/* roulang page: index */
:root{
  --brand:#0F6DA8;
  --brand-d:#0B3C5D;
  --brand-l:#E8F1F8;
  --accent:#FF7A2F;
  --mint:#14B8A6;
  --text:#1A2733;
  --muted:#5B6B7A;
  --border:#E3EAF1;
  --bg:#F5F8FB;
  --card:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:6px;
  --sh-1:0 2px 8px rgba(15,60,95,.06);
  --sh-2:0 12px 32px rgba(15,60,95,.10);
  --wrap:1240px;
  --bs-primary:#0F6DA8;
  --bs-primary-rgb:15,109,168;
  --bs-body-font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-body-color:#1A2733;
  --bs-body-bg:#F5F8FB;
  --bs-border-color:#E3EAF1;
  --bs-border-radius:14px;
  --bs-link-color:#0F6DA8;
  --bs-link-hover-color:#0B3C5D;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s cubic-bezier(.2,.7,.3,1)}
a:hover{color:var(--brand-d)}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding-left:1.1em}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section.tight{padding:72px 0}
.section.soft{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);text-transform:uppercase;
  background:var(--brand-l);border-radius:var(--r-badge);
  padding:6px 12px;margin-bottom:16px;
}
.sec-head{max-width:760px;margin-bottom:48px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-title{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.35;color:var(--brand-d);letter-spacing:0}
.sec-sub{margin-top:14px;font-size:16px;color:var(--muted)}
.divider{height:1px;background:var(--border);border:0;margin:0}

/* ---------- 按钮 ---------- */
.btn{font-weight:600;font-size:15px;border-radius:var(--r-btn);padding:12px 22px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;transition:transform .18s cubic-bezier(.2,.7,.3,1),background-color .18s,box-shadow .18s,border-color .18s;box-shadow:none}
.btn:focus,.btn:focus-visible{box-shadow:0 0 0 3px rgba(15,109,168,.18);outline:none}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:#0c5c8d;color:#fff;transform:translateY(-2px)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#ea6a20;color:#fff;transform:translateY(-2px)}
.btn-outline-brand{background:#fff;color:var(--brand);border-color:rgba(15,109,168,.45)}
.btn-outline-brand:hover{background:var(--brand-l);color:var(--brand-d);border-color:var(--brand);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.btn[disabled]{opacity:.45;pointer-events:none}
.link-more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;color:var(--brand)}
.link-more i{transition:transform .18s}
.link-more:hover i{transform:translateX(4px)}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:1040;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .2s}
.site-header.scrolled{box-shadow:0 2px 14px rgba(15,60,95,.08)}
.nav-inner{height:72px;display:flex;align-items:center;gap:28px}
.logo{display:flex;flex-direction:column;line-height:1.1;text-decoration:none;flex:0 0 auto}
.logo-main{font-size:20px;font-weight:700;color:var(--brand-d);letter-spacing:.02em}
.logo-sub{font-size:12px;color:var(--muted);letter-spacing:.14em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto}
.nav-item{position:relative}
.nav-item>a{display:inline-flex;align-items:center;gap:6px;padding:10px 14px;font-size:15px;font-weight:600;color:var(--text);border-radius:8px;min-height:44px}
.nav-item>a:hover,.nav-item>a:focus-visible{background:var(--brand-l);color:var(--brand-d)}
.nav-item.active>a{color:var(--brand);background:var(--brand-l)}
.nav-item .caret{font-size:11px;color:var(--muted)}
.mega-panel{
  position:absolute;top:calc(100% + 10px);left:-12px;width:760px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-2);padding:24px;display:grid;grid-template-columns:1.1fr 1fr 1.2fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .18s,transform .18s,visibility .18s;
}
.nav-item.has-mega:hover .mega-panel,
.nav-item.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--muted);margin-bottom:12px}
.mega-link{display:block;padding:8px 10px;border-radius:8px;font-size:14px;color:var(--text);font-weight:500}
.mega-link:hover{background:var(--brand-l);color:var(--brand-d)}
.mega-card{display:flex;gap:14px;align-items:center;padding:12px;border:1px solid var(--border);border-radius:12px;background:var(--bg)}
.mega-card img{width:72px;height:54px;object-fit:cover;border-radius:8px;flex:0 0 auto}
.mega-card p{font-size:13px;color:var(--muted);line-height:1.6}
.mega-card strong{display:block;font-size:14px;color:var(--brand-d);margin-bottom:2px}
.nav-cta{flex:0 0 auto;display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;border:1px solid var(--border);background:#fff;border-radius:10px;width:44px;height:44px;color:var(--brand-d);font-size:18px}
.mobile-nav{border-top:1px solid var(--border);background:#fff}
.mobile-nav .m-link{display:block;padding:14px 24px;font-weight:600;color:var(--text);border-bottom:1px solid var(--border)}
.mobile-nav .m-link:active{background:var(--brand-l)}
.mobile-nav .m-cta{padding:16px 24px}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:linear-gradient(180deg,rgba(245,248,251,.94),rgba(245,248,251,.97)),url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--border);
  overflow:hidden;
}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:88px 0 64px}
.hero-title{font-size:clamp(28px,4vw,44px);font-weight:700;line-height:1.28;color:var(--brand-d);letter-spacing:0}
.hero-title span{color:var(--brand)}
.hero-sub{margin-top:20px;font-size:17px;color:var(--muted);max-width:560px}
.hero-actions{margin-top:32px;display:flex;flex-wrap:wrap;gap:14px}
.hero-figure{position:relative;border-radius:18px;overflow:hidden;box-shadow:var(--sh-2);border:1px solid var(--border);background:#fff}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-badge{
  position:absolute;left:18px;bottom:18px;background:rgba(255,255,255,.95);
  border:1px solid var(--border);border-radius:12px;padding:10px 16px;box-shadow:var(--sh-1);
}
.hero-badge strong{display:block;font-size:20px;color:var(--brand);line-height:1.2}
.hero-badge em{font-style:normal;font-size:12.5px;color:var(--muted)}
.trust-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border);border-top:1px solid var(--border)}
.trust-item{background:#fff;padding:22px 24px}
.trust-item strong{display:block;font-size:22px;color:var(--brand-d);font-weight:700}
.trust-item span{font-size:13.5px;color:var(--muted)}

/* ---------- 指标看板 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);padding:28px 24px;box-shadow:var(--sh-1);transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,border-color .18s}
.metric-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(15,109,168,.4)}
.metric-num{font-size:clamp(30px,3.4vw,44px);font-weight:700;color:var(--brand-d);line-height:1.1;font-variant-numeric:tabular-nums}
.metric-num em{font-style:normal;font-size:18px;color:var(--brand);margin-left:4px}
.metric-label{margin-top:10px;font-size:14px;color:var(--muted)}
.metric-rule{margin-top:18px;height:4px;border-radius:999px;background:linear-gradient(90deg,var(--mint) 0%,var(--mint) 38%,var(--border) 38%,var(--border) 100%)}
.metric-card:nth-child(2) .metric-rule{background:linear-gradient(90deg,var(--brand) 0%,var(--brand) 62%,var(--border) 62%,var(--border) 100%)}
.metric-card:nth-child(3) .metric-rule{background:linear-gradient(90deg,var(--accent) 0%,var(--accent) 46%,var(--border) 46%,var(--border) 100%)}
.metric-card:nth-child(4) .metric-rule{background:linear-gradient(90deg,var(--brand-d) 0%,var(--brand-d) 72%,var(--border) 72%,var(--border) 100%)}

/* ---------- 功能矩阵 ---------- */
.matrix-top{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:24px}
.matrix-bottom{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.m-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,border-color .18s;display:flex;flex-direction:column}
.m-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(15,109,168,.4)}
.m-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EEF3F7}
.m-card .m-body{padding:24px 26px 26px;flex:1 1 auto;display:flex;flex-direction:column}
.m-card h3{font-size:19px;font-weight:700;color:var(--brand-d)}
.m-card p{margin-top:10px;font-size:15px;color:var(--muted);flex:1 1 auto}
.m-card .link-more{margin-top:18px}
.icon-box{width:46px;height:46px;border-radius:12px;background:var(--brand-l);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:16px}
.m-card.small{padding:26px}
.m-card.small h3{font-size:18px}
.tag{display:inline-block;font-size:12.5px;font-weight:600;border-radius:var(--r-badge);padding:4px 10px;background:var(--brand-l);color:var(--brand)}
.tag.mint{background:rgba(20,184,166,.12);color:#0d8378}
.tag.accent{background:rgba(255,122,47,.13);color:#c9571a}

