/* roulang page: index */
:root{
  --c-primary:#12557A;
  --c-primary-hover:#0D4462;
  --c-primary-active:#0A3A54;
  --c-primary-soft:#E8F1F7;
  --c-primary-line:#C9DEEB;
  --c-accent:#FF6A2B;
  --c-accent-hover:#E85A1C;
  --c-text:#14202B;
  --c-body:#3C4A57;
  --c-muted:#6B7A88;
  --c-line:#E3E9EF;
  --c-bg:#F4F7FA;
  --c-surface:#FFFFFF;
  --c-footer:#0E1F2B;
  --c-success:#1F8A5F;
  --c-warning:#D9822B;
  --c-danger:#C7402F;
  --ff-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --ff-num:Inter,"Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --w-container:1240px;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-badge:6px;
  --sh-sm:0 1px 2px rgba(18,32,43,.06);
  --sh-card:0 8px 24px -12px rgba(18,32,43,.18),0 2px 6px rgba(18,32,43,.05);
  --sh-hover:0 16px 32px -14px rgba(18,32,43,.26);
  --sh-nav:0 10px 30px -18px rgba(18,32,43,.28);
  --sp-section:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--ff-sans);
  font-size:16.5px;
  line-height:1.88;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.nav-locked{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color 180ms ease-out}
a:hover{color:var(--c-primary-hover)}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:700;letter-spacing:.2px}
h2{font-size:clamp(26px,2.3vw,32px);line-height:1.35;font-weight:600}
h3{font-size:clamp(19px,1.4vw,21px);line-height:1.5;font-weight:600}
p{margin:0 0 20px}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}

.container{width:100%;max-width:var(--w-container);margin:0 auto;padding:0 32px}
.section{padding:var(--sp-section) 0}
.section-alt{background:var(--c-surface)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head .eyebrow{display:block;font-family:var(--ff-num);font-size:12px;letter-spacing:.14em;color:var(--c-accent);font-weight:500;margin-bottom:10px}
.section-head h2 + .section-desc{margin:10px 0 0;font-size:15px;color:var(--c-muted);max-width:620px;line-height:1.8}
.divider{height:1px;background:var(--c-line);border:0;margin:0 0 28px}

/* ============ 悬浮胶囊导航 ============ */
.site-header{position:fixed;top:16px;left:0;right:0;z-index:60;pointer-events:none}
.site-nav{
  pointer-events:auto;
  width:min(1240px,calc(100% - 32px));
  margin:0 auto;
  background:rgba(255,255,255,.94);
  border:1px solid var(--c-line);
  border-radius:999px;
  box-shadow:var(--sh-nav);
  transition:box-shadow 180ms ease-out,background-color 180ms ease-out;
}
.site-nav.is-stuck{box-shadow:var(--sh-card);background:rgba(255,255,255,.99)}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px;padding:0 12px 0 24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--c-primary);letter-spacing:.4px;flex:none}
.brand:hover{color:var(--c-primary-hover)}
.brand-mark{width:30px;height:30px;border-radius:9px;background:var(--c-primary);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;font-family:var(--ff-num);letter-spacing:0}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:12px;flex:1}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  font-weight:500;
  color:var(--c-body);
  border-radius:999px;
  white-space:nowrap;
  transition:color 180ms ease-out,background-color 180ms ease-out;
}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-links a.is-active{color:var(--c-primary);font-weight:600}
.nav-links a.is-active::after{
  content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--c-primary);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.nav-burger{
  display:none;width:44px;height:44px;border-radius:999px;border:1px solid var(--c-line);
  background:#fff;cursor:pointer;position:relative;flex:none;
  transition:border-color 180ms ease-out,background-color 180ms ease-out;
}
.nav-burger span{position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--c-text);transform:translateX(-50%);transition:transform 180ms ease-out,opacity 180ms ease-out}
.nav-burger span:nth-child(1){top:16px}
.nav-burger span:nth-child(2){top:21px}
.nav-burger span:nth-child(3){top:26px}
.nav-burger:hover{border-color:var(--c-primary);background:var(--c-primary-soft)}
.nav-burger.is-open span:nth-child(1){transform:translateX(-50%) translateY(5px) rotate(45deg)}
.nav-burger.is-open span:nth-child(2){opacity:0}
.nav-burger.is-open span:nth-child(3){transform:translateX(-50%) translateY(-5px) rotate(-45deg)}

.nav-drawer{
  position:fixed;inset:0;background:#fff;z-index:59;
  display:none;flex-direction:column;padding:96px 20px 24px;
}
.nav-drawer.is-open{display:flex}
.drawer-list{flex:1;overflow-y:auto}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;font-size:16px;font-weight:500;color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.drawer-list a:hover,.drawer-list a.is-active{color:var(--c-primary)}
.drawer-list a::after{content:"›";color:var(--c-muted);font-size:20px}
.drawer-contact{margin-top:16px;font-size:13px;color:var(--c-muted);line-height:1.9}
.drawer-cta{margin-top:16px;display:block}
.drawer-cta .btn{width:100%}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;line-height:1;border:1px solid transparent;
  cursor:pointer;text-decoration:none;white-space:nowrap;
  transition:background-color 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out,transform 180ms ease-out,box-shadow 180ms ease-out;
}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-1px)}
.btn-primary:active{background:var(--c-primary-active);transform:translateY(0)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:var(--c-accent-hover);color:#fff;transform:translateY(-1px)}
.btn-accent:active{background:#CF5015;transform:translateY(0)}
.btn-outline{background:#fff;border-color:var(--c-line);color:var(--c-primary)}
.btn-outline:hover{border-color:var(--c-primary);background:var(--c-primary-soft);color:var(--c-primary)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.16);border-color:#fff;color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn:disabled,.btn[aria-disabled="true"]{color:var(--c-muted);background:#EEF3F7;border-color:var(--c-line);cursor:not-allowed;transform:none}
.btn-ghost:focus-visible,.btn-accent:focus-visible{outline:2px solid #fff;outline-offset:2px}

.text-link{font-size:14px;font-weight:500;color:var(--c-primary);border-bottom:1px solid transparent;transition:border-color 180ms ease-out,color 180ms ease-out}
.text-link:hover{color:var(--c-primary-hover);border-bottom-color:var(--c-primary-hover)}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:#0B2A3D;isolation:isolate}
.hero-media{position:absolute;inset:0;z-index:-2}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-overlay{
  position:absolute;inset:0;z-index:-1;
  background:linear-gradient(90deg,rgba(11,42,61,.90) 0%,rgba(11,42,61,.66) 46%,rgba(11,42,61,.16) 100%);
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:120px;z-index:1;
  background:linear-gradient(180deg,rgba(244,247,250,0) 0%,#F4F7FA 100%);
  pointer-events:none;
}
.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.65fr);
  gap:48px;align-items:center;
  padding:158px 32px 122px;
}
.hero-copy{max-width:640px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:30px;padding:0 14px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  color:#fff;font-size:13px;font-weight:500;letter-spacing:.4px;
}
.hero-copy h1{
  margin:22px 0 18px;color:#fff;
  font-size:clamp(34px,3.4vw,44px);line-height:1.25;font-weight:700;
}
.hero-sub{font-size:17px;line-height:1.8;color:rgba(255,255,255,.84);margin:0 0 30px;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:40px;padding-top:26px;border-top:1px solid rgba(255,255,255,.18)}
.hero-stats li{min-width:96px}
.hero-stats strong{display:block;font-family:var(--ff-num);font-size:24px;font-weight:600;color:var(--c-accent);line-height:1.3}
.hero-stats span{display:block;font-size:13px;color:rgba(255,255,255,.72);margin-top:4px}
.hero-poster{
  justify-self:end;width:100%;max-width:274px;
  background:#fff;border-radius:var(--r-card);padding:10px;box-shadow:var(--sh-card);
}
.hero-poster .poster-img{aspect-ratio:3/4;border-radius:var(--r-img);overflow:hidden;background:#EEF3F7}
.hero-poster .poster-img img{width:100%;height:100%;object-fit:cover}
.hero-poster .poster-body{padding:14px 6px 6px}
.hero-poster .poster-body h2{font-size:16px;line-height:1.5;font-weight:600;margin:0 0 6px}
.hero-poster .poster-body p{margin:0;font-size:13px;line-height:1.7;color:var(--c-muted)}

/* ============ 快捷入口 ============ */
.quick-bar{position:relative;z-index:3;margin-top:-52px}
.quick-inner{
  display:flex;flex-wrap:wrap;gap:12px;
  background:#fff;border:1px solid var(--c-line);border-radius:999px;
  box-shadow:var(--sh-card);padding:14px 18px;
}
.quick-pill{
  display:inline-flex;align-items:center;gap:8px;
  height:42px;padding:0 18px;border-radius:999px;
  border:1px solid var(--c-line);background:#fff;
  color:var(--c-body);font-size:14.5px;font-weight:500;
  transition:background-color 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out,transform 180ms ease-out;
}
.quick-pill:hover{background:var(--c-primary-soft);border-color:var(--c-primary-line);color:var(--c-primary);transform:translateY(-2px)}
.quick-pill .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:none}

/* ============ 横滑 rail ============ */
.rail-wrap{position:relative}
.rail-nav{display:flex;gap:10px;flex:none}
.rail-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--c-line);background:#fff;
  color:var(--c-text);font-size:19px;line-height:1;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;
  transition:background-color 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out;
}
.rail-btn:hover{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.rail-btn:disabled{color:var(--c-muted);background:#EEF3F7;border-color:var(--c-line);cursor:not-allowed}
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 18px;
  scroll-snap-type:x mandatory;scrollbar-width:none;-ms-overflow-style:none;
}
.rail::-webkit-scrollbar{display:none}
.rail .rail-item{flex:0 0 272px;scroll-snap-align:start}
.rail-hint{display:none;font-size:12px;color:var(--c-muted);text-align:center;margin:0}

/* ============ 卡片体系 ============ */
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:14px;box-shadow:var(--sh-card);
  transition:transform 180ms ease-out,box-shadow 180ms ease-out,border-color 180ms ease-out;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:var(--c-primary-line)}
.card-cover{display:block;border-radius:var(--r-img);overflow:hidden;background:#EEF3F7;aspect-ratio:16/9}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform 240ms ease-out}
.card:hover .card-cover img{transform:scale(1.03)}
.card-cover.ratio-3-4{aspect-ratio:3/4}
.card-body{padding-top:14px}
.card-meta{display:flex;align-items:center;gap:10px;margin-bottom:10px;flex-wrap:wrap}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-badge);background:var(--c-primary-soft);
  color:var(--c-primary);font-size:12px;font-weight:500;letter-spacing:.2px;
}
.badge-accent{background:transparent;border:1px solid var(--c-accent);color:var(--c-accent)}
.time{font-family:var(--ff-num);font-size:13px;color:var(--c-muted);letter-spacing:.2px}
.card-title{font-size:17px;line-height:1.5;font-weight:600;margin:0 0 8px;color:var(--c-text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-title a{color:inherit}
.card-title a:hover{color:var(--c-primary)}
.card-desc{margin:0;font-size:14.5px;line-height:1.8;color:var(--c-muted);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px;padding-top:12px;border-top:1px solid var(--c-line)}

