/* roulang page: index */
:root{
  --c-primary:#1657D8;
  --c-primary-strong:#0E3FA8;
  --c-primary-soft:#E8F0FF;
  --c-accent:#FF7A1A;
  --c-accent-soft:#FFF1E4;
  --c-success:#17A673;
  --c-warning:#F5A524;
  --c-danger:#E5484D;
  --c-ink:#0F172A;
  --c-body:#3B4658;
  --c-muted:#6B7688;
  --c-line:#E3E8F2;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-surface-2:#FBFCFE;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,23,42,.04),0 8px 24px -12px rgba(15,23,42,.10);
  --sh-2:0 2px 4px rgba(15,23,42,.05),0 16px 40px -20px rgba(22,87,216,.28);
  --tr:180ms cubic-bezier(.2,.7,.3,1);
  --sidebar-w:240px;
  --gap:24px;
  --sec:88px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.85;color:var(--c-body);background:var(--c-bg)}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color var(--tr)}
a:hover{color:var(--c-primary-strong)}
img{max-width:100%;display:block;border-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:3px solid var(--c-primary-soft);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0}
.section--tight{padding:calc(var(--sec) * .6) 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.sec-head h2{font-size:clamp(22px,2.2vw,30px);font-weight:700;line-height:1.35;color:var(--c-ink)}
.sec-sub{margin-top:10px;font-size:15px;color:var(--c-muted)}
.text-link{font-size:15px;font-weight:600;color:var(--c-primary);text-decoration:underline;text-underline-offset:4px;white-space:nowrap}
.text-link:hover{color:var(--c-primary-strong)}
.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-soft);color:var(--c-primary)}
.badge--hot{background:var(--c-accent-soft);color:var(--c-accent)}
.badge--ok{background:#E6F7F1;color:var(--c-success)}
.badge--warn{background:#FFF6E5;color:#B87807}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;transition:transform var(--tr),background var(--tr),box-shadow var(--tr),color var(--tr),border-color var(--tr)}
.btn--primary{background:var(--c-primary);color:#fff}
.btn--primary:hover{background:var(--c-primary-strong);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.18)}
.btn--ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary)}
.btn--ghost:hover{background:var(--c-primary-soft);transform:translateY(-2px)}
.btn--ghost:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(22,87,216,.14)}
.btn--accent{background:var(--c-accent);color:#fff}
.btn--accent:hover{background:#E96A0C;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--accent:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.2)}
.btn[disabled],.btn.is-disabled{background:#E5E9F2;color:#9AA4B6;border-color:#E5E9F2;cursor:not-allowed;transform:none;box-shadow:none}

/* 侧栏 */
.sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar-w);background:var(--c-surface);border-right:1px solid var(--c-line);display:flex;flex-direction:column;z-index:40}
.sidebar__brand{height:72px;display:flex;align-items:center;gap:10px;padding:0 16px;border-bottom:1px solid var(--c-line)}
.sidebar__brand svg{flex:none}
.brand-text{min-width:0}
.brand-text b{display:block;font-size:15px;font-weight:700;color:var(--c-ink);line-height:1.3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-text span{display:block;font-size:11px;color:var(--c-muted);line-height:1.4}
.sidebar__nav{flex:1;overflow-y:auto;padding:16px 12px}
.nav-group{margin-bottom:18px}
.nav-group:last-child{margin-bottom:0}
.nav-group__title{font-size:11px;font-weight:600;color:var(--c-muted);letter-spacing:.06em;padding:0 14px 8px}
.nav-item{position:relative;display:flex;align-items:center;height:44px;padding-left:14px;padding-right:10px;border-radius:var(--r-btn);font-size:15px;color:var(--c-body);transition:background var(--tr),color var(--tr)}
.nav-item:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.nav-item.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
.nav-item.is-active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:0 3px 3px 0;background:var(--c-primary)}
.sidebar__foot{padding:14px 16px 18px;border-top:1px solid var(--c-line)}
.sidebar__foot .btn{width:100%;font-size:14px;padding:0 12px}
.sidebar__foot p{margin-top:8px;font-size:12px;color:var(--c-muted);text-align:center;line-height:1.6}

/* 顶部栏（移动端） */
.topbar{display:none;position:sticky;top:0;z-index:45;height:56px;background:var(--c-surface);border-bottom:1px solid var(--c-line);align-items:center;justify-content:space-between;padding:0 14px;transition:box-shadow var(--tr)}
.topbar.is-stuck{box-shadow:var(--sh-1)}
.topbar__brand{display:flex;align-items:center;gap:8px;min-width:0}
.topbar__brand b{font-size:14px;font-weight:700;color:var(--c-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:56vw}
.hamburger{width:40px;height:40px;border-radius:var(--r-btn);display:flex;flex-direction:column;justify-content:center;align-items:center;gap:4px;border:1px solid var(--c-line);background:var(--c-surface)}
.hamburger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform var(--tr),opacity var(--tr)}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.drawer-mask{position:fixed;inset:0;background:rgba(15,23,42,.4);opacity:0;visibility:hidden;transition:opacity var(--tr),visibility var(--tr);z-index:48}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;background:var(--c-surface);z-index:49;transform:translateX(102%);transition:transform 240ms cubic-bezier(.2,.7,.3,1);display:flex;flex-direction:column;overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer__head{height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid var(--c-line);font-size:14px;font-weight:700;color:var(--c-ink)}
.drawer__close{width:36px;height:36px;border-radius:var(--r-btn);border:1px solid var(--c-line);font-size:16px;color:var(--c-muted);line-height:1}
.drawer__nav{padding:12px}
.drawer .nav-item{height:52px;font-size:15px}
.drawer__foot{margin-top:auto;padding:16px;border-top:1px solid var(--c-line)}
.drawer__foot .btn{width:100%}

/* 主区 */
.main{margin-left:var(--sidebar-w);min-height:100vh}

/* Hero */
.hero{position:relative;padding:64px 0 72px;background:linear-gradient(180deg,#FFFFFF 0%,var(--c-bg) 100%)}
.hero__grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero__eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 12px;border-radius:var(--r-pill);background:var(--c-primary-soft);color:var(--c-primary);font-size:13px;font-weight:600;margin-bottom:18px}
.hero h1{font-size:clamp(28px,3.2vw,44px);font-weight:700;line-height:1.28;color:var(--c-ink);letter-spacing:-.01em}
.hero__sub{margin-top:18px;font-size:17px;color:var(--c-body);max-width:520px}
.hero__badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{display:inline-flex;align-items:center;gap:6px;height:30px;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)}
.chip i{width:6px;height:6px;border-radius:50%;background:var(--c-success);display:block}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero__media{position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:16/10;background:var(--c-primary-soft)}
.hero__media img{width:100%;height:100%;object-fit:cover}
.hero__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.28) 0%,rgba(232,240,255,.55) 100%)}
.hero__media .badge{position:absolute;top:14px;right:14px;z-index:2}

/* 数据速览 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}
.stat{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);transition:transform var(--tr),box-shadow var(--tr)}
.stat:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.stat b{display:block;font-size:32px;font-weight:800;color:var(--c-primary);line-height:1.2;font-variant-numeric:tabular-nums}
.stat span{display:block;margin-top:8px;font-size:13px;color:var(--c-muted)}

/* 优惠阶梯 */
.ladder{display:flex;align-items:flex-end;gap:var(--gap)}
.tier{flex:1;background:var(--c-surface);border:1px solid var(--c-line);border-top:3px solid var(--c-primary);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform var(--tr),box-shadow var(--tr)}
.tier:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.tier--1{min-height:200px}
.tier--2{min-height:222px}
.tier--3{min-height:244px}
.tier--4{min-height:264px}
.tier__num{width:32px;height:32px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center}
.tier h3{margin-top:16px;font-size:19px;font-weight:600;color:var(--c-ink)}
.tier p{margin-top:8px;font-size:14px;color:var(--c-muted);line-height:1.7}
.tier__num-big{margin-top:auto;padding-top:18px;font-size:44px;font-weight:800;color:var(--c-accent);line-height:1;font-variant-numeric:tabular-nums}
.tier__num-big small{font-size:14px;font-weight:600;color:var(--c-muted);margin-left:6px}

/* 套餐对比 */
.cmp-matrix{border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;background:var(--c-surface);box-shadow:var(--sh-1)}
.cmp-row{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;min-height:56px;align-items:center}
.cmp-row:nth-child(even){background:var(--c-surface-2)}
.cmp-row--head{background:var(--c-primary-soft);min-height:64px}
.cmp-cell{padding:0 20px;font-size:15px;color:var(--c-body);display:flex;align-items:center;gap:8px}
.cmp-row--head .cmp-cell{font-weight:700;color:var(--c-ink)}
.cmp-cell--name{font-weight:600;color:var(--c-ink)}
.cmp-cell--plan{justify-content:center}
.cmp-cell--plan.is-rec{position:relative;background:rgba(22,87,216,.06);box-shadow:inset 0 3px 0 var(--c-primary);color:var(--c-primary);font-weight:700}
.tag-rec{display:inline-flex;align-items:center;height:20px;padding:0 8px;border-radius:var(--r-pill);background:var(--c-primary);color:#fff;font-size:11px;font-weight:600}
.ic{width:20px;height:20px;flex:none}
.ic-yes{color:var(--c-success)}
.ic-no{color:#C2CAD9}
.cmp-cards{display:none;gap:16px}

/* 限时横幅 */
.limited{background:var(--c-primary);border-radius:var(--r-card);padding:40px;display:grid;grid-template-columns:6fr 4fr;gap:32px;align-items:center;color:#fff;box-shadow:var(--sh-2)}
.limited h2{font-size:clamp(22px,2.2vw,30px);font-weight:700;color:#fff}
.limited p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.86);max-width:520px}
.countdown{display:flex;gap:10px;margin-top:22px}
.countdown span{display:inline-flex;align-items:center;justify-content:center;min-width:64px;height:52px;padding:0 10px;border-radius:12px;background:rgba(255,255,255,.16);font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:.02em}
.limited__right{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.limited__right .text-link{color:#fff;text-decoration:underline}
.limited__right .text-link:hover{color:#DCE8FF}

/* 最新信息 */
.news-top{display:grid;grid-template-columns:1.15fr 1fr;gap:var(--gap)}
.news-lead{grid-row:span 2;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform var(--tr),box-shadow var(--tr)}
.news-lead:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.news-lead__media{display:block;aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-soft)}
.news-lead__media img{width:100%;height:100%;object-fit:cover}
.news-lead__body{padding:24px;display:flex;flex-direction:column;gap:12px}
.news-lead__title{font-size:19px;font-weight:600;line-height:1.5}
.news-lead__title a{color:var(--c-ink)}
.news-lead__title a:hover{color:var(--c-primary)}
.news-lead__desc{font-size:15px;color:var(--c-body);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto}
.meta-row time,.news-mini time,.news-card time{font-size:13px;color:var(--c-muted);font-variant-numeric:tabular-nums}
.arrow-link{font-size:14px;font-weight:600;color:var(--c-primary)}
.news-mini{display:grid;grid-template-columns:120px 1fr;gap:16px;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:16px;box-shadow:var(--sh-1);transition:transform var(--tr),box-shadow var(--tr);align-items:center}
.news-mini:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.news-mini__thumb{display:block;aspect-ratio:1/1;border-radius:12px;overflow:hidden;background:var(--c-primary-soft)}
.news-mini__thumb img{width:100%;height:100%;object-fit:cover}
.news-mini__body{display:flex;flex-direction:column;gap:8px;min-width:0}
.news-mini__body h3{font-size:16px;font-weight:600;line-height:1.55}
.news-mini__body h3 a{color:var(--c-ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-mini__body h3 a:hover{color:var(--c-primary)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);margin-top:var(--gap)}
.news-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;transition:transform var(--tr),box-shadow var(--tr)}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.news-card__media{display:block;aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-soft)}
.news-card__media img{width:100%;height:100%;object-fit:cover}
.news-card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-card__body h3{font-size:16px;font-weight:600;line-height:1.55}
.news-card__body h3 a{color:var(--c-ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__body h3 a:hover{color:var(--c-primary)}
.news-card__body p{font-size:14px;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__body time{margin-top:auto}
.empty-state{height:160px;border:1px dashed var(--c-line);border-radius:var(--r-card);background:var(--c-surface);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:var(--c-muted);font-size:14px}
.empty-state svg{width:28px;height:28px;color:#C2CAD9}

/* FAQ */
.faq{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1)}
.faq-item + .faq-item{border-top:1px solid var(--c-line)}
.faq-q{width:100%;display:flex;align-items:center;gap:14px;min-height:56px;padding:12px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--c-ink);transition:background var(--tr)}
.faq-q:hover{background:var(--c-surface-2)}
.faq-q__num{flex:none;width:26px;height:26px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center}
.faq-q__text{flex:1;line-height:1.6}
.faq-q__icon{flex:none;width:18px;height:18px;position:relative;transition:transform var(--tr)}
.faq-q__icon::before,.faq-q__icon::after{content:"";position:absolute;background:var(--c-muted);border-radius:2px}
.faq-q__icon::before{left:0;right:0;top:8px;height:2px}
.faq-q__icon::after{top:0;bottom:0;left:8px;width:2px}
.faq-item.is-open .faq-q__icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms cubic-bezier(.2,.7,.3,1)}
.faq-a p{padding:0 22px 22px 62px;font-size:15px;line-height:1.85;color:var(--c-body)}

