/* roulang page: index */
:root{
  --c-ink:#0E1B2E; --c-body:#46536B; --c-muted:#8492A6;
  --c-primary:#1E4B8F; --c-primary-dark:#143567; --c-primary-soft:#E9F0FB;
  --c-accent:#2FA4B8; --c-gold:#D9A441;
  --c-bg:#F7F9FC; --c-surface:#FFFFFF; --c-line:#E4EAF3;
  --r-sm:8px; --r-md:12px; --r-lg:18px; --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,46,.05);
  --sh-2:0 4px 16px rgba(30,75,143,.08);
  --sh-3:0 12px 32px rgba(30,75,143,.12);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--c-bg);color:var(--c-body);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.75;font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,fieldset{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--c-primary);text-decoration:none;transition:color .18s ease}
img{display:block;max-width:100%;height:auto}
button,input,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
:focus-visible{outline:3px solid rgba(30,75,143,.25);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media(max-width:520px){.container{padding:0 20px}}

.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:#fff;color:var(--c-primary);padding:10px 18px;border-radius:0 0 var(--r-md) 0}
.skip-link:focus{left:0}

/* 排版 */
.h1{font-size:clamp(30px,4.2vw,48px);line-height:1.18;font-weight:700;letter-spacing:-.02em;color:var(--c-ink)}
.h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em;color:var(--c-ink)}
.h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--c-ink)}
.lead{font-size:17px;line-height:1.75;color:var(--c-body)}
.muted{font-size:14px;line-height:1.6;color:var(--c-muted)}
.eyebrow{font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--c-accent);text-transform:uppercase}

/* 导航 */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--c-line);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px}
@media(max-width:1023px){.nav-inner{height:60px}}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);font-weight:700;font-size:18px;letter-spacing:-.01em}
.brand-mark{display:inline-flex;color:var(--c-primary)}
.brand--light{color:#fff}
.brand--light .brand-mark{color:#8FB6E8}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-link{position:relative;display:inline-flex;align-items:center;gap:5px;font-size:16px;font-weight:500;color:var(--c-body);padding:6px 0}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .18s ease}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--c-primary);font-weight:600}
.nav-drop{position:relative}
.nav-drop-panel{position:absolute;top:calc(100% + 12px);left:-14px;min-width:210px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-3);padding:10px;display:none;flex-direction:column;gap:2px}
.nav-drop.is-open .nav-drop-panel{display:flex}
.nav-drop-panel a{padding:9px 12px;border-radius:var(--r-md);font-size:15px;color:var(--c-body)}
.nav-drop-panel a:hover{background:var(--c-primary-soft);color:var(--c-primary)}
.nav-tools{display:flex;align-items:center;gap:14px;margin-left:auto}
.nav-search{position:relative;display:flex;align-items:center;gap:8px;width:290px;height:40px;padding:0 10px 0 12px;background:#F2F5FA;border:1px solid var(--c-line);border-radius:var(--r-md);transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease}
.nav-search:focus-within{border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(30,75,143,.12)}
.nav-search svg{flex:none;color:var(--c-muted)}
.nav-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px}
.nav-search input::placeholder{color:var(--c-muted)}
.kbd{flex:none;font-size:12px;color:var(--c-muted);background:#fff;border:1px solid var(--c-line);border-radius:var(--r-sm);padding:1px 6px}
.nav-login{font-size:15px;font-weight:500;color:var(--c-body)}
.nav-login:hover{color:var(--c-primary)}
.nav-burger{display:none;width:44px;height:44px;align-items:center;justify-content:center;border:1px solid var(--c-line);border-radius:var(--r-md);color:var(--c-ink)}
.nav-burger span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.nav-burger span::before,.nav-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor}
.nav-burger span::before{top:-6px}
.nav-burger span::after{top:6px}
@media(max-width:1023px){
  .nav-menu,.nav-search,.nav-login{display:none}
  .nav-burger{display:inline-flex}
}

