/* roulang page: index */
/* ===================== 设计变量 ===================== */
:root{
  --c-primary:#0B6FA4;
  --c-primary-dark:#084E76;
  --c-primary-light:#E9F4FB;
  --c-accent:#FF8A3D;
  --c-accent-dark:#E5701F;
  --c-accent-light:#FFF1E6;
  --c-text:#17222E;
  --c-text-sub:#5C6B7A;
  --c-border:#E3EAF2;
  --c-bg:#F6F9FC;
  --c-white:#FFFFFF;
  --c-success:#1FA971;
  --r-card:14px;
  --r-btn:10px;
  --r-img:16px;
  --r-pill:999px;
  --sh-card:0 2px 8px rgba(11,111,164,.06);
  --sh-hover:0 10px 28px rgba(11,111,164,.12);
  --sp-section:92px;
  --w-container:1200px;
}
/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
  font-size:16px;line-height:1.75;letter-spacing:0;
  color:var(--c-text);background:var(--c-bg);
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,box-shadow .18s ease,transform .18s ease,border-color .18s ease}
a:hover{color:var(--c-primary-dark);text-decoration:underline}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.3;color:var(--c-text)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--c-text)}
hr{border:0;border-top:1px solid var(--c-border);margin:0}
::selection{background:var(--c-primary-light);color:var(--c-primary-dark)}
/* ===================== 容器与排版 ===================== */
.container{width:100%;max-width:var(--w-container);margin:0 auto;padding:0 24px}
.section{padding:var(--sp-section) 0}
.section--white{background:var(--c-white)}
.section--tint{background:var(--c-bg)}
.sec-head{max-width:740px;margin:0 auto 46px;text-align:center}
.sec-head h2{font-size:clamp(22px,3vw,30px);line-height:1.3}
.sec-head p{margin-top:14px;font-size:15.5px;color:var(--c-text-sub)}
.sec-head--left{margin-left:0;text-align:left}
.text-accent{color:var(--c-accent)}
/* ===================== 顶部信息条 ===================== */
.topbar{background:var(--c-primary-dark);color:rgba(255,255,255,.9);font-size:13px}
.topbar__inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:6px 0}
.topbar__left{display:flex;align-items:center;gap:12px;min-width:0}
.topbar__domain{font-weight:600;color:#fff;white-space:nowrap;letter-spacing:.3px}
.topbar__sep{width:1px;height:12px;background:rgba(255,255,255,.28);flex:0 0 1px}
.topbar__tip{color:rgba(255,255,255,.74);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar__links{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.topbar__links a{color:#fff;font-size:13px;padding:4px 0}
.topbar__links a:hover{color:var(--c-accent);text-decoration:none}
/* ===================== 主导航 ===================== */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--c-border);transition:box-shadow .22s ease}
.site-header.is-stuck{box-shadow:0 2px 10px rgba(11,111,164,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand__mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,#0B6FA4 0%,#084E76 100%);color:#fff;display:grid;place-items:center;font-size:15px;font-weight:700;flex:0 0 34px}
.brand__text{font-size:17px;font-weight:700;color:var(--c-text);letter-spacing:.2px;white-space:nowrap}
.brand:hover .brand__text{color:var(--c-primary-dark)}
.nav__menu{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:center;min-width:0}
.nav__menu a{position:relative;display:flex;align-items:center;height:44px;padding:0 12px;font-size:14.5px;color:var(--c-text);border-radius:8px;white-space:nowrap}
.nav__menu a:hover{color:var(--c-primary);background:var(--c-primary-light);text-decoration:none}
.nav__menu a.active{color:var(--c-primary);font-weight:600}
.nav__menu a.active::after{content:"";position:absolute;left:50%;bottom:5px;transform:translateX(-50%);width:20px;height:2px;border-radius:2px;background:var(--c-primary)}
.nav__right{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--c-border);border-radius:10px;background:#fff;cursor:pointer;align-items:center;justify-content:center}
.nav-toggle i{font-size:18px;color:var(--c-text)}
/* ===================== 按钮 ===================== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;transition:all .18s ease;white-space:nowrap;text-align:center}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn-primary{background:var(--c-accent);border-color:var(--c-accent);color:#fff}
.btn-primary:hover{background:var(--c-accent-dark);border-color:var(--c-accent-dark);color:#fff;text-decoration:none;transform:translateY(-1px)}
.btn-outline{background:#fff;border-color:var(--c-primary);color:var(--c-primary)}
.btn-outline:hover{background:var(--c-primary-light);color:var(--c-primary-dark);text-decoration:none;transform:translateY(-1px)}
.btn-solid{background:var(--c-primary);border-color:var(--c-primary);color:#fff}
.btn-solid:hover{background:var(--c-primary-dark);border-color:var(--c-primary-dark);color:#fff;text-decoration:none;transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;text-decoration:none}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px}
/* ===================== Hero ===================== */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#EFF7FC 0%,#F8FBFE 55%,#FFFFFF 100%);padding:62px 0 88px}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(11,111,164,.10) 0%,rgba(11,111,164,0) 68%);pointer-events:none}
.hero__inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:56px;align-items:center}
.hero__eyebrow{display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);background:var(--c-primary-light);color:var(--c-primary);font-size:13px;font-weight:600;margin-bottom:20px}
.hero h1{font-size:clamp(28px,4vw,40px);line-height:1.25;letter-spacing:-.2px;max-width:19ch}
.hero__lead{margin-top:18px;font-size:17px;line-height:1.8;color:var(--c-text-sub);max-width:34em}
.hero__actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px}
.hero__trust{margin-top:32px;padding-top:22px;border-top:1px dashed #CFE0EC;display:flex;flex-wrap:wrap;gap:12px 30px}
.trust{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--c-text-sub)}
.trust i{color:var(--c-primary);font-size:15px}
.hero__media{position:relative}
.hero__media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);box-shadow:0 18px 44px rgba(8,78,118,.16)}
.float-card{position:absolute;right:14px;bottom:-26px;background:#fff;border:1px solid var(--c-border);border-radius:12px;box-shadow:0 12px 30px rgba(11,111,164,.14);padding:14px 18px;min-width:172px}
.float-card__title{font-size:13px;color:var(--c-text-sub);display:flex;align-items:center;gap:6px}
.float-card__title i{color:var(--c-success)}
.float-card__value{margin-top:4px;font-size:22px;font-weight:600;color:var(--c-primary);line-height:1.2}
/* ===================== 入口卡片 ===================== */
.entry-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.entry-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.entry-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#CFE4F3;text-decoration:none}
.entry-card__img{aspect-ratio:16/10;overflow:hidden;background:var(--c-primary-light)}
.entry-card__img img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.entry-card:hover .entry-card__img img{transform:scale(1.05)}
.entry-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.entry-card__body h3{font-size:16.5px;line-height:1.45}
.entry-card__body p{margin-top:9px;font-size:14px;line-height:1.7;color:var(--c-text-sub);flex:1 1 auto}
.entry-card__link{margin-top:14px;font-size:14px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}
.entry-card:hover .entry-card__link i{transform:translateX(3px)}
.entry-card__link i{transition:transform .2s ease}
/* ===================== 步骤轨 ===================== */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;position:relative}
.step{position:relative;text-align:center;padding:0 20px}
.step:not(:last-child)::before{content:"";position:absolute;top:28px;left:calc(50% + 44px);right:calc(-50% + 44px);border-top:2px dashed #C9DEEF}
.step__num{position:relative;z-index:1;width:56px;height:56px;margin:0 auto 18px;border-radius:50%;background:var(--c-primary-light);color:var(--c-accent);font-size:26px;font-weight:700;display:grid;place-items:center;line-height:1}
.step h3{font-size:18px;font-weight:600}
.step p{margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--c-text-sub)}
/* ===================== 场景证明 ===================== */
.case-wrap{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:28px;align-items:stretch}
.case-main{background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);display:flex;flex-direction:column}
.case-main__img{aspect-ratio:16/9;overflow:hidden}
.case-main__img img{width:100%;height:100%;object-fit:cover}
.case-main__body{padding:26px 28px 28px;display:flex;flex-direction:column;flex:1 1 auto}
.case-main__body h3{font-size:20px;line-height:1.45}
.case-main__body p{margin-top:12px;font-size:14.5px;line-height:1.8;color:var(--c-text-sub);flex:1 1 auto}
.case-bar{margin-top:20px;display:flex;align-items:center;gap:12px}
.case-bar__track{flex:1 1 auto;height:8px;border-radius:var(--r-pill);background:var(--c-primary-light);overflow:hidden}
.case-bar__fill{display:block;height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,#0B6FA4 0%,#3FA2D8 100%)}
.case-bar__num{font-size:14px;font-weight:600;color:var(--c-primary);flex:0 0 auto}
.case-side{display:grid;grid-template-rows:1fr 1fr;gap:28px}
.case-mini{display:grid;grid-template-columns:132px minmax(0,1fr);gap:18px;align-items:center;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);padding:14px;box-shadow:var(--sh-card);transition:transform .2s ease,box-shadow .2s ease}
.case-mini:hover{transform:translateY(-3px);box-shadow:var(--sh-hover)}
.case-mini__img{aspect-ratio:4/3;border-radius:10px;overflow:hidden;background:var(--c-primary-light)}
.case-mini__img img{width:100%;height:100%;object-fit:cover}
.case-mini h4{font-size:15.5px;font-weight:600;line-height:1.5}
.case-mini p{margin-top:6px;font-size:13.5px;line-height:1.65;color:var(--c-text-sub)}