/* 表单 */
.contact{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.contact__intro h2{font-size:clamp(22px,2.2vw,30px);font-weight:700;color:var(--c-ink)}
.contact__intro > p{margin-top:14px;font-size:15px;color:var(--c-body);max-width:380px}
.point-list{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.point-list li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--c-body)}
.point-list svg{width:18px;height:18px;flex:none;margin-top:5px;color:var(--c-success)}
.form-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:28px;box-shadow:var(--sh-1)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px}
.field label i{color:var(--c-danger);font-style:normal;margin-left:2px}
.field input,.field select,.field textarea{width:100%;height:48px;padding:0 14px;border:1px solid var(--c-line);border-radius:var(--r-input);background:var(--c-surface);transition:border-color var(--tr),box-shadow var(--tr)}
.field textarea{height:112px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px var(--c-primary-soft)}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--c-danger)}
.field__err{display:none;margin-top:6px;font-size:12px;color:var(--c-danger)}
.field.has-error .field__err{display:block}
.form-card .btn{width:100%}
.form-note{margin-top:12px;font-size:12px;color:var(--c-muted);text-align:center}
.form-success{display:none;margin-top:16px;padding:14px 16px;border:1px solid var(--c-success);border-radius:var(--r-input);background:#F1FBF7;color:#0F7C56;font-size:14px}
.form-success.is-on{display:block}

/* 页脚 */
.footer{margin-left:var(--sidebar-w);background:var(--c-ink);color:#AEB8C8;padding:64px 0 0}
.footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px}
.footer h3{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px}
.footer__brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer__brand b{font-size:15px;font-weight:700;color:#fff}
.footer p,.footer li{font-size:13px;line-height:1.9}
.footer ul li a{color:#AEB8C8}
.footer ul li a:hover{color:#fff}
.footer__bottom{margin-top:48px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12px;color:#8592A6}

/* 响应式 */
@media (min-width:1440px){
  :root{--sidebar-w:248px}
  .container{max-width:1280px}
}
@media (max-width:1199px){
  :root{--sidebar-w:220px;--gap:20px;--sec:64px}
  .hero__grid{gap:32px}
}
@media (max-width:1023px){
  :root{--gap:20px;--sec:64px}
  .sidebar{display:none}
  .topbar{display:flex}
  .main,.footer{margin-left:0}
  .stats{grid-template-columns:repeat(2,1fr)}
  .ladder{flex-direction:column;align-items:stretch;position:relative;gap:16px;padding-left:22px}
  .ladder::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:2px;background:var(--c-primary-soft)}
  .tier{min-height:0!important;position:relative}
  .tier::before{content:"";position:absolute;left:-22px;top:28px;width:10px;height:10px;border-radius:50%;background:var(--c-primary);transform:translateX(-1px)}
  .news-top{grid-template-columns:1fr}
  .news-lead{grid-row:auto}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .contact{grid-template-columns:1fr;gap:32px}
  .limited{grid-template-columns:1fr;padding:32px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  :root{--gap:16px;--sec:44px}
  .container{padding:0 16px}
  .hero{padding:40px 0 48px}
  .hero__grid{grid-template-columns:1fr;gap:28px}
  .hero__sub{font-size:16px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px}
  .cmp-matrix{display:none}
  .cmp-cards{display:grid;grid-template-columns:1fr}
  .cmp-card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1)}
  .cmp-card.is-rec{border-color:var(--c-primary);box-shadow:inset 0 3px 0 var(--c-primary),var(--sh-1)}
  .cmp-card h3{font-size:17px;font-weight:700;color:var(--c-ink);display:flex;align-items:center;justify-content:space-between;gap:10px}
  .cmp-card ul{margin-top:14px;display:flex;flex-direction:column;gap:10px}
  .cmp-card li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-body)}
  .news-grid{grid-template-columns:1fr}
  .news-mini{grid-template-columns:96px 1fr}
  .faq-a p{padding:0 18px 20px 18px}
  .footer__grid{grid-template-columns:1fr}
  .footer{padding-top:44px}
}
@media (max-width:479px){
  .stats{grid-template-columns:1fr}
  .hero__actions .btn{width:100%}
  .countdown span{min-width:0;flex:1;font-size:22px;height:46px}
  .tier__num-big{font-size:32px}
  .news-mini{grid-template-columns:1fr}
  .news-mini__thumb{aspect-ratio:16/10}
}

/* roulang page: article */
:root{
  --c-primary:#1657D8;
  --c-primary-strong:#0E3FA8;
  --c-primary-soft:#E8F0FF;
  --c-accent:#FF7A1A;
  --c-accent-soft:#FFF1E4;
  --c-success:#17A673;
  --c-warning:#F5A524;
  --c-danger:#E5484D;
  --c-ink:#0F172A;
  --c-body:#3B4658;
  --c-muted:#6B7688;
  --c-line:#E3E8F2;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-surface-2:#FBFCFE;
  --sh-1:0 1px 2px rgba(15,23,42,.04),0 8px 24px -12px rgba(15,23,42,.10);
  --sh-2:0 2px 4px rgba(15,23,42,.05),0 16px 40px -20px rgba(22,87,216,.28);
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-pill:999px;
  --sidebar-w:240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-body);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--c-primary);text-decoration:none;transition:color .18s cubic-bezier(.2,.7,.3,1)}
a:hover{color:var(--c-primary-strong)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700}
p{margin:0 0 1.25em}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 1.25em;padding-left:1.35em}
li{margin:.35em 0}
time{font-variant-numeric:tabular-nums}
:focus-visible{outline:3px solid var(--c-primary-soft);outline-offset:2px;border-radius:4px}

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

/* ---------- 布局骨架 ---------- */
.layout{display:flex;align-items:flex-start;min-height:100vh}
.main{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}

/* ---------- 侧栏 ---------- */
.sidebar{
  display:none;
  flex:0 0 var(--sidebar-w);
  width:var(--sidebar-w);
  height:100vh;
  position:sticky;
  top:0;
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  flex-direction:column;
  overflow-y:auto;
  z-index:30;
}
.sidebar__brand{
  height:72px;
  display:flex;
  align-items:center;
  gap:10px;
  padding:0 16px;
  border-bottom:1px solid var(--c-line);
  flex:0 0 auto;
}
.brand__text{display:flex;flex-direction:column;min-width:0;line-height:1.3}
.brand__name{font-size:15px;font-weight:700;color:var(--c-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand__sub{font-size:11px;color:var(--c-muted)}
.sidebar__nav{padding:14px 10px;flex:1 1 auto}
.nav-group{margin-bottom:16px}
.nav-group:last-child{margin-bottom:0}
.nav-group__title{
  margin:0 0 6px;
  padding-left:14px;
  font-size:11px;
  font-weight:600;
  letter-spacing:.06em;
  color:var(--c-muted);
}
.nav-item{
  display:flex;
  align-items:center;
  height:44px;
  padding:0 14px;
  border-radius:var(--r-btn);
  font-size:15px;
  color:var(--c-body);
  position:relative;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.nav-item:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.nav-item.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.sidebar__foot{
  padding:14px 14px 18px;
  border-top:1px solid var(--c-line);
  flex:0 0 auto;
}
.sidebar__note{margin:10px 0 0;font-size:12px;color:var(--c-muted);line-height:1.6}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:all .18s cubic-bezier(.2,.7,.3,1);
  text-align:center;
}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-1)}
.btn--primary:hover{background:var(--c-primary-strong);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.18)}
.btn--ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary)}
.btn--ghost:hover{background:var(--c-primary-soft)}
.btn--accent{background:var(--c-accent);color:#fff}
.btn--accent:hover{background:#E86B0F;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--block{display:flex;width:100%;padding:0 12px}
.btn[disabled],.btn.is-disabled{background:#E5E9F2;color:#9AA4B6;border-color:#E5E9F2;cursor:not-allowed;box-shadow:none;transform:none}
.link-more{font-size:14px;font-weight:600;text-decoration:underline;text-underline-offset:4px}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  height:56px;
  padding:0 16px;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  position:sticky;
  top:0;
  z-index:40;
  transition:box-shadow .18s ease;
}
.topbar.is-scrolled{box-shadow:var(--sh-1)}
.topbar__brand{display:flex;align-items:center;gap:8px;min-width:0;color:var(--c-ink);font-weight:700;font-size:15px}
.topbar__brand span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hamburger{
  width:40px;height:40px;flex:0 0 40px;
  display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:4px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-btn);cursor:pointer;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .18s ease}
.hamburger:hover{background:var(--c-primary-soft);border-color:var(--c-primary-soft)}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;
  background:var(--c-surface);z-index:60;
  transform:translateX(102%);transition:transform .24s cubic-bezier(.2,.7,.3,1);
  display:flex;flex-direction:column;overflow-y:auto;
  box-shadow:var(--sh-2);
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 16px;border-bottom:1px solid var(--c-line);flex:0 0 auto;
}
.drawer__head b{font-size:15px;color:var(--c-ink)}
.drawer__close{
  width:34px;height:34px;border-radius:var(--r-btn);border:1px solid var(--c-line);
  background:var(--c-surface);cursor:pointer;font-size:16px;line-height:1;color:var(--c-muted)
}
.drawer__close:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.drawer__nav{padding:12px 12px;flex:1 1 auto}
.drawer .nav-item{height:52px;font-size:15px}
.drawer__foot{padding:12px 14px 20px;border-top:1px solid var(--c-line)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.4);
  opacity:0;visibility:hidden;transition:opacity .2s ease;z-index:55;
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ---------- 文章头部 ---------- */
.article-banner{
  position:relative;
  background-image:linear-gradient(90deg,rgba(232,240,255,.94) 0%,rgba(255,255,255,.72) 62%,rgba(255,255,255,.5) 100%),url("/assets/images/backpic/back-2.png");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--c-line);
}
.article-banner__inner{padding:34px 0 30px;max-width:820px}
.article-banner__tag{
  display:inline-block;
  font-size:12px;font-weight:600;color:var(--c-primary);
  background:rgba(255,255,255,.86);border:1px solid rgba(22,87,216,.18);
  border-radius:var(--r-pill);height:24px;line-height:22px;padding:0 12px;
}
.article-banner__text{margin:12px 0 0;font-size:15px;color:var(--c-body);max-width:560px}

.crumb{font-size:13px;color:var(--c-muted);margin:22px 0 16px;line-height:1.7}
.crumb a{color:var(--c-primary)}
.crumb span.sep{margin:0 8px;color:#B6BFCF}
.crumb em{font-style:normal;color:var(--c-muted)}

/* ---------- 文章主体 ---------- */
.article{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  padding:34px 36px 30px;
  overflow:hidden;
}
.article-head{border-bottom:1px solid var(--c-line);padding-bottom:20px;margin-bottom:26px}
.article-title{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.38;
  font-weight:700;
  letter-spacing:-.01em;
  word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;
  margin-top:14px;font-size:13px;color:var(--c-muted);
}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1;
}
.badge--cat{background:var(--c-primary-soft);color:var(--c-primary)}
.badge--soft{background:var(--c-accent-soft);color:#B4510A}
.badge--ok{background:rgba(23,166,115,.12);color:#11805A}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:#C6CEDC;display:inline-block}

.article-body{max-width:760px;font-size:16px;line-height:1.9;color:var(--c-body);word-break:break-word}
.article-body p{margin:0 0 1.25em}
.article-body h2{
  position:relative;
  font-size:clamp(20px,2vw,24px);line-height:1.4;font-weight:700;
  margin:40px 0 16px;padding-left:14px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;
  border-radius:3px;background:var(--c-primary);
}
.article-body h3{font-size:20px;font-weight:600;margin:30px 0 12px}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.25em;padding-left:1.3em}
.article-body ul li::marker{color:var(--c-primary)}
.article-body ol li::marker{color:var(--c-primary);font-weight:600}
.article-body a{text-decoration:underline;text-underline-offset:4px}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;
  background:var(--c-primary-soft);
  border-left:3px solid var(--c-primary);
  border-radius:12px;
  color:#22335A;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{margin:22px auto;border-radius:var(--r-img);box-shadow:var(--sh-1)}
.article-body figure{margin:22px 0}
.article-body figcaption,.article-body .caption{
  margin-top:8px;text-align:center;font-size:13px;color:var(--c-muted);line-height:1.6;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:22px 0;font-size:14px;
  border:1px solid var(--c-line);border-radius:var(--r-img);overflow:hidden;
}
.article-body thead th{
  background:var(--c-primary-soft);color:#173C86;font-weight:600;text-align:left;
  padding:12px 14px;border-bottom:1px solid #D6E2FA;
}
.article-body tbody td{padding:12px 14px;border-bottom:1px solid var(--c-line);color:var(--c-body)}
.article-body tbody tr:nth-child(even){background:var(--c-surface-2)}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body code{
  background:#EEF2F9;border-radius:6px;padding:2px 6px;font-size:14px;color:#22335A;
}
.article-body hr{border:0;border-top:1px solid var(--c-line);margin:34px 0}

