/* roulang page: index */
:root{
  --brand:#1466D8;
  --brand-deep:#0E4FA8;
  --brand-soft:#E7F0FD;
  --accent:#FF7A3C;
  --mint:#14B8A6;
  --bg:#F4F7FC;
  --card:#FFFFFF;
  --line:#E3EAF3;
  --ink:#16233A;
  --muted:#5A6B85;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(16,42,80,.06);
  --sh:0 8px 24px rgba(16,42,80,.07);
  --sh-lg:0 14px 32px rgba(16,42,80,.12);
  --sec-y:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid rgba(20,102,216,.4);outline-offset:2px;border-radius:4px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec-y) 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-title{font-size:31px;font-weight:700;letter-spacing:-.3px;line-height:1.3}
.section-desc{color:var(--muted);font-size:15px;margin-top:8px;max-width:640px}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--brand-deep);background:var(--brand-soft);padding:6px 14px;border-radius:999px;margin-bottom:18px}

/* 顶部信息条 */
.topbar{background:#fff;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;height:38px}
.topbar-domain{color:rgba(20,102,216,.6);letter-spacing:.02em;white-space:nowrap}
.topbar-tip{flex:1;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--muted)}
.topbar-actions{display:flex;align-items:center;gap:12px;white-space:nowrap}
.topbar-actions a{color:var(--brand);font-weight:600;transition:color .2s ease-out}
.topbar-actions a:hover{color:var(--brand-deep)}

/* 主导航 */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:saturate(160%) blur(8px);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-sm);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.2px;color:var(--ink)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  color:#fff;font-size:12px;font-weight:800;letter-spacing:.04em;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;padding:8px 14px;border-radius:8px;
  font-size:15px;color:var(--muted);
  transition:color .2s ease-out,background .2s ease-out;
}
.nav-links a:hover{color:var(--brand);background:var(--brand-soft)}
.nav-links a.active{color:var(--ink);font-weight:600}
.nav-links a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line);background:#fff;color:var(--ink);
  align-items:center;justify-content:center;cursor:pointer;font-size:17px;
  transition:border-color .2s ease-out,color .2s ease-out;
}
.nav-toggle:hover{border-color:rgba(20,102,216,.4);color:var(--brand)}

/* 按钮体系 */
.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:600;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;transition:all .2s ease-out;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 12px rgba(20,102,216,.22)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 8px 20px rgba(20,102,216,.3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(20,102,216,.2)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:rgba(20,102,216,.4);color:var(--brand);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-sm{height:36px;padding:0 16px;font-size:14px;border-radius:9px}
.btn-block{width:100%}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-size:14px;font-weight:600;
  transition:color .2s ease-out;
}
.link-arrow svg{transition:transform .2s ease-out}
.link-arrow:hover{color:var(--brand-deep);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
.link-arrow:hover svg{transform:translateX(3px)}

/* Hero */
.hero{position:relative;overflow:hidden;background:#fff;padding:76px 0 84px}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(20,102,216,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(20,102,216,.055) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:linear-gradient(to bottom,#000,transparent 78%);
  mask-image:linear-gradient(to bottom,#000,transparent 78%);
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:540px;height:540px;
  border-radius:50%;background:var(--brand-soft);opacity:.75;pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:56px;align-items:center;
}
.hero-copy{max-width:620px}
.hero h1{font-size:46px;line-height:1.2;font-weight:800;letter-spacing:-.5px;margin-bottom:18px}
.hero-sub{font-size:17px;color:var(--muted);max-width:560px;margin-bottom:28px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:28px}
.badges{display:flex;gap:10px;flex-wrap:wrap}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 13px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:13px;font-weight:500;
}
.hero-visual{display:flex;justify-content:center}
.phone{
  position:relative;width:320px;max-width:100%;aspect-ratio:9/16;
  border-radius:24px;background:#0B1B33;padding:10px;box-shadow:var(--sh-lg);
}
.phone-screen{position:relative;width:100%;height:100%;border-radius:18px;overflow:hidden;background:var(--brand-soft)}
.phone-screen img{width:100%;height:100%;object-fit:cover}

/* 片段卡 */
.clip-track{
  display:flex;gap:20px;overflow-x:auto;padding:6px 4px 18px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
  scrollbar-width:thin;scrollbar-color:rgba(20,102,216,.28) transparent;
}
.clip-track::-webkit-scrollbar{height:6px}
.clip-track::-webkit-scrollbar-thumb{background:rgba(20,102,216,.25);border-radius:999px}
.clip-card{flex:0 0 calc((100% - 60px)/4);scroll-snap-align:start;display:block;color:inherit}
.clip-cover{
  position:relative;aspect-ratio:9/16;border-radius:var(--r-img);
  overflow:hidden;background:var(--brand-soft);box-shadow:var(--sh-sm);
}
.clip-cover img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
.clip-card:hover .clip-cover img{transform:scale(1.03)}
.clip-card:hover .clip-cover{box-shadow:var(--sh)}
.dur-badge{
  position:absolute;left:10px;top:10px;padding:3px 9px;border-radius:999px;
  background:var(--accent);color:#fff;font-size:12px;font-weight:600;line-height:1.6;
}
.play-dot{
  position:absolute;right:10px;bottom:10px;width:32px;height:32px;border-radius:50%;
  background:#fff;color:var(--brand);display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-sm);
}
.clip-title{
  font-size:15px;font-weight:700;line-height:1.5;margin-top:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.clip-tags{font-size:13px;color:var(--muted);margin-top:4px}