.stat-band{margin-top:28px;background:var(--c-primary-light);border-radius:var(--r-card);display:grid;grid-template-columns:repeat(3,minmax(0,1fr));overflow:hidden}
.stat{position:relative;padding:28px 18px;text-align:center}
.stat + .stat::before{content:"";position:absolute;left:0;top:26px;bottom:26px;width:1px;background:#CFE4F3}
.stat__num{font-size:32px;font-weight:600;color:var(--c-primary);line-height:1.1}
.stat__num em{font-style:normal;font-size:18px;margin-left:2px}
.stat__label{margin-top:8px;font-size:14px;color:var(--c-text-sub)}
/* ===================== 徽章与标签 ===================== */
.badge{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:var(--r-pill);background:var(--c-primary-light);color:var(--c-primary);font-size:12.5px;font-weight:600;line-height:1}
.badge--accent{background:var(--c-accent-light);color:var(--c-accent-dark)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:32px}
.tag{display:inline-flex;align-items:center;height:36px;padding:0 18px;border-radius:var(--r-pill);border:1px solid var(--c-border);background:#fff;color:var(--c-text-sub);font-size:14px;cursor:default;transition:all .18s ease}
.tag.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600}
/* ===================== 资讯列表 ===================== */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;height:100%}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:#CFE4F3;text-decoration:none}
.news-card__cover{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,#E9F4FB 0%,#DCEDF8 100%);display:grid;place-items:center;color:#8CBEDC;font-size:28px}
.news-card__badge{position:absolute;left:14px;top:14px;display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:var(--r-pill);background:rgba(255,255,255,.92);color:var(--c-primary);font-size:12.5px;font-weight:600}
.news-card__body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.news-card__body h3{font-size:16.5px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:49px}
.news-card:hover .news-card__body h3{color:var(--c-primary)}
.news-card__body p{margin-top:10px;font-size:14px;line-height:1.7;color:var(--c-text-sub);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1 1 auto}
.news-card__meta{margin-top:16px;padding-top:14px;border-top:1px solid var(--c-border);display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--c-text-sub)}
.news-card__more{color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.news-card:hover .news-card__more i{transform:translateX(3px)}
.news-card__more i{transition:transform .2s ease}
.empty-state{grid-column:1 / -1;text-align:center;padding:58px 24px;background:#fff;border:1px dashed #CFE0EC;border-radius:var(--r-card);color:var(--c-text-sub)}
.empty-state i{font-size:34px;color:#9FC7DF;display:block;margin-bottom:14px}
.empty-state p{font-size:15px}
.empty-state .btn{margin-top:18px}
/* ===================== FAQ ===================== */
.faq{max-width:860px;margin:0 auto;border-top:1px solid var(--c-border)}
.faq__item{border-bottom:1px solid var(--c-border)}
.faq__q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 4px;background:none;border:0;cursor:pointer;text-align:left;font-size:18px;font-weight:600;color:var(--c-text);line-height:1.5}
.faq__q:hover{color:var(--c-primary)}
.faq__icon{position:relative;flex:0 0 22px;width:22px;height:22px}
.faq__icon::before,.faq__icon::after{content:"";position:absolute;background:var(--c-primary);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.faq__icon::before{top:10px;left:0;width:22px;height:2px}
.faq__icon::after{top:0;left:10px;width:2px;height:22px}
.faq__item.is-open .faq__icon::after{transform:rotate(90deg);opacity:0}
.faq__a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq__item.is-open .faq__a{max-height:400px}
.faq__a p{padding:0 56px 22px 4px;font-size:16px;line-height:1.8;color:var(--c-text-sub)}
/* ===================== CTA ===================== */
.cta-section{padding:0 0 var(--sp-section)}
.cta-panel{background:linear-gradient(135deg,#084E76 0%,#0B6FA4 100%);border-radius:20px;padding:56px;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,0.9fr);gap:48px;align-items:center;color:#fff}
.cta-panel h2{color:#fff;font-size:clamp(22px,2.8vw,30px);line-height:1.35}
.cta-panel__desc{margin-top:14px;font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.82);max-width:32em}
.cta-points{margin-top:26px;display:grid;gap:12px}
.cta-point{display:flex;align-items:flex-start;gap:10px;font-size:14.5px;color:rgba(255,255,255,.9)}
.cta-point i{color:var(--c-accent);margin-top:4px}
.form-card{background:#fff;border-radius:16px;padding:28px;box-shadow:0 18px 40px rgba(4,40,64,.24)}
.form-card h3{font-size:18px;font-weight:600;color:var(--c-text)}
.form-card > p{margin-top:6px;font-size:13.5px;color:var(--c-text-sub)}
.form-row{margin-top:16px}
.form-row label{display:block;font-size:13.5px;font-weight:600;color:var(--c-text);margin-bottom:6px}
.form-row input,.form-row select,.form-row textarea{width:100%;min-height:44px;padding:10px 13px;border:1px solid var(--c-border);border-radius:var(--r-btn);background:#fff;transition:border-color .18s ease,box-shadow .18s ease}
.form-row textarea{min-height:84px;resize:vertical;line-height:1.6}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(11,111,164,.12)}
.form-card .btn{width:100%;margin-top:20px}
.form-note{margin-top:12px;font-size:12px;line-height:1.7;color:var(--c-text-sub)}
.form-msg{margin-top:12px;font-size:13px;color:var(--c-success);display:none}
.form-msg.is-show{display:block}
/* ===================== 页脚 ===================== */
.footer{background:var(--c-primary-dark);color:rgba(255,255,255,.76);font-size:14px}
.footer__top{padding:64px 0 48px}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer__brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer__brand .brand__mark{background:linear-gradient(135deg,#1287C4 0%,#0B6FA4 100%)}
.footer__brand span{color:#fff;font-size:16px;font-weight:700}
.footer__intro{line-height:1.85;color:rgba(255,255,255,.7);max-width:30em}
.footer h4{color:#fff;font-size:14px;font-weight:600;margin-bottom:16px;letter-spacing:.2px}
.footer__links a{display:block;padding:5px 0;color:rgba(255,255,255,.76);line-height:1.7}
.footer__links a:hover{color:var(--c-accent);text-decoration:none}
.footer__contact p{line-height:2}
.footer__contact a{color:rgba(255,255,255,.86)}
.footer__contact a:hover{color:var(--c-accent);text-decoration:none}
.footer__bottom{background:rgba(0,0,0,.14);border-top:1px solid rgba(255,255,255,.12);padding:16px 0}
.footer__bottom-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:rgba(255,255,255,.62)}
/* ===================== 移动端抽屉 ===================== */
.drawer-mask{position:fixed;inset:0;background:rgba(8,40,60,.42);opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:190}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);background:#fff;z-index:200;transform:translateX(102%);transition:transform .28s ease;padding:20px 18px;overflow-y:auto;box-shadow:-8px 0 30px rgba(8,78,118,.18);display:flex;flex-direction:column}
.drawer.is-open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer__head span{font-size:15px;font-weight:700;color:var(--c-primary-dark)}
.drawer__close{width:44px;height:44px;border:1px solid var(--c-border);border-radius:10px;background:#fff;cursor:pointer;display:grid;place-items:center;color:var(--c-text)}
.drawer__link{position:relative;display:flex;align-items:center;height:52px;padding:0 14px;border-radius:8px;color:var(--c-text);font-size:16px}
.drawer__link:hover{background:var(--c-primary-light);text-decoration:none;color:var(--c-primary)}
.drawer__link.active{color:var(--c-primary);font-weight:600;background:var(--c-primary-light)}
.drawer__link.active::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:2px;background:var(--c-primary)}
.drawer__divider{height:1px;background:var(--c-border);margin:14px 0}
.drawer__actions{display:grid;gap:10px;margin-top:auto;padding-top:20px}
/* ===================== 响应式 ===================== */
@media (max-width:1199px){
  :root{--sp-section:80px}
  .nav__menu a{padding:0 9px;font-size:14px}
  .container{padding:0 20px}
}
@media (max-width:1023px){
  :root{--sp-section:66px}
  .nav__menu{display:none}
  .nav-toggle{display:flex}
  .nav__right .btn{display:none}
  .hero__inner{grid-template-columns:1fr;gap:44px}
  .hero h1{max-width:none}
  .hero__media{order:2}
  .float-card{right:12px;bottom:-20px}
  .entry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .case-wrap{grid-template-columns:1fr}
  .case-side{grid-template-rows:none;grid-template-columns:1fr 1fr}
  .cta-panel{grid-template-columns:1fr;gap:34px;padding:40px}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px 24px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 20px}
  .step:not(:last-child)::before{display:none}
}
@media (max-width:767px){
  :root{--sp-section:52px}
  .topbar__tip,.topbar__sep{display:none}
  .topbar__links{gap:12px}
  .hero{padding:42px 0 74px}
  .hero__lead{font-size:15.5px}
  .hero__trust{gap:10px 20px}
  .case-side{grid-template-columns:1fr}
  .stat-band{grid-template-columns:1fr}
  .stat + .stat::before{left:20px;right:20px;top:0;bottom:auto;width:auto;height:1px}
  .stat{padding:22px 18px}
  .faq__q{font-size:16.5px}
  .faq__a p{padding-right:12px}
  .cta-panel{padding:30px 22px;border-radius:16px}
  .form-card{padding:22px}
}
@media (max-width:639px){
  .container{padding:0 16px}
  .entry-grid,.news-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .hero__actions .btn{width:100%}
  .float-card{position:static;margin-top:16px;right:auto;bottom:auto}
  .footer__grid{grid-template-columns:1fr}
  .case-mini{grid-template-columns:104px minmax(0,1fr);gap:14px}
  .footer__bottom-inner{flex-direction:column;align-items:flex-start;gap:6px}
}
@media (max-width:480px){
  .hero h1{font-size:26px}
  .sec-head h2{font-size:22px}
  .stat__num{font-size:26px}
}