.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  min-height:220px;border:1px dashed #C9D5EA;border-radius:var(--r-card);
  background:var(--c-surface-2);text-align:center;padding:28px 20px;
}
.empty-state__icon{
  width:44px;height:44px;border-radius:50%;background:var(--c-primary-soft);
  display:flex;align-items:center;justify-content:center;margin-bottom:12px;
}
.empty-state h3{font-size:16px;margin-bottom:6px}
.empty-state p{font-size:14px;color:var(--c-muted);margin-bottom:14px}

.article-foot{
  max-width:760px;
  margin-top:32px;padding-top:20px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
}
.tag-row{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-primary-soft);
  color:var(--c-primary);font-size:12px;font-weight:600;
}
.back-link{font-size:14px;font-weight:600;text-decoration:underline;text-underline-offset:4px}

/* ---------- 板块通用 ---------- */
.section{margin-top:64px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px}
.section-head h2{font-size:clamp(20px,2.1vw,26px);line-height:1.35}
.section-head p{margin:6px 0 0;font-size:14px;color:var(--c-muted)}

/* ---------- 相关推荐卡片 ---------- */
.post-list{display:grid;grid-template-columns:1fr;gap:16px}
.post-card{
  display:flex;gap:16px;align-items:stretch;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:14px;box-shadow:var(--sh-1);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s cubic-bezier(.2,.7,.3,1);
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.post-card__thumb{
  flex:0 0 200px;width:200px;aspect-ratio:16/10;border-radius:var(--r-img);
  overflow:hidden;background:var(--c-primary-soft);
}
.post-card__thumb img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-img)}
.post-card__body{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.post-card__title{font-size:16px;font-weight:600;line-height:1.5;margin:8px 0 6px}
.post-card__title a{color:var(--c-ink)}
.post-card__title a:hover{color:var(--c-primary)}
.post-card__excerpt{
  font-size:14px;line-height:1.75;color:var(--c-muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card__meta{margin-top:auto;padding-top:10px;font-size:13px;color:var(--c-muted);display:flex;gap:12px;flex-wrap:wrap}

/* ---------- CTA 条 ---------- */
.cta-bar{
  margin-top:64px;
  background:linear-gradient(120deg,#1657D8 0%,#0E3FA8 100%);
  border-radius:var(--r-card);
  padding:30px 32px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  box-shadow:var(--sh-2);
}
.cta-bar h2{color:#fff;font-size:clamp(19px,2vw,24px);line-height:1.4}
.cta-bar p{color:rgba(255,255,255,.86);font-size:14px;margin:8px 0 0;max-width:620px}
.cta-bar .btn--ghost{background:#fff;border-color:#fff;color:var(--c-primary)}
.cta-bar .btn--ghost:hover{background:var(--c-primary-soft);transform:translateY(-2px)}

/* ---------- 页脚 ---------- */
.footer{
  margin-top:80px;
  background:var(--c-surface);
  border-top:1px solid var(--c-line);
  padding:56px 0 0;
}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer__brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer__brand b{font-size:16px;color:var(--c-ink)}
.footer p{font-size:13px;color:var(--c-muted);margin:0 0 6px;line-height:1.75}
.footer h3{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--c-ink)}
.footer ul{list-style:none;margin:0;padding:0}
.footer li{font-size:13px;color:var(--c-muted);margin:0 0 10px;line-height:1.6}
.footer li a{color:var(--c-muted)}
.footer li a:hover{color:var(--c-primary)}
.footer__bottom{
  margin-top:40px;padding:18px 0;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:12px;color:var(--c-muted);
}

/* ---------- 断点 ---------- */
@media (min-width:1440px){
  :root{--sidebar-w:248px}
  .container{max-width:1280px}
}
@media (min-width:1024px){
  .topbar{display:none}
  .sidebar{display:flex}
  .drawer,.drawer-mask{display:none}
  .post-list{grid-template-columns:1fr}
}
@media (min-width:768px) and (max-width:1023px){
  .post-list{grid-template-columns:repeat(2,1fr)}
  .post-card{flex-direction:column}
  .post-card__thumb{flex:none;width:100%;aspect-ratio:16/10}
}
@media (max-width:1023px){
  .section{margin-top:64px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .article{padding:22px 18px 24px;border-radius:var(--r-card)}
  .article-banner__inner{padding:24px 0 22px}
  .section{margin-top:48px}
  .cta-bar{padding:24px 20px;border-radius:var(--r-card)}
  .cta-bar .btn{width:100%}
  .post-list{grid-template-columns:1fr;gap:14px}
  .post-card{flex-direction:column;gap:12px}
  .post-card__thumb{flex:none;width:100%;aspect-ratio:16/10}
  .footer{padding-top:44px;margin-top:56px}
  .footer__grid{grid-template-columns:1fr;gap:26px}
  .article-body h2{margin-top:32px}
}
@media (max-width:479px){
  .article-title{font-size:24px}
  .article-meta{font-size:12px}
  .crumb{font-size:12px}
  .footer__bottom{flex-direction:column}
}

/* roulang page: category1 */
:root{
  --c-primary:#1657D8;
  --c-primary-strong:#0E3FA8;
  --c-primary-soft:#E8F0FF;
  --c-accent:#FF7A1A;
  --c-accent-soft:#FFF1E4;
  --c-success:#17A673;
  --c-warning:#F5A524;
  --c-danger:#E5484D;
  --c-ink:#0F172A;
  --c-body:#3B4658;
  --c-muted:#6B7688;
  --c-line:#E3E8F2;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-surface-2:#FBFCFE;
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:14px;
  --r-badge:999px;
  --sh-1:0 1px 2px rgba(15,23,42,.04),0 8px 24px -12px rgba(15,23,42,.10);
  --sh-2:0 2px 4px rgba(15,23,42,.05),0 16px 40px -20px rgba(22,87,216,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-section:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-body);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--c-primary-strong);}
img{max-width:100%;display:block;}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:3px solid var(--c-primary-soft);outline-offset:2px;border-radius:8px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 28px;}
@media (min-width:1440px){.container{max-width:1280px;}}

/* ---------- 布局骨架 ---------- */
.app{display:flex;min-height:100vh;}
.main{flex:1;min-width:0;display:flex;flex-direction:column;}

/* ---------- 左侧导航 ---------- */
.sidebar{
  width:248px;flex:0 0 248px;
  position:sticky;top:0;height:100vh;
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;
  z-index:70;
}
.sidebar__brand{
  height:72px;flex:0 0 72px;
  display:flex;align-items:center;gap:10px;
  padding:0 18px;
  border-bottom:1px solid var(--c-line);
}
.sidebar__brand svg{flex:0 0 auto;}
.sidebar__brand b{display:block;font-size:15px;font-weight:700;color:var(--c-ink);line-height:1.3;letter-spacing:.01em;}
.sidebar__brand span{display:block;font-size:11px;color:var(--c-muted);line-height:1.5;}
.sidebar__nav{flex:1;overflow-y:auto;padding:16px 12px 8px;}
.nav-group + .nav-group{margin-top:20px;}
.nav-group__title{
  font-size:11px;font-weight:600;letter-spacing:.08em;
  color:var(--c-muted);padding:0 10px;margin-bottom:8px;
}
.nav-item{
  position:relative;display:flex;align-items:center;
  height:44px;padding:0 14px;border-radius:10px;
  font-size:15px;color:var(--c-body);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-item:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.nav-item.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;
  border-radius:0 3px 3px 0;background:var(--c-primary);
}
.sidebar__foot{padding:14px 16px 20px;border-top:1px solid var(--c-line);}
.sidebar__foot .btn{width:100%;}
.sidebar__foot p{font-size:12px;color:var(--c-muted);text-align:center;margin-top:10px;line-height:1.6;}

/* ---------- 移动端顶部栏 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:80;
  height:56px;align-items:center;justify-content:space-between;gap:10px;
  padding:0 14px;background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s var(--ease);
}
.topbar.is-scrolled{box-shadow:var(--sh-1);}
.topbar__brand{display:flex;align-items:center;gap:8px;min-width:0;}
.topbar__brand b{
  font-size:15px;font-weight:700;color:var(--c-ink);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:60vw;
}
.burger{
  width:40px;height:40px;flex:0 0 40px;border-radius:10px;
  display:grid;place-items:center;background:var(--c-primary-soft);
  transition:background .18s var(--ease);
}
.burger:hover{background:#D8E6FF;}

/* ---------- 抽屉 ---------- */
.drawer{position:fixed;inset:0;z-index:120;visibility:hidden;pointer-events:none;}
.drawer.is-open{visibility:visible;pointer-events:auto;}
.drawer__mask{
  position:absolute;inset:0;background:rgba(15,23,42,.4);
  opacity:0;transition:opacity .22s var(--ease);
}
.drawer.is-open .drawer__mask{opacity:1;}
.drawer__panel{
  position:absolute;right:0;top:0;height:100%;
  width:84vw;max-width:360px;background:var(--c-surface);
  display:flex;flex-direction:column;
  transform:translateX(100%);
  transition:transform .26s var(--ease);
  box-shadow:-12px 0 40px -20px rgba(15,23,42,.4);
}
.drawer.is-open .drawer__panel{transform:none;}
.drawer__head{
  height:56px;flex:0 0 56px;display:flex;align-items:center;justify-content:space-between;
  padding:0 14px;border-bottom:1px solid var(--c-line);
}
.drawer__head b{font-size:15px;color:var(--c-ink);}
.drawer__close{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:var(--c-surface-2);}
.drawer__body{flex:1;overflow-y:auto;padding:14px 12px;}
.drawer__body .nav-item{height:52px;}
.drawer__foot{padding:14px 16px 20px;border-top:1px solid var(--c-line);}
.drawer__foot .btn{width:100%;}
.drawer__foot p{font-size:12px;color:var(--c-muted);text-align:center;margin-top:8px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:0 1px 2px rgba(15,23,42,.06);}
.btn--primary:hover{background:var(--c-primary-strong);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);box-shadow:inset 0 3px 8px rgba(0,0,0,.18);}
.btn--ghost{background:var(--c-surface);color:var(--c-primary);border:1px solid var(--c-primary);}
.btn--ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-strong);transform:translateY(-2px);}
.btn--ghost:active{transform:translateY(0);box-shadow:inset 0 3px 8px rgba(22,87,216,.12);}
.btn--light{background:#fff;color:var(--c-primary);}
.btn--light:hover{background:var(--c-primary-soft);color:var(--c-primary-strong);transform:translateY(-2px);box-shadow:0 12px 28px -16px rgba(15,23,42,.6);}
.btn--accent{background:var(--c-accent);color:#fff;}
.btn--accent:hover{background:#EA6A0C;color:#fff;transform:translateY(-2px);box-shadow:0 14px 30px -16px rgba(255,122,26,.9);}
.btn:disabled,.btn[disabled]{background:#E5E9F2;color:#9AA4B6;border-color:#E5E9F2;cursor:not-allowed;box-shadow:none;transform:none;}
.link-arrow{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;}
.link-arrow svg{transition:transform .18s var(--ease);}
.link-arrow:hover svg{transform:translateX(3px);}

/* ---------- 面包屑 ---------- */
.crumbs{font-size:13px;color:var(--c-muted);display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:26px 0 16px;}
.crumbs a{color:var(--c-primary);}
.crumbs span.sep{color:#B6BFCD;}
.crumbs span.current{color:var(--c-muted);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;border-radius:20px;
  padding:46px 44px;
  background-image:linear-gradient(96deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.86) 45%,rgba(232,240,255,.70) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-1);
}
.hero__inner{max-width:760px;}
.hero h1{
  font-size:clamp(28px,3.2vw,44px);
  font-weight:700;line-height:1.28;color:var(--c-ink);letter-spacing:-.01em;
}
.hero__sub{font-size:16px;line-height:1.85;color:var(--c-body);margin-top:16px;max-width:640px;}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
.chip{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;
  border-radius:var(--r-badge);font-size:12px;font-weight:600;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.chip--accent{background:var(--c-accent-soft);color:#C2530A;}
.chip--ok{background:#E4F7F0;color:var(--c-success);}
.hero__acts{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}

/* ---------- 板块 ---------- */
.section{padding:var(--sp-section) 0 0;}
.section:last-of-type{padding-bottom:0;}
.section__head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;}
.section__head h2{
  font-size:clamp(22px,2.2vw,30px);font-weight:700;line-height:1.35;color:var(--c-ink);letter-spacing:-.01em;
}
.section__head p{font-size:15px;color:var(--c-muted);margin-top:10px;max-width:640px;}
.section--band{padding-top:var(--sp-section);}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--sh-1);
}
.stat b{display:block;font-size:32px;font-weight:800;color:var(--c-primary);line-height:1.2;font-variant-numeric:tabular-nums;}
.stat span{display:block;font-size:13px;color:var(--c-muted);margin-top:6px;}