/* ---------- 对比 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{border-radius:var(--r-card);padding:30px 28px;background:#fff;border:1px solid var(--border)}
.compare-col.before{background:#F2F5F8;border-color:#E3EAF1}
.compare-col.after{border:2px solid rgba(15,109,168,.55);box-shadow:var(--sh-1)}
.compare-col h3{font-size:18px;font-weight:700;color:var(--brand-d);display:flex;align-items:center;gap:10px}
.compare-col.before h3{color:var(--muted)}
.compare-list{margin-top:20px;display:grid;gap:14px}
.compare-item{display:flex;gap:12px;font-size:15px;color:var(--text);align-items:flex-start}
.compare-item i{font-size:14px;margin-top:5px;color:#9AA9B6}
.compare-col.after .compare-item i{color:var(--mint)}
.compare-foot{margin-top:26px;font-size:13.5px;color:var(--muted)}
.bar-row{display:grid;gap:10px;margin-top:18px}
.bar{height:10px;border-radius:999px;background:#E7EDF3;overflow:hidden}
.bar span{display:block;height:100%;border-radius:999px;background:var(--mint)}
.bar.alt span{background:var(--brand)}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:26px 24px;position:relative;box-shadow:var(--sh-1)}
.step-no{width:36px;height:36px;border-radius:10px;background:var(--brand);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:15px;margin-bottom:16px}
.step h3{font-size:17px;font-weight:700;color:var(--brand-d)}
.step p{margin-top:8px;font-size:14.5px;color:var(--muted)}
.step:after{content:"";position:absolute;right:-14px;top:44px;width:14px;height:2px;background:var(--border)}
.step:last-child:after{display:none}

/* ---------- 最新信息 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s,border-color .18s}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:rgba(15,109,168,.4)}
.post-cover{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EEF3F7}
.post-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.post-badge{align-self:flex-start;font-size:12.5px;font-weight:600;color:var(--brand);background:var(--brand-l);border-radius:var(--r-badge);padding:4px 10px;margin-bottom:12px}
.post-title{font-size:17px;font-weight:700;color:var(--brand-d);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-title:hover{color:var(--brand)}
.post-excerpt{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1 1 auto}
.post-meta{margin-top:18px;padding-top:14px;border-top:1px solid var(--border);font-size:13px;color:var(--muted);display:flex;justify-content:space-between;gap:12px;align-items:center}
.post-meta .go{color:var(--brand);font-weight:600}
.empty-state{grid-column:1/-1;background:#fff;border:1px dashed var(--border);border-radius:var(--r-card);padding:56px 24px;text-align:center}
.empty-state i{font-size:28px;color:var(--brand);margin-bottom:14px;display:block}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:18px}
.list-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.list-head .sec-head{margin-bottom:0}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.accordion-item{border:1px solid var(--border);border-radius:12px !important;margin-bottom:14px;overflow:hidden;background:#fff;box-shadow:var(--sh-1)}
.accordion-button{font-size:16px;font-weight:600;color:var(--brand-d);background:#fff;padding:20px 22px;border-radius:12px !important;box-shadow:none}
.accordion-button:not(.collapsed){color:var(--brand);background:#fff;box-shadow:inset 3px 0 0 var(--brand)}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(15,109,168,.15)}
.accordion-button::after{width:1rem;height:1rem;background-size:1rem;transition:transform .2s}
.accordion-button:not(.collapsed)::after{transform:rotate(90deg)}
.accordion-body{padding:0 22px 22px;font-size:15px;color:var(--muted);line-height:1.8}

/* ---------- 表单 / CTA ---------- */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start}
.info-list{display:grid;gap:16px;margin-top:26px}
.info-item{display:flex;gap:14px;align-items:flex-start}
.info-item .icon-box{margin-bottom:0;width:42px;height:42px;font-size:17px}
.info-item strong{display:block;font-size:15px;color:var(--brand-d)}
.info-item span{font-size:14px;color:var(--muted)}
.form-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-1)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px}
.field .form-control,.field .form-select{border:1px solid var(--border);border-radius:var(--r-input);padding:12px 14px;font-size:15px;color:var(--text);background:#fff;min-height:46px}
.field .form-control:focus,.field .form-select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,109,168,.15)}
.field .error-text{display:none;font-size:13px;color:#D6455B;margin-top:6px}
.field.invalid .form-control,.field.invalid .form-select{border-color:#D6455B}
.field.invalid .error-text{display:block}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand)}
.form-check-label{font-size:13.5px;color:var(--muted)}
.form-note{margin-top:16px;font-size:13px;color:var(--muted)}
.form-alert{display:none;margin-top:18px;border-radius:12px;padding:14px 16px;background:rgba(20,184,166,.1);color:#0d8378;font-size:14.5px;border:1px solid rgba(20,184,166,.28)}
.form-alert.show{display:block}
.cta-band{position:relative;background:linear-gradient(120deg,rgba(11,60,93,.94),rgba(15,109,168,.9)),url('/assets/images/backpic/back-3.webp') center/cover no-repeat;color:#fff;border-radius:18px;padding:56px 48px;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;color:#fff}
.cta-band p{margin-top:12px;color:rgba(255,255,255,.82);font-size:15.5px;max-width:620px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-d);color:#C9D6E0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:72px 0 48px}
.footer-brand .logo-main{color:#fff}
.footer-brand .logo-sub{color:rgba(255,255,255,.6)}
.footer-brand p{margin-top:16px;font-size:14px;color:#C9D6E0;line-height:1.8;max-width:320px}
.footer-title{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-link{display:block;font-size:14px;color:#C9D6E0;padding:6px 0}
.footer-link:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-contact span{display:block;font-size:14px;padding:6px 0;color:#C9D6E0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:22px 0;font-size:13.5px;color:rgba(255,255,255,.7);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

