/* roulang page: index */
:root{
  --brand-700:#16528F;
  --brand-900:#0B2E52;
  --brand-600:#1E63B0;
  --brand-100:#E6EFFA;
  --brand-50:#F3F7FC;
  --accent:#F26430;
  --page:#F7F9FC;
  --card:#FFFFFF;
  --text:#1B2430;
  --text-2:#5A6675;
  --border:#E3E9F2;
  --border-2:#CFDCEB;
  --input:#FBFCFE;
  --r-lg:16px;
  --r-md:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh1:0 1px 2px rgba(16,42,73,.05),0 8px 24px rgba(16,42,73,.06);
  --sh2:0 4px 12px rgba(16,42,73,.08),0 16px 32px rgba(16,42,73,.09);
  --sh3:0 6px 16px rgba(22,99,176,.25);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--page);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
::selection{background:var(--brand-100);color:var(--brand-900)}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.wrap{padding:0 32px}}
@media(min-width:1280px){.wrap{padding:0 24px}}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--brand-900);color:#C7DAEF;font-size:13px;height:36px;display:flex;align-items:center;overflow:hidden}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px}
.topbar__tip{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar__links{display:none;gap:22px;flex:none}
.topbar__links a{transition:color .2s ease}
.topbar__links a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
@media(min-width:900px){.topbar__links{display:flex}}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .24s ease}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,42,73,.07)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.site-header.is-scrolled .nav{height:60px}
@media(max-width:520px){.nav{height:64px}}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-600));
  display:grid;place-items:center;color:#fff;font-weight:700;font-size:17px;letter-spacing:.5px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:17px;font-weight:700;letter-spacing:-.3px}
.brand-text span{font-size:12px;color:var(--text-2);letter-spacing:.12em;margin-top:2px}
.menu{display:none;align-items:center;gap:30px}
@media(min-width:1024px){.menu{display:flex}}
.menu a{position:relative;font-size:15px;font-weight:500;color:#33415A;padding:6px 0;transition:color .2s ease}
.menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--brand-700);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.menu a:hover{color:var(--brand-700)}
.menu a:hover::after,.menu a.active::after{transform:scaleX(1)}
.menu a.active{color:var(--brand-700)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--sh3)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-1px)}
.btn-primary:active{background:#14487E;transform:translateY(0);box-shadow:none}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(242,100,48,.28)}
.btn-accent:hover{background:#DE5626;transform:translateY(-1px)}
.btn-accent:active{background:#C94A1E;transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand-700);border-color:var(--border-2)}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-600);transform:translateY(-1px)}
.btn-ghost:active{background:#D6E6F8;transform:translateY(0)}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-weight:600;font-size:15px}
.btn-link:hover{text-decoration:underline;text-underline-offset:3px}

.nav-toggle{
  display:inline-flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 11px;border-radius:var(--r-btn);
  background:#fff;border:1px solid var(--border);cursor:pointer;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--brand-900);transition:transform .2s ease,opacity .2s ease}
@media(min-width:1024px){.nav-toggle{display:none}}

/* ---------- 移动端抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(11,46,82,.45);z-index:70;opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:80;background:#fff;
  transform:translateX(102%);transition:transform .28s ease;display:flex;flex-direction:column;
  box-shadow:-12px 0 32px rgba(16,42,73,.16);overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--border)}
.drawer__close{width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--border);background:#fff;font-size:22px;line-height:1;cursor:pointer}
.drawer__close:hover{background:var(--brand-50)}
.drawer__menu{display:flex;flex-direction:column;padding:8px 12px}
.drawer__menu a{padding:14px 8px;border-bottom:1px solid var(--border);font-size:16px;font-weight:500;color:#33415A}
.drawer__menu a.active{color:var(--brand-700);font-weight:600}
.drawer__foot{padding:20px;margin-top:auto;border-top:1px solid var(--border)}
.drawer__note{font-size:13px;color:var(--text-2);margin-top:12px;text-align:center}

/* ---------- 首页 Hero ---------- */
.hero{position:relative;overflow:hidden;padding:56px 0 64px;background:linear-gradient(180deg,#FFFFFF 0%,var(--brand-50) 100%)}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(22,82,143,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(22,82,143,.055) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 72%);
}
.hero__grid{position:relative;display:grid;gap:40px;align-items:center}
@media(min-width:1024px){
  .hero{padding:80px 0 92px}
  .hero__grid{grid-template-columns:6fr 5fr;gap:56px}
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:600;letter-spacing:.02em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.hero h1{
  margin-top:20px;font-size:32px;line-height:1.3;font-weight:700;letter-spacing:-.5px;color:var(--brand-900);
}
@media(min-width:768px){.hero h1{font-size:40px}}
@media(min-width:1024px){.hero h1{font-size:44px}}
.hero__sub{margin-top:18px;font-size:18px;color:var(--text-2);max-width:36em}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero__trust{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:28px}
.hero__trust li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-2)}
.hero__trust li::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--brand-600);flex:none}
.hero__media{position:relative}
.hero__media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:18px;box-shadow:var(--sh2);background:#E8EEF6;
}
.hero__dot{
  position:absolute;left:-16px;bottom:-16px;width:96px;height:96px;border-radius:18px;
  background-image:radial-gradient(var(--brand-600) 1.6px,transparent 1.6px);
  background-size:14px 14px;opacity:.35;pointer-events:none;
}
@media(max-width:767px){.hero__dot{display:none}}

/* ---------- 通用板块 ---------- */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:72px 0}}
@media(min-width:1024px){.section{padding:96px 0}}
.section--tint{background:var(--brand-50)}
.section--plain{background:#fff}
.section__head{max-width:760px;margin-bottom:32px}
@media(min-width:1024px){.section__head{margin-bottom:44px}}
.section__head h2{font-size:26px;line-height:1.35;font-weight:600;color:var(--brand-900);letter-spacing:-.3px}
@media(min-width:768px){.section__head h2{font-size:30px}}
.section__head p{margin-top:12px;color:var(--text-2);font-size:16px}
.section__head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;max-width:none;flex-wrap:wrap}