/* roulang page: category1 */
:root{
  --primary:#0B6FA4;
  --primary-dark:#084E76;
  --primary-light:#E9F4FB;
  --accent:#FF8A3D;
  --accent-dark:#E5701F;
  --accent-light:#FFF1E6;
  --text:#17222E;
  --muted:#5C6B7A;
  --border:#E3EAF2;
  --bg:#F6F9FC;
  --card:#FFFFFF;
  --success:#1FA971;
  --warn:#F2B33D;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-card:0 2px 8px rgba(11,111,164,.06);
  --shadow-hover:0 10px 28px rgba(11,111,164,.12);
  --shadow-nav:0 2px 10px rgba(11,111,164,.08);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  letter-spacing:0;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,box-shadow .18s ease;}
a:hover{color:var(--primary-dark);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;color:var(--text);line-height:1.3;letter-spacing:0;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--alt{background:#FFFFFF;}
.section--tight{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:30px;margin-bottom:14px;}
.section-head p{color:var(--muted);font-size:16px;}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--primary);background:var(--primary-light);border-radius:999px;padding:5px 14px;margin-bottom:16px;}

/* 信息条 */
.info-bar{background:var(--primary-dark);color:#FFFFFF;font-size:13px;}
.info-bar__inner{display:flex;align-items:center;justify-content:space-between;min-height:38px;gap:16px;}
.info-bar__left{display:flex;align-items:center;gap:14px;min-width:0;}
.info-bar__domain{font-weight:600;letter-spacing:.02em;white-space:nowrap;}
.info-bar__tip{color:rgba(255,255,255,.78);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.info-bar__right{display:flex;align-items:center;gap:10px;white-space:nowrap;}
.info-bar__right a{color:#FFFFFF;opacity:.92;}
.info-bar__right a:hover{color:var(--accent);opacity:1;}
.info-bar__sep{color:rgba(255,255,255,.35);}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:#FFFFFF;border-bottom:1px solid var(--border);transition:box-shadow .2s ease;}
.site-header.is-scrolled{box-shadow:var(--shadow-nav);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);flex-shrink:0;}
.brand:hover{color:var(--text);}
.brand__mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#FFFFFF;font-weight:700;font-size:18px;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.brand__text{font-size:19px;font-weight:700;letter-spacing:.01em;}
.nav__menu{display:flex;align-items:center;gap:6px;flex-wrap:wrap;}
.nav__menu a{position:relative;display:inline-flex;align-items:center;min-height:44px;padding:0 12px;font-size:15px;color:var(--text);border-radius:8px;}
.nav__menu a:hover{color:var(--primary);background:var(--primary-light);}
.nav__menu a::after{content:"";position:absolute;left:50%;bottom:6px;width:0;height:2px;background:var(--primary);border-radius:2px;transform:translateX(-50%);transition:width .2s ease;}
.nav__menu a.active{color:var(--primary);font-weight:600;}
.nav__menu a.active::after{width:20px;}
.nav__right{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--border);background:#FFFFFF;border-radius:10px;color:var(--text);font-size:18px;align-items:center;justify-content:center;}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary);}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;transition:all .18s ease;cursor:pointer;line-height:1;}
.btn-primary{background:var(--accent);color:#FFFFFF;border-color:var(--accent);}
.btn-primary:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#FFFFFF;transform:translateY(-1px);}
.btn-ghost{background:#FFFFFF;color:var(--primary);border-color:var(--primary);}
.btn-ghost:hover{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary-dark);transform:translateY(-1px);}
.btn-light{background:#FFFFFF;color:var(--primary-dark);border-color:#FFFFFF;}
.btn-light:hover{background:var(--accent);color:#FFFFFF;border-color:var(--accent);transform:translateY(-1px);}
.btn-sm{min-height:40px;padding:0 16px;font-size:14px;}

/* 页头横幅 */
.page-hero{background:linear-gradient(180deg,#E9F4FB 0%,#F6F9FC 100%);position:relative;overflow:hidden;border-bottom:1px solid var(--border);}
.page-hero::before{content:"";position:absolute;inset:0;background-image:url(/assets/images/backpic/back-1.webp);background-size:cover;background-position:center;opacity:.14;}
.page-hero__inner{position:relative;padding:64px 0 56px;max-width:840px;}
.page-hero h1{font-size:40px;line-height:1.25;margin-bottom:16px;}
.page-hero__lead{font-size:17px;color:var(--muted);max-width:660px;}
.page-hero__tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.tag-anchor{display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 16px;background:#FFFFFF;border:1px solid var(--border);border-radius:999px;font-size:14px;color:var(--text);box-shadow:var(--shadow-card);}
.tag-anchor i{color:var(--primary);font-size:13px;}
.tag-anchor:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px);}

/* 图文交替 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split + .split{margin-top:72px;}
.split__media{border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--shadow-card);border:1px solid var(--border);background:var(--primary-light);}
.split__media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
.split__body h2{font-size:30px;margin-bottom:16px;}
.split__body p{color:var(--muted);margin-bottom:16px;}
.split--reverse .split__media{order:2;}
.split--reverse .split__body{order:1;}
.plain-list{display:grid;gap:10px;margin-top:4px;}
.plain-list li{position:relative;padding-left:22px;color:var(--muted);font-size:15px;line-height:1.7;}
.plain-list li::before{content:"";position:absolute;left:6px;top:11px;width:6px;height:6px;border-radius:50%;background:var(--primary);}
.section--alt .plain-list li{color:var(--muted);}

/* 清单卡 */
.check-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);padding:24px;height:100%;box-shadow:var(--shadow-card);transition:transform .2s ease,box-shadow .2s ease;}
.check-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.check-card__index{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:var(--primary-light);color:var(--primary);font-weight:700;font-size:16px;margin-bottom:16px;}
.check-card h3{font-size:18px;margin-bottom:10px;}
.check-card p{color:var(--muted);font-size:15px;line-height:1.7;}

/* 数据条 */
.stat-band{background:var(--primary-light);border-radius:var(--radius-card);padding:28px 24px;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:48px;}
.stat-band__item{text-align:center;position:relative;}
.stat-band__item + .stat-band__item::before{content:"";position:absolute;left:0;top:12%;height:76%;width:1px;background:#CFE4F1;}
.stat-band__num{font-size:32px;font-weight:600;color:var(--primary);line-height:1.2;}
.stat-band__label{font-size:14px;color:var(--muted);margin-top:4px;}

/* FAQ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--border);}
.faq-item:first-child{border-top:1px solid var(--border);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;background:none;border:0;padding:20px 0;text-align:left;font-size:18px;font-weight:600;color:var(--text);min-height:44px;}
.faq-q:hover{color:var(--primary);}
.faq-q .faq-icon{flex-shrink:0;width:28px;height:28px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:14px;transition:transform .2s ease;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--accent-light);color:var(--accent-dark);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.faq-a__inner{padding:0 0 22px;color:var(--muted);font-size:16px;line-height:1.8;max-width:720px;}

/* CTA */
.cta-panel{background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 100%);color:#FFFFFF;border-radius:20px;padding:56px;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
.cta-panel h2{color:#FFFFFF;font-size:30px;margin-bottom:14px;}
.cta-panel__lead{color:rgba(255,255,255,.85);font-size:16px;margin-bottom:24px;}
.cta-points{display:grid;gap:12px;}
.cta-points li{display:flex;align-items:flex-start;gap:10px;color:rgba(255,255,255,.92);font-size:15px;}
.cta-points i{color:var(--accent);margin-top:5px;font-size:14px;}
.cta-form{background:#FFFFFF;border-radius:16px;padding:26px;color:var(--text);box-shadow:0 12px 32px rgba(4,40,62,.22);}
.cta-form h3{font-size:19px;margin-bottom:6px;}
.cta-form__hint{font-size:13px;color:var(--muted);margin-bottom:18px;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text);margin-bottom:6px;}
.field input,.field select,.field textarea{width:100%;height:44px;border:1px solid var(--border);border-radius:var(--radius-btn);padding:0 14px;font-size:15px;color:var(--text);background:#FFFFFF;transition:border-color .18s ease,box-shadow .18s ease;font-family:inherit;}
.field textarea{height:auto;padding:12px 14px;resize:vertical;min-height:88px;line-height:1.6;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(11,111,164,.12);}
.cta-form .btn{width:100%;}
.privacy-note{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.6;}
.form-msg{margin-top:12px;font-size:13px;color:var(--success);display:none;}
.form-msg.is-visible{display:block;}

/* 页脚 */
.footer{background:var(--primary-dark);color:rgba(255,255,255,.82);font-size:14px;}
.footer__top{padding:64px 0 48px;}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
.footer h4{color:#FFFFFF;font-size:14px;font-weight:600;margin-bottom:16px;}
.footer p{line-height:1.9;}
.footer__brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#FFFFFF;margin-bottom:14px;}
.footer__brand .brand__mark{background:rgba(255,255,255,.14);}
.footer__intro{color:rgba(255,255,255,.72);font-size:14px;line-height:1.9;max-width:340px;}
.footer__links{display:grid;gap:2px;}
.footer__links a{color:rgba(255,255,255,.82);line-height:2;}
.footer__links a:hover{color:var(--accent);}
.footer__contact a{color:rgba(255,255,255,.82);}
.footer__contact a:hover{color:var(--accent);}
.footer__bottom{background:rgba(0,0,0,.18);border-top:1px solid rgba(255,255,255,.12);padding:18px 0;}
.footer__bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.66);}

/* 响应式 */
@media (max-width:1024px){
  .section{padding:64px 0;}
  .page-hero h1{font-size:34px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split--reverse .split__media{order:1;}
  .split--reverse .split__body{order:2;}
  .split + .split{margin-top:56px;}
  .split__body h2{font-size:26px;}
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:40px;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav__menu{display:none;position:fixed;left:0;right:0;top:0;bottom:0;background:#FFFFFF;padding:84px 20px 24px;flex-direction:column;align-items:stretch;gap:0;overflow-y:auto;z-index:70;box-shadow:0 20px 40px rgba(8,78,118,.18);}
  .nav__menu.is-open{display:flex;}
  .nav__menu a{min-height:52px;padding:0 14px;border-bottom:1px solid var(--border);border-radius:0;font-size:16px;}
  .nav__menu a.active{background:var(--primary-light);}
  .nav__menu a.active::after{display:none;}
  .nav__menu a.active::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--primary);}
  .nav-toggle{display:flex;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:28px;}
  .section-head h2{font-size:24px;}
  .page-hero__inner{padding:44px 0 40px;}
  .page-hero h1{font-size:28px;}
  .page-hero__lead{font-size:15px;}
  .info-bar__tip{display:none;}
  .stat-band{grid-template-columns:1fr;gap:20px;padding:22px;}
  .stat-band__item + .stat-band__item::before{display:none;}
  .stat-band__item{border-top:1px solid #CFE4F1;padding-top:16px;}
  .stat-band__item:first-child{border-top:0;padding-top:0;}
  .brand__text{font-size:17px;}
  .btn{padding:0 18px;}
  .cta-panel{padding:30px 22px;border-radius:16px;}
  .cta-panel h2{font-size:24px;}
  .faq-q{font-size:16px;padding:18px 0;}
  .split__body h2{font-size:22px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .info-bar__inner{flex-direction:row;justify-content:space-between;}
  .info-bar__right{gap:8px;font-size:12px;}
  .page-hero h1{font-size:25px;}
  .footer__grid{grid-template-columns:1fr;}
  .footer__bottom-inner{flex-direction:column;align-items:flex-start;gap:6px;}
  .cta-form{padding:20px;}
}

/* roulang page: article */
:root{
  --c-primary:#0B6FA4;
  --c-primary-dark:#084E76;
  --c-primary-light:#E9F4FB;
  --c-accent:#FF8A3D;
  --c-accent-dark:#E5701F;
  --c-accent-light:#FFF1E6;
  --c-text:#17222E;
  --c-muted:#5C6B7A;
  --c-border:#E3EAF2;
  --c-bg:#F6F9FC;
  --c-card:#FFFFFF;
  --c-success:#1FA971;
  --c-warn:#F2B33D;
  --r-card:14px;
  --r-btn:10px;
  --r-badge:999px;
  --r-img:16px;
  --sh-card:0 2px 8px rgba(11,111,164,.06);
  --sh-hover:0 10px 28px rgba(11,111,164,.12);
  --sh-top:0 2px 10px rgba(11,111,164,.08);
  --w-container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
  font-size:16px;line-height:1.75;color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--c-primary-dark);text-decoration:underline}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.3;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0}
button,input,select,textarea{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:0;background:none}
.container{width:100%;max-width:var(--w-container);margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--alt{background:var(--c-card)}
.eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--c-primary);background:var(--c-primary-light);border-radius:var(--r-badge);padding:5px 14px;letter-spacing:.02em}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:30px;margin-bottom:12px}
.section-head p{color:var(--c-muted);font-size:16px}
.text-muted{color:var(--c-muted)}