/* 清单 */
.checklist{border-top:1px solid var(--line)}
.checklist li{
  display:flex;align-items:flex-start;gap:20px;
  padding:24px 4px;border-bottom:1px solid var(--line);
  transition:background .2s ease-out;
}
.checklist li:hover{background:rgba(231,240,253,.45)}
.chk-num{
  font-size:28px;font-weight:800;color:var(--brand);letter-spacing:-.5px;
  flex:0 0 auto;line-height:1.2;min-width:52px;
}
.chk-body{flex:1;min-width:0}
.chk-body h3{font-size:18px;font-weight:700;margin-bottom:6px}
.chk-body p{font-size:14px;color:var(--muted)}
.chk-arrow{color:var(--brand);flex:0 0 auto;font-size:16px;padding-top:12px;transition:transform .2s ease-out}
.checklist li:hover .chk-arrow{transform:translateX(4px)}

/* 资讯卡 */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-sm);
  transition:box-shadow .2s ease-out,transform .2s ease-out;
}
.post-card:hover{box-shadow:var(--sh-lg);transform:translateY(-3px)}
.post-cover{display:block;aspect-ratio:16/10;background:var(--brand-soft);overflow:hidden}
.post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
.post-card:hover .post-cover img{transform:scale(1.03)}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.cat-chip{
  align-self:flex-start;padding:3px 10px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);font-size:12px;font-weight:600;
}
.post-title{
  font-size:17px;font-weight:700;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-sum{
  font-size:14px;color:var(--muted);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:8px;display:flex;align-items:center;justify-content:space-between;
  gap:12px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);
}
.empty{
  grid-column:1/-1;padding:56px 24px;text-align:center;
  background:var(--card);border:1px dashed var(--line);border-radius:var(--r-card);
}
.empty-dot{
  width:72px;height:72px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;
}
.empty p{color:var(--muted);font-size:14px;margin-top:6px}

/* 口碑 */
.voices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.voice{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--sh-sm);
  transition:box-shadow .2s ease-out,transform .2s ease-out;
}
.voice:hover{box-shadow:var(--sh);transform:translateY(-2px)}
.voice-top{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:0 0 auto;
  background:var(--brand-soft);color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;
}
.voice-name{font-size:14px;font-weight:600}
.voice-meta{font-size:12px;color:var(--muted)}
.stars{font-size:13px;letter-spacing:2px;color:var(--accent);margin-bottom:8px}
.stars.mint{color:var(--mint)}
.voice-text{
  font-size:14px;color:var(--muted);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}

/* CTA 带 */
.cta-band{
  background:rgba(20,102,216,.08);
  border:1px solid rgba(20,102,216,.2);
  border-radius:var(--r-card);
  padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:26px;font-weight:800;line-height:1.4;letter-spacing:-.3px;max-width:560px}
.cta-band p{color:var(--muted);font-size:14px;margin-top:8px}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap}

/* FAQ */
.faq-list{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);overflow:hidden}
.faq-list details + details{border-top:1px solid var(--line)}
.faq-list summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:16px;
  padding:20px 24px;font-size:16px;font-weight:600;
  transition:background .2s ease-out;
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:hover{background:rgba(231,240,253,.6)}
.faq-list details[open] summary{background:var(--brand-soft)}
.faq-num{color:var(--brand);font-weight:800;font-size:14px;letter-spacing:.06em;flex:0 0 auto;padding-top:3px}
.faq-qtext{flex:1;min-width:0}
.faq-ico{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:15px;line-height:1;
  margin-top:2px;
}
.faq-ico::before{content:"+"}
.faq-list details[open] .faq-ico::before{content:"−"}
.faq-body{padding:0 24px 22px 64px;color:var(--muted);font-size:15px}

/* 页脚 */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 24px;margin-top:24px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.foot-brand .brand{margin-bottom:14px}
.foot-note{font-size:13px;color:var(--muted);line-height:1.8}
.foot-mail{font-size:13px;color:var(--brand);margin-top:8px;font-weight:600}
.foot-col h4{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--ink)}
.foot-col ul li + li{margin-top:9px}
.foot-col ul a{font-size:14px;color:var(--muted);transition:color .2s ease-out}
.foot-col ul a:hover{color:var(--brand)}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}

/* 移动端抽屉 */
.drawer{position:fixed;inset:0;z-index:80;display:none}
.drawer.open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(16,35,58,.45)}
.drawer-panel{
  position:absolute;right:0;top:0;bottom:0;width:300px;max-width:86%;
  background:#fff;padding:20px;display:flex;flex-direction:column;
  box-shadow:var(--sh-lg);animation:slideIn .2s ease-out;
}
@keyframes slideIn{from{transform:translateX(16px);opacity:.6}to{transform:translateX(0);opacity:1}}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-head .brand-text{font-weight:800;font-size:15px}
.drawer-close{
  width:34px;height:34px;border-radius:9px;border:1px solid var(--line);background:#fff;
  color:var(--muted);cursor:pointer;font-size:18px;line-height:1;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-top:16px}
.drawer-nav a{padding:12px 14px;border-radius:10px;font-size:15px;color:var(--muted);transition:background .2s ease-out,color .2s ease-out}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-nav a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:700}
.drawer-cta{margin-top:auto}