/* ---------- Bento 服务网格 ---------- */
.bento{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:768px){.bento{grid-template-columns:repeat(12,1fr);gap:24px}}
.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  box-shadow:var(--sh1);transition:box-shadow .24s ease,transform .24s ease,border-color .24s ease;
}
.card:hover{box-shadow:var(--sh2);transform:translateY(-2px);border-color:var(--border-2)}
.bento__big{padding:26px 26px 24px;display:flex;flex-direction:column;gap:14px}
.bento__small{padding:24px;display:flex;flex-direction:column;gap:10px}
@media(min-width:768px){
  .bento__big:nth-child(1){grid-column:span 7}
  .bento__big:nth-child(2){grid-column:span 5}
  .bento__small{grid-column:span 4}
}
.num{
  font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--accent);
}
.bento h3{font-size:20px;font-weight:600;color:var(--brand-900);line-height:1.4;transition:color .2s ease}
.card:hover h3{color:var(--brand-700)}
.bento p{font-size:15px;color:var(--text-2)}
.bento__big img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-img);background:#E8EEF6;margin-top:auto}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-weight:600;font-size:15px}
.text-link::after{content:"→";transition:transform .2s ease}
.text-link:hover{text-decoration:underline;text-underline-offset:3px}
.text-link:hover::after{transform:translateX(4px)}

/* ---------- 数据指标 ---------- */
.stats{background:var(--brand-50);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.stats__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 16px}
@media(min-width:900px){.stats__grid{grid-template-columns:repeat(4,1fr);gap:0}}
.stat{padding:0 8px;text-align:left}
@media(min-width:900px){
  .stat{padding:0 28px;border-left:1px solid var(--border-2)}
  .stat:first-child{border-left:none;padding-left:0}
}
.stat__num{font-size:38px;line-height:1.1;font-weight:700;color:var(--brand-700)}
@media(min-width:768px){.stat__num{font-size:46px}}
.stat__num em{font-style:normal;font-size:18px;margin-left:4px;color:var(--accent)}
.stat__label{margin-top:8px;font-size:15px;font-weight:600;color:var(--brand-900)}
.stat__desc{margin-top:4px;font-size:14px;color:var(--text-2)}
.stats__note{margin-top:32px;font-size:13px;color:var(--text-2);border-top:1px solid var(--border-2);padding-top:16px}

/* ---------- 案例 / 图文交错 ---------- */
.case{display:grid;gap:24px;align-items:center;padding:24px 0;border-top:1px solid var(--border)}
.case:first-of-type{border-top:none;padding-top:0}
@media(min-width:900px){
  .case{grid-template-columns:5fr 7fr;gap:44px;padding:32px 0}
  .case--flip .case__media{order:2}
  .case--flip .case__body{order:1}
}
.case__media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-md);background:#E8EEF6}
.case__tag{display:inline-block;padding:4px 12px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600}
.case__body h3{margin-top:14px;font-size:22px;font-weight:600;color:var(--brand-900);line-height:1.4}
.case__body p{margin-top:12px;font-size:15px;color:var(--text-2)}
.case__body .text-link{margin-top:16px}

/* ---------- 方案横向列表 ---------- */
.plan{background:#fff;border-top:1px solid var(--border)}
.plan__row{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;
  padding:22px 12px;border-bottom:1px solid var(--border);
  transition:background-color .22s ease,transform .22s ease;
}
.plan__row:last-child{border-bottom:none}
.plan__row:hover{background:var(--brand-50);transform:translateX(4px)}
.plan__no{font-size:14px;font-weight:700;color:var(--accent);letter-spacing:.1em;width:34px;flex:none}
.plan__title{font-size:17px;font-weight:600;color:var(--brand-900)}
.plan__desc{font-size:14px;color:var(--text-2);margin-top:2px}
.plan__arrow{color:var(--brand-700);font-size:18px;transition:transform .22s ease}
.plan__row:hover .plan__arrow{transform:translateX(4px)}

/* ---------- 资讯卡片 ---------- */
.news__grid{display:grid;gap:22px;grid-template-columns:1fr}
@media(min-width:640px){.news__grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.news__grid{grid-template-columns:repeat(3,1fr);gap:26px}}
.news-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-lg);box-shadow:var(--sh1);overflow:hidden;
  transition:box-shadow .24s ease,transform .24s ease,border-color .24s ease;
}
.news-card:hover{box-shadow:var(--sh2);transform:translateY(-2px);border-color:var(--border-2)}
.news-card__thumb{aspect-ratio:16/9;overflow:hidden;background:#E8EEF6}
.news-card__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.news-card:hover .news-card__thumb img{transform:scale(1.03)}
.news-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.badge{display:inline-block;align-self:flex-start;padding:3px 11px;border-radius:999px;background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600}
.news-card h3{
  font-size:17px;font-weight:600;line-height:1.5;color:var(--brand-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease;
}
.news-card:hover h3{color:var(--brand-700)}
.news-card p{
  font-size:14px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card__meta{margin-top:auto;padding-top:12px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-2)}
.news-card__meta strong{color:var(--brand-700);font-weight:600}
.empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center;
  padding:56px 24px;background:#fff;border:1px dashed var(--border-2);border-radius:var(--r-lg);
}
.empty__icon{width:52px;height:52px;border-radius:16px;background:var(--brand-100);display:grid;place-items:center;color:var(--brand-600);font-size:22px}
.empty p{font-size:15px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto}
.faq details{border-bottom:1px solid var(--border)}
.faq details:first-child{border-top:1px solid var(--border)}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 4px;font-size:17px;font-weight:600;color:var(--brand-900);transition:background-color .2s ease,color .2s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{background:var(--brand-50)}
.faq summary::after{
  content:"+";flex:none;width:26px;height:26px;border-radius:8px;background:var(--brand-100);color:var(--brand-700);
  display:grid;place-items:center;font-size:18px;line-height:1;transition:transform .2s ease,background-color .2s ease;
}
.faq details[open] summary{color:var(--brand-700)}
.faq details[open] summary::after{content:"−";background:var(--accent);color:#fff}
.faq__body{padding:0 4px 22px;font-size:15px;color:var(--text-2);animation:fadeIn .2s ease}
.faq__body p+p{margin-top:10px}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- 联系 / CTA ---------- */
.contact{background:var(--brand-900);color:#D7E5F4}
.contact__grid{display:grid;gap:36px}
@media(min-width:1024px){.contact__grid{grid-template-columns:1fr 1fr;gap:64px;align-items:center}}
.contact h2{font-size:26px;font-weight:600;line-height:1.4;color:#fff}
@media(min-width:768px){.contact h2{font-size:30px}}
.contact__lead{margin-top:14px;font-size:16px;color:#B9CFE6;max-width:32em}
.contact__list{margin-top:26px;display:grid;gap:12px}
.contact__list li{display:flex;gap:12px;font-size:15px;color:#CFE0F1;align-items:flex-start}
.contact__list b{color:#fff;font-weight:600;min-width:70px}
.form{background:#fff;border-radius:var(--r-lg);padding:26px;box-shadow:0 20px 50px rgba(4,20,38,.35);color:var(--text)}
.form h3{font-size:19px;font-weight:600;color:var(--brand-900)}
.form p.hint{margin-top:6px;font-size:14px;color:var(--text-2)}
.form__row{margin-top:16px}
.form label{display:block;font-size:14px;font-weight:600;color:#33415A;margin-bottom:6px}
.form input,.form textarea{
  width:100%;height:44px;padding:0 14px;border-radius:var(--r-btn);border:1px solid var(--border);
  background:var(--input);transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.form textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--brand-600);background:#fff;box-shadow:0 0 0 3px rgba(30,99,176,.14)}
.form input::placeholder,.form textarea::placeholder{color:#98A5B5}
.form .btn{width:100%;margin-top:20px}
.form__note{margin-top:12px;font-size:13px;color:var(--text-2);text-align:center}
.form__ok{margin-top:14px;font-size:13px;color:var(--brand-700);display:none}
.form__ok.is-visible{display:block}