/* 抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(14,27,46,.4);opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;z-index:90}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);background:#fff;z-index:100;transform:translateX(102%);transition:transform .22s ease;padding:20px;display:flex;flex-direction:column;gap:18px;overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:40px;height:40px;border:1px solid var(--c-line);border-radius:var(--r-md);font-size:20px;line-height:1;color:var(--c-ink)}
.drawer-nav{display:flex;flex-direction:column;gap:4px}
.drawer-nav a{padding:12px 14px;border-radius:var(--r-md);font-size:16px;font-weight:500;color:var(--c-body)}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--c-primary-soft);color:var(--c-primary)}
.drawer .btn{margin-top:4px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border-radius:var(--r-md);border:1px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-2)}
.btn-primary:hover{background:var(--c-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-primary:active{transform:translateY(0)}
.btn-primary:disabled{background:#C7D1E0;color:#fff;box-shadow:none;cursor:not-allowed}
.btn-secondary{background:#fff;border-color:var(--c-line);color:var(--c-primary)}
.btn-secondary:hover{border-color:var(--c-primary);background:var(--c-primary-soft);color:var(--c-primary)}
.btn-ghost{background:transparent;color:var(--c-primary);padding:0 2px;min-height:auto}
.btn-ghost svg{transition:transform .18s ease}
.btn-ghost:hover svg{transform:translateX(3px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:14px}

/* 徽章 / 标签 */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;letter-spacing:.02em;padding:4px 10px;border-radius:var(--r-pill);background:var(--c-primary-soft);color:var(--c-primary)}
.badge-gold{background:rgba(217,164,65,.14);color:#9A7320}
.badge-outline{background:transparent;border:1px solid var(--c-line);color:var(--c-muted)}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;padding:5px 12px;border-radius:var(--r-pill);background:#fff;border:1px solid var(--c-line);color:var(--c-body)}

/* Hero */
.hero{position:relative;overflow:hidden;background:var(--c-bg);padding:56px 0 48px}
@media(min-width:1024px){.hero{padding:80px 0 72px}}
.hero::before{content:"";position:absolute;top:-60px;right:-60px;width:600px;height:560px;pointer-events:none;background-image:radial-gradient(circle,rgba(30,75,143,.6) 1px,transparent 1.3px);background-size:24px 24px;opacity:.06}
.hero-grid{position:relative;display:grid;gap:40px;grid-template-columns:1fr;align-items:center}
@media(min-width:1024px){.hero-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px}}
.hero-copy{max-width:560px}
.hero-copy .h1{margin-bottom:18px}
.hero-sub{font-size:17px;line-height:1.75;color:var(--c-body);margin-bottom:26px;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-3)}
.hero-media::after{content:"";position:absolute;inset:auto -18px -18px auto;width:120px;height:120px;border-radius:50%;background:radial-gradient(circle,rgba(47,164,184,.18),transparent 68%);pointer-events:none}
.trust{display:flex;flex-wrap:wrap;align-items:center;gap:0;border-top:1px solid var(--c-line);padding-top:22px}
.trust-item{padding:0 22px;border-left:1px solid var(--c-line)}
.trust-item:first-child{padding-left:0;border-left:0}
.trust-num{display:block;font-size:28px;font-weight:700;color:var(--c-ink);line-height:1.2}
.trust-label{font-size:13px;color:var(--c-muted)}
@media(max-width:639px){
  .trust{gap:16px 0}
  .trust-item{width:50%;padding:0 0 0 16px}
  .trust-item:nth-child(odd){padding-left:0;border-left:0}
}

/* 板块 */
.section{padding:56px 0}
@media(min-width:1024px){.section{padding:88px 0}}
.section--dark{background:var(--c-ink);color:#C9D6E8;position:relative;overflow:hidden}
.section--dark .h2,.section--dark .h3{color:#fff}
.section--dark::before{content:"";position:absolute;inset:0;pointer-events:none;background-image:radial-gradient(circle,rgba(143,182,232,.7) 1px,transparent 1.3px);background-size:32px 32px;opacity:.05}
.section-head{position:relative;display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px}
.section-head .h2{max-width:640px}
.section-head p{margin-top:12px;max-width:620px;font-size:16px;color:var(--c-body)}
.section--dark .section-head p{color:#A9BADA}

