  color:var(--teal);opacity:.7;margin-bottom:14px;
}
.empty-title{font-family:var(--serif);font-size:20px;font-weight:700;color:var(--ink);margin-bottom:8px}
.empty-tip{font-size:14px;color:var(--text-3);margin-bottom:22px}

/* 文末 */
.article-foot{margin-top:48px;padding-top:28px;border-top:1px solid var(--line)}
.tag-group{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.tag{
  display:inline-flex;align-items:center;
  padding:6px 14px;border-radius:999px;
  font-size:12.5px;color:var(--text-2);
  background:#fff;border:1px solid var(--line);
  transition:border-color .24s var(--ease),color .24s var(--ease),background .24s var(--ease);
}
.tag:hover{border-color:var(--ink);color:var(--ink);background:#fff}
.foot-nav{display:flex;flex-wrap:wrap;align-items:center;gap:22px;font-size:14px}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--ink);font-weight:600;font-size:14.5px;
  position:relative;padding-bottom:2px;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--accent);transition:width .28s var(--ease);
}
.link-arrow:hover::after{width:100%}
.link-muted{color:var(--text-2);font-size:14px;transition:color .24s var(--ease)}
.link-muted:hover{color:var(--accent)}

/* 侧栏 */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--sh-1);
}
.side-card h3{
  font-family:var(--sans);font-size:14.5px;font-weight:600;
  letter-spacing:.04em;margin-bottom:14px;color:var(--ink);
}
.side-list li + li{border-top:1px solid var(--line)}
.side-list a{
  display:block;padding:11px 0;font-size:14px;color:var(--text-2);
  transition:color .24s var(--ease),padding-left .24s var(--ease);
}
.side-list a:hover{color:var(--accent);padding-left:5px}
.side-note{font-size:13px;line-height:1.85;color:var(--text-3);margin:0}
.side-cta{
  background:var(--ink);border-color:var(--ink);color:#fff;
}
.side-cta h3{color:#fff;margin-bottom:10px}
.side-cta p{font-size:13px;color:rgba(255,255,255,.7);margin-bottom:16px;line-height:1.8}
.side-cta .btn{width:100%}
.side-thumb{aspect-ratio:16/9;border-radius:var(--r-img);overflow:hidden;margin-bottom:12px}
.side-thumb img{width:100%;height:100%;object-fit:cover}

/* ============ 相关推荐 ============ */
.rel-section{padding:76px 0 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:20px;
  margin-bottom:32px;
}
.section-head h2{font-size:clamp(1.35rem,2.4vw,1.9rem)}
.section-kicker{
  display:block;font-family:var(--mono);font-size:12px;letter-spacing:.22em;
  color:var(--teal);margin-bottom:10px;
}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(34,27,54,.2)}
.rel-thumb{aspect-ratio:3/2;overflow:hidden;background:#EFEAE1}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:9px;flex:1}
.rel-body .chip{align-self:flex-start;font-size:11.5px;padding:4px 10px}
.rel-title{
  font-size:16px;font-weight:600;line-height:1.55;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-desc{
  font-size:13.5px;color:var(--text-2);line-height:1.8;margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-date{font-family:var(--mono);font-size:12px;color:var(--text-3);margin-top:auto}