/* ---------- 页脚 ---------- */
.site-footer{background:#0A2743;color:#A9C1DA;font-size:14px}
.footer__grid{display:grid;gap:32px;padding:56px 0 40px;grid-template-columns:1fr}
@media(min-width:768px){.footer__grid{grid-template-columns:repeat(2,1fr);gap:36px}}
@media(min-width:1024px){.footer__grid{grid-template-columns:2fr 1fr 1fr 1.3fr;gap:40px;padding:72px 0 48px}}
.footer__brand .brand-text b{color:#fff}
.footer__brand .brand-text span{color:#8FADC9}
.footer__brand p{margin-top:18px;line-height:1.9;max-width:34em}
.footer__brand .footer__domain{margin-top:14px;color:#7FA0BF;font-size:13px}
.footer__col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.footer__col a,.footer__col p{display:block;color:#A9C1DA;line-height:2.2;font-size:14px;transition:color .2s ease}
.footer__col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer__bottom{
  border-top:1px solid rgba(169,193,218,.2);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;font-size:13px;color:#8FADC9;
}
.footer__bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --brand-900:#0B2E52;
  --brand-700:#16528F;
  --brand-600:#1E63B0;
  --brand-100:#E6EFFA;
  --brand-50:#F3F7FC;
  --accent:#F26430;
  --accent-dark:#D9501F;
  --ink:#1B2430;
  --muted:#5A6675;
  --line:#E3E9F2;
  --line-strong:#CFDCEB;
  --page:#F7F9FC;
  --card:#FFFFFF;
  --input:#FBFCFE;
  --radius-lg:16px;
  --radius-md:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(16,42,73,.05),0 8px 24px rgba(16,42,73,.06);
  --shadow-2:0 4px 12px rgba(16,42,73,.08),0 16px 32px rgba(16,42,73,.09);
  --shadow-3:0 6px 16px rgba(22,99,176,.25);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:220ms;
  --font:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
}

/* ============ 基础 reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--page);color:var(--ink);
  font-family:var(--font);font-size:16px;line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--t) var(--ease)}
button,input,textarea{font-family:inherit;font-size:inherit}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}

/* ============ 容器 ============ */
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.wrap{padding:0 32px}}
.section{padding:48px 0}
@media (min-width:768px){.section{padding:64px 0}}
@media (min-width:1024px){.section{padding:96px 0}}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--brand-900);color:#C6DAF0;font-size:13px;line-height:1.4}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;min-height:36px;gap:16px}
.topbar__tip{margin:0;display:flex;align-items:center;gap:8px;min-height:36px}
.topbar__tip .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none}
.topbar__links{display:none;gap:20px;align-items:center}
.topbar__links a{color:#C6DAF0}
.topbar__links a:hover{color:#FFFFFF}
@media (min-width:768px){.topbar__links{display:flex}}

/* ============ 主导航 ============ */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow var(--t) var(--ease)}
.site-header.is-stuck{box-shadow:0 8px 24px rgba(16,42,73,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;transition:height var(--t) var(--ease)}
.site-header.is-stuck .nav{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;flex:none;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-600));
  color:#fff;font-weight:700;font-size:18px;letter-spacing:0}
.brand-text{display:flex;flex-direction:column;line-height:1.18}
.brand-text b{font-size:16px;font-weight:700;color:var(--ink)}
.brand-text span{font-size:12px;letter-spacing:.12em;color:var(--muted)}
.menu{display:none;align-items:center;gap:30px}
@media (min-width:1024px){.menu{display:flex}}
.menu a{position:relative;font-size:15px;font-weight:500;color:var(--muted);padding:6px 0}
.menu a:hover{color:var(--brand-700)}
.menu a.active{color:var(--brand-700);font-weight:600}
.menu a.active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--accent)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:44px;height:44px;
  border:1px solid var(--line);background:#fff;border-radius:var(--radius-btn);cursor:pointer;padding:0 12px}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--brand-700)}
.nav-toggle:hover{border-color:var(--line-strong);background:var(--brand-50)}
@media (min-width:1024px){.nav-toggle{display:none}}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;
  border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease)}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-3)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-1px)}
.btn-primary:active{background:#134877;transform:translateY(0)}
.btn-outline{background:#fff;color:var(--brand-700);border-color:var(--line-strong)}
.btn-outline:hover{background:var(--brand-50);border-color:var(--brand-600)}
.btn-outline:active{background:var(--brand-100)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-1px)}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand-700);font-weight:600;font-size:15px}
.link-arrow:hover{text-decoration:underline;text-underline-offset:3px}
.link-arrow::after{content:"›";font-size:18px;line-height:1;transform:translateY(-1px)}
.link-arrow:hover::after{transform:translate(3px,-1px)}

/* ============ 面包屑 ============ */
.crumb{padding:16px 0 0;font-size:14px;color:var(--muted)}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumb li{display:flex;align-items:center;gap:8px}
.crumb a{color:var(--brand-700)}
.crumb a:hover{text-decoration:underline;text-underline-offset:3px}
.crumb li+li::before{content:"/";color:#A9B6C7}
.crumb li[aria-current]{color:var(--muted)}