/* Bento */
.bento{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:768px){.bento{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){
  .bento{grid-template-columns:repeat(3,minmax(0,1fr));grid-auto-rows:auto}
  .bento-lg{grid-column:span 2;grid-row:span 2}
  .bento-wide{grid-column:1 / -1}
}
.card{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(30,75,143,.2)}
.bento-card{padding:26px;display:flex;flex-direction:column;gap:14px}
.bento-card p{font-size:15px;color:var(--c-body)}
.bento-lg img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r-lg) var(--r-lg) 0 0}
.bento-lg .bento-body{padding:26px}
.bento-num{font-size:15px;font-weight:700;color:var(--c-accent);letter-spacing:.06em}
.rank-list{display:grid;gap:0}
.rank-row{display:flex;align-items:center;gap:18px;padding:16px 0;border-bottom:1px solid var(--c-line)}
.rank-row:last-child{border-bottom:0}
.rank-index{font-size:15px;font-weight:700;color:var(--c-muted);width:26px;flex:none}
.rank-row img{width:88px;height:56px;object-fit:cover;border-radius:var(--r-sm);flex:none}
.rank-row h4{font-size:16px;font-weight:600;color:var(--c-ink)}
.rank-row .muted{display:block}
.rank-metric{margin-left:auto;font-size:14px;font-weight:600;color:var(--c-primary);white-space:nowrap}
@media(max-width:639px){
  .rank-row{flex-wrap:wrap;gap:12px}
  .rank-metric{margin-left:0}
}

/* 对比表 */
.table-wrap{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow-x:auto}
table.plan-table{width:100%;min-width:760px;border-collapse:separate;border-spacing:0}
table.plan-table th,table.plan-table td{padding:0 20px;height:54px;font-size:15px;text-align:center;border-bottom:1px solid var(--c-line)}
table.plan-table thead th{position:sticky;top:0;z-index:3;background:#fff;font-weight:600;color:var(--c-ink);height:66px}
table.plan-table tbody th{position:sticky;left:0;z-index:2;background:#fff;text-align:left;font-weight:500;color:var(--c-ink);min-width:180px}
table.plan-table tbody tr:last-child th,table.plan-table tbody tr:last-child td{border-bottom:0}
table.plan-table .col-featured{background:var(--c-primary-soft)}
table.plan-table thead .col-featured{background-color:var(--c-primary-soft);background-image:linear-gradient(var(--c-gold),var(--c-gold));background-repeat:no-repeat;background-size:100% 3px;background-position:top}
.plan-price{display:block;font-size:17px;font-weight:700;color:var(--c-ink);line-height:1.3}
.plan-price small{font-size:12px;font-weight:500;color:var(--c-muted)}
.mark-yes{color:var(--c-primary);font-weight:700}
.mark-no{color:var(--c-muted)}
.table-note{margin-top:14px;font-size:13px;color:var(--c-muted)}

/* 等级卡 */
.tiers{display:grid;gap:24px;grid-template-columns:1fr;align-items:start}
@media(min-width:1024px){.tiers{grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}}
.tier{position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:30px;display:flex;flex-direction:column;gap:18px;transition:transform .18s ease,box-shadow .18s ease}
.tier:hover{box-shadow:var(--sh-3)}
.tier-featured{box-shadow:var(--sh-3);border-color:rgba(30,75,143,.22)}
.tier-featured::before{content:"";position:absolute;top:0;left:24px;right:24px;height:3px;border-radius:0 0 3px 3px;background:var(--c-gold)}
@media(min-width:1024px){
  .tier-featured{margin-top:-22px;margin-bottom:-22px;padding-top:40px;padding-bottom:40px}
}
.tier-price{font-size:30px;font-weight:700;color:var(--c-ink);line-height:1.2}
.tier-price span{font-size:14px;font-weight:500;color:var(--c-muted)}
.tier-list{display:flex;flex-direction:column;gap:10px;font-size:14.5px}
.tier-list li{display:flex;gap:10px;align-items:flex-start;color:var(--c-body)}
.tier-list svg{flex:none;margin-top:5px;color:var(--c-primary)}