/* ============ CTA 带 ============ */
.cta-section{padding:76px 0 0}
.cta-band{
  position:relative;overflow:hidden;
  background:var(--dark);
  border-radius:var(--r-card);
  padding:64px 56px;
  display:grid;grid-template-columns:1.4fr .8fr;gap:40px;align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:16px}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;line-height:1.9;margin:0;max-width:34em}
.cta-actions{display:flex;flex-direction:column;gap:12px}
.cta-actions .btn{width:100%}
.cta-star{
  position:absolute;right:34px;bottom:30px;width:8px;height:8px;
  background:var(--teal);border-radius:50%;opacity:.85;
}
.cta-star::before{
  content:"";position:absolute;left:-16px;top:-16px;width:40px;height:40px;
  border:1px solid rgba(63,184,168,.35);border-radius:50%;
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:92px;padding:64px 0 28px;
  background:var(--sand);border-top:1px solid var(--line);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.foot-desc{font-size:13.5px;color:var(--text-2);line-height:1.85;margin:16px 0 0;max-width:20em}
.site-footer h4{
  font-family:var(--sans);font-size:13px;font-weight:600;
  letter-spacing:.14em;color:var(--ink);margin:0 0 16px;
}
.foot-list li{margin-bottom:9px}
.foot-list a{font-size:14px;color:var(--text-2);transition:color .24s var(--ease)}
.foot-list a:hover{color:var(--accent)}
.foot-note{font-size:13px;color:var(--text-3);line-height:1.85;margin:0}
.footer-bottom{
  margin-top:46px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  font-size:12.5px;color:var(--text-3);
}
.disclaimer{max-width:44em;line-height:1.8}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .nav-links a{padding:9px 10px;font-size:14px}
}
@media (max-width:1023px){
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:fixed;left:0;right:0;top:72px;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--dark);
    padding:14px 24px 28px;
    max-height:calc(100vh - 72px);overflow-y:auto;
    transform:translateY(-12px);opacity:0;pointer-events:none;
    transition:transform .28s var(--ease),opacity .28s var(--ease);
    box-shadow:var(--sh-2);
    z-index:70;
  }
  .nav-links.is-open{transform:none;opacity:1;pointer-events:auto}
  .nav-links a{
    color:#EDE9E2;font-size:18px;padding:15px 2px;border-radius:0;
    border-bottom:1px solid rgba(255,255,255,.1);
  }
  .nav-links a:hover{background:transparent;color:#fff}
  .nav-links a.is-active{color:#fff}
  .nav-links a.is-active::after{left:2px;right:auto;width:22px;bottom:11px}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:0}
  .article-side{display:none}
  .container{padding:0 24px}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band{grid-template-columns:1fr;padding:48px 32px;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .nav-bar{height:64px;gap:14px}
  .nav-links{top:64px;max-height:calc(100vh - 64px)}
  .badge-teal{display:none}
  .article-title{font-size:clamp(1.6rem,6vw,2.1rem)}
  .entry{font-size:16px}
  .rel-grid{grid-template-columns:1fr}
  .rel-thumb{aspect-ratio:16/9}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .crumbs .current{white-space:normal;max-width:100%}
  .article-meta{font-size:12.5px;gap:8px}
  .cta-band{padding:40px 24px;border-radius:14px}
  .site-footer{margin-top:72px;padding-top:48px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:519px){
  .container{padding:0 18px}
  .footer-grid{grid-template-columns:1fr}
  .btn{width:100%}
  .btn-sm{width:auto}
  .cta-actions .btn{width:100%}
  .article-head{padding-bottom:20px;margin-bottom:28px}
  .empty-state{padding:44px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* roulang page: category1 */
:root{
  --ink:#221B36;
  --ink-deep:#14101F;
  --accent:#F0622B;
  --accent-deep:#D94F1C;
  --teal:#3FB8A8;
  --teal-ink:#25786C;
  --sand:#F6F3ED;
  --card:#FFFFFF;
  --text:#1A1720;
  --text-2:#5B5566;
  --text-3:#8C8798;
  --line:#E3DDD3;
  --err:#C0392B;
  --r-card:18px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:8px;
  --sh-1:0 2px 8px rgba(20,16,31,.05);
  --sh-2:0 12px 32px rgba(20,16,31,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:0.24s cubic-bezier(.2,.7,.3,1);
  --font-serif:"Noto Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--ink);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--accent)}
img{max-width:100%;display:block;height:auto}
button{font-family:inherit}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{
  outline:2px solid var(--accent5, #F0622B);
  outline:2px solid var(--accent);
  outline-offset:2px;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(246,243,237,.92);
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t),box-shadow var(--t);
}
.site-header.is-scrolled{
  background:rgba(246,243,237,.985);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-1);
}
.nav-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:80px;
  transition:height var(--t);
}
.site-header.is-scrolled .nav-bar{height:64px}
.brand{display:inline-flex;flex-direction:column;line-height:1.1;flex:0 0 auto}
.brand-main{
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--ink);
}
.brand-sub{
  font-size:10px;
  letter-spacing:.26em;
  color:var(--text-3);
  margin-top:5px;
}
.nav-links{display:flex;align-items:center;gap:2px;flex-wrap:nowrap}
.nav-links a{
  display:inline-block;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--text-2);
  border-radius:999px;
  white-space:nowrap;
  transition:color var(--t),background var(--t);
}
.nav-links a:hover{color:var(--ink);background:rgba(34,27,54,.05)}
.nav-links a.is-active{
  color:var(--ink);
  font-weight:600;
  background:rgba(34,27,54,.07);
}
.nav-aside{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.08em;
  line-height:1.4;
  white-space:nowrap;
}
.badge-teal{background:rgba(63,184,168,.16);color:var(--teal-ink)}
.badge-plain{background:rgba(34,27,54,.07);color:var(--ink)}
.badge-accent{background:rgba(240,98,43,.14);color:var(--accent-deep)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:10px;
  background:#fff;
  cursor:pointer;
  position:relative;
  padding:0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;
  left:50%;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transform:translateX(-50%);
  transition:transform var(--t),opacity var(--t);
  content:"";
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px;left:0;transform:none}
.nav-toggle span::after{top:6px;left:0;transform:none}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-btn);
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-1)}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-light:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-sm{min-height:38px;padding:0 16px;font-size:13.5px;border-radius:9px}
.btn:active{transform:translateY(0)}
.btn[disabled],.btn.is-disabled{opacity:.55;pointer-events:none;cursor:not-allowed}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  position:relative;
  padding-bottom:2px;
}
.link-more::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--accent);
  transition:width .28s var(--ease);
}
.link-more:hover::after{width:100%}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;
  padding:48px 0 64px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(rgba(246,243,237,.86),rgba(246,243,237,.95)),url('/assets/images/backpic/back-1.png');
  background-position:center;
  background-size:cover;
  background-repeat:no-repeat;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:28px;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb span[aria-current]{color:var(--text-3)}
.cat-hero h1{
  font-family:var(--font-serif);
  font-size:clamp(2rem,4.4vw,3.1rem);
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1.28;
  color:var(--ink);
  margin:18px 0 0;
  max-width:18em;
}
.cat-hero .lead{
  margin-top:16px;
  font-size:16.5px;
  color:var(--text-2);
  max-width:36em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  margin-top:44px;
  border-top:1px solid var(--line);
  padding-top:26px;
  max-width:760px;
}
.stat{
  padding:0 22px;
  border-left:1px solid var(--line);
}
.stat:first-child{padding-left:0;border-left:0}
.stat-num{
  font-family:var(--font-serif);
  font-size:28px;
  font-weight:700;
  color:var(--ink);
  line-height:1.2;
  font-variant-numeric:tabular-nums;
}
.stat-label{font-size:12px;color:var(--text-3);letter-spacing:.06em;margin-top:4px}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--sand{background:var(--sand)}
.section--white{background:#fff}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:44px;
}
.sec-title{
  font-family:var(--font-serif);
  font-size:clamp(1.5rem,2.6vw,2.1rem);
  font-weight:700;
  letter-spacing:-.015em;
  color:var(--ink);
  line-height:1.35;
}
.sec-desc{margin-top:12px;font-size:15px;color:var(--text-2);max-width:44em}
.kicker{
  display:inline-block;
  font-size:12.5px;
  letter-spacing:.14em;
  color:var(--teal-ink);
  margin-bottom:12px;
}

/* ---------- 卡片 ---------- */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:28px;
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.card:hover{
  border-color:rgba(34,27,54,.2);
  box-shadow:var(--sh-2);
  transform:translateY(-4px);
}
.card h3{
  font-size:18px;
  font-weight:600;
  color:var(--ink);
  line-height:1.5;
  margin-bottom:10px;
}
.card p{font-size:14.5px;color:var(--text-2);line-height:1.8}
.card-tag{
  display:inline-flex;
  align-items:center;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--text-3);
  margin-bottom:14px;
}
.card-index{
  font-family:var(--font-num);
  font-size:34px;
  font-weight:600;
  color:rgba(34,27,54,.14);
  line-height:1;
  margin-bottom:16px;
  letter-spacing:-.02em;
}

/* 通道网格：非对称 */
.channel-grid{
  display:grid;
  grid-template-columns:1.35fr 1fr;
  gap:24px;
}
.channel-main{grid-row:span 2;display:flex;flex-direction:column;justify-content:space-between}
.channel-main .channel-figure{
  margin-top:24px;
  border-radius:var(--r-img);
  overflow:hidden;
}
.channel-main .channel-figure img{
  width:100%;
  height:190px;
  object-fit:cover;
}
.channel-list{margin-top:18px;border-top:1px solid var(--line)}
.channel-list li{
  display:flex;
  gap:12px;
  font-size:14px;
  color:var(--text-2);
  padding:10px 0;
  border-bottom:1px dashed var(--line);
}
.channel-list li::before{
  content:"";
  flex:0 0 auto;
  width:6px;height:6px;
  margin-top:10px;
  border-radius:2px;
  background:var(--teal);
}

/* 适用情形 */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.scene-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 26px 24px;
  transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.scene-card:hover{
  border-color:rgba(34,27,54,.2);
  box-shadow:var(--sh-2);
  transform:translateY(-4px);
}
.scene-card h3{font-size:17.5px;font-weight:600;color:var(--ink);margin-bottom:8px;line-height:1.5}
.scene-card p{font-size:14.5px;color:var(--text-2)}

/* 步骤 */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:26px;
  margin-top:8px;
}
.step{
  position:relative;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.step::before{
  content:"";
  position:absolute;
  top:-5px;left:0;
  width:9px;height:9px;
  border-radius:50%;
  background:var(--teal);
  box-shadow:0 0 0 4px rgba(63,184,168,.16);
}
.step-num{
  font-family:var(--font-num);
  font-size:13px;
  letter-spacing:.12em;
  color:var(--text-3);
  display:block;
  margin-bottom:10px;
}
.step h3{font-size:16.5px;font-weight:600;color:var(--ink);margin-bottom:8px;line-height:1.5}
.step p{font-size:14px;color:var(--text-2);line-height:1.8}