@media (max-width:1199px){
  .metric-grid{grid-template-columns:repeat(4,1fr)}
  .post-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:991px){
  .nav-links,.nav-cta .btn{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-inner{gap:16px;justify-content:space-between}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:56px 0 48px}
  .trust-bar{grid-template-columns:repeat(2,1fr)}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .matrix-top{grid-template-columns:1fr}
  .matrix-bottom{grid-template-columns:repeat(2,1fr)}
  .compare-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step:after{display:none}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .faq-grid,.contact-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 36px}
  .section{padding:72px 0}
  .section.tight{padding:56px 0}
}
@media (max-width:575px){
  .wrap{padding:0 16px}
  .section{padding:56px 0}
  .section.tight{padding:48px 0}
  .sec-head{margin-bottom:32px}
  .hero-title{font-size:26px}
  .hero-sub{font-size:15.5px}
  .hero-actions .btn{width:100%}
  .trust-bar{grid-template-columns:1fr}
  .metric-grid{grid-template-columns:1fr}
  .matrix-bottom{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .post-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding:44px 0 28px}
  .cta-band{padding:36px 24px;border-radius:14px}
  .form-card{padding:22px}
  .list-head{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --brand:#0F6DA8;
  --brand-rgb:15,109,168;
  --brand-deep:#0B3C5D;
  --accent:#FF7A2F;
  --mint:#14B8A6;
  --ink:#1A2733;
  --muted:#5B6B7A;
  --line:#E3EAF1;
  --page:#F5F8FB;
  --card:#FFFFFF;
  --danger:#D6455B;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --radius-badge:6px;
  --shadow-1:0 2px 8px rgba(15,60,95,.06);
  --shadow-2:0 12px 32px rgba(15,60,95,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#0F6DA8;
  --bs-primary-rgb:15,109,168;
  --bs-body-font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-body-color:#1A2733;
  --bs-body-bg:#F5F8FB;
  --bs-border-radius:10px;
  --bs-link-color:#0F6DA8;
  --bs-link-hover-color:#0C5788;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease),background-color .18s var(--ease)}
a:hover{color:#0C5788}
h1,h2,h3,h4{font-weight:700;letter-spacing:0;color:var(--brand-deep);margin:0}
p{margin:0}
ul,ol{padding-left:1.2rem}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.wrap{max-width:1240px;margin:0 auto;padding:0 24px}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1.2;
  padding:11px 20px;border-radius:var(--radius-btn);
  border:1px solid transparent;
  transition:background-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
  min-height:44px;
}
.btn:active{transform:translateY(1px)}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:#0C5788;color:#fff;transform:translateY(-1px);box-shadow:0 6px 16px rgba(15,60,95,.18)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#EC6A20;color:#fff;transform:translateY(-1px);box-shadow:0 6px 18px rgba(255,122,47,.28)}
.btn-outline-brand{background:#fff;border-color:var(--brand);color:var(--brand)}
.btn-outline-brand:hover{background:#EEF5FB;color:var(--brand);transform:translateY(-1px)}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand);font-weight:600;font-size:14px;
  border:0;background:none;padding:6px 0;min-height:auto;
}
.btn-link-arrow i{transition:transform .18s var(--ease)}
.btn-link-arrow:hover i{transform:translateX(4px)}
.btn[disabled],.btn.disabled{opacity:.45;pointer-events:none}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s var(--ease);
}
.site-header.scrolled{box-shadow:0 6px 22px rgba(15,60,95,.09)}
.nav-inner{display:flex;align-items:center;gap:24px;height:72px}
.logo{display:inline-flex;align-items:baseline;gap:6px;white-space:nowrap}
.logo-main{font-size:22px;font-weight:800;color:var(--brand-deep);letter-spacing:.5px}
.logo-sub{font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.5px}
.nav-links{display:flex;align-items:center;gap:2px;flex:1;min-width:0}
.nav-item{position:relative}
.nav-item>a{
  display:inline-flex;align-items:center;gap:6px;height:44px;padding:0 14px;
  border-radius:10px;color:var(--ink);font-size:15px;font-weight:500;white-space:nowrap;
}
.nav-item>a:hover{background:#EEF5FB;color:var(--brand)}
.nav-item.active>a{background:#EEF5FB;color:var(--brand);font-weight:700}
.caret{font-size:10px;color:var(--muted);transition:transform .2s var(--ease)}
.nav-item:hover .caret,.nav-item:focus-within .caret{transform:rotate(180deg)}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:#fff;color:var(--brand-deep);font-size:17px;
}
.nav-toggle:hover{background:#EEF5FB;border-color:rgba(15,109,168,.4)}
.nav-mobile{display:none}
.mega-panel{
  position:absolute;top:calc(100% + 6px);left:-140px;width:800px;
  background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-2);padding:24px;
  display:grid;grid-template-columns:1fr 1fr 1.35fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
  z-index:60;
}
.nav-item:hover .mega-panel,.nav-item:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{font-size:13px;font-weight:700;color:var(--brand-deep);letter-spacing:.5px;margin-bottom:10px}
.mega-link{display:block;padding:8px 10px;border-radius:8px;font-size:14px;color:var(--muted)}
.mega-link:hover{background:#F1F7FC;color:var(--brand)}
.mega-card{display:flex;gap:12px;align-items:center;background:#F5F8FB;border:1px solid var(--line);border-radius:12px;padding:12px}
.mega-card img{width:76px;height:56px;object-fit:cover;border-radius:8px;flex:none}
.mega-card strong{display:block;font-size:14px;color:var(--brand-deep);margin-bottom:4px}
.mega-card p{font-size:12.5px;line-height:1.6;color:var(--muted)}

/* ============ 内页横幅 ============ */
.page-hero{
  position:relative;padding:44px 0 40px;color:#fff;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
}
.page-hero::before{content:"";position:absolute;inset:0;background:rgba(11,60,93,.76)}
.page-hero .wrap{position:relative;z-index:2}
.crumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13.5px;color:#BCD2E2;margin-bottom:14px}
.crumb a{color:#DCE8F1}
.crumb a:hover{color:#fff;text-decoration:underline}
.crumb i{font-size:9px;opacity:.75}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);
  color:#fff;font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;
}
.hero-line{margin-top:14px;font-size:14.5px;color:#C9DCEA;max-width:720px}

/* ============ 阅读区布局 ============ */
.read-section{padding:56px 0 80px}
.read-grid{
  display:grid;grid-template-columns:minmax(0,760px) 300px;
  gap:40px;justify-content:center;align-items:start;
}
.article-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:40px 44px;
}
.article-title{
  font-size:clamp(24px,3vw,34px);line-height:1.4;color:var(--brand-deep);
  margin-bottom:18px;
}
.meta-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13.5px;color:var(--muted)}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  background:#EEF5FB;color:var(--brand);border:1px solid rgba(15,109,168,.22);
  font-size:12.5px;font-weight:700;padding:4px 10px;border-radius:var(--radius-badge);
}
.meta-dot{color:#C3D2DE}
.divider{height:1px;background:var(--line);border:0;margin:26px 0}
.article-body{font-size:16px;line-height:1.85;color:var(--ink)}
.article-body p{margin:0 0 18px}
.article-body h2{
  position:relative;font-size:24px;line-height:1.45;color:var(--brand-deep);
  margin:38px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:2px;background:var(--brand);
}
.article-body h3{font-size:19px;color:var(--brand-deep);margin:28px 0 12px}
.article-body h4{font-size:17px;color:var(--brand-deep);margin:22px 0 10px}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;border-left:4px solid var(--brand);
  background:#F1F7FC;border-radius:0 12px 12px 0;color:var(--muted);font-size:15.5px;
}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px}
.article-body li{margin-bottom:10px;line-height:1.85}
.article-body img{width:100%;height:auto;border-radius:12px;margin:20px 0}
.article-body figure{margin:22px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px}
.article-body th{background:#F1F7FC;font-weight:700;text-align:left;color:var(--brand-deep)}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:11px 12px}
.article-body pre{
  background:var(--brand-deep);color:#E6EFF6;padding:16px 18px;border-radius:12px;
  overflow-x:auto;font-size:14px;line-height:1.7;margin:20px 0;
}
.article-body code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:14px}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.back-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between}
.back-links{display:flex;flex-wrap:wrap;gap:20px}
.back-links a{font-size:14.5px;font-weight:600;display:inline-flex;align-items:center;gap:7px}
.empty-state{
  background:#F5F8FB;border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:52px 24px;text-align:center;
}
.empty-state i{font-size:34px;color:#A9BECD;display:block;margin-bottom:14px}
.empty-state p{font-size:16px;color:var(--muted);margin-bottom:18px}

/* ============ 侧栏 ============ */
.read-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:22px;
}
.side-title{
  font-size:14px;font-weight:700;color:var(--brand-deep);
  padding-bottom:12px;margin-bottom:12px;border-bottom:1px solid var(--line);
}
.side-link{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 10px;border-radius:8px;font-size:14px;color:var(--muted);
}
.side-link:hover{background:#F1F7FC;color:var(--brand)}
.side-link i{font-size:11px;opacity:.6}
.side-cta img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px;margin-bottom:14px}
.side-cta p{font-size:13.5px;line-height:1.7;color:var(--muted);margin-bottom:16px}

/* ============ 相关推荐 ============ */
.related{margin-top:44px}
.section-head{margin-bottom:22px}
.section-eyebrow{font-size:13px;font-weight:700;color:var(--brand);letter-spacing:1px;margin-bottom:8px}
.section-title{font-size:clamp(20px,2.4vw,26px)}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.mini-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-1);height:100%;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
  display:flex;flex-direction:column;
}
.mini-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(15,109,168,.4)}
.mini-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EDF2F7}
.mini-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.mini-body h3{font-size:16px;line-height:1.5;color:var(--brand-deep)}
.mini-body h3 a{color:inherit}
.mini-body h3 a:hover{color:var(--brand)}
.mini-meta{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);margin-top:auto}