/* 专属内容预览 */
.lock-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:640px){.lock-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.lock-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.lock-card{position:relative;border-radius:var(--r-lg);overflow:hidden;background:#16263F;border:1px solid rgba(143,182,232,.18)}
.lock-card img{width:100%;aspect-ratio:16/10;object-fit:cover;opacity:.55}
.lock-veil{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(14,27,46,.45);transition:background .18s ease}
.lock-card:hover .lock-veil{background:rgba(14,27,46,.28)}
.lock-icon{width:52px;height:52px;border-radius:50%;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);display:flex;align-items:center;justify-content:center;color:#fff}
.lock-tag{position:absolute;top:14px;left:14px}
.lock-body{padding:18px 20px 22px}
.lock-body h3{font-size:17px;font-weight:600;color:#fff;line-height:1.45;margin-bottom:6px}
.lock-body p{font-size:13px;color:#A9BADA}
.lock-more{display:inline-flex;align-items:center;gap:6px;margin-top:12px;font-size:13px;font-weight:600;color:#8FB6E8;opacity:.75;transition:opacity .18s ease}
.lock-card:hover .lock-more{opacity:1}

/* CMS 内容列表 */
.post-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:640px){.post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.post-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.post-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(30,75,143,.2)}
.post-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.post-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-title{font-size:18px;line-height:1.5;font-weight:600}
.post-title a{color:var(--c-ink)}
.post-card:hover .post-title a{color:var(--c-primary)}
.post-excerpt{font-size:14px;line-height:1.7;color:var(--c-body);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--c-muted)}
.post-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--c-line)}
.empty{background:#fff;border:1px dashed var(--c-line);border-radius:var(--r-lg);padding:56px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px}
.empty-icon{width:52px;height:52px;border-radius:50%;background:var(--c-primary-soft);display:flex;align-items:center;justify-content:center;color:var(--c-primary)}

/* FAQ */
.faq{max-width:820px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 0;text-align:left;font-size:16px;font-weight:600;color:var(--c-ink)}
.faq-q:hover{color:var(--c-primary)}
.faq-q svg{flex:none;color:var(--c-muted);transition:transform .18s ease}
.faq-item.is-open .faq-q svg{transform:rotate(180deg);color:var(--c-primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .18s ease}
.faq-a p{padding:0 40px 22px 0;font-size:15px;line-height:1.8;color:var(--c-body)}

/* 表单 */
.join{background:var(--c-primary-soft);border-radius:var(--r-lg);padding:40px 28px;position:relative;overflow:hidden}
@media(min-width:768px){.join{padding:52px 48px}}
.join::before{content:"";position:absolute;inset:0;pointer-events:none;background-image:radial-gradient(circle,rgba(30,75,143,.55) 1px,transparent 1.3px);background-size:26px 26px;opacity:.06}
.join-inner{position:relative;max-width:720px;margin:0 auto}
.join-head{text-align:center;margin-bottom:28px}
.join-head p{margin-top:12px;font-size:15px;color:var(--c-body)}
.form-row{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}
.form-row label{font-size:14px;font-weight:600;color:var(--c-ink)}
.form-row input[type=text],.form-row input[type=email],.form-row input[type=tel]{height:48px;padding:0 16px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);outline:none;transition:border-color .18s ease,box-shadow .18s ease}
.form-row input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(30,75,143,.14)}
.seg{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);padding:6px}
.seg-item{position:relative;display:block}
.seg-item input{position:absolute;opacity:0;inset:0;cursor:pointer}
.seg-item span{display:flex;align-items:center;justify-content:center;min-height:40px;border-radius:var(--r-sm);font-size:14px;font-weight:600;color:var(--c-body);transition:background-color .18s ease,color .18s ease}
.seg-item input:checked + span{background:var(--c-primary);color:#fff}
.seg-item input:focus-visible + span{outline:3px solid rgba(30,75,143,.25);outline-offset:2px}
.check-row{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--c-muted);line-height:1.7;margin-bottom:22px}
.check-row input{margin-top:4px;width:16px;height:16px;accent-color:var(--c-primary)}
.form-status{margin-top:14px;font-size:13px;color:var(--c-primary);min-height:20px}