/* 移动端吸底 */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:60;height:64px;
  background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -6px 18px rgba(16,42,80,.08);
  display:none;align-items:center;gap:12px;padding:0 16px;
  transform:translateY(110%);transition:transform .2s ease-out;
}
.sticky-cta.show{transform:translateY(0)}
.sticky-cta .btn{flex:1}

@media (max-width:1024px){
  :root{--sec-y:72px}
  .hero{padding:60px 0 68px}
  .hero-grid{grid-template-columns:minmax(0,1fr) 300px;gap:40px}
  .hero h1{font-size:38px}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .voices{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .clip-card{flex:0 0 calc((100% - 40px)/3)}
}
@media (max-width:960px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-cta-desktop{display:none}
}
@media (max-width:768px){
  :root{--sec-y:56px}
  .wrap{padding:0 20px}
  .topbar-tip{display:none}
  .topbar-inner{justify-content:space-between}
  .hero{padding:48px 0 56px}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:36px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:16px}
  .phone{width:260px}
  .hero-cta .btn{flex:1}
  .section-title{font-size:25px}
  .section-head{margin-bottom:26px;align-items:flex-start}
  .post-grid{grid-template-columns:minmax(0,1fr)}
  .voices{grid-template-columns:minmax(0,1fr)}
  .clip-card{flex:0 0 64%}
  .cta-band{padding:26px 22px}
  .cta-band h2{font-size:21px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
  .faq-list summary{padding:16px 18px;font-size:15px}
  .faq-body{padding:0 18px 18px 52px;font-size:14px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .chk-num{font-size:22px;min-width:42px}
  .body-pb{padding-bottom:64px}
}
@media (max-width:520px){
  .hero h1{font-size:26px}
  .badges .badge{font-size:12px}
}

/* roulang page: category1 */
:root{
  --brand:#1466D8;
  --brand-deep:#0E4FA8;
  --brand-soft:#E7F0FD;
  --accent:#FF7A3C;
  --mint:#14B8A6;
  --bg:#F4F7FC;
  --card:#FFFFFF;
  --line:#E3EAF3;
  --ink:#16233A;
  --muted:#5A6B85;
  --shadow-sm:0 1px 2px rgba(16,42,80,.06);
  --shadow:0 8px 24px rgba(16,42,80,.07);
  --shadow-lg:0 14px 32px rgba(16,42,80,.12);
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Inter,Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid rgba(20,102,216,.45);outline-offset:2px;border-radius:6px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}

/* ---------- 顶部信息条 ---------- */
.topbar{background:#fff;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:38px}
.topbar-domain{color:rgba(20,102,216,.6);font-weight:700;letter-spacing:.3px}
.topbar-tip{flex:1;text-align:center;color:var(--muted)}
.topbar-actions{display:flex;align-items:center;gap:14px}
.topbar-actions .quiet{color:var(--brand);font-weight:600}
.topbar-actions .quiet:hover{color:var(--brand-deep);text-decoration:underline}
.mini-btn{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  border:1px solid rgba(20,102,216,.35);color:var(--brand);font-weight:600;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.mini-btn:hover{background:var(--brand);color:#fff;border-color:var(--brand)}

/* ---------- 主导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.6px;
  box-shadow:0 6px 14px rgba(20,102,216,.24);
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.3px;color:var(--ink)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;padding:10px 13px;font-size:15px;color:var(--muted);border-radius:8px;
  transition:color .2s ease-out,background .2s ease-out;
}
.nav-links a:hover{color:var(--brand);background:var(--brand-soft)}
.nav-links a.active{color:var(--ink);font-weight:700}
.nav-links a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;font-size:18px;line-height:1;cursor:pointer;
  transition:border-color .2s ease-out,color .2s ease-out;
}
.nav-toggle:hover{border-color:rgba(20,102,216,.4);color:var(--brand)}

/* ---------- 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:700;border:1px solid transparent;cursor:pointer;
  transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(20,102,216,.22)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 12px 24px rgba(20,102,216,.28)}
.btn-primary:active{transform:none;box-shadow:0 4px 10px rgba(20,102,216,.2)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink);box-shadow:var(--shadow-sm)}
.btn-ghost:hover{border-color:rgba(20,102,216,.4);color:var(--brand)}
.btn-ghost:active{transform:none}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(255,122,60,.26)}
.btn-accent:hover{filter:brightness(.95);transform:translateY(-1px)}
.btn-block{width:100%}

/* ---------- 文字链 ---------- */
.text-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:700;font-size:15px;
  transition:color .2s ease-out;
}
.text-link .arrow{transition:transform .2s ease-out}
.text-link:hover{color:var(--brand-deep)}
.text-link:hover .arrow{transform:translateX(3px)}
.text-link::after{
  content:"";position:absolute;
}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line)}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--muted);padding:14px 0}
.crumb a{transition:color .2s ease-out}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:#C3CFDF}
.crumb .now{color:var(--brand);font-weight:700}

