/* roulang page: index */
:root{
  --c-primary:#1A5FD0;
  --c-primary-700:#1348A6;
  --c-primary-050:#EAF1FD;
  --c-accent:#0FA98F;
  --c-accent-050:#E6F7F4;
  --c-warm:#F59E2C;
  --c-warm-050:#FEF3E0;
  --c-warm-ink:#8A5A05;
  --c-ink:#0E1B2E;
  --c-body:#47566B;
  --c-muted:#8494A8;
  --c-bg:#F6F9FD;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F2;
  --c-dark:#0C1B33;
  --c-error:#D64545;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,46,.05);
  --sh-2:0 6px 18px -6px rgba(14,27,46,.10);
  --sh-3:0 18px 40px -18px rgba(14,27,46,.18);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --ease:cubic-bezier(.4,0,.2,1);
  --sec-pad:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--c-primary);text-decoration:none;transition:color 180ms var(--ease);}
a:hover{color:var(--c-primary-700);}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;letter-spacing:-.2px;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit;}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
svg{flex:none;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-primary);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-sm) 0;z-index:999;}
.skip-link:focus{left:0;color:#fff;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;}

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

/* ---------- 顶部公告条 ---------- */
.notice-bar{background:var(--c-primary-050);border-bottom:1px solid var(--c-line);}
.notice-bar__inner{display:flex;align-items:center;gap:10px;height:36px;font-size:13px;color:var(--c-body);}
.notice-bar .dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 0 4px rgba(15,169,143,.14);flex:none;}
.notice-bar__text{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.notice-bar__link{margin-left:auto;font-size:13px;color:var(--c-primary);display:inline-flex;align-items:center;gap:4px;flex:none;}
.notice-bar__link:hover{gap:7px;}
.notice-bar__link:hover{color:var(--c-primary-700);}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow 180ms var(--ease),background 180ms var(--ease);
}
.site-header.is-stuck{box-shadow:var(--sh-3);}
.header__inner{display:flex;align-items:center;gap:24px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none;}
.logo__mark{width:34px;height:34px;border-radius:10px;background:var(--c-primary-050);border:1px solid rgba(26,95,208,.18);display:grid;place-items:center;}
.logo__text{font-size:15px;font-weight:700;color:var(--c-ink);letter-spacing:-.2px;white-space:nowrap;}
.logo:hover .logo__text{color:var(--c-primary);}
.nav{display:flex;align-items:center;gap:22px;margin-left:8px;}
.nav__link{position:relative;font-size:15px;font-weight:500;color:var(--c-body);padding:6px 2px;white-space:nowrap;}
.nav__link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--c-primary);border-radius:2px;transition:width 180ms var(--ease);}
.nav__link:hover{color:var(--c-primary);}
.nav__link:hover::after{width:60%;}
.nav__link.is-active{color:var(--c-primary);font-weight:600;}
.nav__link.is-active::after{width:60%;}
.header__actions{margin-left:auto;display:flex;align-items:center;gap:18px;flex:none;}
.header__contact{font-size:14px;color:var(--c-muted);}
.header__contact:hover{color:var(--c-primary);}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--c-line);border-radius:var(--r-sm);align-items:center;justify-content:center;color:var(--c-ink);}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;background:none;color:inherit;
  transition:background 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease),transform 180ms var(--ease);
  white-space:nowrap;
}
.btn svg{transition:transform 180ms var(--ease);}
.btn:hover svg{transform:translateX(3px);}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--c-primary-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);background:var(--c-primary-700);}
.btn--outline{background:var(--c-surface);border-color:var(--c-primary);color:var(--c-primary);}
.btn--outline:hover{background:rgba(26,95,208,.06);color:var(--c-primary-700);border-color:var(--c-primary-700);}
.btn--ghost{background:transparent;color:var(--c-primary);padding:0 4px;height:auto;font-weight:600;}
.btn--ghost:hover{color:var(--c-primary-700);}
.btn--sm{height:44px;padding:0 22px;border-radius:var(--r-pill);}
.btn--light{background:#fff;color:var(--c-primary);}
.btn--light:hover{background:#EDF3FE;color:var(--c-primary-700);transform:translateY(-1px);}
.btn--outline-light{background:transparent;border-color:rgba(255,255,255,.55);color:#fff;}
.btn--outline-light:hover{background:rgba(255,255,255,.10);color:#fff;border-color:#fff;}
.btn--block{width:100%;}
.btn[disabled],.btn.is-disabled{background:#EDF1F7;color:#A9B5C6;border-color:#EDF1F7;box-shadow:none;cursor:not-allowed;transform:none;}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1;letter-spacing:0;}
.badge--primary{background:var(--c-primary-050);color:var(--c-primary);}
.badge--accent{background:var(--c-accent-050);color:var(--c-accent);}
.badge--warm{background:var(--c-warm-050);color:var(--c-warm-ink);}
.tag{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:var(--r-pill);font-size:12px;background:var(--c-primary-050);color:var(--c-primary);font-weight:600;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);background:var(--c-surface);border:1px solid var(--c-line);font-size:13px;font-weight:600;color:var(--c-primary);}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--c-accent);display:block;}

/* ---------- 板块通用 ---------- */
.section{padding:var(--sec-pad) 0;}
.section--surface{background:var(--c-surface);}
.section--bg{background:var(--c-bg);}
.section__head{display:flex;align-items:flex-end;gap:20px;margin-bottom:40px;}
.section__title{position:relative;padding-left:16px;font-size:32px;line-height:1.3;font-weight:700;}
.section__title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--c-primary);}
.section__title::after{content:"";position:absolute;left:6px;top:-6px;width:6px;height:6px;border-radius:50%;background:var(--c-accent);}
.section__sub{margin-top:10px;padding-left:16px;font-size:14px;color:var(--c-muted);}
.section__rule{flex:1;height:1px;background:var(--c-line);margin-bottom:14px;}
.section__more{flex:none;font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;margin-bottom:12px;}
.section__more:hover{gap:9px;}

/* ---------- Hero ---------- */
.hero{background:var(--c-bg);padding:84px 0 76px;position:relative;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,rgba(26,95,208,.06) 1px,transparent 1px),linear-gradient(to bottom,rgba(26,95,208,.06) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 78% 30%,#000 0%,transparent 68%);
  -webkit-mask-image:radial-gradient(circle at 78% 30%,#000 0%,transparent 68%);
}
.hero__grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero__title{font-size:46px;line-height:1.22;font-weight:800;letter-spacing:-.5px;margin:20px 0 0;}
.hero__title em{font-style:normal;color:var(--c-primary);}
.hero__lead{margin-top:18px;font-size:16px;line-height:1.8;color:var(--c-body);max-width:520px;}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.trust-row{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:38px;padding-top:24px;border-top:1px solid var(--c-line);}
.trust-item{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--c-body);line-height:1.4;}
.trust-item svg{color:var(--c-accent);}
.hero__media{position:relative;}
.hero__figure{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-3);aspect-ratio:16/11;border:1px solid var(--c-line);background:#E8EFFA;}
.hero__figure img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease);}
.hero__figure:hover img{transform:scale(1.03);}
.hero__card{
  position:absolute;right:-14px;bottom:-26px;width:220px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--sh-2);padding:16px 18px;
}
.hero__card b{display:block;font-size:28px;line-height:1.1;color:var(--c-primary);font-weight:800;}
.hero__card span{display:block;margin-top:6px;font-size:12px;color:var(--c-muted);line-height:1.5;}

/* ---------- 三步上手 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;}
.steps::before{
  content:"";position:absolute;top:56px;left:8%;right:8%;height:1px;
  background-image:linear-gradient(to right,rgba(26,95,208,.35) 0 6px,transparent 6px 14px);
  background-size:14px 1px;background-repeat:repeat-x;
}
.step-card{position:relative;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--sh-1);padding:28px;transition:box-shadow 180ms var(--ease),transform 180ms var(--ease),border-color 180ms var(--ease);}
.step-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(26,95,208,.18);}
.step-card__num{width:56px;height:56px;border-radius:var(--r-md);background:rgba(26,95,208,.10);color:var(--c-primary);display:grid;place-items:center;font-size:24px;font-weight:800;letter-spacing:-1px;}
.step-card h3{margin-top:20px;font-size:20px;font-weight:600;}
.step-card p{margin-top:10px;font-size:14px;line-height:1.75;color:var(--c-body);}

/* ---------- 通道保障 ---------- */
.assure__grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.assure__figure{margin-top:26px;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);box-shadow:var(--sh-2);aspect-ratio:4/3;background:#E8EFFA;}
.assure__figure img{width:100%;height:100%;object-fit:cover;}
.assure__note{margin-top:22px;padding:16px 18px;background:var(--c-bg);border-left:3px solid var(--c-primary);border-radius:var(--r-sm);font-size:13px;line-height:1.7;color:var(--c-body);}
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.feature{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--sh-1);padding:24px;transition:box-shadow 180ms var(--ease),transform 180ms var(--ease),border-color 180ms var(--ease);}
.feature:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(26,95,208,.18);}
.feature__icon{width:40px;height:40px;border-radius:12px;background:var(--c-primary-050);color:var(--c-primary);display:grid;place-items:center;}
.feature h3{margin-top:16px;font-size:18px;font-weight:600;}
.feature p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--c-body);}

/* ---------- 案例证明 ---------- */
.cases__grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.cases__desc{margin-top:16px;font-size:15px;line-height:1.8;color:var(--c-body);max-width:380px;}
.stat-card{margin-top:26px;background:var(--c-dark);border-radius:var(--r-lg);padding:28px;color:#fff;box-shadow:var(--sh-3);position:relative;overflow:hidden;}
.stat-card::after{content:"";position:absolute;right:-60px;bottom:-70px;width:200px;height:200px;border:1px solid rgba(255,255,255,.12);border-radius:50%;}
.stat-card b{display:block;font-size:40px;line-height:1.05;font-weight:800;color:#fff;}
.stat-card span{display:block;margin-top:10px;font-size:13px;color:#9AA9BE;line-height:1.6;}
.stat-card .stat-card__row{display:flex;gap:28px;margin-top:24px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);}
.stat-card .stat-card__row div b{font-size:22px;}
.stat-card .stat-card__row div span{margin-top:4px;font-size:12px;}
.case-list{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--sh-1);overflow:hidden;}
.case-item{display:flex;align-items:center;gap:16px;padding:20px 24px;border-bottom:1px solid var(--c-line);transition:background 180ms var(--ease);}
.case-item:last-child{border-bottom:0;}
.case-item:hover{background:#FBFDFF;}
.case-item__avatar{width:48px;height:48px;border-radius:50%;background:var(--c-primary-050);color:var(--c-primary);display:grid;place-items:center;font-weight:700;font-size:16px;flex:none;}
.case-item__body{flex:1;min-width:0;}
.case-item__body strong{display:block;font-size:15px;color:var(--c-ink);font-weight:600;}
.case-item__body span{display:block;margin-top:4px;font-size:13px;color:var(--c-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.case-item__end{display:flex;align-items:center;gap:12px;flex:none;}
.case-item__arrow{color:var(--c-muted);transition:transform 180ms var(--ease),color 180ms var(--ease);}
.case-item:hover .case-item__arrow{transform:translateX(4px);color:var(--c-primary);}

/* ---------- 最新信息 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow 180ms var(--ease),transform 180ms var(--ease),border-color 180ms var(--ease);}
.news-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);border-color:rgba(26,95,208,.18);}
.news-card__cover{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:#E8EFFA;}
.news-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform 400ms var(--ease);}
.news-card:hover .news-card__cover img{transform:scale(1.03);}
.news-card__cover .badge{position:absolute;left:12px;top:12px;}
.news-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.news-card__title{font-size:16px;font-weight:600;line-height:1.45;color:var(--c-ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color 180ms var(--ease);}
.news-card:hover .news-card__title{color:var(--c-primary);}
.news-card__desc{margin-top:10px;font-size:14px;line-height:1.7;color:var(--c-body);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.news-card__foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-muted);}
.news-card__foot .more{color:var(--c-primary);font-weight:600;}
.news-empty{min-height:260px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:var(--c-surface);border:1px dashed var(--c-line);border-radius:var(--r-md);color:var(--c-muted);}
.news-empty__icon{width:48px;height:48px;color:#C3CEE0;}

/* ---------- FAQ ---------- */
.faq__grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq__aside p{margin-top:16px;font-size:15px;line-height:1.8;color:var(--c-body);max-width:320px;}
.faq__aside .btn{margin-top:24px;}
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-item{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--sh-1);overflow:hidden;position:relative;transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--c-primary);opacity:0;transition:opacity 180ms var(--ease);}
.faq-item.is-open::before{opacity:1;}
.faq-item.is-open{border-color:rgba(26,95,208,.22);box-shadow:var(--sh-2);}
.faq-item__btn{width:100%;min-height:56px;display:flex;align-items:center;gap:14px;padding:16px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--c-body);line-height:1.5;}
.faq-item__btn:hover{color:var(--c-primary);}
.faq-item.is-open .faq-item__btn{color:var(--c-ink);}
.faq-item__btn span{flex:1;}
.faq-item__icon{width:22px;height:22px;position:relative;flex:none;color:var(--c-primary);transition:transform 220ms var(--ease);}
.faq-item.is-open .faq-item__icon{transform:rotate(45deg);}
.faq-item__panel{max-height:0;overflow:hidden;transition:max-height 220ms var(--ease);}
.faq-item__panel p{padding:0 22px 18px 22px;font-size:14px;line-height:1.8;color:var(--c-body);}