/* ============ 分类 Hero ============ */
.hero-cat{padding:24px 0 40px}
@media (min-width:1024px){.hero-cat{padding:32px 0 64px}}
.hero-cat__grid{display:grid;gap:32px;align-items:center}
@media (min-width:1024px){.hero-cat__grid{grid-template-columns:7fr 5fr;gap:48px}}
.hero-cat__media{position:relative}
.hero-cat__media img{width:100%;height:240px;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow-1)}
@media (min-width:768px){.hero-cat__media img{height:300px}}
.hero-cat__media::after{content:"";position:absolute;right:-14px;bottom:-14px;width:96px;height:96px;border-radius:20px;
  background:var(--brand-100);z-index:-1}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-700);font-size:13px;font-weight:600;letter-spacing:.02em}
.badge-accent{background:#FDECE4;color:var(--accent-dark)}
.h1{font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.5px;margin:16px 0 14px;color:var(--ink)}
@media (min-width:768px){.h1{font-size:36px}}
@media (min-width:1024px){.h1{font-size:42px}}
.lead{font-size:16px;color:var(--muted);line-height:1.85;margin:0 0 26px;max-width:64ch}
.hero-cat__actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 通用板块标题 ============ */
.sec-head{max-width:760px;margin:0 0 32px}
@media (min-width:1024px){.sec-head{margin:0 0 40px}}
.sec-head .kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.08em}
.sec-head .kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent)}
.h2{font-size:24px;line-height:1.35;font-weight:600;letter-spacing:-.2px;margin:12px 0 10px}
@media (min-width:768px){.h2{font-size:28px}}
.sec-head p{margin:0;color:var(--muted);font-size:16px}

/* ============ 图文交替 ============ */
.rows{display:grid;gap:40px}
@media (min-width:1024px){.rows{gap:72px}}
.row{display:grid;gap:24px;align-items:center}
@media (min-width:1024px){
  .row{grid-template-columns:5fr 7fr;gap:48px}
  .row--flip .row__media{order:2}
  .row__media{order:1}
}
.row__media img{width:100%;height:220px;object-fit:cover;border-radius:var(--radius-md);box-shadow:var(--shadow-1);
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease)}
@media (min-width:768px){.row__media img{height:280px}}
.row__media img:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.h3{font-size:20px;font-weight:600;line-height:1.45;margin:12px 0 10px}
.row__text p{color:var(--muted);margin-bottom:14px}
.ticks li{position:relative;padding-left:22px;color:var(--muted);font-size:15px;margin-bottom:8px}
.ticks li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:8px;border-radius:50%;
  background:var(--brand-600);opacity:.85}

/* ============ 特点卡 ============ */
.features{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.feature{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:26px 24px;box-shadow:var(--shadow-1);height:100%;
  transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease),border-color var(--t) var(--ease)}
.feature:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line-strong)}
.feature__num{font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--accent)}
.feature__icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;margin:14px 0 14px;
  background:var(--brand-50);color:var(--brand-700);font-size:18px}
.feature h3{font-size:18px;font-weight:600;margin:0 0 8px}
.feature p{margin:0;color:var(--muted);font-size:15px;line-height:1.8}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:flex;align-items:flex-start;justify-content:space-between;
  gap:18px;padding:20px 0;font-size:17px;font-weight:600;color:var(--ink);transition:color var(--t) var(--ease)}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--brand-700)}
.faq summary::after{content:"+";flex:none;color:var(--brand-700);font-size:22px;line-height:1;font-weight:400;
  transition:transform var(--t) var(--ease)}
.faq details[open] summary{color:var(--brand-700)}
.faq details[open] summary::after{content:"−"}
.faq__body{padding:0 0 20px;color:var(--muted);font-size:15px;line-height:1.85;max-width:74ch}

/* ============ CTA 通栏 ============ */
.cta-band{background:var(--brand-900);color:#fff;border-radius:var(--radius-lg);padding:32px 24px}
@media (min-width:768px){.cta-band{padding:44px 40px}}
.cta-band__grid{display:grid;gap:24px;align-items:center}
@media (min-width:1024px){.cta-band__grid{grid-template-columns:1fr auto}}
.cta-band h2{font-size:22px;font-weight:600;margin:0 0 10px;color:#fff;line-height:1.4}
@media (min-width:768px){.cta-band h2{font-size:26px}}
.cta-band p{margin:0;color:#B9CFE7;font-size:15px;max-width:62ch}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:#B9CFE7;margin-top:48px;padding:56px 0 0;font-size:14px}
@media (min-width:1024px){.site-footer{margin-top:88px;padding:72px 0 0}}
.footer__grid{display:grid;gap:32px;padding-bottom:36px}
@media (min-width:768px){.footer__grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer__grid{grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px}}
.footer__brand .brand-mark{background:rgba(255,255,255,.12)}
.footer__brand .brand-text b{color:#fff}
.footer__brand .brand-text span{color:#8FB0D2}
.footer__brand p{margin:16px 0 0;line-height:1.8;color:#A9C4E0;max-width:44ch}
.footer__domain{color:#8FB0D2;font-size:13px}
.footer__col h4{font-size:15px;font-weight:600;color:#fff;margin:0 0 14px}
.footer__col a,.footer__col p{display:block;color:#A9C4E0;line-height:2.2;margin:0}
.footer__col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer__bottom{border-top:1px solid rgba(255,255,255,.13);padding:18px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;color:#8FB0D2;font-size:13px}
.footer__bottom p{margin:0}
.footer__bottom a{color:#C6DAF0}
.footer__bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}

/* ============ 移动端抽屉 ============ */
.drawer-mask{position:fixed;inset:0;background:rgba(11,46,82,.45);opacity:0;visibility:hidden;
  transition:opacity var(--t) var(--ease),visibility var(--t);z-index:55}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;height:100%;width:min(330px,88vw);background:#fff;z-index:60;
  transform:translateX(105%);transition:transform 260ms var(--ease);padding:22px;overflow-y:auto;
  box-shadow:-14px 0 34px rgba(16,42,73,.14)}
.drawer.open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.drawer__close{width:40px;height:40px;border-radius:var(--radius-btn);border:1px solid var(--line);
  background:#fff;color:var(--brand-700);font-size:20px;line-height:1;cursor:pointer}
.drawer__close:hover{background:var(--brand-50);border-color:var(--line-strong)}
.drawer__nav{display:grid;gap:2px;margin:14px 0 20px}
.drawer__nav a{padding:12px 12px;border-radius:10px;font-size:15px;font-weight:500;color:var(--muted)}
.drawer__nav a:hover{background:var(--brand-50);color:var(--brand-700)}
.drawer__nav a.active{background:var(--brand-100);color:var(--brand-700);font-weight:600}
.drawer__note{background:var(--brand-50);border:1px solid var(--line);border-radius:var(--radius-md);padding:14px 16px;
  font-size:13px;color:var(--muted);line-height:1.8}
.drawer__cta{display:grid;gap:10px;margin-top:16px}