/* ============ CTA ============ */
.cta-section{padding:0 0 88px}
.cta-box{
  position:relative;overflow:hidden;border-radius:20px;
  background:var(--brand-deep);color:#fff;padding:56px 48px;
}
.cta-box::after{
  content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:rgba(20,184,166,.16);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:center}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.6vw,28px);margin-bottom:12px}
.cta-inner p{color:#C9DCEA;font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-deep);color:#C9D6E0;padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:36px}
.footer-brand .logo{margin-bottom:14px}
.footer-brand .logo-main{color:#fff}
.footer-brand .logo-sub{color:#7FB6D8}
.footer-brand p{font-size:14px;line-height:1.8;color:#A9C0D1;max-width:330px}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-link{display:block;font-size:14px;color:#C9D6E0;padding:5px 0}
.footer-link:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}
.footer-contact span{display:block;font-size:14px;color:#A9C0D1;padding:5px 0}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.13);padding-top:20px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#93AEC1;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .read-grid{grid-template-columns:minmax(0,760px)}
  .read-side{position:static;flex-direction:row;flex-wrap:wrap}
  .read-side .side-card{flex:1 1 300px}
}
@media (max-width:1100px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-mobile{display:block;border-top:1px solid var(--line);padding:12px 0 18px}
  .nav-mobile a{display:block;padding:11px 12px;border-radius:10px;font-size:15px;color:var(--ink)}
  .nav-mobile a:hover{background:#EEF5FB;color:var(--brand)}
  .nav-mobile .btn{margin-top:10px}
  .nav-mobile .btn:hover{background:#EC6A20;color:#fff}
  .mega-panel{display:none}
}
@media (max-width:991px){
  .wrap{padding:0 20px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-inner{grid-template-columns:1fr;gap:24px}
  .cta-actions{justify-content:flex-start}
}
@media (max-width:767px){
  .wrap{padding:0 16px}
  .nav-inner{height:60px;gap:12px}
  .logo-main{font-size:19px}
  .logo-sub{font-size:12px}
  .page-hero{padding:32px 0 30px}
  .read-section{padding:36px 0 56px}
  .article-card{padding:26px 20px}
  .article-body h2{font-size:21px;margin-top:30px}
  .article-body h3{font-size:18px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .cta-box{padding:36px 24px;border-radius:16px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .related-grid{grid-template-columns:1fr}
  .article-title{font-size:22px}
  .read-side{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --brand:#0F6DA8;
  --brand-dark:#0B3C5D;
  --brand-deep:#0a3252;
  --accent:#FF7A2F;
  --mint:#14B8A6;
  --danger:#D6455B;
  --text:#1A2733;
  --muted:#5B6B7A;
  --border:#E3EAF1;
  --bg:#F5F8FB;
  --card:#FFFFFF;
  --soft:#F2F8FC;
  --radius:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow-1:0 2px 8px rgba(15,60,95,.06);
  --shadow-2:0 12px 32px rgba(15,60,95,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --wrap:1240px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--brand-deep)}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:0;color:var(--brand-dark)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

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

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:11px 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  text-decoration:none;cursor:pointer;
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-accent{background:var(--accent);color:#fff;border-color:var(--accent);box-shadow:0 6px 18px rgba(255,122,47,.24)}
.btn-accent:hover{background:#ef6a1c;border-color:#ef6a1c;color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,122,47,.28)}
.btn-brand{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn-brand:hover{background:#0c5c8e;border-color:#0c5c8e;color:#fff;transform:translateY(-2px)}
.btn-outline-brand{background:#fff;color:var(--brand);border-color:rgba(15,109,168,.42)}
.btn-outline-brand:hover{background:var(--soft);color:var(--brand-deep);border-color:var(--brand);transform:translateY(-2px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand);padding:0;min-height:0}
.btn-text:hover{gap:10px}
.btn-text i{font-size:12px;transition:transform .18s var(--ease)}
.btn-text:hover i{transform:translateX(2px)}
.w-100{width:100%}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;
  border-bottom:1px solid var(--border);
  transition:box-shadow .2s var(--ease);
}
.site-header.scrolled{box-shadow:var(--shadow-1)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{display:flex;flex-direction:column;line-height:1.06;text-decoration:none;flex-shrink:0}
.logo-main{font-size:20px;font-weight:700;color:var(--brand-dark);letter-spacing:.01em}
.logo-sub{font-size:12px;font-weight:500;color:var(--brand);letter-spacing:.14em}
.logo:hover .logo-main{color:var(--brand)}

.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-item{position:relative}
.nav-item > a{
  display:flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:var(--radius-btn);
  color:var(--text);font-size:15px;font-weight:500;text-decoration:none;
  position:relative;transition:background-color .18s var(--ease),color .18s var(--ease);
}
.nav-item > a:hover{background:#F0F6FB;color:var(--brand)}
.nav-item.active > a{color:var(--brand);font-weight:700}
.nav-item.active > a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand);
}
.caret{font-size:10px;color:var(--muted);transition:transform .18s var(--ease)}
.nav-item:hover .caret,.nav-item:focus-within .caret{transform:rotate(180deg);color:var(--brand)}

.mega-panel{
  position:absolute;top:calc(100% + 10px);left:50%;
  transform:translate(-50%,10px);
  width:780px;max-width:calc(100vw - 48px);
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-2);padding:24px;
  display:grid;grid-template-columns:1fr 1fr 1.15fr;gap:24px;
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s var(--ease);
}
.nav-item:hover .mega-panel,.nav-item:focus-within .mega-panel{
  opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0);
}
.mega-title{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.08em;margin-bottom:10px}
.mega-link{display:block;padding:8px 10px;border-radius:8px;font-size:14px;color:var(--text)}
.mega-link:hover{background:var(--soft);color:var(--brand)}
.mega-card{display:flex;gap:12px;align-items:flex-start;background:var(--soft);border-radius:12px;padding:12px}
.mega-card img{width:74px;height:54px;object-fit:cover;border-radius:8px;flex-shrink:0;background:#e8eef4}
.mega-card strong{display:block;font-size:14px;color:var(--brand-dark)}
.mega-card p{font-size:13px;color:var(--muted);line-height:1.6;margin-top:2px}

.nav-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--radius-btn);
  border:1px solid var(--border);background:#fff;color:var(--brand-dark);
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

.mobile-nav{display:none;border-top:1px solid var(--border);background:#fff}
.mobile-nav .m-link{display:block;padding:14px 0;border-bottom:1px solid var(--border);font-size:15px;color:var(--text);font-weight:500}
.mobile-nav .m-link.active{color:var(--brand);font-weight:700}
.mobile-nav .m-link:last-child{border-bottom:0}

/* ---------- 面包屑与页首 ---------- */
.crumb-bar{background:#fff;border-bottom:1px solid var(--border)}
.crumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:14px 0;font-size:13px;color:var(--muted)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb i{font-size:10px;color:#b3c2cf}
.crumb .current{color:var(--brand-dark);font-weight:600}

.page-hero{
  position:relative;overflow:hidden;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--border);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(245,248,251,.97) 0%,rgba(245,248,251,.92) 48%,rgba(245,248,251,.74) 100%);
}
.page-hero .wrap{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;padding:72px 0 64px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--border);border-radius:999px;
  padding:6px 14px;font-size:13px;font-weight:600;color:var(--brand);box-shadow:var(--shadow-1);
}
.eyebrow i{font-size:12px}
.page-hero h1{
  font-size:clamp(28px,3.4vw,42px);line-height:1.28;margin:18px 0 16px;
}
.page-hero .lead{font-size:16.5px;color:var(--muted);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-meta{display:flex;flex-wrap:wrap;gap:22px;margin-top:28px;font-size:13px;color:var(--muted)}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta i{color:var(--mint)}
.hero-figure{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:14px;box-shadow:var(--shadow-2);
}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:10px;background:#e8eef4}
.hero-figure .fig-cap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 4px 2px;font-size:13px;color:var(--muted)}
.hero-figure .fig-cap strong{color:var(--brand-dark);font-size:14px}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section.tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head .kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--brand);letter-spacing:.08em;margin-bottom:12px;
}
.section-head .kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand)}
.section-head h2{font-size:clamp(24px,2.6vw,32px);line-height:1.35;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:15.5px}
.bg-white{background:#fff}
.bg-soft{background:var(--soft)}

/* ---------- 指标条 ---------- */
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.metric-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(15,109,168,.4)}
.metric-num{
  font-size:clamp(30px,3.4vw,42px);font-weight:700;color:var(--brand-dark);line-height:1.1;
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.metric-num small{font-size:16px;font-weight:600;color:var(--brand);margin-left:4px}
.metric-label{margin-top:8px;font-size:14px;color:var(--muted)}
.metric-rule{margin-top:16px;height:1px;background:var(--border);position:relative}
.metric-rule::after{content:"";position:absolute;left:0;top:0;height:1px;width:38%;background:var(--mint)}

/* ---------- 清单区 ---------- */
.list-layout{display:grid;grid-template-columns:256px 1fr;gap:36px;align-items:start}
.toc{
  position:sticky;top:96px;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-1);
}
.toc-title{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.08em;margin-bottom:12px}
.toc a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;font-size:14px;color:var(--text)}
.toc a:hover{background:var(--soft);color:var(--brand)}
.toc a.is-active{background:var(--soft);color:var(--brand);font-weight:600}
.toc a span.dot{width:6px;height:6px;border-radius:50%;background:#c8d6e2;flex-shrink:0}
.toc a.is-active span.dot{background:var(--brand)}
.toc-note{margin-top:16px;padding-top:16px;border-top:1px solid var(--border);font-size:13px;color:var(--muted);line-height:1.7}