/* ---------- CTA ---------- */
.cta__box{
  position:relative;background:var(--c-dark);border-radius:24px;padding:56px;overflow:hidden;
  display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;
}
.cta__box::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(to bottom,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:24px 24px;
  mask-image:radial-gradient(circle at 12% 20%,#000 0%,transparent 70%);
  -webkit-mask-image:radial-gradient(circle at 12% 20%,#000 0%,transparent 70%);
}
.cta__box h2{position:relative;color:#fff;font-size:32px;line-height:1.3;}
.cta__points{position:relative;margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.cta__points li{display:flex;align-items:center;gap:10px;font-size:15px;color:#D6DEEA;}
.cta__points svg{color:var(--c-accent);flex:none;}
.cta__actions{position:relative;display:flex;flex-direction:column;gap:12px;}
.cta__hint{margin-top:6px;font-size:13px;color:#9AA9BE;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:#9AA9BE;padding:64px 0 32px;margin-top:0;}
.footer__grid{display:grid;grid-template-columns:4fr 2fr 2fr 3fr;gap:36px;}
.footer__brand .logo__text{color:#fff;}
.footer__brand .logo__mark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);}
.footer__desc{margin-top:16px;font-size:13px;line-height:1.8;color:#9AA9BE;max-width:280px;}
.footer__contact{margin-top:18px;font-size:13px;line-height:2;color:#9AA9BE;}
.footer__contact a{color:#9AA9BE;}
.footer__contact a:hover{color:#fff;}
.footer__col h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer__col li{margin-bottom:10px;}
.footer__col a{font-size:13px;color:#9AA9BE;}
.footer__col a:hover{color:#fff;}
.footer__bottom{margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12px;color:#7B8AA0;}
.footer__bottom a{color:#7B8AA0;}
.footer__bottom a:hover{color:#fff;}

/* ---------- 移动抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:200;display:none;}
.drawer.is-open{display:block;}
.drawer__mask{position:absolute;inset:0;background:rgba(12,27,51,.45);animation:fadeIn 220ms var(--ease);}
.drawer__panel{position:absolute;left:0;right:0;top:0;background:var(--c-surface);border-radius:0 0 var(--r-lg) var(--r-lg);padding:0 0 20px;animation:slideDown 220ms var(--ease);max-height:100%;overflow-y:auto;}
.drawer__head{display:flex;align-items:center;justify-content:space-between;height:60px;padding:0 16px;border-bottom:1px solid var(--c-line);}
.drawer__close{width:40px;height:40px;border:1px solid var(--c-line);border-radius:var(--r-sm);display:grid;place-items:center;color:var(--c-ink);}
.drawer__close:hover{border-color:var(--c-primary);color:var(--c-primary);}
.drawer__list{padding:8px 16px 0;}
.drawer__list a{display:flex;align-items:center;height:52px;font-size:15px;color:var(--c-body);border-bottom:1px solid var(--c-line);padding-left:10px;position:relative;}
.drawer__list a.is-active{color:var(--c-primary);font-weight:600;}
.drawer__list a.is-active::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:2px;background:var(--c-primary);}
.drawer__foot{padding:20px 16px 0;}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideDown{from{transform:translateY(-12px);opacity:0}to{transform:translateY(0);opacity:1}}

/* ---------- 响应式 ---------- */
@media (min-width:1440px){
  .container{max-width:1280px;}
}
@media (max-width:1199px){
  :root{--sec-pad:72px;}
  .nav{gap:16px;}
  .nav__link{font-size:14px;}
  .hero__grid{grid-template-columns:6fr 6fr;gap:36px;}
  .hero__title{font-size:38px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .footer__grid{grid-template-columns:4fr 3fr 3fr 3fr;}
}
@media (max-width:991px){
  .nav,.header__contact{display:none;}
  .nav-toggle{display:inline-flex;}
  .header__inner{height:60px;gap:12px;}
  .logo__text{font-size:13px;}
  .section__title{font-size:26px;}
  .hero{padding:56px 0 64px;}
  .hero__grid{grid-template-columns:1fr;gap:40px;}
  .hero__title{font-size:32px;}
  .hero__card{display:none;}
  .assure__grid,.cases__grid,.faq__grid{grid-template-columns:1fr;gap:32px;}
  .cta__box{grid-template-columns:1fr;padding:36px;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px;}
  .notice-bar{display:none;}
}
@media (max-width:768px){
  :root{--sec-pad:56px;}
  .container{padding:0 16px;}
  .hero__title{font-size:30px;}
  .section__head{flex-wrap:wrap;gap:12px;margin-bottom:28px;}
  .section__rule{display:none;}
  .section__more{margin-bottom:0;}
  .steps{grid-template-columns:1fr;gap:16px;}
  .steps::before{display:none;}
  .step-card{display:grid;grid-template-columns:56px 1fr;gap:16px;padding:20px;background:var(--c-bg);border:0;box-shadow:none;}
  .step-card:hover{transform:none;box-shadow:none;}
  .step-card h3{margin-top:0;}
  .step-card p{grid-column:2;}
  .feature-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .trust-row{grid-template-columns:repeat(2,1fr);}
  .cta__box{border-radius:18px;padding:28px;}
  .cta__box h2{font-size:24px;}
  .case-item{padding:16px;}
  .case-item__body span{white-space:normal;}
  .footer__grid{grid-template-columns:1fr;}
  .footer__bottom{justify-content:flex-start;}
}
@media (max-width:520px){
  .hero__actions{flex-direction:column;align-items:stretch;}
  .hero__actions .btn{width:100%;}
  .cta__actions .btn{width:100%;}
  .faq-item__btn{font-size:15px;padding:14px 16px;}
  .faq-item__panel p{padding:0 16px 16px;}
  .section__title{font-size:24px;}
}

/* roulang page: article */
:root{
  --c-primary:#1A5FD0;
  --c-primary-700:#1348A6;
  --c-primary-050:#EAF1FD;
  --c-accent:#0FA98F;
  --c-accent-050:#E6F7F4;
  --c-warm:#F59E2C;
  --c-warm-050:#FEF4E5;
  --c-ink:#0E1B2E;
  --c-body:#47566B;
  --c-muted:#8494A8;
  --c-bg:#F6F9FD;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F2;
  --c-dark:#0C1B33;
  --c-danger:#D64545;
  --c-disabled-bg:#EDF1F7;
  --c-disabled-ink:#A9B5C6;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,46,.05);
  --sh-2:0 6px 18px -6px rgba(14,27,46,.10);
  --sh-3:0 18px 40px -18px rgba(14,27,46,.18);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-body);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);}
a:hover{color:var(--c-primary-700);}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;cursor:pointer;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .18s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-3);}
.header__inner{display:flex;align-items:center;height:72px;gap:24px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);flex-shrink:0;}
.logo__mark{
  width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-050);border:1px solid #D6E3F8;
}
.logo__text{font-size:15px;font-weight:700;letter-spacing:-.2px;white-space:nowrap;}
.nav{display:flex;align-items:center;gap:28px;margin-left:12px;}
.nav__link{
  position:relative;font-size:15px;font-weight:500;color:var(--c-body);
  padding:6px 0;white-space:nowrap;
}
.nav__link::after{
  content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;
  background:var(--c-primary);border-radius:2px;transition:width .18s var(--ease);
}
.nav__link:hover{color:var(--c-primary);}
.nav__link:hover::after{width:60%;}
.nav__link.is-active{color:var(--c-primary);font-weight:600;}
.nav__link.is-active::after{width:60%;}
.header__actions{display:flex;align-items:center;gap:18px;margin-left:auto;}
.header__contact{font-size:14px;color:var(--c-muted);}
.header__contact:hover{color:var(--c-primary);}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--c-line);
  background:var(--c-surface);border-radius:var(--r-sm);color:var(--c-ink);
  align-items:center;justify-content:center;margin-left:auto;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:all .18s var(--ease);cursor:pointer;text-align:center;
}
.btn--sm{height:44px;padding:0 22px;border-radius:var(--r-pill);font-size:14px;}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--c-primary-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary);}
.btn--ghost:hover{background:rgba(26,95,208,.06);color:var(--c-primary);}
.btn--ghostlight{background:transparent;color:#fff;border-color:rgba(255,255,255,.65);}
.btn--ghostlight:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn--light{background:#fff;color:var(--c-primary);}
.btn--light:hover{background:#EAF1FD;color:var(--c-primary-700);transform:translateY(-1px);}
.btn--link{height:auto;padding:0;border:0;background:none;color:var(--c-primary);font-weight:600;font-size:14px;}
.btn--link:hover{color:var(--c-primary-700);}
.btn--link svg{transition:transform .18s var(--ease);}
.btn--link:hover svg{transform:translateX(3px);}
.btn[disabled],.btn.is-disabled{background:var(--c-disabled-bg);color:var(--c-disabled-ink);border-color:transparent;box-shadow:none;cursor:not-allowed;transform:none;}

/* ---------- Breadcrumb ---------- */
.crumb-bar{background:var(--c-bg);border-bottom:1px solid var(--c-line);}
.crumb{display:flex;align-items:center;gap:8px;height:48px;font-size:13px;color:var(--c-muted);flex-wrap:nowrap;overflow:hidden;}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-primary);}
.crumb__sep{color:#C3CDDC;}
.crumb__now{color:var(--c-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:340px;}

/* ---------- Article head ---------- */
.article-head{padding:48px 0 0;background:var(--c-surface);}
.article-head__inner{max-width:800px;margin:0 auto;text-align:center;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1;
}
.badge--cat{background:var(--c-primary-050);color:var(--c-primary);}
.badge--ok{background:var(--c-accent-050);color:#0B8C77;}
.badge--warm{background:var(--c-warm-050);color:#B36B0B;}
.article-head h1{font-size:34px;font-weight:800;line-height:1.3;letter-spacing:-.4px;margin:16px 0 0;}
.article-meta{
  display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:10px;
  margin-top:18px;font-size:13px;color:var(--c-muted);
}
.article-meta .dot{color:#C3CDDC;}
.article-cover{margin:32px auto 0;max-width:920px;}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-2);}
.article-cover figcaption{text-align:center;font-size:12px;color:var(--c-muted);margin-top:10px;}

/* ---------- Reading layout ---------- */
.reading{padding:56px 0 88px;background:var(--c-surface);}
.reading__grid{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:start;}
.reading__main{max-width:760px;}

.article-body{font-size:17px;line-height:1.9;color:var(--c-body);}
.article-body > * + *{margin-top:1.1em;}
.article-body p{margin:0 0 1.1em;}
.article-body h2{
  font-size:24px;font-weight:700;color:var(--c-ink);
  margin:48px 0 16px;padding-left:12px;border-left:3px solid var(--c-primary);line-height:1.35;
}
.article-body h3{font-size:19px;font-weight:600;color:var(--c-ink);margin:32px 0 12px;}
.article-body h4{font-size:17px;font-weight:600;color:var(--c-ink);margin:24px 0 10px;}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:4px;}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:8px;line-height:1.9;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.78em;width:6px;height:6px;border-radius:50%;background:var(--c-primary);
}
.article-body ol{counter-reset:olc;padding-left:0;}
.article-body ol li{position:relative;padding-left:28px;margin-bottom:8px;counter-increment:olc;line-height:1.9;}
.article-body ol li::before{
  content:counter(olc);position:absolute;left:0;top:.42em;width:19px;height:19px;border-radius:6px;
  background:var(--c-primary-050);color:var(--c-primary);font-size:12px;font-weight:700;
  display:flex;align-items:center;justify-content:center;line-height:1;
}
.article-body blockquote{
  margin:28px 0;padding:20px 22px;background:#F2FBF9;border-left:3px solid var(--c-accent);
  border-radius:0 var(--r-md) var(--r-md) 0;font-size:15px;color:#33475C;line-height:1.85;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-md);margin:24px auto;}
.article-body figure{margin:24px 0;}
.article-body figure img{margin:0 auto;}
.article-body figcaption{text-align:center;font-size:12px;color:var(--c-muted);margin-top:10px;}
.article-body a{color:var(--c-primary);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;}
.article-body a:hover{color:var(--c-primary-700);text-decoration-thickness:2px;}
.article-body code{
  background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-sm);
  padding:2px 6px;font-size:14px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:#25405F;
}
.article-body pre{
  background:var(--c-bg);border:1px solid var(--c-line);border-radius:var(--r-sm);
  padding:16px;overflow-x:auto;
}
.article-body pre code{background:none;border:0;padding:0;}
.article-body .table-wrap{overflow-x:auto;margin:24px 0;border:1px solid var(--c-line);border-radius:var(--r-md);}
.article-body table{min-width:520px;font-size:15px;}
.article-body th{background:var(--c-bg);text-align:left;font-weight:600;color:var(--c-ink);}
.article-body th,.article-body td{padding:12px;border-bottom:1px solid var(--c-line);}
.article-body tr:last-child td{border-bottom:0;}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:36px 0;}

.empty-state{
  text-align:center;padding:64px 24px;border:1px solid var(--c-line);
  border-radius:var(--r-lg);background:var(--c-bg);
}
.empty-state svg{margin:0 auto 16px;}
.empty-state h2{font-size:20px;margin-bottom:8px;}
.empty-state p{font-size:14px;color:var(--c-muted);margin-bottom:20px;}

/* ---------- Sidebar ---------- */
.sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:24px;}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);padding:22px;
}
.side-card__title{
  font-size:15px;font-weight:700;color:var(--c-ink);margin-bottom:16px;
  display:flex;align-items:center;gap:8px;
}
.side-card__title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--c-primary);}
.side-list li + li{border-top:1px solid var(--c-line);}
.side-list a{display:flex;gap:12px;align-items:center;padding:12px 0;}
.side-list img{width:64px;height:48px;object-fit:cover;border-radius:var(--r-sm);flex-shrink:0;}
.side-list span{font-size:14px;line-height:1.5;color:var(--c-body);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.side-list a:hover span{color:var(--c-primary);}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--c-bg);border:1px solid var(--c-line);font-size:12px;color:var(--c-body);
}
.tag:hover{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.side-cta{
  background:var(--c-dark);border-radius:var(--r-md);padding:24px;color:#fff;border:0;
}
.side-cta h3{color:#fff;font-size:16px;margin-bottom:8px;}
.side-cta p{font-size:13px;color:#9AA9BE;line-height:1.7;margin-bottom:16px;}
.side-cta .btn{width:100%;height:42px;font-size:14px;}