/* 图文分栏 */
.split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.split-figure img{
  width:100%;
  height:340px;
  object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid var(--line);
}
.check-list{margin-top:22px}
.check-list li{
  display:flex;
  gap:14px;
  padding:14px 0;
  border-bottom:1px solid var(--line);
  font-size:15px;
  color:var(--text);
}
.check-list li:last-child{border-bottom:0}
.check-list .tick{
  flex:0 0 auto;
  width:20px;height:20px;
  margin-top:4px;
  border-radius:6px;
  background:rgba(63,184,168,.16);
  color:var(--teal-ink);
  font-size:12px;
  font-weight:700;
  display:inline-flex;
  align-items:center;
  justify-content:center;
}
.check-list b{font-weight:600;color:var(--ink)}

/* FAQ */
.faq{border-top:1px solid var(--line);max-width:900px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:20px 0;
  cursor:pointer;
  list-style:none;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  transition:color var(--t);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--accent)}
.faq summary::after{
  content:"+";
  flex:0 0 auto;
  width:24px;height:24px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  border-radius:50%;
  font-size:14px;
  font-weight:500;
  color:var(--text-2);
  transition:background var(--t),color var(--t),border-color var(--t);
}
.faq details[open] summary::after{
  content:"−";
  background:var(--ink);
  border-color:var(--ink);
  color:#fff;
}
.faq .faq-body{
  padding:0 0 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
  max-width:60em;
}

/* 提示条 */
.notice{
  margin-top:36px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:22px 26px;
  font-size:14px;
  color:var(--text-2);
}
.notice strong{color:var(--ink)}

/* CTA 深色带 */
.cta-band{
  background:var(--ink-deep);
  color:#fff;
  padding:80px 0;
  position:relative;
  overflow:hidden;
}
.cta-band .cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:48px;
}
.cta-band h2{
  font-family:var(--font-serif);
  font-size:clamp(1.5rem,2.6vw,2.1rem);
  font-weight:700;
  letter-spacing:-.015em;
  line-height:1.4;
  color:#fff;
}
.cta-band p{
  margin-top:14px;
  font-size:15px;
  color:rgba(255,255,255,.7);
  max-width:36em;
}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;flex:0 0 auto}
.cta-dot{
  position:absolute;
  right:40px;bottom:28px;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--teal);
  opacity:.8;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-deep);
  color:rgba(255,255,255,.72);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.4fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.site-footer .brand-main{color:#fff}
.site-footer .brand-sub{color:rgba(255,255,255,.5)}
.foot-desc{
  margin-top:18px;
  font-size:14px;
  color:rgba(255,255,255,.62);
  max-width:22em;
}
.site-footer h4{
  font-size:13px;
  letter-spacing:.14em;
  color:#fff;
  font-weight:600;
  margin-bottom:18px;
}
.foot-list li{margin-bottom:10px}
.foot-list a{
  font-size:14px;
  color:rgba(255,255,255,.68);
}
.foot-list a:hover{color:var(--accent)}
.foot-note{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.55)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:16px;
  padding-top:26px;
  font-size:12.5px;
  color:rgba(255,255,255,.45);
}
.footer-bottom .disclaimer{max-width:56em;line-height:1.8}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .container{padding-left:24px;padding-right:24px}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .nav-toggle{display:block}
  .nav-links{
    position:fixed;
    top:64px;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    background:var(--ink-deep);
    padding:12px 20px 92px;
    max-height:calc(100vh - 64px);
    overflow-y:auto;
    transform:translateY(-8px);
    opacity:0;
    visibility:hidden;
    transition:opacity var(--t),transform var(--t),visibility var(--t);
    z-index:70;
  }
  .nav-links.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-links a{
    color:rgba(255,255,255,.82);
    font-size:18px;
    padding:16px 4px;
    border-radius:0;
    border-bottom:1px solid rgba(255,255,255,.1);
  }
  .nav-links a:hover,.nav-links a.is-active{
    color:#fff;
    background:transparent;
    font-weight:600;
  }
  .nav-links a.is-active{border-bottom-color:var(--teal)}
  .nav-bar{height:64px}
  .site-header.is-scrolled .nav-bar{height:64px}
  .nav-aside .badge{display:none}
  .channel-grid{grid-template-columns:1fr}
  .channel-main{grid-row:auto}
  .steps{grid-template-columns:repeat(2,1fr);gap:24px}
  .split{grid-template-columns:1fr;gap:32px}
  .split-figure img{height:280px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band .cta-inner{flex-direction:column;align-items:flex-start;gap:28px}
}
@media screen and (max-width:767px){
  .sec-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .grid-2{grid-template-columns:1fr}
  .stat-row{grid-template-columns:repeat(2,1fr);row-gap:22px}
  .stat{padding:0 16px}
  .stat:nth-child(3){padding-left:0;border-left:0}
  .channel-main .channel-figure img{height:170px}
}
@media screen and (max-width:559px){
  .container{padding-left:18px;padding-right:18px}
  .section{padding:56px 0}
  .cat-hero{padding:32px 0 48px}
  .cat-hero h1{font-size:clamp(1.75rem,8vw,2.2rem)}
  .hero-actions .btn{width:100%}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-band{padding:56px 0}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .split-figure img{height:220px}
  .card,.scene-card{padding:22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category3 */
:root{
  --ink:#221B36;
  --ink-soft:#3A3153;
  --accent:#F0622B;
  --teal:#3FB8A8;
  --sand:#F6F3ED;
  --white:#FFFFFF;
  --dark:#14101F;
  --text:#1A1720;
  --text-2:#5B5566;
  --text-3:#8C8798;
  --line:#E3DDD3;
  --error:#C0392B;
  --r-card:18px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --r-input:8px;
  --sh-low:0 2px 8px rgba(20,16,31,.05);
  --sh-high:0 12px 32px rgba(20,16,31,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:.24s var(--ease);
  --sp-section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--accent);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.3;letter-spacing:-.015em;}
h1,h2{font-family:"Noto Serif SC","Songti SC",serif;font-weight:700;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
::selection{background:rgba(240,98,43,.18);color:var(--ink);}
.container{
  width:100%;max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.section{padding:var(--sp-section) 0;}
.section--tight{padding:64px 0;}
.section--white{background:var(--white);}
.section-head{margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-block;font-size:12.5px;letter-spacing:.12em;
  color:var(--teal);font-weight:700;margin-bottom:12px;
}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:12px;}
.section-head p{color:var(--text-2);font-size:15px;max-width:640px;margin:0;}
.section-head--row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.textlink{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:500;color:var(--ink);
  border-bottom:2px solid var(--accent);
  padding-bottom:2px;
}
.textlink:hover{color:var(--accent);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 24px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:500;line-height:1;
  border:1.5px solid transparent;
  background:var(--ink);color:#fff;
  transition:background var(--t),color var(--t),transform var(--t),border-color var(--t),box-shadow var(--t);
}
.btn:hover{background:var(--accent);color:#fff;transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-accent{background:var(--accent);color:#fff;}
.btn-accent:hover{background:var(--ink);color:#fff;}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-outline:hover{background:var(--ink);color:#fff;}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn-ghost-light:hover{background:#fff;color:var(--ink);border-color:#fff;}
.btn-sm{min-height:38px;padding:9px 18px;font-size:13.5px;}
.btn-block{width:100%;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.08em;font-weight:500;
  background:rgba(63,184,168,.12);color:#2C7F74;
  white-space:nowrap;
}
.badge::before{
  content:"";width:6px;height:6px;border-radius:50%;
  background:var(--teal);display:inline-block;
}
.badge-accent{background:rgba(240,98,43,.12);color:#B8451B;}
.badge-accent::before{background:var(--accent);}
.badge-ink{background:rgba(34,27,54,.08);color:var(--ink);}
.badge-ink::before{background:var(--ink);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,243,237,.94);
  border-bottom:1px solid transparent;
  transition:background var(--t),border-color var(--t),box-shadow var(--t);
}
.site-header.is-stuck{
  background:rgba(246,243,237,.98);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-low);
}
.nav-bar{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:80px;
  transition:min-height var(--t);
}
.site-header.is-stuck .nav-bar{min-height:64px;}
.brand{display:flex;flex-direction:column;line-height:1.1;}
.brand-main{
  font-family:"Noto Serif SC",serif;font-size:20px;font-weight:700;
  color:var(--ink);letter-spacing:.02em;
}
.brand-sub{
  font-size:10px;letter-spacing:.26em;color:var(--text-3);margin-top:4px;
}
.brand:hover .brand-main{color:var(--accent);}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-links a{
  position:relative;
  display:inline-block;padding:10px 14px;border-radius:var(--r-btn);
  font-size:14.5px;color:var(--text-2);transition:color var(--t),background var(--t);
}
.nav-links a:hover{color:var(--ink);background:rgba(34,27,54,.05);}
.nav-links a.is-active{color:var(--ink);font-weight:700;background:rgba(34,27,54,.06);}
.nav-links a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav-aside{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--white);padding:0;align-items:center;justify-content:center;
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:var(--ink);position:relative;border-radius:2px;
}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform var(--t);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* ---------- 页面横幅 ---------- */
.page-hero{
  position:relative;
  padding:72px 0 64px;
  background:var(--ink);
  color:#fff;
  overflow:hidden;
  isolation:isolate;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.2;z-index:-2;
}
.page-hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,rgba(20,16,31,.92) 0%,rgba(20,16,31,.72) 55%,rgba(20,16,31,.55) 100%);
}
.page-hero .crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.62);margin-bottom:22px;
}
.page-hero .crumb a{color:rgba(255,255,255,.78);}
.page-hero .crumb a:hover{color:#fff;}
.page-hero .crumb span{opacity:.5;}
.page-hero h1{
  color:#fff;font-size:clamp(1.85rem,4vw,2.9rem);
  margin-bottom:16px;max-width:760px;
}
.page-hero .lead{
  color:rgba(255,255,255,.78);font-size:16px;max-width:600px;margin-bottom:28px;
}
.page-hero .hero-meta{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
}
.page-hero .badge{background:rgba(63,184,168,.18);color:#9FE3D9;}
.page-hero .badge::before{background:#9FE3D9;}
.hero-stats{
  display:flex;gap:0;flex-wrap:wrap;margin-top:36px;
  border-top:1px solid rgba(255,255,255,.14);padding-top:26px;
}
.hero-stats div{
  padding-right:32px;margin-right:32px;
  border-right:1px solid rgba(255,255,255,.14);
}
.hero-stats div:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-stats strong{
  display:block;font-family:"Noto Serif SC",serif;font-size:28px;color:#fff;line-height:1.2;
}
.hero-stats small{font-size:12.5px;color:rgba(255,255,255,.6);letter-spacing:.06em;}

