/* roulang page: index */
:root{
  --brand:#0E3B36;
  --brand-dark:#0A2C28;
  --brand-soft:rgba(14,59,54,.08);
  --gold:#C9A227;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --text:#1A1D1C;
  --text-2:#5C6360;
  --text-3:#8A908D;
  --line:rgba(14,59,54,.10);
  --line-strong:rgba(14,59,54,.20);
  --radius-card:10px;
  --radius-btn:6px;
  --shadow-sm:0 1px 2px rgba(14,59,54,.06),0 8px 24px rgba(14,59,54,.06);
  --shadow-lg:0 6px 12px rgba(14,59,54,.10),0 16px 40px rgba(14,59,54,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --ok:#2F7D5B;
  --warn:#B4761F;
  --err:#A33A2E;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  padding-bottom:76px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
p{margin:0 0 1.2em}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--text)}
ul{margin:0;padding:0;list-style:none}
button{font:inherit}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-alt{background:var(--surface)}
.section-head{margin-bottom:44px}
.section-title{
  font-size:32px;line-height:1.3;display:flex;align-items:center;gap:12px;
}
.section-title::before{content:"";width:2px;height:28px;background:var(--brand);border-radius:2px;flex:0 0 auto}
.section-desc{margin:14px 0 0;color:var(--text-2);font-size:16px;max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.06em;
  color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:5px 14px;
}
.eyebrow-line{width:16px;height:1px;background:var(--gold)}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:80;background:rgba(247,246,242,.96);
  border-bottom:1px solid var(--line);backdrop-filter:blur(8px);
}
.nav-wrap{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{
  font-size:19px;font-weight:600;letter-spacing:.01em;color:var(--brand);
  display:inline-flex;align-items:center;gap:10px;white-space:nowrap;
}
.brand:hover{text-decoration:none;color:var(--brand-dark)}
.brand-dot{width:8px;height:8px;border-radius:50%;background:var(--gold);flex:0 0 auto}
.main-nav{display:flex;align-items:center;gap:30px}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:6px 0;white-space:nowrap;
}
.nav-link:hover{color:var(--brand);text-decoration:none}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--brand);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:transparent;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:1px;background:var(--brand);transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle.open span:first-child{transform:translateY(3px) rotate(45deg)}
.nav-toggle.open span:last-child{transform:translateY(-3px) rotate(-45deg)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-size:15px;font-weight:600;line-height:1;
  padding:14px 28px;border:1px solid transparent;cursor:pointer;
  transition:background-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--brand);color:var(--bg)}
.btn-primary:hover{background:var(--brand-dark);color:var(--bg)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;
  background:none;border:none;padding:6px 0;cursor:pointer;
}
.btn-text::after{content:"→";transition:transform .22s var(--ease)}
.btn-text:hover{text-decoration:underline;text-underline-offset:4px}
.btn-text:hover::after{transform:translateX(3px)}
.btn-block{width:100%}

/* Hero */
.hero{position:relative;padding:80px 0 72px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(14,59,54,.05) 1px,transparent 1px);
  background-size:22px 22px;pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero h1{font-size:44px;line-height:1.25;letter-spacing:-.01em;margin:20px 0 18px}
.hero h1 em{font-style:normal;color:var(--brand);border-bottom:3px solid rgba(201,162,39,.45)}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px 24px}
.hero-trust{
  display:flex;flex-wrap:wrap;gap:12px 40px;margin-top:40px;padding-top:24px;
  border-top:1px solid var(--line);
}
.trust-item{font-size:13px;color:var(--text-3);letter-spacing:.02em}
.trust-item strong{display:block;font-size:22px;color:var(--gold);font-weight:700;letter-spacing:0}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);border:1px solid var(--line);
}
.hero-tag{
  position:absolute;left:-16px;bottom:20px;background:var(--surface);
  border:1px solid rgba(201,162,39,.55);border-radius:999px;
  padding:8px 18px;font-size:13px;color:var(--brand);font-weight:600;
  box-shadow:var(--shadow-sm);
}
.hero-note{position:absolute;right:16px;top:-14px;background:var(--brand);color:var(--bg);
  border-radius:999px;padding:6px 16px;font-size:12px;letter-spacing:.04em}

/* 卖点三连 */
.feature-3{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:24px;align-items:start}
.feature-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px 28px;box-shadow:var(--shadow-sm);height:100%;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.feature-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--line-strong)}
.feature-item.lead{background:var(--brand);border-color:var(--brand);color:rgba(247,246,242,.88);padding:40px 32px}
.feature-item.lead h3,.feature-item.lead .feature-num{color:var(--bg)}
.feature-item.lead .feature-num{border-color:rgba(201,162,39,.6)}
.feature-item.offset{margin-top:24px}
.feature-num{
  display:inline-block;font-size:13px;letter-spacing:.18em;color:var(--gold);font-weight:600;
  border-bottom:1px solid var(--line);padding-bottom:8px;margin-bottom:20px;
}
.feature-item h3{font-size:22px;margin-bottom:12px}
.feature-item p{margin:0;font-size:15px;color:var(--text-2)}
.feature-item.lead p{color:rgba(247,246,242,.82)}
.feature-list{margin-top:18px;display:grid;gap:8px}
.feature-list li{font-size:14px;color:var(--text-2);padding-left:16px;position:relative}
.feature-item.lead .feature-list li{color:rgba(247,246,242,.82)}
.feature-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:1px;background:var(--gold)}

/* 场景演示 */
.scenario{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:88px}
.scenario:last-child{margin-bottom:0}
.scenario.reverse .scenario-media{order:2}
.scenario-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-card);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
}
.scenario h3{font-size:22px;margin-bottom:14px}
.scenario p{color:var(--text-2);margin-bottom:16px}
.scenario-points{display:grid;gap:10px;margin-bottom:22px}
.scenario-points li{font-size:15px;color:var(--text-2);display:flex;gap:10px;align-items:flex-start}
.scenario-points li span{color:var(--gold);font-weight:700;line-height:1.8}

/* 社会认同 */
.metric-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding:32px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:56px;
}
.metric-num{font-size:34px;font-weight:700;color:var(--gold);line-height:1.2}
.metric-label{font-size:14px;color:var(--text-2);margin-top:4px}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.quote-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:32px 26px 26px;box-shadow:var(--shadow-sm);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.quote-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.quote-card::before{
  content:"";position:absolute;left:26px;top:22px;width:22px;height:1px;background:var(--gold);
  box-shadow:0 5px 0 var(--gold);
}
.quote-card p{margin:20px 0 18px;color:var(--text-2);font-size:15px}
.quote-who{font-size:13px;color:var(--text-3);letter-spacing:.02em}
.quote-who strong{display:block;color:var(--text);font-size:15px;font-weight:600;letter-spacing:0}

/* 信息卡片 */
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.info-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-sm);height:100%;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.info-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--line-strong)}
.info-link{display:flex;flex-direction:column;height:100%}
.info-link:hover{text-decoration:none;color:inherit}
.info-thumb{aspect-ratio:4/3;background:rgba(14,59,54,.06);overflow:hidden}
.info-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.info-card:hover .info-thumb img{transform:scale(1.02)}
.info-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.badge{
  align-self:flex-start;background:var(--brand-soft);color:var(--brand);
  font-size:10px;letter-spacing:.06em;border-radius:999px;padding:4px 12px;font-weight:600;
}
.info-title{
  font-size:18px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-sum{
  font-size:14px;color:var(--text-2);margin:0;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.info-meta{margin-top:auto;font-size:13px;color:var(--text-3);letter-spacing:.02em}
.info-foot{display:flex;justify-content:flex-end;margin-top:32px}
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--radius-card);
  padding:64px 24px;text-align:center;background:var(--surface);
}
.empty-icon{width:44px;height:1px;background:var(--line-strong);margin:0 auto 20px;position:relative}
.empty-icon::before,.empty-icon::after{content:"";position:absolute;width:1px;height:44px;background:var(--line-strong);top:-21px}
.empty-icon::before{left:12px}
.empty-icon::after{right:12px}
.empty-state p{color:var(--text-2);margin-bottom:14px}

/* FAQ */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:22px 40px 22px 0;position:relative;
  font-size:18px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  color:var(--brand);font-size:22px;font-weight:400;line-height:1;
}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:hover{color:var(--brand)}
.faq-answer{padding:0 40px 26px 0;color:var(--text-2);font-size:15px}
.faq-answer p:last-child{margin-bottom:0}