/* ---------- Related / bottom ---------- */
.related{padding:0 0 88px;background:var(--c-surface);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head__l{display:flex;align-items:center;gap:12px;}
.section-head__l::before{content:"";width:3px;height:22px;border-radius:2px;background:var(--c-primary);}
.section-head h2{font-size:24px;}
.section-head__line{flex:1;height:1px;background:var(--c-line);}
.section-head__more{font-size:13px;color:var(--c-primary);white-space:nowrap;}
.section-head__more:hover{text-decoration:underline;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;
  transition:all .18s var(--ease);
}
.card:hover{border-color:rgba(26,95,208,.28);box-shadow:var(--sh-2);transform:translateY(-2px);}
.card__thumb{position:relative;overflow:hidden;}
.card__thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .35s var(--ease);}
.card:hover .card__thumb img{transform:scale(1.03);}
.card__thumb .badge{position:absolute;left:12px;top:12px;}
.card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card__body h3{font-size:16px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card__body h3 a{color:var(--c-ink);}
.card:hover .card__body h3 a{color:var(--c-primary);}
.card__body p{font-size:14px;line-height:1.7;color:var(--c-body);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px solid var(--c-line);}
.card__time{font-size:13px;color:var(--c-muted);}
.card__more{font-size:13px;color:var(--c-primary);}
.back-row{margin-top:32px;text-align:center;}

/* ---------- CTA ---------- */
.cta-block{padding:0 0 88px;background:var(--c-surface);}
.cta-panel{
  position:relative;overflow:hidden;background:var(--c-dark);border-radius:24px;
  padding:56px;color:#fff;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
}
.cta-panel::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.9) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:24px 24px;
}
.cta-panel h2{color:#fff;font-size:30px;line-height:1.32;position:relative;z-index:1;}
.cta-points{margin-top:22px;display:flex;flex-direction:column;gap:12px;position:relative;z-index:1;}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:15px;color:#D5DEEC;}
.cta-points svg{flex-shrink:0;}
.cta-actions{position:relative;z-index:1;display:flex;flex-direction:column;gap:14px;}
.cta-actions .btn{width:100%;}
.cta-note{font-size:13px;color:#9AA9BE;text-align:center;}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-dark);padding:64px 0 32px;color:#9AA9BE;}
.footer__grid{display:grid;grid-template-columns:4fr 2.4fr 2.4fr 2.4fr;gap:40px;}
.footer__brand .logo{color:#fff;}
.footer__brand .logo__mark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);}
.footer__brand .logo__text{color:#fff;}
.footer__desc{margin:16px 0;font-size:13px;line-height:1.8;color:#9AA9BE;max-width:280px;}
.footer__contact{font-size:13px;line-height:2;color:#9AA9BE;}
.footer__contact a{color:#C7D3E4;}
.footer__contact a:hover{color:#fff;}
.footer__col h4{font-size:14px;color:#fff;margin-bottom:16px;font-weight:600;}
.footer__col ul li{margin-bottom:11px;}
.footer__col ul li a,.footer__col ul li{font-size:13px;color:#9AA9BE;line-height:1.7;}
.footer__col ul li a:hover{color:#fff;}
.footer__bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:16px;font-size:12px;color:#7C8CA3;flex-wrap:wrap;
}

/* ---------- Mobile drawer ---------- */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--c-surface);
  display:flex;flex-direction:column;
  transform:translateY(12px);opacity:0;visibility:hidden;
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.drawer__top{display:flex;align-items:center;justify-content:space-between;height:60px;padding:0 16px;border-bottom:1px solid var(--c-line);}
.drawer__close{width:40px;height:40px;border:1px solid var(--c-line);border-radius:var(--r-sm);background:#fff;color:var(--c-ink);display:flex;align-items:center;justify-content:center;}
.drawer__nav{padding:8px 16px;overflow-y:auto;flex:1;}
.drawer__nav a{
  display:flex;align-items:center;height:52px;font-size:16px;color:var(--c-ink);
  border-bottom:1px solid var(--c-line);padding-left:12px;border-left:4px solid transparent;
}
.drawer__nav a.is-active{color:var(--c-primary);font-weight:600;border-left-color:var(--c-primary);}
.drawer__foot{padding:16px;border-top:1px solid var(--c-line);}
.drawer__foot .btn{width:100%;border-radius:var(--r-md);}

@media (max-width:1199px){
  .nav{gap:20px;}
  .nav__link{font-size:14px;}
  .reading__grid{grid-template-columns:minmax(0,1fr) 300px;gap:36px;}
  .cta-panel{padding:48px;gap:36px;}
}
@media (max-width:991px){
  .nav,.header__actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .header__inner{height:60px;}
  .reading__grid{grid-template-columns:1fr;gap:40px;}
  .sidebar{position:static;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .cta-panel{grid-template-columns:1fr;padding:40px;gap:28px;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px;}
  .article-head h1{font-size:28px;}
  .reading,.related,.cta-block{padding-bottom:64px;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .article-head{padding-top:32px;}
  .article-head h1{font-size:26px;letter-spacing:-.2px;}
  .article-cover{margin-top:24px;}
  .article-cover img{border-radius:var(--r-md);}
  .reading{padding-top:36px;}
  .article-body{font-size:16px;line-height:1.8;}
  .article-body h2{font-size:21px;margin-top:36px;}
  .article-body h3{font-size:18px;}
  .card-grid{grid-template-columns:1fr;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .section-head__line{display:none;}
  .cta-panel{padding:32px 24px;border-radius:20px;}
  .cta-panel h2{font-size:23px;}
  .cta-actions .btn{width:100%;}
  .footer__grid{grid-template-columns:1fr;gap:28px;}
  .footer__bottom{flex-direction:column;align-items:center;text-align:center;}
  .crumb__now{max-width:170px;}
}
@media (max-width:520px){
  .logo__text{font-size:13px;}
  .article-body .table-wrap{border-radius:var(--r-sm);}
}

/* roulang page: category1 */
:root{
  --c-primary:#1A5FD0;
  --c-primary-700:#1348A6;
  --c-primary-050:#EAF1FD;
  --c-accent:#0FA98F;
  --c-accent-050:#E6F7F4;
  --c-warm:#F59E2C;
  --c-warm-050:#FEF3E2;
  --c-ink:#0E1B2E;
  --c-body:#47566B;
  --c-muted:#8494A8;
  --c-bg:#F6F9FD;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F2;
  --c-dark:#0C1B33;
  --c-danger:#D64545;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,46,.05);
  --sh-2:0 6px 18px -6px rgba(14,27,46,.10);
  --sh-3:0 18px 40px -18px rgba(14,27,46,.18);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --container:1200px;
  --t:180ms cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-body);
  background:var(--c-bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,textarea,select{font:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3}
h1{font-size:46px;font-weight:800;line-height:1.22;letter-spacing:-.5px}
h2{font-size:32px;line-height:1.3}
h3{font-size:20px;font-weight:600;line-height:1.45}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
svg{flex:none}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
::selection{background:var(--c-primary-050);color:var(--c-primary-700)}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-3)}
.header__inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:72px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo__mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border:1px solid var(--c-line);
  border-radius:10px;
  background:var(--c-primary-050);
  transition:border-color var(--t),background var(--t);
}
.logo:hover .logo__mark{border-color:var(--c-primary);background:#fff}
.logo__text{
  font-size:15px;
  font-weight:700;
  color:var(--c-ink);
  letter-spacing:.2px;
  white-space:nowrap;
}
.nav{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:auto;
}
.nav__link{
  position:relative;
  padding:6px 0;
  font-size:15px;
  font-weight:500;
  color:var(--c-body);
  transition:color var(--t);
  white-space:nowrap;
}
.nav__link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--c-primary);
  border-radius:2px;
  transition:width var(--t);
}
.nav__link:hover{color:var(--c-primary)}
.nav__link:hover::after{width:60%}
.nav__link.is-active{color:var(--c-primary);font-weight:600}
.nav__link.is-active::after{width:60%}
.header__actions{
  display:flex;
  align-items:center;
  gap:20px;
  flex:none;
}
.header__contact{
  font-size:14px;
  color:var(--c-muted);
  transition:color var(--t);
}
.header__contact:hover{color:var(--c-primary)}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  background:var(--c-surface);
  color:var(--c-ink);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border:1px solid transparent;
  border-radius:var(--r-md);
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t),transform var(--t);
}
.btn--primary{background:var(--c-primary);color:#fff}
.btn--primary:hover{background:var(--c-primary-700);transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn--primary:active{transform:translateY(0)}
.btn--outline{background:var(--c-surface);border-color:var(--c-primary);color:var(--c-primary)}
.btn--outline:hover{background:rgba(26,95,208,.06);transform:translateY(-1px)}
.btn--ghost{
  height:auto;
  padding:0;
  background:none;
  color:var(--c-primary);
  border:0;
}
.btn--ghost svg{transition:transform var(--t)}
.btn--ghost:hover{text-decoration:underline}
.btn--ghost:hover svg{transform:translateX(3px)}
.btn--sm{height:44px;padding:0 22px;border-radius:var(--r-pill)}
.btn--light{background:#fff;color:var(--c-primary)}
.btn--light:hover{background:#EAF1FD;transform:translateY(-1px);box-shadow:var(--sh-2)}
.btn--ghostlight{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn--ghostlight:hover{background:rgba(255,255,255,.1);border-color:#fff}
.btn[disabled],.btn.is-disabled{background:#EDF1F7;color:#A9B5C6;border-color:transparent;box-shadow:none;cursor:not-allowed;transform:none}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  letter-spacing:.2px;
}
.badge--primary{background:var(--c-primary-050);color:var(--c-primary)}
.badge--accent{background:var(--c-accent-050);color:var(--c-accent)}
.badge--warm{background:var(--c-warm-050);color:#B26A0B}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:64px 0 76px;
  background:var(--c-bg);
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(var(--c-line) 1px,transparent 1px),linear-gradient(90deg,var(--c-line) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.35;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 78%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 78%);
  pointer-events:none;
}
.hero__inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:52px;
  align-items:center;
}
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin-bottom:18px;
  font-size:13px;
  color:var(--c-muted);
}
.crumbs a{transition:color var(--t)}
.crumbs a:hover{color:var(--c-primary)}
.crumbs span{color:#C3CDDA}
.hero__badge{margin-bottom:14px}
.hero__lead{
  margin-top:20px;
  max-width:34em;
  font-size:17px;
  line-height:1.8;
  color:var(--c-body);
}
.hero__actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-top:30px;
}
.hero__trust{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
  margin-top:38px;
  padding-top:22px;
  border-top:1px solid var(--c-line);
}
.hero__trust li{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--c-body);
  line-height:1.5;
}
.hero__trust svg{color:var(--c-accent)}
.hero__media{position:relative}
.hero__media img{
  width:100%;
  aspect-ratio:16/12;
  object-fit:cover;
  border-radius:var(--r-lg);
  box-shadow:var(--sh-3);
  background:#EDF1F7;
}

/* ---------- section base ---------- */
.section{padding:88px 0}
.section--surface{background:var(--c-surface)}
.section--bg{background:var(--c-bg)}
.section__head{max-width:720px}
.section__title{
  display:flex;
  align-items:center;
  gap:14px;
  font-size:32px;
  font-weight:700;
}
.section__title::before{
  content:"";
  width:3px;
  height:26px;
  border-radius:2px;
  background:var(--c-primary);
}
.section__title::after{
  content:"";
  width:7px;height:7px;
  border-radius:50%;
  border:1px solid var(--c-primary);
  background:var(--c-primary-050);
}
.section__desc{
  margin-top:14px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-body);
}

/* ---------- guide list ---------- */
.guide{
  margin-top:44px;
  border-top:1px solid var(--c-line);
}
.guide__item{
  display:flex;
  gap:24px;
  padding:28px 8px;
  border-bottom:1px solid var(--c-line);
  transition:background var(--t);
}
.guide__item:hover{background:#FBFDFF}
.guide__num{
  flex:none;
  width:40px;height:40px;
  display:grid;place-items:center;
  border-radius:10px;
  background:rgba(26,95,208,.12);
  color:var(--c-primary);
  font-size:15px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
}
.guide__body{flex:1;min-width:0}
.guide__body h3{margin-bottom:8px;font-size:19px}
.guide__body p{
  max-width:74ch;
  font-size:15px;
  line-height:1.85;
  color:var(--c-body);
}
.guide__tag{margin-top:12px}

/* ---------- note block ---------- */
.noteblock{
  display:flex;
  gap:16px;
  margin-top:34px;
  padding:22px 24px;
  background:var(--c-bg);
  border:1px solid var(--c-line);
  border-left:3px solid var(--c-primary);
  border-radius:var(--r-md);
}
.noteblock svg{color:var(--c-primary);margin-top:3px}
.noteblock h3{font-size:16px;margin-bottom:6px}
.noteblock p{font-size:14px;line-height:1.8;color:var(--c-body)}

/* ---------- check section ---------- */
.check__inner{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:start;
}
.check__media{
  margin-top:24px;
  border-radius:var(--r-md);
  overflow:hidden;
  box-shadow:var(--sh-2);
}
.check__media img{
  width:100%;
  aspect-ratio:16/10;
  object-fit:cover;
  background:#EDF1F7;
}
.check__list{
  display:flex;
  flex-direction:column;
  border-top:1px solid var(--c-line);
}
.check__list li{
  display:flex;
  gap:14px;
  padding:18px 6px;
  border-bottom:1px solid var(--c-line);
  transition:background var(--t);
}
.check__list li:hover{background:#FBFDFF}
.check__list svg{color:var(--c-accent);margin-top:4px}
.check__list strong{
  display:block;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  margin-bottom:4px;
}
.check__list span{font-size:14px;line-height:1.75;color:var(--c-body)}