/* ---------- 页面首屏 ---------- */
.page-hero{
  position:relative;
  background:#fff;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(20,102,216,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(20,102,216,.05) 1px,transparent 1px);
  background-size:34px 34px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
  pointer-events:none;
}
.page-hero .wrap{position:relative;padding-top:54px;padding-bottom:48px}
.tag{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:700;letter-spacing:.2px;
}
.tag .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.page-hero h1{
  margin-top:18px;
  font-size:46px;line-height:1.2;font-weight:800;letter-spacing:-.5px;max-width:860px;
}
.page-hero .lead{
  margin-top:16px;max-width:720px;font-size:17px;color:var(--muted);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* 深色信息面板 */
.stat-strip{
  margin-top:34px;
  background:#0F1B2E;
  border-radius:var(--r-card);
  padding:22px 24px;
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
  box-shadow:var(--shadow-lg);
}
.stat{position:relative;padding-left:16px}
.stat::before{
  content:"";position:absolute;left:0;top:8px;width:3px;height:26px;border-radius:3px;background:var(--brand);
}
.stat.alert::before{background:var(--accent);box-shadow:0 0 0 4px rgba(255,122,60,.16)}
.stat-k{display:block;font-size:12.5px;color:#8FA3BF;letter-spacing:.4px}
.stat-v{display:block;margin-top:4px;font-size:19px;font-weight:800;color:#fff;letter-spacing:-.2px}
.stat-v small{font-size:13px;font-weight:600;color:#9FB4D1;margin-left:4px}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-tight{padding:64px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px}
.section-head h2{font-size:32px;font-weight:700;letter-spacing:-.4px}
.section-head p{margin-top:8px;color:var(--muted);font-size:15px;max-width:640px}
.eyebrow{font-size:13px;font-weight:700;color:var(--brand);letter-spacing:1.4px;text-transform:uppercase}

/* ---------- 图文左右交错行 ---------- */
.zig-list{display:flex;flex-direction:column;gap:64px}
.zig{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:48px;align-items:center;
}
.zig-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  background:var(--brand-soft);border:1px solid var(--line);
  box-shadow:var(--shadow);aspect-ratio:16/11;
  transition:box-shadow .2s ease-out,transform .2s ease-out;
}
.zig-media img{width:100%;height:100%;object-fit:cover}
.zig:hover .zig-media{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.zig-media .media-badge{
  position:absolute;left:14px;top:14px;height:26px;padding:0 11px;border-radius:999px;
  background:var(--accent);color:#fff;font-size:12px;font-weight:700;display:inline-flex;align-items:center;
}
.zig-body{padding:4px 0}
.zig-no{
  display:inline-block;font-size:28px;font-weight:800;line-height:1;
  color:transparent;-webkit-text-stroke:1.4px var(--brand);letter-spacing:1px;
}
.zig-body h3{margin-top:12px;font-size:24px;font-weight:700;letter-spacing:-.3px}
.zig-body p{margin-top:10px;color:var(--muted);font-size:15.5px}
.zig-points{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.zig-points li{position:relative;padding-left:20px;font-size:15px;color:var(--ink)}
.zig-points li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:var(--brand-soft);border:2px solid var(--brand);
}
.zig .text-link{margin-top:20px}
.zig.reverse .zig-media{order:2}
.zig.reverse .zig-body{order:1}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:rgba(20,102,216,.08);
  border:1px solid rgba(20,102,216,.2);
  border-radius:var(--r-card);
  padding:36px 38px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-40px;top:-40px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,102,216,.16),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:28px;font-weight:700;letter-spacing:-.3px;max-width:560px}
.cta-band p{margin-top:8px;color:var(--muted);font-size:15px;max-width:560px}
.cta-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;flex-shrink:0}

/* ---------- FAQ ---------- */
.faq-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:16px;
  padding:22px 24px;transition:background .2s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#FAFCFF}
.faq-no{font-size:14px;font-weight:800;color:var(--brand);min-width:26px;padding-top:2px}
.faq-q{flex:1;font-size:17px;font-weight:700;letter-spacing:-.2px}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--brand);font-weight:800;font-size:15px;
  transition:background .2s ease-out,transform .2s ease-out,border-color .2s ease-out;
}
.faq-item[open] summary{background:var(--brand-soft)}
.faq-item[open] .faq-icon{background:var(--brand);color:#fff;border-color:var(--brand);transform:rotate(180deg)}
.faq-a{padding:2px 24px 24px 66px;color:var(--muted);font-size:15.5px;background:var(--brand-soft)}
.faq-a strong{color:var(--ink)}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:8px}
.foot-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
  padding:56px 0 34px;
}
.foot-brand .brand{margin-bottom:14px}
.foot-note{font-size:14px;color:var(--muted);max-width:320px}
.foot-mail{margin-top:10px;font-size:14px;font-weight:700;color:var(--brand)}
.foot-col h4{font-size:15px;font-weight:700;margin-bottom:14px}
.foot-col ul{display:flex;flex-direction:column;gap:10px}
.foot-col a{font-size:14px;color:var(--muted);transition:color .2s ease-out}
.foot-col a:hover{color:var(--brand)}
.foot-bottom{
  border-top:1px solid var(--line);padding:18px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--muted);flex-wrap:wrap;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .page-hero h1{font-size:38px}
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .zig{gap:34px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:768px){
  .wrap{padding:0 20px}
  .topbar-tip{display:none}
  .nav-links{
    display:none;position:fixed;left:0;right:0;top:106px;bottom:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:2px;
    padding:18px 20px 32px;border-top:1px solid var(--line);overflow-y:auto;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:14px 12px;font-size:16px;border-radius:10px}
  .nav-links a.active::after{left:12px;right:auto;width:22px;bottom:8px}
  .nav-cta-desktop{display:none}
  .nav-toggle{display:grid;place-items:center}
  .page-hero .wrap{padding-top:36px;padding-bottom:36px}
  .page-hero h1{font-size:30px}
  .page-hero .lead{font-size:16px}
  .section{padding:56px 0}
  .section-head{flex-direction:column;align-items:flex-start;margin-bottom:26px}
  .section-head h2{font-size:26px}
  .zig-list{gap:48px}
  .zig{grid-template-columns:minmax(0,1fr);gap:20px}
  .zig.reverse .zig-media{order:0}
  .zig.reverse .zig-body{order:0}
  .zig-body h3{font-size:21px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px 22px;gap:20px}
  .cta-band h2{font-size:22px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .faq-a{padding-left:24px}
  .foot-grid{grid-template-columns:1fr;padding:42px 0 26px}
}
@media (max-width:520px){
  .stat-strip{grid-template-columns:1fr;padding:18px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .brand-text{font-size:15px}
  .page-hero h1{font-size:26px}
}