/* ---------- 图标卡网格 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.ico-card{
  position:relative;overflow:hidden;
  display:flex;flex-direction:column;gap:12px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 24px 24px;box-shadow:var(--sh-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.ico-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:var(--c-primary);opacity:0;transition:opacity .18s var(--ease);
}
.ico-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#CFDDF7;}
.ico-card:hover::before{opacity:1;}
.ico-card__ico{
  width:40px;height:40px;border-radius:var(--r-badge);
  background:var(--c-primary-soft);color:var(--c-primary);
  display:grid;place-items:center;flex:0 0 40px;
}
.ico-card h3{font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.5;}
.ico-card p{font-size:14px;color:var(--c-muted);line-height:1.75;flex:1;}
.ico-card .link-arrow{margin-top:2px;}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:center;}
.figure{margin:0;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1);border:1px solid var(--c-line);background:var(--c-surface);}
.figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.figure figcaption{font-size:13px;color:var(--c-muted);padding:10px 16px;background:var(--c-surface);}
.check-list{display:flex;flex-direction:column;gap:18px;}
.check-list li{display:flex;gap:14px;align-items:flex-start;}
.check-list .num{
  flex:0 0 32px;width:32px;height:32px;border-radius:var(--r-badge);
  background:var(--c-primary-soft);color:var(--c-primary);
  display:grid;place-items:center;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
}
.check-list h3{font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.55;}
.check-list p{font-size:14px;color:var(--c-muted);line-height:1.75;margin-top:2px;}

/* ---------- CTA 横幅 ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
  background:linear-gradient(118deg,var(--c-primary) 0%,var(--c-primary-strong) 100%);
  color:#fff;border-radius:20px;padding:36px 40px;box-shadow:var(--sh-2);
}
.cta-band h2{font-size:clamp(20px,2vw,26px);font-weight:700;line-height:1.4;color:#fff;}
.cta-band p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.85);margin-top:10px;max-width:620px;}
.cta-band__acts{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto;}

/* ---------- FAQ ---------- */
.faq{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--c-line);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;
  min-height:56px;padding:14px 22px;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);
  transition:background .18s var(--ease);
}
.faq-q:hover{background:var(--c-surface-2);}
.faq-no{
  flex:0 0 26px;width:26px;height:26px;border-radius:var(--r-badge);
  background:var(--c-primary-soft);color:var(--c-primary);
  display:grid;place-items:center;font-size:12px;font-weight:700;font-variant-numeric:tabular-nums;
}
.faq-q span.txt{flex:1;}
.faq-icon{
  flex:0 0 22px;width:22px;height:22px;position:relative;
  transition:transform .24s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-muted);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--c-primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-a__inner{padding:0 22px 22px 62px;font-size:15px;line-height:1.85;color:var(--c-body);}

/* ---------- 页脚 ---------- */
.footer{margin-top:var(--sp-section);background:var(--c-surface);border-top:1px solid var(--c-line);}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding:56px 0 36px;}
.footer__brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer__brand b{font-size:15px;color:var(--c-ink);font-weight:700;}
.footer p{font-size:13px;line-height:1.8;color:var(--c-muted);max-width:320px;}
.footer h3{font-size:14px;font-weight:700;color:var(--c-ink);margin-bottom:14px;}
.footer ul{display:flex;flex-direction:column;gap:10px;}
.footer li{font-size:13px;color:var(--c-muted);}
.footer li a{font-size:13px;color:var(--c-muted);}
.footer li a:hover{color:var(--c-primary);}
.footer__bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--c-line);padding:18px 0 24px;
  font-size:12px;color:var(--c-muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .sidebar{width:240px;flex:0 0 240px;}
}
@media (max-width:1199px){
  .sidebar{width:220px;flex:0 0 220px;}
  .grid-3{grid-template-columns:repeat(3,1fr);gap:20px;}
  .stats{grid-template-columns:repeat(4,1fr);gap:20px;}
}
@media (max-width:1023px){
  .sidebar{display:none;}
  .topbar{display:flex;}
  :root{--sp-section:64px;}
  .container{padding:0 22px;}
  .grid-3{grid-template-columns:repeat(2,1fr);gap:20px;}
  .stats{grid-template-columns:repeat(2,1fr);gap:20px;}
  .split{grid-template-columns:1fr;gap:24px;}
  .hero{padding:36px 30px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 28px;}
  .footer__grid{grid-template-columns:repeat(2,1fr);gap:28px;padding:44px 0 28px;}
}
@media (max-width:767px){
  :root{--sp-section:44px;}
  .container{padding:0 16px;}
  .grid-3{grid-template-columns:1fr;gap:16px;}
  .stats{grid-template-columns:repeat(2,1fr);gap:16px;}
  .hero{padding:28px 22px;border-radius:16px;}
  .hero__sub{font-size:15px;}
  .hero__acts{gap:12px;}
  .hero__acts .btn{flex:1 1 100%;}
  .stat b{font-size:26px;}
  .faq-a__inner{padding:0 18px 20px 18px;}
  .faq-q{padding:14px 18px;font-size:15px;}
  .cta-band{padding:26px 20px;border-radius:16px;}
  .cta-band__acts{width:100%;}
  .cta-band__acts .btn{flex:1 1 100%;}
  .footer__grid{grid-template-columns:1fr;gap:26px;}
}
@media (max-width:479px){
  .btn{width:100%;}
  .link-arrow{font-size:13px;}
  .stat b{font-size:24px;}
  .stat{padding:18px;}
  .ico-card{padding:22px 18px;}
  body{font-size:16px;}
}

/* roulang page: category2 */
:root{
  --c-primary:#1657D8;
  --c-primary-strong:#0E3FA8;
  --c-primary-soft:#E8F0FF;
  --c-accent:#FF7A1A;
  --c-accent-soft:#FFF1E4;
  --c-success:#17A673;
  --c-warning:#F5A524;
  --c-danger:#E5484D;
  --c-ink:#0F172A;
  --c-body:#3B4658;
  --c-muted:#6B7688;
  --c-line:#E3E8F2;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-surface-2:#FBFCFE;
  --sh-1:0 1px 2px rgba(15,23,42,.04),0 8px 24px -12px rgba(15,23,42,.10);
  --sh-2:0 2px 4px rgba(15,23,42,.05),0 16px 40px -20px rgba(22,87,216,.28);
  --r-card:16px;
  --r-btn:10px;
  --r-input:10px;
  --r-img:14px;
  --r-pill:999px;
  --container:1200px;
  --sidebar-w:248px;
  --sp-section:88px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--c-body);
  background:var(--c-bg);
  -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:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid var(--c-primary-soft);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- 布局骨架 ---------- */
.layout{display:flex;min-height:100vh}
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  display:flex;flex-direction:column;
  background:var(--c-surface);border-right:1px solid var(--c-line);z-index:60;
}
.page{margin-left:var(--sidebar-w);flex:1 1 auto;min-width:0;display:flex;flex-direction:column}

/* ---------- 侧栏品牌 ---------- */
.sidebar__brand{
  display:flex;align-items:center;gap:10px;height:72px;flex:0 0 auto;
  padding:0 16px;border-bottom:1px solid var(--c-line);
}
.sidebar__brand-text b{display:block;font-size:15px;font-weight:700;color:var(--c-ink);line-height:1.25}
.sidebar__brand-text span{display:block;font-size:11px;color:var(--c-muted);line-height:1.4;margin-top:2px}

/* ---------- 侧栏导航 ---------- */
.sidebar__nav{flex:1 1 auto;overflow-y:auto;padding:16px 12px 8px}
.nav-group+.nav-group{margin-top:18px}
.nav-group__title{
  font-size:11px;font-weight:600;letter-spacing:.08em;color:var(--c-muted);
  padding-left:12px;margin-bottom:8px;
}
.nav-item{
  position:relative;display:flex;align-items:center;height:44px;
  padding:0 12px 0 14px;border-radius:10px;
  font-size:15px;color:var(--c-body);
  transition:background-color 180ms var(--ease),color 180ms var(--ease);
}
.nav-item:hover{background:var(--c-primary-soft);color:var(--c-primary-strong)}
.nav-item.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
.nav-item.is-active::before{
  content:"";position:absolute;left:4px;top:12px;bottom:12px;width:3px;
  border-radius:2px;background:var(--c-primary);
}
.sidebar__foot{flex:0 0 auto;padding:14px 16px 18px;border-top:1px solid var(--c-line)}
.sidebar__foot p{font-size:12px;color:var(--c-muted);margin-top:10px;text-align:center;line-height:1.6}

/* ---------- 移动端顶栏与抽屉 ---------- */
.topbar{
  display:none;position:sticky;top:0;z-index:70;height:56px;
  align-items:center;justify-content:space-between;
  padding:0 16px;background:var(--c-surface);border-bottom:1px solid var(--c-line);
}
.topbar__brand{display:flex;align-items:center;gap:8px;min-width:0}
.topbar__brand span{
  font-size:15px;font-weight:700;color:var(--c-ink);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.topbar__menu{
  width:40px;height:40px;flex:0 0 auto;border:1px solid var(--c-line);background:var(--c-surface);
  border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.topbar__menu span{display:block;width:16px;height:2px;border-radius:2px;background:var(--c-ink);transition:transform 180ms var(--ease)}
.topbar__menu:hover{background:var(--c-primary-soft);border-color:var(--c-primary-soft)}

.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;
  background:var(--c-surface);z-index:90;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform 260ms var(--ease);box-shadow:var(--sh-2);
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{
  display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 16px;border-bottom:1px solid var(--c-line);
}
.drawer__head b{font-size:15px;color:var(--c-ink)}
.drawer__close{width:36px;height:36px;border:1px solid var(--c-line);background:#fff;border-radius:10px;font-size:18px;color:var(--c-muted);line-height:1}
.drawer__close:hover{background:var(--c-primary-soft);color:var(--c-primary);border-color:var(--c-primary-soft)}
.drawer__body{flex:1 1 auto;overflow-y:auto;padding:16px}
.drawer__body .nav-item{height:52px}
.drawer__foot{padding:16px;border-top:1px solid var(--c-line)}
.drawer__foot p{font-size:12px;color:var(--c-muted);text-align:center;margin-top:10px}
.overlay{
  position:fixed;inset:0;background:rgba(15,23,42,.4);opacity:0;visibility:hidden;
  transition:opacity 220ms var(--ease),visibility 220ms var(--ease);z-index:80;
}
.overlay.is-open{opacity:1;visibility:visible}

/* ---------- 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background-color 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.btn--primary{background:var(--c-primary);color:#fff}
.btn--primary:hover{background:var(--c-primary-strong);transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.18)}
.btn--ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary)}
.btn--ghost:hover{background:var(--c-primary-soft);transform:translateY(-2px)}
.btn--ghost:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(22,87,216,.14)}
.btn--accent{background:var(--c-accent);color:#fff}
.btn--accent:hover{background:#E96A0C;transform:translateY(-2px);box-shadow:var(--sh-2)}
.btn--accent:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.2)}
.btn--block{width:100%}
.btn[disabled],.btn.is-disabled{background:#E5E9F2;color:#9AA4B6;border-color:transparent;cursor:not-allowed;transform:none;box-shadow:none}
.text-link{
  color:var(--c-primary);font-size:15px;font-weight:600;
  text-decoration:underline;text-underline-offset:4px;
  transition:color 180ms var(--ease);
}
.text-link:hover{color:var(--c-primary-strong)}

.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12px;font-weight:600;
}
.badge--primary{background:var(--c-primary-soft);color:var(--c-primary)}
.badge--accent{background:var(--c-accent-soft);color:var(--c-accent)}
.badge--success{background:rgba(23,166,115,.12);color:var(--c-success)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);
  margin-bottom:16px;flex-wrap:wrap;
}
.breadcrumb a{color:var(--c-primary)}
.breadcrumb a:hover{color:var(--c-primary-strong)}
.breadcrumb span{color:var(--c-muted)}
.breadcrumb .is-current{color:var(--c-muted)}

/* ---------- 内页 Hero ---------- */
.page-hero{
  background:linear-gradient(180deg,#FBFCFE 0%,#F0F5FF 100%);
  border-bottom:1px solid var(--c-line);
  padding:56px 0 64px;
}
.page-hero__grid{
  display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center;
}
.page-hero h1{
  font-size:clamp(28px,3.2vw,44px);font-weight:700;line-height:1.28;
  color:var(--c-ink);margin:14px 0 16px;letter-spacing:-.01em;
}
.page-hero__lead{
  max-width:640px;font-size:16px;line-height:1.85;color:var(--c-body);
}
.page-hero__actions{display:flex;gap:12px;margin-top:26px;flex-wrap:wrap}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-points li{
  display:inline-flex;align-items:center;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);
}
.page-hero__media{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  box-shadow:var(--sh-2);background:var(--c-primary-soft);
}
.page-hero__media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.badge--corner{position:absolute;top:14px;right:14px;z-index:2;box-shadow:var(--sh-1)}