/* ---------- faq ---------- */
.faq__inner{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:56px;
  align-items:start;
}
.faq__side p{
  margin-top:14px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-body);
}
.faq__side .btn{margin-top:24px}
.faq{display:flex;flex-direction:column;gap:12px}
.faq__item{
  position:relative;
  overflow:hidden;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  transition:border-color var(--t),box-shadow var(--t);
}
.faq__item::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:3px;
  background:var(--c-primary);
  transform:scaleY(0);
  transform-origin:top;
  transition:transform 220ms cubic-bezier(.4,0,.2,1);
}
.faq__item:hover{border-color:rgba(26,95,208,.28);box-shadow:var(--sh-2)}
.faq__item.is-open{border-color:rgba(26,95,208,.35);box-shadow:var(--sh-2)}
.faq__item.is-open::before{transform:scaleY(1)}
.faq__q{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  min-height:56px;
  padding:12px 16px 12px 20px;
  text-align:left;
  font-size:16px;
  font-weight:600;
  color:var(--c-body);
  transition:color var(--t);
}
.faq__item.is-open .faq__q,
.faq__q:hover{color:var(--c-ink)}
.faq__icon{
  flex:none;
  width:24px;height:24px;
  display:grid;place-items:center;
  border-radius:50%;
  background:var(--c-primary-050);
  color:var(--c-primary);
  transition:transform 220ms cubic-bezier(.4,0,.2,1),background var(--t);
}
.faq__item.is-open .faq__icon{transform:rotate(45deg);background:var(--c-primary);color:#fff}
.faq__a{
  max-height:0;
  overflow:hidden;
  transition:max-height 220ms cubic-bezier(.4,0,.2,1);
}
.faq__item.is-open .faq__a{max-height:340px}
.faq__a p{
  padding:0 20px 18px;
  font-size:15px;
  line-height:1.85;
  color:var(--c-body);
}

/* ---------- category pills ---------- */
.cats-section{padding:0 0 88px}
.cats{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:24px;
}
.cats a{
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 18px;
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  background:var(--c-surface);
  font-size:14px;
  color:var(--c-body);
  transition:border-color var(--t),color var(--t),background var(--t),transform var(--t);
}
.cats a:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px)}
.cats a.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.cats a.is-active:hover{background:var(--c-primary-700)}

/* ---------- cta ---------- */
.cta{padding:0 0 88px}
.cta__box{
  position:relative;
  overflow:hidden;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  padding:56px;
  border-radius:24px;
  background:var(--c-dark);
  color:#fff;
  box-shadow:var(--sh-3);
}
.cta__box::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
}
.cta__left,.cta__right{position:relative;z-index:1}
.cta__box h2{color:#fff;font-size:30px}
.cta__points{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-top:24px;
}
.cta__points li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:15px;
  color:#CBD6E4;
}
.cta__points svg{color:var(--c-accent)}
.cta__actions{
  display:flex;
  flex-direction:column;
  gap:14px;
}
.cta__actions .btn{width:100%}
.cta__note{
  margin-top:16px;
  font-size:13px;
  line-height:1.8;
  color:#8494A8;
}
.cta__note a{color:#fff;border-bottom:1px solid rgba(255,255,255,.4)}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-dark);
  color:#9AA9BE;
  padding:64px 0 32px;
  font-size:13px;
  line-height:1.9;
}
.footer__grid{
  display:grid;
  grid-template-columns:4fr 2.4fr 2.4fr 3fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer__brand .logo{margin-bottom:16px}
.footer__brand .logo__mark{
  background:rgba(255,255,255,.06);
  border-color:rgba(255,255,255,.14);
}
.footer__brand .logo__text{color:#fff}
.footer__desc{max-width:30ch;color:#9AA9BE}
.footer__contact{margin-top:16px;color:#9AA9BE}
.footer__contact a{color:#fff;transition:color var(--t)}
.footer__contact a:hover{color:var(--c-primary-050)}
.footer__col h4{
  margin-bottom:14px;
  font-size:14px;
  font-weight:600;
  color:#fff;
}
.footer__col li{margin-bottom:8px}
.footer__col a{transition:color var(--t)}
.footer__col a:hover{color:#fff}
.footer__bottom{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  padding-top:24px;
  font-size:12px;
  color:#8494A8;
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .nav{gap:22px}
  .header__inner{gap:22px}
  .hero__inner{gap:40px}
}
@media (max-width:1100px){
  .check__inner{gap:40px}
  .faq__inner{gap:40px}
}
@media (max-width:991px){
  .header__inner{height:60px;gap:12px}
  .logo__mark{width:32px;height:32px;border-radius:9px}
  .logo__text{font-size:13px}
  .nav-toggle{display:grid;place-items:center;margin-left:auto}
  .nav{
    position:fixed;
    top:60px;left:0;right:0;bottom:0;
    z-index:999;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:8px 20px 140px;
    background:#fff;
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-8px);
    transition:opacity 220ms ease,transform 220ms ease,visibility 220ms ease;
  }
  .site-header.nav-open .nav{opacity:1;visibility:visible;transform:none}
  .nav__link{
    display:flex;
    align-items:center;
    height:52px;
    padding-left:12px;
    border-bottom:1px solid var(--c-line);
    font-size:16px;
  }
  .nav__link::after{display:none}
  .nav__link.is-active{box-shadow:inset 4px 0 0 var(--c-primary);padding-left:16px}
  .header__actions{
    position:fixed;
    left:0;right:0;bottom:0;
    z-index:1001;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:10px;
    margin:0;
    padding:12px 20px calc(12px + env(safe-area-inset-bottom,0px));
    background:#fff;
    border-top:1px solid var(--c-line);
    box-shadow:var(--sh-3);
    opacity:0;
    visibility:hidden;
    transform:translateY(100%);
    transition:opacity 220ms ease,transform 220ms ease,visibility 220ms ease;
  }
  .site-header.nav-open .header__actions{opacity:1;visibility:visible;transform:none}
  .header__contact{text-align:center;font-size:14px}
  .header__actions .btn{width:100%;height:48px;border-radius:var(--r-md)}
  body.nav-locked{overflow:hidden}

  h1{font-size:34px}
  .hero{padding:44px 0 56px}
  .hero__inner{grid-template-columns:1fr;gap:32px}
  .hero__media{order:2}
  .hero__trust{grid-template-columns:repeat(2,1fr);gap:14px}
  .section{padding:72px 0}
  .section__title{font-size:26px}
  .check__inner{grid-template-columns:1fr;gap:32px}
  .faq__inner{grid-template-columns:1fr;gap:32px}
  .cta__box{grid-template-columns:1fr;gap:32px;padding:40px}
  .footer__grid{grid-template-columns:repeat(2,1fr);gap:32px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .cats-section{padding:0 0 56px}
  .cta{padding:0 0 56px}
  h1{font-size:30px}
  h2{font-size:24px}
  .section__title{font-size:24px}
  .section__title::after{display:none}
  .hero__actions .btn{width:100%}
  .guide__item{flex-direction:column;gap:14px;padding:24px 4px}
  .guide__num{width:36px;height:36px}
  .noteblock{flex-direction:column;gap:10px}
  .cta__box{padding:32px 24px;border-radius:20px}
  .cta__box h2{font-size:23px}
  .check__media{margin-top:18px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero__trust{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;align-items:center;text-align:center}
  .faq__q{font-size:15px;padding:12px 14px 12px 16px}
  .faq__a p{padding:0 16px 16px;font-size:14px}
}

/* roulang page: category2 */
:root{
  --c-primary:#1A5FD0;
  --c-primary-700:#1348A6;
  --c-primary-050:#EAF1FD;
  --c-accent:#0FA98F;
  --c-accent-050:#E6F7F4;
  --c-warm:#F59E2C;
  --c-warm-050:#FEF3E2;
  --c-ink:#0E1B2E;
  --c-body:#47566B;
  --c-muted:#8494A8;
  --c-bg:#F6F9FD;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F2;
  --c-dark:#0C1B33;
  --c-error:#D64545;
  --c-disabled-bg:#EDF1F7;
  --c-disabled-text:#A9B5C6;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,46,.05);
  --sh-2:0 6px 18px -6px rgba(14,27,46,.10);
  --sh-3:0 18px 40px -18px rgba(14,27,46,.18);
  --dur:180ms;
  --ease:cubic-bezier(.4,0,.2,1);
  --pad-section:88px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);}
a:hover{color:var(--c-primary-700);}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3;}
h1{font-size:46px;font-weight:800;line-height:1.22;letter-spacing:-.5px;}
h2{font-size:32px;}
h3{font-size:20px;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;}
.num{font-variant-numeric:tabular-nums;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:var(--pad-section) 0;}
.section--surface{background:var(--c-surface);}
.section--bg{background:var(--c-bg);}

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--c-primary-050);
  border-bottom:1px solid var(--c-line);
  font-size:13px;
  color:var(--c-body);
}
.topbar__inner{display:flex;align-items:center;gap:10px;height:32px;}
.topbar__dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent);flex:none;box-shadow:0 0 0 3px rgba(15,169,143,.15);}
.topbar__text{flex:1;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;}
.topbar__link{color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:4px;}
.topbar__link:hover{gap:7px;}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-3);}
.header__inner{display:flex;align-items:center;gap:28px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none;}
.logo__mark{
  width:34px;height:34px;border-radius:10px;flex:none;
  border:1px solid var(--c-line);
  background:var(--c-primary-050);
  display:inline-flex;align-items:center;justify-content:center;
}
.logo__text{font-size:15px;font-weight:700;color:var(--c-ink);letter-spacing:-.2px;white-space:nowrap;}
.logo:hover .logo__text{color:var(--c-primary);}
.nav{display:flex;align-items:center;gap:28px;margin-left:8px;flex:1;min-width:0;}
.nav__link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--c-body);
  padding:6px 0;white-space:nowrap;
}
.nav__link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:60%;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform var(--dur) var(--ease);
}
.nav__link:hover{color:var(--c-primary);}
.nav__link:hover::after{transform:scaleX(1);}
.nav__link.is-active{color:var(--c-primary);font-weight:600;}
.nav__link.is-active::after{transform:scaleX(1);}
.header__actions{display:flex;align-items:center;gap:18px;flex:none;}
.header__contact{font-size:14px;color:var(--c-muted);}
.header__contact:hover{color:var(--c-primary);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--r-md);
  font-size:15px;font-weight:600;cursor:pointer;
  padding:0 26px;height:48px;
  transition:all var(--dur) var(--ease);
  white-space:nowrap;
}
.btn svg{flex:none;transition:transform var(--dur) var(--ease);}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--c-primary-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);box-shadow:var(--sh-1);}
.btn--ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn--ghost:hover{background:rgba(26,95,208,.06);color:var(--c-primary-700);border-color:var(--c-primary-700);}
.btn--text{background:transparent;color:var(--c-primary);padding:0;height:auto;border:0;font-weight:600;}
.btn--text:hover{color:var(--c-primary-700);}
.btn--text:hover svg{transform:translateX(3px);}
.btn--light{background:#fff;color:var(--c-primary);}
.btn--light:hover{background:#EAF1FD;color:var(--c-primary-700);transform:translateY(-1px);}
.btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn--outline-light:hover{background:rgba(255,255,255,.10);color:#fff;border-color:#fff;}
.btn--sm{height:44px;padding:0 22px;font-size:14px;}
.btn--block{width:100%;}
.btn[disabled],.btn.is-disabled{background:var(--c-disabled-bg);color:var(--c-disabled-text);border-color:transparent;box-shadow:none;cursor:not-allowed;transform:none;}

/* 汉堡 */
.nav-toggle{
  display:none;width:40px;height:40px;flex:none;
  align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-sm);
  color:var(--c-ink);cursor:pointer;
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* 移动抽屉 */
.drawer{
  position:fixed;inset:0;z-index:90;
  background:#fff;display:flex;flex-direction:column;
  transform:translateY(12px);opacity:0;visibility:hidden;
  transition:opacity 220ms var(--ease),transform 220ms var(--ease),visibility 220ms;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;height:60px;padding:0 16px;border-bottom:1px solid var(--c-line);}
.drawer__close{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-sm);color:var(--c-ink);cursor:pointer;}
.drawer__close:hover{border-color:var(--c-primary);color:var(--c-primary);}
.drawer__nav{flex:1;overflow-y:auto;padding:8px 16px;}
.drawer__link{
  display:flex;align-items:center;gap:10px;height:52px;
  border-bottom:1px solid var(--c-line);
  font-size:16px;color:var(--c-ink);font-weight:500;
}
.drawer__link:hover{color:var(--c-primary);}
.drawer__link.is-active{color:var(--c-primary);font-weight:700;position:relative;padding-left:14px;}
.drawer__link.is-active::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:2px;background:var(--c-primary);}
.drawer__foot{padding:16px;border-top:1px solid var(--c-line);}

/* ============ 面包屑 ============ */
.crumb{background:var(--c-bg);border-bottom:1px solid var(--c-line);}
.crumb__inner{display:flex;align-items:center;gap:8px;height:48px;font-size:13px;color:var(--c-muted);flex-wrap:wrap;}
.crumb a{color:var(--c-muted);}
.crumb a:hover{color:var(--c-primary);}
.crumb__sep{color:#C3CDDB;}
.crumb__current{color:var(--c-muted);}

/* ============ Hero ============ */
.hero{background:var(--c-bg);padding:56px 0 72px;border-bottom:1px solid var(--c-line);}
.hero__grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero__badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;border-radius:var(--r-pill);
  background:var(--c-primary-050);color:var(--c-primary);
  font-size:12px;font-weight:600;margin-bottom:18px;
}
.hero h1{margin-bottom:16px;}
.hero h1 em{font-style:normal;color:var(--c-primary);}
.hero__desc{font-size:16px;line-height:1.85;color:var(--c-body);max-width:560px;margin-bottom:26px;}
.hero__actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.hero__media{position:relative;}
.hero__media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--sh-3);
  background:var(--c-disabled-bg);
}
.hero__tag{
  position:absolute;left:18px;bottom:18px;
  background:#fff;border-radius:var(--r-md);box-shadow:var(--sh-2);
  padding:12px 16px;display:flex;align-items:center;gap:10px;
}
.hero__tag b{font-size:22px;color:var(--c-ink);line-height:1;}
.hero__tag span{font-size:12px;color:var(--c-muted);}