/* roulang page: article */
:root{
  --brand-700:#16528F;
  --brand-900:#0B2E52;
  --brand-600:#1E63B0;
  --brand-100:#E6EFFA;
  --brand-50:#F3F7FC;
  --accent:#F26430;
  --page:#F7F9FC;
  --card:#FFFFFF;
  --text:#1B2430;
  --muted:#5A6675;
  --line:#E3E9F2;
  --line-strong:#CFDCEB;
  --input:#FBFCFE;
  --r-lg:16px;
  --r-md:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh1:0 1px 2px rgba(16,42,73,.05),0 8px 24px rgba(16,42,73,.06);
  --sh2:0 4px 12px rgba(16,42,73,.08),0 16px 32px rgba(16,42,73,.09);
  --sh3:0 6px 16px rgba(22,99,176,.25);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--page);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:600;color:var(--brand-900)}
p{margin:0}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(16,42,73,.08)}
.nav{display:flex;align-items:center;gap:22px;height:72px;transition:height .22s ease}
.site-header.is-scrolled .nav{height:60px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--brand-700),var(--brand-600));
  color:#fff;display:grid;place-items:center;font-size:18px;font-weight:700;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:17px;font-weight:700;color:var(--brand-900);letter-spacing:.2px}
.brand-text span{font-size:12px;letter-spacing:.16em;color:var(--muted)}
.menu{display:flex;align-items:center;gap:28px;margin-left:auto}
.menu a{position:relative;font-size:15px;font-weight:500;padding:6px 0;color:var(--text);transition:color .2s ease}
.menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--brand-700);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.menu a:hover{color:var(--brand-700)}
.menu a:hover::after,.menu a.active::after{transform:scaleX(1)}
.menu a.active{color:var(--brand-700)}
.nav-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
  transition:border-color .2s ease,background-color .2s ease;
}
.nav-toggle:hover{border-color:var(--line-strong);background:var(--brand-50)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand-900)}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(11,46,82,.42);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:308px;max-width:86vw;background:#fff;z-index:80;
  transform:translateX(102%);transition:transform .26s ease;
  padding:20px;display:flex;flex-direction:column;gap:6px;
  box-shadow:-16px 0 40px rgba(16,42,73,.14);overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:18px;
}
.drawer-close:hover{background:var(--brand-50)}
.drawer-link{
  display:block;padding:13px 12px;border-radius:10px;font-size:15px;font-weight:500;color:var(--text);
  border-bottom:1px solid var(--line);transition:background-color .2s ease,color .2s ease;
}
.drawer-link:last-of-type{border-bottom:0}
.drawer-link:hover{background:var(--brand-50);color:var(--brand-700)}
.drawer-link.active{color:var(--brand-700);background:var(--brand-100)}
.drawer-cta{margin-top:18px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .2s ease,background-color .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--sh3)}
.btn-primary:hover{background:var(--brand-600);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0);background:#134a80}
.btn-ghost{background:#fff;border-color:var(--line-strong);color:var(--brand-700)}
.btn-ghost:hover{background:var(--brand-100)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#d9531f;transform:translateY(-1px)}
.btn-accent:active{transform:translateY(0)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.link-arrow{color:var(--brand-700);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.link-arrow:hover{text-decoration:underline;text-underline-offset:3px}
.link-arrow:hover .arw{transform:translateX(4px)}
.arw{transition:transform .2s ease}

/* ---------- page ---------- */
.page-main{padding-bottom:96px}
.article-band{
  background:linear-gradient(180deg,var(--brand-50),#fff);
  border-bottom:1px solid var(--line);padding:18px 0;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--muted)}
.crumb a{color:var(--brand-700)}
.crumb a:hover{text-decoration:underline;text-underline-offset:3px}
.crumb-sep{color:#B9C6D6}
.crumb-current{color:var(--muted);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-layout{
  display:grid;grid-template-columns:210px minmax(0,1fr);
  gap:48px;align-items:start;padding-top:44px;
}
.article-aside{position:sticky;top:104px;display:flex;flex-direction:column;gap:16px}
.aside-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px;box-shadow:var(--sh1);
}
.aside-card h3{font-size:15px;margin-bottom:10px}
.aside-card a{
  display:block;font-size:14px;color:var(--muted);padding:7px 0;
  border-bottom:1px dashed var(--line);transition:color .2s ease,padding-left .2s ease;
}
.aside-card a:last-child{border-bottom:0}
.aside-card a:hover{color:var(--brand-700);padding-left:4px}
.aside-card--accent{background:var(--brand-50);border-color:var(--brand-100)}
.aside-card--accent p{font-size:13px;color:var(--muted);margin:6px 0 12px;line-height:1.8}

.article-main{max-width:820px;min-width:0}
.article-head h1{
  font-size:34px;line-height:1.3;font-weight:700;letter-spacing:-.5px;
  margin:16px 0 18px;color:var(--brand-900);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-700);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.badge-accent{background:#FDECE5;color:#C64615}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:14px;color:var(--muted)}
.dot{width:4px;height:4px;border-radius:50%;background:#C4D0DE;display:inline-block}
.article-head hr{border:0;border-top:1px solid var(--line);margin:22px 0 0}