.group{margin-bottom:36px}
.group:last-child{margin-bottom:0}
.group-head{display:flex;align-items:center;gap:12px;margin-bottom:16px;scroll-margin-top:96px}
.group-head h3{font-size:20px}
.group-head .group-tag{
  font-size:12px;font-weight:700;color:var(--brand);background:var(--soft);
  border:1px solid rgba(15,109,168,.2);border-radius:var(--radius-badge);padding:3px 10px;
}
.group-head .count{margin-left:auto;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}

.list-items{display:flex;flex-direction:column;gap:16px}
.list-item{
  display:grid;grid-template-columns:56px 1fr auto;gap:20px;align-items:flex-start;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:22px 24px;box-shadow:var(--shadow-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.list-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(15,109,168,.4)}
.item-num{
  font-size:20px;font-weight:700;color:var(--brand);line-height:1.4;
  font-variant-numeric:tabular-nums;
}
.item-num::after{content:"";display:block;width:22px;height:2px;border-radius:2px;background:var(--border);margin-top:6px}
.list-item:hover .item-num::after{background:var(--mint)}
.item-body h4{font-size:17px;margin-bottom:8px}
.item-body p{font-size:14.5px;color:var(--muted);line-height:1.75}
.item-badges{display:flex;flex-direction:column;gap:8px;align-items:flex-end}
.pill{
  display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
  font-size:12.5px;font-weight:600;padding:5px 11px;border-radius:var(--radius-badge);
  background:var(--soft);color:var(--brand);border:1px solid rgba(15,109,168,.18);
}
.pill.mint{background:rgba(20,184,166,.1);color:#0e8b7e;border-color:rgba(20,184,166,.28)}
.pill.accent{background:rgba(255,122,47,.1);color:#c95a15;border-color:rgba(255,122,47,.3)}
.pill i{font-size:11px}

/* ---------- 场景卡 ---------- */
.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scene-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:rgba(15,109,168,.4)}
.scene-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#e8eef4}
.scene-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.scene-body h3{font-size:18px}
.scene-body p{font-size:14.5px;color:var(--muted);line-height:1.75}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:12px}

/* ---------- 口径说明 ---------- */
.notes{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.note{
  display:flex;gap:16px;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow-1);
}
.note .ic{
  width:46px;height:46px;flex-shrink:0;border-radius:12px;
  background:var(--soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:18px;
}
.note h4{font-size:16px;margin-bottom:6px}
.note p{font-size:14px;color:var(--muted);line-height:1.75}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-item{
  border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;margin-bottom:12px;background:#fff;box-shadow:var(--shadow-1);
}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  background:#fff;color:var(--brand-dark);font-size:16px;font-weight:600;
  padding:18px 22px;box-shadow:none;line-height:1.6;
}
.accordion-button:not(.collapsed){
  color:var(--brand);background:var(--soft);
  box-shadow:inset 3px 0 0 var(--brand);
}
.accordion-button:focus{box-shadow:0 0 0 3px rgba(15,109,168,.14)}
.accordion-button::after{
  width:16px;height:16px;background-size:16px;flex-shrink:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230F6DA8'%3E%3Cpath d='M6.2 3.3a1 1 0 0 1 1.4 0l4 4a1 1 0 0 1 0 1.4l-4 4a1 1 0 0 1-1.4-1.4L9.5 8 6.2 4.7a1 1 0 0 1 0-1.4z'/%3E%3C/svg%3E");
  transition:transform .18s var(--ease);
}
.accordion-button.collapsed::after{transform:none}
.accordion-button:not(.collapsed)::after{transform:rotate(90deg)}
.accordion-body{padding:4px 22px 22px;font-size:14.5px;color:var(--muted);line-height:1.85}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;
  background:var(--brand-dark);color:#E7EFF5;padding:56px 48px;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,184,166,.28) 0%,rgba(20,184,166,0) 68%);
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.4vw,30px);margin-bottom:10px}
.cta-inner p{color:#C9D6E0;font-size:15px;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:#C9D6E0;margin-top:88px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .logo-main{color:#fff}
.site-footer .logo-sub{color:var(--mint)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:#A9BDCC;max-width:340px}
.footer-title{font-size:14px;font-weight:700;color:#fff;letter-spacing:.06em;margin-bottom:16px}
.footer-link{display:block;font-size:14px;color:#C9D6E0;padding:6px 0;position:relative;width:fit-content}
.footer-link:hover{color:#fff;transform:translateX(3px)}
.footer-contact span{display:block;font-size:14px;color:#A9BDCC;padding:5px 0;line-height:1.7}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FA6B7;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-grid{grid-template-columns:1fr 1fr;gap:36px}
  .metrics{grid-template-columns:repeat(4,1fr);gap:18px}
}
@media (max-width:991px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .mobile-nav{display:block}
  .mega-panel{display:none}
  .section{padding:64px 0}
  .section.tight{padding:48px 0}
  .hero-grid{grid-template-columns:1fr;padding:52px 0 48px}
  .hero-figure{max-width:560px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .list-layout{grid-template-columns:1fr;gap:24px}
  .toc{position:static}
  .toc nav{display:flex;flex-wrap:wrap;gap:8px}
  .toc a{background:var(--soft);padding:8px 12px}
  .cards-3{grid-template-columns:1fr 1fr}
  .notes{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:44px 28px}
  .site-footer{margin-top:64px}
}
@media (max-width:767px){
  .wrap{padding:0 16px}
  .list-item{grid-template-columns:1fr;gap:12px}
  .item-num{display:flex;align-items:center;gap:10px}
  .item-num::after{margin-top:0;width:28px}
  .item-badges{flex-direction:row;flex-wrap:wrap;align-items:center}
  .cards-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .section{padding:56px 0}
  .section-head{margin-bottom:28px}
}
@media (max-width:575px){
  .nav-inner{height:60px}
  .logo-main{font-size:18px}
  .metrics{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .metric-num{font-size:32px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
}

/* roulang page: category2 */
:root{
  --brand:#0F6DA8;
  --brand-dark:#0c5b8c;
  --brand-deep:#0B3C5D;
  --accent:#FF7A2F;
  --accent-dark:#e9691f;
  --mint:#14B8A6;
  --danger:#D6455B;
  --text:#1A2733;
  --muted:#5B6B7A;
  --line:#E3EAF1;
  --page:#F5F8FB;
  --card:#FFFFFF;
  --r-card:14px;
  --r-btn:10px;
  --r-input:10px;
  --r-badge:6px;
  --sh1:0 2px 8px rgba(15,60,95,.06);
  --sh2:0 12px 32px rgba(15,60,95,.10);
  --ease:cubic-bezier(.2,.7,.3,1);
  --wrap:1240px;
  --bs-body-font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --bs-body-color:#1A2733;
  --bs-body-bg:#FFFFFF;
  --bs-primary:#0F6DA8;
  --bs-border-radius:14px;
  --bs-link-color:#0F6DA8;
  --bs-link-hover-color:#0c5b8c;
  --bs-border-color:#E3EAF1;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:#fff;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{font-weight:700;letter-spacing:0;color:var(--brand-deep);margin:0}
h1{font-size:clamp(28px,4vw,44px);line-height:1.25}
h2{font-size:clamp(24px,3vw,32px);line-height:1.3}
h3{font-size:19px;line-height:1.45}
p{margin:0 0 18px}
ul,ol{margin:0 0 18px;padding-left:1.2em}
li{margin-bottom:8px;line-height:1.8}
button{font-family:inherit}
input,select,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:96px 0}
.section-sm{padding:64px 0}
.section-alt{background:var(--page)}
.section-head{max-width:760px;margin-bottom:48px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--brand);background:rgba(15,109,168,.08);
  border-radius:var(--r-badge);padding:6px 12px;margin-bottom:16px;
}
.section-head p{color:var(--muted);margin:14px 0 0;font-size:16px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.nums{font-variant-numeric:tabular-nums}