/* ============ 通用板块头 ============ */
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section__title{position:relative;padding-left:16px;}
.section__title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--c-primary);}
.section__title::after{content:"";position:absolute;left:-6px;top:2px;width:7px;height:7px;border-radius:50%;background:var(--c-primary-050);border:1px solid var(--c-primary);}
.section__title h2{font-size:32px;}
.section__sub{margin-top:10px;font-size:14px;color:var(--c-muted);}
.section__link{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.section__link:hover{gap:9px;}

/* ============ 线路卡片栅格 ============ */
.line-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.line-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh-1);
  display:flex;flex-direction:column;gap:14px;
  transition:all var(--dur) var(--ease);
}
.line-card:hover{border-color:rgba(26,95,208,.35);box-shadow:var(--sh-2);transform:translateY(-2px);}
.line-card__top{display:flex;align-items:center;gap:14px;}
.icon-box{
  width:44px;height:44px;flex:none;border-radius:12px;
  background:var(--c-primary-050);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(26,95,208,.12);
}
.line-card h3{font-size:19px;}
.line-card__status{
  margin-left:auto;display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;
  background:var(--c-accent-050);color:#0B8471;
}
.line-card__status.is-warn{background:var(--c-warm-050);color:#B26C09;}
.line-card__status.is-mute{background:var(--c-disabled-bg);color:var(--c-disabled-text);}
.line-card p{font-size:14px;line-height:1.8;color:var(--c-body);}
.line-card__meta{display:flex;gap:8px;flex-wrap:wrap;}
.chip{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;background:var(--c-bg);color:var(--c-muted);border:1px solid var(--c-line);
}
.chip--primary{background:var(--c-primary-050);color:var(--c-primary);border-color:transparent;}
.line-card__foot{
  margin-top:auto;padding-top:16px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.line-card__foot span{font-size:13px;color:var(--c-muted);}

/* ============ 对比表 ============ */
.table-wrap{
  overflow-x:auto;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-md);box-shadow:var(--sh-1);
}
table{border-collapse:collapse;width:100%;min-width:760px;font-size:14px;}
thead th{
  background:#F6F9FD;color:var(--c-ink);font-weight:600;font-size:14px;
  text-align:left;padding:16px;border-bottom:1px solid var(--c-line);white-space:nowrap;
}
tbody td{padding:16px;border-bottom:1px solid var(--c-line);color:var(--c-body);vertical-align:top;}
tbody tr:last-child td{border-bottom:0;}
tbody tr:hover{background:#FBFDFF;}
td .num{color:var(--c-ink);font-weight:600;}
.state{display:inline-flex;align-items:center;gap:6px;font-weight:600;}
.state::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--c-accent);}
.state--warn::before{background:var(--c-warm);}
.state--off::before{background:var(--c-muted);}

/* ============ 排查顺序（非对称 5/7） ============ */
.split{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.split__aside h2{margin-bottom:14px;}
.split__aside p{font-size:15px;line-height:1.85;color:var(--c-body);margin-bottom:22px;}
.dark-card{
  background:var(--c-dark);color:#fff;border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-3);
}
.dark-card b{display:block;font-size:40px;line-height:1.1;font-weight:800;margin-bottom:8px;}
.dark-card span{font-size:13px;color:#9AA9BE;}
.step-list{display:flex;flex-direction:column;}
.step-item{
  display:flex;gap:20px;padding:22px 0;border-bottom:1px solid var(--c-line);
}
.step-item:last-child{border-bottom:0;}
.step-item__no{
  width:40px;height:40px;flex:none;border-radius:10px;
  background:var(--c-primary-050);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;
}
.step-item h3{font-size:17px;margin-bottom:6px;}
.step-item p{font-size:14px;line-height:1.8;color:var(--c-body);}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:9fr 3fr;gap:40px;align-items:start;}
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.faq-item:hover{border-color:rgba(26,95,208,.3);box-shadow:var(--sh-2);}
.faq-item.is-open{border-color:rgba(26,95,208,.4);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  padding:0 18px;min-height:56px;background:transparent;border:0;
  text-align:left;cursor:pointer;font-size:16px;font-weight:600;color:var(--c-body);
  font-family:inherit;transition:color var(--dur) var(--ease);
}
.faq-item.is-open .faq-q{color:var(--c-ink);}
.faq-item.is-open{border-left:3px solid var(--c-primary);}
.faq-q__icon{
  margin-left:auto;flex:none;width:20px;height:20px;position:relative;
  transition:transform 220ms var(--ease);
}
.faq-q__icon::before,.faq-q__icon::after{
  content:"";position:absolute;background:var(--c-primary);border-radius:2px;
}
.faq-q__icon::before{left:9px;top:3px;width:2px;height:14px;}
.faq-q__icon::after{top:9px;left:3px;width:14px;height:2px;}
.faq-item.is-open .faq-q__icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height 220ms var(--ease);
}
.faq-a__inner{padding:0 18px 18px 18px;font-size:14px;line-height:1.85;color:var(--c-body);}
.faq-side{
  position:sticky;top:96px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);
}
.faq-side h3{font-size:16px;margin-bottom:12px;}
.faq-side ul{display:flex;flex-direction:column;gap:10px;}
.faq-side li{font-size:13px;color:var(--c-body);line-height:1.7;display:flex;gap:8px;}
.faq-side li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:none;margin-top:8px;}

/* ============ 分类胶囊导航 ============ */
.catnav{display:flex;flex-wrap:wrap;gap:12px;}
.catnav a{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;
  border-radius:var(--r-pill);border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-body);font-size:14px;font-weight:500;
}
.catnav a:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-050);}
.catnav a.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600;}

/* ============ CTA ============ */
.cta-block{
  position:relative;overflow:hidden;
  background:var(--c-dark);border-radius:24px;padding:56px;
  display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;
  box-shadow:var(--sh-3);
}
.cta-block::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.55;
}
.cta-block__content{position:relative;z-index:1;}
.cta-block h2{color:#fff;font-size:32px;margin-bottom:14px;}
.cta-block p{color:#C6D2E4;font-size:15px;line-height:1.8;margin-bottom:20px;}
.cta-points{display:flex;flex-direction:column;gap:10px;}
.cta-points li{display:flex;align-items:center;gap:10px;color:#E4EBF5;font-size:14px;}
.cta-points svg{flex:none;color:var(--c-accent);}
.cta-actions{position:relative;z-index:1;display:flex;flex-direction:column;gap:12px;}
.cta-note{font-size:13px;color:#9AA9BE;text-align:center;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-dark);color:#9AA9BE;padding:64px 0 32px;margin-top:88px;}
.footer__grid{display:grid;grid-template-columns:4fr 2.5fr 2.5fr 3fr;gap:40px;}
.footer__brand .logo__text{color:#fff;}
.footer__brand .logo__mark{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.16);}
.footer__desc{font-size:13px;line-height:1.8;margin:16px 0;color:#9AA9BE;}
.footer__contact{font-size:13px;line-height:2;color:#9AA9BE;}
.footer__contact a{color:#9AA9BE;}
.footer__contact a:hover{color:#fff;}
.footer__col h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer__col ul{display:flex;flex-direction:column;gap:10px;}
.footer__col li{font-size:13px;color:#9AA9BE;}
.footer__col a{font-size:13px;color:#9AA9BE;}
.footer__col a:hover{color:#fff;}
.footer__bottom{
  margin-top:40px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:#7C8CA5;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav{gap:20px;}
  .nav__link{font-size:14px;}
}
@media (max-width:991px){
  :root{--pad-section:72px;}
  h1{font-size:36px;}
  h2,.section__title h2,.cta-block h2{font-size:26px;}
  .nav,.header__contact{display:none;}
  .nav-toggle{display:inline-flex;}
  .header__inner{height:60px;gap:14px;justify-content:space-between;}
  .logo__text{font-size:13px;}
  .hero__grid{grid-template-columns:1fr;gap:32px;}
  .hero{padding:40px 0 56px;}
  .line-grid{grid-template-columns:1fr;}
  .split{grid-template-columns:1fr;gap:32px;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .faq-side{position:static;}
  .cta-block{grid-template-columns:1fr;padding:40px;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px;}
  .topbar{display:none;}
}
@media (max-width:767px){
  :root{--pad-section:56px;}
  .container{padding:0 16px;}
  h1{font-size:30px;}
  h2,.section__title h2,.cta-block h2{font-size:23px;}
  .hero__actions .btn,.cta-actions .btn{width:100%;}
  .hero__tag{display:none;}
  .line-card,.faq-side{padding:22px;}
  .cta-block{padding:32px 22px;border-radius:18px;}
  .site-footer{padding:48px 0 28px;margin-top:56px;}
  .footer__grid{grid-template-columns:1fr;gap:28px;}
  .footer__bottom{flex-direction:column;text-align:center;align-items:center;}
  .section__head{margin-bottom:28px;}
}
@media (max-width:520px){
  .step-item{gap:14px;}
  .catnav a{height:38px;padding:0 14px;font-size:13px;}
  .btn{font-size:14px;}
}

/* roulang page: category3 */
:root{
  --c-primary:#1A5FD0;
  --c-primary-700:#1348A6;
  --c-primary-050:#EAF1FD;
  --c-accent:#0FA98F;
  --c-accent-050:#E6F7F4;
  --c-warm:#F59E2C;
  --c-warm-050:#FEF3E2;
  --c-warm-700:#A96608;
  --c-ink:#0E1B2E;
  --c-body:#47566B;
  --c-muted:#8494A8;
  --c-bg:#F6F9FD;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F2;
  --c-dark:#0C1B33;
  --c-disabled-bg:#EDF1F7;
  --c-disabled-text:#A9B5C6;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,46,.05);
  --sh-2:0 6px 18px -6px rgba(14,27,46,.10);
  --sh-3:0 18px 40px -18px rgba(14,27,46,.18);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --t:180ms cubic-bezier(.4,0,.2,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-body);
  background:var(--c-bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--t),border-color var(--t),background var(--t);}
a:hover{color:var(--c-primary-700);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  .container{max-width:1280px;}
}

/* ============ 顶部信息条 ============ */
.topbar{
  background:var(--c-primary-050);
  border-bottom:1px solid var(--c-line);
  font-size:13px;
  color:var(--c-body);
  height:32px;
  display:flex;
  align-items:center;
}
.topbar__inner{display:flex;align-items:center;gap:10px;width:100%;}
.topbar__dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);flex:none;}
.topbar__text{overflow:hidden;white-space:nowrap;text-overflow:ellipsis;}
.topbar__link{margin-left:auto;font-weight:600;flex:none;display:inline-flex;align-items:center;gap:4px;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--t),background var(--t);
}
.site-header.is-scrolled{box-shadow:var(--sh-3);}
.header__inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:72px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none;color:var(--c-ink);}
.logo:hover{color:var(--c-ink);}
.logo__mark{
  width:32px;height:32px;border-radius:10px;
  background:var(--c-primary-050);
  border:1px solid var(--c-line);
  display:inline-flex;align-items:center;justify-content:center;
  flex:none;
}
.logo__text{font-size:15px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}

.nav{display:flex;align-items:center;gap:28px;margin:0 auto;}
.nav__link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--c-body);
  padding:6px 0;
  white-space:nowrap;
}
.nav__link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  height:2px;width:0;
  background:var(--c-primary);
  border-radius:2px;
  transition:width var(--t);
}
.nav__link:hover{color:var(--c-primary);}
.nav__link:hover::after{width:60%;}
.nav__link.is-active{color:var(--c-primary);}
.nav__link.is-active::after{width:60%;}

.header__actions{display:flex;align-items:center;gap:18px;flex:none;}
.header__contact{font-size:14px;color:var(--c-muted);}
.header__contact:hover{color:var(--c-primary);}

.nav-toggle{
  display:none;
  width:40px;height:40px;
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  color:var(--c-ink);
  align-items:center;justify-content:center;
  flex:none;
  transition:border-color var(--t),background var(--t);
}
.nav-toggle:hover{border-color:var(--c-primary);background:var(--c-primary-050);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 26px;
  border-radius:var(--r-md);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:background var(--t),color var(--t),border-color var(--t),box-shadow var(--t),transform var(--t);
}
.btn svg{flex:none;transition:transform var(--t);}
.btn:hover svg{transform:translateX(3px);}
.btn--sm{height:44px;padding:0 22px;border-radius:var(--r-pill);font-size:14px;}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--c-primary-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);}
.btn--secondary{background:#fff;border-color:var(--c-primary);color:var(--c-primary);}
.btn--secondary:hover{background:var(--c-primary-050);color:var(--c-primary-700);border-color:var(--c-primary-700);}
.btn--ghost{background:transparent;color:var(--c-primary);padding:0 4px;}
.btn--ghost:hover{color:var(--c-primary-700);}
.btn--white{background:#fff;color:var(--c-primary);width:100%;}
.btn--white:hover{background:var(--c-primary-050);color:var(--c-primary-700);}
.btn--ghost-white{background:transparent;border-color:rgba(255,255,255,.5);color:#fff;width:100%;}
.btn--ghost-white:hover{background:rgba(255,255,255,.10);color:#fff;border-color:#fff;}
.btn[disabled],.btn.is-disabled{
  background:var(--c-disabled-bg);color:var(--c-disabled-text);
  border-color:transparent;box-shadow:none;cursor:not-allowed;transform:none;
}

/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;
  inset:0;
  z-index:200;
  background:#fff;
  display:flex;
  flex-direction:column;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity 220ms ease,transform 220ms ease,visibility 220ms ease;
}
.drawer.is-open{opacity:1;visibility:visible;transform:none;}
.drawer__top{
  display:flex;align-items:center;justify-content:space-between;
  height:60px;flex:none;
  padding:0 16px;
  border-bottom:1px solid var(--c-line);
}
.drawer__close{
  width:40px;height:40px;
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--c-ink);
}
.drawer__close:hover{border-color:var(--c-primary);background:var(--c-primary-050);}
.drawer__nav{flex:1;overflow-y:auto;padding:8px 16px 16px;}
.drawer__link{
  display:flex;align-items:center;
  height:52px;
  border-bottom:1px solid var(--c-line);
  padding-left:14px;
  font-size:16px;
  font-weight:500;
  color:var(--c-ink);
  position:relative;
}
.drawer__link:hover{color:var(--c-primary);}
.drawer__link.is-active{color:var(--c-primary);font-weight:600;}
.drawer__link.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:20px;border-radius:2px;background:var(--c-primary);
}
.drawer__foot{flex:none;padding:12px 16px 20px;border-top:1px solid var(--c-line);}
.drawer__foot .btn{width:100%;}