/* CTA 带 */
.cta-band{background:var(--brand);color:rgba(247,246,242,.9);padding:64px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:10px}
.cta-band p{margin:0;color:rgba(247,246,242,.78);font-size:15px}
.cta-band .btn-primary{background:var(--gold);color:#20261F}
.cta-band .btn-primary:hover{background:#B7901F;color:#20261F}

/* 页脚 */
.site-footer{background:var(--brand);color:rgba(247,246,242,.78);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px}
.footer-col{padding-right:24px}
.footer-col + .footer-col{border-left:1px solid rgba(247,246,242,.12);padding-left:32px}
.footer-brand{font-size:18px;color:#fff;font-weight:600;margin-bottom:14px}
.footer-grid p{font-size:14px;margin-bottom:10px;line-height:1.8}
.footer-title{font-size:13px;letter-spacing:.08em;color:rgba(247,246,242,.55);margin-bottom:16px}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:14px;color:rgba(247,246,242,.78)}
.footer-links a:hover{color:var(--gold);text-decoration:none}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(247,246,242,.12);padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(247,246,242,.6);
}

/* 底部固定转化条 */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  background:rgba(247,246,242,.94);border-top:1px solid var(--line);
  backdrop-filter:blur(8px);
}
.sticky-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.sticky-text{font-size:14px;color:var(--text-2)}
.sticky-text strong{color:var(--brand)}

/* 淡入动效 */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

@media (max-width:1199px){
  .hero h1{font-size:38px}
  .feature-3{grid-template-columns:1fr 1fr;gap:20px}
  .feature-item.lead{grid-column:1 / -1}
  .feature-item.offset{margin-top:0}
}
@media (max-width:991px){
  .container{max-width:100%}
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;left:0;right:0;top:72px;bottom:0;background:var(--bg);
    flex-direction:column;align-items:flex-start;gap:0;padding:16px 24px 32px;
    overflow-y:auto;transform:translateY(-10px);opacity:0;visibility:hidden;
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  }
  .main-nav.open{opacity:1;visibility:visible;transform:none}
  .nav-link{width:100%;padding:18px 0;border-bottom:1px solid var(--line);font-size:16px}
  .nav-link::after{display:none}
  .nav-link.active{color:var(--brand)}
  .hero{padding:56px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:32px}
  .hero-sub{font-size:16px}
  .section{padding:64px 0}
  .section-title{font-size:26px}
  .scenario{grid-template-columns:1fr;gap:28px;margin-bottom:56px}
  .scenario.reverse .scenario-media{order:0}
  .metric-bar{grid-template-columns:repeat(2,1fr);gap:20px}
  .quote-grid{grid-template-columns:1fr}
  .info-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-col{padding-right:0}
  .footer-col + .footer-col{border-left:0;padding-left:0}
  .cta-band{padding:48px 0}
  .cta-band h2{font-size:23px}
}
@media (max-width:767px){
  body{font-size:15px;padding-bottom:64px}
  .container{padding:0 18px}
  .hero{text-align:center}
  .hero-sub{margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center}
  .hero-trust{justify-content:center;text-align:center;gap:16px 28px}
  .hero-tag{left:12px;bottom:12px}
  .hero-note{right:12px}
  .section{padding:56px 0}
  .feature-3{grid-template-columns:1fr}
  .info-grid{grid-template-columns:1fr}
  .feature-item{padding:24px 20px}
  .faq-item summary{font-size:17px;padding:18px 34px 18px 0}
  .faq-answer{padding-right:0}
  .sticky-inner{height:56px;padding:0 16px;gap:10px}
  .sticky-text{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .btn{padding:12px 20px;font-size:14px}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  .hero h1{font-size:27px}
  .section-title{font-size:22px}
  .footer-grid{grid-template-columns:1fr}
  .metric-num{font-size:26px}
  .sticky-text{display:none}
  .sticky-inner{justify-content:center}
  .sticky-inner .btn{width:100%}
}

/* roulang page: category1 */
:root{
  --brand:#0E3B36;
  --brand-dark:#0A2C28;
  --brand-soft:rgba(14,59,54,.08);
  --brand-line:rgba(14,59,54,.10);
  --brand-line-strong:rgba(14,59,54,.20);
  --gold:#C9A227;
  --bg:#F7F6F2;
  --bg-card:#FFFFFF;
  --text:#1A1D1C;
  --text-sub:#5C6360;
  --text-mute:#8A908D;
  --ok:#2F7D5B;
  --warn:#B4761F;
  --err:#A33A2E;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow:0 1px 2px rgba(14,59,54,.06),0 8px 24px rgba(14,59,54,.06);
  --shadow-hover:0 6px 12px rgba(14,59,54,.10),0 16px 40px rgba(14,59,54,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec-gap:96px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--brand);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--text);}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;}

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

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--brand-line);
}
.nav-wrap{
  height:72px;
  display:flex;
  align-items:center;
  gap:32px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:600;
  letter-spacing:-.01em;
  color:var(--brand);
  white-space:nowrap;
}
.brand-dot{
  width:9px;height:9px;border-radius:50%;
  background:var(--gold);
  display:inline-block;
  flex:0 0 auto;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:auto;
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:24px 0;
  font-size:15px;
  color:var(--text-sub);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:18px;
  height:2px;
  background:var(--brand);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.nav-actions{
  display:flex;
  align-items:center;
  gap:16px;
  margin-left:8px;
}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  background:transparent;
  border:1px solid var(--brand-line);
  border-radius:var(--radius-btn);
  padding:0;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:6px;
}
.nav-toggle span{
  display:block;
  width:18px;height:1.5px;
  background:var(--brand);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.75px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.75px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:15px;
  font-weight:500;
  line-height:1;
  padding:14px 28px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{background:var(--brand);color:var(--bg);}
.btn-primary:hover{background:var(--brand-dark);color:var(--bg);transform:translateY(-1px);}
.btn-primary:focus-visible{outline:2px solid var(--gold);outline-offset:2px;}
.btn-ghost{
  background:transparent;
  border-color:var(--brand);
  color:var(--brand);
}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-link-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--brand);
  font-size:15px;
  font-weight:500;
  padding:0;
  background:none;border:none;
}
.btn-link-arrow .arw{transition:transform .22s var(--ease);}
.btn-link-arrow:hover{text-decoration:underline;text-underline-offset:4px;}
.btn-link-arrow:hover .arw{transform:translateX(3px);}

/* ---------- 徽章 ---------- */
.badge-soft{
  display:inline-block;
  font-size:10px;
  letter-spacing:.06em;
  line-height:1;
  padding:6px 10px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand);
}
.badge-line{
  display:inline-block;
  font-size:11px;
  line-height:1;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid var(--gold);
  color:var(--brand);
  background:rgba(201,162,39,.08);
}

/* ---------- 面包屑 ---------- */
.crumb{
  padding:22px 0 0;
  font-size:13px;
  color:var(--text-mute);
  letter-spacing:.02em;
}
.crumb a{color:var(--text-mute);}
.crumb a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:4px;}
.crumb .sep{margin:0 8px;color:rgba(14,59,54,.28);}
.crumb .cur{color:var(--text-sub);}

/* ---------- 页面头部 ---------- */
.page-hero{padding:40px 0 0;}
.page-hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:48px;
  align-items:center;
  padding-bottom:48px;
  border-bottom:1px solid var(--brand-line);
}
.page-hero h1{
  font-size:44px;
  line-height:1.25;
  letter-spacing:-.01em;
  margin:18px 0 16px;
}
.page-hero .lead{
  font-size:17px;
  color:var(--text-sub);
  max-width:560px;
  margin-bottom:24px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:20px;align-items:center;}
.page-hero-media{
  position:relative;
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow);
  border:1px solid var(--brand-line);
}
.page-hero-media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
}
.page-hero-media .tag{
  position:absolute;
  left:14px;top:14px;
}

/* ---------- 通用板块 ---------- */
.section{padding:var(--sec-gap) 0 0;}
.section:last-of-type{padding-bottom:var(--sec-gap);}
.section-head{margin-bottom:40px;max-width:760px;}
.section-title{
  position:relative;
  font-size:32px;
  line-height:1.3;
  padding-left:18px;
}
.section-title::before{
  content:"";
  position:absolute;
  left:0;top:6px;
  width:2px;height:28px;
  background:var(--brand);
}
.section-sub{
  margin-top:14px;
  color:var(--text-sub);
  font-size:16px;
}