/* header / nav */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh1)}
.nav-inner{
  display:flex;align-items:center;gap:28px;
  min-height:72px;
}
.logo{display:flex;align-items:baseline;gap:6px;flex:none;text-decoration:none}
.logo-main{font-size:21px;font-weight:700;color:var(--brand-deep);letter-spacing:.02em}
.logo-sub{font-size:12px;font-weight:600;color:var(--brand);background:rgba(15,109,168,.09);padding:2px 7px;border-radius:var(--r-badge)}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-item{position:relative}
.nav-item>a{
  display:inline-flex;align-items:center;gap:6px;
  min-height:44px;padding:0 14px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;color:var(--text);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-item>a:hover{background:rgba(15,109,168,.07);color:var(--brand)}
.nav-item.active>a{color:var(--brand);background:rgba(15,109,168,.09)}
.caret{font-size:11px;transition:transform .2s var(--ease)}
.nav-item:hover .caret,.nav-item:focus-within .caret{transform:rotate(180deg)}
.mega-panel{
  position:absolute;top:calc(100% + 10px);left:-16px;
  width:760px;max-width:88vw;
  display:grid;grid-template-columns:1fr 1fr 1.1fr;gap:26px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh2);padding:24px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s;
}
.nav-item:hover .mega-panel,.nav-item:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{font-size:13px;font-weight:700;color:var(--brand-deep);letter-spacing:.04em;margin:0 0 12px}
.mega-link{display:block;font-size:14px;color:var(--muted);padding:7px 0;border-radius:6px}
.mega-link:hover{color:var(--brand);padding-left:4px}
.mega-card{display:flex;gap:12px;align-items:flex-start}
.mega-card img{width:96px;height:64px;object-fit:cover;border-radius:10px;background:#eef3f8;flex:none}
.mega-card strong{display:block;font-size:14px;color:var(--brand-deep);margin-bottom:4px}
.mega-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.6}
.nav-cta{display:flex;align-items:center;gap:10px;flex:none}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  border-radius:var(--r-btn);background:#fff;color:var(--brand-deep);
}
.nav-toggle:hover{border-color:rgba(15,109,168,.45);color:var(--brand)}
.mobile-nav{border-top:1px solid var(--line);margin-top:10px;padding:12px 0 4px}
.mobile-nav a{display:block;padding:12px 4px;font-size:15px;font-weight:600;color:var(--text);border-bottom:1px solid var(--line)}
.mobile-nav a:last-of-type{border-bottom:0}
.mobile-nav a.active{color:var(--brand)}
@media(min-width:992px){.mobile-nav{display:none!important}}

/* buttons */
.btn{
  border-radius:var(--r-btn);font-weight:600;font-size:15px;
  padding:11px 22px;border:1px solid transparent;
  transition:transform .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px;box-shadow:none}
.btn:disabled{opacity:.45}
.btn-brand{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff;transform:translateY(-2px)}
.btn-accent{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;transform:translateY(-2px)}
.btn-outline-brand{background:#fff;border-color:rgba(15,109,168,.45);color:var(--brand)}
.btn-outline-brand:hover{border-color:var(--brand);background:rgba(15,109,168,.06);color:var(--brand);transform:translateY(-2px)}
.btn-ghost{background:transparent;border-color:transparent;color:var(--brand);padding-left:0;padding-right:0}
.btn-ghost:hover{color:var(--brand-dark);transform:none;text-decoration:underline}
.btn-arrow i{margin-left:8px;font-size:12px;transition:transform .18s var(--ease)}
.btn-arrow:hover i{transform:translateX(3px)}
.btn-lg{padding:14px 28px;font-size:16px}

/* hero */
.page-hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,rgba(245,248,251,.96),rgba(255,255,255,.98)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.page-hero .wrap{position:relative;z-index:2;padding-top:72px;padding-bottom:72px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:20px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brand)}
.crumb i{font-size:10px;color:#9fb1c0}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;
  color:var(--brand);background:#fff;border:1px solid rgba(15,109,168,.25);
  border-radius:999px;padding:6px 14px;margin-bottom:18px;box-shadow:var(--sh1);
}
.page-hero h1{margin-bottom:18px}
.hero-lead{font-size:17px;color:var(--muted);max-width:620px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.hero-meta{display:flex;flex-wrap:wrap;gap:26px;font-size:13px;color:var(--muted)}
.hero-meta strong{display:block;font-size:22px;color:var(--brand-deep);font-variant-numeric:tabular-nums}
.hero-figure{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--sh2);overflow:hidden;
}
.hero-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#eef3f8}
.hero-figure figcaption{font-size:13px;color:var(--muted);padding:14px 18px;border-top:1px solid var(--line);background:#fff}

/* intro strip */
.intro-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:start}
.intro-grid .lead-text{font-size:16.5px;color:#33475a}
.fact-list{list-style:none;padding:0;margin:0;display:grid;gap:14px}
.fact-list li{
  display:flex;gap:12px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 18px;box-shadow:var(--sh1);margin:0;
}
.fact-list i{color:var(--mint);font-size:16px;margin-top:4px}
.fact-list strong{display:block;font-size:15px;color:var(--brand-deep)}
.fact-list span{font-size:13.5px;color:var(--muted);line-height:1.65}

/* timeline */
.timeline{position:relative;display:grid;gap:56px}
.timeline::before{
  content:"";position:absolute;top:10px;bottom:10px;left:50%;
  width:2px;transform:translateX(-50%);
  background:linear-gradient(180deg,rgba(15,109,168,.35),rgba(20,184,166,.35));
}
.step{display:grid;grid-template-columns:1fr 92px 1fr;align-items:center;gap:0}
.step-card{
  grid-column:1;grid-row:1;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--sh1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:rgba(15,109,168,.4)}
.step-dot{
  grid-column:2;grid-row:1;justify-self:center;
  width:56px;height:56px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:#fff;border:2px solid var(--brand);color:var(--brand);
  font-size:17px;font-weight:700;font-variant-numeric:tabular-nums;
  box-shadow:0 0 0 8px #fff,var(--sh1);
}
.step-media{grid-column:3;grid-row:1;margin:0}
.step-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-card);border:1px solid var(--line);background:#eef3f8;
}
.step-media figcaption{font-size:13px;color:var(--muted);margin-top:10px;line-height:1.6}
.step:nth-child(even) .step-card{grid-column:3}
.step:nth-child(even) .step-media{grid-column:1;text-align:right}
.step-kicker{font-size:13px;font-weight:700;color:var(--accent);margin:0 0 8px;letter-spacing:.04em}
.step-card h3{margin-bottom:10px}
.step-card p{font-size:15px;color:var(--muted);margin-bottom:14px}
.step-points{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.step-points li{display:flex;gap:9px;font-size:14px;color:#33475a;margin:0}
.step-points i{color:var(--brand);font-size:13px;margin-top:5px}

/* pace cards */
.pace-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.pace-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh1);position:relative;overflow:hidden;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.pace-card:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:rgba(15,109,168,.4)}
.pace-card::after{content:"";position:absolute;left:24px;right:24px;bottom:18px;height:1px;background:var(--line)}
.pace-num{font-size:40px;font-weight:700;color:var(--brand);line-height:1.1;font-variant-numeric:tabular-nums}
.pace-card.mint .pace-num{color:var(--mint)}
.pace-label{font-size:14px;color:var(--muted);margin:8px 0 26px}

/* card grid */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.info-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh1);display:flex;flex-direction:column;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.info-card:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:rgba(15,109,168,.4)}
.info-card .thumb{width:100%;aspect-ratio:16/10;object-fit:cover;background:#eef3f8;border-bottom:1px solid var(--line)}
.info-card .body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.info-card h3{font-size:17px}
.info-card p{font-size:14.5px;color:var(--muted);margin:0}
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;align-self:flex-start;
  font-size:12.5px;font-weight:700;color:var(--brand);
  background:rgba(15,109,168,.09);border-radius:var(--r-badge);padding:5px 10px;
}
.badge-soft.warn{color:var(--accent);background:rgba(255,122,47,.12)}
.badge-soft.mint{color:#0d8d80;background:rgba(20,184,166,.12)}
.icon-box{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(15,109,168,.09);color:var(--brand);font-size:17px;flex:none;
}
.icon-box.warn{background:rgba(255,122,47,.13);color:var(--accent)}

/* faq */
.faq-wrap{max-width:900px;margin:0 auto}
.accordion-item{
  border:1px solid var(--line);border-radius:var(--r-card)!important;
  background:#fff;margin-bottom:14px;overflow:hidden;box-shadow:var(--sh1);
}
.accordion-button{
  font-size:16.5px;font-weight:600;color:var(--brand-deep);
  background:#fff;padding:20px 52px 20px 22px;border:0;
  box-shadow:none!important;position:relative;
}
.accordion-button::after{
  background-image:none;
  content:"\f105";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:22px;top:50%;transform:translateY(-50%);
  width:auto;height:auto;font-size:14px;color:var(--brand);
  transition:transform .2s var(--ease);
}
.accordion-button:not(.collapsed){color:var(--brand);background:#fff;border-left:3px solid var(--brand)}
.accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(90deg)}
.accordion-button:focus{z-index:1;box-shadow:none;border-color:var(--line)}
.accordion-body{font-size:15px;color:var(--muted);padding:0 22px 22px;line-height:1.85}