/* ============ 面包屑 ============ */
.breadcrumb{
  font-size:13px;
  color:var(--c-muted);
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  margin-bottom:18px;
}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb__sep{color:#C3CDDA;}

/* ============ 分类页首屏 ============ */
.cat-hero{
  background:var(--c-bg);
  padding:56px 0 64px;
  border-bottom:1px solid var(--c-line);
}
.cat-hero__inner{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}
.cat-hero__text{min-width:0;}
.cat-hero h1{
  font-size:40px;
  font-weight:800;
  line-height:1.24;
  letter-spacing:-.5px;
  color:var(--c-ink);
  margin-bottom:16px;
}
.cat-hero__desc{
  font-size:16px;
  line-height:1.8;
  color:var(--c-body);
  max-width:560px;
  margin-bottom:22px;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.tag{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  font-weight:600;
  background:var(--c-primary-050);
  color:var(--c-primary);
}
.tag--accent{background:var(--c-accent-050);color:#0B7C69;}
.tag--warm{background:var(--c-warm-050);color:var(--c-warm-700);}
.cat-hero__actions{display:flex;flex-wrap:wrap;gap:12px;}
.cat-hero__media{
  border-radius:var(--r-lg);
  overflow:hidden;
  box-shadow:var(--sh-2);
  aspect-ratio:16/11;
  background:var(--c-disabled-bg);
}
.cat-hero__media img{width:100%;height:100%;object-fit:cover;}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section--surface{background:var(--c-surface);}
.section--tint{background:var(--c-bg);}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section__title{
  position:relative;
  padding-left:14px;
  font-size:32px;
  font-weight:700;
  line-height:1.3;
  color:var(--c-ink);
}
.section__title::before{
  content:"";
  position:absolute;
  left:0;top:.18em;
  width:3px;height:1.05em;
  border-radius:2px;
  background:var(--c-primary);
}
.section__sub{margin-top:10px;font-size:14px;color:var(--c-muted);}

/* ============ FAQ 布局 ============ */
.faq-layout{
  display:grid;
  grid-template-columns:3fr 9fr;
  gap:40px;
  align-items:start;
}

.toc{
  position:sticky;
  top:96px;
}
.toc__title{
  font-size:13px;
  font-weight:700;
  letter-spacing:.6px;
  color:var(--c-muted);
  margin-bottom:14px;
}
.toc__list{
  border-left:1px solid var(--c-line);
}
.toc__link{
  position:relative;
  display:block;
  padding:10px 0 10px 16px;
  font-size:15px;
  color:var(--c-body);
  line-height:1.5;
}
.toc__link::before{
  content:"";
  position:absolute;
  left:-1px;top:8px;bottom:8px;
  width:3px;
  border-radius:2px;
  background:transparent;
  transition:background var(--t);
}
.toc__link:hover{color:var(--c-primary);}
.toc__link.is-current{color:var(--c-primary);font-weight:600;}
.toc__link.is-current::before{background:var(--c-primary);}
.toc__card{
  margin-top:24px;
  padding:20px;
  border-radius:var(--r-md);
  background:var(--c-primary-050);
  border:1px solid #D7E4FA;
}
.toc__card p{font-size:13px;line-height:1.8;color:var(--c-body);margin-bottom:14px;}
.toc__card .btn{width:100%;height:42px;font-size:14px;}

.faq-group{margin-bottom:48px;scroll-margin-top:110px;}
.faq-group:last-child{margin-bottom:0;}
.faq-group__title{
  position:relative;
  padding-left:14px;
  font-size:24px;
  font-weight:700;
  color:var(--c-ink);
  margin-bottom:8px;
}
.faq-group__title::before{
  content:"";
  position:absolute;
  left:0;top:.2em;
  width:3px;height:1em;
  border-radius:2px;
  background:var(--c-primary);
}
.faq-group__hint{font-size:13px;color:var(--c-muted);margin-bottom:20px;}

.faq-item{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  margin-bottom:12px;
  overflow:hidden;
  transition:box-shadow var(--t),border-color var(--t);
}
.faq-item:hover{border-color:rgba(26,95,208,.28);box-shadow:var(--sh-2);}
.faq-item.is-open{
  border-color:rgba(26,95,208,.35);
  box-shadow:inset 3px 0 0 var(--c-primary),var(--sh-2);
}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  text-align:left;
  padding:16px 20px;
  min-height:56px;
  font-size:16px;
  font-weight:600;
  color:var(--c-body);
  transition:color var(--t);
}
.faq-q:hover{color:var(--c-primary);}
.faq-item.is-open .faq-q{color:var(--c-ink);}
.faq-icon{
  position:relative;
  width:16px;height:16px;
  flex:none;
  transition:transform 220ms cubic-bezier(.4,0,.2,1);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--c-primary);
  border-radius:2px;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{top:0;left:7px;width:2px;height:16px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms cubic-bezier(.4,0,.2,1);}
.faq-a__inner{padding:0 20px 20px;}
.faq-a__inner p{font-size:15px;line-height:1.85;color:var(--c-body);}
.faq-a__inner p + p{margin-top:8px;}
.faq-a__inner .faq-meta{
  margin-top:12px;
  font-size:12px;
  color:var(--c-muted);
}

/* ============ 侧栏小卡 / 提示块 ============ */
.note{
  margin-top:22px;
  padding:18px 20px;
  background:var(--c-bg);
  border-radius:var(--r-md);
  border-left:3px solid var(--c-primary);
  font-size:14px;
  line-height:1.8;
  color:var(--c-body);
}
.note strong{color:var(--c-ink);}

/* ============ 其他分类胶囊 ============ */
.catnav{background:var(--c-surface);border-top:1px solid var(--c-line);padding:28px 0;}
.catnav__inner{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.catnav__label{font-size:13px;font-weight:700;color:var(--c-muted);margin-right:4px;}
.pill-link{
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 18px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:#fff;
  font-size:14px;
  font-weight:500;
  color:var(--c-body);
  transition:border-color var(--t),color var(--t),background var(--t),transform var(--t);
}
.pill-link:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-050);transform:translateY(-1px);}
.pill-link.is-current{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600;}

/* ============ CTA ============ */
.cta{padding:0 0 88px;background:var(--c-bg);}
.cta__box{
  position:relative;
  overflow:hidden;
  background:var(--c-dark);
  border-radius:24px;
  padding:56px;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}
.cta__box::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
}
.cta__box::after{
  content:"";
  position:absolute;
  right:-120px;top:-120px;
  width:380px;height:380px;
  border:1px solid rgba(255,255,255,.06);
  border-radius:50%;
  box-shadow:0 0 0 60px rgba(255,255,255,.02);
  pointer-events:none;
}
.cta__left,.cta__right{position:relative;z-index:1;}
.cta__left h2{
  font-size:30px;
  font-weight:700;
  line-height:1.35;
  color:#fff;
  margin-bottom:22px;
}
.cta__list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:15px;
  line-height:1.7;
  color:#C6D2E2;
  margin-bottom:12px;
}
.cta__list li:last-child{margin-bottom:0;}
.cta__list svg{flex:none;margin-top:4px;color:var(--c-accent);}
.cta__right{display:flex;flex-direction:column;gap:12px;}
.cta__note{font-size:13px;color:#8FA0B8;text-align:center;margin-top:4px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--c-dark);
  color:#9AA9BE;
  padding:64px 0 32px;
}
.footer__grid{
  display:grid;
  grid-template-columns:4fr 2.4fr 2.4fr 3fr;
  gap:40px;
}
.footer__brand .logo__text{color:#fff;}
.footer__desc{font-size:13px;line-height:1.85;margin:16px 0 14px;max-width:300px;}
.footer__contact{font-size:13px;line-height:2;}
.footer__contact a{color:#fff;}
.footer__contact a:hover{color:#fff;text-decoration:underline;}
.footer__col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer__col li{font-size:13px;line-height:2.1;}
.footer__col a{color:#9AA9BE;}
.footer__col a:hover{color:#fff;}
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.08);
  margin-top:44px;
  padding-top:24px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:12px;
  line-height:1.8;
  color:#7D8DA3;
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav{gap:18px;}
  .nav__link{font-size:14px;}
  .header__actions{gap:12px;}
  .cat-hero h1{font-size:34px;}
  .cta__box{padding:44px;}
}

@media (max-width:991px){
  .topbar{display:none;}
  .nav,.header__actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .header__inner{height:60px;justify-content:space-between;gap:16px;}
  .logo__text{font-size:13px;max-width:190px;overflow:hidden;text-overflow:ellipsis;}

  .section{padding:72px 0;}
  .section__title{font-size:26px;}
  .cat-hero{padding:40px 0 48px;}
  .cat-hero__inner{grid-template-columns:1fr;gap:28px;}
  .cat-hero h1{font-size:30px;}
  .cat-hero__media{order:-1;aspect-ratio:16/9;}

  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .toc{position:static;}
  .toc__list{
    display:flex;
    gap:10px;
    overflow-x:auto;
    border-left:0;
    padding-bottom:4px;
    -webkit-overflow-scrolling:touch;
  }
  .toc__item{flex:none;}
  .toc__link{
    padding:8px 16px;
    border:1px solid var(--c-line);
    border-radius:var(--r-pill);
    background:#fff;
    font-size:14px;
    white-space:nowrap;
  }
  .toc__link::before{display:none;}
  .toc__link.is-current{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
  .toc__card{margin-top:18px;}

  .cta{padding-bottom:72px;}
  .cta__box{grid-template-columns:1fr;gap:32px;padding:36px 28px;}
  .cta__left h2{font-size:24px;}

  .footer__grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer__bottom{justify-content:center;text-align:center;}
}

@media (max-width:767px){
  .container{padding:0 16px;}
  body{font-size:16px;line-height:1.8;}
  .section{padding:56px 0;}
  .section__title{font-size:23px;}
  .section__head{margin-bottom:28px;}
  .cat-hero h1{font-size:26px;}
  .cat-hero__desc{font-size:15px;}
  .cat-hero__actions .btn{width:100%;}
  .faq-q{font-size:15px;padding:14px 16px;}
  .faq-a__inner{padding:0 16px 18px;}
  .faq-group__title{font-size:20px;}
  .catnav__inner{gap:8px;}
  .pill-link{height:34px;padding:0 14px;font-size:13px;}
  .cta__box{border-radius:18px;padding:28px 20px;}
  .cta__left h2{font-size:22px;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer__brand{grid-column:1 / -1;}
}

@media (max-width:519px){
  .logo__text{max-width:150px;}
  .tag{height:24px;padding:0 10px;font-size:11px;}
  .footer__grid{grid-template-columns:1fr;}
  .footer__col li{line-height:2;}
}

/* roulang page: category4 */
/* ============ 设计令牌 ============ */
:root{
  --c-primary:#1A5FD0;
  --c-primary-700:#1348A6;
  --c-primary-050:#EAF1FD;
  --c-accent:#0FA98F;
  --c-accent-050:#E6F7F4;
  --c-warm:#F59E2C;
  --c-warm-050:#FEF3E2;
  --c-ink:#0E1B2E;
  --c-body:#47566B;
  --c-muted:#8494A8;
  --c-bg:#F6F9FD;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F2;
  --c-dark:#0C1B33;
  --c-disabled-bg:#EDF1F7;
  --c-disabled-text:#A9B5C6;
  --c-danger:#D64545;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-xl:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,46,.05);
  --sh-2:0 6px 18px -6px rgba(14,27,46,.10);
  --sh-3:0 18px 40px -18px rgba(14,27,46,.18);
  --ease:180ms cubic-bezier(.4,0,.2,1);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-body);
  background:var(--c-bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--c-primary-700);}
button{font-family:inherit;cursor:pointer;}
svg{flex:none;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 容器 ============ */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  .container{max-width:1280px;}
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-3);background:rgba(255,255,255,.98);}
.header__inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:72px;
}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);font-weight:700;}
.logo__mark{
  width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-primary-050);
  border:1px solid rgba(26,95,208,.18);
}
.logo__text{font-size:15px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}
.nav{display:flex;align-items:center;gap:28px;margin-left:12px;}
.nav__link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--c-body);
  padding:6px 0;
  white-space:nowrap;
}
.nav__link::after{
  content:"";
  position:absolute;left:0;bottom:-2px;
  width:0;height:2px;border-radius:2px;
  background:var(--c-primary);
  transition:width var(--ease);
}
.nav__link:hover{color:var(--c-primary);}
.nav__link:hover::after{width:60%;}
.nav__link.is-active{color:var(--c-primary);font-weight:600;}
.nav__link.is-active::after{width:60%;}
.header__actions{margin-left:auto;display:flex;align-items:center;gap:18px;}
.header__contact{font-size:14px;color:var(--c-muted);}
.header__contact:hover{color:var(--c-primary);}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  align-items:center;justify-content:center;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  color:var(--c-ink);
  transition:border-color var(--ease),color var(--ease);
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;
  border:1px solid transparent;
  border-radius:var(--r-md);
  font-size:15px;font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1);}
.btn--primary:hover{background:var(--c-primary-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary);}
.btn--ghost:hover{background:rgba(26,95,208,.06);color:var(--c-primary-700);}
.btn--white{background:#fff;color:var(--c-primary);}
.btn--white:hover{background:var(--c-primary-050);color:var(--c-primary-700);transform:translateY(-1px);}
.btn--outline-white{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn--outline-white:hover{background:rgba(255,255,255,.10);color:#fff;}
.btn--sm{height:44px;padding:0 22px;font-size:14px;border-radius:var(--r-pill);}
.btn--block{width:100%;}
.btn--link{
  height:auto;padding:0;border:0;background:none;
  color:var(--c-primary);font-weight:600;
  border-bottom:1px solid currentColor;
}
.btn--link:hover{color:var(--c-primary-700);border-bottom-width:2px;}
.btn--link .arrow{transition:transform var(--ease);}
.btn--link:hover .arrow{transform:translateX(3px);}
.btn:disabled,.btn.is-disabled{background:var(--c-disabled-bg);color:var(--c-disabled-text);border-color:transparent;box-shadow:none;cursor:not-allowed;transform:none;}