/* ---------- 安全要点卡 ---------- */
.card-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:24px;
}
.info-card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:30px 28px;
  box-shadow:var(--sh-low);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.info-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-high);
  border-color:rgba(34,27,54,.2);
}
.info-card .num{
  font-family:"Noto Serif SC",serif;font-size:13px;letter-spacing:.14em;
  color:var(--teal);font-weight:700;display:block;margin-bottom:14px;
}
.info-card h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.info-card p{font-size:14.5px;color:var(--text-2);margin:0;line-height:1.85;}
.info-card ul{margin-top:14px;}
.info-card ul li{
  position:relative;padding-left:16px;font-size:14px;color:var(--text-2);line-height:1.95;
}
.info-card ul li::before{
  content:"";position:absolute;left:0;top:11px;
  width:6px;height:6px;border-radius:1px;background:var(--accent);
}

/* ---------- 步骤 ---------- */
.steps{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  counter-reset:step;
  position:relative;
}
.steps::before{
  content:"";position:absolute;left:0;right:0;top:23px;height:1px;
  background:var(--line);
}
.step{position:relative;padding-top:0;}
.step .dot{
  width:12px;height:12px;border-radius:50%;background:var(--teal);
  border:3px solid var(--sand);box-sizing:content-box;
  position:relative;z-index:2;margin-bottom:18px;
  box-shadow:0 0 0 1px var(--line);
}
.step .step-no{
  font-family:"Noto Serif SC",serif;font-size:13px;letter-spacing:.14em;color:var(--text-3);
}
.step h3{font-size:17px;font-weight:600;margin:8px 0 8px;}
.step p{font-size:14px;color:var(--text-2);margin:0;}

/* ---------- 交替图文 ---------- */
.split-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.split-row + .split-row{margin-top:80px;}
.split-row.reverse .split-media{order:2;}
.split-media img{
  width:100%;aspect-ratio:5/4;object-fit:cover;
  border-radius:var(--r-img);box-shadow:var(--sh-low);
}
.split-body .kicker{
  font-size:12.5px;letter-spacing:.14em;color:var(--accent);font-weight:700;
  display:block;margin-bottom:12px;
}
.split-body h2{font-size:clamp(1.4rem,2.3vw,1.85rem);margin-bottom:14px;}
.split-body p{font-size:15px;color:var(--text-2);margin-bottom:14px;}
.tick-list{margin:0 0 20px;}
.tick-list li{
  position:relative;padding-left:24px;font-size:14.5px;color:var(--text-2);line-height:2;
}
.tick-list li::before{
  content:"";position:absolute;left:0;top:12px;
  width:10px;height:10px;border-left:2px solid var(--teal);border-bottom:2px solid var(--teal);
  transform:rotate(-45deg);border-radius:1px;
}