/* ============ 重点推荐 2+1 ============ */
.feature-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:24px}
.feature-main{position:relative;display:block;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-card);min-height:420px;transition:transform 180ms ease-out,box-shadow 180ms ease-out}
.feature-main:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.feature-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.feature-main .shade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,42,61,.05) 30%,rgba(11,42,61,.86) 100%)}
.feature-main .feature-body{position:absolute;left:0;right:0;bottom:0;padding:28px 28px 26px;color:#fff}
.feature-main .feature-body h3{color:#fff;font-size:clamp(20px,1.7vw,25px);line-height:1.45;margin:12px 0 10px}
.feature-main .feature-body p{color:rgba(255,255,255,.82);font-size:14.5px;line-height:1.8;margin:0}
.feature-main .badge{background:rgba(255,255,255,.9);color:var(--c-primary)}
.feature-side{display:grid;gap:24px;align-content:stretch}
.mini-card{display:grid;grid-template-columns:132px minmax(0,1fr);gap:16px;align-items:center;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:12px;box-shadow:var(--sh-card);transition:transform 180ms ease-out,box-shadow 180ms ease-out,border-color 180ms ease-out}
.mini-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:var(--c-primary-line)}
.mini-card .mini-cover{aspect-ratio:1/1;border-radius:var(--r-img);overflow:hidden;background:#EEF3F7}
.mini-card .mini-cover img{width:100%;height:100%;object-fit:cover}
.mini-card h3{font-size:16px;line-height:1.5;margin:6px 0 6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mini-card h3 a{color:var(--c-text)}
.mini-card h3 a:hover{color:var(--c-primary)}
.mini-card p{margin:0;font-size:13.5px;line-height:1.7;color:var(--c-muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ============ 专题分区 ============ */
.topic-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:8px}
.topic-head h2{font-size:clamp(21px,1.8vw,25px)}
.topic-head .topic-sub{font-size:14px;color:var(--c-muted);margin:8px 0 0}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin-top:26px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}

/* ============ 最新信息 ============ */
.filter-pills{display:flex;flex-wrap:wrap;gap:10px}
.pill{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;border-radius:999px;
  border:1px solid var(--c-line);background:#fff;color:var(--c-body);font-size:13.5px;font-weight:500;
  transition:background-color 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out;
}
.pill:hover{border-color:var(--c-primary);color:var(--c-primary)}
.pill.is-current{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.latest-hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:24px;align-items:stretch;padding:14px;margin-bottom:24px}
.latest-hero-cover{display:block;border-radius:var(--r-img);overflow:hidden;background:#EEF3F7;aspect-ratio:16/9;height:100%}
.latest-hero-cover img{width:100%;height:100%;object-fit:cover;transition:transform 240ms ease-out}
.latest-hero:hover .latest-hero-cover img{transform:scale(1.03)}
.latest-hero-body{padding:12px 6px 12px 0;display:flex;flex-direction:column;justify-content:center}
.latest-hero-body .card-title{font-size:clamp(19px,1.7vw,23px);-webkit-line-clamp:2}
.latest-hero-body .card-desc{-webkit-line-clamp:3}
.latest-hero-body .card-foot{border-top:0;padding-top:16px;margin-top:auto}
.empty-state{
  background:#fff;border:1px dashed var(--c-primary-line);border-radius:var(--r-card);
  padding:64px 24px;text-align:center;box-shadow:var(--sh-sm);
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:16px;
  border:2px solid rgba(18,85,122,.2);position:relative;
}
.empty-state .empty-icon::before,.empty-state .empty-icon::after{
  content:"";position:absolute;background:rgba(18,85,122,.2);border-radius:2px;
}
.empty-state .empty-icon::before{left:14px;right:14px;top:22px;height:2px}
.empty-state .empty-icon::after{left:14px;right:24px;top:31px;height:2px}
.empty-state strong{display:block;font-size:16px;font-weight:600;color:var(--c-text);margin-bottom:8px}
.empty-state span{font-size:13.5px;color:var(--c-muted)}
.latest-foot{display:flex;justify-content:center;margin-top:32px}

/* ============ 能力区块 ============ */
.ability{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:center}
.number-list li{display:grid;grid-template-columns:56px minmax(0,1fr);gap:18px;padding:22px 0;border-bottom:1px solid var(--c-line)}
.number-list li:first-child{padding-top:0}
.number-list li:last-child{border-bottom:0;padding-bottom:0}
.number-list .num{font-family:var(--ff-num);font-size:26px;font-weight:600;color:var(--c-primary);line-height:1.2;letter-spacing:.02em}
.number-list h3{font-size:17px;margin-bottom:6px}
.number-list p{margin:0;font-size:14.5px;line-height:1.8;color:var(--c-muted)}
.ability-visual{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.ability-visual .card{padding:10px}
.ability-visual .card:nth-child(2){transform:translateY(28px)}
.ability-visual .card:hover:nth-child(2){transform:translateY(25px)}

/* ============ FAQ ============ */
.faq{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:6px 26px}
.faq details{border-bottom:1px solid var(--c-line);position:relative}
.faq details:last-child{border-bottom:0}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;font-size:16px;font-weight:600;color:var(--c-text);
  cursor:pointer;list-style:none;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"›";font-size:20px;color:var(--c-muted);line-height:1;transition:transform 180ms ease-out,color 180ms ease-out}
.faq details[open] summary::after{transform:rotate(90deg);color:var(--c-primary)}
.faq details[open] summary{color:var(--c-primary)}
.faq .faq-a{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--c-body);max-width:860px}
.faq details[open] summary::before{
  content:"";position:absolute;left:-14px;top:26px;width:3px;height:20px;border-radius:2px;background:var(--c-primary);
}

/* ============ CTA 通栏 ============ */
.cta-banner{
  background:var(--c-primary);border-radius:20px;padding:48px;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:center;
  box-shadow:var(--sh-card);
}
.cta-banner h2{color:#fff}
.cta-banner p{color:rgba(255,255,255,.82);margin:12px 0 0;font-size:15px;line-height:1.8;max-width:460px}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.cta-form input{
  flex:1 1 240px;height:48px;padding:0 16px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.1);color:#fff;font-size:15px;
  transition:border-color 180ms ease-out,box-shadow 180ms ease-out,background-color 180ms ease-out;
}
.cta-form input::placeholder{color:rgba(255,255,255,.62)}
.cta-form input:focus{outline:none;border-color:#fff;background:rgba(255,255,255,.16);box-shadow:0 0 0 3px rgba(255,255,255,.22)}
.cta-note{font-size:12.5px;color:rgba(255,255,255,.66);margin:12px 0 0}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.72);margin-top:var(--sp-section);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{color:#fff;font-size:18px}
.footer-brand .brand-mark{background:var(--c-accent)}
.footer-brand p{margin:16px 0 0;font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.62);max-width:320px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin:0 0 16px;letter-spacing:.4px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff}
.footer-col .contact-line{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72)}
.footer-col .contact-line strong{display:block;color:#fff;font-family:var(--ff-num);font-weight:500;font-size:15px}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.62)}
.footer-bottom a:hover{color:#fff}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .grid-4{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1023px){
  :root{--sp-section:64px}
  .container{padding:0 24px}
  .nav-links,.nav-actions .btn{display:none}
  .nav-burger{display:inline-flex;align-items:center;justify-content:center}
  .nav-inner{height:56px;padding:0 10px 0 18px;gap:12px}
  .nav-links{display:none}
  .nav-actions{margin-left:auto}
  .hero-inner{grid-template-columns:minmax(0,1fr);gap:36px;padding:130px 24px 100px}
  .hero-poster{display:none}
  .feature-grid{grid-template-columns:minmax(0,1fr)}
  .feature-main{min-height:340px}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ability{grid-template-columns:minmax(0,1fr);gap:36px}
  .ability-visual .card:nth-child(2){transform:none}
  .ability-visual .card:hover:nth-child(2){transform:translateY(-3px)}
  .cta-banner{grid-template-columns:minmax(0,1fr);padding:36px;gap:26px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .latest-hero{grid-template-columns:minmax(0,1fr)}
  .latest-hero-body{padding:4px 4px 8px}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px}
}
@media (max-width:767px){
  :root{--sp-section:52px}
  body{font-size:16px}
  .container{padding:0 20px}
  .hero-inner{padding:120px 20px 88px}
  .hero-actions .btn{flex:1 1 100%;min-height:44px}
  .hero-stats{gap:24px}
  .hero-stats li{min-width:78px}
  .hero-poster{display:none}
  .quick-bar{margin-top:-40px}
  .quick-inner{border-radius:20px;padding:14px}
  .quick-pill{height:40px;padding:0 14px;font-size:14px}
  .grid-4,.grid-3,.grid-2{grid-template-columns:minmax(0,1fr)}
  .rail-nav{display:none}
  .rail .rail-item{flex:0 0 240px}
  .rail-hint{display:block}
  .mini-card{grid-template-columns:104px minmax(0,1fr)}
  .faq{padding:4px 18px}
  .faq details[open] summary::before{left:-10px}
  .cta-banner{padding:28px 22px;border-radius:16px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-col.is-secondary{display:none}
  .site-header{top:10px}
  .site-nav{width:calc(100% - 24px)}
  .latest-foot .btn{width:100%}
}
@media (max-width:480px){
  .hero-stats{gap:18px}
  .hero-stats strong{font-size:20px}
  .brand{font-size:16px}
}

/* roulang page: category1 */
:root{
  --c-primary:#12557A;
  --c-primary-hover:#0D4462;
  --c-primary-active:#0A3A54;
  --c-primary-soft:#E8F1F7;
  --c-primary-line:#C9DEEB;
  --c-accent:#FF6A2B;
  --c-accent-hover:#E85A1C;
  --c-text:#14202B;
  --c-body:#3C4A57;
  --c-muted:#6B7A88;
  --c-line:#E3E9EF;
  --c-bg:#F4F7FA;
  --c-surface:#FFFFFF;
  --c-footer:#0E1F2B;
  --c-success:#1F8A5F;
  --c-warning:#D9822B;
  --c-danger:#C7402F;
  --w-container:1240px;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-badge:6px;
  --r-cta:20px;
  --sh-sm:0 1px 2px rgba(18,32,43,.06);
  --sh-card:0 8px 24px -12px rgba(18,32,43,.18),0 2px 6px rgba(18,32,43,.05);
  --sh-hover:0 16px 32px -14px rgba(18,32,43,.26);
  --sh-nav:0 10px 30px -18px rgba(18,32,43,.28);
  --ff-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --ff-num:Inter,"Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sp-section:84px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--ff-sans);
  font-size:16.5px;
  line-height:1.88;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease-out,background-color .18s ease-out,border-color .18s ease-out}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-family:var(--ff-sans);font-weight:600;line-height:1.35}
p{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:var(--w-container);margin:0 auto;padding:0 32px}
.section{padding:var(--sp-section) 0}
.section-tight{padding:56px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:clamp(26px,2.2vw,32px);letter-spacing:-.2px}
.section-head .sub{margin-top:10px;font-size:15px;color:var(--c-muted);max-width:640px}
.section-head .more{font-size:14.5px;font-weight:500;white-space:nowrap}
.section-head .more::after{content:"→";margin-left:6px;font-family:var(--ff-num)}
.section-head .more:hover{color:var(--c-primary-hover);text-decoration:underline;text-underline-offset:4px}
.rule{height:1px;background:var(--c-line);border:0;margin:0}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  border:1px solid transparent;font-size:15.5px;font-weight:500;
  cursor:pointer;white-space:nowrap;
  transition:transform .18s ease-out,background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.btn-sm{height:40px;padding:0 18px;font-size:14.5px}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-1px)}
.btn-primary:active{background:var(--c-primary-active);transform:translateY(0)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:var(--c-accent-hover);color:#fff;transform:translateY(-1px)}
.btn-outline{background:var(--c-surface);border-color:var(--c-line);color:var(--c-primary)}
.btn-outline:hover{border-color:var(--c-primary);background:var(--c-primary-soft);color:var(--c-primary)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;transform:translateY(-1px)}
.btn[disabled],.btn.is-disabled{background:#EEF3F7;color:var(--c-muted);border-color:var(--c-line);pointer-events:none;box-shadow:none}
.text-link{color:var(--c-primary);font-size:14.5px;font-weight:500}
.text-link:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}