/* 页脚 */
.site-footer{background:var(--c-ink);color:#A9BADA;position:relative;overflow:hidden;border-top:1px solid rgba(143,182,232,.18);padding-top:64px}
.site-footer::before{content:"";position:absolute;inset:0;pointer-events:none;background-image:radial-gradient(circle,rgba(143,182,232,.6) 1px,transparent 1.3px);background-size:30px 30px;opacity:.06}
.footer-grid{position:relative;display:grid;gap:36px;grid-template-columns:1fr;padding-bottom:52px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 0.8fr 0.8fr 0.8fr 1.2fr;gap:32px}}
.footer-brand p{margin-top:14px;font-size:14px;line-height:1.7;max-width:320px}
.footer-col h3,.footer-sub h3{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;letter-spacing:.02em}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:#A9BADA}
.footer-col a:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px}
.sub-form{display:flex;gap:8px;flex-wrap:wrap}
.sub-form input{flex:1;min-width:150px;height:44px;padding:0 14px;border-radius:var(--r-md);border:1px solid rgba(143,182,232,.28);background:rgba(255,255,255,.06);color:#fff;outline:none}
.sub-form input::placeholder{color:#7E90AC}
.sub-form input:focus{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(47,164,184,.18)}
.sub-form .btn{min-height:44px}
.footer-note{margin-top:10px;font-size:12.5px;color:#7E90AC}
.footer-bottom{position:relative;border-top:1px solid rgba(143,182,232,.16);padding:20px 0}
.footer-bottom-inner{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:#7E90AC}
.footer-bottom-inner a{color:#A9BADA}
.footer-bottom-inner a:hover{color:var(--c-accent)}

/* 动效降级 */
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: article */
:root{
  --c-ink:#0E1B2E;
  --c-body:#46536B;
  --c-muted:#8492A6;
  --c-primary:#1E4B8F;
  --c-primary-dark:#143567;
  --c-primary-soft:#E9F0FB;
  --c-accent:#2FA4B8;
  --c-gold:#D9A441;
  --c-bg:#F7F9FC;
  --c-surface:#FFFFFF;
  --c-line:#E4EAF3;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,46,.05);
  --sh-2:0 4px 16px rgba(30,75,143,.08);
  --sh-3:0 12px 32px rgba(30,75,143,.12);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --nav-h:68px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-body);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{color:var(--c-ink);margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0 0 1.1em;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;height:auto;}
ul,ol{margin:0;padding:0;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(30,75,143,.25);border-radius:var(--r-sm);}
.num{font-variant-numeric:tabular-nums;}