/* ---------- 三项重点 ---------- */
.trio-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.trio-card{
  background:var(--bg-card);
  border:1px solid var(--brand-line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  display:flex;
  flex-direction:column;
}
.trio-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-hover);
  border-color:var(--brand-line-strong);
}
.trio-card .thumb{overflow:hidden;}
.trio-card .thumb img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform .4s var(--ease);
}
.trio-card:hover .thumb img{transform:scale(1.03);}
.trio-card .body{padding:24px;}
.trio-card .num{
  display:block;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--gold);
  font-weight:600;
  margin-bottom:10px;
}
.trio-card h3{font-size:22px;margin-bottom:10px;}
.trio-card p{color:var(--text-sub);font-size:15px;}
.trio-card.wide{
  grid-column:1 / -1;
  flex-direction:row;
}
.trio-card.wide .thumb{flex:0 0 44%;}
.trio-card.wide .thumb img{height:100%;aspect-ratio:auto;min-height:280px;}
.trio-card.wide .body{
  flex:1;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:36px;
}
.mini-list{margin-top:16px;display:grid;gap:8px;}
.mini-list li{
  display:flex;
  gap:10px;
  font-size:14px;
  color:var(--text-sub);
  line-height:1.7;
}
.mini-list li::before{
  content:"";
  flex:0 0 auto;
  width:6px;height:6px;
  margin-top:9px;
  border-radius:50%;
  background:var(--gold);
}

/* ---------- 安装步骤 ---------- */
.steps-band{
  background:var(--bg-card);
  border:1px solid var(--brand-line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow);
  padding:40px;
}
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  counter-reset:step;
}
.step-item{
  position:relative;
  padding-top:26px;
  border-top:2px solid var(--brand-line);
}
.step-item::before{
  content:"";
  position:absolute;
  top:-2px;left:0;
  width:36px;height:2px;
  background:var(--gold);
}
.step-item .idx{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--gold);
  font-weight:600;
}
.step-item h3{font-size:18px;margin:10px 0 8px;}
.step-item p{font-size:14px;color:var(--text-sub);margin:0;}

/* ---------- 设备要求 ---------- */
.spec-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.spec-card{
  background:var(--bg-card);
  border:1px solid var(--brand-line);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.spec-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-hover);
  border-color:var(--brand-line-strong);
}
.spec-card h3{font-size:18px;margin:12px 0 10px;}
.spec-card p{font-size:14px;color:var(--text-sub);margin:0;}
.spec-figure{
  font-size:26px;
  font-weight:600;
  color:var(--gold);
  letter-spacing:-.01em;
}

/* ---------- FAQ ---------- */
.faq-list{
  border-top:1px solid var(--brand-line);
}
.faq-item{border-bottom:1px solid var(--brand-line);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 4px;
  font-size:18px;
  font-weight:600;
  color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  font-size:22px;
  font-weight:400;
  color:var(--brand);
  line-height:1;
  transition:transform .22s var(--ease),color .22s var(--ease);
}
.faq-item[open] summary::after{content:"−";color:var(--gold);}
.faq-item .answer{
  padding:0 4px 24px;
  color:var(--text-sub);
  font-size:15px;
  max-width:860px;
}

/* ---------- CTA 带 ---------- */
.cta-band{
  background:var(--brand);
  color:var(--bg);
  margin-top:var(--sec-gap);
  padding:56px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
}
.cta-band h2{
  color:var(--bg);
  font-size:28px;
  line-height:1.35;
}
.cta-band p{
  color:rgba(247,246,242,.78);
  font-size:15px;
  margin-top:10px;
  max-width:620px;
}
.cta-band .btn-primary{
  background:var(--bg);
  color:var(--brand);
  flex:0 0 auto;
}
.cta-band .btn-primary:hover{background:#ffffff;color:var(--brand-dark);}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--brand);
  color:rgba(247,246,242,.82);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:0;
}
.footer-col{
  padding:0 28px;
  border-left:1px solid rgba(247,246,242,.12);
}
.footer-col:first-child{padding-left:0;border-left:none;}
.footer-brand{
  color:var(--bg);
  font-size:19px;
  font-weight:600;
  margin-bottom:12px;
}
.footer-col p{font-size:14px;line-height:1.8;margin:0;color:rgba(247,246,242,.72);}
.footer-title{
  color:var(--bg);
  font-size:14px;
  font-weight:600;
  letter-spacing:.04em;
  margin-bottom:14px;
}
.footer-links{display:grid;gap:10px;}
.footer-links a,.footer-links span{font-size:14px;color:rgba(247,246,242,.72);}
.footer-links a:hover{color:var(--gold);}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid rgba(247,246,242,.12);
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(247,246,242,.6);
  letter-spacing:.02em;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.in{
  opacity:1;transform:none;
  transition:opacity .4s var(--ease),transform .4s var(--ease);
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{max-width:960px;}
  .main-nav{gap:20px;}
}
@media (max-width:991px){
  .container{max-width:100%;}
  .nav-toggle{display:flex;}
  .main-nav{
    position:absolute;
    left:0;right:0;top:72px;
    background:var(--bg);
    border-bottom:1px solid var(--brand-line);
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:8px 24px 20px;
    margin-left:0;
    display:none;
  }
  .main-nav.open{display:flex;}
  .nav-link{padding:18px 0;font-size:16px;width:100%;}
  .nav-link::after{bottom:10px;}
  .nav-wrap{gap:16px;}
  .page-hero h1{font-size:34px;}
  .page-hero-grid{grid-template-columns:1fr;gap:32px;}
  .steps{grid-template-columns:1fr 1fr;}
  .spec-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 0;}
  .footer-col{padding:0 20px;}
  .footer-col:nth-child(odd){padding-left:0;border-left:none;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:767px){
  :root{--sec-gap:56px;}
  .page-hero{padding:28px 0 0;}
  .page-hero h1{font-size:28px;}
  .page-hero .lead{font-size:15px;}
  .page-hero-grid{padding-bottom:36px;}
  .section-title{font-size:22px;padding-left:14px;}
  .section-title::before{height:22px;top:4px;}
  .trio-grid{grid-template-columns:1fr;}
  .trio-card.wide{flex-direction:column;}
  .trio-card.wide .thumb{flex:none;}
  .trio-card.wide .thumb img{min-height:0;aspect-ratio:16/9;}
  .trio-card.wide .body{padding:24px;}
  .steps{grid-template-columns:1fr;}
  .steps-band{padding:24px;}
  .spec-grid{grid-template-columns:1fr;}
  .cta-band{padding:40px 0;}
  .cta-band h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px 0;}
  .footer-col{padding:0 !important;border-left:none !important;border-top:1px solid rgba(247,246,242,.12);padding-top:22px !important;}
  .footer-col:first-child{border-top:none;padding-top:0 !important;}
  .hero-actions{gap:14px;}
}
@media (max-width:575px){
  .container{padding-left:18px;padding-right:18px;}
  body{font-size:15px;}
  .brand{font-size:17px;}
  .page-hero h1{font-size:26px;}
  .trio-card .body,.spec-card{padding:18px;}
  .btn{padding:13px 22px;font-size:15px;}
  .faq-item summary{font-size:16px;padding:18px 2px;}
  .faq-item .answer{padding:0 2px 20px;}
}

/* roulang page: article */
:root{
  --ink:#0E3B36;
  --ink-deep:#0A2C28;
  --gold:#C9A227;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --text:#1A1D1C;
  --muted:#5C6360;
  --faint:#8A908D;
  --line:rgba(14,59,54,.10);
  --line-strong:rgba(14,59,54,.20);
  --ok:#2F7D5B;
  --warn:#B4761F;
  --err:#A33A2E;
  --radius:10px;
  --radius-sm:6px;
  --shadow:0 1px 2px rgba(14,59,54,.06), 0 8px 24px rgba(14,59,54,.06);
  --shadow-hover:0 6px 12px rgba(14,59,54,.10), 0 16px 40px rgba(14,59,54,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--ink);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1.2em;}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--text);}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(120%) blur(6px);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:600;letter-spacing:.01em;color:var(--ink);white-space:nowrap;
}
.brand:hover{text-decoration:none;color:var(--ink);}
.brand-dot{width:9px;height:9px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 4px rgba(201,162,39,.16);flex:0 0 auto;}
.main-nav{display:flex;align-items:center;gap:30px;}
.nav-link{position:relative;display:inline-block;font-size:15px;color:var(--muted);padding:6px 0;}
.nav-link:hover{color:var(--ink);text-decoration:none;}
.nav-link.active{color:var(--ink);font-weight:600;}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;background:var(--ink);border-radius:2px;}
.nav-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{display:none;width:40px;height:40px;padding:9px 8px;border-radius:var(--radius-sm);}
.nav-toggle span{display:block;height:1.5px;width:22px;background:var(--ink);margin:5px 0;border-radius:2px;transition:transform .25s var(--ease),opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-sm);border:1px solid transparent;
  font-size:15px;font-weight:500;line-height:1;padding:14px 28px;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--ink);color:#F7F6F2;border-color:var(--ink);}
.btn-primary:hover{background:var(--ink-deep);border-color:var(--ink-deep);color:#F7F6F2;transform:translateY(1px);}
.btn-primary:focus-visible{outline:2px solid var(--gold);outline-offset:2px;}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-outline:hover{background:rgba(14,59,54,.08);color:var(--ink);}
.btn-light{background:#F7F6F2;color:var(--ink);border-color:#F7F6F2;}
.btn-light:hover{background:#ffffff;color:var(--ink);transform:translateY(1px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.link-btn{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:500;color:var(--ink);}
.link-btn svg{transition:transform .22s var(--ease);flex:0 0 auto;}
.link-btn:hover{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;}
.link-btn:hover svg{transform:translateX(3px);}