/* roulang page: article */
:root{
  --brand:#1466D8;
  --brand-deep:#0E4FA8;
  --brand-soft:#E7F0FD;
  --accent:#FF7A3C;
  --mint:#14B8A6;
  --bg:#F4F7FC;
  --card:#FFFFFF;
  --line:#E3EAF3;
  --ink:#16233A;
  --muted:#5A6B85;
  --dark:#0E1B33;
  --shadow-sm:0 1px 2px rgba(16,42,80,.06);
  --shadow:0 8px 24px rgba(16,42,80,.07);
  --shadow-lg:0 14px 32px rgba(16,42,80,.12);
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid rgba(20,102,216,.45);outline-offset:2px;border-radius:6px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* 顶部信息条 */
.topbar{background:#fff;border-bottom:1px solid var(--line);font-size:13px}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:40px}
.topbar-domain{color:rgba(20,102,216,.6);letter-spacing:.02em;white-space:nowrap}
.topbar-hint{flex:1;text-align:center;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-actions{display:flex;align-items:center;gap:10px;white-space:nowrap}
.topbar-link{color:var(--brand);font-size:13px}
.topbar-link:hover{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px}
.brand-mark{
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:12.5px;font-weight:800;letter-spacing:.06em;
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-.2px;color:var(--ink)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{position:relative;padding:6px 0;font-size:15px;color:var(--muted);transition:color .2s ease-out}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out;
}
.nav-links a:hover{color:var(--brand)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--brand);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-size:17px;cursor:pointer;transition:border-color .2s ease-out,color .2s ease-out;
}
.nav-toggle:hover{border-color:rgba(20,102,216,.4);color:var(--brand)}
.nav-cta-mobile{display:none}

/* 按钮体系 */
.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:600;cursor:pointer;white-space:nowrap;
  transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(20,102,216,.22)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(20,102,216,.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(20,102,216,.2)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:rgba(20,102,216,.4);color:var(--brand)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.btn-xs{height:30px;padding:0 12px;font-size:12.5px;border-radius:8px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14.5px;font-weight:600}
.link-arrow span{transition:transform .2s ease-out}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px;color:var(--brand-deep)}
.link-arrow:hover span{transform:translateX(3px)}

/* 文章头部 */
.article-hero{
  position:relative;background:#fff;border-bottom:1px solid var(--line);
  padding:26px 0 40px;overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(20,102,216,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(20,102,216,.05) 1px,transparent 1px);
  background-size:34px 34px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0));
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),rgba(0,0,0,0));
}
.article-hero .wrap{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px}
.breadcrumb a{color:var(--muted);transition:color .2s ease-out}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#B7C4D6}
.breadcrumb .current{color:var(--brand);font-weight:600}
.article-head{max-width:860px}
.chip{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:600;letter-spacing:.02em;
}
.article-title{
  margin:16px 0 0;font-size:42px;line-height:1.28;font-weight:800;letter-spacing:-.5px;color:var(--ink);
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:20px;font-size:13.5px;color:var(--muted)}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.dot{width:4px;height:4px;border-radius:50%;background:#C6D2E2}
.status-pill{
  display:inline-flex;align-items:center;gap:7px;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);color:var(--ink);font-size:12.5px;
}
.reddot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(255,122,60,.16)}

/* 正文阅读区 */
.article-section{padding:40px 0 24px}
.article-card{
  max-width:860px;margin:0 auto;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--shadow);padding:44px 56px;
}
.article-body{font-size:16.5px;line-height:1.9;color:#22314B}
.article-body > * + *{margin-top:1.2em}
.article-body p{margin:0;font-size:16.5px;line-height:1.9;color:#22314B}
.article-body h2{
  margin:2em 0 .7em;padding-left:14px;border-left:4px solid var(--brand);
  font-size:22px;line-height:1.5;font-weight:700;color:var(--ink);
}
.article-body h3{margin:1.6em 0 .5em;font-size:19px;line-height:1.55;font-weight:600;color:var(--brand-deep)}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0}
.article-body ul{list-style:none;margin:1.2em 0;padding:0}
.article-body ul li{position:relative;padding-left:20px;margin:9px 0}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--brand);
}
.article-body ol{margin:1.2em 0;padding-left:1.4em;list-style:decimal}
.article-body ol li{margin:9px 0;padding-left:4px}
.article-body ol li::marker{color:var(--brand);font-weight:600}
.article-body blockquote{
  margin:1.5em 0;padding:16px 22px;background:var(--brand-soft);
  border-left:3px solid var(--brand);border-radius:0 var(--r-img) var(--r-img) 0;color:#2B3D5C;
}
.article-body blockquote p{color:#2B3D5C}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-deep)}
.article-body img{border-radius:var(--r-img);margin:1.5em 0;box-shadow:var(--shadow-sm)}
.article-body figure{margin:1.5em 0}
.article-body figure img{margin:0 0 8px}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;line-height:1.7}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:15px;background:#fff;border:1px solid var(--line);border-radius:var(--r-img);overflow:hidden}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;line-height:1.7}
.article-body th{background:var(--brand-soft);color:var(--ink);font-weight:600}
.article-body code{background:var(--brand-soft);color:var(--brand-deep);padding:2px 6px;border-radius:6px;font-size:14px}
.article-body pre{margin:1.5em 0;background:var(--dark);color:#DCE7F7;padding:18px 20px;border-radius:var(--r-img);overflow:auto;font-size:14px;line-height:1.75}
.article-body pre code{background:transparent;color:inherit;padding:0}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.article-body strong{font-weight:700;color:var(--ink)}