/* ---------- article body ---------- */
.article-body{font-size:17px;line-height:1.9;color:#243244;padding-top:28px}
.article-body > * + *{margin-top:1em}
.article-body p{margin:0 0 1em}
.article-body h2{
  position:relative;font-size:25px;line-height:1.4;font-weight:600;color:var(--brand-900);
  padding-left:14px;margin:40px 0 14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:2px;background:var(--accent);
}
.article-body h3{font-size:20px;font-weight:600;color:var(--brand-900);margin:28px 0 10px}
.article-body h4{font-size:17px;font-weight:600;color:var(--brand-700);margin:22px 0 8px}
.article-body ul,.article-body ol{margin:0 0 1em;padding-left:24px}
.article-body li{margin:6px 0}
.article-body ul li::marker{color:var(--brand-700)}
.article-body ol li::marker{color:var(--brand-700);font-weight:600}
.article-body blockquote{
  margin:24px 0;padding:18px 20px;background:var(--brand-50);
  border-left:4px solid var(--brand-700);border-radius:0 var(--r-md) var(--r-md) 0;
  font-size:16px;color:#33445A;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:24px auto;height:auto}
.article-body table{
  display:block;width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;
  border-collapse:collapse;margin:24px 0;font-size:15px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-md);
}
.article-body th{background:var(--brand-100);color:var(--brand-900);font-weight:600;text-align:left}
.article-body th,.article-body td{padding:12px;border-bottom:1px solid var(--line);white-space:nowrap}
.article-body tr:last-child td{border-bottom:0}
.article-body a{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px}
.article-body strong{color:var(--brand-900)}

.empty-state{
  text-align:center;padding:56px 24px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh1);
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 16px;border-radius:50%;
  background:var(--brand-100);color:var(--brand-700);display:grid;place-items:center;font-size:24px;font-weight:700;
}
.empty-state h3{font-size:20px;margin-bottom:8px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:20px}

.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;align-items:center}
.tag-row .tag-label{font-size:14px;color:var(--muted);margin-right:2px}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:var(--brand-50);border:1px solid var(--line);color:#41536A;font-size:13px;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.tag:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-100)}

.pager{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px}
.pager-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 20px;box-shadow:var(--sh1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.pager-card:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:var(--line-strong)}
.pager-card span{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.pager-card b{display:block;font-size:15px;font-weight:600;color:var(--brand-900);line-height:1.6}
.pager-card--next{text-align:right}

/* ---------- sections ---------- */
.section{margin-top:72px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.sec-head h2{font-size:26px;font-weight:600;letter-spacing:-.3px}
.sec-head p{font-size:14px;color:var(--muted);margin-top:6px}

.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh2);border-color:var(--line-strong)}
.card-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EDF2F8}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease-out}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;line-height:1.55;font-weight:600;color:var(--brand-900)}
.card-body p{font-size:14px;color:var(--muted);line-height:1.8}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:#8494A6}

.faq-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 4px;font-size:16px;font-weight:600;color:var(--brand-900);
  transition:color .2s ease,background-color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-700);background:var(--brand-50)}
.faq-item[open] summary{color:var(--brand-700)}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand-700);border-radius:2px;transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-body{padding:0 4px 22px;font-size:15px;color:var(--muted);line-height:1.9;max-width:760px;animation:fadeIn .2s ease-out}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
.faq-wrap{max-width:820px}

.cta-band{
  margin-top:72px;background:var(--brand-900);border-radius:var(--r-lg);
  padding:38px 40px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  color:#fff;box-shadow:var(--sh2);
}
.cta-band h2{color:#fff;font-size:24px;font-weight:600}
.cta-band p{color:rgba(255,255,255,.74);font-size:15px;margin-top:8px;max-width:56ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.76);padding-top:64px}
.footer__grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.25fr;gap:32px;padding-bottom:44px}
.site-footer .brand-text b{color:#fff}
.site-footer .brand-text span{color:rgba(255,255,255,.58)}
.footer__brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.72);margin-top:14px}
.footer__domain{color:rgba(255,255,255,.55)!important;font-size:13px!important}
.footer__col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:14px}
.footer__col a{display:block;font-size:14px;line-height:2.2;color:rgba(255,255,255,.75);transition:color .2s ease}
.footer__col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer__col p{font-size:14px;line-height:2.2;color:rgba(255,255,255,.72)}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:18px 0 26px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(255,255,255,.6);
}
.footer__bottom a{color:rgba(255,255,255,.8)}
.footer__bottom a:hover{color:#fff;text-decoration:underline}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .menu{display:none}
  .nav-toggle{display:flex}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;padding-top:32px}
  .article-aside{position:static;flex-direction:row;flex-wrap:wrap}
  .aside-card{flex:1 1 260px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px}
  .article-head h1{font-size:30px}
}
@media (max-width:767px){
  body{font-size:16px}
  .wrap{padding:0 20px}
  .nav{height:64px;gap:12px}
  .site-header.is-scrolled .nav{height:58px}
  .brand-mark{width:34px;height:34px;font-size:16px;border-radius:9px}
  .brand-text b{font-size:16px}
  .brand-text span{font-size:11px;letter-spacing:.1em}
  .page-main{padding-bottom:64px}
  .article-head h1{font-size:25px;letter-spacing:-.2px}
  .article-body{font-size:16px}
  .article-body h2{font-size:21px}
  .article-body h3{font-size:18px}
  .article-aside{flex-direction:column}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .pager{grid-template-columns:minmax(0,1fr)}
  .pager-card--next{text-align:left}
  .section{margin-top:52px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:8px;margin-bottom:20px}
  .sec-head h2{font-size:22px}
  .cta-band{padding:26px 22px;flex-direction:column;align-items:flex-start}
  .cta-band h2{font-size:20px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 auto}
  .footer__grid{grid-template-columns:minmax(0,1fr);gap:24px}
  .footer__bottom{flex-direction:column}
  .article-band{padding:14px 0}
  .crumb-current{white-space:normal;max-width:100%}
}
@media (max-width:520px){
  .article-head h1{font-size:22px}
  .badge{height:26px;font-size:11px}
  .btn{height:46px}
}

/* roulang page: category2 */
:root{
  --brand-900:#0B2E52;
  --brand-700:#16528F;
  --brand-600:#1E63B0;
  --brand-100:#E6EFFA;
  --brand-50:#F3F7FC;
  --accent:#F26430;
  --accent-dark:#D9531F;
  --page:#F7F9FC;
  --card:#FFFFFF;
  --text:#1B2430;
  --muted:#5A6675;
  --line:#E3E9F2;
  --line-strong:#CFDCEB;
  --input:#FBFCFE;
  --radius-lg:16px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(16,42,73,.05),0 8px 24px rgba(16,42,73,.06);
  --shadow-2:0 4px 12px rgba(16,42,73,.08),0 16px 32px rgba(16,42,73,.09);
  --shadow-3:0 6px 16px rgba(22,99,176,.25);
  --wrap:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",sans-serif;
  font-size:16px;line-height:1.85;color:var(--text);background:var(--page);
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block;height:auto;background:#EEF2F7}
a{color:var(--brand-700);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
button{font:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
@media(min-width:768px){.wrap{padding:0 32px}}