/* 徽章与标签 */
.badge{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-badge);background:var(--c-primary-soft);color:var(--c-primary);font-size:13px;font-weight:500}
.badge-new{border:1px solid var(--c-accent);color:var(--c-accent);background:#fff;border-radius:4px;font-size:12px;height:22px;padding:0 7px}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:999px;border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-body);font-size:14px;transition:.18s ease-out}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}
.chip.is-current{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.time{font-family:var(--ff-num);font-size:13.5px;color:var(--c-muted);letter-spacing:.02em}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;padding-top:16px}
.site-nav{
  width:min(var(--w-container),calc(100% - 32px));
  margin:0 auto;height:64px;border-radius:999px;
  background:rgba(255,255,255,.94);
  border:1px solid var(--c-line);
  box-shadow:var(--sh-nav);
  transition:box-shadow .18s ease-out,background-color .18s ease-out;
}
.site-nav.is-stuck{background:rgba(255,255,255,.99);box-shadow:var(--sh-card)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:100%;padding:0 16px 0 22px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17.5px;font-weight:700;color:var(--c-primary);letter-spacing:-.2px}
.brand:hover{color:var(--c-primary-hover)}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;
  background:var(--c-primary);color:#fff;font-family:var(--ff-num);font-size:15px;font-weight:700;
}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 13px;border-radius:999px;font-size:15px;color:var(--c-body)}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-links a.is-active{color:var(--c-primary);font-weight:600}
.nav-links a.is-active::after{content:"";position:absolute;left:50%;bottom:3px;transform:translateX(-50%);width:18px;height:2px;border-radius:999px;background:var(--c-primary)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-burger{display:none;flex-direction:column;justify-content:center;gap:4px;width:44px;height:44px;border-radius:12px;border:1px solid var(--c-line);background:#fff;cursor:pointer}
.nav-burger span{display:block;width:18px;height:2px;margin:0 auto;border-radius:2px;background:var(--c-text);transition:.18s ease-out}
.nav-burger:hover{border-color:var(--c-primary);background:var(--c-primary-soft)}
.nav-drawer{display:none;position:fixed;inset:0;z-index:70;background:#fff;padding:24px 20px 0;overflow-y:auto}
.nav-drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-list a{display:flex;align-items:center;justify-content:space-between;height:48px;border-bottom:1px solid var(--c-line);color:var(--c-text);font-size:16px}
.drawer-list a.is-active{color:var(--c-primary);font-weight:600}
.drawer-list a:hover{color:var(--c-primary);background:var(--c-primary-soft);padding-left:8px}
.drawer-foot{position:sticky;bottom:0;background:#fff;padding:16px 0 24px;margin-top:12px}
.drawer-foot .btn{width:100%}
.drawer-contact{margin-top:14px;font-size:13.5px;color:var(--c-muted)}
body.nav-open{overflow:hidden}
body.nav-open .nav-drawer{display:block}

/* 面包屑 */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);padding-top:26px}
.crumb a{color:var(--c-primary)}
.crumb a:hover{text-decoration:underline;text-underline-offset:3px}
.crumb .sep{color:var(--c-line)}

/* 分类头部 */
.cat-hero{background:var(--c-primary-soft);border-bottom:1px solid var(--c-primary-line);padding-bottom:46px}
.cat-hero .inner{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:end;margin-top:26px}
.cat-hero h1{font-size:clamp(30px,3.4vw,44px);line-height:1.25;letter-spacing:-.5px;font-weight:700}
.cat-hero .lead{margin-top:14px;font-size:16.5px;color:var(--c-body);max-width:620px}
.cat-facts{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.fact{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:18px;box-shadow:var(--sh-sm)}
.fact b{display:block;font-family:var(--ff-num);font-size:24px;font-weight:700;color:var(--c-primary);letter-spacing:-.4px}
.fact span{display:block;margin-top:6px;font-size:13.5px;color:var(--c-muted);line-height:1.7}

/* 精选大卡 */
.feature-card{position:relative;overflow:hidden;border-radius:var(--r-card);border:1px solid var(--c-line);box-shadow:var(--sh-card);background:var(--c-surface)}
.feature-media{position:relative;aspect-ratio:16/9;overflow:hidden;border-radius:var(--r-img)}
.feature-media img{width:100%;height:100%;object-fit:cover}
.feature-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,42,61,.82) 8%,rgba(11,42,61,.42) 52%,rgba(11,42,61,.08) 100%)}
.feature-body{position:absolute;left:0;bottom:0;max-width:660px;padding:34px 38px;color:#fff}
.feature-body .badge{background:rgba(255,255,255,.92);color:var(--c-primary)}
.feature-body h2{margin-top:14px;font-size:clamp(22px,2.4vw,30px);line-height:1.4;color:#fff;letter-spacing:-.3px}
.feature-body p{margin-top:12px;font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.86)}
.feature-meta{display:flex;align-items:center;gap:16px;margin-top:18px}
.feature-meta .time{color:rgba(255,255,255,.78)}

/* 编号列表 */
.number-list{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden}
.number-item{display:grid;grid-template-columns:70px minmax(0,1fr) auto;gap:22px;align-items:center;padding:22px 26px;border-bottom:1px solid var(--c-line);transition:background-color .18s ease-out}
.number-item:last-child{border-bottom:0}
.number-item:hover{background:var(--c-bg)}
.number-item .num{font-family:var(--ff-num);font-size:19px;font-weight:700;color:var(--c-primary);letter-spacing:.02em}
.number-item h3{font-size:18px;font-weight:600;color:var(--c-text);overflow:hidden;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical}
.number-item p{margin-top:6px;font-size:14.5px;color:var(--c-muted);line-height:1.75;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}

/* 步骤条 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-card);transition:transform .18s ease-out,box-shadow .18s ease-out}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.step .snum{font-family:var(--ff-num);font-size:13px;font-weight:600;color:var(--c-primary);letter-spacing:.14em}
.step h3{margin-top:12px;font-size:19px}
.step p{margin-top:10px;font-size:14.5px;color:var(--c-body)}
.step .time{display:block;margin-top:14px}

/* 图文板块 */
.split{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center}
.split-media{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-card);aspect-ratio:4/3}
.split-media img{width:100%;height:100%;object-fit:cover}
.split-list li{display:grid;grid-template-columns:56px minmax(0,1fr);gap:18px;padding:20px 0;border-bottom:1px solid var(--c-line)}
.split-list li:first-child{padding-top:0}
.split-list li:last-child{border-bottom:0;padding-bottom:0}
.split-list .idx{font-family:var(--ff-num);font-size:22px;font-weight:700;color:var(--c-primary);line-height:1.4}
.split-list h3{font-size:18px}
.split-list p{margin-top:8px;font-size:15px;color:var(--c-body)}

/* FAQ */
.faq-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:8px 26px}
.faq-card details{border-bottom:1px solid var(--c-line)}
.faq-card details:last-child{border-bottom:0}
.faq-card summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0 22px 0;font-size:16.5px;font-weight:600;color:var(--c-text);position:relative;
  transition:color .18s ease-out;
}
.faq-card summary::-webkit-details-marker{display:none}
.faq-card summary:hover{color:var(--c-primary)}
.faq-card summary::after{content:"";width:9px;height:9px;border-right:2px solid var(--c-primary);border-bottom:2px solid var(--c-primary);transform:rotate(-45deg);transition:transform .18s ease-out;flex:0 0 auto;margin-right:4px}
.faq-card details[open] summary::after{transform:rotate(45deg)}
.faq-card details[open] summary::before{content:"";position:absolute;left:-26px;top:26px;width:3px;height:20px;border-radius:3px;background:var(--c-primary)}
.faq-card .answer{padding:0 34px 24px 0;font-size:15px;color:var(--c-body);line-height:1.85}

/* CTA */
.cta-band{background:var(--c-primary);border-radius:var(--r-cta);padding:48px;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center;box-shadow:var(--sh-card)}
.cta-band h2{color:#fff;font-size:clamp(22px,2.2vw,28px)}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.82);font-size:15.5px;max-width:560px}
.cta-form{display:flex;gap:12px;align-items:flex-start}
.cta-form .field{display:flex;flex-direction:column;gap:8px}
.cta-form label{font-size:13px;font-weight:500;color:rgba(255,255,255,.86)}
.cta-form input{
  width:270px;height:48px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.36);background:rgba(255,255,255,.12);color:#fff;
  transition:border-color .18s ease-out,box-shadow .18s ease-out,background-color .18s ease-out;
}
.cta-form input::placeholder{color:rgba(255,255,255,.6)}
.cta-form input:focus{outline:none;border-color:#fff;background:rgba(255,255,255,.2);box-shadow:0 0 0 3px rgba(255,255,255,.18)}
.cta-note{margin-top:12px;font-size:13px;color:rgba(255,255,255,.68)}

/* 页脚 */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.72);margin-top:96px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .brand{color:#fff;font-size:17.5px}
.site-footer .brand:hover{color:#fff;opacity:.86}
.site-footer .brand-mark{background:#fff;color:var(--c-footer)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);max-width:340px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.contact-line{font-size:14px;line-height:1.9;color:rgba(255,255,255,.7)}
.contact-line strong{display:block;color:#fff;font-family:var(--ff-num);font-weight:600;margin-bottom:6px}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 30px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13.5px;color:rgba(255,255,255,.62);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}

/* 响应式 */
@media (max-width:1279px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;}
  .footer-col.is-secondary{display:none}
}
@media (max-width:1023px){
  :root{--sp-section:64px}
  .nav-links,.nav-actions .btn{display:none}
  .nav-burger{display:flex}
  .cat-hero .inner{grid-template-columns:1fr;gap:28px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;padding:36px}
  .cta-form input{width:100%}
  .cta-form{width:100%;flex-direction:column}
  .cta-form .field,.cta-form .btn{width:100%}
}
@media (max-width:767px){
  :root{--sp-section:48px}
  body{font-size:16px;line-height:1.85}
  .container{padding:0 20px}
  .site-header{padding-top:10px}
  .site-nav{height:56px}
  .site-nav .nav-inner{padding:0 12px 0 16px}
  .brand{font-size:16px}
  .brand-mark{width:26px;height:26px;font-size:13px}
  .cat-facts{grid-template-columns:1fr;gap:12px}
  .feature-body{position:static;padding:24px;background:var(--c-surface);color:var(--c-text)}
  .feature-body h2,.feature-body p{color:var(--c-text)}
  .feature-body p{color:var(--c-body)}
  .feature-overlay{display:none}
  .feature-meta .time{color:var(--c-muted)}
  .number-item{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:18px}
  .number-item .time{grid-column:2;margin-top:8px}
  .steps{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .faq-card{padding:4px 18px}
  .faq-card details[open] summary::before{left:-18px}
}
@media (max-width:480px){
  .cat-hero h1{font-size:28px}
  .btn{width:100%}
  .feature-meta{flex-wrap:wrap;gap:10px}
}