/* cta / form */
.cta-section{background:var(--brand-deep);color:#dce8f2;padding:88px 0}
.cta-section h2{color:#fff}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta-section p{color:#b9cbdb}
.cta-points{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:12px}
.cta-points li{display:flex;gap:11px;align-items:flex-start;color:#dce8f2;font-size:15px;margin:0}
.cta-points i{color:var(--mint);margin-top:5px;font-size:14px}
.form-card{background:#fff;border-radius:var(--r-card);padding:30px;box-shadow:var(--sh2)}
.form-row{margin-bottom:18px}
.form-label{font-size:14px;font-weight:600;color:var(--brand-deep);margin-bottom:7px;display:block}
.form-control,.form-select{
  border-radius:var(--r-input);border:1px solid var(--line);
  padding:11px 14px;font-size:15px;color:var(--text);background:#fff;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.form-control:focus,.form-select:focus{
  border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,109,168,.14);outline:none;
}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand)}
.form-check-input:focus{box-shadow:0 0 0 3px rgba(15,109,168,.14);border-color:var(--brand)}
.form-note{font-size:13px;color:var(--muted);margin:12px 0 0;line-height:1.7}
.form-feedback{
  display:none;font-size:14px;color:#0d8d80;background:rgba(20,184,166,.1);
  border-radius:var(--r-badge);padding:10px 14px;margin-top:14px;
}
.form-feedback.show{display:block}
.required{color:var(--danger)}

/* footer */
.site-footer{background:var(--brand-deep);color:#C9D6E0;padding:64px 0 28px}
.site-footer a{color:#C9D6E0}
.site-footer a:hover{color:#fff;text-decoration:underline}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-main{color:#fff}
.footer-brand .logo-sub{color:#9fd0ef;background:rgba(255,255,255,.12)}
.footer-brand p{font-size:14px;color:#a9bccd;line-height:1.8;margin:0}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin:0 0 16px;letter-spacing:.03em}
.footer-link{display:block;font-size:14px;padding:6px 0;color:#C9D6E0;transition:transform .18s var(--ease),color .18s var(--ease)}
.footer-link:hover{transform:translateX(3px);text-decoration:none}
.footer-contact span{display:block;font-size:14px;color:#a9bccd;padding:5px 0;line-height:1.7}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);margin-top:44px;padding-top:22px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:#9db2c6;
}

/* responsive */
@media(max-width:1199px){
  .pace-grid{grid-template-columns:repeat(2,1fr)}
  .card-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:991px){
  .nav-links,.mega-panel{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-inner{min-height:60px}
  .nav-cta .btn-accent{display:none}
  .section{padding:64px 0}
  .section-sm{padding:48px 0}
  .page-hero .wrap{padding-top:44px;padding-bottom:52px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .intro-grid{grid-template-columns:1fr;gap:32px}
  .cta-grid{grid-template-columns:1fr;gap:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .timeline::before{left:21px;transform:none}
  .timeline{gap:36px}
  .step{grid-template-columns:44px 1fr;row-gap:18px;align-items:start}
  .step .step-dot{grid-column:1;grid-row:1;justify-self:start;width:44px;height:44px;font-size:15px;box-shadow:0 0 0 6px #fff}
  .step .step-card{grid-column:2;grid-row:1}
  .step .step-media,.step:nth-child(even) .step-media{grid-column:2;grid-row:2;text-align:left}
  .step:nth-child(even) .step-card{grid-column:2}
  .section-head{margin-bottom:32px}
}
@media(max-width:575px){
  .wrap{padding:0 16px}
  body{font-size:15.5px}
  .pace-grid,.card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .step-card{padding:20px 18px}
  .hero-actions .btn{width:100%}
  .form-card{padding:22px}
  .hero-meta{gap:18px}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* roulang page: category3 */
:root{
  --brand:#0F6DA8;
  --brand-600:#0C5A8B;
  --brand-dark:#0B3C5D;
  --accent:#FF7A2F;
  --accent-600:#F0681C;
  --mint:#14B8A6;
  --ink:#1A2733;
  --muted:#5B6B7A;
  --line:#E3EAF1;
  --bg:#F5F8FB;
  --card:#FFFFFF;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-input:10px;
  --radius-badge:6px;
  --shadow-sm:0 2px 8px rgba(15,60,95,.06);
  --shadow-lg:0 12px 32px rgba(15,60,95,.10);
  --container:1240px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-primary:#0F6DA8;
  --bs-body-bg:#F5F8FB;
  --bs-body-color:#1A2733;
  --bs-border-color:#E3EAF1;
  --bs-border-radius:12px;
  --bs-link-color:#0F6DA8;
  --bs-link-hover-color:#0C5A8B;
  --bs-font-sans-serif:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-body-font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--bs-body-font-family);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{color:var(--brand-600)}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding-left:1.1rem}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.wrap{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
.section{padding:92px 0}
.section.tight{padding:64px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);background:rgba(15,109,168,.08);
  border-radius:var(--radius-badge);padding:6px 12px;margin-bottom:16px;
}
.eyebrow.mint{color:#0E8C80;background:rgba(20,184,166,.12)}
h1{font-size:clamp(28px,4vw,42px);line-height:1.28;font-weight:700;letter-spacing:0;color:var(--brand-dark)}
h2{font-size:clamp(24px,2.6vw,31px);line-height:1.35;font-weight:700;color:var(--brand-dark)}
h3{font-size:19px;line-height:1.5;font-weight:700;color:var(--brand-dark)}
.lead{font-size:17px;line-height:1.85;color:var(--muted)}
.tabular{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;border-bottom:1px solid var(--line);
  transition:box-shadow 220ms var(--ease);
}
.site-header.is-scrolled{box-shadow:0 4px 18px rgba(15,60,95,.08)}
.nav-inner{display:flex;align-items:center;gap:28px;min-height:72px}
.logo{display:inline-flex;align-items:baseline;gap:8px;flex-shrink:0}
.logo-main{font-size:21px;font-weight:700;color:var(--brand-dark);letter-spacing:.01em}
.logo-sub{
  font-size:12px;font-weight:700;color:var(--brand);
  background:rgba(15,109,168,.10);border-radius:6px;padding:2px 7px;letter-spacing:.04em;
}
.logo:hover .logo-main{color:var(--brand)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-item{position:relative}
.nav-item > a{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;color:var(--ink);
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.nav-item > a:hover{background:#F2F7FB;color:var(--brand)}
.nav-item.active > a{color:var(--brand);background:rgba(15,109,168,.09);font-weight:700}
.caret{font-size:10px;color:var(--muted);transition:transform 180ms var(--ease)}
.nav-item.has-mega:hover .caret{transform:rotate(180deg)}
.nav-cta{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:var(--radius-btn);color:var(--brand-dark);font-size:17px;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}

/* Mega 面板 */
.mega-panel{
  position:absolute;top:calc(100% + 12px);left:50%;
  transform:translateX(-50%) translateY(10px);
  width:min(880px,92vw);
  background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-lg);padding:26px;
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity 180ms var(--ease),transform 180ms var(--ease),visibility 180ms;
}
.nav-item.has-mega:hover .mega-panel,
.nav-item.has-mega:focus-within .mega-panel{
  opacity:1;visibility:visible;pointer-events:auto;
  transform:translateX(-50%) translateY(0);
}
.mega-title{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--muted);margin-bottom:12px}
.mega-link{
  display:block;padding:9px 10px;border-radius:8px;
  font-size:14px;color:var(--ink);
  transition:background 160ms var(--ease),color 160ms var(--ease);
}
.mega-link:hover{background:#F2F7FB;color:var(--brand)}
.mega-card{display:flex;gap:12px;align-items:center;border:1px solid var(--line);border-radius:12px;padding:12px;background:#FBFDFF}
.mega-card img{width:64px;height:48px;object-fit:cover;border-radius:8px;background:#EDF2F7;flex-shrink:0}
.mega-card strong{display:block;font-size:14px;color:var(--brand-dark)}
.mega-card p{font-size:12.5px;line-height:1.6;color:var(--muted)}