/* 顶部信息条 */
.topbar{background:var(--brand-900);color:#CFE0F2;font-size:13px;height:36px;display:flex;align-items:center}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar__hint{margin:0;display:flex;align-items:center;gap:8px;min-width:0;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.topbar__dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none}
.topbar__links{display:flex;gap:22px;flex:none}
.topbar__links a{color:#CFE0F2;font-size:13px}
.topbar__links a:hover{color:var(--accent);text-decoration:none}
@media(max-width:767px){.topbar__links{display:none}}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out}
.site-header.is-scrolled{box-shadow:0 4px 16px rgba(16,42,73,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height .2s ease-out}
.site-header.is-scrolled .nav{height:60px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text)}
.brand:hover{color:var(--text);text-decoration:none}
.brand-mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--brand-700),var(--brand-600));color:#fff;display:grid;place-items:center;font-weight:700;font-size:18px;flex:none;box-shadow:var(--shadow-3)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text b{font-size:17px;font-weight:700;letter-spacing:.2px}
.brand-text span{font-size:12px;letter-spacing:1.4px;color:var(--muted)}
.menu{display:flex;align-items:center;gap:30px}
.menu a{position:relative;color:#2C3A4B;font-size:15px;font-weight:500;padding:6px 0}
.menu a:hover{color:var(--brand-700);text-decoration:none}
.menu a.active{color:var(--brand-700)}
.menu a.active::after{content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;border-radius:2px;background:var(--brand-700)}
.nav-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:5px;transition:background-color .2s,border-color .2s}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-900);border-radius:2px}
.nav-toggle:hover{background:var(--brand-50);border-color:var(--line-strong)}
@media(max-width:1023px){
  .menu{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn-sm{display:none}
}

/* 移动端抽屉 */
.drawer{position:fixed;inset:0;z-index:80;display:none}
.drawer.is-open{display:block}
.drawer__overlay{position:absolute;inset:0;background:rgba(11,46,82,.44)}
.drawer__panel{position:absolute;top:0;right:0;height:100%;width:84%;max-width:340px;background:#fff;padding:22px 20px 28px;display:flex;flex-direction:column;gap:16px;box-shadow:-8px 0 32px rgba(16,42,73,.18);overflow-y:auto}
.drawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.drawer__title{font-size:15px;font-weight:700;color:var(--brand-900)}
.drawer__close{width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;color:var(--brand-900);font-size:20px;line-height:1;cursor:pointer}
.drawer__close:hover{background:var(--brand-50)}
.drawer__tip{font-size:13px;color:var(--muted);background:var(--brand-50);border:1px solid var(--line);border-radius:var(--radius-sm);padding:10px 12px;margin:0}
.drawer__menu{display:flex;flex-direction:column}
.drawer__menu a{padding:14px 4px;border-bottom:1px solid var(--line);color:#2C3A4B;font-size:15.5px;font-weight:500}
.drawer__menu a:hover{color:var(--brand-700);text-decoration:none}
.drawer__menu a.active{color:var(--brand-700)}
.drawer__cta{width:100%}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:background-color .2s ease-out,color .2s ease-out,box-shadow .2s ease-out,transform .2s ease-out,border-color .2s ease-out}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--brand-700);color:#fff;box-shadow:var(--shadow-3)}
.btn-primary:hover{background:var(--brand-600);color:#fff}
.btn-primary:active{background:#12456F}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(242,100,48,.28)}
.btn-accent:hover{background:var(--accent-dark);color:#fff}
.btn-outline-light{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.btn-outline-light:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* 面包屑 */
.crumb{display:flex;align-items:center;gap:8px;padding-top:18px;padding-bottom:6px;font-size:14px;color:var(--muted);flex-wrap:wrap}
.crumb a{color:var(--brand-700)}
.crumb span.sep{color:#A9B6C6}
.crumb__current{color:var(--muted)}

/* 分类 Hero（居中窄栏） */
.hero-narrow{position:relative;background:linear-gradient(180deg,#FFFFFF 0%,var(--brand-50) 100%);border-bottom:1px solid var(--line);overflow:hidden}
.hero-narrow::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--brand-700),var(--accent) 58%,var(--brand-600))}
.hero-narrow::after{content:"";position:absolute;right:-100px;top:-80px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(22,82,143,.10),rgba(22,82,143,0) 70%)}
.hero-narrow__inner{position:relative;z-index:1;max-width:860px;margin:0 auto;padding:66px 20px 60px;text-align:center}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-700);background:var(--brand-100);border-radius:999px;padding:6px 14px;letter-spacing:.4px;margin-bottom:20px}
.kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.hero-narrow h1{font-size:44px;line-height:1.28;font-weight:700;letter-spacing:-.5px;color:var(--brand-900);margin-bottom:18px}
.hero-narrow__lead{font-size:17px;color:var(--muted);max-width:680px;margin:0 auto}
.hero-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px 28px;margin-top:28px}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-700)}
.text-link::after{content:"→";transition:transform .2s ease-out}
.text-link:hover{text-decoration:none;color:var(--brand-600)}
.text-link:hover::after{transform:translateX(4px)}
.hero-meta{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 22px;margin-top:28px;font-size:13.5px;color:var(--muted)}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta span::before{content:"";width:6px;height:6px;border-radius:2px;background:var(--brand-600);opacity:.7}

/* 板块 */
.section{padding:88px 0}
.section--soft{background:linear-gradient(180deg,#FFFFFF 0%,var(--brand-50) 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:780px;margin:0 auto 44px;text-align:center}
.section-head::before{content:"";display:block;width:44px;height:3px;border-radius:2px;background:var(--accent);margin:0 auto 18px}
.section-head h2{font-size:29px;font-weight:600;line-height:1.35;letter-spacing:-.3px;color:var(--brand-900);margin-bottom:12px}
.section-head p{color:var(--muted);font-size:16px}
@media(max-width:767px){
  .section{padding:48px 0}
  .hero-narrow h1{font-size:32px}
  .hero-narrow__inner{padding:44px 20px 40px}
  .section-head h2{font-size:23px}
}
@media(min-width:768px) and (max-width:1023px){
  .section{padding:64px 0}
  .hero-narrow h1{font-size:40px}
  .hero-narrow__inner{padding:56px 32px 52px}
}