/* 顶部信息条 */
.topbar{background:var(--c-primary-dark);color:#fff;font-size:13px;min-height:38px}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;padding-top:6px;padding-bottom:6px;flex-wrap:wrap}
.topbar__left{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.topbar__domain{font-weight:600;letter-spacing:.03em;color:#CDE7F7}
.topbar__tip{color:rgba(255,255,255,.78)}
.topbar__right{display:flex;align-items:center;gap:12px}
.topbar__right a{color:#fff;font-weight:600}
.topbar__right a:hover{color:var(--c-accent);text-decoration:none}
.topbar__sep{width:1px;height:12px;background:rgba(255,255,255,.32);display:inline-block}

/* 主导航 */
.site-header{
  position:sticky;top:0;z-index:50;background:#fff;
  border-bottom:1px solid var(--c-border);transition:box-shadow .2s ease;
}
.site-header.is-stuck{box-shadow:var(--sh-top)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.brand:hover{text-decoration:none}
.brand__mark{
  width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#0B6FA4,#084E76);color:#fff;font-size:17px;font-weight:700;
}
.brand__text{font-size:18px;font-weight:700;color:var(--c-text);letter-spacing:.01em}
.nav__menu{display:flex;align-items:center;gap:26px;flex:1;justify-content:center}
.nav__menu a{
  position:relative;display:inline-flex;align-items:center;height:68px;
  font-size:15px;color:var(--c-text);font-weight:500;white-space:nowrap;
}
.nav__menu a:hover{color:var(--c-primary);text-decoration:none}
.nav__menu a.active{color:var(--c-primary);font-weight:600}
.nav__menu a.active::after{
  content:"";position:absolute;left:50%;bottom:16px;transform:translateX(-50%);
  width:20px;height:2px;border-radius:2px;background:var(--c-primary);
}
.nav__right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--c-border);
  color:var(--c-primary);align-items:center;justify-content:center;font-size:18px;background:#fff;
}
.nav-toggle:hover{background:var(--c-primary-light)}
.nav-mask{
  display:none;position:fixed;inset:0;background:rgba(8,78,118,.42);z-index:55;
}
.nav-mask.is-open{display:block}
body.nav-locked{overflow:hidden}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;border:1.5px solid transparent;
  cursor:pointer;transition:background .2s ease,color .2s ease,transform .2s ease,border-color .2s ease;
  text-decoration:none;
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--c-accent);color:#fff}
.btn-primary:hover{background:var(--c-accent-dark);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-light);color:var(--c-primary-dark)}
.btn-light{background:#fff;color:var(--c-primary-dark)}
.btn-light:hover{background:var(--c-primary-light);color:var(--c-primary-dark);transform:translateY(-1px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-outline-light:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

/* 面包屑 */
.breadcrumb{background:#fff;border-bottom:1px solid var(--c-border)}
.breadcrumb__list{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:14px 0;font-size:13px;color:var(--c-muted)}
.breadcrumb__list a{color:var(--c-muted)}
.breadcrumb__list a:hover{color:var(--c-primary);text-decoration:none}
.breadcrumb__sep{color:#B8C6D2}
.breadcrumb__current{color:var(--c-text)}

/* 文章头部 */
.article-hero{background:linear-gradient(180deg,#FFFFFF 0%,#F2F8FC 100%);border-bottom:1px solid var(--c-border);padding:44px 0 40px}
.article-hero__grid{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;flex-wrap:wrap}
.article-hero__main{max-width:760px}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;
  border-radius:var(--r-badge);padding:5px 13px;background:var(--c-primary-light);color:var(--c-primary);
}
.badge--accent{background:var(--c-accent-light);color:var(--c-accent-dark)}
.article-title{font-size:40px;line-height:1.25;margin:16px 0 14px;font-weight:700}
.article-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:13.5px;color:var(--c-muted)}
.article-meta .sep{width:1px;height:12px;background:#CBD8E3;display:inline-block}
.article-hero__thumb{width:280px;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--sh-card);border:1px solid var(--c-border)}
.article-hero__thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}

/* 阅读主体 */
.article-layout{padding:56px 0 80px}
.article-card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:36px 40px;
}
.article-body{max-width:820px;margin:0 auto;font-size:17px;line-height:1.85;color:var(--c-text)}
.article-body > *:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;font-size:22px;font-weight:600;margin:40px 0 16px;padding-left:14px;line-height:1.45;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--c-primary);
}
.article-body h3{font-size:18px;font-weight:600;margin:28px 0 12px}
.article-body h4{font-size:16px;font-weight:600;margin:22px 0 10px}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:22px}
.article-body ul{list-style:none;padding-left:20px}
.article-body ul > li{position:relative;margin-bottom:8px;padding-left:4px}
.article-body ul > li::before{
  content:"";position:absolute;left:-14px;top:12px;width:6px;height:6px;border-radius:50%;background:var(--c-primary);
}
.article-body ol{padding-left:24px}
.article-body ol > li{margin-bottom:8px}
.article-body blockquote{
  margin:22px 0;padding:16px 20px;background:var(--c-primary-light);
  border-left:3px solid var(--c-primary);border-radius:0 10px 10px 0;color:#22405A;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;box-shadow:var(--sh-card);margin:22px 0}
.article-body figure{margin:22px 0}
.article-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:8px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px}
.article-body .table-wrap{overflow-x:auto;margin:22px 0;border:1px solid var(--c-border);border-radius:12px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-border);text-align:left;white-space:nowrap}
.article-body th{background:var(--c-primary-light);font-weight:600}
.article-body tr:last-child td{border-bottom:0}
.article-body strong{font-weight:600;color:var(--c-primary-dark)}
.article-body a{font-weight:500}

/* 空态 */
.article-empty{
  max-width:640px;margin:0 auto;text-align:center;padding:56px 24px;
  background:var(--c-primary-light);border-radius:var(--r-card);
}
.article-empty i{font-size:34px;color:var(--c-primary);margin-bottom:14px;display:block}
.article-empty h2{font-size:22px;margin-bottom:10px}
.article-empty p{color:var(--c-muted);margin-bottom:22px}

/* 文末 */
.article-foot{margin-top:40px;padding-top:28px;border-top:1px solid var(--c-border)}
.tag-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:26px}
.tag-row__label{font-size:13px;color:var(--c-muted);font-weight:600}
.tag{display:inline-flex;align-items:center;font-size:13px;padding:5px 13px;border-radius:var(--r-badge);background:var(--c-primary-light);color:var(--c-primary)}
.tag:hover{text-decoration:none;background:#D8EBF7;color:var(--c-primary-dark)}
.post-nav{display:grid;gap:0;margin-bottom:34px}
.post-nav a{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 0;border-bottom:1px solid var(--c-border);font-size:15px;color:var(--c-text);
}
.post-nav a:hover{color:var(--c-primary);text-decoration:none}
.post-nav a span:first-child{color:var(--c-muted);font-size:13.5px;flex-shrink:0}
.post-nav a span:last-child{text-align:right;font-weight:500}
.post-nav a:hover span:last-child{color:var(--c-primary)}
.foot-actions{display:flex;gap:12px;flex-wrap:wrap}

/* 辅助栏 */
.side-card{
  background:var(--c-card);border:1px solid var(--c-border);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:22px;margin-bottom:22px;
}
.side-card h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3 i{color:var(--c-primary);font-size:15px}
.side-list{list-style:none}
.side-list li + li{border-top:1px dashed var(--c-border)}
.side-list a{display:flex;align-items:center;gap:10px;padding:12px 0;font-size:14.5px;color:var(--c-text);min-height:44px}
.side-list a:hover{color:var(--c-primary);text-decoration:none}
.side-list i{color:var(--c-primary);font-size:12px}
.rec-item{display:flex;gap:12px;padding:12px 0;border-top:1px dashed var(--c-border)}
.rec-item:first-of-type{border-top:0;padding-top:0}
.rec-item img{width:76px;height:56px;object-fit:cover;border-radius:10px;flex-shrink:0}
.rec-item a{font-size:14px;font-weight:500;line-height:1.5;color:var(--c-text)}
.rec-item a:hover{color:var(--c-primary);text-decoration:none}
.rec-item span{display:block;font-size:12.5px;color:var(--c-muted);margin-top:4px;font-weight:400}
.side-cta{
  background:linear-gradient(160deg,#084E76,#0B6FA4);color:#fff;border:0;
  border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-card);
}
.side-cta h3{color:#fff}
.side-cta h3 i{color:var(--c-accent)}
.side-cta p{font-size:14px;color:rgba(255,255,255,.82);margin-bottom:16px}
.side-cta .btn + .btn{margin-top:10px}

/* 相关推荐 */
.related{padding:72px 0;background:var(--c-card);border-top:1px solid var(--c-border)}
.card-grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{
  display:flex;flex-direction:column;background:var(--c-card);border:1px solid var(--c-border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);
  transition:transform .22s ease,box-shadow .22s ease;height:100%;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);text-decoration:none}
.card__media{position:relative;overflow:hidden;background:var(--c-primary-light)}
.card__media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .45s ease}
.card:hover .card__media img{transform:scale(1.04)}
.card__badge{
  position:absolute;left:12px;top:12px;background:rgba(255,255,255,.92);color:var(--c-primary);
  font-size:12px;font-weight:600;padding:4px 11px;border-radius:var(--r-badge);
}
.card__body{padding:20px;display:flex;flex-direction:column;flex:1}
.card__title{font-size:17px;font-weight:600;color:var(--c-text);line-height:1.5;margin-bottom:8px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card__desc{font-size:14px;color:var(--c-muted);line-height:1.7;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card__foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--c-muted);padding-top:14px;border-top:1px solid var(--c-border);
}
.card__more{color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.card:hover .card__more i{transform:translateX(3px)}
.card__more i{transition:transform .2s ease}

/* FAQ */
.faq{max-width:860px;margin:0 auto}
.faq__item{border-bottom:1px solid var(--c-border)}
.faq__item:first-child{border-top:1px solid var(--c-border)}
.faq__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;font-size:18px;font-weight:600;color:var(--c-text);text-align:left;min-height:44px;
}
.faq__q:hover{color:var(--c-primary)}
.faq__icon{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;background:var(--c-primary-light);color:var(--c-primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:13px;
  transition:transform .2s ease,background .2s ease;
}
.faq__item.is-open .faq__icon{transform:rotate(45deg);background:var(--c-accent-light);color:var(--c-accent-dark)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .25s ease}
.faq__a-inner{padding:0 0 22px;font-size:16px;line-height:1.8;color:var(--c-muted);max-width:720px}