/* ---------- 提示条 ---------- */
.notice{
  background:var(--white);
  border:1px solid var(--line);
  border-left:3px solid var(--teal);
  border-radius:var(--r-card);
  padding:26px 30px;
  box-shadow:var(--sh-low);
}
.notice h3{font-size:17px;margin-bottom:10px;}
.notice p{font-size:14.5px;color:var(--text-2);margin:0;}
.notice p + p{margin-top:10px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  border-bottom:1px solid var(--line);
}
.faq-item summary{
  list-style:none;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;
  font-size:16px;font-weight:500;color:var(--ink);
  cursor:pointer;
  transition:color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--accent);}
.faq-item summary .faq-icon{
  position:relative;flex:0 0 18px;width:18px;height:18px;
}
.faq-item summary .faq-icon::before,
.faq-item summary .faq-icon::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;
  transition:transform var(--t),background var(--t);
}
.faq-item summary .faq-icon::before{left:0;top:8px;width:18px;height:1.5px;}
.faq-item summary .faq-icon::after{left:8px;top:0;width:1.5px;height:18px;}
.faq-item[open] summary .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-item[open] summary{color:var(--accent);}
.faq-item[open] summary .faq-icon::before{background:var(--accent);}
.faq-body{
  padding:0 4px 24px;font-size:15px;line-height:1.85;color:var(--text-2);
}
.faq-body p{margin:0 0 .8em;}
.faq-body p:last-child{margin-bottom:0;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--dark);
  color:#fff;
  padding:80px 0;
  position:relative;
  overflow:hidden;
}
.cta-band h2{color:#fff;font-size:clamp(1.5rem,2.8vw,2.2rem);margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;max-width:520px;margin:0;}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
  position:relative;z-index:2;
}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band::after{
  content:"";position:absolute;right:8%;bottom:-60px;
  width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(240,98,43,.22),transparent 68%);
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--sand);
  border-top:1px solid var(--line);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;
}
.foot-desc{
  font-size:13.5px;color:var(--text-2);margin-top:16px;max-width:260px;line-height:1.9;
}
.site-footer h4{
  font-size:13px;letter-spacing:.1em;color:var(--ink);margin-bottom:16px;font-weight:700;
}
.foot-list li{margin-bottom:10px;}
.foot-list a{font-size:14px;color:var(--text-2);}
.foot-list a:hover{color:var(--accent);}
.foot-note{font-size:13px;color:var(--text-3);line-height:1.95;margin:0;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);
}
.disclaimer{max-width:620px;line-height:1.9;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.is-in{
  opacity:1;transform:none;
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  :root{--sp-section:72px;}
  .container{padding:0 24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .steps{grid-template-columns:repeat(2,1fr);row-gap:36px;}
  .steps::before{display:none;}
  .split-row{gap:36px;}
  .nav-links{
    position:fixed;left:0;right:0;top:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--dark);
    padding:88px 24px 32px;
    transform:translateY(-102%);
    transition:transform .34s var(--ease);
    z-index:55;
    max-height:100vh;overflow-y:auto;
  }
  .nav-links.is-open{transform:translateY(0);}
  .nav-links a{
    color:rgba(255,255,255,.82);font-size:18px;padding:16px 4px;
    border-bottom:1px solid rgba(255,255,255,.1);border-radius:0;
  }
  .nav-links a:hover{background:transparent;color:#fff;}
  .nav-links a.is-active{background:transparent;color:#fff;}
  .nav-links a.is-active::after{left:4px;right:auto;width:24px;bottom:10px;}
  .nav-toggle{display:inline-flex;position:relative;z-index:58;}
  .nav-aside .badge{display:none;}
}
@media (max-width:767px){
  :root{--sp-section:56px;}
  .section--tight{padding:48px 0;}
  .card-grid{grid-template-columns:1fr;}
}
@media (max-width:639px){
  .container{padding:0 18px;}
  .nav-bar{min-height:64px;gap:10px;}
  .brand-sub{letter-spacing:.2em;}
  .page-hero{padding:52px 0 46px;}
  .hero-stats{gap:20px;padding-top:22px;}
  .hero-stats div{
    padding-right:20px;margin-right:0;border-right:0;
    flex:0 0 calc(50% - 10px);
  }
  .hero-stats strong{font-size:24px;}
  .steps{grid-template-columns:1fr;}
  .split-row{grid-template-columns:1fr;gap:24px;}
  .split-row.reverse .split-media{order:0;}
  .split-row + .split-row{margin-top:52px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:12px;}
  .btn{width:100%;}
  .nav-aside .btn{width:auto;}
}

/* roulang page: category2 */
:root{
  --ink:#221B36;
  --accent:#F0622B;
  --teal:#3FB8A8;
  --sand:#F6F3ED;
  --white:#FFFFFF;
  --dark:#14101F;
  --t1:#1A1720;
  --t2:#5B5566;
  --t3:#8C8798;
  --line:#E3DDD3;
  --err:#C0392B;
  --r-card:18px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --r-input:8px;
  --sh-low:0 2px 8px rgba(20,16,31,.05);
  --sh-high:0 12px 32px rgba(20,16,31,.10);
  --ease:.24s cubic-bezier(.2,.7,.3,1);
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",serif;
  --font-mono:Inter,ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--t1);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--ease)}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}
.section{padding:96px 0}
.sec-head{max-width:720px;margin-bottom:44px}
.sec-eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--accent);
  font-weight:600;
  margin-bottom:14px;
}
.sec-head h2{
  font-family:var(--font-serif);
  font-size:clamp(1.5rem,2.6vw,2.1rem);
  font-weight:700;
  letter-spacing:-.015em;
  line-height:1.35;
  color:var(--ink);
}
.sec-head p{margin-top:14px;color:var(--t2);font-size:15.5px;line-height:1.9}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(246,243,237,.96);
  border-bottom:1px solid transparent;
  transition:background var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);background:#F6F3ED}
.nav-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:20px 0;
  transition:padding var(--ease);
}
.site-header.is-scrolled .nav-bar{padding:12px 0}
.brand{
  display:flex;
  flex-direction:column;
  line-height:1.1;
  flex-shrink:0;
}
.brand-main{
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--ink);
}
.brand-sub{
  font-size:10px;
  letter-spacing:.3em;
  color:var(--t3);
  margin-top:5px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  flex-wrap:wrap;
}
.nav-links a{
  display:inline-block;
  padding:8px 13px;
  font-size:15px;
  color:var(--t2);
  border-radius:var(--r-pill);
  transition:background var(--ease),color var(--ease);
  white-space:nowrap;
}
.nav-links a:hover{color:var(--ink);background:rgba(34,27,54,.06)}
.nav-links a.is-active{color:var(--ink);font-weight:700;background:rgba(34,27,54,.08)}
.nav-aside{display:flex;align-items:center;gap:12px;flex-shrink:0}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 13px;
  font-size:12px;
  letter-spacing:.08em;
  border-radius:var(--r-pill);
  white-space:nowrap;
}
.badge-teal{background:rgba(63,184,168,.16);color:#2A8C7F;border:1px solid rgba(63,184,168,.3)}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.8}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 22px;
  border-radius:var(--r-btn);
  border:1.5px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-sm{min-height:40px;padding:9px 18px;font-size:14px}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--ink);color:#fff;box-shadow:var(--sh-low)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);color:#fff}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{background:#fff;color:var(--ink);border-color:#fff}
.btn-light:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-outline-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  background:transparent;
  border:1.5px solid var(--line);
  border-radius:var(--r-btn);
  cursor:pointer;
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transition:transform var(--ease),opacity var(--ease);
}
.nav-toggle span::before{position:absolute;top:14px;left:12px}
.nav-toggle span::after{position:absolute;top:28px;left:12px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-7px) rotate(-45deg)}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  color:#fff;
  padding:84px 0 76px;
  background-image:linear-gradient(120deg,rgba(20,16,31,.94) 0%,rgba(34,27,54,.9) 55%,rgba(34,27,54,.8) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.hero-inner{max-width:840px}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  font-size:12px;
  letter-spacing:.14em;
  border-radius:var(--r-pill);
  background:rgba(63,184,168,.16);
  color:#9EE3D8;
  border:1px solid rgba(63,184,168,.35);
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal)}
.page-hero h1{
  font-family:var(--font-serif);
  font-size:clamp(2rem,4.6vw,3.15rem);
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1.24;
  margin:24px 0 18px;
}
.hero-sub{
  font-size:16.5px;
  line-height:1.9;
  color:rgba(255,255,255,.78);
  max-width:640px;
}
.stat-row{
  display:flex;
  flex-wrap:wrap;
  margin-top:44px;
  padding-top:28px;
  border-top:1px solid rgba(255,255,255,.14);
}
.stat{
  flex:1 1 180px;
  padding:0 24px;
  border-left:1px solid rgba(255,255,255,.14);
}
.stat:first-child{padding-left:0;border-left:0}
.stat b{
  display:block;
  font-family:var(--font-serif);
  font-size:28px;
  line-height:1.25;
  font-weight:700;
  color:#fff;
}
.stat span{
  display:block;
  margin-top:4px;
  font-size:12.5px;
  letter-spacing:.04em;
  color:rgba(255,255,255,.62);
}