/* ---------- badge ---------- */
.badge-soft{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;
  background:rgba(14,59,54,.08);color:var(--ink);
  font-size:10px;font-weight:600;letter-spacing:.08em;line-height:1.6;
}

/* ---------- main ---------- */
.page-main{padding:44px 0 0;}

.breadcrumb-line{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--faint);letter-spacing:.02em;line-height:1.7;
}
.breadcrumb-line a{color:var(--faint);}
.breadcrumb-line a:hover{color:var(--ink);text-decoration:none;}
.breadcrumb-line .sep{color:rgba(14,59,54,.28);}
.breadcrumb-line .current{
  color:var(--muted);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

.article-head{margin-top:26px;padding-bottom:28px;border-bottom:1px solid var(--line);}
.article-title{
  font-size:44px;line-height:1.25;font-weight:600;letter-spacing:-.01em;
  margin:18px 0 18px;word-break:break-word;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13px;color:var(--faint);letter-spacing:.02em;}
.article-meta .meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(14,59,54,.22);display:inline-block;}

/* ---------- article layout ---------- */
.article-grid{
  display:grid;grid-template-columns:minmax(0,760px) 300px;
  justify-content:space-between;gap:56px;
  padding-top:44px;
}
.article-main{min-width:0;}
.article-body{font-size:16px;line-height:1.8;color:var(--text);word-break:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  position:relative;font-size:26px;line-height:1.35;font-weight:600;
  margin:40px 0 18px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.3em;width:2px;height:24px;background:var(--ink);border-radius:2px;
}
.article-body h3{font-size:20px;line-height:1.45;margin:28px 0 14px;}
.article-body h4{font-size:17px;margin:24px 0 12px;}
.article-body p{margin:0 0 1.2em;}
.article-body a{color:var(--ink);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;}
.article-body a:hover{color:var(--ink-deep);}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:22px;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:8px 0;line-height:1.8;}
.article-body img{
  max-width:100%;height:auto;margin:24px auto;border-radius:8px;
}
.article-body blockquote{
  margin:24px 0;padding:16px 22px;
  border-left:3px solid var(--ink);
  background:rgba(14,59,54,.04);
  border-radius:0 8px 8px 0;
  color:var(--muted);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body code{
  background:rgba(14,59,54,.06);padding:2px 6px;border-radius:4px;
  font-size:14px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.article-body pre{
  background:#0E3B36;color:#E7EAE8;padding:20px;border-radius:8px;
  overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;}
.article-body th{background:rgba(14,59,54,.05);font-weight:600;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

.article-return{
  margin-top:48px;padding-top:28px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
}

/* ---------- sidebar ---------- */
.article-side{min-width:0;}
.side-card{
  position:sticky;top:96px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);
}
.side-title{font-size:14px;font-weight:600;color:var(--ink);letter-spacing:.04em;margin-bottom:16px;}
.side-list{display:flex;flex-direction:column;}
.side-list li{border-top:1px solid var(--line);}
.side-list li:first-child{border-top:0;}
.side-list a{display:block;padding:12px 0;font-size:14px;color:var(--muted);}
.side-list a:hover{color:var(--ink);text-decoration:none;padding-left:4px;}
.side-note{margin-top:18px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--faint);line-height:1.8;}
.side-btn{width:100%;margin-top:16px;}

/* ---------- related ---------- */
.rel-section{margin-top:96px;}
.section-title{
  position:relative;font-size:32px;line-height:1.3;font-weight:600;
  padding-left:18px;margin-bottom:32px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:.3em;width:2px;height:28px;background:var(--ink);border-radius:2px;
}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{
  display:flex;flex-direction:column;gap:12px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rel-card:hover{
  transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--line-strong);
  text-decoration:none;color:inherit;
}
.rel-card h3{font-size:17px;line-height:1.55;font-weight:600;}
.rel-card .rel-time{font-size:13px;color:var(--faint);letter-spacing:.02em;margin-top:auto;}

/* ---------- empty ---------- */
.empty-state{
  max-width:640px;margin:64px auto 96px;padding:72px 32px;text-align:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
}
.empty-mark{
  width:56px;height:56px;margin:0 auto 24px;border:1px solid var(--line-strong);border-radius:50%;position:relative;
}
.empty-mark::before,.empty-mark::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--line-strong);transform-origin:center;
}
.empty-mark::before{width:20px;height:1px;transform:translate(-50%,-50%) rotate(45deg);}
.empty-mark::after{width:20px;height:1px;transform:translate(-50%,-50%) rotate(-45deg);}
.empty-title{font-size:28px;line-height:1.3;font-weight:600;margin-bottom:14px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:28px;}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink);color:#F7F6F2;margin-top:96px;padding:64px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-text h2{color:#F7F6F2;font-size:28px;line-height:1.35;font-weight:600;margin-bottom:10px;}
.cta-text p{color:rgba(247,246,242,.76);font-size:15px;margin:0;max-width:620px;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:rgba(247,246,242,.76);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:24px;padding-bottom:40px;}
.footer-col{padding-left:24px;border-left:1px solid rgba(247,246,242,.12);min-width:0;}
.footer-col:first-child{padding-left:0;border-left:0;}
.footer-brand{font-size:18px;font-weight:600;color:#F7F6F2;margin-bottom:12px;letter-spacing:.01em;}
.footer-col p{font-size:14px;line-height:1.85;margin:0;color:rgba(247,246,242,.7);}
.footer-title{font-size:14px;font-weight:600;color:#F7F6F2;margin-bottom:14px;letter-spacing:.04em;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a,.footer-links span{font-size:14px;color:rgba(247,246,242,.72);}
.footer-links a:hover{color:var(--gold);text-decoration:none;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(247,246,242,.12);padding:20px 0 28px;
  font-size:13px;color:rgba(247,246,242,.55);letter-spacing:.02em;
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .article-grid{grid-template-columns:minmax(0,1fr) 280px;gap:40px;}
  .article-title{font-size:38px;}
}
@media (max-width:991.98px){
  .main-nav{
    position:fixed;left:0;right:0;top:72px;bottom:0;
    background:var(--bg);flex-direction:column;align-items:flex-start;gap:0;
    padding:16px 24px 40px;overflow-y:auto;
    transform:translateX(100%);transition:transform .28s var(--ease);
    border-top:1px solid var(--line);
  }
  .main-nav.open{transform:translateX(0);}
  .main-nav .nav-link{width:100%;padding:18px 0;font-size:17px;border-bottom:1px solid var(--line);color:var(--text);}
  .main-nav .nav-link.active::after{display:none;}
  .main-nav .nav-link.active{color:var(--ink);}
  .nav-toggle{display:block;}
  .nav-actions .btn-sm{padding:9px 16px;font-size:13px;}
  .article-grid{grid-template-columns:1fr;gap:0;padding-top:36px;}
  .article-side{display:none;}
  .article-title{font-size:30px;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .section-title{font-size:24px;}
  .section-title::before{height:22px;}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px;}
  .footer-col{padding-left:0;border-left:0;}
  .cta-band{padding:48px 0;}
  .cta-text h2{font-size:22px;}
}
@media (max-width:575.98px){
  .container{padding-left:18px;padding-right:18px;}
  .brand{font-size:16px;}
  .nav-actions{gap:8px;}
  .nav-actions .btn-sm{padding:8px 12px;font-size:12px;}
  .article-title{font-size:26px;}
  .article-meta{font-size:12px;gap:8px 14px;}
  .article-body{font-size:15px;}
  .rel-grid{grid-template-columns:1fr;}
  .rel-section{margin-top:56px;}
  .section-title{font-size:20px;padding-left:14px;margin-bottom:24px;}
  .section-title::before{height:18px;}
  .empty-state{margin:40px auto 56px;padding:52px 20px;}
  .empty-title{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{justify-content:flex-start;font-size:12px;}
  .cta-band{margin-top:56px;padding:40px 0;}
  .cta-inner{gap:20px;}
  .cta-text h2{font-size:20px;}
  .cta-band .btn{width:100%;}
  .article-return{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
:root{
  --brand:#0E3B36;
  --brand-dark:#0A2C28;
  --brand-soft:rgba(14,59,54,.08);
  --brand-line:rgba(14,59,54,.10);
  --brand-line-strong:rgba(14,59,54,.20);
  --gold:#C9A227;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --text:#1A1D1C;
  --text-2:#5C6360;
  --text-3:#8A908D;
  --ok:#2F7D5B;
  --warn:#B4761F;
  --err:#A33A2E;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow-sm:0 1px 2px rgba(14,59,54,.06), 0 8px 24px rgba(14,59,54,.06);
  --shadow-lg:0 6px 12px rgba(14,59,54,.10), 0 16px 40px rgba(14,59,54,.10);
  --gutter:24px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--brand);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--text);}
h1{font-size:44px;line-height:1.25;letter-spacing:-.01em;}
h2{font-size:32px;line-height:1.3;}
h3{font-size:22px;line-height:1.4;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-white{background:var(--surface);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{position:relative;padding-left:18px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:28px;background:var(--brand);border-radius:2px;
}
.section-head .lead{margin-top:14px;color:var(--text-2);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.02em;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:5px 14px;margin-bottom:18px;
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(247,246,242,.94);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--brand-line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:24px;}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:19px;font-weight:600;letter-spacing:.01em;color:var(--brand);white-space:nowrap;
}
.brand:hover{color:var(--brand-dark);}
.brand-dot{width:8px;height:8px;border-radius:50%;background:var(--gold);display:inline-block;}
.main-nav{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:24px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--brand);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--brand-line);
  background:transparent;border-radius:6px;padding:0;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:1.5px;background:var(--brand);transition:transform .22s var(--ease),opacity .22s var(--ease);}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.25px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.25px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:500;line-height:1;cursor:pointer;
  padding:14px 28px;transition:all .22s var(--ease);
}
.btn-primary{background:var(--brand);color:#F7F6F2;}
.btn-primary:hover{background:var(--brand-dark);color:#F7F6F2;transform:translateY(-1px);}
.btn-primary:focus-visible{box-shadow:0 0 0 2px var(--gold);}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px);}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--brand);font-size:15px;font-weight:500;padding:0;background:none;border:0;cursor:pointer;
}
.btn-text i{transition:transform .22s var(--ease);font-size:13px;}
.btn-text:hover{text-decoration:underline;color:var(--brand-dark);}
.btn-text:hover i{transform:translateX(3px);}