/* CTA 面板 */
.cta-band{padding:0 0 88px}
.cta-panel{
  background:linear-gradient(120deg,#084E76,#0B6FA4);border-radius:18px;padding:48px;
  display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;
}
.cta-panel h2{color:#fff;font-size:30px;margin-bottom:14px}
.cta-panel p{color:rgba(255,255,255,.82);font-size:15.5px;margin-bottom:20px}
.cta-points{display:flex;gap:22px;flex-wrap:wrap}
.cta-points span{display:inline-flex;align-items:center;gap:8px;color:#fff;font-size:14px}
.cta-points i{color:var(--c-accent)}
.cta-form{background:#fff;border-radius:var(--r-card);padding:26px;box-shadow:0 14px 32px rgba(4,40,62,.24)}
.cta-form h3{font-size:18px;margin-bottom:16px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--c-text);margin-bottom:6px}
.field input,.field textarea{
  width:100%;height:44px;border:1px solid var(--c-border);border-radius:var(--r-btn);
  padding:0 14px;font-size:14.5px;color:var(--c-text);background:#fff;transition:border-color .18s ease,box-shadow .18s ease;
}
.field textarea{height:auto;min-height:88px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 4px rgba(11,111,164,.14)}
.form-note{font-size:12px;color:var(--c-muted);margin-top:10px;line-height:1.6}
.form-tip{margin-top:12px;font-size:13px;color:var(--c-success);display:none}
.form-tip.is-show{display:block}

/* 页脚 */
.footer{background:var(--c-primary-dark);color:#fff}
.footer__top{padding:64px 0 40px}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px}
.footer h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer__brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;margin-bottom:14px}
.footer__brand .brand__mark{background:rgba(255,255,255,.14)}
.footer__intro{font-size:13.5px;line-height:1.9;color:rgba(255,255,255,.72);max-width:340px}
.footer__links{display:flex;flex-direction:column;gap:10px}
.footer__links a{color:rgba(255,255,255,.82);font-size:14px;line-height:1.6}
.footer__links a:hover{color:var(--c-accent);text-decoration:none}
.footer__contact p{font-size:14px;color:rgba(255,255,255,.82);line-height:2;margin:0}
.footer__contact a{color:rgba(255,255,255,.92)}
.footer__contact a:hover{color:var(--c-accent);text-decoration:none}
.footer__bottom{background:#063E5C;border-top:1px solid rgba(255,255,255,.12)}
.footer__bottom-inner{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding-top:18px;padding-bottom:18px;font-size:13px;color:rgba(255,255,255,.68);
}

/* 响应式 */
@media (max-width:1023px){
  .nav__menu{gap:18px}
  .nav__menu a{font-size:14px}
  .article-title{font-size:32px}
  .article-card{padding:28px 24px}
  .cta-panel{grid-template-columns:1fr;padding:36px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .topbar__tip,.topbar__right .topbar__sep,.topbar__right a:last-child{display:none}
  .nav__menu{
    position:fixed;top:0;right:-100%;width:80%;max-width:340px;height:100vh;
    background:#fff;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;
    padding:78px 20px 28px;box-shadow:-10px 0 28px rgba(8,78,118,.16);
    transition:right .26s ease;z-index:60;overflow-y:auto;
  }
  .nav__menu.is-open{right:0}
  .nav__menu a{
    height:52px;font-size:15px;border-bottom:1px solid var(--c-border);padding-left:4px;
  }
  .nav__menu a.active::after{display:none}
  .nav__menu a.active{border-left:3px solid var(--c-primary);padding-left:12px;background:var(--c-primary-light)}
  .nav-toggle{display:inline-flex}
  .nav__right .btn{display:none}
  .section{padding:64px 0}
  .section-head h2{font-size:24px}
  .article-hero{padding:32px 0 28px}
  .article-title{font-size:26px}
  .article-hero__thumb{width:100%;max-width:420px}
  .article-body{font-size:16px}
  .article-body h2{font-size:20px}
  .article-layout{padding:36px 0 56px}
  .grid-3{grid-template-columns:1fr}
  .cta-band{padding-bottom:64px}
  .cta-panel{padding:28px 22px;gap:26px}
  .cta-panel h2{font-size:24px}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .footer__top{padding:48px 0 32px}
  .related{padding:52px 0}
  .post-nav a{flex-direction:column;align-items:flex-start;gap:4px}
  .post-nav a span:last-child{text-align:left}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .article-title{font-size:24px}
  .article-card{padding:22px 18px}
  .article-hero__grid{gap:20px}
  .footer__grid{grid-template-columns:1fr}
  .foot-actions .btn{width:100%}
  .article-meta{font-size:12.5px}
  .cta-points{gap:12px}
}

/* roulang page: category3 */
:root{
  --primary:#0B6FA4;
  --primary-dark:#084E76;
  --primary-deep:#063D5C;
  --light:#E9F4FB;
  --orange:#FF8A3D;
  --orange-dark:#E5701F;
  --orange-light:#FFF1E6;
  --ink:#17222E;
  --muted:#5C6B7A;
  --line:#E3EAF2;
  --bg:#F6F9FC;
  --white:#FFFFFF;
  --success:#1FA971;
  --warn:#F2B33D;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow:0 2px 8px rgba(11,111,164,.06);
  --shadow-hover:0 10px 28px rgba(11,111,164,.12);
  --shadow-sticky:0 2px 10px rgba(11,111,164,.08);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  letter-spacing:0;
}
h1,h2,h3,h4,h5,figure,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--primary);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease;}
a:hover{color:var(--primary-dark);text-decoration:underline;text-underline-offset:3px;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
}
button{font:inherit;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%;}
.section{padding:88px 0;}
.section--alt{background:#FFFFFF;}
.section--tint{background:var(--bg);}
.section__head{max-width:780px;margin-bottom:40px;}
.section__head h2{font-size:30px;line-height:1.3;font-weight:700;margin-bottom:12px;}
.section__head p{font-size:16px;color:var(--muted);line-height:1.8;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--light);color:var(--primary-dark);
  border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;
  margin-bottom:16px;
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-sticky);}
.nav{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink);font-weight:700;}
.brand:hover{color:var(--ink);text-decoration:none;}
.brand__mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,#0B6FA4,#084E76);
  color:#fff;display:grid;place-items:center;
  font-size:17px;font-weight:700;flex:0 0 auto;
}
.brand__text{font-size:17px;white-space:nowrap;}
.nav__menu{display:flex;align-items:center;gap:22px;margin-left:auto;}
.nav__menu a{
  position:relative;font-size:14px;color:var(--muted);padding:6px 0;white-space:nowrap;
}
.nav__menu a:hover{color:var(--primary);text-decoration:none;}
.nav__menu a.active{color:var(--primary);font-weight:600;}
.nav__menu a.active::after{
  content:"";position:absolute;left:50%;bottom:-3px;width:20px;height:2px;
  background:var(--primary);border-radius:2px;transform:translateX(-50%);
}
.nav__right{display:flex;align-items:center;gap:12px;margin-left:6px;}
.nav-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-btn);
  color:var(--primary);font-size:18px;cursor:pointer;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;
  cursor:pointer;transition:all .2s ease;white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--orange);color:#fff;}
.btn-primary:hover{background:var(--orange-dark);color:#fff;}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-outline:hover{background:var(--light);color:var(--primary-dark);}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.5);}
.btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff;}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* ---------- 页面头部 ---------- */
.page-hero{
  background:linear-gradient(180deg,#E9F4FB 0%,#F6F9FC 100%);
  border-bottom:1px solid var(--line);
  padding:56px 0 48px;
}
.page-hero__inner{max-width:860px;}
.page-hero h1{
  font-size:clamp(26px,3.6vw,40px);line-height:1.25;font-weight:700;margin-bottom:16px;
}
.page-hero__sub{font-size:17px;line-height:1.8;color:var(--muted);max-width:740px;}
.page-hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.page-hero__meta{
  display:flex;flex-wrap:wrap;gap:24px;margin-top:26px;padding-top:22px;
  border-top:1px dashed var(--line);
}
.page-hero__meta div{font-size:14px;color:var(--muted);}
.page-hero__meta strong{display:block;font-size:20px;color:var(--primary);font-weight:600;line-height:1.4;}

/* ---------- 标签云 ---------- */
.tagcloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  background:#fff;border:1px solid var(--line);color:var(--primary-dark);
  border-radius:999px;padding:8px 16px;font-size:14px;line-height:1.4;
  transition:all .2s ease;
}
.tag:hover{border-color:var(--primary);color:var(--primary);text-decoration:none;transform:translateY(-1px);}
.tag--solid{background:var(--light);border-color:transparent;color:var(--primary-dark);font-weight:600;}
.tag--warm{background:var(--orange-light);border-color:transparent;color:var(--orange-dark);font-weight:600;}

/* ---------- 属性矩阵 ---------- */
.matrix{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.matrix__item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow);transition:all .25s ease;height:100%;
}
.matrix__item:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.matrix__no{
  display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;
  background:var(--light);color:var(--primary);font-weight:700;font-size:15px;margin-bottom:14px;
}
.matrix__item h3{font-size:17px;font-weight:600;line-height:1.5;margin-bottom:12px;}
.matrix__row{font-size:14px;line-height:1.75;color:var(--muted);margin-bottom:8px;}
.matrix__row span{color:var(--ink);font-weight:600;}

/* ---------- 宽幅配图 ---------- */
.figure-band{margin-top:44px;}
.figure-band img{
  width:100%;border-radius:var(--radius-img);box-shadow:var(--shadow);
  aspect-ratio:21/9;object-fit:cover;
}
.figure-band figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:12px;}

/* ---------- 对比卡 ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.compare__card{
  position:relative;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:30px;box-shadow:var(--shadow);
  overflow:hidden;
}
.compare__card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--primary);}
.compare__card--warm::before{background:var(--orange);}
.compare__card h3{font-size:22px;font-weight:600;line-height:1.4;margin-bottom:10px;}
.compare__lead{font-size:15px;color:var(--muted);line-height:1.8;margin-bottom:20px;}
.compare__list li{
  display:flex;gap:10px;font-size:15px;line-height:1.75;color:var(--ink);
  padding:10px 0;border-bottom:1px dashed var(--line);
}
.compare__list li:last-child{border-bottom:none;}
.compare__list i{color:var(--primary);font-size:14px;margin-top:7px;flex:0 0 auto;}
.compare__card--warm .compare__list i{color:var(--orange-dark);}
.compare__foot{
  margin-top:20px;background:var(--bg);border-radius:10px;padding:14px 16px;
  font-size:14px;line-height:1.75;color:var(--muted);
}
.compare__foot strong{color:var(--primary-dark);}

/* ---------- 规格表 ---------- */
.table-wrap{
  overflow-x:auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow);
  -webkit-overflow-scrolling:touch;
}
table.spec{width:100%;min-width:820px;border-collapse:collapse;}
table.spec th{
  background:var(--light);color:var(--primary-dark);font-size:14px;font-weight:600;
  text-align:left;padding:14px 18px;white-space:nowrap;
}
table.spec td{
  padding:16px 18px;border-top:1px solid var(--line);font-size:15px;
  line-height:1.7;color:var(--ink);vertical-align:top;
}
table.spec td:first-child{font-weight:600;color:var(--primary-dark);}
table.spec tbody tr:hover{background:#FBFDFF;}
.table-note{font-size:13px;color:var(--muted);margin-top:14px;}