/* ---------- 板块 ---------- */
.section{padding:var(--sp-section) 0}
.section--tight{padding:56px 0}
.section__head{max-width:760px;margin-bottom:36px}
.section__head h2{
  font-size:clamp(22px,2.2vw,30px);font-weight:700;line-height:1.35;color:var(--c-ink);
}
.section__head p{margin-top:12px;font-size:16px;color:var(--c-body)}

/* ---------- 数据卡 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease);
  border-top:3px solid var(--c-primary);
}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.stat-card__num{
  display:block;font-size:32px;font-weight:800;color:var(--c-primary);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat-card__label{display:block;margin-top:8px;font-size:13px;color:var(--c-muted);line-height:1.6}

/* ---------- 步骤流程 ---------- */
.steps-layout{
  display:grid;grid-template-columns:220px minmax(0,1fr);gap:32px;align-items:start;
}
.step-nav{
  position:sticky;top:32px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:18px 14px;box-shadow:var(--sh-1);
}
.step-nav__title{
  font-size:12px;font-weight:600;color:var(--c-muted);
  padding-left:10px;margin-bottom:10px;letter-spacing:.06em;
}
.step-nav__item{
  display:flex;align-items:center;gap:10px;min-height:44px;padding:6px 10px;
  border-radius:10px;font-size:14px;color:var(--c-body);
  transition:background-color 180ms var(--ease),color 180ms var(--ease);
}
.step-nav__item:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.step-nav__item.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
.step-nav__num{
  width:22px;height:22px;flex:0 0 auto;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
}
.step-nav__item.is-active .step-nav__num{background:var(--c-primary);color:#fff}

.step-card{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),border-color 180ms var(--ease);
  scroll-margin-top:32px;
}
.step-card+.step-card{margin-top:24px}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D5E1F8}
.step-card__num{
  width:40px;height:40px;border-radius:12px;background:var(--c-primary);color:#fff;
  font-size:18px;font-weight:800;display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;margin-bottom:14px;
}
.step-card h3{font-size:19px;font-weight:600;color:var(--c-ink);line-height:1.5}
.step-card__desc{margin-top:10px;font-size:15px;line-height:1.85;color:var(--c-body)}
.step-card__tips{margin-top:16px;display:flex;flex-direction:column;gap:8px}
.step-card__tips li{
  position:relative;padding-left:20px;font-size:13px;line-height:1.7;color:var(--c-muted);
}
.step-card__tips li::before{
  content:"";position:absolute;left:4px;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--c-primary);opacity:.65;
}
.step-card__media{border-radius:var(--r-img);overflow:hidden;background:var(--c-primary-soft);align-self:start}
.step-card__media img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* ---------- 自查清单 ---------- */
.check-panel{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--sh-1);
}
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 32px;margin-top:24px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 16px;border-radius:var(--r-img);background:var(--c-surface-2);
  border:1px solid var(--c-line);font-size:15px;line-height:1.75;color:var(--c-body);
  transition:border-color 180ms var(--ease),background-color 180ms var(--ease);
}
.check-list li:hover{border-color:#CBDCF8;background:var(--c-primary-soft)}
.check-list__mark{
  width:22px;height:22px;flex:0 0 auto;margin-top:3px;border-radius:var(--r-pill);
  background:var(--c-primary);color:#fff;font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;justify-content:center;
}

/* ---------- CTA 条 ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  background:var(--c-primary);border-radius:var(--r-card);padding:36px 40px;
  box-shadow:var(--sh-2);color:#fff;
}
.cta-band h2{font-size:clamp(20px,2vw,26px);font-weight:700;line-height:1.4;color:#fff}
.cta-band p{margin-top:10px;font-size:15px;line-height:1.8;color:rgba(255,255,255,.86);max-width:620px}
.cta-band__actions{display:flex;align-items:center;gap:16px;flex:0 0 auto;flex-wrap:wrap}
.cta-band .text-link{color:#fff}

/* ---------- FAQ ---------- */
.faq-list{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);
}
.faq-item+.faq-item{border-top:1px solid var(--c-line)}
.faq-q{
  width:100%;display:flex;align-items:center;gap:14px;min-height:56px;
  padding:14px 22px;background:none;border:0;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);font-family:inherit;
  transition:background-color 180ms var(--ease);
}
.faq-q:hover{background:var(--c-surface-2)}
.faq-q__num{
  width:26px;height:26px;flex:0 0 auto;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;
}
.faq-q__icon{position:relative;width:18px;height:18px;flex:0 0 auto;margin-left:auto;transition:transform 220ms var(--ease)}
.faq-q__icon::before,.faq-q__icon::after{content:"";position:absolute;background:var(--c-muted);border-radius:2px}
.faq-q__icon::before{left:0;right:0;top:8px;height:2px}
.faq-q__icon::after{top:0;bottom:0;left:8px;width:2px}
.faq-item.is-open .faq-q__icon{transform:rotate(45deg)}
.faq-item.is-open .faq-q{background:var(--c-surface-2)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms var(--ease)}
.faq-a p{padding:0 22px 20px 62px;font-size:15px;line-height:1.85;color:var(--c-body)}

/* ---------- 页脚 ---------- */
.footer{margin-top:auto;background:var(--c-surface);border-top:1px solid var(--c-line);padding:64px 0 0}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer__brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer__brand b{font-size:15px;color:var(--c-ink)}
.footer p{font-size:13px;line-height:1.8;color:var(--c-muted);margin-bottom:8px}
.footer h3{font-size:14px;font-weight:700;color:var(--c-ink);margin-bottom:14px}
.footer li{margin-bottom:10px}
.footer li a,.footer li span{font-size:13px;color:var(--c-muted);transition:color 180ms var(--ease)}
.footer li a:hover{color:var(--c-primary)}
.footer__bottom{
  margin-top:44px;border-top:1px solid var(--c-line);padding:20px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--c-muted);
}

/* ---------- 断点 ---------- */
@media (min-width:1440px){
  :root{--container:1280px;--sidebar-w:248px}
}
@media (min-width:1200px) and (max-width:1439px){
  :root{--container:1200px;--sidebar-w:240px}
}
@media (min-width:1024px) and (max-width:1199px){
  :root{--sidebar-w:220px}
  .stat-grid{grid-template-columns:repeat(3,1fr)}
  .step-card{grid-template-columns:minmax(0,1fr) 260px}
}
@media (max-width:1023px){
  :root{--sp-section:64px}
  .sidebar{display:none}
  .page{margin-left:0}
  .topbar{display:flex}
  .page-hero{padding:36px 0 44px}
  .page-hero__grid{grid-template-columns:1fr;gap:28px}
  .page-hero__media{order:-1}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .steps-layout{grid-template-columns:1fr;gap:20px}
  .step-nav{position:static;display:flex;gap:8px;overflow-x:auto;padding:12px;border-radius:var(--r-card)}
  .step-nav__title{display:none}
  .step-nav__item{flex:0 0 auto;white-space:nowrap;padding:6px 14px;background:var(--c-surface-2);border:1px solid var(--c-line)}
  .step-nav__item.is-active{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
  .step-nav__item.is-active .step-nav__num{background:rgba(255,255,255,.22);color:#fff}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
  .footer__grid{grid-template-columns:repeat(2,1fr);gap:28px}
}
@media (max-width:767px){
  :root{--sp-section:44px}
  .container{padding:0 16px}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .stat-card{padding:18px}
  .step-card{grid-template-columns:1fr;padding:22px;gap:18px}
  .step-card__media{order:-1}
  .check-panel{padding:22px}
  .check-list{grid-template-columns:1fr;gap:12px}
  .section--tight{padding:40px 0}
  .faq-q{padding:14px 16px;gap:10px;font-size:15px}
  .faq-a p{padding:0 16px 18px 52px}
  .footer{padding-top:44px}
  .footer__grid{grid-template-columns:repeat(2,1fr)}
  .footer__bottom{flex-direction:column;gap:8px}
}
@media (max-width:479px){
  .btn{width:100%;padding:0 16px}
  .page-hero__actions{flex-direction:column;align-items:stretch}
  .cta-band__actions{flex-direction:column;align-items:stretch;width:100%}
  .stat-card__num{font-size:32px}
  .footer__grid{grid-template-columns:1fr}
  .hero-points{gap:8px}
}

/* roulang page: category3 */
:root{
  --c-primary:#1657D8;
  --c-primary-strong:#0E3FA8;
  --c-primary-soft:#E8F0FF;
  --c-accent:#FF7A1A;
  --c-accent-soft:#FFF1E4;
  --c-success:#17A673;
  --c-warning:#F5A524;
  --c-danger:#E5484D;
  --c-ink:#0F172A;
  --c-body:#3B4658;
  --c-muted:#6B7688;
  --c-line:#E3E8F2;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-surface-2:#FBFCFE;
  --sh-1:0 1px 2px rgba(15,23,42,.04), 0 8px 24px -12px rgba(15,23,42,.10);
  --sh-2:0 2px 4px rgba(15,23,42,.05), 0 16px 40px -20px rgba(22,87,216,.28);
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-badge:999px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-body);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
h1,h2,h3{color:var(--c-ink);font-weight:700;}
h1{font-size:clamp(28px,3.2vw,44px);line-height:1.28;}
h2{font-size:clamp(22px,2.2vw,30px);line-height:1.35;}
h3{font-size:19px;line-height:1.5;font-weight:600;}
time{font-variant-numeric:tabular-nums;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:3px solid var(--c-primary-soft);
  outline-offset:2px;
  border-radius:6px;
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ============ 布局 ============ */
.layout{display:block;min-height:100vh;}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;
  top:0;right:0;
  width:84vw;max-width:360px;height:100vh;
  background:var(--c-surface);
  border-left:1px solid var(--c-line);
  display:flex;flex-direction:column;
  transform:translateX(105%);
  transition:transform 280ms var(--ease);
  z-index:80;
  overflow:hidden;
}
.sidebar.is-open{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,23,42,.4);
  opacity:0;visibility:hidden;transition:opacity 220ms var(--ease),visibility 220ms var(--ease);
  z-index:70;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.sidebar__brand{
  height:72px;flex:0 0 72px;
  display:flex;align-items:center;gap:10px;
  padding:0 18px;
  border-bottom:1px solid var(--c-line);
}
.sidebar__brand svg{flex:0 0 auto;}
.sidebar__brand b{display:block;font-size:15px;color:var(--c-ink);line-height:1.25;font-weight:700;}
.sidebar__brand span{display:block;font-size:11px;color:var(--c-muted);line-height:1.5;}
.sidebar__nav{flex:1 1 auto;overflow-y:auto;padding:16px 12px 8px;}
.nav-group{margin-bottom:18px;}
.nav-group__title{
  font-size:11px;color:var(--c-muted);font-weight:600;
  letter-spacing:.06em;padding:0 14px;margin-bottom:6px;
}
.nav-item{
  position:relative;
  display:flex;align-items:center;
  height:44px;padding:0 14px;
  border-radius:var(--r-btn);
  font-size:15px;color:var(--c-body);
  transition:background 180ms var(--ease),color 180ms var(--ease);
}
.nav-item:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.nav-item.is-active{
  background:var(--c-primary-soft);
  color:var(--c-primary);
  font-weight:600;
}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;
  width:3px;border-radius:0 3px 3px 0;background:var(--c-primary);
}
.sidebar__foot{
  flex:0 0 auto;padding:16px;border-top:1px solid var(--c-line);
  background:var(--c-surface-2);
}
.sidebar__foot-note{font-size:12px;color:var(--c-muted);text-align:center;margin-top:10px;}

/* ============ 移动端顶栏 ============ */
.topbar{
  position:sticky;top:0;z-index:60;
  height:56px;display:flex;align-items:center;justify-content:space-between;
  gap:12px;padding:0 16px;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
}
.topbar__brand{display:flex;align-items:center;gap:8px;min-width:0;}
.topbar__brand b{
  font-size:14px;color:var(--c-ink);font-weight:700;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.topbar__toggle{
  width:40px;height:40px;flex:0 0 40px;
  border:1px solid var(--c-line);background:var(--c-surface);
  border-radius:var(--r-btn);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.topbar__toggle span{
  display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;position:relative;
}
.topbar__toggle span::before,
.topbar__toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--c-ink);border-radius:2px;
}
.topbar__toggle span::before{top:-6px;}
.topbar__toggle span::after{top:6px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background 180ms var(--ease),color 180ms var(--ease),
             box-shadow 180ms var(--ease),transform 180ms var(--ease);
}
.btn--primary{background:var(--c-primary);color:#fff;}
.btn--primary:hover{background:var(--c-primary-strong);transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.18);}
.btn--ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary);}
.btn--ghost:hover{background:var(--c-primary-soft);transform:translateY(-2px);}
.btn--ghost:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(22,87,216,.16);}
.btn--accent{background:var(--c-accent);color:#fff;}
.btn--accent:hover{background:#E96A0C;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn--accent:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.2);}
.btn--block{width:100%;}
.btn[disabled]{background:#E5E9F2;color:#9AA4B6;border-color:#E5E9F2;cursor:not-allowed;transform:none;box-shadow:none;}
.link-arrow{
  color:var(--c-primary);font-weight:600;font-size:14px;
  text-decoration:underline;text-underline-offset:4px;
}
.link-arrow:hover{color:var(--c-primary-strong);}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;
  height:24px;padding:0 10px;border-radius:var(--r-badge);
  font-size:12px;font-weight:600;line-height:1;
}
.badge--cat{background:var(--c-primary-soft);color:var(--c-primary);}
.badge--limit{background:var(--c-accent-soft);color:var(--c-accent);}
.badge--ok{background:#E6F7F1;color:var(--c-success);}
.badge--soft{background:var(--c-surface-2);color:var(--c-muted);border:1px solid var(--c-line);}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--c-muted);margin-bottom:16px;
}
.breadcrumb a{color:var(--c-primary);}
.breadcrumb a:hover{text-decoration:underline;text-underline-offset:4px;}
.breadcrumb .sep{color:var(--c-muted);}
.breadcrumb .current{color:var(--c-muted);}