/* ---------- 顶部区块 ---------- */
.page-hero{padding:72px 0 8px;}
.page-hero-grid{display:grid;grid-template-columns:1.35fr .85fr;gap:48px;align-items:center;}
.page-hero h1{margin-bottom:18px;}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.page-hero .sub{font-size:17px;color:var(--text-2);max-width:620px;}
.hero-rule{height:1px;background:var(--brand-line);margin:32px 0 0;}
.hero-meta{display:flex;flex-wrap:wrap;gap:28px;margin-top:22px;font-size:13px;color:var(--text-3);letter-spacing:.02em;}
.hero-meta strong{color:var(--gold);font-size:15px;font-weight:600;margin-right:6px;}
.media-frame{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--brand-line);
  background:var(--surface);box-shadow:var(--shadow-sm);position:relative;
}
.media-frame.ratio-43{aspect-ratio:4/3;}
.media-frame img{width:100%;height:100%;object-fit:cover;}
.media-tag{
  position:absolute;left:16px;bottom:16px;
  background:rgba(247,246,242,.94);color:var(--brand);
  border:1px solid var(--gold);border-radius:999px;
  font-size:12px;padding:5px 14px;letter-spacing:.02em;
}

/* ---------- 双栏 + 信息卡 ---------- */
.duo-grid{display:grid;grid-template-columns:minmax(0,1fr) 352px;gap:48px;align-items:start;}
.content-col .block + .block{margin-top:56px;}
.split-block{display:grid;grid-template-columns:300px minmax(0,1fr);gap:32px;align-items:start;}
.split-block .media-frame.ratio-43{box-shadow:var(--shadow-sm);}
.block h3{margin-bottom:14px;}
.block .kicker{font-size:13px;letter-spacing:.06em;color:var(--gold);font-weight:600;margin-bottom:10px;display:block;}
.check-list{margin-top:18px;}
.check-list li{
  position:relative;padding-left:22px;margin-bottom:10px;color:var(--text-2);font-size:15px;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;
  border-radius:2px;background:var(--brand);opacity:.65;
}
.aside-col{position:sticky;top:96px;}
.info-card{
  background:var(--surface);border:1px solid var(--brand-line);
  border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-sm);
}
.info-card h3{font-size:20px;margin-bottom:6px;}
.info-card .card-note{font-size:13px;color:var(--text-3);margin-bottom:20px;}
.point-list li{
  display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed var(--brand-line);
  font-size:15px;color:var(--text-2);line-height:1.7;
}
.point-list li:last-child{border-bottom:0;}
.point-list .num{
  flex:0 0 auto;color:var(--gold);font-weight:600;font-size:13px;letter-spacing:.04em;padding-top:3px;
}
.info-card .btn{margin-top:22px;}
.card-foot{font-size:13px;color:var(--text-3);margin-top:14px;text-align:center;}

/* ---------- 安全能力网格 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.feature-card{
  background:var(--surface);border:1px solid var(--brand-line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-sm);transition:all .22s var(--ease);
}
.feature-card:hover{transform:translateY(-3px);border-color:var(--brand-line-strong);box-shadow:var(--shadow-lg);}
.feature-card .icon{
  width:40px;height:40px;border-radius:8px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:16px;
}
.feature-card h3{font-size:18px;margin-bottom:8px;}
.feature-card p{font-size:14.5px;color:var(--text-2);margin:0;}

/* ---------- 风险提示列表 ---------- */
.risk-wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.risk-item{
  background:var(--surface);border:1px solid var(--brand-line);border-left:3px solid var(--gold);
  border-radius:var(--radius-card);padding:24px;
}
.risk-item .badge-soft{margin-bottom:14px;}
.risk-item h3{font-size:18px;margin-bottom:10px;}
.risk-item p{font-size:14.5px;color:var(--text-2);margin:0;}