/* ---------- 清单卡 ---------- */
.checklist{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;}
.checklist__item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;box-shadow:var(--shadow);transition:all .25s ease;
}
.checklist__item:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);}
.checklist__item i{font-size:20px;color:var(--primary);margin-bottom:12px;display:block;}
.checklist__item h4{font-size:16px;font-weight:600;margin-bottom:8px;}
.checklist__item p{font-size:14px;line-height:1.75;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin:0 auto;}
.faq details{border-bottom:1px solid var(--line);}
.faq details:first-of-type{border-top:1px solid var(--line);}
.faq summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 44px 20px 0;font-size:18px;font-weight:600;line-height:1.6;
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:"+";position:absolute;right:10px;top:50%;
  transform:translateY(-50%);font-size:24px;font-weight:400;color:var(--primary);
  transition:transform .2s ease;
}
.faq details[open] summary::after{transform:translateY(-50%) rotate(45deg);}
.faq__body{padding:0 44px 22px 0;font-size:16px;line-height:1.8;color:var(--muted);}

/* ---------- CTA ---------- */
.cta-panel{
  background:linear-gradient(135deg,#084E76 0%,#0B6FA4 100%);
  border-radius:20px;padding:48px;color:#fff;
  display:grid;grid-template-columns:1.1fr 1fr;gap:44px;align-items:start;
}
.cta-panel h2{font-size:28px;line-height:1.35;font-weight:700;margin-bottom:14px;color:#fff;}
.cta-panel p{font-size:15px;line-height:1.85;color:rgba(255,255,255,.85);}
.cta-points{margin-top:26px;display:grid;gap:14px;}
.cta-points li{display:flex;gap:12px;font-size:15px;line-height:1.7;color:rgba(255,255,255,.92);}
.cta-points i{color:var(--orange);font-size:16px;margin-top:5px;}
.cta-form{background:#fff;border-radius:var(--radius-card);padding:26px;color:var(--ink);}
.cta-form h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.cta-form .form-hint{font-size:13px;color:var(--muted);margin-bottom:18px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.field input,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-btn);
  padding:11px 14px;font-size:15px;color:var(--ink);background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field input{height:44px;padding:0 14px;}
.field textarea{min-height:96px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(11,111,164,.12);
}
.privacy{font-size:12px;color:var(--muted);line-height:1.7;margin-top:12px;}

/* ---------- 页脚 ---------- */
.footer{background:var(--primary-dark);color:#fff;}
.footer__top{padding:64px 0 48px;}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
.footer h4{font-size:14px;font-weight:600;margin-bottom:14px;color:#fff;}
.footer__brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;}
.footer__intro{font-size:14px;line-height:1.9;color:rgba(255,255,255,.75);margin-top:14px;max-width:340px;}
.footer__links{display:flex;flex-direction:column;gap:2px;}
.footer__links a{color:rgba(255,255,255,.82);font-size:14px;line-height:2;padding:2px 0;}
.footer__links a:hover{color:var(--orange);text-decoration:none;}
.footer__contact p{font-size:14px;line-height:2;color:rgba(255,255,255,.82);}
.footer__contact a{color:#fff;}
.footer__contact a:hover{color:var(--orange);text-decoration:none;}
.footer__bottom{background:var(--primary-deep);border-top:1px solid rgba(255,255,255,.1);}
.footer__bottom-inner{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  padding:18px 0;font-size:13px;color:rgba(255,255,255,.7);
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .section{padding:64px 0;}
  .container{padding:0 20px;}
  .nav__menu{gap:14px;}
  .nav__menu a{font-size:13px;}
  .matrix{grid-template-columns:repeat(2,1fr);}
  .checklist{grid-template-columns:repeat(3,1fr);}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:36px;}
  .section__head h2{font-size:24px;}
}
@media (max-width:768px){
  .nav-toggle{display:inline-flex;}
  .nav__menu{
    position:fixed;top:68px;left:0;right:0;bottom:0;
    background:#fff;flex-direction:column;align-items:stretch;
    gap:0;padding:10px 16px 24px;margin:0;
    transform:translateX(-100%);transition:transform .25s ease;
    overflow-y:auto;z-index:60;box-shadow:var(--shadow-sticky);
  }
  .nav__menu.is-open{transform:translateX(0);}
  .nav__menu a{
    display:flex;align-items:center;min-height:52px;padding:0 12px;
    font-size:16px;border-bottom:1px solid var(--line);color:var(--ink);
  }
  .nav__menu a.active{border-left:3px solid var(--primary);color:var(--primary);background:var(--light);}
  .nav__menu a.active::after{display:none;}
  .nav__right .btn-sm{min-height:38px;}
  .page-hero{padding:40px 0 36px;}
  .matrix{grid-template-columns:1fr;}
  .compare{grid-template-columns:1fr;}
  .checklist{grid-template-columns:1fr 1fr;}
  .section{padding:48px 0;}
  .figure-band img{aspect-ratio:16/9;}
  .faq__body{padding-right:0;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .brand__text{font-size:15px;}
  .checklist{grid-template-columns:1fr;}
  .footer__grid{grid-template-columns:1fr;}
  .cta-panel{padding:24px;}
  .page-hero__actions .btn{width:100%;}
  .footer__bottom-inner{flex-direction:column;}
}

/* roulang page: category2 */
:root{
  --primary:#0B6FA4;
  --primary-dark:#084E76;
  --primary-light:#E9F4FB;
  --accent:#FF8A3D;
  --accent-dark:#E5701F;
  --accent-light:#FFF1E6;
  --text:#17222E;
  --text-mute:#5C6B7A;
  --border:#E3EAF2;
  --bg:#F6F9FC;
  --card:#FFFFFF;
  --success:#1FA971;
  --warn:#F2B33D;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-sm:0 2px 8px rgba(11,111,164,.06);
  --shadow-md:0 10px 28px rgba(11,111,164,.12);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  letter-spacing:0;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--primary);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--primary-dark);text-decoration:underline;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid rgba(11,111,164,.45);outline-offset:2px;}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;letter-spacing:0;}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.25em;}
li{margin-bottom:.5em;}
button{font-family:inherit;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}

/* 顶部信息条 */
.topbar{background:var(--primary-dark);color:#fff;font-size:13px;}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;min-height:38px;gap:16px;}
.topbar__left{display:flex;align-items:center;gap:14px;min-width:0;}
.topbar__domain{font-weight:600;letter-spacing:.02em;white-space:nowrap;}
.topbar__tip{color:rgba(255,255,255,.78);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar__right{display:flex;align-items:center;gap:12px;white-space:nowrap;}
.topbar__right a{color:#fff;display:inline-flex;align-items:center;min-height:32px;padding:0 2px;}
.topbar__right a:hover{color:var(--accent);text-decoration:none;}
.topbar__sep{width:1px;height:14px;background:rgba(255,255,255,.32);}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .2s ease;}
.site-header.is-stuck{box-shadow:0 2px 10px rgba(11,111,164,.08);}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;}
.brand:hover{text-decoration:none;color:var(--text);}
.brand__mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
}
.brand__text{font-size:17px;letter-spacing:.01em;}
.nav__menu{display:flex;align-items:center;gap:26px;flex:1 1 auto;justify-content:center;}
.nav__menu a{
  position:relative;color:var(--text);font-size:15px;padding:22px 0;display:inline-block;
}
.nav__menu a:hover{color:var(--primary);text-decoration:none;}
.nav__menu a.active{color:var(--primary);font-weight:600;}
.nav__menu a.active::after{
  content:"";position:absolute;left:50%;bottom:14px;transform:translateX(-50%);
  width:20px;height:2px;border-radius:2px;background:var(--primary);
}
.nav__right{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--border);border-radius:10px;
  background:#fff;color:var(--text);font-size:17px;cursor:pointer;align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  text-decoration:none;line-height:1;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(255,138,61,.24);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;}
.btn-outline{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary-dark);}
.btn-ghost{background:#fff;color:var(--primary);border-color:var(--border);}
.btn-ghost:hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary-dark);}
.btn-light{background:#fff;color:var(--primary-dark);border-color:#fff;}
.btn-light:hover{background:var(--primary-light);color:var(--primary-dark);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;}
.btn-block{width:100%;}

/* 面包屑 */
.crumbs{background:#fff;border-bottom:1px solid var(--border);}
.crumbs__inner{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-mute);padding:14px 24px;flex-wrap:wrap;}
.crumbs a{color:var(--text-mute);}
.crumbs a:hover{color:var(--primary);}
.crumbs__sep{color:#B7C6D4;}

/* 页头 */
.page-hero{
  background:linear-gradient(180deg,#FFFFFF 0%,var(--primary-light) 100%);
  border-bottom:1px solid var(--border);
  padding:56px 0 52px;
}
.page-hero__grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:40px;align-items:center;}
.page-hero__eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--primary);
  background:#fff;border:1px solid var(--border);border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.page-hero h1{font-size:clamp(28px,3.6vw,40px);line-height:1.25;margin-bottom:16px;}
.page-hero p{font-size:16px;color:var(--text-mute);max-width:640px;margin-bottom:22px;}
.page-hero__tags{display:flex;flex-wrap:wrap;gap:10px;}
.page-hero__media{border-radius:var(--radius-img);overflow:hidden;box-shadow:var(--shadow-md);background:#fff;}
.page-hero__media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.page-hero__note{margin-top:12px;font-size:13px;color:var(--text-mute);text-align:center;}

/* 主体布局 */
.main-wrap{padding:64px 0 8px;}
.layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:44px;align-items:start;}

/* 侧栏目录 */
.toc{
  position:sticky;top:96px;
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);
  padding:22px 20px;box-shadow:var(--shadow-sm);
}
.toc h2{font-size:15px;font-weight:700;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--border);}
.toc ol{list-style:none;margin:0;padding:0;counter-reset:toc;}
.toc li{margin:0 0 2px;}
.toc a{
  display:flex;align-items:flex-start;gap:10px;padding:9px 10px;border-radius:8px;
  font-size:14px;color:var(--text-mute);line-height:1.5;border-left:3px solid transparent;
}
.toc a:hover{background:var(--primary-light);color:var(--primary);text-decoration:none;}
.toc a.is-current{background:var(--primary-light);color:var(--primary);font-weight:600;border-left-color:var(--primary);}
.toc__cta{margin-top:16px;padding-top:16px;border-top:1px solid var(--border);}
.toc__cta .btn{width:100%;}