/* ---------- feature rows ---------- */
.feature-row{
  align-items:center;
  margin-bottom:80px;
}
.feature-row:last-child{margin-bottom:0}
.feature-media{
  border-radius:var(--r-img);
  overflow:hidden;
  margin-bottom:28px;
}
.feature-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  border-radius:var(--r-img);
  box-shadow:var(--sh-low);
}
.feature-media.is-a img{aspect-ratio:5/6}
.feature-media.is-b img{aspect-ratio:1/1}
.feature-body .num{
  font-family:var(--font-mono);
  font-size:13.5px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--accent);
}
.feature-body h2{
  font-family:var(--font-serif);
  font-size:clamp(1.45rem,2.4vw,1.95rem);
  font-weight:700;
  line-height:1.34;
  letter-spacing:-.015em;
  color:var(--ink);
  margin:14px 0 18px;
}
.feature-body p{
  color:var(--t2);
  font-size:15.5px;
  line-height:1.95;
  margin-bottom:14px;
}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:6px;
  padding-bottom:3px;
  font-weight:600;
  font-size:15px;
  color:var(--ink);
  border-bottom:2px solid var(--accent);
  transition:color var(--ease),border-color var(--ease);
}
.link-more::after{content:"→";transition:transform var(--ease)}
.link-more:hover{color:var(--accent)}
.link-more:hover::after{transform:translateX(4px)}

/* ---------- mini cards ---------- */
.mini-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.mini-card{
  height:100%;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:30px 26px;
  margin-bottom:24px;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.mini-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-high);
  border-color:rgba(34,27,54,.2);
}
.mini-card .mini-idx{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;height:36px;
  border-radius:10px;
  background:rgba(63,184,168,.14);
  color:#2A8C7F;
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:600;
  margin-bottom:16px;
}
.mini-card h3{
  font-size:18px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:10px;
}
.mini-card p{color:var(--t2);font-size:14.5px;line-height:1.9}

/* ---------- checklist ---------- */
.check-list{list-style:none;margin-top:8px}
.check-list li{
  display:flex;
  gap:20px;
  padding:24px 0;
  border-bottom:1px solid var(--line);
}
.check-list li:first-child{padding-top:0}
.check-list li:last-child{border-bottom:0;padding-bottom:0}
.check-no{
  flex-shrink:0;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.12em;
  color:var(--t3);
  padding-top:5px;
}
.check-body h3{
  font-size:17px;
  font-weight:700;
  color:var(--ink);
  margin-bottom:8px;
}
.check-body p{color:var(--t2);font-size:14.5px;line-height:1.9}

/* ---------- faq ---------- */
.faq-section{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.faq-list{margin-top:12px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  position:relative;
  list-style:none;
  cursor:pointer;
  padding:22px 48px 22px 0;
  font-size:16.5px;
  font-weight:600;
  color:var(--ink);
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";
  position:absolute;
  right:8px;
  top:50%;
  transform:translateY(-50%);
  font-size:22px;
  font-weight:300;
  line-height:1;
  color:var(--t3);
  transition:color var(--ease),transform var(--ease);
}
.faq-item[open] summary::after{content:"−";color:var(--accent)}
.faq-item summary:hover{color:var(--accent)}
.faq-answer{
  padding:0 48px 26px 0;
  color:var(--t2);
  font-size:15px;
  line-height:1.95;
}

/* ---------- cta ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--dark);
  color:#fff;
  padding:84px 0;
}
.cta-inner{
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:48px;
  align-items:center;
}
.cta-band h2{
  font-family:var(--font-serif);
  font-size:clamp(1.6rem,3vw,2.15rem);
  font-weight:700;
  line-height:1.36;
  margin-bottom:16px;
}
.cta-band p{color:rgba(255,255,255,.72);font-size:15.5px;line-height:1.9;max-width:540px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-dot{
  position:absolute;
  right:6%;
  bottom:22px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--accent);
  opacity:.7;
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);
  color:rgba(255,255,255,.72);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:44px;
}
.site-footer .brand-main{color:#fff}
.site-footer .brand-sub{color:rgba(255,255,255,.42)}
.foot-desc{
  margin-top:18px;
  font-size:14px;
  line-height:1.9;
  color:rgba(255,255,255,.6);
  max-width:280px;
}
.site-footer h4{
  font-size:14px;
  font-weight:700;
  letter-spacing:.08em;
  color:#fff;
  margin-bottom:18px;
}
.foot-list{list-style:none;display:flex;flex-direction:column;gap:11px;font-size:14.5px}
.foot-list a{color:rgba(255,255,255,.7)}
.foot-list a:hover{color:var(--accent)}
.foot-note{font-size:13.5px;line-height:1.95;color:rgba(255,255,255,.58)}
.footer-bottom{
  margin-top:52px;
  padding-top:22px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:14px;
  font-size:12.5px;
  color:rgba(255,255,255,.5);
}
.disclaimer{max-width:640px;line-height:1.8}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .page-hero{padding:64px 0 56px}
  .nav-links{
    position:absolute;
    left:0;right:0;top:100%;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:16px 24px 24px;
    background:var(--dark);
    border-radius:0 0 var(--r-card) var(--r-card);
    box-shadow:var(--sh-high);
  }
  .nav-links.is-open{display:flex}
  .nav-links a{
    width:100%;
    padding:13px 12px;
    font-size:17px;
    color:rgba(255,255,255,.82);
    border-radius:10px;
  }
  .nav-links a:hover{background:rgba(255,255,255,.08);color:#fff}
  .nav-links a.is-active{background:rgba(240,98,43,.2);color:#fff}
  .nav-toggle{display:inline-flex}
  .cta-inner{grid-template-columns:1fr;gap:32px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .feature-row{margin-bottom:64px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .page-hero{padding:52px 0 48px}
  .nav-aside .badge{display:none}
  .stat{flex:1 1 100%;border-left:0;padding:14px 0;border-top:1px solid rgba(255,255,255,.14)}
  .stat:first-child{border-top:0;padding-top:0}
  .stat:last-child{padding-bottom:0}
  .stat-row{padding-top:20px;margin-top:32px}
  .feature-media{margin-bottom:22px}
  .feature-body h2{font-size:1.4rem}
  .cta-band{padding:60px 0}
  .btn{width:100%}
  .nav-toggle{width:44px;height:44px}
  .nav-aside .btn{width:auto}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-bottom{flex-direction:column}
  .faq-answer{padding-right:10px}
  .faq-item summary{padding-right:40px;font-size:16px}
  .check-list li{gap:14px}
}
@media (max-width:520px){
  .brand-main{font-size:18px}
  .brand-sub{letter-spacing:.22em}
  .nav-aside{gap:8px}
  .nav-aside .btn{display:none}
  .sec-head h2{font-size:1.4rem}
  .mini-card{padding:24px 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;scroll-behavior:auto !important}
}