/* ============ 板块 ============ */
.section{padding:44px 0;}
.section__head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:28px;}
.section__head p{font-size:14px;color:var(--c-muted);margin-top:6px;}
.section--tight{padding-top:0;}

/* ============ Hero ============ */
.hero{padding:28px 0 8px;}
.hero__grid{display:grid;grid-template-columns:1fr;gap:28px;align-items:center;}
.hero h1{margin-bottom:14px;}
.hero__sub{max-width:760px;font-size:16px;color:var(--c-body);margin-bottom:18px;}
.hero__badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px;}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero__figure{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  box-shadow:var(--sh-2);background:var(--c-primary-soft);
}
.hero__figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero__figure::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(232,240,255,.14),rgba(255,255,255,.42));
}
.hero__tag{position:absolute;top:14px;right:14px;z-index:2;}

/* ============ 数据速览 ============ */
.stats{display:grid;grid-template-columns:1fr;gap:16px;}
.stat{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);
  position:relative;overflow:hidden;
}
.stat::before{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:var(--c-primary);}
.stat__num{
  font-size:32px;font-weight:800;color:var(--c-primary);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.stat__label{font-size:13px;color:var(--c-muted);margin-top:6px;}

/* ============ 礼包列表 + 侧栏 ============ */
.split{display:grid;grid-template-columns:1fr;gap:24px;}
.post-list{display:flex;flex-direction:column;gap:20px;}
.post-card{
  display:grid;grid-template-columns:1fr;gap:16px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:16px;box-shadow:var(--sh-1);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.post-card__cover{border-radius:var(--r-img);overflow:hidden;background:var(--c-primary-soft);}
.post-card__cover img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.post-card__meta{display:flex;align-items:center;gap:10px;margin-bottom:8px;}
.post-card__title{font-size:16px;font-weight:600;color:var(--c-ink);margin-bottom:8px;line-height:1.5;}
.post-card__title a:hover{color:var(--c-primary);}
.post-card__excerpt{font-size:14px;color:var(--c-body);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card__foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px;}
.post-card__time{font-size:13px;color:var(--c-muted);}

/* 侧栏 */
.aside{display:flex;flex-direction:column;gap:20px;}
.aside__card{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);
}
.aside__card h3{font-size:16px;margin-bottom:14px;}
.hot-list li+li{border-top:1px solid var(--c-line);}
.hot-list a{
  display:flex;align-items:flex-start;gap:10px;
  padding:12px 0;font-size:14px;color:var(--c-body);
  transition:color 180ms var(--ease);
}
.hot-list a:hover{color:var(--c-primary);}
.hot-list .dot{
  flex:0 0 auto;width:20px;height:20px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;
  margin-top:3px;
}
.aside__cta{background:var(--c-primary-soft);border-color:transparent;}
.aside__cta p{font-size:14px;color:var(--c-body);margin:8px 0 16px;}

/* ============ 流程 ============ */
.steps{display:grid;grid-template-columns:1fr;gap:20px;}
.step{
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.step:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.step__num{
  width:40px;height:40px;border-radius:50%;
  background:var(--c-primary);color:#fff;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  font-variant-numeric:tabular-nums;margin-bottom:14px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--c-body);}

/* ============ CTA 横幅 ============ */
.cta-band{
  background:var(--c-primary);border-radius:var(--r-card);
  padding:28px;color:#fff;
  display:grid;grid-template-columns:1fr;gap:20px;align-items:center;
  box-shadow:var(--sh-2);
}
.cta-band h2{color:#fff;font-size:clamp(20px,2vw,26px);margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.86);font-size:14px;}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}
.cta-band .link-arrow{color:#fff;}

/* ============ FAQ ============ */
.faq{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);}
.faq__item+.faq__item{border-top:1px solid var(--c-line);}
.faq__q{
  width:100%;min-height:56px;padding:10px 18px;
  display:flex;align-items:center;gap:12px;
  background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-ink);
}
.faq__q:hover{background:var(--c-surface-2);}
.faq__num{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.faq__text{flex:1 1 auto;}
.faq__icon{
  flex:0 0 auto;width:16px;height:16px;position:relative;
  transition:transform 220ms var(--ease);
}
.faq__icon::before,.faq__icon::after{
  content:"";position:absolute;background:var(--c-muted);border-radius:2px;
}
.faq__icon::before{left:0;top:7px;width:16px;height:2px;}
.faq__icon::after{left:7px;top:0;width:2px;height:16px;}
.faq__item.is-open .faq__icon{transform:rotate(45deg);}
.faq__a{max-height:0;overflow:hidden;transition:max-height 280ms var(--ease);}
.faq__a-inner{padding:0 18px 20px 54px;font-size:15px;line-height:1.85;color:var(--c-body);}

/* ============ 页脚 ============ */
.footer{background:var(--c-surface);border-top:1px solid var(--c-line);margin-top:24px;}
.footer .container{padding-top:48px;padding-bottom:20px;}
.footer__grid{display:grid;grid-template-columns:1fr;gap:28px;}
.footer__brand{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.footer__brand b{font-size:15px;color:var(--c-ink);font-weight:700;}
.footer p{font-size:13px;color:var(--c-muted);}
.footer h3{font-size:14px;font-weight:700;color:var(--c-ink);margin-bottom:12px;}
.footer li{font-size:13px;color:var(--c-muted);padding:4px 0;}
.footer a{transition:color 180ms var(--ease);}
.footer a:hover{color:var(--c-primary);}
.footer__bottom{
  margin-top:32px;padding-top:16px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;
  font-size:12px;color:var(--c-muted);
}

/* ============ 断点 ============ */
@media (min-width:480px){
  .stats{grid-template-columns:repeat(2,1fr);}
}
@media (min-width:768px){
  .section{padding:64px 0;}
  .hero{padding:40px 0 12px;}
  .cta-band{grid-template-columns:6fr 4fr;padding:36px;}
  .footer__grid{grid-template-columns:repeat(2,1fr);}
  .post-card{grid-template-columns:200px 1fr;align-items:start;}
  .steps{grid-template-columns:repeat(2,1fr);}
}
@media (min-width:1024px){
  .topbar{display:none;}
  .sidebar{
    position:sticky;top:0;right:auto;left:0;
    width:240px;max-width:none;height:100vh;
    transform:none;border-left:0;border-right:1px solid var(--c-line);
    box-shadow:none;
  }
  .drawer-mask{display:none;}
  .layout{display:flex;align-items:flex-start;}
  .main{flex:1 1 auto;min-width:0;}
  .split{grid-template-columns:1fr 280px;align-items:start;}
  .aside{position:sticky;top:24px;}
  .stats{grid-template-columns:repeat(4,1fr);}
  .steps{grid-template-columns:repeat(4,1fr);}
  .hero__grid{grid-template-columns:7fr 5fr;gap:36px;}
  .footer__grid{grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;}
}
@media (min-width:1200px){
  .container{max-width:1200px;}
  .sidebar{width:248px;}
  .section{padding:88px 0;}
}
@media (min-width:1440px){
  .container{max-width:1280px;}
  .hero__grid{gap:48px;}
}
@media (max-width:479px){
  .hero__actions .btn{width:100%;}
  .cta-band__actions .btn{width:100%;}
  .stat__num{font-size:32px;}
  .faq__a-inner{padding-left:18px;}
}

/* roulang page: category5 */
:root{
  --c-primary:#1657D8;
  --c-primary-strong:#0E3FA8;
  --c-primary-soft:#E8F0FF;
  --c-accent:#FF7A1A;
  --c-accent-soft:#FFF1E4;
  --c-success:#17A673;
  --c-success-soft:#E6F7F1;
  --c-warning:#F5A524;
  --c-warning-soft:#FFF6E5;
  --c-danger:#E5484D;
  --c-ink:#0F172A;
  --c-body:#3B4658;
  --c-muted:#6B7688;
  --c-line:#E3E8F2;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-surface-2:#FBFCFE;
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,23,42,.04),0 8px 24px -12px rgba(15,23,42,.10);
  --sh-2:0 2px 4px rgba(15,23,42,.05),0 16px 40px -20px rgba(22,87,216,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sidebar-w:240px;
  --gap-card:24px;
  --sec-y:88px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--c-body);
  background:var(--c-bg);
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--c-primary);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--c-primary-strong);}
button{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{color:var(--c-ink);font-weight:700;}
:focus-visible{outline:none;box-shadow:0 0 0 3px var(--c-primary-soft);border-radius:8px;}

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

/* ---------- 布局骨架 ---------- */
.layout{display:flex;min-height:100vh;align-items:stretch;}
.content{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--c-bg);}

/* ---------- 左侧导航 ---------- */
.sidebar{
  position:sticky;top:0;height:100vh;
  width:var(--sidebar-w);flex:0 0 var(--sidebar-w);
  display:flex;flex-direction:column;
  background:var(--c-surface);
  border-right:1px solid var(--c-line);
  overflow-y:auto;
  z-index:70;
}
@media (min-width:1200px) and (max-width:1439px){.sidebar{flex:0 0 240px;width:240px;}}
@media (min-width:1024px) and (max-width:1199px){.sidebar{flex:0 0 220px;width:220px;}}
.sidebar__brand{
  display:flex;align-items:center;gap:10px;
  min-height:72px;padding:14px 16px;
  border-bottom:1px solid var(--c-line);
}
.sidebar__brand svg{flex:0 0 auto;}
.sidebar__brand-text{display:flex;flex-direction:column;min-width:0;}
.sidebar__brand-text b{
  font-size:15px;font-weight:700;color:var(--c-ink);line-height:1.35;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.sidebar__brand-text span{font-size:11px;color:var(--c-muted);line-height:1.5;white-space:nowrap;}
.sidebar__nav{padding:16px 12px;display:flex;flex-direction:column;gap:18px;flex:1;}
.nav-group{display:flex;flex-direction:column;gap:4px;}
.nav-group__title{
  font-size:11px;font-weight:600;letter-spacing:.08em;
  color:var(--c-muted);padding:0 14px;margin-bottom:2px;
}
.nav-item{
  display:flex;align-items:center;min-height:44px;padding:0 14px;
  border-radius:10px;font-size:15px;color:var(--c-body);
  position:relative;line-height:1.45;
}
.nav-item:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.nav-item.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;}
.nav-item.is-active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:20px;border-radius:2px;background:var(--c-primary);
}
.sidebar__foot{padding:16px;border-top:1px solid var(--c-line);background:var(--c-surface-2);}
.sidebar__foot p{font-size:12px;color:var(--c-muted);margin-top:10px;text-align:center;line-height:1.6;}

/* ---------- 移动端顶栏 ---------- */
.topbar{
  display:none;align-items:center;gap:12px;
  height:56px;padding:0 16px;
  background:var(--c-surface);border-bottom:1px solid var(--c-line);
  position:sticky;top:0;z-index:60;
  transition:box-shadow .2s var(--ease);
}
.topbar.is-scrolled{box-shadow:var(--sh-1);}
.topbar__brand{display:flex;align-items:center;gap:9px;min-width:0;flex:1;color:var(--c-ink);}
.topbar__brand b{
  font-size:15px;font-weight:700;color:var(--c-ink);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.topbar__menu{
  flex:0 0 auto;width:40px;height:40px;border:1px solid var(--c-line);
  background:var(--c-surface);border-radius:10px;display:flex;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;
  transition:background-color .18s var(--ease),border-color .18s var(--ease);
}
.topbar__menu:hover{background:var(--c-primary-soft);border-color:var(--c-primary-soft);}
.topbar__menu span{display:block;width:16px;height:2px;border-radius:2px;background:var(--c-ink);}
.scrim{
  position:fixed;inset:0;background:rgba(15,23,42,.4);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;
  z-index:75;
}
.scrim.is-open{opacity:1;visibility:visible;}