/* 步骤时间轴 */
.steps{list-style:none;padding:0;margin:0;max-width:900px;margin-left:auto;margin-right:auto}
.step{position:relative;display:grid;grid-template-columns:64px 1fr;gap:22px;padding-bottom:34px}
.step:last-child{padding-bottom:0}
.step::before{content:"";position:absolute;left:26px;top:58px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--brand-100),rgba(230,239,250,.15))}
.step:last-child::before{display:none}
.step__no{position:relative;z-index:1;width:54px;height:54px;border-radius:50%;background:#fff;border:1px solid var(--line);color:var(--brand-700);font-weight:700;font-size:16px;display:grid;place-items:center;box-shadow:var(--shadow-1);transition:background-color .2s,color .2s,border-color .2s}
.step:hover .step__no{background:var(--brand-700);color:#fff;border-color:var(--brand-700)}
.step__body{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px 24px;box-shadow:var(--shadow-1);transition:box-shadow .2s ease-out,transform .2s ease-out,border-color .2s}
.step:hover .step__body{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--line-strong)}
.step__body h3{font-size:19px;font-weight:600;color:var(--brand-900);margin-bottom:8px;line-height:1.4}
.step__body p{font-size:15.5px;color:var(--muted)}
@media(max-width:640px){
  .step{grid-template-columns:44px 1fr;gap:14px}
  .step__no{width:40px;height:40px;font-size:14px}
  .step::before{left:19px;top:44px}
  .step__body{padding:18px}
}

/* 信息卡网格 */
.info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
@media(max-width:767px){.info-grid{grid-template-columns:1fr;gap:18px}}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-1);transition:box-shadow .22s ease-out,transform .22s ease-out,border-color .22s}
.info-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--line-strong)}
.info-card__media{aspect-ratio:16/9;overflow:hidden;background:#EEF2F7}
.info-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.info-card:hover .info-card__media img{transform:scale(1.03)}
.info-card__body{padding:24px 26px 26px}
.badge{display:inline-block;font-size:12px;font-weight:600;color:var(--brand-700);background:var(--brand-100);border-radius:999px;padding:4px 12px;margin-bottom:12px}
.info-card__body h3{font-size:20px;font-weight:600;color:var(--brand-900);line-height:1.4;margin-bottom:10px}
.info-card__body p{font-size:15px;color:var(--muted)}
.mini-list{list-style:none;padding:0;margin:14px 0 0;display:flex;flex-direction:column;gap:8px}
.mini-list li{position:relative;padding-left:18px;font-size:14.5px;color:#425061}
.mini-list li::before{content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;background:var(--brand-100);border:2px solid var(--brand-600)}

/* 对比清单 */
.compare-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow-1)}
.compare{min-width:660px}
.compare__row{display:grid;grid-template-columns:1.1fr 1.4fr 1.4fr;gap:20px;padding:18px 26px;border-bottom:1px solid var(--line);align-items:start}
.compare__row:last-child{border-bottom:none}
.compare__row--head{background:var(--brand-100);font-weight:600;color:var(--brand-900);font-size:15px;padding-top:16px;padding-bottom:16px}
.compare__row--head span:first-child{color:var(--brand-700)}
.compare__key{font-weight:600;color:var(--brand-900);font-size:15px}
.compare__cell{font-size:14.5px;color:var(--muted)}
.compare__row:not(.compare__row--head):hover{background:var(--brand-50)}
.compare__cell strong{color:var(--accent);font-weight:600}

/* FAQ */
.faq{max-width:860px;margin:0 auto}
.faq__item{border-bottom:1px solid var(--line)}
.faq__item:first-child{border-top:1px solid var(--line)}
.faq__item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 4px;cursor:pointer;list-style:none;font-size:17px;font-weight:600;color:var(--text);transition:color .2s,background-color .2s}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary:hover{color:var(--brand-700);background:var(--brand-50)}
.faq__item[open] summary{color:var(--brand-700)}
.faq__icon{position:relative;width:18px;height:18px;flex:none;color:currentColor}
.faq__icon::before,.faq__icon::after{content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;transform:translate(-50%,-50%)}
.faq__icon::before{width:14px;height:2px}
.faq__icon::after{width:2px;height:14px;transition:transform .2s ease-out}
.faq__item[open] .faq__icon::after{transform:translate(-50%,-50%) scaleY(0)}
.faq__body{padding:0 4px 22px;font-size:15px;color:var(--muted);animation:faqIn .2s ease-out}
@keyframes faqIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* CTA 通栏 */
.cta-band{position:relative;background:linear-gradient(135deg,var(--brand-900),var(--brand-700));color:#fff;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-60px;bottom:-120px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(242,100,48,.22),rgba(242,100,48,0) 68%)}
.cta-band__inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:56px 20px}
.cta-band h2{font-size:27px;font-weight:600;line-height:1.4;margin-bottom:10px;letter-spacing:-.3px}
.cta-band p{margin:0;color:#C8DAEE;font-size:15.5px;max-width:560px}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:14px;flex:none}
@media(min-width:768px){.cta-band__inner{padding-left:32px;padding-right:32px}}
@media(max-width:860px){
  .cta-band__inner{flex-direction:column;align-items:flex-start;padding:44px 20px}
  .cta-band h2{font-size:22px}
}

/* 页脚 */
.site-footer{background:#08243F;color:#B9CADD;font-size:14px}
.footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:36px;padding:64px 20px 40px}
.footer__brand .brand{margin-bottom:16px}
.footer__brand .brand-text b{color:#fff}
.footer__brand .brand-text span{color:#8FA9C4}
.footer__brand p{color:#B9CADD;font-size:14px;line-height:1.9;margin-bottom:12px}
.footer__domain{color:#8FA9C4;font-size:13px}
.footer__col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer__col a,.footer__col p{display:block;color:#B9CADD;font-size:14px;line-height:2.2}
.footer__col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}
.footer__bottom{display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;border-top:1px solid rgba(255,255,255,.12);padding-top:22px;padding-bottom:28px;color:#8FA9C4;font-size:13px}
.footer__bottom a{color:#8FA9C4}
.footer__bottom a:hover{color:#fff}
@media(min-width:768px){.footer__grid{padding-left:32px;padding-right:32px}.footer__bottom{padding-left:32px;padding-right:32px}}
@media(max-width:1023px){.footer__grid{grid-template-columns:1fr 1fr;gap:28px}}
@media(max-width:640px){.footer__grid{grid-template-columns:1fr;gap:26px;padding-top:44px}}