/* ---------- 徽章 / 数据条 ---------- */
.badge-soft{
  display:inline-block;background:var(--brand-soft);color:var(--brand);
  border-radius:999px;padding:4px 12px;font-size:10px;letter-spacing:.08em;line-height:1.6;
}
.stat-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  background:var(--surface);border:1px solid var(--brand-line);border-radius:var(--radius-card);
  padding:36px 32px;
}
.stat-item .num{font-size:30px;font-weight:600;color:var(--brand);line-height:1.1;}
.stat-item .num span{color:var(--gold);}
.stat-item .label{font-size:14px;color:var(--text-2);margin-top:8px;}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--brand);color:#F7F6F2;}
.cta-band .inner{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:56px 0;flex-wrap:wrap;
}
.cta-band h2{color:#F7F6F2;font-size:28px;margin-bottom:10px;}
.cta-band p{color:rgba(247,246,242,.78);margin:0;font-size:15px;max-width:620px;}
.cta-band .btn-light{background:#F7F6F2;color:var(--brand);}
.cta-band .btn-light:hover{background:#ffffff;color:var(--brand-dark);transform:translateY(-1px);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand);color:rgba(247,246,242,.82);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:0;}
.footer-col{padding:0 24px;border-left:1px solid rgba(247,246,242,.12);}
.footer-col:first-child{border-left:0;padding-left:0;}
.footer-brand{font-size:19px;font-weight:600;color:#F7F6F2;margin-bottom:14px;}
.footer-col p{font-size:14.5px;line-height:1.85;color:rgba(247,246,242,.72);margin:0;}
.footer-title{font-size:13px;letter-spacing:.06em;color:var(--gold);margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:12px;font-size:14.5px;}
.footer-links a{color:rgba(247,246,242,.82);}
.footer-links a:hover{color:var(--gold);}
.footer-links span{color:rgba(247,246,242,.62);font-size:14px;}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(247,246,242,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(247,246,242,.6);letter-spacing:.02em;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  h1{font-size:38px;}
  .container{max-width:960px;}
  .duo-grid{grid-template-columns:minmax(0,1fr) 320px;gap:32px;}
  .feature-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991.98px){
  .nav-toggle{display:flex;}
  .main-nav{
    position:fixed;inset:72px 0 0 0;background:var(--bg);
    flex-direction:column;align-items:flex-start;gap:0;
    padding:24px;transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .22s var(--ease),transform .22s var(--ease);
    border-top:1px solid var(--brand-line);overflow-y:auto;
  }
  .main-nav.is-open{opacity:1;transform:none;pointer-events:auto;}
  .nav-link{width:100%;padding:18px 0;font-size:17px;border-bottom:1px solid var(--brand-line);}
  .nav-link::after{display:none;}
  .nav-link.active{color:var(--brand);}
  .page-hero-grid{grid-template-columns:1fr;gap:32px;}
  .duo-grid{grid-template-columns:1fr;gap:40px;}
  .aside-col{position:static;}
  .split-block{grid-template-columns:1fr;gap:20px;}
  .risk-wrap{grid-template-columns:1fr;}
  .stat-bar{grid-template-columns:repeat(2,1fr);gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;row-gap:36px;}
  .footer-col{padding:0;border-left:0;}
  .footer-col:nth-child(3),.footer-col:nth-child(4){padding-top:24px;border-top:1px solid rgba(247,246,242,.12);}
}
@media (max-width:767.98px){
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  body{font-size:15px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .page-hero{padding:48px 0 0;}
  .page-hero-grid{text-align:left;}
  .hero-meta{gap:18px;}
  .cta-band .inner{padding:44px 0;flex-direction:column;align-items:flex-start;}
  .cta-band h2{font-size:22px;}
  .feature-grid{grid-template-columns:1fr;}
  .stat-item .num{font-size:26px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-col:nth-child(2){padding-top:24px;border-top:1px solid rgba(247,246,242,.12);}
}
@media (max-width:575.98px){
  .container{padding:0 18px;}
  .brand{font-size:17px;}
  .info-card,.feature-card,.risk-item{padding:18px;}
  .btn{padding:13px 22px;width:100%;}
  .btn-sm{width:auto;}
  .nav-actions .btn{width:auto;}
  .stat-bar{padding:24px 18px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --brand:#0E3B36;
  --brand-deep:#0A2C28;
  --brand-soft:rgba(14,59,54,.08);
  --gold:#C9A227;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --text:#1A1D1C;
  --text-2:#5C6360;
  --text-3:#8A908D;
  --line:rgba(14,59,54,.10);
  --line-strong:rgba(14,59,54,.20);
  --ok:#2F7D5B;
  --warn:#B4761F;
  --err:#A33A2E;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow:0 1px 2px rgba(14,59,54,.06),0 8px 24px rgba(14,59,54,.06);
  --shadow-hi:0 6px 12px rgba(14,59,54,.10),0 16px 40px rgba(14,59,54,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1200px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em;color:var(--text);}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(180%) blur(6px);
}
.nav-wrap{
  min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:18px;font-weight:600;letter-spacing:-.01em;white-space:nowrap;
}
.brand:hover{text-decoration:none;color:var(--brand);}
.brand-dot{
  width:9px;height:9px;border-radius:50%;background:var(--gold);flex:0 0 auto;
  box-shadow:0 0 0 4px rgba(201,162,39,.16);
}
.main-nav{display:flex;align-items:center;gap:30px;}
.nav-link{
  position:relative;font-size:15px;color:var(--text-2);padding:6px 0;white-space:nowrap;
}
.nav-link:hover{color:var(--brand);text-decoration:none;}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:transparent;
  transition:background .22s var(--ease);
}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{background:var(--brand);}
.nav-actions{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;width:42px;height:42px;border:0;background:transparent;padding:0;
  flex-direction:column;justify-content:center;align-items:flex-end;gap:6px;cursor:pointer;
}
.nav-toggle span{display:block;width:24px;height:1.5px;background:var(--brand);transition:transform .22s var(--ease);}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.75px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.75px) rotate(-45deg);}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);border:1px solid transparent;
  padding:14px 28px;font-size:15px;font-weight:600;cursor:pointer;
  transition:background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
  text-decoration:none;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn-primary{background:var(--brand);color:#F7F6F2;}
.btn-primary:hover{background:var(--brand-deep);color:#F7F6F2;}
.btn-primary:focus-visible{outline:2px solid var(--gold);outline-offset:2px;}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand);
  padding:4px 0;border:0;background:none;cursor:pointer;
}
.btn-text .arrow{transition:transform .22s var(--ease);}
.btn-text:hover{text-decoration:underline;text-underline-offset:4px;}
.btn-text:hover .arrow{transform:translateX(3px);}

/* ===== 通用板块 ===== */
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:44px;}
.section-head h2{
  font-size:32px;line-height:1.3;display:flex;align-items:center;gap:14px;
}
.section-head h2::before{
  content:"";display:block;width:28px;height:2px;background:var(--brand);flex:0 0 auto;
}
.section-head p{margin-top:14px;color:var(--text-2);max-width:760px;}
.section-dark{background:var(--brand);color:#F7F6F2;}
.section-dark h2,.section-dark h3{color:#F7F6F2;}
.section-dark .section-head h2::before{background:var(--gold);}
.section-dark p{color:rgba(247,246,242,.78);}
.surface{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}

/* ===== 顶部区块 ===== */
.page-hero{padding:72px 0 56px;background:var(--bg);position:relative;overflow:hidden;}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(14,59,54,.05) 1px,transparent 1px);
  background-size:22px 22px;opacity:.7;pointer-events:none;
}
.page-hero .container{position:relative;}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.06em;
  color:var(--brand);background:var(--brand-soft);border-radius:999px;padding:6px 14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold);}
.page-hero h1{font-size:44px;line-height:1.25;margin:20px 0 18px;}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.page-hero .lead{font-size:17px;color:var(--text-2);max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;align-items:center;margin-top:32px;}
.hero-media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  aspect-ratio:16/9;border:1px solid var(--line);box-shadow:var(--shadow);
  background:rgba(14,59,54,.06);
}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media .tag{
  position:absolute;left:16px;bottom:16px;background:rgba(247,246,242,.94);
  border:1px solid var(--gold);color:var(--brand);font-size:12px;font-weight:600;
  border-radius:999px;padding:6px 14px;letter-spacing:.02em;
}
.divider-line{height:1px;background:var(--line);margin:56px 0 0;}

/* ===== 指标条 ===== */
.metrics{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:32px 0;
}
.metric .num{font-size:30px;font-weight:700;color:var(--gold);line-height:1.2;letter-spacing:-.01em;}
.metric .label{font-size:13px;color:var(--text-3);letter-spacing:.02em;margin-top:4px;}

/* ===== 时间轴 ===== */
.timeline{position:relative;padding-left:36px;}
.timeline::before{
  content:"";position:absolute;left:7px;top:10px;bottom:10px;width:1px;background:var(--line-strong);
}
.tl-item{position:relative;padding:0 0 40px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-36px;top:8px;width:15px;height:15px;border-radius:50%;
  background:var(--bg);border:1px solid var(--brand);
}
.tl-item::after{
  content:"";position:absolute;left:-32px;top:12px;width:7px;height:7px;border-radius:50%;background:var(--gold);
}
.tl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.tl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hi);border-color:var(--line-strong);}
.tl-step{font-size:13px;letter-spacing:.06em;color:var(--gold);font-weight:700;}
.tl-card h3{font-size:22px;margin:8px 0 10px;}
.tl-card p{color:var(--text-2);font-size:15px;margin-bottom:14px;}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;}
.badge{
  display:inline-flex;align-items:center;border-radius:999px;padding:4px 12px;
  font-size:10px;letter-spacing:.02em;background:var(--brand-soft);color:var(--brand);font-weight:600;
}
.badge-gold{background:rgba(201,162,39,.14);color:#8a6f14;}

/* ===== 更新类型卡片 ===== */
.type-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px;}
.type-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  display:flex;flex-direction:column;gap:12px;
}
.type-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hi);border-color:var(--line-strong);}
.type-card .idx{font-size:13px;letter-spacing:.08em;color:var(--text-3);font-weight:700;}
.type-card h3{font-size:20px;}
.type-card p{font-size:15px;color:var(--text-2);margin:0;}
.type-col-5{grid-column:span 5;}
.type-col-4{grid-column:span 4;}
.type-col-3{grid-column:span 3;}
.type-card.is-heavy{background:var(--surface);border-top:2px solid var(--brand);}
.type-card.is-dark{background:var(--brand);border-color:var(--brand);color:#F7F6F2;}
.type-card.is-dark h3{color:#F7F6F2;}
.type-card.is-dark p{color:rgba(247,246,242,.76);}
.type-card.is-dark .idx{color:rgba(247,246,242,.6);}