/* roulang page: article */
:root{
  --c-primary:#12557A;
  --c-primary-hover:#0D4462;
  --c-primary-active:#0A3A54;
  --c-primary-soft:#E8F1F7;
  --c-primary-line:#C9DEEB;
  --c-accent:#FF6A2B;
  --c-accent-hover:#E85A1C;
  --c-text:#14202B;
  --c-body:#3C4A57;
  --c-muted:#6B7A88;
  --c-line:#E3E9EF;
  --c-bg:#F4F7FA;
  --c-surface:#FFFFFF;
  --c-footer:#0E1F2B;
  --c-success:#1F8A5F;
  --c-warning:#D9822B;
  --c-danger:#C7402F;
  --w-container:1240px;
  --r-card:14px;
  --r-media:12px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:6px;
  --sh-sm:0 1px 2px rgba(18,32,43,.06);
  --sh-card:0 8px 24px -12px rgba(18,32,43,.18),0 2px 6px rgba(18,32,43,.05);
  --sh-hover:0 16px 32px -14px rgba(18,32,43,.26);
  --sh-nav:0 10px 30px -18px rgba(18,32,43,.28);
  --ff-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --ff-num:Inter,"Roboto Mono",ui-monospace,SFMono-Regular,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--ff-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none}
a:hover{color:var(--c-primary-hover)}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:600;line-height:1.35}
p{margin:0}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{width:min(var(--w-container),100%);margin-inline:auto;padding-inline:32px}
.num{font-family:var(--ff-num);font-variant-numeric:tabular-nums}

/* ---------- 悬浮胶囊导航 ---------- */
.site-header{position:sticky;top:0;z-index:900;background:transparent}
.site-header.is-stuck{background:linear-gradient(180deg,rgba(244,247,250,.97) 0%,rgba(244,247,250,.97) 68%,rgba(244,247,250,0) 100%)}
.site-nav{
  position:relative;
  width:min(var(--w-container),calc(100% - 32px));
  margin:16px auto 0;
  background:rgba(255,255,255,.94);
  border:1px solid var(--c-line);
  border-radius:999px;
  box-shadow:var(--sh-nav);
  transition:box-shadow .18s ease-out,background .18s ease-out;
}
.site-header.is-stuck .site-nav{background:rgba(255,255,255,.99);box-shadow:var(--sh-card)}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px;padding:0 12px 0 20px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--c-primary);white-space:nowrap}
.brand:hover{color:var(--c-primary-hover)}
.brand-mark{
  width:32px;height:32px;flex:0 0 32px;border-radius:9px;
  background:var(--c-primary);color:#fff;
  display:grid;place-items:center;font-size:16px;font-weight:700;
  font-family:var(--ff-num);
}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:999px;
  color:var(--c-body);font-size:15px;font-weight:500;
  transition:color .18s ease-out,background .18s ease-out;
}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-links a.is-active{color:var(--c-primary);font-weight:600}
.nav-links a.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;
  width:18px;height:2px;border-radius:2px;background:var(--c-primary);
  transform:translateX(-50%);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-burger{
  display:none;width:44px;height:44px;padding:0;
  background:#fff;border:1px solid var(--c-line);border-radius:999px;
  cursor:pointer;position:relative;
}
.nav-burger span{
  position:absolute;left:13px;width:18px;height:2px;border-radius:2px;
  background:var(--c-primary);transition:transform .2s ease-out,opacity .2s ease-out;
}
.nav-burger span:nth-child(1){top:16px}
.nav-burger span:nth-child(2){top:21px}
.nav-burger span:nth-child(3){top:26px}
body.menu-open .nav-burger span:nth-child(1){transform:translateY(5px) rotate(45deg)}
body.menu-open .nav-burger span:nth-child(2){opacity:0}
body.menu-open .nav-burger span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;line-height:1;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:none}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff}
.btn-primary:active{background:var(--c-primary-active)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:var(--c-accent-hover);color:#fff}
.btn-outline{background:#fff;border-color:var(--c-line);color:var(--c-primary)}
.btn-outline:hover{border-color:var(--c-primary);background:var(--c-primary-soft);color:var(--c-primary-hover)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);border-color:#fff;color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{
  background:#EEF3F7;color:var(--c-muted);border-color:var(--c-line);
  cursor:not-allowed;transform:none;box-shadow:none;
}
.text-link{color:var(--c-primary);font-weight:500;font-size:14px;border-bottom:2px solid transparent;transition:border-color .18s ease-out,color .18s ease-out}
.text-link:hover{border-bottom-color:var(--c-primary);color:var(--c-primary-hover)}

/* ---------- 标签 / 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 10px;border-radius:var(--r-badge);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:13px;font-weight:500;line-height:1.4;
}
.badge-dark{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.3)}
.badge-accent{background:transparent;border:1px solid var(--c-accent);color:var(--c-accent);font-weight:600}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;height:34px;padding:0 14px;
  border:1px solid var(--c-line);border-radius:999px;background:#fff;
  font-size:13px;color:var(--c-body);transition:all .18s ease-out;
}
.tag:hover{border-color:var(--c-primary);background:var(--c-primary-soft);color:var(--c-primary)}

/* ---------- 文章头部 ---------- */
.article-head{
  position:relative;
  margin-top:20px;
  padding:52px 0 44px;
  color:#fff;
  background-image:linear-gradient(100deg,rgba(11,42,61,.92) 0%,rgba(11,42,61,.72) 46%,rgba(11,42,61,.42) 100%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.7)}
.crumbs a{color:#fff;opacity:.88}
.crumbs a:hover{opacity:1;text-decoration:underline}
.crumbs .sep{opacity:.5}
.crumbs .current{color:rgba(255,255,255,.76);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head h1{
  margin-top:18px;max-width:880px;
  font-size:clamp(28px,3.6vw,38px);line-height:1.35;font-weight:700;color:#fff;
}
.article-meta{
  display:flex;align-items:center;gap:10px 18px;flex-wrap:wrap;
  margin-top:22px;padding-top:18px;
  border-top:1px solid rgba(255,255,255,.18);
  font-size:14px;color:rgba(255,255,255,.8);
}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta .num{color:#fff}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 320px;
  gap:48px;
  align-items:start;
  padding-block:48px 8px;
}
.article-main{min-width:0}
.article-cover{
  margin:0 0 34px;
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-card);
  background:var(--c-surface);
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-content{max-width:800px;font-size:17px;line-height:1.9;color:var(--c-body)}
.article-content > *:first-child{margin-top:0}
.article-content h2{
  position:relative;margin:40px 0 14px;padding-left:16px;
  font-size:clamp(22px,2.3vw,28px);line-height:1.4;color:var(--c-text);
}
.article-content h2::before{
  content:"";position:absolute;left:0;top:.24em;bottom:.24em;
  width:4px;border-radius:3px;background:var(--c-primary);
}
.article-content h3{margin:30px 0 12px;font-size:20px;color:var(--c-primary)}
.article-content h4{margin:24px 0 10px;font-size:17px;color:var(--c-text)}
.article-content p{margin:0 0 20px}
.article-content ul,.article-content ol{margin:0 0 20px;padding-left:26px}
.article-content li{margin-bottom:10px;line-height:1.85}
.article-content ul li::marker{color:var(--c-primary)}
.article-content ol li::marker{color:var(--c-primary);font-family:var(--ff-num);font-weight:600}
.article-content blockquote{
  margin:24px 0;padding:20px 22px;
  background:var(--c-bg);border-left:3px solid var(--c-primary);
  border-radius:0 var(--r-media) var(--r-media) 0;color:var(--c-text);
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content figure{margin:26px 0}
.article-content img{border-radius:var(--r-media);margin:0 auto}
.article-content figcaption{margin-top:10px;font-size:13px;color:var(--c-muted);text-align:center}
.article-content a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px}
.article-content a:hover{color:var(--c-accent)}
.article-content table{
  width:100%;margin:24px 0;border-collapse:collapse;
  font-size:15px;border:1px solid var(--c-line);
  border-radius:var(--r-media);overflow:hidden;
}
.article-content th,.article-content td{padding:12px 16px;border-bottom:1px solid var(--c-line);text-align:left}
.article-content thead th{background:var(--c-primary-soft);color:var(--c-text);font-weight:600}
.article-content tbody tr:nth-child(even){background:var(--c-bg)}
.article-content tbody td:first-child{font-weight:600;color:var(--c-text)}
.article-content code{
  padding:2px 6px;border-radius:6px;background:#F7FAFC;
  font-family:var(--ff-num);font-size:14px;color:var(--c-text);
}
.article-content pre{
  margin:22px 0;padding:18px;border-radius:var(--r-input);
  background:#F7FAFC;border:1px solid var(--c-line);overflow:auto;
}
.article-content pre code{background:none;padding:0}
.article-content hr{margin:34px 0;border:0;border-top:1px solid var(--c-line)}

/* ---------- 空态 ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  min-height:320px;padding:48px 24px;text-align:center;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-sm);
}
.empty-state svg{width:48px;height:48px;color:rgba(18,85,122,.25);margin-bottom:16px}
.empty-title{font-size:16px;font-weight:600;color:var(--c-text)}
.empty-desc{font-size:13px;color:var(--c-muted);margin:8px 0 20px;max-width:36ch;line-height:1.8}

/* ---------- 侧栏 ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);box-shadow:var(--sh-card);padding:20px;
}
.side-card h2{font-size:16px;font-weight:600;color:var(--c-text);margin-bottom:14px}
.side-list{list-style:none;padding:0;display:flex;flex-direction:column}
.side-list li{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--c-line)}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list li:first-child{padding-top:0}
.side-index{
  flex:0 0 22px;font-family:var(--ff-num);font-size:14px;font-weight:600;
  color:var(--c-primary);line-height:1.6;
}
.side-list a{display:block;font-size:14px;color:var(--c-text);line-height:1.6;font-weight:500}
.side-list a:hover{color:var(--c-primary)}
.side-list .side-desc{display:block;margin-top:4px;font-size:12px;color:var(--c-muted);font-weight:400}
.side-picks{display:flex;flex-direction:column;gap:14px}
.pick{display:flex;gap:12px;align-items:center}
.pick img{
  width:88px;height:64px;flex:0 0 88px;object-fit:cover;
  border-radius:10px;background:var(--c-bg);
}
.pick .pick-title{font-size:14px;font-weight:600;color:var(--c-text);line-height:1.5}
.pick:hover .pick-title{color:var(--c-primary)}

/* ---------- 文末导航 ---------- */
.post-nav{padding-block:40px 8px}
.post-nav h2{font-size:20px;margin-bottom:18px}
.post-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.post-card{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s;
}
.post-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);border-color:var(--c-primary-line)}
.post-card .post-label{font-size:13px;color:var(--c-muted);display:block;margin-bottom:6px}
.post-card .post-title{font-size:16px;font-weight:600;color:var(--c-text);line-height:1.5}
.post-card .arrow{
  width:44px;height:44px;flex:0 0 44px;border-radius:999px;
  border:1px solid var(--c-line);display:grid;place-items:center;
  color:var(--c-primary);transition:background .18s,color .18s,border-color .18s;
}
.post-card:hover .arrow{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}