/* 空态 */
.empty-block{text-align:center;padding:44px 16px 52px}
.empty-orb{
  display:inline-block;width:66px;height:66px;border-radius:50%;
  background:var(--brand-soft);border:1px dashed rgba(20,102,216,.45);margin-bottom:18px;
}
.empty-title{margin:0 0 8px;font-size:20px;font-weight:700;color:var(--ink)}
.empty-desc{margin:0 0 22px;font-size:14.5px;color:var(--muted)}

/* 尾部与相关推荐 */
.tail-section{padding:48px 0 8px}
.tail-inner{max-width:860px;margin:0 auto}
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding-bottom:22px;border-bottom:1px solid var(--line)}
.tag-label{font-size:13px;color:var(--muted);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);color:var(--muted);font-size:12.5px;
  transition:border-color .2s ease-out,color .2s ease-out,background-color .2s ease-out;
}
.tag:hover{border-color:rgba(20,102,216,.4);color:var(--brand);background:var(--brand-soft)}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:36px 0 18px}
.related-head h2{margin:0;font-size:20px;font-weight:700;color:var(--ink)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(20,102,216,.28)}
.rel-thumb{display:block;aspect-ratio:16/10;background:var(--brand-soft);overflow:hidden}
.rel-thumb img{width:100%;height:100%;object-fit:cover}
.rel-body{display:flex;flex-direction:column;gap:8px;padding:18px 20px 20px}
.rel-cat{align-self:flex-start;font-size:12px;color:var(--brand);background:var(--brand-soft);border-radius:var(--r-pill);padding:3px 10px}
.rel-title{margin:0;font-size:16px;font-weight:700;line-height:1.55;color:var(--ink)}
.rel-link{margin-top:auto;font-size:13.5px;color:var(--muted);transition:color .2s ease-out}
.rel-card:hover .rel-link{color:var(--brand)}
.back-row{display:flex;justify-content:center;margin-top:32px}

/* CTA 带 */
.cta-wrap{padding:64px 0 0}
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:rgba(20,102,216,.08);border:1px solid rgba(20,102,216,.2);
  border-radius:20px;padding:32px 36px;
}
.cta-title{margin:0 0 6px;font-size:22px;font-weight:700;line-height:1.45;color:var(--ink)}
.cta-sub{margin:0;font-size:14px;color:var(--muted)}
.cta-actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap}

/* FAQ */
.faq-section{padding:72px 0 88px}
.section-head{display:flex;flex-direction:column;gap:8px;margin-bottom:26px}
.section-title{margin:0;font-size:30px;font-weight:700;letter-spacing:-.3px;color:var(--ink)}
.section-sub{margin:0;font-size:14.5px;color:var(--muted)}
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-sm);overflow:hidden}
.faq-item{border-top:1px solid var(--line)}
.faq-item:first-child{border-top:0}
.faq-item summary{
  display:flex;align-items:center;gap:16px;padding:20px 24px;cursor:pointer;list-style:none;
  transition:background-color .2s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#FAFCFF}
.faq-item[open] summary{background:var(--brand-soft)}
.faq-num{font-size:14px;font-weight:800;color:var(--brand);letter-spacing:.02em;flex:0 0 auto}
.faq-q{flex:1;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6}
.faq-icon{position:relative;flex:0 0 auto;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .2s ease-out,opacity .2s ease-out;
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.faq-item[open] .faq-icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.faq-a{padding:0 24px 22px 62px;font-size:15px;color:var(--muted);line-height:1.85}
.faq-a p{margin:0}
.faq-a p + p{margin-top:10px}

/* 页脚 */
.site-footer{background:var(--dark);color:#B9C6DA;padding:56px 0 0;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand .brand-text{color:#fff}
.foot-brand .brand-mark{background:var(--brand)}
.foot-note{margin:16px 0 0;font-size:13.5px;line-height:1.85;color:#8FA3BF;max-width:320px}
.foot-col h4{margin:0 0 14px;font-size:15px;font-weight:700;color:#fff}
.foot-col ul{list-style:none;margin:0;padding:0}
.foot-col li a{display:inline-block;padding:5px 0;font-size:14px;color:#9FB0C9;transition:color .2s ease-out}
.foot-col li a:hover{color:#fff}
.foot-mail{margin:10px 0 0;font-size:14px;color:#7FC0FF}
.foot-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  margin-top:40px;padding:18px 0 22px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:#7C8CA6;
}