/* roulang page: category4 */
:root{
  --ink:#221B36;
  --ink-20:rgba(34,27,54,.20);
  --accent:#F0622B;
  --teal:#3FB8A8;
  --sand:#F6F3ED;
  --paper:#FFFFFF;
  --deep:#14101F;
  --t1:#1A1720;
  --t2:#5B5566;
  --t3:#8C8798;
  --line:#E3DDD3;
  --err:#C0392B;
  --r-card:18px;
  --r-img:12px;
  --r-btn:10px;
  --r-input:8px;
  --r-pill:999px;
  --sh1:0 2px 8px rgba(20,16,31,.05);
  --sh2:0 12px 32px rgba(20,16,31,.10);
  --sec:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --serif:"Noto Serif SC","Songti SC","STSong","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"SFMono-Regular","Menlo","Consolas",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  color:var(--t1);
  background:var(--sand);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .24s var(--ease)}
a:hover{color:var(--accent)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;color:var(--ink);letter-spacing:-.015em;font-weight:700}
h1,h2{font-family:var(--serif)}
h3,h4{font-family:var(--sans);font-weight:600}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(246,243,237,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh1)}
.nav-bar{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:76px;
  transition:min-height .24s var(--ease);
}
.site-header.is-scrolled .nav-bar{min-height:62px}
.brand{display:flex;flex-direction:column;line-height:1.1;text-decoration:none}
.brand-main{
  font-family:var(--serif);
  font-size:20px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:.02em;
}
.brand-sub{
  font-size:10px;
  letter-spacing:.28em;
  color:var(--t3);
  margin-top:5px;
}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{
  position:relative;
  font-size:15px;
  color:var(--t2);
  padding:6px 0;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  height:2px;
  width:0;
  background:var(--accent);
  transition:width .28s var(--ease);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{width:100%}
.nav-links a.is-active{color:var(--ink);font-weight:600}
.nav-links a.is-active::after{width:100%;background:var(--ink)}
.nav-aside{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--r-btn);
  background:var(--paper);
  cursor:pointer;
  align-items:center;
  justify-content:center;
  padding:0;
}
.nav-toggle span{
  position:relative;
  display:block;
  width:18px;
  height:2px;
  background:var(--ink);
  transition:background .2s var(--ease);
}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:var(--ink);
  transition:transform .24s var(--ease);
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- buttons & badges ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  min-height:44px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-btn);
  border:1.5px solid transparent;
  cursor:pointer;
  transition:background .24s var(--ease),color .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:var(--accent);color:#fff;transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--ink);color:#fff;transform:translateY(-1px)}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{border-color:rgba(255,255,255,.6);color:#fff;background:transparent}
.btn-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn-sm{padding:9px 16px;font-size:14px;min-height:40px}
.btn:active{transform:translateY(0)}
.badge{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:5px 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  letter-spacing:.08em;
  line-height:1.5;
}
.badge-teal{background:rgba(63,184,168,.14);color:#22766b}
.badge-teal::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--teal);
}
.badge-ghost{background:rgba(255,255,255,.12);color:rgba(255,255,255,.9);border:1px solid rgba(255,255,255,.28)}
.tag{
  display:inline-block;
  padding:4px 11px;
  border-radius:var(--r-pill);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--ink);
  background:rgba(34,27,54,.07);
}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  overflow:hidden;
  background:var(--deep);
  color:#fff;
  padding:76px 0 68px;
}
.cat-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:url(/assets/images/backpic/back-2.webp) center/cover no-repeat;
  opacity:.2;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(20,16,31,.92) 0%,rgba(20,16,31,.72) 52%,rgba(20,16,31,.42) 100%);
}
.cat-hero .container{position:relative;z-index:2}
.cat-hero h1{
  color:#fff;
  font-size:clamp(2rem,4.2vw,2.95rem);
  line-height:1.22;
  margin-top:18px;
  max-width:820px;
}
.hero-sub{
  margin-top:16px;
  max-width:640px;
  font-size:16px;
  color:rgba(255,255,255,.78);
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  margin-top:30px;
}
.hero-stats > div{
  padding-left:18px;
  border-left:1px solid rgba(255,255,255,.22);
}
.hero-stats b{
  display:block;
  font-family:var(--serif);
  font-size:28px;
  font-weight:700;
  line-height:1.2;
  color:#fff;
  font-variant-numeric:tabular-nums;
}
.hero-stats span{font-size:12.5px;color:rgba(255,255,255,.62);letter-spacing:.06em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

/* ---------- sections ---------- */
.section{padding:var(--sec) 0}
.section-alt{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  flex-wrap:wrap;
  margin-bottom:44px;
}
.sec-kicker{
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--accent);
  margin-bottom:12px;
}
.sec-head h2{font-size:clamp(1.5rem,2.6vw,2.1rem)}
.sec-head p{color:var(--t2);font-size:15px;max-width:520px;margin-top:12px}
.link-more{
  font-size:14.5px;
  font-weight:600;
  color:var(--ink);
  border-bottom:2px solid var(--accent);
  padding-bottom:2px;
}
.link-more:hover{color:var(--accent)}