/* ---------- 相关推荐 ---------- */
.related{padding-block:56px 8px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.section-head h2{font-size:clamp(22px,2.4vw,28px)}
.section-head .section-desc{font-size:14px;color:var(--c-muted);margin-top:8px;max-width:52ch}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:20px;
  transition:box-shadow .18s ease-out,transform .18s ease-out;
}
.card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px)}
.card figure{margin:0 0 16px;border-radius:var(--r-media);overflow:hidden;background:var(--c-bg)}
.card figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
.card h3{font-size:17px;line-height:1.5;margin-bottom:10px}
.card p{font-size:14px;line-height:1.8;color:var(--c-body);margin-bottom:16px}
.card .card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  gap:12px;padding-top:14px;border-top:1px solid var(--c-line);
  font-size:13px;color:var(--c-muted);
}

/* ---------- CTA ---------- */
.cta-band{padding-block:72px 0}
.cta-inner{
  background:var(--c-primary);color:#fff;
  border-radius:20px;padding:48px;
  display:grid;grid-template-columns:1fr 420px;gap:40px;align-items:center;
}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.4vw,28px);margin-bottom:12px}
.cta-inner p{color:rgba(255,255,255,.8);font-size:15px;line-height:1.85;max-width:46ch}
.cta-form{display:flex;gap:12px;flex-wrap:wrap}
.cta-form label{display:block;font-size:13px;font-weight:500;color:rgba(255,255,255,.85);margin-bottom:8px}
.field{flex:1 1 220px;min-width:0}
.field input{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-input);
  border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.1);
  color:#fff;transition:border-color .18s,box-shadow .18s,background .18s;
}
.field input::placeholder{color:rgba(255,255,255,.6)}
.field input:focus{
  outline:none;border-color:#fff;background:rgba(255,255,255,.16);
  box-shadow:0 0 0 3px rgba(255,255,255,.18);
}
.cta-form .btn{margin-top:29px}
.cta-note{margin-top:14px;font-size:13px;color:rgba(255,255,255,.66)}
.form-tip{margin-top:12px;font-size:13px;color:#fff;display:none}
.form-tip.is-on{display:block}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:88px;padding:64px 0 28px;
  background:var(--c-footer);color:rgba(255,255,255,.72);
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:40px}
.footer-brand .brand{color:#fff;font-size:18px}
.footer-brand .brand:hover{color:#fff}
.footer-brand .brand-mark{background:#fff;color:var(--c-primary)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);max-width:38ch}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s ease-out}
.footer-col a:hover{color:#fff}
.contact-line{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62)}
.contact-line strong{display:block;color:#fff;font-weight:600;font-family:var(--ff-num);margin-bottom:4px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.82)}
.footer-bottom a:hover{color:#fff;text-decoration:underline}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1023px){
  .container{padding-inline:24px}
  .nav-links{
    position:fixed;inset:0;z-index:1001;
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    margin:0;padding:88px 20px 140px;
    background:#fff;transform:translateX(-100%);
    transition:transform .28s ease-out;overflow-y:auto;
  }
  .nav-links a{
    height:48px;padding:0 4px;border-radius:0;font-size:16px;
    border-bottom:1px solid var(--c-line);background:none;
  }
  .nav-links a:hover{background:none;color:var(--c-primary)}
  .nav-links a.is-active::after{display:none}
  body.menu-open{overflow:hidden}
  body.menu-open .nav-links{transform:translateX(0)}
  .nav-actions .btn{display:none}
  body.menu-open .nav-actions{
    position:fixed;left:0;right:0;bottom:0;z-index:1002;
    display:flex;gap:12px;padding:14px 20px calc(14px + env(safe-area-inset-bottom));
    background:#fff;border-top:1px solid var(--c-line);
  }
  body.menu-open .nav-actions .btn{display:inline-flex;flex:1}
  body.menu-open .nav-burger{position:fixed;top:20px;right:20px;z-index:1003}
  .nav-burger{display:inline-flex}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px}
  .article-side{position:static}
  .cta-inner{grid-template-columns:1fr;padding:36px;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-col.is-secondary{display:none}
}
@media (max-width:767px){
  .container{padding-inline:20px}
  .site-nav{width:calc(100% - 24px);margin-top:12px}
  .nav-inner{height:56px;padding:0 8px 0 14px;gap:10px}
  .brand{font-size:16px}
  .brand-mark{width:28px;height:28px;flex:0 0 28px;font-size:14px;border-radius:8px}
  .article-head{padding:34px 0 32px;margin-top:12px}
  .article-head h1{font-size:26px}
  .crumbs .home{display:none}
  .crumbs .sep.first{display:none}
  .article-layout{padding-block:32px 0}
  .article-content{font-size:16px;line-height:1.85}
  .article-content h2{margin-top:32px}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .post-grid{grid-template-columns:minmax(0,1fr)}
  .cta-band{padding-block:52px 0}
  .cta-inner{padding:28px 22px;border-radius:16px}
  .cta-form .btn{margin-top:0;width:100%}
  .footer-grid{grid-template-columns:1fr}
  .post-nav,.related{padding-block:36px 0}
}
@media (max-width:480px){
  .article-meta{font-size:13px;gap:8px 14px}
  .btn{height:44px}
}

/* roulang page: category2 */
:root{
  --c-primary:#12557A;
  --c-primary-hover:#0D4462;
  --c-primary-active:#0A3A54;
  --c-primary-soft:#E8F1F7;
  --c-primary-line:#C9DEEB;
  --c-accent:#FF6A2B;
  --c-accent-hover:#E85A1C;
  --c-text:#14202B;
  --c-body:#3C4A57;
  --c-muted:#6B7A88;
  --c-line:#E3E9EF;
  --c-bg:#F4F7FA;
  --c-surface:#FFFFFF;
  --c-footer:#0E1F2B;
  --c-success:#1F8A5F;
  --c-warning:#D9822B;
  --c-danger:#C7402F;
  --sh-sm:0 1px 2px rgba(18,32,43,.06);
  --sh-card:0 8px 24px -12px rgba(18,32,43,.18),0 2px 6px rgba(18,32,43,.05);
  --sh-hover:0 16px 32px -14px rgba(18,32,43,.26);
  --sh-nav:0 10px 30px -18px rgba(18,32,43,.28);
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --w-container:1240px;
  --ff-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  --ff-num:Inter,"Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--ff-sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color 180ms ease-out,background-color 180ms ease-out,border-color 180ms ease-out}
a:hover{color:var(--c-primary-hover)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:600;letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.container{max-width:var(--w-container);margin:0 auto;padding:0 32px}

/* ---------- 顶部胶囊导航 ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;padding:16px;pointer-events:none}
.site-nav{
  pointer-events:auto;
  max-width:var(--w-container);
  margin:0 auto;
  background:rgba(255,255,255,.94);
  border:1px solid var(--c-line);
  border-radius:999px;
  box-shadow:var(--sh-nav);
  transition:box-shadow 180ms ease-out,background-color 180ms ease-out;
}
.site-nav.is-stuck{box-shadow:var(--sh-card);background:rgba(255,255,255,.99)}
.nav-inner{display:flex;align-items:center;gap:20px;height:64px;padding:0 12px 0 22px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:var(--c-primary);white-space:nowrap}
.brand:hover{color:var(--c-primary-hover)}
.brand-mark{
  width:32px;height:32px;border-radius:10px;background:var(--c-primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;font-family:var(--ff-num);
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;display:inline-block;padding:10px 14px;font-size:15px;color:var(--c-body);border-radius:999px;
}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-links a.is-active{color:var(--c-primary);font-weight:600}
.nav-links a.is-active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:2px;width:18px;height:2px;border-radius:999px;background:var(--c-primary);
}
.nav-actions{display:flex;align-items:center;gap:10px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:500;cursor:pointer;white-space:nowrap;
  transition:background-color 180ms ease-out,color 180ms ease-out,border-color 180ms ease-out,transform 180ms ease-out,box-shadow 180ms ease-out;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.btn-primary:hover{background:var(--c-primary-hover);border-color:var(--c-primary-hover);color:#fff;transform:translateY(-1px)}
.btn-primary:active{background:var(--c-primary-active);border-color:var(--c-primary-active);transform:none}
.btn-accent{background:var(--c-accent);color:#fff;border-color:var(--c-accent)}
.btn-accent:hover{background:var(--c-accent-hover);border-color:var(--c-accent-hover);color:#fff;transform:translateY(-1px)}
.btn-accent:active{background:var(--c-accent-hover);transform:none}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-line)}
.btn-outline:hover{border-color:var(--c-primary);background:var(--c-primary-soft);color:var(--c-primary)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn:disabled,.btn[disabled]{background:#EEF3F7;color:var(--c-muted);border-color:#E3E9EF;cursor:not-allowed;transform:none}
.nav-burger{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);background:#fff;border-radius:999px;
  padding:0;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-primary);transition:transform 180ms ease-out}
.nav-burger:hover{border-color:var(--c-primary-line);background:var(--c-primary-soft)}
.nav-drawer{
  position:fixed;inset:0;z-index:130;background:#fff;display:flex;flex-direction:column;
  padding:28px 20px 20px;transform:translateX(100%);visibility:hidden;
  transition:transform 220ms ease-out,visibility 220ms ease-out;overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0);visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--c-line)}
.drawer-close{width:44px;height:44px;border-radius:999px;border:1px solid var(--c-line);background:#fff;font-size:20px;color:var(--c-primary);cursor:pointer;line-height:1}
.drawer-links{display:flex;flex-direction:column;margin-top:8px;flex:1}
.drawer-links a{
  display:flex;align-items:center;min-height:48px;padding:0 4px;font-size:16px;color:var(--c-text);
  border-bottom:1px solid var(--c-line);
}
.drawer-links a:hover,.drawer-links a.is-active{color:var(--c-primary);background:var(--c-primary-soft)}
.drawer-foot{position:sticky;bottom:0;padding-top:16px;background:#fff}
.drawer-foot .btn{width:100%}
.drawer-foot p{margin-top:12px;font-size:13px;color:var(--c-muted);text-align:center}

/* ---------- 分类头部 ---------- */
.cat-hero{
  background:#EDF4F9;
  border-bottom:1px solid var(--c-line);
  padding:140px 0 60px;
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:22px}
.breadcrumb a{color:var(--c-primary)}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb .current{color:var(--c-muted)}
.cat-hero h1{font-size:clamp(34px,4vw,44px);line-height:1.25;font-weight:700;max-width:820px}
.cat-lead{margin-top:18px;max-width:720px;font-size:17px;color:var(--c-body);line-height:1.9}
.cat-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.cat-tags li{
  padding:7px 16px;border-radius:999px;background:#fff;border:1px solid var(--c-primary-line);
  color:var(--c-primary);font-size:13.5px;font-weight:500;
}
.cat-meta-row{display:flex;flex-wrap:wrap;gap:28px;margin-top:28px}
.cat-stat{display:flex;flex-direction:column;gap:2px}
.cat-stat strong{font-family:var(--ff-num);font-size:22px;color:var(--c-primary);font-weight:700}
.cat-stat span{font-size:13px;color:var(--c-muted)}

/* ---------- 通用板块 ---------- */
.section{padding:76px 0}
.section-alt{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:36px}
.section-head .lead-block{max-width:720px}
.section-num{
  display:inline-block;font-family:var(--ff-num);font-size:12px;font-weight:600;letter-spacing:1px;
  color:var(--c-primary);background:var(--c-primary-soft);border-radius:6px;padding:4px 10px;margin-bottom:14px;
}
.section-head h2{font-size:clamp(26px,3vw,32px);line-height:1.35}
.section-head p{margin-top:12px;font-size:15.5px;color:var(--c-body)}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:500;color:var(--c-primary)}
.link-more:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}