/* 移动端吸底 */
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;
  align-items:center;justify-content:space-between;gap:12px;
  padding:10px 16px;background:rgba(255,255,255,.96);
  border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(16,42,80,.08);
  transform:translateY(110%);transition:transform .25s ease-out;
}
.sticky-cta.show{transform:translateY(0)}
.sticky-text{font-size:13.5px;color:var(--ink);font-weight:600}

/* 响应式 */
@media (max-width:1024px){
  .article-title{font-size:34px}
  .article-card{padding:36px 32px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-links{
    position:absolute;top:100%;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:8px 24px 18px;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 0;border-bottom:1px solid var(--line);font-size:15px}
  .nav-links a::after{display:none}
  .nav-cta-desktop{display:none}
  .nav-cta-mobile{display:inline-flex;margin-top:14px;width:100%}
}
@media (max-width:768px){
  body{padding-bottom:70px}
  .wrap{padding:0 20px}
  .topbar-hint{display:none}
  .topbar-inner{gap:10px}
  .article-hero{padding:20px 0 30px}
  .article-title{font-size:28px;line-height:1.36;letter-spacing:-.2px}
  .article-section{padding:28px 0 16px}
  .article-card{padding:26px 20px;border-radius:14px}
  .article-body,.article-body p{font-size:15.5px;line-height:1.85}
  .article-body h2{font-size:19px;margin:1.7em 0 .6em}
  .article-body h3{font-size:17px}
  .cta-wrap{padding:44px 0 0}
  .cta-band{flex-direction:column;align-items:flex-start;gap:20px;padding:24px 20px}
  .cta-title{font-size:19px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .faq-section{padding:48px 0 56px}
  .section-title{font-size:23px}
  .faq-item summary{padding:16px 18px;gap:12px}
  .faq-q{font-size:15px}
  .faq-a{padding:0 18px 18px 48px;font-size:14.5px}
  .related-grid{grid-template-columns:1fr;gap:16px}
  .tail-section{padding:36px 0 0}
  .sticky-cta{display:flex}
}
@media (max-width:520px){
  .brand-text{font-size:15.5px}
  .article-title{font-size:25px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .topbar-domain{font-size:12px}
}

/* roulang page: category2 */
:root{
  --brand:#1466D8;
  --brand-deep:#0E4FA8;
  --brand-soft:#E7F0FD;
  --accent:#FF7A3C;
  --mint:#14B8A6;
  --bg:#F4F7FC;
  --card:#FFFFFF;
  --line:#E3EAF3;
  --ink:#16233A;
  --muted:#5A6B85;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --shadow-sm:0 1px 2px rgba(16,42,80,.06);
  --shadow:0 8px 24px rgba(16,42,80,.07);
  --shadow-lg:0 14px 32px rgba(16,42,80,.12);
  --sec:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;line-height:1.25;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
:focus-visible{outline:2px solid rgba(20,102,216,.4);outline-offset:2px;border-radius:8px}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0}
.section-tight{padding:calc(var(--sec) * .6) 0}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:24px;height:70px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink)}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:13px;font-weight:800;letter-spacing:.6px;
  box-shadow:0 4px 12px rgba(20,102,216,.28);
}
.brand-text{font-size:16px;font-weight:700;letter-spacing:-.2px}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  position:relative;display:inline-block;padding:8px 14px;border-radius:999px;
  font-size:15px;color:var(--muted);transition:color .2s ease-out,background-color .2s ease-out;
}
.nav-links a:hover{color:var(--brand);background:var(--brand-soft)}
.nav-links a.active{color:var(--brand-deep);font-weight:600;background:var(--brand-soft)}
.nav-links a.active::after{
  content:"";position:absolute;left:50%;bottom:-19px;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--ink);
  font-size:18px;cursor:pointer;transition:border-color .2s ease-out,color .2s ease-out;
}
.nav-toggle:hover{border-color:rgba(20,102,216,.4);color:var(--brand)}

/* ---------- 按钮 ---------- */
.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:600;cursor:pointer;
  transition:background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(20,102,216,.24)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px);box-shadow:0 10px 22px rgba(20,102,216,.3)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 10px rgba(20,102,216,.22)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:rgba(20,102,216,.4);color:var(--brand)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand);
  border-bottom:1px solid transparent;transition:color .2s ease-out,border-color .2s ease-out;
}
.link-arrow .arw{transition:transform .2s ease-out}
.link-arrow:hover{color:var(--brand-deep);border-bottom-color:rgba(20,102,216,.35)}
.link-arrow:hover .arw{transform:translateX(3px)}

.badge{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:600;background:var(--brand-soft);color:var(--brand-deep);
}
.badge-accent{background:rgba(255,122,60,.14);color:#C4501B}
.badge-mint{background:rgba(20,184,166,.14);color:#0B7C70}

/* ---------- 面包屑 ---------- */
.crumbs-wrap{padding-top:28px}
.crumbs{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs .sep{color:#B7C3D6}
.crumbs a{color:var(--muted);transition:color .2s ease-out}
.crumbs a:hover{color:var(--brand)}
.crumbs .cur{color:var(--brand);font-weight:600}