@media (max-width:1023px){
  .sidebar{
    position:fixed;top:0;right:0;left:auto;height:100vh;
    width:84vw;max-width:360px;flex:0 0 auto;
    transform:translateX(105%);
    transition:transform .26s var(--ease);
    box-shadow:var(--sh-2);
    overflow-y:auto;
  }
  .sidebar.is-open{transform:translateX(0);}
  .topbar{display:flex;}
  .nav-item{min-height:52px;font-size:15px;}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  cursor:pointer;white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),
             transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn--primary{background:var(--c-primary);color:#fff;}
.btn--primary:hover{background:var(--c-primary-strong);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);}
.btn--primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.2);}
.btn--ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary);}
.btn--ghost:hover{background:var(--c-primary-soft);color:var(--c-primary-strong);transform:translateY(-2px);}
.btn--accent{background:var(--c-accent);color:#fff;}
.btn--accent:hover{background:#E96A0E;color:#fff;transform:translateY(-2px);box-shadow:0 16px 40px -20px rgba(255,122,26,.6);}
.btn--block{width:100%;}
.btn[disabled],.btn.is-disabled{background:#E5E9F2;color:#9AA4B6;cursor:not-allowed;transform:none;box-shadow:none;border-color:transparent;}
.link-more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;text-decoration:underline;text-underline-offset:4px;}

/* ---------- 徽章 ---------- */
.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-soft);color:var(--c-primary);}
.badge--hot{background:var(--c-accent-soft);color:#B34E05;}
.badge--ok{background:var(--c-success-soft);color:var(--c-success);}
.badge--warn{background:var(--c-warning-soft);color:#9A6206;}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);}
.breadcrumb a{color:var(--c-primary);}
.breadcrumb span.sep{color:var(--c-line);}
.breadcrumb .current{color:var(--c-muted);}

/* ---------- 页头 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.20;
}
.page-hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.86) 55%,rgba(232,240,255,.78) 100%);
}
.page-hero__inner{position:relative;padding:40px 0 48px;}
.page-hero h1{
  font-size:clamp(28px,3.2vw,44px);line-height:1.28;font-weight:700;
  margin:16px 0 14px;max-width:820px;
}
.page-hero .lead{
  font-size:16px;line-height:1.85;color:var(--c-body);max-width:760px;margin-bottom:22px;
}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.chip{
  display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 14px;
  border-radius:var(--r-pill);background:var(--c-surface);border:1px solid var(--c-line);
  font-size:13px;color:var(--c-body);
}
.chip svg{flex:0 0 auto;}

/* ---------- 板块通用 ---------- */
.section{padding:var(--sec-y) 0;}
.section--tight{padding:56px 0;}
.section--plain{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap;}
.section__head h2{font-size:clamp(22px,2.2vw,30px);line-height:1.35;font-weight:700;}
.section__head p{font-size:14px;color:var(--c-muted);margin-top:8px;line-height:1.7;}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap-card);}
.stat{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);position:relative;overflow:hidden;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.stat::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--c-primary);}
.stat:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.stat__num{
  font-size:32px;font-weight:800;color:var(--c-primary);line-height:1.15;
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;
}
.stat__label{font-size:13px;color:var(--c-muted);margin-top:6px;line-height:1.6;}

/* ---------- 自助排查 ---------- */
.steps-row{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap-card);}
.step-card{
  background:var(--c-surface-2);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;display:flex;gap:14px;align-items:flex-start;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease);
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--sh-1);background:var(--c-surface);}
.step-card__num{
  flex:0 0 auto;width:34px;height:34px;border-radius:50%;
  background:var(--c-primary);color:#fff;font-size:14px;font-weight:700;
  display:grid;place-items:center;
}
.step-card h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.step-card p{font-size:14px;line-height:1.8;color:var(--c-body);}

/* ---------- FAQ 区（锚点 + 手风琴） ---------- */
.faq-wrap{display:grid;grid-template-columns:220px 1fr;gap:32px;align-items:start;}
.toc{
  position:sticky;top:24px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:16px;box-shadow:var(--sh-1);
}
.toc__title{
  font-size:11px;font-weight:600;letter-spacing:.08em;color:var(--c-muted);
  padding:0 8px 10px;display:block;
}
.toc__link{
  display:block;padding:10px 12px;border-radius:10px;font-size:14px;
  color:var(--c-body);line-height:1.5;transition:background-color .18s var(--ease),color .18s var(--ease);
}
.toc__link:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.toc__link.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;}
.toc__foot{
  margin-top:14px;padding-top:14px;border-top:1px solid var(--c-line);
  font-size:12px;color:var(--c-muted);line-height:1.7;
}
.faq-groups{display:flex;flex-direction:column;gap:36px;min-width:0;}
.faq-group{scroll-margin-top:84px;}
.faq-group__head{margin-bottom:14px;}
.faq-group__head h2{font-size:22px;line-height:1.4;font-weight:700;display:flex;align-items:center;gap:10px;}
.faq-group__head h2::before{
  content:"";width:6px;height:20px;border-radius:3px;background:var(--c-primary);flex:0 0 auto;
}
.faq-group__head p{font-size:13px;color:var(--c-muted);margin-top:6px;line-height:1.7;}
.faq-list{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:last-child{border-bottom:none;}
.faq-item__q{
  width:100%;min-height:56px;display:flex;align-items:center;gap:12px;
  padding:14px 20px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.6;
  transition:background-color .18s var(--ease);
}
.faq-item__q:hover{background:var(--c-surface-2);}
.faq-item__num{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:700;display:grid;place-items:center;
  font-variant-numeric:tabular-nums;
}
.faq-item__title{flex:1;min-width:0;}
.faq-item__icon{flex:0 0 auto;width:20px;height:20px;color:var(--c-muted);transition:transform .24s var(--ease),color .18s var(--ease);}
.faq-item.is-open .faq-item__icon{transform:rotate(45deg);color:var(--c-primary);}
.faq-item.is-open .faq-item__q{background:var(--c-primary-soft);color:var(--c-primary-strong);}
.faq-item__a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-item__a-inner{
  padding:0 20px 20px 58px;font-size:15px;line-height:1.85;color:var(--c-body);
}
.faq-item__a-inner p{margin-bottom:10px;}
.faq-item__a-inner p:last-child{margin-bottom:0;}
.faq-item__a-inner ul{padding-left:0;margin:8px 0;}
.faq-item__a-inner li{position:relative;padding-left:16px;margin-bottom:6px;}
.faq-item__a-inner li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:50%;background:var(--c-primary);
}

/* ---------- CTA 横幅 ---------- */
.cta-band{
  background:linear-gradient(112deg,var(--c-primary) 0%,#1F6BEE 62%,#2C7DF6 100%);
  border-radius:var(--r-card);padding:36px;color:#fff;box-shadow:var(--sh-2);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{color:#fff;font-size:clamp(20px,2vw,26px);line-height:1.4;margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.86);font-size:14px;line-height:1.8;max-width:560px;}
.cta-band .btn--accent{flex:0 0 auto;}
.cta-band .cta-note{margin-top:10px;font-size:12px;color:rgba(255,255,255,.75);}

/* ---------- 入口推荐卡 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap-card);}
.entry-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.entry-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.entry-card__media{position:relative;aspect-ratio:16/10;background:var(--c-primary-soft);}
.entry-card__media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.entry-card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.entry-card h3{font-size:16px;font-weight:600;line-height:1.5;}
.entry-card p{font-size:14px;line-height:1.8;color:var(--c-body);}
.entry-card .entry-card__link{margin-top:auto;font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}

/* ---------- 页脚 ---------- */
.footer{
  margin-top:auto;background:var(--c-surface);border-top:1px solid var(--c-line);
  padding:56px 0 0;
}
.footer__grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:36px;
}
.footer__brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer__brand b{font-size:15px;color:var(--c-ink);line-height:1.5;}
.footer p{font-size:13px;color:var(--c-muted);line-height:1.8;margin-bottom:6px;}
.footer h3{font-size:14px;font-weight:700;color:var(--c-ink);margin-bottom:14px;}
.footer ul li{margin-bottom:10px;}
.footer ul a,.footer ul li{font-size:13px;color:var(--c-muted);line-height:1.7;}
.footer ul a:hover{color:var(--c-primary);}
.footer__bottom{
  border-top:1px solid var(--c-line);padding:18px 0;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12px;color:var(--c-muted);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec-y:72px;}
  .faq-wrap{grid-template-columns:200px 1fr;gap:24px;}
}
@media (max-width:1023px){
  :root{--sec-y:64px;--gap-card:20px;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .steps-row{grid-template-columns:1fr;}
  .faq-wrap{grid-template-columns:1fr;gap:20px;}
  .toc{position:static;display:flex;gap:8px;overflow-x:auto;padding:10px;border-radius:14px;-webkit-overflow-scrolling:touch;}
  .toc__title{display:none;}
  .toc__link{flex:0 0 auto;white-space:nowrap;background:var(--c-surface-2);padding:8px 14px;border-radius:var(--r-pill);border:1px solid var(--c-line);}
  .toc__foot{display:none;}
  .entry-grid{grid-template-columns:repeat(2,1fr);}
  .footer__grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767px){
  .page-hero__inner{padding:28px 0 36px;}
  .stats{grid-template-columns:1fr 1fr;}
  .entry-grid{grid-template-columns:1fr;}
  .cta-band{padding:26px;border-radius:14px;}
  .cta-band .btn{width:100%;}
  .section__head{flex-direction:column;align-items:flex-start;}
  .faq-item__q{padding:14px 16px;font-size:15px;}
  .faq-item__a-inner{padding:0 16px 18px 52px;}
}
@media (max-width:519px){
  .container{padding:0 16px;}
  .stats{grid-template-columns:1fr;}
  .stat__num{font-size:28px;}
  .btn{width:100%;}
  .btn--inline{width:auto;}
  .footer__grid{grid-template-columns:1fr;}
  .footer__bottom{flex-direction:column;}
  .toc{border-radius:12px;}
}

/* roulang page: category4 */
:root{
  --c-primary:#1657D8;
  --c-primary-strong:#0E3FA8;
  --c-primary-soft:#E8F0FF;
  --c-accent:#FF7A1A;
  --c-accent-soft:#FFF1E4;
  --c-success:#17A673;
  --c-warning:#F5A524;
  --c-danger:#E5484D;
  --c-ink:#0F172A;
  --c-body:#3B4658;
  --c-muted:#6B7688;
  --c-line:#E3E8F2;
  --c-bg:#F6F8FC;
  --c-surface:#FFFFFF;
  --c-surface-2:#FBFCFE;
  --sh-1:0 1px 2px rgba(15,23,42,.04), 0 8px 24px -12px rgba(15,23,42,.10);
  --sh-2:0 2px 4px rgba(15,23,42,.05), 0 16px 40px -20px rgba(22,87,216,.28);
  --r-card:16px;
  --r-btn:10px;
  --r-img:14px;
  --sp-section:88px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  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}
a:hover{text-decoration:underline;text-underline-offset:4px}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--c-ink);font-weight:700}
h1{font-size:clamp(28px,3.2vw,44px);line-height:1.28;letter-spacing:-.01em}
h2{font-size:clamp(22px,2.2vw,30px);line-height:1.35}
h3{font-size:19px;line-height:1.5}
ul{margin:0;padding:0;list-style:none}
p{margin:0}
:focus-visible{outline:3px solid var(--c-primary-soft);outline-offset:2px}

/* 布局骨架 */
.app{display:flex;align-items:flex-start;min-height:100vh}
.main{flex:1;min-width:0;display:flex;flex-direction:column}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding-top:var(--sp-section)}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.section__sub{margin-top:8px;font-size:14px;color:var(--c-muted);max-width:660px;line-height:1.7}
.text-link{font-size:14px;font-weight:600;color:var(--c-primary);white-space:nowrap}

/* 左侧导航 */
.sidebar{
  position:sticky;top:0;flex:0 0 248px;width:248px;height:100vh;
  background:var(--c-surface);border-right:1px solid var(--c-line);
  display:flex;flex-direction:column;
}
.sidebar__brand{height:72px;display:flex;align-items:center;gap:10px;padding:0 18px;border-bottom:1px solid var(--c-line)}
.brand__text b{display:block;font-size:15px;font-weight:700;color:var(--c-ink);line-height:1.3}
.brand__text span{display:block;font-size:11px;color:var(--c-muted);line-height:1.5}
.sidebar__nav{flex:1;overflow-y:auto;padding:16px 12px}
.nav-group+.nav-group{margin-top:18px}
.nav-group__title{margin:0 0 8px;padding:0 10px;font-size:11px;font-weight:600;letter-spacing:.06em;color:var(--c-muted)}
.nav-item{
  position:relative;display:flex;align-items:center;height:44px;padding:0 14px;
  border-radius:10px;font-size:15px;color:var(--c-body);
  transition:background .18s ease,color .18s ease;
}
.nav-item:hover{background:var(--c-primary-soft);color:var(--c-primary);text-decoration:none}
.nav-item.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600}
.nav-item.is-active::before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--c-primary)}
.sidebar__foot{padding:16px;border-top:1px solid var(--c-line)}
.sidebar__foot .btn{width:100%}
.sidebar__hint{margin-top:10px;font-size:12px;color:var(--c-muted);text-align:center;line-height:1.6}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),background .18s ease,box-shadow .18s ease,color .18s ease;
}
.btn--primary{background:var(--c-primary);color:#fff}
.btn--primary:hover{background:var(--c-primary-strong);color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);text-decoration:none}
.btn--primary:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(15,23,42,.18)}
.btn--ghost{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-primary)}
.btn--ghost:hover{background:var(--c-primary-soft);transform:translateY(-2px);text-decoration:none}
.btn--ghost:active{transform:translateY(0)}
.btn--accent{background:var(--c-accent);color:#fff}
.btn--accent:hover{background:#E96A0C;color:#fff;transform:translateY(-2px);box-shadow:var(--sh-2);text-decoration:none}
.btn--accent:active{transform:translateY(0)}
.btn.is-disabled,.btn[disabled]{background:#E5E9F2;color:#9AA4B6;border-color:#E5E9F2;cursor:not-allowed;transform:none;box-shadow:none}