/* ---------- 卡片栅格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;display:flex;flex-direction:column;
  transition:box-shadow 180ms ease-out,transform 180ms ease-out;
}
.card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px)}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EEF3F7}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.badge{
  display:inline-flex;align-items:center;padding:3px 10px;border-radius:6px;
  background:var(--c-primary-soft);color:var(--c-primary);font-size:12.5px;font-weight:500;
}
.badge-outline{
  background:#fff;border:1px solid var(--c-accent);color:var(--c-accent);border-radius:6px;
  padding:2px 8px;font-size:12px;font-weight:500;
}
.time{font-family:var(--ff-num);font-size:13px;color:var(--c-muted)}
.card-title{font-size:19px;line-height:1.5;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{
  font-size:15px;color:var(--c-body);line-height:1.85;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);display:flex;align-items:center;justify-content:space-between;gap:12px}

/* ---------- 对照表 ---------- */
.table-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:8px;overflow:hidden;
}
.table-scroll{overflow-x:auto}
.compare-table{min-width:640px;font-size:15px}
.compare-table thead th{
  text-align:left;font-size:13.5px;font-weight:600;color:var(--c-primary);
  background:var(--c-primary-soft);padding:16px 20px;border-bottom:1px solid var(--c-primary-line);
  white-space:nowrap;
}
.compare-table thead th:first-child{border-top-left-radius:10px}
.compare-table thead th:last-child{border-top-right-radius:10px}
.compare-table tbody th{
  text-align:left;font-weight:600;color:var(--c-text);padding:16px 20px;border-bottom:1px solid var(--c-line);
  background:#fff;white-space:nowrap;
}
.compare-table tbody td{padding:16px 20px;border-bottom:1px solid var(--c-line);color:var(--c-body);font-family:var(--ff-num)}
.compare-table tbody tr:nth-child(even) th,.compare-table tbody tr:nth-child(even) td{background:var(--c-bg)}
.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:0}
.table-note{margin-top:14px;font-size:13px;color:var(--c-muted)}

/* ---------- 图文非对称 ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center}
.split-list{display:flex;flex-direction:column;gap:26px;margin-top:8px}
.split-item{display:grid;grid-template-columns:56px 1fr;gap:16px;align-items:start}
.split-item .num{font-family:var(--ff-num);font-size:26px;font-weight:700;color:var(--c-primary-line);line-height:1.2}
.split-item h3{font-size:19px;margin-bottom:8px}
.split-item p{font-size:15px;color:var(--c-body)}
.split-media{
  border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--sh-card);aspect-ratio:16/9;background:#EEF3F7;
}
.split-media img{width:100%;height:100%;object-fit:cover}
.quote-block{
  margin-top:28px;border-left:3px solid var(--c-primary);background:var(--c-bg);
  padding:20px 22px;border-radius:0 10px 10px 0;font-size:15px;color:var(--c-body);
}
.quote-block cite{display:block;margin-top:10px;font-size:13px;color:var(--c-muted);font-style:normal}

/* ---------- FAQ ---------- */
.faq-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 26px;font-size:16px;font-weight:600;color:var(--c-text);
  transition:background-color 180ms ease-out;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--c-primary-soft)}
.faq-item summary .icon{
  flex:0 0 auto;width:20px;height:20px;position:relative;transition:transform 180ms ease-out;
}
.faq-item summary .icon::before,
.faq-item summary .icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
}
.faq-item summary .icon::before{left:9px;top:3px;width:2px;height:14px}
.faq-item summary .icon::after{left:3px;top:9px;width:14px;height:2px}
.faq-item[open] summary .icon{transform:rotate(90deg)}
.faq-item[open] summary{border-left:3px solid var(--c-primary)}
.faq-item .faq-answer{padding:0 26px 24px;font-size:15px;line-height:1.85;color:var(--c-body);max-width:900px}

/* ---------- CTA ---------- */
.cta-band{padding:0 0 76px}
.cta-inner{
  background:var(--c-primary);border-radius:20px;padding:48px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-copy h2{color:#fff;font-size:clamp(24px,2.6vw,30px);line-height:1.35}
.cta-copy p{margin-top:12px;color:rgba(255,255,255,.82);font-size:15.5px;max-width:520px}
.cta-form{display:flex;gap:12px;flex:0 0 auto}
.cta-form input{
  height:48px;width:280px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.35);
  background:rgba(255,255,255,.12);color:#fff;padding:0 16px;font-size:15px;font-family:inherit;
  transition:border-color 180ms ease-out,box-shadow 180ms ease-out;
}
.cta-form input::placeholder{color:rgba(255,255,255,.7)}
.cta-form input:focus{outline:none;border-color:#fff;box-shadow:0 0 0 3px rgba(255,255,255,.22)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.72);padding:64px 0 28px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{color:#fff;font-size:18px}
.footer-brand .brand-mark{background:#fff;color:var(--c-footer)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.7);max-width:320px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px}
.footer-col a:hover{color:#fff}
.contact-line{line-height:1.9;color:rgba(255,255,255,.7)}
.contact-line strong{display:block;color:#fff;font-weight:600;font-family:var(--ff-num)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.62);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .split{grid-template-columns:1fr;gap:32px}
  .cta-form input{width:240px}
}
@media (max-width:1023px){
  .nav-links,.nav-actions .btn{display:none}
  .nav-burger{display:flex}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .section{padding:60px 0}
  .cta-inner{padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .cat-hero{padding:118px 0 44px}
  .cat-hero h1{font-size:30px}
  .cat-lead{font-size:15.5px}
  .cat-meta-row{gap:20px}
  .card-grid{grid-template-columns:1fr;gap:20px}
  .section{padding:48px 0}
  .section-head{margin-bottom:26px}
  .faq-item summary{padding:18px 20px;font-size:15.5px}
  .faq-item .faq-answer{padding:0 20px 20px}
  .cta-band{padding:0 0 48px}
  .cta-inner{padding:28px 22px;border-radius:20px}
  .cta-form{flex-direction:column;width:100%}
  .cta-form input{width:100%}
  .cta-form .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-col.is-secondary{display:none}
  .split-item{grid-template-columns:44px 1fr;gap:12px}
  .split-item .num{font-size:22px}
  .breadcrumb{flex-wrap:wrap}
}
@media (max-width:480px){
  .cat-hero h1{font-size:27px}
  .btn{height:44px;padding:0 18px}
  .nav-inner{height:56px;padding:0 8px 0 16px}
}

/* roulang page: category3 */
:root{
  --c-primary:#12557A;
  --c-primary-hover:#0D4462;
  --c-primary-active:#0A3A54;
  --c-primary-soft:#E8F1F7;
  --c-primary-line:#C9DEEB;
  --c-accent:#FF6A2B;
  --c-accent-hover:#E85A1C;
  --c-text:#14202B;
  --c-body:#3C4A57;
  --c-muted:#6B7A88;
  --c-line:#E3E9EF;
  --c-bg:#F4F7FA;
  --c-surface:#FFFFFF;
  --c-footer:#0E1F2B;
  --c-success:#1F8A5F;
  --c-warning:#D9822B;
  --c-danger:#C7402F;
  --ff-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --ff-num:Inter,"Roboto Mono",ui-monospace,monospace;
  --w-container:1240px;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-badge:6px;
  --r-pill:999px;
  --r-cta:20px;
  --sh-sm:0 1px 2px rgba(18,32,43,.06);
  --sh-card:0 8px 24px -12px rgba(18,32,43,.18),0 2px 6px rgba(18,32,43,.05);
  --sh-hover:0 16px 32px -14px rgba(18,32,43,.26);
  --sh-nav:0 10px 30px -18px rgba(18,32,43,.28);
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--ff-sans);
  font-size:16.5px;
  line-height:1.88;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease)}
a:hover{color:var(--c-primary-hover)}
button,input{font-family:inherit;font-size:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1,h2,h3,h4{color:var(--c-text)}
h1{font-size:clamp(34px,4vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.2px}
h2{font-size:clamp(26px,3vw,32px);line-height:1.35;font-weight:600}
h3{font-size:clamp(19px,2vw,22px);line-height:1.5;font-weight:600}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{width:100%;max-width:var(--w-container);margin:0 auto;padding:0 32px}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.num{font-family:var(--ff-num);font-variant-numeric:tabular-nums}
.muted{color:var(--c-muted)}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;padding:16px 0 0;pointer-events:none}
.site-nav{
  position:relative;
  width:min(1240px,calc(100% - 32px));
  margin:0 auto;
  background:rgba(255,255,255,.94);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-nav);
  pointer-events:auto;
  transition:box-shadow var(--ease),background-color var(--ease);
}
.site-nav.is-stuck{background:rgba(255,255,255,.99);box-shadow:var(--sh-card)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px;padding:0 14px 0 20px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--c-primary);letter-spacing:.2px;white-space:nowrap}
.brand:hover{color:var(--c-primary-hover)}
.brand-mark{
  width:30px;height:30px;flex:0 0 30px;border-radius:9px;background:var(--c-primary);color:#fff;
  display:grid;place-items:center;font-family:var(--ff-num);font-size:15px;font-weight:700;line-height:1
}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;display:inline-flex;align-items:center;height:38px;padding:0 13px;font-size:15px;color:var(--c-body);border-radius:var(--r-pill);transition:color var(--ease),background-color var(--ease)}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-links a.is-active{color:var(--c-primary);font-weight:600}
.nav-links a.is-active::after{content:"";position:absolute;left:50%;bottom:4px;transform:translateX(-50%);width:18px;height:2px;border-radius:2px;background:var(--c-primary)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-burger{display:none;width:44px;height:44px;border:1px solid var(--c-line);background:#fff;border-radius:12px;cursor:pointer;padding:0;place-items:center;gap:4px}
.nav-burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:background-color var(--ease)}
.nav-burger:hover{border-color:var(--c-primary-line);background:var(--c-primary-soft)}
.nav-burger:hover span{background:var(--c-primary)}

/* ---------- 移动抽屉 ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:90;background:#fff;display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-10px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.nav-drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--c-line)}
.drawer-close{width:44px;height:44px;border:1px solid var(--c-line);border-radius:12px;background:#fff;color:var(--c-text);font-size:20px;line-height:1;cursor:pointer}
.drawer-close:hover{background:var(--c-primary-soft);border-color:var(--c-primary-line)}
.drawer-body{flex:1;overflow-y:auto;padding:6px 20px}
.drawer-link{display:flex;align-items:center;justify-content:space-between;height:48px;font-size:16px;color:var(--c-text);border-bottom:1px solid var(--c-line)}
.drawer-link:last-child{border-bottom:0}
.drawer-link.is-active{color:var(--c-primary);font-weight:600}
.drawer-link::after{content:"›";color:var(--c-muted);font-size:20px;line-height:1}
.drawer-foot{padding:16px 20px 24px;border-top:1px solid var(--c-line)}
.drawer-foot p{margin-top:12px;font-size:13px;color:var(--c-muted);text-align:center}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff}
.btn-primary:active{background:var(--c-primary-active)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:var(--c-accent-hover);color:#fff}
.btn-outline{background:#fff;border-color:var(--c-line);color:var(--c-primary)}
.btn-outline:hover{border-color:var(--c-primary);background:var(--c-primary-soft);color:var(--c-primary)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-lg{height:48px;padding:0 26px}
.btn-block{width:100%}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.btn[disabled],.btn.is-disabled{background:#EEF3F7;color:var(--c-muted);border-color:var(--c-line);box-shadow:none;cursor:not-allowed;transform:none}
.link-more{font-size:14px;font-weight:500;display:inline-flex;align-items:center;gap:6px;border-bottom:2px solid transparent;padding-bottom:2px}
.link-more:hover{border-bottom-color:var(--c-primary)}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted)}
.breadcrumb a{color:var(--c-primary)}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb .sep{color:var(--c-line)}
.breadcrumb .current{color:var(--c-muted)}