/* 移动端折叠导航 */
.mobile-nav{border-top:1px solid var(--line);padding:14px 0 18px}
.mobile-links{display:flex;flex-direction:column;gap:4px}
.mobile-links a{
  display:block;padding:12px 12px;border-radius:var(--radius-btn);
  font-size:15px;color:var(--ink);font-weight:500;
}
.mobile-links a:hover,.mobile-links a.active{background:#F2F7FB;color:var(--brand)}
.mobile-links .btn{margin-top:10px;color:#fff}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:11px 22px;
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;border-radius:var(--radius-btn);
  transition:background 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
  cursor:pointer;
}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-600);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(15,109,168,.22)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:0 8px 20px rgba(255,122,47,.26)}
.btn-outline-brand{background:#fff;color:var(--brand);border-color:rgba(15,109,168,.42)}
.btn-outline-brand:hover{background:rgba(15,109,168,.07);color:var(--brand);border-color:var(--brand);transform:translateY(-2px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;transform:translateY(-2px)}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:7px;
  font-weight:600;font-size:15px;color:var(--brand);background:none;border:none;padding:0;min-height:auto;
}
.btn-link-arrow i{transition:transform 180ms var(--ease)}
.btn-link-arrow:hover i{transform:translateX(4px)}
.btn:disabled,.btn.disabled{opacity:.45;pointer-events:none}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  padding:64px 0 56px;
}
.page-hero::before{content:"";position:absolute;inset:0;background:rgba(255,255,255,.9)}
.page-hero > .wrap{position:relative;z-index:1}
.breadcrumb-nav{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.breadcrumb-nav a{color:var(--brand);font-weight:500}
.breadcrumb-nav i{font-size:9px;color:#A9B8C6}
.page-hero h1{max-width:900px;margin-bottom:18px}
.page-hero .lead{max-width:740px;font-size:16.5px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:14px 40px;margin-top:36px;
  padding-top:24px;border-top:1px solid rgba(15,109,168,.16);
}
.hero-facts div{display:flex;align-items:baseline;gap:9px}
.hero-facts strong{font-size:22px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums}
.hero-facts span{font-size:13.5px;color:var(--muted)}

/* ---------- 对照表 ---------- */
.compare-shell{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.compare{width:100%;min-width:760px;border-collapse:collapse}
table.compare thead th{
  background:#F3F8FC;text-align:left;padding:16px 20px;
  font-size:13.5px;font-weight:700;color:var(--brand-dark);
  border-bottom:1px solid var(--line);white-space:nowrap;
}
table.compare thead th.col-hl{background:#E9F3FA;color:var(--brand)}
table.compare tbody th{
  text-align:left;padding:16px 20px;width:22%;
  font-size:15px;font-weight:700;color:var(--brand);
  border-bottom:1px solid var(--line);background:#FCFDFE;
}
table.compare tbody td{
  padding:16px 20px;font-size:14.5px;color:var(--ink);
  border-bottom:1px solid var(--line);vertical-align:top;
}
table.compare tbody td.col-hl{background:rgba(15,109,168,.04)}
table.compare tbody tr:last-child th,
table.compare tbody tr:last-child td{border-bottom:none}
table.compare tbody tr:hover th,
table.compare tbody tr:hover td{background:#F7FBFE}
table.compare tbody tr:hover td.col-hl{background:rgba(15,109,168,.07)}
.mark{display:inline-flex;align-items:flex-start;gap:8px;line-height:1.6}
.mark i{font-size:13px;margin-top:4px;flex-shrink:0}
.mark-yes i{color:var(--mint)}
.mark-part i{color:var(--accent)}
.mark-no i{color:#9AAAB8}
.table-note{margin-top:16px;font-size:13.5px;color:var(--muted)}
.scroll-hint{display:none;margin-top:12px;font-size:13px;color:var(--muted)}
.scroll-hint i{margin-right:6px;color:var(--brand)}

/* ---------- 卡片 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:rgba(15,109,168,.4)}
.card-media{aspect-ratio:16/10;background:#EDF2F7;overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-tag{
  align-self:flex-start;font-size:12.5px;font-weight:700;color:var(--brand);
  background:rgba(15,109,168,.09);border-radius:var(--radius-badge);padding:4px 10px;
}
.card-tag.warm{color:#B44E12;background:rgba(255,122,47,.13)}
.card-body p{font-size:14.5px;line-height:1.8;color:var(--muted)}
.card-body .btn-link-arrow{margin-top:auto;padding-top:6px}

/* ---------- 场景建议双列 ---------- */
.fit-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.fit-box{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-sm);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
}
.fit-box:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:rgba(15,109,168,.35)}
.fit-box.accent{border-color:rgba(255,122,47,.35);background:#FFFCF9}
.fit-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.fit-icon{
  width:44px;height:44px;border-radius:12px;flex-shrink:0;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(15,109,168,.1);color:var(--brand);font-size:17px;
}
.fit-box.accent .fit-icon{background:rgba(255,122,47,.14);color:var(--accent-600)}
.fit-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:13px}
.fit-list li{display:flex;gap:11px;font-size:14.5px;line-height:1.75;color:var(--ink)}
.fit-list i{color:var(--mint);font-size:13px;margin-top:6px;flex-shrink:0}
.fit-box.accent .fit-list i{color:var(--accent)}

/* ---------- FAQ ---------- */
.faq-accordion{
  --bs-accordion-border-color:var(--line);
  --bs-accordion-btn-color:var(--brand-dark);
  --bs-accordion-active-color:var(--brand);
  --bs-accordion-active-bg:#F7FBFE;
  --bs-accordion-btn-focus-box-shadow:none;
  --bs-accordion-border-radius:12px;
  --bs-accordion-inner-border-radius:12px;
}
.faq-accordion .accordion-item{
  border:1px solid var(--line);border-radius:12px;overflow:hidden;
  margin-bottom:12px;background:#fff;box-shadow:var(--shadow-sm);
}
.faq-accordion .accordion-button{
  font-size:16px;font-weight:700;color:var(--brand-dark);
  padding:18px 52px 18px 20px;background:#fff;box-shadow:none;
  transition:color 180ms var(--ease),background 180ms var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--brand);background:#F7FBFE;
  box-shadow:inset 3px 0 0 var(--brand);
}
.faq-accordion .accordion-button:focus{box-shadow:none}
.faq-accordion .accordion-button:focus-visible{outline:2px solid var(--brand);outline-offset:-3px}
.faq-accordion .accordion-button::after{
  content:"\f054";font-family:"Font Awesome 6 Free";font-weight:900;
  background-image:none;font-size:13px;color:var(--brand);
  width:auto;height:auto;transition:transform 200ms var(--ease);
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(90deg)}
.faq-accordion .accordion-body{
  padding:4px 22px 22px;font-size:14.8px;line-height:1.85;color:var(--muted);
  border-top:1px solid var(--line);
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-dark);border-radius:20px;padding:48px;
  display:grid;grid-template-columns:1.5fr 1fr;gap:32px;align-items:center;
  color:#C9D6E0;
}
.cta-band h2{color:#fff;margin-bottom:14px}
.cta-band p{font-size:15px;line-height:1.85;color:#C9D6E0;max-width:620px}
.cta-actions{display:flex;flex-direction:column;gap:14px}
.cta-actions .btn{width:100%}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-dark);color:#C9D6E0;padding-top:64px;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:32px;
  padding-bottom:44px;
}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-main{color:#fff}
.footer-brand .logo-sub{color:#9EC6E0;background:rgba(255,255,255,.12)}
.footer-brand p{font-size:14px;line-height:1.85;color:#AFC2D1;max-width:340px}
.footer-title{font-size:13px;font-weight:700;letter-spacing:.08em;color:#fff;margin-bottom:14px}
.footer-link{
  display:block;padding:6px 0;font-size:14px;color:#C9D6E0;
  transition:color 160ms var(--ease),transform 160ms var(--ease);
}
.footer-link:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;transform:translateX(2px)}
.footer-contact span{display:block;font-size:14px;line-height:1.9;color:#C9D6E0}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0 28px;display:flex;justify-content:space-between;
  gap:12px;flex-wrap:wrap;font-size:13px;color:#9EB2C2;
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:24px}
}
@media (max-width:991.98px){
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-inner{gap:16px;justify-content:space-between}
  .section{padding:68px 0}
  .section.tight{padding:52px 0}
  .cta-band{grid-template-columns:1fr;padding:36px}
  .fit-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px}
  .site-header .nav-inner{min-height:60px}
  .logo-main{font-size:19px}
  .section{padding:56px 0}
  .section.tight{padding:44px 0}
  .card-grid{grid-template-columns:1fr}
  .page-hero{padding:44px 0 40px}
  .hero-actions .btn{width:100%}
  .hero-facts{gap:12px 26px}
  .hero-facts strong{font-size:19px}
  .scroll-hint{display:block}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
}