/* ---------- Hero ---------- */
.page-hero{padding:36px 0 var(--sec)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);font-size:13px;font-weight:600;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.hero-title{
  margin:18px 0 0;font-size:clamp(28px,4.4vw,46px);font-weight:800;letter-spacing:-.5px;line-height:1.18;
}
.hero-title em{font-style:normal;color:var(--brand)}
.hero-lead{margin-top:16px;max-width:620px;font-size:16px;color:var(--muted);line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;font-size:13px;color:var(--muted)}
.hero-facts li{display:inline-flex;align-items:center;gap:8px}
.hero-facts li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint)}
.hero-media{
  position:relative;border-radius:var(--r-card);overflow:hidden;background:var(--brand-soft);
  box-shadow:var(--shadow);border:1px solid var(--line);aspect-ratio:4/3;
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(20,102,216,0) 55%,rgba(16,35,58,.18));
}

/* ---------- 胶囊筛选 ---------- */
.chips-section{padding-bottom:8px}
.chips{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;scrollbar-width:thin}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line);background:#fff;color:var(--muted);font-size:14px;font-weight:600;
  transition:color .2s ease-out,border-color .2s ease-out,background-color .2s ease-out;
}
.chip:hover{color:var(--brand);border-color:rgba(20,102,216,.4)}
.chip.is-active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(20,102,216,.22)}

/* ---------- 板块标题 ---------- */
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:34px}
.sec-title{font-size:clamp(24px,3vw,32px);font-weight:700;letter-spacing:-.3px}
.sec-desc{margin-top:10px;max-width:640px;font-size:15px;color:var(--muted)}

/* ---------- 模块卡阵 ---------- */
.mod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.mod-card{
  display:flex;flex-direction:column;height:100%;overflow:hidden;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.mod-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:rgba(20,102,216,.25)}
.mod-thumb{aspect-ratio:16/10;background:var(--brand-soft);overflow:hidden}
.mod-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
.mod-card:hover .mod-thumb img{transform:scale(1.02)}
.mod-body{display:flex;flex-direction:column;gap:10px;flex:1;padding:20px 24px 24px}
.mod-title{font-size:20px;font-weight:600}
.mod-text{font-size:14px;line-height:1.7;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.mod-body .link-arrow{margin-top:auto;padding-top:6px}

/* ---------- 数据带 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 20px;text-align:center;box-shadow:var(--shadow-sm);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.stat:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.stat b{display:block;font-size:34px;font-weight:800;letter-spacing:-1px;color:var(--brand);line-height:1.2}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--muted)}

/* ---------- 口碑条 ---------- */
.review-track{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{
  display:flex;flex-direction:column;gap:14px;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.review-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.review-head{display:flex;align-items:center;gap:12px}
.avatar{
  width:40px;height:40px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-deep);font-weight:700;font-size:14px;flex:0 0 auto;
}
.review-name{font-size:15px;font-weight:600}
.review-meta{font-size:12px;color:var(--muted)}
.stars{color:var(--accent);font-size:14px;letter-spacing:2px}
.stars .mint{color:var(--mint)}
.review-text{font-size:14px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- CTA 带 ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  background:rgba(20,102,216,.08);border:1px solid rgba(20,102,216,.2);
  border-radius:var(--r-card);padding:36px 40px;
}
.cta-title{font-size:clamp(20px,2.6vw,26px);font-weight:700;max-width:520px;line-height:1.4}
.cta-text{margin-top:10px;font-size:14px;color:var(--muted);max-width:540px}
.cta-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px}

/* ---------- 页脚 ---------- */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 0;margin-top:12px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.foot-brand .brand{margin-bottom:14px}
.foot-note{font-size:13px;color:var(--muted);line-height:1.8;max-width:320px}
.foot-mail{margin-top:8px;font-size:13px;font-weight:600;color:var(--brand)}
.foot-col h4{font-size:14px;font-weight:700;margin-bottom:14px}
.foot-col ul li a{display:inline-block;padding:5px 0;font-size:14px;color:var(--muted);transition:color .2s ease-out}
.foot-col ul li a:hover{color:var(--brand)}
.foot-bottom{
  margin-top:44px;border-top:1px solid var(--line);padding:20px 0;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--sec:72px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{max-width:520px;margin:0 auto;width:100%}
  .mod-grid{grid-template-columns:repeat(2,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:980px){
  .nav-toggle{display:inline-flex}
  .nav-cta-desktop{display:none}
  .nav-links{
    position:absolute;top:calc(100% + 1px);left:0;right:0;display:none;flex-direction:column;align-items:stretch;
    gap:4px;padding:12px 20px 18px;background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow);border-radius:0 0 var(--r-card) var(--r-card);
  }
  .nav-links.is-open{display:flex}
  .nav-links a{padding:12px 14px;border-radius:var(--r-btn);font-size:15px}
  .nav-links a.active::after{display:none}
  .wrap{padding:0 20px}
}
@media (max-width:900px){
  .review-track{display:flex;gap:16px;overflow-x:auto;padding-bottom:10px;scroll-snap-type:x mandatory}
  .review-card{min-width:280px;flex:0 0 auto;scroll-snap-align:start}
}
@media (max-width:768px){
  .hero-actions .btn{flex:1 1 100%}
  .cta-band{padding:28px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
}
@media (max-width:640px){
  :root{--sec:56px}
  .mod-grid{grid-template-columns:1fr;gap:16px}
  .stat-grid{grid-template-columns:1fr;gap:16px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .brand-text{font-size:15px}
  .crumb-cur{display:block}
}