/* ---------- 分类头部 ---------- */
.cat-hero{
  position:relative;padding:30px 0 46px;min-height:262px;
  border-bottom:1px solid var(--c-line);
  background:linear-gradient(180deg,rgba(255,255,255,.95),rgba(244,247,250,.99)),url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
}
.cat-hero-inner{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:36px;align-items:end;margin-top:26px}
.cat-hero h1{margin-top:0}
.cat-lede{margin-top:14px;max-width:640px;font-size:17px;color:var(--c-body)}
.cat-side-note{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:20px 22px;
}
.cat-side-note h2{font-size:15px;font-weight:600;color:var(--c-primary)}
.cat-side-note dl{display:grid;grid-template-columns:auto 1fr;gap:8px 14px;margin-top:12px;font-size:14px}
.cat-side-note dt{color:var(--c-muted)}
.cat-side-note dd{margin:0;color:var(--c-text);font-family:var(--ff-num);font-weight:500}
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);font-size:13px;color:var(--c-body);
  transition:background-color var(--ease),border-color var(--ease),color var(--ease);
}
.chip:hover{background:var(--c-primary-soft);border-color:var(--c-primary-line);color:var(--c-primary)}
.chip.is-current{background:var(--c-primary);border-color:var(--c-primary);color:#fff}

/* ---------- 通用板块标题 ---------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding-bottom:20px;border-bottom:1px solid var(--c-line);margin-bottom:38px}
.eyebrow{display:block;font-family:var(--ff-num);font-size:12px;letter-spacing:.14em;color:var(--c-primary);text-transform:uppercase;margin-bottom:10px}
.section-head p{max-width:560px;font-size:15px;color:var(--c-muted);margin-top:8px}
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-badge);
  background:var(--c-primary-soft);color:var(--c-primary);font-size:13px;font-weight:500;
}
.badge--accent{background:transparent;border:1px solid var(--c-accent);color:var(--c-accent);border-radius:var(--r-badge)}

/* ---------- 数据速览 ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.stat-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);
  padding:24px;transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.stat-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);border-color:var(--c-primary-line)}
.stat-num{font-family:var(--ff-num);font-size:34px;font-weight:700;line-height:1.1;color:var(--c-primary)}
.stat-num.is-accent{color:var(--c-accent)}
.stat-num small{font-size:14px;font-weight:500;color:var(--c-muted);margin-left:4px}
.stat-title{margin-top:10px;font-size:16px;font-weight:600;color:var(--c-text)}
.stat-text{margin-top:6px;font-size:14px;color:var(--c-muted);line-height:1.7}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;padding:6px 0 6px 0}
.timeline::before{content:"";position:absolute;left:5px;top:14px;bottom:14px;width:2px;background:var(--c-primary-line);border-radius:2px}
.tl-item{position:relative;padding-left:42px;margin-bottom:40px}
.tl-item:last-child{margin-bottom:0}
.tl-dot{
  position:absolute;left:0;top:26px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:2px solid var(--c-primary);z-index:1;
}
.tl-item.is-current .tl-dot{background:var(--c-accent);border-color:var(--c-accent)}
.tl-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);
  padding:22px 26px;transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.tl-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);border-color:var(--c-primary-line)}
.tl-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.tl-time{font-family:var(--ff-num);font-size:13px;letter-spacing:.04em;color:var(--c-accent);font-weight:500}
.tl-title{margin:10px 0 8px}
.tl-desc{font-size:15.5px;color:var(--c-body);max-width:760px}
.tl-foot{margin-top:14px;font-size:13px;color:var(--c-muted);font-family:var(--ff-num)}

/* ---------- 分隔提示条 ---------- */
.note-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  background:var(--c-primary-soft);border:1px solid var(--c-primary-line);border-radius:var(--r-card);
  padding:16px 22px;margin-top:34px;font-size:14.5px;color:var(--c-primary-active);
}
.note-bar strong{font-weight:600}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:44px;align-items:center}
.figure-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);padding:14px}
.figure-card .frame{aspect-ratio:16/9;border-radius:var(--r-img);overflow:hidden;background:#EEF3F7}
.figure-card img{width:100%;height:100%;object-fit:cover}
.figure-card figcaption{margin-top:12px;font-size:13px;color:var(--c-muted);text-align:center}
.check-list{margin-top:22px;display:grid;gap:14px}
.check-list li{position:relative;padding-left:28px;font-size:15.5px}
.check-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:10px;height:10px;border-radius:3px;
  background:var(--c-primary-soft);border:1px solid var(--c-primary);
}
.check-list li b{color:var(--c-text);font-weight:600}
.rank-table{width:100%;border-collapse:collapse;background:#fff;font-size:15px}
.rank-wrap{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden;margin-top:26px}
.rank-table th,.rank-table td{padding:14px 20px;text-align:left;border-bottom:1px solid var(--c-line)}
.rank-table th{font-size:13px;font-weight:600;color:var(--c-muted);background:#F7FAFC;letter-spacing:.04em}
.rank-table td:first-child{font-weight:600;color:var(--c-text)}
.rank-table tbody tr:nth-child(even){background:var(--c-bg)}
.rank-table tbody tr:last-child td{border-bottom:0}
.rank-table .val{font-family:var(--ff-num);color:var(--c-text)}

/* ---------- 关联栏目卡 ---------- */
.link-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.link-card{
  display:grid;grid-template-columns:200px minmax(0,1fr);
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);
  overflow:hidden;transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.link-card:hover{box-shadow:var(--sh-hover);transform:translateY(-2px);border-color:var(--c-primary-line)}
.link-card .thumb{aspect-ratio:1/1;background:#EEF3F7}
.link-card .thumb img{width:100%;height:100%;object-fit:cover}
.link-card .body{padding:22px 24px}
.link-card h3{font-size:19px;margin-bottom:8px}
.link-card p{font-size:14.5px;color:var(--c-body)}
.link-card .link-more{margin-top:14px}
.link-wide{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;align-items:center;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);
  padding:24px 26px;margin-top:24px;transition:box-shadow var(--ease),transform var(--ease)
}
.link-wide:hover{box-shadow:var(--sh-hover);transform:translateY(-2px)}
.link-wide p{margin-top:8px;font-size:14.5px;max-width:760px}
.link-wide h3{font-size:19px}

/* ---------- FAQ ---------- */
.faq{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-card);overflow:hidden}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px 20px 26px;font-size:16px;font-weight:600;color:var(--c-text);cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(.5);
  width:3px;height:20px;border-radius:2px;background:var(--c-primary);opacity:0;transition:opacity var(--ease),transform var(--ease)
}
.faq-item summary:hover{background:#F7FAFC}
.faq-item[open] summary::before{opacity:1;transform:translateY(-50%) scaleY(1)}
.faq-icon{width:9px;height:9px;flex:0 0 9px;border-right:2px solid var(--c-muted);border-bottom:2px solid var(--c-muted);transform:rotate(-45deg);transition:transform var(--ease),border-color var(--ease)}
.faq-item[open] .faq-icon{transform:rotate(45deg);border-color:var(--c-primary)}
.faq-body{padding:0 24px 22px 26px;font-size:15px;color:var(--c-body);max-width:900px}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--c-primary);border-radius:var(--r-cta);padding:48px;color:#fff;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,460px);gap:40px;align-items:center;
  box-shadow:var(--sh-card);
}
.cta-band h2{color:#fff}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.82);font-size:15.5px;max-width:520px}
.cta-form .field{margin-bottom:14px}
.cta-form label{display:block;font-size:13px;font-weight:500;color:rgba(255,255,255,.85);margin-bottom:8px}
.cta-form input{
  width:100%;height:48px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.96);color:var(--c-text);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.cta-form input::placeholder{color:var(--c-muted)}
.cta-form input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(255,106,43,.22)}
.form-note{margin-top:12px;font-size:13px;color:rgba(255,255,255,.72)}
.form-note.is-ok{color:#B8F0D5}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.72);margin-top:88px;padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .brand{color:#fff;font-size:17px}
.site-footer .brand-mark{background:rgba(255,255,255,.14)}
.footer-brand p{margin-top:16px;font-size:14px;color:rgba(255,255,255,.72);max-width:320px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff}
.contact-line{font-size:14px;line-height:1.8}
.contact-line strong{display:block;color:#fff;font-family:var(--ff-num);font-size:15px;margin-bottom:6px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.6)
}
.footer-bottom a{color:rgba(255,255,255,.75)}
.footer-bottom a:hover{color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .stat-strip{grid-template-columns:repeat(3,minmax(0,1fr))}
  .cta-band{grid-template-columns:minmax(0,1fr) minmax(0,400px);padding:40px}
}
@media (max-width:1023px){
  .nav-links,.nav-actions .btn{display:none}
  .nav-burger{display:grid}
  .nav-inner{height:56px}
  .section{padding:64px 0}
  .container{padding:0 24px}
  .cat-hero-inner{grid-template-columns:1fr;gap:26px}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split{grid-template-columns:1fr;gap:32px}
  .link-card{grid-template-columns:160px minmax(0,1fr)}
  .cta-band{grid-template-columns:1fr;padding:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:48px 0}
  .cat-hero{min-height:0;padding:24px 0 36px}
  .badge,.chip{font-size:12.5px}
  .stat-strip{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px}
  .link-grid{grid-template-columns:1fr}
  .link-card{grid-template-columns:1fr}
  .link-card .thumb{aspect-ratio:16/9}
  .link-wide{grid-template-columns:1fr}
  .tl-item{padding-left:34px;margin-bottom:32px}
  .tl-card{padding:18px 20px}
  .faq-item summary{padding:18px 18px 18px 20px;font-size:15.5px}
  .faq-body{padding:0 18px 20px 20px}
  .cta-band{padding:28px 22px;border-radius:16px}
  .rank-table th,.rank-table td{padding:12px 14px;font-size:14px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-col.is-secondary{display:none}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
  h1{font-size:30px}
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: category4 */
:root{
  --c-primary:#12557A;
  --c-primary-hover:#0D4462;
  --c-primary-active:#0A3A54;
  --c-primary-soft:#E8F1F7;
  --c-primary-line:#C9DEEB;
  --c-accent:#FF6A2B;
  --c-accent-hover:#E85A1C;
  --c-text:#14202B;
  --c-body:#3C4A57;
  --c-muted:#6B7A88;
  --c-line:#E3E9EF;
  --c-bg:#F4F7FA;
  --c-surface:#FFFFFF;
  --c-footer:#0E1F2B;
  --c-success:#1F8A5F;
  --c-danger:#C7402F;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-badge:6px;
  --sh-sm:0 1px 2px rgba(18,32,43,.06);
  --sh-card:0 8px 24px -12px rgba(18,32,43,.18),0 2px 6px rgba(18,32,43,.05);
  --sh-hover:0 16px 32px -14px rgba(18,32,43,.26);
  --sh-nav:0 10px 30px -18px rgba(18,32,43,.28);
  --w-container:1240px;
  --ff-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --ff-num:Inter,"Roboto Mono",ui-monospace,SFMono-Regular,monospace;
  --t:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--ff-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--c-body);
  background:var(--c-bg);
}
h1,h2,h3,h4{margin:0;color:var(--c-text);font-weight:600;line-height:1.4}
h1{font-size:clamp(34px,3.4vw,44px);line-height:1.25;font-weight:700}
h2{font-size:clamp(26px,2.4vw,32px);line-height:1.35}
h3{font-size:clamp(19px,1.6vw,22px);line-height:1.5}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--c-primary-hover)}
img{max-width:100%;display:block}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
.container{width:100%;max-width:var(--w-container);margin:0 auto;padding:0 32px}
.section{padding:72px 0}
.section-tight{padding:52px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.section-head .eyebrow{font-family:var(--ff-num);font-size:12px;letter-spacing:.14em;color:var(--c-accent);font-weight:500;margin-bottom:8px;display:block}
.section-head p{margin:10px 0 0;color:var(--c-muted);font-size:15px;max-width:640px}
.link-more{font-size:15px;font-weight:500;white-space:nowrap;border-bottom:1px solid transparent;padding-bottom:2px}
.link-more:hover{border-bottom-color:var(--c-primary)}
.divider{height:1px;background:var(--c-line);border:0;margin:0}