/* ---------- schedule ---------- */
.schedule{
  display:grid;
  grid-template-columns:200px 1fr;
  gap:48px;
  align-items:start;
}
.day-index{position:sticky;top:104px;display:flex;flex-direction:column}
.day-index a{
  display:block;
  padding:10px 0 10px 16px;
  border-left:2px solid var(--line);
  color:var(--t2);
  font-size:13.5px;
  letter-spacing:.04em;
  transition:color .24s var(--ease),border-color .24s var(--ease);
}
.day-index a strong{
  display:block;
  font-family:var(--serif);
  font-size:19px;
  font-weight:700;
  color:var(--ink);
  line-height:1.35;
}
.day-index a:hover,.day-index a.is-current{color:var(--ink);border-left-color:var(--accent)}
.day{padding-bottom:36px;margin-bottom:36px;border-bottom:1px solid var(--line)}
.day:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
.day-head{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;margin-bottom:22px}
.day-head .num{
  font-family:var(--serif);
  font-size:40px;
  line-height:1;
  color:rgba(34,27,54,.32);
  font-variant-numeric:tabular-nums;
}
.day-head h3{font-size:18px}
.day-head .weekday{font-size:13px;color:var(--t3);letter-spacing:.08em}
.slot{
  position:relative;
  padding-left:24px;
  border-left:1px solid var(--line);
  margin-bottom:20px;
}
.slot:last-child{margin-bottom:0}
.slot::before{
  content:"";
  position:absolute;
  left:-5px;
  top:9px;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--teal);
  box-shadow:0 0 0 4px rgba(63,184,168,.14);
}
.slot:hover::before{animation:pulse .9s ease-out}
.slot .time{
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--t3);
  font-variant-numeric:tabular-nums;
}
.slot h4{font-size:16.5px;margin:4px 0 6px}
.slot p{font-size:14px;color:var(--t2)}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(63,184,168,.42)}
  100%{box-shadow:0 0 0 14px rgba(63,184,168,0)}
}

/* ---------- feature news ---------- */
.feature-grid{
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:32px;
  align-items:start;
}
.feature-card{
  display:block;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh1);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.feature-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh2);
  border-color:var(--ink-20);
}
.feature-card img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:0;
}
.feature-card .body{padding:26px 26px 28px}
.feature-card h3{font-size:20px;margin:14px 0 10px;line-height:1.45}
.feature-card:hover h3{color:var(--accent)}
.feature-card p{font-size:14.5px;color:var(--t2)}
.meta{
  font-size:12.5px;
  color:var(--t3);
  letter-spacing:.05em;
  font-variant-numeric:tabular-nums;
  margin-top:14px;
}
.mini-list{display:flex;flex-direction:column}
.mini-item{
  display:grid;
  grid-template-columns:40px 1fr;
  gap:16px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
}
.mini-item:first-child{padding-top:0}
.mini-item:last-child{border-bottom:0;padding-bottom:0}
.mini-item .idx{
  font-family:var(--serif);
  font-size:22px;
  color:rgba(34,27,54,.24);
  line-height:1.4;
}
.mini-item h3{font-size:16.5px;margin:8px 0 6px;line-height:1.5}
.mini-item:hover h3{color:var(--accent)}
.mini-item p{font-size:13.5px;color:var(--t2)}

/* ---------- steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:28px;
}
.step{
  position:relative;
  padding-top:28px;
  border-top:1px solid var(--line);
}
.step::before{
  content:"";
  position:absolute;
  top:-5px;
  left:0;
  width:9px;
  height:9px;
  border-radius:50%;
  background:var(--accent);
}
.step .no{
  font-family:var(--serif);
  font-size:26px;
  color:rgba(34,27,54,.26);
  line-height:1.2;
}
.step h3{font-size:16px;margin:8px 0 8px}
.step p{font-size:14px;color:var(--t2)}

/* ---------- facts ---------- */
.facts{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
.fact{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px;
}
.fact h3{font-size:16.5px;margin-bottom:10px}
.fact p{font-size:14px;color:var(--t2)}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;
  cursor:pointer;
  position:relative;
  padding:22px 44px 22px 0;
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  transition:color .24s var(--ease);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--accent)}
.faq summary::after{
  content:"+";
  position:absolute;
  right:6px;
  top:50%;
  transform:translateY(-50%);
  font-size:24px;
  font-weight:300;
  line-height:1;
  color:var(--t2);
  transition:transform .24s var(--ease),color .24s var(--ease);
}
.faq details[open] summary::after{content:"−";color:var(--accent)}
.faq details p{
  padding:0 44px 24px 0;
  font-size:15px;
  color:var(--t2);
  line-height:1.85;
}

/* ---------- cta ---------- */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--deep);
  color:#fff;
  padding:80px 0;
}
.cta-inner{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:40px;
  align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(1.6rem,3vw,2.3rem)}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;margin-top:16px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-dot{
  position:absolute;
  right:6%;
  bottom:22px;
  width:6px;height:6px;border-radius:50%;
  background:var(--teal);
  opacity:.7;
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--paper);
  border-top:1px solid var(--line);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:32px;
  padding-bottom:44px;
}
.footer-grid h4{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--t3);
  margin-bottom:16px;
  font-weight:600;
}
.foot-desc{font-size:14px;color:var(--t2);margin-top:14px;max-width:260px}
.foot-list{display:flex;flex-direction:column}
.foot-list a{
  display:inline-block;
  padding:5px 0;
  font-size:14.5px;
  color:var(--t2);
}
.foot-list a:hover{color:var(--accent)}
.foot-note{font-size:13px;color:var(--t3);line-height:1.9}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 26px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12.5px;
  color:var(--t3);
}
.disclaimer{max-width:640px}

/* ---------- reveal ---------- */
.reveal{animation:rise .6s var(--ease) both}
.reveal.d1{animation-delay:.08s}
.reveal.d2{animation-delay:.16s}
.reveal.d3{animation-delay:.24s}
@keyframes rise{
  from{opacity:0;transform:translateY(12px)}
  to{opacity:1;transform:translateY(0)}
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:absolute;
    top:100%;
    left:-24px;
    right:-24px;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:16px 24px 26px;
    background:var(--deep);
    box-shadow:var(--sh2);
  }
  .nav-links.is-open{display:flex}
  .nav-links a{
    color:rgba(255,255,255,.86);
    font-size:18px;
    padding:13px 0;
    border-bottom:1px solid rgba(255,255,255,.09);
  }
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:#fff}
  .nav-links a:hover{color:var(--accent)}
  .schedule{grid-template-columns:1fr;gap:28px}
  .day-index{
    position:static;
    flex-direction:row;
    flex-wrap:wrap;
    gap:10px;
  }
  .day-index a{
    border-left:0;
    border:1px solid var(--line);
    border-radius:var(--r-pill);
    padding:8px 16px;
    background:var(--paper);
  }
  .day-index a strong{display:inline;font-size:14px;margin-right:6px}
  .day-index a:hover,.day-index a.is-current{border-color:var(--ink);background:rgba(34,27,54,.05)}
  .feature-grid{grid-template-columns:1fr;gap:28px}
  .cta-inner{grid-template-columns:1fr}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .steps{grid-template-columns:1fr 1fr;gap:24px}
  .facts{grid-template-columns:1fr}
  .hero-stats{gap:20px}
  .hero-stats > div{padding-left:14px}
  .cta-band{padding:64px 0}
}
@media (max-width:560px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .cat-hero{padding:56px 0 52px}
  .nav-links{left:-18px;right:-18px}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .day-head .num{font-size:34px}
  .feature-card .body{padding:20px}
  .faq summary{padding-right:36px;font-size:15.5px}
  .faq details p{padding-right:20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation:none!important;
    transition:none!important;
    scroll-behavior:auto!important;
  }
}