/* 正文 */
.article-body{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:40px 44px;box-shadow:var(--shadow-sm);}
.article-body > p:first-of-type{font-size:17px;color:var(--text-mute);}
.article-body h2{
  font-size:24px;line-height:1.4;margin:44px 0 16px;padding-left:14px;position:relative;
}
.article-body h2::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;border-radius:3px;background:var(--primary);}
.article-body h2:first-of-type{margin-top:8px;}
.article-body h3{font-size:18px;line-height:1.5;margin:28px 0 10px;}
.article-body p{margin-bottom:1.1em;}
.article-body ul{list-style:none;padding-left:0;}
.article-body ul li{position:relative;padding-left:20px;}
.article-body ul li::before{
  content:"";position:absolute;left:4px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--primary);
}
.article-body ol{padding-left:1.4em;}
.article-body ol li::marker{color:var(--primary);font-weight:600;}
.callout{
  background:var(--primary-light);border-left:3px solid var(--primary);border-radius:0 10px 10px 0;
  padding:16px 20px;margin:24px 0;color:var(--text);font-size:15px;
}
.callout strong{color:var(--primary-dark);}
.figure{margin:32px 0;}
.figure img{width:100%;border-radius:var(--radius-img);box-shadow:var(--shadow-md);aspect-ratio:16/9;object-fit:cover;}
.figure figcaption{font-size:13px;color:var(--text-mute);text-align:center;margin-top:12px;}

/* 卡片组 */
.mini-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:24px 0 28px;}
.mini-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:20px;
  box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.mini-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#D5E5F2;}
.mini-card__icon{
  width:40px;height:40px;border-radius:10px;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:16px;margin-bottom:14px;
}
.mini-card h4{font-size:16px;margin-bottom:8px;}
.mini-card p{font-size:14px;color:var(--text-mute);margin:0;line-height:1.7;}

.badge{
  display:inline-flex;align-items:center;gap:6px;border-radius:999px;
  font-size:12px;font-weight:600;padding:4px 12px;line-height:1.6;
}
.badge-primary{background:var(--primary-light);color:var(--primary);}
.badge-accent{background:var(--accent-light);color:var(--accent-dark);}

/* 表格 */
.table-wrap{overflow-x:auto;margin:24px 0;border:1px solid var(--border);border-radius:var(--radius-card);background:#fff;}
table{border-collapse:collapse;width:100%;min-width:640px;font-size:14px;}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--border);vertical-align:top;}
thead th{background:var(--primary-light);color:var(--primary-dark);font-weight:600;font-size:14px;white-space:nowrap;}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover{background:#FAFCFE;}

/* 流程步骤 */
.steps{counter-reset:step;list-style:none;padding:0;margin:22px 0 28px;}
.steps li{
  position:relative;padding:0 0 20px 54px;margin:0;
}
.steps li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:0;width:36px;height:36px;border-radius:10px;
  background:var(--accent-light);color:var(--accent-dark);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
}
.steps li::after{
  content:"";position:absolute;left:17px;top:40px;bottom:4px;width:2px;background:var(--border);
}
.steps li:last-child{padding-bottom:0;}
.steps li:last-child::after{display:none;}
.steps li strong{display:block;font-size:16px;margin-bottom:4px;}
.steps li span{font-size:14px;color:var(--text-mute);}

/* FAQ */
.faq-list{margin-top:12px;border-top:1px solid var(--border);}
.faq-item{border-bottom:1px solid var(--border);}
.faq-q{
  width:100%;background:none;border:none;padding:20px 44px 20px 0;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);cursor:pointer;position:relative;line-height:1.6;
}
.faq-q:hover{color:var(--primary);}
.faq-q::after{
  content:"+";position:absolute;right:8px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--primary);transition:transform .2s ease;
}
.faq-item.is-open .faq-q::after{transform:translateY(-50%) rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease;}
.faq-a p{padding:0 44px 20px 0;margin:0;font-size:15px;color:var(--text-mute);}

/* CTA 条 */
.cta-band{
  margin:64px 0 0;
  background:linear-gradient(90deg,var(--primary-dark) 0%,var(--primary) 100%);
  border-radius:18px;color:#fff;overflow:hidden;
}
.cta-band__grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:40px;padding:44px;}
.cta-band h2{color:#fff;font-size:26px;line-height:1.35;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.82);font-size:15px;margin-bottom:20px;}
.cta-points{list-style:none;padding:0;margin:0;display:grid;gap:10px;}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:rgba(255,255,255,.9);margin:0;}
.cta-points i{color:var(--accent);margin-top:4px;}
.form-card{background:#fff;border-radius:var(--radius-card);padding:26px;box-shadow:0 18px 40px rgba(4,45,68,.22);}
.form-card h3{font-size:17px;margin-bottom:16px;}
.field{margin-bottom:14px;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--text);margin-bottom:6px;}
.field input,.field select,.field textarea{
  width:100%;min-height:44px;padding:10px 14px;font-size:14px;color:var(--text);
  border:1px solid var(--border);border-radius:var(--radius-btn);background:#fff;
  transition:border-color .18s ease,box-shadow .18s ease;font-family:inherit;
}
.field textarea{min-height:84px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 4px rgba(11,111,164,.14);
}
.form-privacy{font-size:12px;color:var(--text-mute);margin:12px 0 0;line-height:1.6;}

/* 帮助入口小卡 */
.help-card{
  margin-top:24px;background:var(--primary-light);border:1px solid #D3E7F5;border-radius:var(--radius-card);
  padding:22px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.help-card p{margin:0;font-size:15px;color:var(--primary-dark);}

/* 页脚 */
.footer{background:var(--primary-dark);color:#fff;margin-top:88px;}
.footer__top{padding:56px 0 40px;}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
.footer__brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;margin-bottom:14px;}
.footer__brand .brand__mark{background:rgba(255,255,255,.14);}
.footer__intro{color:rgba(255,255,255,.72);font-size:14px;line-height:1.85;margin:0;max-width:340px;}
.footer h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;}
.footer__links{display:grid;gap:2px;}
.footer__links a{color:rgba(255,255,255,.74);font-size:14px;line-height:2;display:inline-block;}
.footer__links a:hover{color:var(--accent);text-decoration:none;}
.footer__contact p{color:rgba(255,255,255,.74);font-size:14px;margin:0 0 8px;}
.footer__contact a{color:#fff;}
.footer__contact a:hover{color:var(--accent);text-decoration:none;}
.footer__bottom{background:rgba(0,0,0,.18);border-top:1px solid rgba(255,255,255,.1);}
.footer__bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 24px;font-size:13px;color:rgba(255,255,255,.62);flex-wrap:wrap;}

/* 移动抽屉 */
.mask{position:fixed;inset:0;background:rgba(8,40,60,.42);opacity:0;visibility:hidden;transition:opacity .2s ease;z-index:70;}
.mask.is-open{opacity:1;visibility:visible;}

@media (max-width:1024px){
  .layout{grid-template-columns:1fr;gap:28px;}
  .toc{position:static;}
  .toc ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;}
  .page-hero__grid{grid-template-columns:1fr;gap:28px;}
  .cta-band__grid{grid-template-columns:1fr;padding:34px;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .crumbs__inner{padding:12px 20px;}
  .footer__bottom-inner{padding:16px 20px;}
  .nav__menu{
    position:fixed;top:0;right:0;bottom:0;width:290px;max-width:84vw;background:#fff;
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;
    padding:80px 16px 24px;transform:translateX(102%);
    transition:transform .24s ease;z-index:80;overflow-y:auto;box-shadow:-8px 0 30px rgba(8,40,60,.16);
  }
  .nav__menu.is-open{transform:translateX(0);}
  .nav__menu a{
    min-height:52px;display:flex;align-items:center;padding:0 14px;font-size:15px;
    border-left:3px solid transparent;border-bottom:1px solid var(--border);
  }
  .nav__menu a.active{border-left-color:var(--primary);background:var(--primary-light);}
  .nav__menu a.active::after{display:none;}
  .nav-toggle{display:inline-flex;}
  .page-hero{padding:40px 0;}
  .main-wrap{padding:40px 0 0;}
  .article-body{padding:26px 20px;}
  .article-body h2{font-size:21px;margin-top:36px;}
  .mini-grid{grid-template-columns:1fr;}
  .toc ol{grid-template-columns:1fr;}
  .footer{margin-top:56px;}
  .footer__top{padding:40px 0 28px;}
  .cta-band{margin-top:44px;}
}
@media (max-width:640px){
  .topbar__tip,.topbar__right a:last-child,.topbar__sep{display:none;}
  .footer__grid{grid-template-columns:1fr;}
  .cta-band__grid{padding:26px 20px;}
  .cta-band h2{font-size:22px;}
  .form-card{padding:20px;}
  .help-card{padding:18px 20px;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .brand__text{font-size:15px;}
  .btn{padding:0 16px;font-size:14px;}
  .page-hero h1{font-size:26px;}
  .article-body{padding:22px 16px;}
  .faq-q{font-size:16px;padding-right:36px;}
}

/* roulang page: category4 */
:root{
  --brand:#0B6FA4;
  --brand-dark:#084E76;
  --brand-deep:#063E5D;
  --brand-light:#E9F4FB;
  --accent:#FF8A3D;
  --accent-dark:#E5701F;
  --accent-light:#FFF1E6;
  --text:#17222E;
  --text-muted:#5C6B7A;
  --border:#E3EAF2;
  --bg:#F6F9FC;
  --card:#FFFFFF;
  --success:#1FA971;
  --warn:#F2B33D;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-img:16px;
  --shadow-sm:0 2px 8px rgba(11,111,164,.06);
  --shadow-md:0 10px 28px rgba(11,111,164,.12);
  --shadow-lg:0 18px 40px rgba(8,78,118,.20);
  --container:1200px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease;}
a:hover{color:var(--brand-dark);text-decoration:underline;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
button{font:inherit;cursor:pointer;}
h1,h2,h3,h4,h5{color:var(--text);margin:0;letter-spacing:0;}
p{margin:0;}
ul,ol{margin:0;padding:0;}
[id]{scroll-margin-top:120px;}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%;}

/* 顶部信息条 */
.topbar{background:var(--brand-dark);color:#fff;font-size:13px;position:relative;z-index:50;}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:38px;}
.topbar__left{display:flex;align-items:center;min-width:0;}
.topbar__domain{font-weight:600;letter-spacing:.02em;white-space:nowrap;}
.topbar__tip{margin-left:12px;padding-left:12px;border-left:1px solid rgba(255,255,255,.28);color:rgba(255,255,255,.86);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar__right{display:flex;align-items:center;gap:14px;white-space:nowrap;}
.topbar__right a{color:#fff;opacity:.92;}
.topbar__right a:hover{color:#FFD9C0;opacity:1;text-decoration:none;}
.topbar__sep{width:1px;height:12px;background:rgba(255,255,255,.3);}