/* ============ 徽章 / 标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:24px;padding:0 10px;
  border-radius:var(--r-pill);
  font-size:12px;font-weight:600;line-height:1;
  white-space:nowrap;
}
.badge--primary{background:var(--c-primary-050);color:var(--c-primary);}
.badge--accent{background:var(--c-accent-050);color:#0B8571;}
.badge--warm{background:var(--c-warm-050);color:#B26A05;}

/* ============ 页面横幅 ============ */
.page-hero{background:var(--c-bg);padding:56px 0 64px;}
.page-hero__grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--c-muted);margin-bottom:18px;
}
.breadcrumb a{color:var(--c-muted);}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C3CDDC;}
.breadcrumb .current{color:var(--c-ink);font-weight:600;}
.page-hero h1{
  font-size:46px;
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.5px;
  color:var(--c-ink);
  margin-bottom:16px;
}
.page-hero__desc{font-size:16px;line-height:1.8;color:var(--c-body);max-width:560px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;
  border-radius:var(--r-pill);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  font-size:13px;color:var(--c-body);
  transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.tag:hover{border-color:rgba(26,95,208,.35);color:var(--c-primary);background:var(--c-primary-050);}
.page-hero__media{position:relative;}
.page-hero__media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;
  border-radius:var(--r-lg);
  box-shadow:var(--sh-2);
  border:1px solid var(--c-line);
}
.hero-note{
  position:absolute;right:-8px;bottom:-18px;
  width:220px;
  background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-2);
  padding:16px 18px;
}
.hero-note strong{display:block;font-size:24px;font-weight:800;color:var(--c-ink);line-height:1.2;font-variant-numeric:tabular-nums;}
.hero-note span{display:block;font-size:13px;color:var(--c-muted);margin-top:4px;}

/* ============ 通用板块 ============ */
.section{padding:80px 0;}
.section--surface{background:var(--c-surface);}
.section--bg{background:var(--c-bg);}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section__title{position:relative;padding-left:15px;}
.section__title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;
  border-radius:2px;background:var(--c-primary);
}
.section__title::after{
  content:"";position:absolute;left:6px;top:-4px;
  width:6px;height:6px;border-radius:50%;background:var(--c-primary);
}
.section__title h2{font-size:32px;font-weight:700;line-height:1.3;color:var(--c-ink);letter-spacing:-.3px;}
.section__title p{font-size:13px;color:var(--c-muted);margin-top:6px;}
.section__aside{font-size:14px;}

/* ============ 筛选胶囊 ============ */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;
  height:36px;padding:0 16px;
  border-radius:var(--r-pill);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  font-size:14px;color:var(--c-body);
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.chip:hover{border-color:rgba(26,95,208,.35);color:var(--c-primary);}
.chip.is-active{background:var(--c-primary-050);border-color:rgba(26,95,208,.25);color:var(--c-primary);font-weight:600;}
.chip .dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.7;}

/* ============ 内容卡片栅格 ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card{
  display:flex;flex-direction:column;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  box-shadow:var(--sh-1);
  overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.card:hover{border-color:rgba(26,95,208,.18);box-shadow:var(--sh-2);transform:translateY(-2px);}
.card__media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#EDF1F7;}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.4,0,.2,1);}
.card:hover .card__media img{transform:scale(1.03);}
.card__media .badge{position:absolute;left:14px;top:14px;box-shadow:var(--sh-1);}
.card__body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card__title{
  font-size:17px;font-weight:600;line-height:1.45;color:var(--c-ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color var(--ease);
}
.card:hover .card__title{color:var(--c-primary);}
.card__excerpt{
  font-size:14px;line-height:1.7;color:var(--c-body);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.card__foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:13px;color:var(--c-muted);
}
.card__foot .more{color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:4px;}
.card__foot .more svg{transition:transform var(--ease);}
.card:hover .card__foot .more svg{transform:translateX(2px);}

/* ============ 更新说明（非对称） ============ */
.update-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:48px;
  align-items:start;
}
.stat-card{
  background:var(--c-dark);
  border-radius:var(--r-lg);
  padding:34px 32px;
  color:#fff;
  position:relative;
  overflow:hidden;
}
.stat-card::after{
  content:"";position:absolute;right:-40px;top:-40px;width:180px;height:180px;border-radius:50%;
  border:1px solid rgba(255,255,255,.08);
}
.stat-card .stat-num{font-size:40px;font-weight:800;line-height:1.1;letter-spacing:-1px;font-variant-numeric:tabular-nums;}
.stat-card .stat-label{font-size:14px;color:#9AA9BE;margin-top:8px;}
.stat-card .divider{height:1px;background:rgba(255,255,255,.12);margin:24px 0;}
.stat-card .stat-sub{display:flex;gap:28px;}
.stat-card .stat-sub div span{display:block;}
.stat-card .stat-sub .n{font-size:22px;font-weight:700;font-variant-numeric:tabular-nums;}
.stat-card .stat-sub .t{font-size:12px;color:#9AA9BE;margin-top:2px;}
.update-side h2{font-size:32px;font-weight:700;line-height:1.3;color:var(--c-ink);letter-spacing:-.3px;margin-bottom:14px;}
.update-side > p{font-size:15px;line-height:1.8;max-width:520px;margin-bottom:22px;}
.update-list{border-top:1px solid var(--c-line);}
.update-item{
  display:flex;align-items:center;gap:18px;
  padding:20px 18px;
  border-bottom:1px solid var(--c-line);
  transition:background var(--ease);
}
.update-item:hover{background:#FBFDFF;}
.update-item:hover .update-item__arrow{transform:translateX(3px);}
.update-item__icon{
  width:46px;height:46px;border-radius:12px;
  background:var(--c-primary-050);
  display:flex;align-items:center;justify-content:center;
  color:var(--c-primary);
}
.update-item__main{flex:1;min-width:0;}
.update-item__main h3{font-size:16px;font-weight:600;color:var(--c-ink);margin-bottom:4px;}
.update-item__main p{font-size:13.5px;color:var(--c-body);line-height:1.6;}
.update-item__arrow{color:var(--c-muted);transition:transform var(--ease);}

/* ============ 数据条 ============ */
.metric-row{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
}
.metric{
  padding:30px 24px;
  border-right:1px solid var(--c-line);
}
.metric:last-child{border-right:0;}
.metric .n{font-size:36px;font-weight:800;color:var(--c-primary);line-height:1.1;letter-spacing:-.5px;font-variant-numeric:tabular-nums;}
.metric .t{font-size:13px;color:var(--c-muted);margin-top:8px;line-height:1.6;}

/* ============ 分类胶囊导航 ============ */
.cat-nav{display:flex;flex-wrap:wrap;gap:12px;}
.cat-nav a{
  display:inline-flex;align-items:center;
  height:42px;padding:0 20px;
  border-radius:var(--r-pill);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  font-size:14px;color:var(--c-body);
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease);
}
.cat-nav a:hover{border-color:rgba(26,95,208,.35);color:var(--c-primary);transform:translateY(-1px);}
.cat-nav a.is-current{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600;}

/* ============ CTA ============ */
.cta-section{padding:0 0 88px;background:var(--c-bg);}
.cta-box{
  position:relative;
  background:var(--c-dark);
  border-radius:var(--r-xl);
  padding:56px;
  overflow:hidden;
  color:#fff;
}
.cta-box::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
}
.cta-box__grid{
  position:relative;
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}
.cta-box h2{font-size:32px;font-weight:700;line-height:1.3;letter-spacing:-.3px;margin-bottom:20px;}
.cta-points{display:flex;flex-direction:column;gap:12px;}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:15px;color:#D3DCEB;}
.cta-points svg{color:var(--c-accent);}
.cta-actions{display:flex;flex-direction:column;gap:12px;}
.cta-note{font-size:13px;color:#9AA9BE;line-height:1.7;margin-top:6px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-dark);color:#9AA9BE;padding:64px 0 32px;}
.footer__grid{
  display:grid;
  grid-template-columns:4fr 2.5fr 2.5fr 3fr;
  gap:40px;
}
.site-footer .logo{color:#fff;margin-bottom:16px;}
.site-footer .logo__mark{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.18);}
.footer__desc{font-size:13.5px;line-height:1.8;color:#9AA9BE;max-width:300px;}
.footer__contact{font-size:13px;line-height:2;margin-top:16px;color:#9AA9BE;}
.footer__contact a{color:#C6D2E4;}
.footer__contact a:hover{color:#fff;}
.footer__col h4{font-size:14px;color:#fff;font-weight:600;margin-bottom:16px;}
.footer__col ul{display:flex;flex-direction:column;gap:11px;}
.footer__col li{font-size:13px;line-height:1.6;}
.footer__col a{color:#9AA9BE;}
.footer__col a:hover{color:#fff;}
.footer__bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:#7C8CA4;
}

/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:120;
  background:rgba(12,27,51,.45);
  opacity:0;visibility:hidden;
  transition:opacity 220ms ease,visibility 220ms ease;
}
.drawer.is-open{opacity:1;visibility:visible;}
.drawer__panel{
  position:absolute;left:0;right:0;bottom:0;
  background:#fff;
  border-radius:20px 20px 0 0;
  padding:20px 20px calc(20px + env(safe-area-inset-bottom));
  max-height:88vh;
  overflow-y:auto;
  transform:translateY(16px);
  transition:transform 220ms ease;
  display:flex;flex-direction:column;
}
.drawer.is-open .drawer__panel{transform:translateY(0);}
.drawer__top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--c-line);}
.drawer__close{
  width:40px;height:40px;display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-sm);color:var(--c-ink);
}
.drawer__close:hover{border-color:var(--c-primary);color:var(--c-primary);}
.drawer__nav{display:flex;flex-direction:column;margin-top:8px;}
.drawer__nav a{
  position:relative;
  display:flex;align-items:center;
  height:52px;padding-left:14px;
  font-size:15px;color:var(--c-body);
  border-bottom:1px solid var(--c-line);
}
.drawer__nav a.is-active{color:var(--c-primary);font-weight:600;}
.drawer__nav a.is-active::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:2px;background:var(--c-primary);
}
.drawer__foot{margin-top:20px;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav{gap:22px;}
  .nav__link{font-size:14px;}
}
@media (max-width:991px){
  .nav,.header__actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .header__inner{height:60px;}
  .logo__text{font-size:13px;max-width:150px;overflow:hidden;text-overflow:ellipsis;}
  .page-hero{padding:40px 0 48px;}
  .page-hero__grid{grid-template-columns:1fr;gap:32px;}
  .page-hero h1{font-size:34px;}
  .page-hero__media{order:2;}
  .hero-note{display:none;}
  .section{padding:64px 0;}
  .section__title h2{font-size:26px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .update-grid{grid-template-columns:1fr;gap:32px;}
  .update-side h2{font-size:26px;}
  .metric-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .metric:nth-child(2){border-right:0;}
  .metric:nth-child(1),.metric:nth-child(2){border-bottom:1px solid var(--c-line);}
  .cta-box{padding:36px 28px;}
  .cta-box__grid{grid-template-columns:1fr;gap:28px;}
  .cta-box h2{font-size:26px;}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
  .footer__bottom{flex-direction:column;text-align:center;justify-content:center;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .page-hero h1{font-size:30px;}
  .section{padding:56px 0;}
  .section__title h2{font-size:24px;}
  .section__head{margin-bottom:26px;}
  .card-grid{grid-template-columns:1fr;}
  .metric-row{grid-template-columns:1fr;}
  .metric{border-right:0;border-bottom:1px solid var(--c-line);}
  .metric:last-child{border-bottom:0;}
  .btn{width:100%;}
  .btn--link{width:auto;}
  .btn--sm{width:auto;min-height:44px;}
  .cta-section{padding:0 0 64px;}
  .cta-box{border-radius:var(--r-lg);padding:32px 20px;}
  .cat-nav a{height:40px;padding:0 16px;font-size:13.5px;}
  .footer__grid{grid-template-columns:1fr;gap:28px;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: category5 */
:root{
  --c-primary:#1A5FD0;
  --c-primary-700:#1348A6;
  --c-primary-050:#EAF1FD;
  --c-accent:#0FA98F;
  --c-accent-050:#E6F7F4;
  --c-warm:#F59E2C;
  --c-warm-050:#FEF3E2;
  --c-ink:#0E1B2E;
  --c-body:#47566B;
  --c-muted:#8494A8;
  --c-bg:#F6F9FD;
  --c-surface:#FFFFFF;
  --c-line:#E3E9F2;
  --c-dark:#0C1B33;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:20px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,46,.05);
  --sh-2:0 6px 18px -6px rgba(14,27,46,.10);
  --sh-3:0 18px 40px -18px rgba(14,27,46,.18);
  --ease:180ms cubic-bezier(.4,0,.2,1);
  --pad-section:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--c-primary);text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease);}
a:hover{color:var(--c-primary-700);}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700;line-height:1.3;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
svg{display:block;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 顶栏信息条 ============ */
.topbar{background:var(--c-primary-050);height:32px;display:flex;align-items:center;font-size:13px;color:var(--c-primary-700);}
.topbar__inner{display:flex;align-items:center;gap:10px;width:100%;}
.topbar__dot{width:7px;height:7px;border-radius:50%;background:var(--c-accent);flex:none;}
.topbar__text{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar__link{font-size:13px;color:var(--c-primary);display:inline-flex;align-items:center;gap:4px;}
.topbar__link:hover{color:var(--c-primary-700);}
.topbar__link:hover svg{transform:translateX(2px);}
.topbar__link svg{transition:transform var(--ease);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow var(--ease),background var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-3);}
.header__inner{display:flex;align-items:center;gap:24px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none;}
.logo__mark{
  width:34px;height:34px;border-radius:10px;flex:none;
  border:1px solid var(--c-line);background:var(--c-primary-050);
  display:flex;align-items:center;justify-content:center;
}
.logo__text{font-size:15px;font-weight:700;color:var(--c-ink);letter-spacing:-.2px;transition:color var(--ease);}
.logo:hover .logo__text{color:var(--c-primary);}
.nav{display:flex;align-items:center;gap:28px;margin-left:8px;flex:1;}
.nav__link{
  position:relative;font-size:15px;font-weight:500;color:var(--c-body);
  padding:6px 0;white-space:nowrap;
}
.nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav__link:hover{color:var(--c-primary);}
.nav__link:hover::after{transform:scaleX(.6);}
.nav__link.is-active{color:var(--c-primary);font-weight:600;}
.nav__link.is-active::after{transform:scaleX(.6);}
.header__actions{display:flex;align-items:center;gap:18px;flex:none;}
.header__contact{font-size:14px;color:var(--c-muted);}
.header__contact:hover{color:var(--c-primary);}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--c-line);
  border-radius:var(--r-sm);background:var(--c-surface);color:var(--c-ink);
  align-items:center;justify-content:center;transition:border-color var(--ease),background var(--ease);
}
.nav-toggle:hover{border-color:var(--c-primary);background:var(--c-primary-050);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:var(--r-md);
  font-size:15px;font-weight:600;line-height:1;
  padding:0 26px;height:48px;cursor:pointer;
  transition:background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease),transform var(--ease);
  white-space:nowrap;
}
.btn svg{transition:transform var(--ease);}
.btn--primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary);}
.btn--primary:hover{background:var(--c-primary-700);border-color:var(--c-primary-700);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);}
.btn--secondary{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary);}
.btn--secondary:hover{background:rgba(26,95,208,.06);color:var(--c-primary-700);}
.btn--ghost{background:transparent;color:var(--c-primary);padding:0;height:auto;border:0;}
.btn--ghost:hover{color:var(--c-primary-700);}
.btn--ghost:hover svg{transform:translateX(3px);}
.btn--light{background:#fff;color:var(--c-primary);border-color:#fff;}
.btn--light:hover{background:var(--c-primary-050);color:var(--c-primary-700);transform:translateY(-1px);box-shadow:var(--sh-2);}
.btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn--outline-light:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;}
.btn--sm{height:44px;padding:0 22px;font-size:14px;}
.btn--block{width:100%;}
.btn[disabled],.btn.is-disabled{background:#EDF1F7;color:#A9B5C6;border-color:#EDF1F7;box-shadow:none;cursor:not-allowed;transform:none;}