/* 徽章 */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;white-space:nowrap}
.badge--soft{background:var(--c-primary-soft);color:var(--c-primary)}
.badge--accent{background:var(--c-accent-soft);color:#C2540A}
.badge--success{background:#E7F7F0;color:#0F7C55}
.badge--warn{background:#FEF4E4;color:#9A6108}

/* 面包屑 */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);padding-top:26px}
.crumb a{color:var(--c-primary)}
.crumb span.sep{color:var(--c-line)}
.crumb .current{color:var(--c-muted)}

/* 首屏 */
.hero{padding-top:16px}
.hero__grid{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:center}
.hero__lead{margin-top:16px;font-size:16px;max-width:520px;color:var(--c-body)}
.hero__badges{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 24px}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px}
.hero__figure{
  position:relative;aspect-ratio:16/10;border-radius:var(--r-img);overflow:hidden;
  background:var(--c-primary-soft);box-shadow:var(--sh-2);
}
.hero__figure img{width:100%;height:100%;object-fit:cover}
.hero__figure::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.42),rgba(232,240,255,.18))}
.hero__tag{position:absolute;top:14px;right:14px;z-index:2;background:var(--c-accent);color:#fff;height:26px;padding:0 12px;border-radius:999px;font-size:12px;font-weight:700;display:inline-flex;align-items:center}

/* 数据卡 */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.stat{
  background:var(--c-surface);border:1px solid var(--c-line);border-top:3px solid var(--c-primary);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s ease;
}
.stat:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.stat__num{font-size:32px;font-weight:800;color:var(--c-primary);line-height:1.15;font-variant-numeric:tabular-nums}
.stat__label{margin-top:6px;font-size:13px;color:var(--c-muted)}

/* 对比矩阵 */
.matrix{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.matrix__head,.matrix__row{display:grid;grid-template-columns:1.25fr repeat(3,1fr)}
.matrix__cell{
  display:flex;align-items:center;gap:8px;min-height:56px;padding:14px 16px;
  font-size:15px;border-bottom:1px solid var(--c-line);
}
.matrix__head .matrix__cell{background:var(--c-primary-soft);color:var(--c-primary);font-weight:700;border-bottom:1px solid #D5E3FF}
.matrix__row:nth-child(even) .matrix__cell{background:var(--c-surface-2)}
.matrix__cell--name{color:var(--c-ink);font-weight:600}
.matrix__row:last-child .matrix__cell{border-bottom:none}
.matrix__cell.is-rec{background:#EEF4FF}
.matrix__row:nth-child(even) .matrix__cell.is-rec{background:#EEF4FF}
.matrix__head .matrix__cell.is-rec{background:#DCE8FF}
.rec-tag{display:inline-flex;align-items:center;height:20px;padding:0 8px;border-radius:999px;background:var(--c-primary);color:#fff;font-size:11px;font-weight:700;margin-right:6px}
.num-cell{font-weight:700;color:var(--c-ink);font-variant-numeric:tabular-nums}

/* 移动端对比卡 */
.matrix-cards{display:none;gap:16px}
.mcard{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1)}
.mcard--rec{border-color:#B9D2FF;border-top:3px solid var(--c-primary)}
.mcard__desc{margin-top:6px;font-size:13px;color:var(--c-muted)}
.mcard__list{margin-top:14px;display:grid;gap:10px}
.mcard__list li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--c-body);padding-top:10px;border-top:1px solid var(--c-line)}
.mcard__list li:first-child{border-top:none;padding-top:0}

/* 适用场景 */
.scene{display:grid;grid-template-columns:5fr 7fr;gap:32px;align-items:start}
.scene__figure{border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-1);background:var(--c-primary-soft);aspect-ratio:16/10}
.scene__figure img{width:100%;height:100%;object-fit:cover}
.scene__caption{margin-top:12px;font-size:13px;color:var(--c-muted)}
.scene__list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.scene__item{
  display:flex;gap:12px;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-img);padding:18px;box-shadow:var(--sh-1);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s ease;
}
.scene__item:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.scene__item h3{font-size:16px;font-weight:600;line-height:1.55}
.scene__item p{margin-top:6px;font-size:13px;color:var(--c-muted);line-height:1.7}
.num-badge{
  flex:0 0 28px;width:28px;height:28px;border-radius:999px;background:var(--c-primary-soft);
  color:var(--c-primary);font-size:13px;font-weight:700;display:grid;place-items:center;
}

/* 流程 */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow__step{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);
  transition:transform .18s cubic-bezier(.2,.7,.3,1),box-shadow .18s ease;
}
.flow__step:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.flow__step::before{content:"";position:absolute;top:0;left:22px;width:44px;height:3px;border-radius:0 0 3px 3px;background:var(--c-primary)}
.flow__step h3{margin-top:14px;font-size:16px;font-weight:600}
.flow__step p{margin-top:8px;font-size:13px;color:var(--c-muted);line-height:1.75}
.flow__index{font-size:13px;font-weight:700;color:var(--c-primary);font-variant-numeric:tabular-nums}

/* 限时横幅 */
.banner{
  display:grid;grid-template-columns:6fr 4fr;gap:24px;align-items:center;
  background:var(--c-primary);color:#fff;border-radius:var(--r-card);padding:32px;box-shadow:var(--sh-2);
}
.banner h2{color:#fff}
.banner__sub{margin-top:10px;font-size:14px;color:#D6E3FF;line-height:1.75;max-width:520px}
.banner__clock{display:flex;align-items:baseline;gap:10px;margin-top:16px}
.banner__clock span{font-size:13px;color:#C7D8FF}
.banner__num{font-size:40px;font-weight:800;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:.02em;min-width:172px;display:inline-block}
.banner__right{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.banner__link{color:#fff;font-size:14px;font-weight:600;text-decoration:underline;text-underline-offset:4px}

/* FAQ */
.faq{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1)}
.faq__item+.faq__item{border-top:1px solid var(--c-line)}
.faq__q{
  width:100%;display:flex;align-items:center;gap:14px;min-height:56px;padding:12px 22px;
  background:none;border:0;text-align:left;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--c-ink);transition:background .18s ease;
}
.faq__q:hover{background:var(--c-primary-soft)}
.faq__idx{
  flex:0 0 26px;width:26px;height:26px;border-radius:999px;background:var(--c-primary-soft);
  color:var(--c-primary);font-size:12px;font-weight:700;display:grid;place-items:center;
}
.faq__plus{margin-left:auto;flex:0 0 18px;width:18px;height:18px;position:relative;transition:transform .24s cubic-bezier(.2,.7,.3,1)}
.faq__plus::before,.faq__plus::after{content:"";position:absolute;background:var(--c-muted);border-radius:2px}
.faq__plus::before{left:0;top:8px;width:18px;height:2px}
.faq__plus::after{left:8px;top:0;width:2px;height:18px}
.faq__item.is-open .faq__plus{transform:rotate(45deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq__a-inner{padding:0 22px 22px 62px;font-size:15px;line-height:1.85;color:var(--c-body)}

/* 收尾 CTA */
.cta{
  background:var(--c-primary-soft);border:1px solid #D5E3FF;border-radius:var(--r-card);
  padding:36px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta__text{max-width:640px}
.cta__text p{margin-top:10px;font-size:15px;color:var(--c-body)}

/* 页脚 */
.footer{margin-top:var(--sp-section);background:var(--c-surface);border-top:1px solid var(--c-line)}
.footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding:48px 0 32px}
.footer h3{font-size:14px;font-weight:700;margin-bottom:14px}
.footer ul{display:grid;gap:10px}
.footer ul a{font-size:13px;color:var(--c-muted)}
.footer ul a:hover{color:var(--c-primary)}
.footer li{font-size:13px;color:var(--c-muted)}
.footer p{font-size:13px;color:var(--c-muted);margin-top:10px;line-height:1.7;max-width:340px}
.footer__brand{display:flex;align-items:center;gap:10px}
.footer__brand b{font-size:15px;color:var(--c-ink)}
.footer__bottom{
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  border-top:1px solid var(--c-line);padding:18px 0;font-size:12px;color:var(--c-muted);
}

/* 移动端顶部栏与抽屉 */
.mobile-bar{
  display:none;position:sticky;top:0;z-index:60;height:56px;align-items:center;gap:10px;
  padding:0 14px;background:var(--c-surface);border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease;
}
.mobile-bar.is-stuck{box-shadow:var(--sh-1)}
.mobile-bar__logo{display:flex;align-items:center;gap:8px;min-width:0}
.mobile-bar__logo b{font-size:15px;font-weight:700;color:var(--c-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hamburger{
  margin-left:auto;flex:0 0 40px;width:40px;height:40px;border:1px solid var(--c-line);
  border-radius:10px;background:var(--c-surface);display:grid;place-items:center;cursor:pointer;
  transition:background .18s ease,border-color .18s ease;
}
.hamburger:hover{background:var(--c-primary-soft);border-color:#C9DCFF}
.hamburger span{display:block;width:16px;height:2px;background:var(--c-ink);border-radius:2px;margin:2px 0}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:90;
  background:var(--c-surface);display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .28s cubic-bezier(.2,.7,.3,1);
  box-shadow:-16px 0 40px -24px rgba(15,23,42,.35);
}
.drawer.is-open{transform:none}
.drawer__head{height:56px;display:flex;align-items:center;padding:0 16px;border-bottom:1px solid var(--c-line);gap:10px}
.drawer__head b{font-size:15px;color:var(--c-ink)}
.drawer__close{margin-left:auto;width:36px;height:36px;border:1px solid var(--c-line);border-radius:10px;background:var(--c-surface);cursor:pointer;font-size:18px;line-height:1;color:var(--c-muted)}
.drawer__body{flex:1;overflow-y:auto;padding:16px 14px}
.drawer .nav-item{height:52px}
.drawer__foot{padding:16px;border-top:1px solid var(--c-line)}
.drawer__foot .btn{width:100%}
.drawer__mask{
  position:fixed;inset:0;background:rgba(15,23,42,.4);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .28s ease,visibility .28s ease;
}
.drawer__mask.is-open{opacity:1;visibility:visible}

/* 断点 */
@media (min-width:1440px){
  .container{max-width:1280px}
}
@media (max-width:1199px){
  .sidebar{flex:0 0 240px;width:240px}
  .container{padding:0 28px}
  .hero__grid{gap:32px}
}
@media (max-width:1023px){
  .app{display:block}
  .sidebar{display:none}
  .mobile-bar{display:flex}
  .container{padding:0 20px}
  :root{--sp-section:64px}
  .hero__grid{grid-template-columns:1fr;gap:24px}
  .hero__figure{aspect-ratio:16/9}
  .stats{grid-template-columns:repeat(3,1fr);gap:20px}
  .scene{grid-template-columns:1fr;gap:24px}
  .flow{grid-template-columns:repeat(2,1fr);gap:20px}
  .banner{grid-template-columns:1fr;padding:28px}
  .banner__num{font-size:34px;min-width:146px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  :root{--sp-section:44px}
  .container{padding:0 16px}
  .stats{grid-template-columns:1fr;gap:16px}
  .matrix{display:none}
  .matrix-cards{display:grid}
  .scene__list{grid-template-columns:1fr;gap:16px}
  .flow{grid-template-columns:1fr;gap:16px}
  .faq__a-inner{padding:0 18px 20px 18px}
  .faq__q{padding:12px 18px;font-size:15px}
  .cta{padding:26px}
  .footer__grid{grid-template-columns:1fr;padding:36px 0 24px}
  .banner{padding:24px}
}
@media (max-width:479px){
  h1{font-size:26px}
  .hero__actions{flex-direction:column;align-items:stretch}
  .hero__actions .btn{width:100%}
  .banner__right{align-items:stretch;width:100%}
  .banner__right .btn{width:100%}
  .banner__num{font-size:32px;min-width:138px}
  .cta .btn{width:100%}
  .stat__num{font-size:28px}
}