/* ---------- header / nav ---------- */
.site-header{position:sticky;top:0;z-index:60;padding:14px 0}
.site-nav{
  width:min(var(--w-container),calc(100% - 32px));
  margin:0 auto;
  background:rgba(255,255,255,.94);
  border:1px solid var(--c-line);
  border-radius:999px;
  box-shadow:var(--sh-nav);
  transition:box-shadow var(--t),background var(--t);
}
.site-nav.is-stuck{box-shadow:var(--sh-card);background:rgba(255,255,255,.99)}
.nav-inner{display:flex;align-items:center;gap:18px;height:64px;padding:0 12px 0 20px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--c-primary);letter-spacing:.01em;white-space:nowrap}
.brand:hover{color:var(--c-primary-hover)}
.brand-mark{
  width:32px;height:32px;border-radius:9px;background:var(--c-primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--ff-num);font-size:15px;font-weight:700;letter-spacing:0;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;display:inline-block;padding:9px 14px;border-radius:999px;
  font-size:15px;color:var(--c-body);font-weight:500;transition:color var(--t),background var(--t);
}
.nav-links a:hover{color:var(--c-primary);background:var(--c-primary-soft)}
.nav-links a.is-active{color:var(--c-primary)}
.nav-links a.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--c-primary);
}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px}
.nav-burger{
  display:none;width:44px;height:44px;border:1px solid var(--c-line);background:#fff;
  border-radius:999px;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
  transition:border-color var(--t),background var(--t);
}
.nav-burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-text);transition:background var(--t)}
.nav-burger:hover{border-color:var(--c-primary);background:var(--c-primary-soft)}

.nav-drawer{
  position:fixed;inset:0;z-index:90;background:#fff;display:none;flex-direction:column;
  padding:18px 20px 24px;overflow-y:auto;
}
.nav-drawer.is-open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--c-line)}
.drawer-close{
  width:44px;height:44px;border-radius:999px;border:1px solid var(--c-line);background:#fff;
  color:var(--c-text);font-size:20px;line-height:1;cursor:pointer;transition:border-color var(--t),background var(--t);
}
.drawer-close:hover{border-color:var(--c-primary);background:var(--c-primary-soft)}
.drawer-links{display:flex;flex-direction:column;margin-top:8px}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;padding:12px 4px;border-bottom:1px solid var(--c-line);
  font-size:16px;color:var(--c-text);font-weight:500;
}
.drawer-links a.is-active{color:var(--c-primary)}
.drawer-links a::after{content:"→";color:var(--c-muted);font-size:14px}
.drawer-foot{margin-top:auto;padding-top:24px}
.drawer-foot p{margin-top:14px;font-size:13px;color:var(--c-muted);line-height:1.7}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:500;cursor:pointer;text-align:center;
  transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t),transform var(--t);
}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-hover);color:#fff;transform:translateY(-1px)}
.btn-primary:active{background:var(--c-primary-active)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{background:var(--c-accent-hover);color:#fff;transform:translateY(-1px)}
.btn-outline{background:#fff;color:var(--c-primary);border-color:var(--c-line)}
.btn-outline:hover{border-color:var(--c-primary);background:var(--c-primary-soft);color:var(--c-primary)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:#EEF3F7;color:var(--c-muted);border-color:var(--c-line);cursor:not-allowed;transform:none}

/* ---------- breadcrumb ---------- */
.crumb{font-size:13px;color:var(--c-muted);padding:8px 0 0}
.crumb a{color:var(--c-primary)}
.crumb a:hover{text-decoration:underline}
.crumb span.sep{margin:0 8px;color:var(--c-line)}

/* ---------- category hero ---------- */
.cat-hero{background:#EDF4F8;border-bottom:1px solid var(--c-line);padding:34px 0 44px}
.cat-hero-inner{display:grid;grid-template-columns:1.3fr 1fr;gap:44px;align-items:center;margin-top:10px}
.cat-hero .kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:500;color:var(--c-primary);
  background:#fff;border:1px solid var(--c-primary-line);border-radius:999px;padding:6px 14px;margin-bottom:18px;
}
.cat-hero .kicker::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--c-accent)}
.cat-hero h1 span.h1-sub{display:block;font-size:15px;font-weight:500;color:var(--c-muted);letter-spacing:.02em;margin-top:12px;line-height:1.6}
.cat-hero .lead{margin-top:18px;font-size:16.5px;color:var(--c-body);max-width:600px}
.cat-hero .stat-row{display:flex;gap:34px;margin-top:26px;flex-wrap:wrap}
.cat-hero .stat-row strong{display:block;font-family:var(--ff-num);font-size:24px;font-weight:700;color:var(--c-primary);line-height:1.2}
.cat-hero .stat-row em{font-style:normal;font-size:13px;color:var(--c-muted)}
.cat-hero-media{position:relative}
.cat-hero-media .frame{
  aspect-ratio:16/9;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--sh-card);background:#fff;
}
.cat-hero-media img{width:100%;height:100%;object-fit:cover}
.cat-hero-media .tag-float{
  position:absolute;left:16px;bottom:16px;background:rgba(255,255,255,.95);
  border:1px solid var(--c-line);border-radius:var(--r-badge);
  padding:6px 12px;font-size:13px;color:var(--c-primary);font-weight:500;
}

/* ---------- chips ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;
  border-radius:999px;border:1px solid var(--c-line);background:#fff;
  font-size:14px;font-weight:500;color:var(--c-body);cursor:pointer;
  transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t);
}
.chip:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-soft)}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;box-shadow:var(--sh-sm)}
.chip.is-active:hover{background:var(--c-primary-hover);color:#fff}
.chip .num{font-family:var(--ff-num);font-size:12px;opacity:.7}

/* ---------- faq ---------- */
.faq-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  position:relative;display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  padding:22px 26px 22px 30px;cursor:pointer;list-style:none;
  font-size:16px;font-weight:600;color:var(--c-text);line-height:1.6;
  transition:background var(--t);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#F8FBFD}
.faq-item summary::before{
  content:"";position:absolute;left:12px;top:26px;width:3px;height:20px;border-radius:2px;
  background:transparent;transition:background var(--t);
}
.faq-item[open] summary::before{background:var(--c-primary)}
.faq-item[open] summary{color:var(--c-primary)}
.faq-arrow{
  flex:0 0 auto;width:20px;height:20px;margin-top:3px;color:var(--c-muted);
  transition:transform var(--t),color var(--t);
}
.faq-item[open] .faq-arrow{transform:rotate(90deg);color:var(--c-primary)}
.faq-answer{padding:0 26px 24px 30px;font-size:15px;line-height:1.85;color:var(--c-body);max-width:900px}
.faq-answer .point{color:var(--c-text);font-weight:500}
.faq-topic{
  display:inline-block;font-size:12px;font-weight:500;color:var(--c-primary);
  background:var(--c-primary-soft);border-radius:var(--r-badge);padding:2px 8px;margin-right:8px;
  vertical-align:2px;
}

/* ---------- feature figure ---------- */
.feature-figure{
  margin:0;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);overflow:hidden;
}
.feature-figure .frame{aspect-ratio:16/9;overflow:hidden;background:#EEF3F7}
.feature-figure img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease-out}
.feature-figure:hover img{transform:scale(1.02)}
.feature-figure figcaption{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 24px}
.feature-figure figcaption p{margin:0;font-size:14px;color:var(--c-muted);line-height:1.7}
.feature-figure figcaption strong{color:var(--c-text);font-weight:600;display:block;margin-bottom:4px;font-size:15px}
.stamp{
  flex:0 0 auto;font-size:12px;font-weight:500;color:var(--c-accent);
  border:1px solid var(--c-accent);border-radius:4px;padding:4px 8px;line-height:1;
  font-family:var(--ff-num);letter-spacing:.06em;
}

/* ---------- cta ---------- */
.cta-band{
  background:var(--c-primary);border-radius:20px;padding:48px;color:#fff;
  display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(24px,2.2vw,30px)}
.cta-band p{color:rgba(255,255,255,.78);margin-top:12px;font-size:15.5px;max-width:460px}
.subscribe-form label{display:block;font-size:13px;font-weight:500;color:rgba(255,255,255,.82);margin-bottom:8px}
.form-row{display:flex;gap:12px}
.form-row input{
  flex:1;height:48px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.3);
  background:rgba(255,255,255,.1);color:#fff;padding:0 14px;transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.form-row input::placeholder{color:rgba(255,255,255,.55)}
.form-row input:focus{outline:none;border-color:#fff;background:rgba(255,255,255,.16);box-shadow:0 0 0 3px rgba(255,255,255,.18)}
.form-hint{margin-top:12px;font-size:13px;color:rgba(255,255,255,.7)}
.form-hint.is-ok{color:#B7EBD6}
.form-hint.is-error{color:#FFD2C4}

/* ---------- footer ---------- */
.site-footer{background:var(--c-footer);color:rgba(255,255,255,.72);margin-top:72px;padding:60px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{color:#fff;font-size:17px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);color:#fff}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);max-width:340px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.72)}
.footer-col ul a:hover{color:#fff}
.contact-line{font-size:14px;line-height:1.8;color:rgba(255,255,255,.72)}
.contact-line strong{display:block;color:#fff;font-weight:600;font-family:var(--ff-num);font-size:14px;margin-bottom:6px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-links,.nav-actions .btn-outline{display:none}
  .nav-burger{display:inline-flex}
  .nav-inner{height:56px;padding:0 8px 0 16px}
  .nav-actions{margin-left:auto}
  .site-header{padding:10px 0}
  .cat-hero-inner{grid-template-columns:1fr;gap:28px}
  .cta-band{grid-template-columns:1fr;padding:36px;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1 / -1}
  .section{padding:60px 0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  body{font-size:16px}
  .section{padding:48px 0}
  .site-nav{width:calc(100% - 24px)}
  .brand{font-size:16px}
  .cat-hero{padding:24px 0 34px}
  .faq-item summary{padding:18px 18px 18px 26px;font-size:15.5px}
  .faq-item summary::before{left:10px;top:22px}
  .faq-answer{padding:0 18px 20px 26px}
  .feature-figure figcaption{flex-direction:column;align-items:flex-start}
  .form-row{flex-direction:column}
  .form-row .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-col.is-secondary{display:none}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-band{border-radius:16px;padding:28px 22px}
}
@media (max-width:520px){
  .cat-hero .stat-row{gap:22px}
  .chip{height:38px;padding:0 14px;font-size:13px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
}