/* ===== 检查清单 + 信息卡 ===== */
.check-wrap{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:48px;align-items:start;}
.check-list{display:flex;flex-direction:column;gap:18px;margin-top:28px;}
.check-item{display:flex;gap:16px;align-items:flex-start;}
.check-mark{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;border:1px solid var(--brand);
  color:var(--brand);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:3px;
}
.check-item h3{font-size:17px;margin-bottom:4px;}
.check-item p{font-size:15px;color:var(--text-2);margin:0;}
.info-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow);
}
.info-card h3{font-size:20px;margin-bottom:16px;}
.info-list{display:flex;flex-direction:column;gap:0;margin-bottom:22px;}
.info-list li{
  display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed var(--line);
  font-size:15px;color:var(--text-2);
}
.info-list li:last-child{border-bottom:0;}
.info-list li strong{color:var(--text);font-weight:600;}
.info-note{font-size:13px;color:var(--text-3);margin:0 0 20px;}

/* ===== 提醒方式（深色区）===== */
.notice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:40px;}
.notice-item{
  border:1px solid rgba(247,246,242,.16);border-radius:var(--radius-card);padding:24px;
  background:rgba(247,246,242,.04);
  transition:transform .22s var(--ease),background .22s var(--ease);
}
.notice-item:hover{transform:translateY(-3px);background:rgba(247,246,242,.08);}
.notice-item h3{font-size:18px;margin-bottom:10px;}
.notice-item p{font-size:15px;margin:0;}
.notice-item .k{font-size:12px;letter-spacing:.08em;color:var(--gold);font-weight:700;display:block;margin-bottom:12px;}

/* ===== 图像块 ===== */
.media-band{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:21/9;background:rgba(14,59,54,.06);
}
.media-band img{width:100%;height:100%;object-fit:cover;}

/* ===== FAQ ===== */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:18px;font-weight:600;color:var(--text);
}
.faq-q:hover{color:var(--brand);}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 auto;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.faq-icon::before{left:0;top:7.5px;width:16px;height:1px;}
.faq-icon::after{left:7.5px;top:0;width:1px;height:16px;}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-a p{padding:0 0 24px;color:var(--text-2);font-size:15px;max-width:900px;}

/* ===== CTA 带 ===== */
.cta-band{background:var(--brand);color:#F7F6F2;padding:56px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:28px;color:#F7F6F2;}
.cta-inner p{color:rgba(247,246,242,.78);margin:10px 0 0;max-width:640px;}
.cta-band .btn-primary{background:#F7F6F2;color:var(--brand);}
.cta-band .btn-primary:hover{background:#ffffff;color:var(--brand-deep);}

/* ===== 表单 ===== */
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.form-field{display:flex;flex-direction:column;gap:8px;}
.form-field.full{grid-column:1/-1;}
.form-field label{font-size:14px;color:var(--text-2);font-weight:600;}
.form-field input,.form-field textarea{
  width:100%;min-height:44px;border-radius:var(--radius-btn);border:1px solid var(--line-strong);
  background:var(--surface);padding:10px 14px;font-size:15px;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.form-field textarea{min-height:120px;resize:vertical;}
.form-field input:focus,.form-field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(201,162,39,.45);
}
.form-hint{font-size:13px;color:var(--text-3);}

/* ===== 页脚 ===== */
.site-footer{background:var(--brand);color:rgba(247,246,242,.86);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:0;}
.footer-col{padding:0 28px;border-left:1px solid rgba(247,246,242,.12);}
.footer-col:first-child{padding-left:0;border-left:0;}
.footer-brand{font-size:18px;font-weight:600;color:#F7F6F2;margin-bottom:14px;}
.footer-col p{font-size:14px;color:rgba(247,246,242,.7);margin:0;max-width:320px;}
.footer-title{font-size:13px;letter-spacing:.08em;color:var(--gold);font-weight:700;margin-bottom:16px;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a,.footer-links span{font-size:14px;color:rgba(247,246,242,.8);}
.footer-links a:hover{color:var(--gold);text-decoration:none;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(247,246,242,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(247,246,242,.6);letter-spacing:.02em;
}

/* ===== 响应式 ===== */
@media (max-width:1199px){
  .container{max-width:960px;}
  .page-hero h1{font-size:38px;}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .page-hero h1{font-size:34px;}
  .hero-media{order:-1;}
  .main-nav{
    position:fixed;inset:72px 0 0 0;background:var(--bg);flex-direction:column;align-items:flex-start;
    gap:0;padding:24px;transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .22s var(--ease),transform .22s var(--ease);overflow-y:auto;
    border-top:1px solid var(--line);
  }
  .main-nav.open{opacity:1;transform:translateY(0);pointer-events:auto;}
  .main-nav .nav-link{width:100%;padding:18px 0;border-bottom:1px solid var(--line);font-size:16px;}
  .main-nav .nav-link::after{display:none;}
  .nav-toggle{display:flex;}
  .metrics{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .type-grid{grid-template-columns:repeat(6,minmax(0,1fr));}
  .type-col-5,.type-col-4,.type-col-3{grid-column:span 6;}
  .check-wrap{grid-template-columns:1fr;gap:32px;}
  .notice-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-col{padding:0;border-left:0;}
  .cta-inner h2{font-size:24px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .page-hero{padding:48px 0 40px;}
  .page-hero h1{font-size:28px;}
  .page-hero .lead{font-size:16px;}
  .section-head h2{font-size:22px;}
  .section-head h2::before{width:20px;}
  .tl-card h3{font-size:18px;}
  .type-card h3{font-size:18px;}
  .form-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
  .btn-sm{width:auto;}
  .hero-actions{flex-direction:column;align-items:stretch;gap:12px;}
  .hero-actions .btn-text{justify-content:center;}
  .faq-q{font-size:16px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:575px){
  body{font-size:15px;}
  .page-hero h1{font-size:26px;}
  .type-card,.tl-card,.info-card,.notice-item{padding:18px;}
  .metric .num{font-size:24px;}
  .cta-band{padding:44px 0;}
  .cta-inner h2{font-size:21px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
}

/* roulang page: category4 */
:root{
  --brand:#0E3B36;
  --brand-dark:#0A2C28;
  --brand-soft:rgba(14,59,54,.08);
  --accent:#C9A227;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --text:#1A1D1C;
  --text-2:#5C6360;
  --text-3:#8A908D;
  --line:rgba(14,59,54,.10);
  --line-strong:rgba(14,59,54,.20);
  --success:#2F7D5B;
  --warning:#B4761F;
  --error:#A33A2E;
  --radius-card:10px;
  --radius-btn:6px;
  --shadow-1:0 1px 2px rgba(14,59,54,.06),0 8px 24px rgba(14,59,54,.06);
  --shadow-2:0 6px 12px rgba(14,59,54,.10),0 16px 40px rgba(14,59,54,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--brand);}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em;color:var(--text);}
h1{font-size:44px;line-height:1.25;}
h2{font-size:32px;line-height:1.3;}
h3{font-size:22px;line-height:1.4;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;}

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

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(247,246,242,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px;}
.brand{
  display:flex;align-items:center;gap:10px;
  font-size:18px;font-weight:600;color:var(--brand);letter-spacing:-.01em;white-space:nowrap;
}
.brand-dot{width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(201,162,39,.15);}
.main-nav{display:flex;flex:1;justify-content:center;align-items:center;gap:4px;}
.main-nav .nav-link{
  position:relative;padding:10px 14px;font-size:15px;color:var(--text-2);border-radius:6px;
  transition:color .22s var(--ease);
}
.main-nav .nav-link:hover{color:var(--brand);}
.main-nav .nav-link.active{color:var(--brand);font-weight:600;}
.main-nav .nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--brand);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:6px;
  width:44px;height:44px;padding:0 10px;background:transparent;
  border:1px solid var(--line-strong);border-radius:var(--radius-btn);cursor:pointer;
}
.nav-toggle span{display:block;height:1.5px;background:var(--brand);transition:transform .22s var(--ease),opacity .22s var(--ease);}
.nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  border-radius:var(--radius-btn);padding:14px 28px;font-size:15px;font-weight:500;line-height:1.2;
  border:1px solid transparent;box-shadow:none;
  transition:background-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease);
}
.btn:focus,.btn:focus-visible{box-shadow:0 0 0 2px var(--accent);}
.btn-primary{
  --bs-btn-bg:var(--brand);
  --bs-btn-border-color:var(--brand);
  --bs-btn-color:#F7F6F2;
  --bs-btn-hover-bg:var(--brand-dark);
  --bs-btn-hover-border-color:var(--brand-dark);
  --bs-btn-hover-color:#F7F6F2;
  --bs-btn-active-bg:var(--brand-dark);
  --bs-btn-active-border-color:var(--brand-dark);
  --bs-btn-active-color:#F7F6F2;
  --bs-btn-disabled-bg:var(--brand);
  --bs-btn-disabled-border-color:var(--brand);
}
.btn-primary:hover{transform:translateY(-1px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-outline-brand{
  background:transparent;border:1px solid var(--brand);color:var(--brand);
}
.btn-outline-brand:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px);}
.btn-light-brand{background:#F7F6F2;color:var(--brand);border:1px solid rgba(247,246,242,.6);}
.btn-light-brand:hover{background:#fff;color:var(--brand-dark);transform:translateY(-1px);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;color:var(--brand);font-weight:500;
}
.link-arrow span.arrow{display:inline-block;transition:transform .22s var(--ease);}
.link-arrow:hover{text-decoration:underline;text-underline-offset:4px;}
.link-arrow:hover span.arrow{transform:translateX(3px);}