/* ============ 移动抽屉 ============ */
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--c-surface);
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity 220ms ease,transform 220ms ease,visibility 220ms;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;height:60px;padding:0 16px;border-bottom:1px solid var(--c-line);}
.drawer__close{width:40px;height:40px;border:1px solid var(--c-line);border-radius:var(--r-sm);background:#fff;color:var(--c-ink);display:flex;align-items:center;justify-content:center;}
.drawer__close:hover{border-color:var(--c-primary);color:var(--c-primary);}
.drawer__body{flex:1;overflow:auto;padding:0 16px;}
.drawer__link{
  display:flex;align-items:center;height:52px;border-bottom:1px solid var(--c-line);
  color:var(--c-ink);font-size:16px;font-weight:500;padding-left:12px;position:relative;
}
.drawer__link::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:2px;background:transparent;}
.drawer__link.is-active{color:var(--c-primary);font-weight:700;}
.drawer__link.is-active::before{background:var(--c-primary);}
.drawer__foot{padding:16px;border-top:1px solid var(--c-line);}

/* ============ 首屏 ============ */
.page-hero{background:var(--c-bg);padding:48px 0 56px;border-bottom:1px solid var(--c-line);}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-bottom:20px;flex-wrap:wrap;}
.crumbs a{color:var(--c-muted);}
.crumbs a:hover{color:var(--c-primary);}
.crumbs span.sep{color:#C3CDDB;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.hero-pills{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px;}
.pill{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;
}
.pill--primary{background:var(--c-primary-050);color:var(--c-primary);}
.pill--accent{background:var(--c-accent-050);color:#0A8873;}
.pill--warm{background:var(--c-warm-050);color:#B26C0B;}
.page-hero h1{font-size:40px;font-weight:800;letter-spacing:-.5px;line-height:1.25;margin-bottom:16px;}
.page-hero .hero-sub{font-size:16px;color:var(--c-body);max-width:520px;margin-bottom:26px;}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;}
.hero-figure{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/11;background:#EDF1F7;}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.hero-float{
  position:absolute;right:16px;bottom:16px;background:#fff;border-radius:var(--r-md);
  box-shadow:var(--sh-2);padding:14px 18px;min-width:180px;
}
.hero-float strong{display:block;font-size:24px;color:var(--c-primary);font-variant-numeric:tabular-nums;line-height:1.2;}
.hero-float span{font-size:12px;color:var(--c-muted);}

/* ============ 通用板块 ============ */
.section{padding:var(--pad-section) 0;}
.section--surface{background:var(--c-surface);}
.section--bg{background:var(--c-bg);}
.section--tight{padding-top:64px;padding-bottom:64px;}
.section__head{margin-bottom:44px;display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.section__head--rule{position:relative;padding-bottom:18px;border-bottom:1px solid var(--c-line);}
.section__head--rule::after{content:"";position:absolute;left:0;bottom:-1px;width:120px;height:3px;background:var(--c-primary);border-radius:2px;}
.sec-title{position:relative;padding-left:16px;font-size:32px;font-weight:700;letter-spacing:-.4px;}
.sec-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--c-primary);}
.sec-title::after{content:"";position:absolute;left:-5px;top:14px;width:7px;height:7px;border-radius:50%;background:var(--c-accent);}
.sec-desc{font-size:14px;color:var(--c-muted);margin-top:10px;max-width:640px;}
.link-arrow{font-size:14px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px;}
.link-arrow svg{transition:transform var(--ease);}
.link-arrow:hover{color:var(--c-primary-700);text-decoration:underline;text-underline-offset:3px;}
.link-arrow:hover svg{transform:translateX(3px);}

/* ============ 时间轴 ============ */
.timeline{position:relative;padding-left:0;}
.timeline::before{
  content:"";position:absolute;left:23px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,var(--c-primary) 0%,#B9D1F5 100%);
  border-radius:2px;
}
.tl-item{position:relative;padding:0 0 34px 76px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:13px;top:4px;width:22px;height:22px;border-radius:50%;
  background:#fff;border:2px solid var(--c-primary);
  display:flex;align-items:center;justify-content:center;
}
.tl-dot i{display:block;width:8px;height:8px;border-radius:50%;background:var(--c-primary);}
.tl-item.is-current .tl-dot{border-color:var(--c-accent);}
.tl-item.is-current .tl-dot i{background:var(--c-accent);}
.tl-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:24px 26px;box-shadow:var(--sh-1);
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.tl-card:hover{border-color:rgba(26,95,208,.3);box-shadow:var(--sh-2);transform:translateY(-2px);}
.tl-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px;}
.tl-step{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:44px;height:26px;padding:0 10px;border-radius:var(--r-sm);
  background:rgba(26,95,208,.1);color:var(--c-primary);
  font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
}
.tl-card h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.tl-card p{font-size:14px;color:var(--c-body);line-height:1.8;}
.tl-note{
  margin-top:14px;display:flex;align-items:flex-start;gap:8px;
  font-size:13px;color:var(--c-muted);background:var(--c-bg);
  border-radius:var(--r-sm);padding:10px 14px;
}
.tl-note svg{flex:none;margin-top:3px;}

/* ============ 数据条 ============ */
.stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
}
.stat{padding:32px 24px;border-right:1px solid var(--c-line);}
.stat:last-child{border-right:0;}
.stat strong{display:block;font-size:36px;font-weight:800;color:var(--c-ink);letter-spacing:-.5px;font-variant-numeric:tabular-nums;line-height:1.1;}
.stat strong em{font-style:normal;font-size:16px;font-weight:600;color:var(--c-muted);margin-left:4px;}
.stat span{display:block;font-size:13px;color:var(--c-muted);margin-top:8px;}

/* ============ 准备清单 ============ */
.prep-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.prep-visual{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:4/3;background:#EDF1F7;}
.prep-visual img{width:100%;height:100%;object-fit:cover;}
.prep-list{display:grid;gap:16px;}
.prep-item{
  display:flex;gap:16px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-md);padding:20px 22px;box-shadow:var(--sh-1);
  transition:border-color var(--ease),box-shadow var(--ease),transform var(--ease);
}
.prep-item:hover{border-color:rgba(26,95,208,.28);box-shadow:var(--sh-2);transform:translateY(-2px);}
.prep-icon{
  width:40px;height:40px;flex:none;border-radius:10px;background:var(--c-primary-050);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);
}
.prep-item h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.prep-item p{font-size:14px;color:var(--c-body);line-height:1.75;}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.faq-aside .btn{margin-top:20px;}
.faq-list{display:grid;gap:14px;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-md);
  box-shadow:var(--sh-1);overflow:hidden;position:relative;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:transparent;transition:background var(--ease);}
.faq-item.is-open{border-color:rgba(26,95,208,.3);box-shadow:var(--sh-2);}
.faq-item.is-open::before{background:var(--c-primary);}
.faq-q{
  width:100%;background:none;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 20px;min-height:56px;font-size:16px;font-weight:600;color:var(--c-body);
  transition:color var(--ease);
}
.faq-item.is-open .faq-q{color:var(--c-ink);}
.faq-q:hover{color:var(--c-primary);}
.faq-sign{
  width:26px;height:26px;flex:none;border-radius:50%;background:var(--c-bg);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);
  font-size:16px;font-weight:600;line-height:1;transition:transform 220ms ease,background var(--ease);
}
.faq-item.is-open .faq-sign{transform:rotate(45deg);background:var(--c-primary-050);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 220ms ease;}
.faq-a p{padding:0 20px 18px;font-size:14px;color:var(--c-body);line-height:1.8;}

/* ============ 分类胶囊 ============ */
.cat-nav{padding:40px 0 0;}
.cat-nav__list{display:flex;gap:12px;flex-wrap:wrap;}
.cat-nav__list a{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;border-radius:var(--r-pill);
  background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-body);
  font-size:14px;font-weight:500;transition:all var(--ease);
}
.cat-nav__list a:hover{border-color:var(--c-primary);color:var(--c-primary);background:var(--c-primary-050);}
.cat-nav__list a.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600;}

/* ============ CTA ============ */
.cta-section{padding:0 0 var(--pad-section);}
.cta-block{
  position:relative;background:var(--c-dark);border-radius:24px;padding:56px;
  overflow:hidden;display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;
}
.cta-block::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:24px 24px;pointer-events:none;
}
.cta-block::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(255,255,255,.06);box-shadow:0 0 0 80px rgba(255,255,255,.025),0 0 0 160px rgba(255,255,255,.02);
  pointer-events:none;
}
.cta-block>*{position:relative;z-index:1;}
.cta-block h2{color:#fff;font-size:32px;font-weight:700;margin-bottom:22px;letter-spacing:-.4px;}
.cta-points{display:grid;gap:12px;}
.cta-points li{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.86);font-size:15px;}
.cta-points svg{flex:none;color:var(--c-accent);}
.cta-actions{display:grid;gap:14px;}
.cta-actions .btn{width:100%;}
.cta-note{font-size:13px;color:#9AA9BE;text-align:center;line-height:1.7;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-dark);color:#9AA9BE;padding:64px 0 32px;font-size:13px;}
.footer__grid{display:grid;grid-template-columns:4fr 2.5fr 2.5fr 3fr;gap:40px;}
.footer__brand .logo{margin-bottom:18px;}
.footer__brand .logo__mark{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);}
.footer__brand .logo__text{color:#fff;font-size:15px;}
.footer__desc{line-height:1.8;margin-bottom:18px;color:#9AA9BE;}
.footer__contact{line-height:2;color:#9AA9BE;}
.footer__contact a{color:#9AA9BE;}
.footer__contact a:hover{color:#fff;}
.footer__col h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;}
.footer__col ul{display:grid;gap:10px;}
.footer__col li{color:#9AA9BE;line-height:1.7;}
.footer__col a{color:#9AA9BE;}
.footer__col a:hover{color:#fff;}
.footer__bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;color:#7F8DA3;
}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .container{max-width:1200px;}
}
@media (max-width:1199px){
  .nav{gap:20px;}
  .nav__link{font-size:14px;}
  .nav__link:nth-child(n+5){display:none;}
  .hero-grid{grid-template-columns:6fr 6fr;gap:32px;}
  .prep-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:991px){
  :root{--pad-section:72px;}
  .nav{display:none;}
  .header__actions .header__contact{display:none;}
  .nav-toggle{display:flex;}
  .header__inner{height:64px;justify-content:space-between;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .page-hero h1{font-size:32px;}
  .page-hero{padding:36px 0 44px;}
  .faq-layout{grid-template-columns:1fr;gap:32px;}
  .cta-block{grid-template-columns:1fr;padding:40px 32px;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px;}
  .stats{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid var(--c-line);}
  .stat:last-child{border-bottom:0;}
}
@media (max-width:767px){
  :root{--pad-section:56px;}
  .container{padding:0 16px;}
  .topbar{display:none;}
  .page-hero h1{font-size:30px;}
  .sec-title{font-size:24px;}
  .cta-block h2{font-size:24px;}
  .prep-grid{grid-template-columns:1fr;}
  .hero-float{display:none;}
  .hero-btns .btn{width:100%;}
  .tl-item{padding-left:60px;}
  .timeline::before{left:17px;}
  .tl-dot{left:7px;}
  .tl-card{padding:20px 18px;}
  .footer__grid{grid-template-columns:1fr;}
  .footer__bottom{flex-direction:column;align-items:center;text-align:center;}
  .cta-actions .btn{min-height:44px;}
}
@media (max-width:519px){
  .page-hero h1{font-size:26px;}
  .stat strong{font-size:30px;}
  .cat-nav__list a{height:36px;padding:0 14px;font-size:13px;}
}