/* 主导航 */
.site-header{position:sticky;top:0;z-index:40;background:#fff;border-bottom:1px solid var(--border);transition:box-shadow .25s ease;}
.site-header.is-stuck{box-shadow:0 2px 10px rgba(11,111,164,.08);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;text-decoration:none;flex-shrink:0;}
.brand:hover{color:var(--text);text-decoration:none;}
.brand__mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;font-size:17px;font-weight:700;}
.brand__text{font-size:18px;white-space:nowrap;}
.nav__menu{display:flex;align-items:center;gap:26px;}
.nav__menu a{position:relative;padding:6px 0;font-size:15px;color:var(--text);text-decoration:none;white-space:nowrap;}
.nav__menu a:hover{color:var(--brand);text-decoration:none;}
.nav__menu a.active{color:var(--brand);font-weight:600;}
.nav__menu a.active::after{content:"";position:absolute;left:50%;bottom:-2px;width:20px;height:2px;background:var(--brand);border-radius:2px;transform:translateX(-50%);}
.nav__right{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--brand);font-size:17px;align-items:center;justify-content:center;}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border:1.5px solid transparent;border-radius:var(--radius-btn);font-size:15px;font-weight:600;text-decoration:none;transition:transform .18s ease,background-color .18s ease,box-shadow .18s ease,color .18s ease;}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px rgba(229,112,31,.24);}
.btn-primary:hover{background:var(--accent-dark);color:#fff;}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-light);color:var(--brand-dark);border-color:var(--brand-dark);}
.btn-white{background:#fff;color:var(--brand-dark);}
.btn-white:hover{background:var(--brand-light);color:var(--brand-dark);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:9px;}
.btn-block{width:100%;}

/* 分类页头 */
.page-hero{background:linear-gradient(180deg,#E9F4FB 0%,#F6F9FC 100%);border-bottom:1px solid var(--border);padding:52px 0 48px;}
.crumb{font-size:13px;color:var(--text-muted);margin-bottom:16px;}
.crumb a{color:var(--text-muted);}
.crumb a:hover{color:var(--brand);}
.crumb span{margin:0 8px;color:#B7C4D1;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand);background:#fff;border:1px solid #CFE6F4;border-radius:999px;padding:6px 14px;margin-bottom:16px;}
.page-hero h1{font-size:clamp(28px,4vw,40px);line-height:1.25;font-weight:700;margin-bottom:16px;}
.page-hero__lead{font-size:17px;line-height:1.8;color:var(--text-muted);max-width:620px;margin-bottom:26px;}
.page-hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:26px;}
.anchor-tags{display:flex;flex-wrap:wrap;gap:10px;}
.anchor-tags a{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--brand);background:#fff;border:1px solid #CFE6F4;border-radius:999px;padding:7px 14px;text-decoration:none;transition:all .2s ease;}
.anchor-tags a:hover{background:var(--brand);border-color:var(--brand);color:#fff;text-decoration:none;}
.hero-media{border-radius:var(--radius-img);overflow:hidden;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow-md);}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.hero-media__cap{font-size:13px;color:var(--text-muted);padding:12px 16px;background:#fff;border-top:1px solid var(--border);}

/* 板块 */
.section{padding:88px 0;}
.section--white{background:#fff;}
.section--soft{background:var(--bg);}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.section-title{font-size:clamp(23px,3vw,30px);line-height:1.3;font-weight:700;margin-bottom:14px;}
.section-sub{color:var(--text-muted);font-size:16px;line-height:1.8;}

/* 时间轴 */
.timeline-wrap{max-width:900px;margin:0 auto;}
.timeline{list-style:none;position:relative;}
.timeline::before{content:"";position:absolute;left:21px;top:14px;bottom:14px;width:2px;border-radius:2px;background:linear-gradient(180deg,rgba(11,111,164,.28),rgba(11,111,164,.85));}
.timeline__item{position:relative;padding-left:74px;padding-bottom:28px;}
.timeline__item:last-child{padding-bottom:0;}
.timeline__node{position:absolute;left:0;top:0;width:44px;height:44px;border-radius:50%;background:var(--accent);color:#fff;border:4px solid #fff;display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;box-shadow:0 6px 16px rgba(229,112,31,.26);}
.timeline__card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:22px 24px;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease;}
.timeline__card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.timeline__stage{display:inline-block;font-size:12px;font-weight:600;color:var(--brand);background:var(--brand-light);border-radius:999px;padding:3px 10px;margin-bottom:10px;}
.timeline__card h3{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:8px;}
.timeline__card p{font-size:15px;line-height:1.8;color:var(--text-muted);}

/* 各端差异卡片 */
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.device-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:26px 24px;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease;}
.device-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.device-card__icon{width:46px;height:46px;border-radius:12px;background:var(--brand-light);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:16px;}
.device-card h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.device-card__desc{font-size:14px;color:var(--text-muted);line-height:1.7;}
.device-card ul{list-style:none;margin-top:14px;padding-top:14px;border-top:1px solid var(--border);}
.device-card li{position:relative;padding-left:18px;font-size:14.5px;line-height:1.75;color:var(--text-muted);margin-bottom:9px;}
.device-card li:last-child{margin-bottom:0;}
.device-card li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--brand);}

/* 数据横带 */
.stats-band{margin-top:44px;background:var(--brand-light);border-radius:var(--radius-card);padding:28px 24px;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.stat{position:relative;text-align:center;}
.stat+.stat::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:1px;background:rgba(11,111,164,.18);}
.stat__num{font-size:32px;font-weight:600;color:var(--brand);line-height:1.2;}
.stat__num em{font-style:normal;color:var(--accent);}
.stat__label{font-size:14px;color:var(--text-muted);margin-top:4px;}

/* 图文清单 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.split__media{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-md);background:#fff;}
.split__media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.check-list{list-style:none;margin-top:24px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;padding:14px 0;border-bottom:1px solid var(--border);font-size:15px;line-height:1.75;color:var(--text-muted);}
.check-list li:last-child{border-bottom:0;}
.check-list i{color:var(--success);font-size:16px;margin-top:4px;}
.check-list strong{color:var(--text);font-weight:600;}

/* FAQ 双列卡 */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
.faq-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:22px 24px;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease;}
.faq-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
.faq-card h3{display:flex;gap:10px;align-items:flex-start;font-size:17px;font-weight:600;line-height:1.6;margin-bottom:10px;}
.faq-card h3 i{color:var(--accent);font-size:16px;margin-top:5px;}
.faq-card p{font-size:15px;line-height:1.8;color:var(--text-muted);}

/* CTA 面板 */
.cta-panel{background:linear-gradient(135deg,#084E76 0%,#0B6FA4 100%);border-radius:20px;padding:48px;color:#fff;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.cta-panel h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;margin-bottom:14px;}
.cta-panel__lead{color:rgba(255,255,255,.86);font-size:16px;line-height:1.8;margin-bottom:24px;}
.cta-points{list-style:none;display:grid;gap:12px;}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:15px;color:rgba(255,255,255,.92);}
.cta-points i{color:var(--accent);font-size:15px;}
.cta-form{background:#fff;border-radius:var(--radius-img);padding:26px;color:var(--text);box-shadow:var(--shadow-lg);}
.cta-form__title{font-size:17px;font-weight:600;margin-bottom:18px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--text);}
.field input,.field textarea{width:100%;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--text);font-size:15px;font-family:inherit;transition:border-color .2s ease,box-shadow .2s ease;}
.field input{height:44px;padding:0 14px;}
.field textarea{min-height:88px;padding:12px 14px;line-height:1.6;resize:vertical;}
.field input::placeholder,.field textarea::placeholder{color:#9AA9B7;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(11,111,164,.14);}
.form-note{font-size:12px;line-height:1.7;color:var(--text-muted);margin-top:12px;}

/* 页脚 */
.footer{background:var(--brand-dark);color:#DCE9F2;margin-top:0;}
.footer__top{padding:64px 0 44px;}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;}
.footer h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
.footer__brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:#fff;}
.footer__brand .brand__mark{background:#fff;color:var(--brand-dark);}
.footer__intro{font-size:14px;line-height:1.9;color:rgba(220,233,242,.85);margin-top:14px;}
.footer__links{display:flex;flex-direction:column;}
.footer__links a{font-size:14px;line-height:2;color:rgba(220,233,242,.9);text-decoration:none;}
.footer__links a:hover{color:var(--accent);text-decoration:none;}
.footer__contact p{font-size:14px;line-height:1.9;margin-bottom:8px;}
.footer__contact a{color:rgba(220,233,242,.9);}
.footer__contact a:hover{color:var(--accent);}
.footer__bottom{background:var(--brand-deep);padding:18px 0;font-size:13px;color:rgba(220,233,242,.75);}
.footer__bottom-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;}

/* 响应式 */
@media (max-width:1180px){
  .nav__menu{gap:16px;}
  .nav__menu a{font-size:14px;}
}
@media (max-width:1024px){
  .section{padding:64px 0;}
  .device-grid{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;gap:28px;}
  .split__media{order:-1;}
  .cta-panel{grid-template-columns:1fr;padding:36px;}
  .footer__grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:860px){
  .nav__menu{position:fixed;top:0;right:0;width:min(320px,86vw);height:100vh;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:26px 20px;transform:translateX(105%);transition:transform .28s ease;box-shadow:-10px 0 30px rgba(8,78,118,.16);z-index:60;overflow-y:auto;}
  .nav__menu.is-open{transform:none;}
  .nav__menu a{height:52px;display:flex;align-items:center;font-size:15px;padding:0 12px;border-radius:8px;border-left:3px solid transparent;}
  .nav__menu a.active{background:var(--brand-light);border-left-color:var(--brand);border-radius:0 8px 8px 0;}
  .nav__menu a.active::after{display:none;}
  .nav-toggle{display:inline-flex;}
  .faq-grid{grid-template-columns:1fr;}
  .stats-band{grid-template-columns:1fr;gap:20px;}
  .stat+.stat::before{left:12%;right:12%;top:0;bottom:auto;width:auto;height:1px;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .topbar__tip{display:none;}
  .page-hero{padding:36px 0 34px;}
  .page-hero__lead{font-size:16px;}
  .device-grid{grid-template-columns:1fr;}
  .timeline__item{padding-left:60px;}
  .timeline::before{left:19px;}
  .timeline__node{width:40px;height:40px;font-size:14px;}
  .cta-panel{padding:28px 22px;border-radius:16px;}
  .cta-form{padding:20px;}
  .footer__top{padding:48px 0 32px;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .page-hero__actions .btn{width:100%;}
  .brand__text{font-size:16px;}
  .footer__grid{grid-template-columns:1fr;gap:26px;}
  .section{padding:48px 0;}
  .section-head{margin-bottom:32px;}
  .timeline__card{padding:18px;}
  .stat__num{font-size:28px;}
}