/* ---------- 徽章 / 标签 ---------- */
.badge-soft{
  display:inline-block;padding:3px 10px;font-size:10px;letter-spacing:.06em;font-weight:600;
  color:var(--brand);background:var(--brand-soft);border-radius:999px;
}
.tag-line{display:flex;flex-wrap:wrap;gap:8px;}

/* ---------- 板块 ---------- */
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-head{margin-bottom:40px;}
.section-head h2{position:relative;padding-left:18px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.28em;width:2px;height:28px;background:var(--brand);border-radius:2px;
}
.section-head p{color:var(--text-2);margin-top:12px;max-width:720px;}
.eyebrow{font-size:13px;letter-spacing:.08em;color:var(--accent);font-weight:600;margin-bottom:10px;}
.hr-line{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- 内页头部 ---------- */
.page-hero{position:relative;padding:56px 0 64px;overflow:hidden;}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(900px 320px at 12% 0%,rgba(14,59,54,.06),transparent 70%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.crumb{font-size:13px;color:var(--text-3);margin-bottom:20px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand);}
.crumb .sep{color:var(--line-strong);}
.page-hero h1{margin-bottom:18px;}
.page-hero h1 em{font-style:normal;color:var(--brand);}
.lead{font-size:17px;color:var(--text-2);max-width:640px;}
.hero-tags{margin-top:24px;}
.hero-figure{
  aspect-ratio:16/9;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-1);background:var(--brand-soft);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}

/* ---------- 帮助方向 + 榜单 ---------- */
.help-grid{display:grid;grid-template-columns:8fr 4fr;gap:32px;align-items:start;}
.help-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.help-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.help-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.help-card .idx{
  font-size:13px;letter-spacing:.08em;color:var(--accent);font-weight:600;display:block;margin-bottom:12px;
}
.help-card h3{font-size:18px;margin-bottom:10px;}
.help-card p{font-size:15px;color:var(--text-2);margin-bottom:16px;}
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-1);
}
.panel-title{font-size:16px;font-weight:600;margin-bottom:16px;display:flex;align-items:center;gap:8px;}
.panel-title::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
.rank-list{list-style:none;}
.rank-list li{border-bottom:1px solid var(--line);}
.rank-list li:last-child{border-bottom:0;}
.rank-list a{display:flex;gap:14px;padding:14px 0;font-size:15px;color:var(--text-2);}
.rank-list a:hover{color:var(--brand);}
.rank-list .num{font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.04em;flex:0 0 22px;line-height:1.9;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;}
.faq-list{border-top:1px solid var(--line);margin-top:8px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  padding:22px 4px;font-size:18px;font-weight:600;color:var(--text);
  transition:color .22s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary::after{
  content:"+";font-size:22px;font-weight:400;color:var(--brand);line-height:1.2;flex:0 0 auto;
  transition:transform .22s var(--ease);
}
.faq-item[open] summary::after{content:"−";}
.faq-body{padding:0 4px 26px;color:var(--text-2);font-size:15.5px;max-width:820px;}
.faq-body strong{color:var(--text);font-weight:600;}
.faq-body ol{margin:12px 0 0;padding-left:20px;}
.faq-body li{margin-bottom:8px;}

/* ---------- 咨询卡 ---------- */
.consult-grid{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:start;}
.consult-media{
  aspect-ratio:4/3;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
  margin-bottom:24px;background:var(--brand-soft);
}
.consult-media img{width:100%;height:100%;object-fit:cover;}
.check-list{list-style:none;}
.check-list li{
  position:relative;padding-left:22px;margin-bottom:12px;font-size:15px;color:var(--text-2);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:.68em;width:8px;height:1.5px;background:var(--accent);
}
.form-row{margin-bottom:18px;}
.form-label{display:block;font-size:14px;color:var(--text-2);margin-bottom:8px;}
.form-control{
  width:100%;height:44px;padding:0 14px;font-size:15px;color:var(--text);background:#fff;
  border:1px solid var(--line-strong);border-radius:var(--radius-btn);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
textarea.form-control{height:auto;min-height:120px;padding:12px 14px;line-height:1.7;resize:vertical;}
.form-control:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(201,162,39,.35);
}
.form-control::placeholder{color:var(--text-3);}
.form-status{display:none;margin-top:14px;font-size:14px;color:var(--success);}
.form-status.show{display:block;}

/* ---------- 数据条 ---------- */
.stat-band{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;box-shadow:var(--shadow-1);
}
.stat-item .num{font-size:30px;font-weight:600;color:var(--accent);line-height:1.3;}
.stat-item .lbl{font-size:14px;color:var(--text-2);}

/* ---------- CTA 带 ---------- */
.cta-band{background:var(--brand);color:#F7F6F2;padding:56px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;}
.cta-inner h2{color:#fff;font-size:26px;margin-bottom:10px;}
.cta-inner p{color:rgba(247,246,242,.78);font-size:15px;margin:0;max-width:620px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand);color:#F7F6F2;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:0;}
.footer-col{padding:0 24px;border-left:1px solid rgba(247,246,242,.12);}
.footer-col:first-child{border-left:0;padding-left:0;}
.footer-brand{font-size:18px;font-weight:600;margin-bottom:12px;}
.footer-col p{font-size:14px;color:rgba(247,246,242,.72);line-height:1.8;margin:0;}
.footer-title{font-size:15px;font-weight:600;margin-bottom:16px;color:#fff;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a,.footer-links span{font-size:14px;color:rgba(247,246,242,.72);}
.footer-links a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(247,246,242,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(247,246,242,.6);letter-spacing:.02em;
}

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

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .container{max-width:960px;}
  h1{font-size:38px;}
  .hero-grid{gap:36px;}
}
@media (max-width:991.98px){
  .container{max-width:100%;padding-left:20px;padding-right:20px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  h1{font-size:30px;}
  h2{font-size:24px;}
  h3{font-size:19px;}
  .main-nav{
    position:fixed;left:0;right:0;top:72px;bottom:0;
    display:flex;flex-direction:column;flex:1;justify-content:flex-start;align-items:stretch;
    gap:0;padding:12px 24px 32px;background:var(--bg);overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  }
  .main-nav.open{opacity:1;visibility:visible;transform:none;}
  .main-nav .nav-link{width:100%;padding:18px 0;font-size:17px;border-bottom:1px solid var(--line);}
  .main-nav .nav-link.active::after{display:none;}
  .nav-toggle{display:flex;}
  .hero-grid{grid-template-columns:1fr;gap:28px;}
  .page-hero{padding:36px 0 44px;}
  .help-grid{grid-template-columns:1fr;}
  .consult-grid{grid-template-columns:1fr;}
  .stat-band{grid-template-columns:repeat(2,1fr);padding:24px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;row-gap:32px;}
  .footer-col{padding:0 20px 0 0;border-left:0;}
  .footer-col:nth-child(odd){padding-right:20px;}
}
@media (max-width:575.98px){
  body{font-size:15px;}
  h1{font-size:26px;}
  h2{font-size:21px;}
  h3{font-size:18px;}
  .container{padding-left:18px;padding-right:18px;}
  .help-cards{grid-template-columns:1fr;}
  .help-card{padding:18px;}
  .panel{padding:18px;}
  .stat-band{grid-template-columns:1fr;padding:20px;}
  .stat-item .num{font-size:26px;}
  .footer-grid{grid-template-columns:1fr;}
  .brand{font-size:16px;}
  .faq-item summary{font-size:16px;padding:18px 2px;}
  .cta-inner h2{font-size:21px;}
  .cta-band{padding:44px 0;}
  .btn{width:100%;text-align:center;}
  .nav-actions .btn{width:auto;}
}