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

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;background:#fff;color:var(--c-primary);
  padding:10px 16px;border-radius:0 0 var(--r-md) 0;box-shadow:var(--sh-3);font-size:14px;
}
.skip-link:focus{left:0;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{height:var(--nav-h);display:flex;align-items:center;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);font-weight:700;font-size:18px;letter-spacing:-.01em;white-space:nowrap;}
.brand-mark{display:inline-flex;color:var(--c-primary);}
.brand--light{color:#fff;}
.brand--light .brand-mark{color:var(--c-accent);}
.nav-menu{display:flex;align-items:center;gap:2px;margin-left:12px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:8px 12px;border-radius:10px;font-size:16px;font-weight:500;color:var(--c-body);
  transition:color .18s ease,background-color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .18s ease;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}
.nav-drop{position:relative;}
.nav-drop-panel{
  position:absolute;top:calc(100% + 10px);left:0;min-width:216px;padding:8px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-3);display:none;
}
.nav-drop.is-open .nav-drop-panel{display:block;}
.nav-drop-panel a{display:block;padding:10px 12px;border-radius:10px;font-size:15px;color:var(--c-body);transition:.16s;}
.nav-drop-panel a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:16px;}
.cmd-search{position:relative;display:flex;align-items:center;width:290px;}
.cmd-search .s-icon{position:absolute;left:12px;color:var(--c-muted);display:inline-flex;}
.cmd-search input{
  width:100%;height:40px;border-radius:var(--r-md);border:1px solid var(--c-line);
  background:#F2F5FA;padding:0 56px 0 38px;font-size:14px;color:var(--c-ink);
  transition:border-color .18s,background-color .18s,box-shadow .18s;
}
.cmd-search input::placeholder{color:var(--c-muted);}
.cmd-search input:focus{outline:none;background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(30,75,143,.18);}
.cmd-kbd{
  position:absolute;right:10px;font-size:12px;color:var(--c-muted);
  border:1px solid var(--c-line);background:#fff;border-radius:var(--r-sm);padding:2px 6px;line-height:1.3;
}
.ghost-link{font-size:15px;color:var(--c-body);transition:color .18s;}
.ghost-link:hover{color:var(--c-primary);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-md);border:1px solid var(--c-line);
  align-items:center;justify-content:center;color:var(--c-ink);
}
.nav-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);z-index:80;
  background:#fff;padding:22px;display:flex;flex-direction:column;gap:10px;
  transform:translateX(100%);transition:transform .22s ease;overflow-y:auto;box-shadow:var(--sh-3);
}
.mobile-drawer.is-open{transform:none;}
.mobile-drawer .nav-link{font-size:16px;padding:12px 10px;border-radius:var(--r-md);}
.mobile-drawer .nav-link::after{display:none;}
.mobile-drawer .nav-link.is-active{background:var(--c-primary-soft);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,27,46,.4);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-md);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-2);}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-primary:active{transform:translateY(0);}
.btn-primary[disabled]{background:#C7D1E0;color:#fff;box-shadow:none;cursor:not-allowed;transform:none;}
.btn-secondary{background:#fff;color:var(--c-primary);border-color:var(--c-line);}
.btn-secondary:hover{border-color:var(--c-primary);background:var(--c-primary-soft);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;border-radius:var(--r-md);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-weight:600;font-size:15px;transition:color .18s;}
.btn-text svg{transition:transform .18s ease;}
.btn-text:hover{color:var(--c-primary-dark);text-decoration:underline;text-underline-offset:4px;}
.btn-text:hover svg{transform:translateX(3px);}

/* ---------- badges / meta ---------- */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;
  background:var(--c-primary-soft);color:var(--c-primary);
}
.badge-gold{background:rgba(217,164,65,.15);color:#96691A;}

/* ---------- masthead ---------- */
.masthead{
  position:relative;overflow:hidden;color:#fff;
  background-color:var(--c-ink);
  background-image:linear-gradient(180deg,rgba(14,27,46,.9),rgba(14,27,46,.96)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  padding:52px 0 60px;
}
.masthead::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:radial-gradient(circle,rgba(30,75,143,.9) 1px,transparent 1.4px);
  background-size:26px 26px;
}
.masthead .container{position:relative;z-index:1;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.7);margin-bottom:22px;}
.crumb a{transition:color .18s;}
.crumb a:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px;}
.crumb .sep{opacity:.45;}
.crumb .current{color:rgba(255,255,255,.92);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.masthead h1{
  color:#fff;font-size:clamp(30px,4.2vw,48px);line-height:1.18;font-weight:700;
  letter-spacing:-.02em;max-width:20ch;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:24px;font-size:13.5px;color:rgba(255,255,255,.75);}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.35);}

/* ---------- article layout ---------- */
.article-section{padding:56px 0 72px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:36px;align-items:start;}
.article-main{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:32px 28px;
}
.article-body{font-size:17px;line-height:1.9;color:var(--c-body);}
.article-body h2{
  position:relative;padding-left:22px;margin:1.9em 0 .8em;
  font-size:clamp(22px,2.4vw,28px);line-height:1.35;font-weight:700;color:var(--c-ink);
}
.article-body h2:first-child{margin-top:.2em;}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.52em;width:18px;height:3px;border-radius:2px;
  background:var(--c-accent);
}
.article-body h3{font-size:21px;line-height:1.4;font-weight:600;color:var(--c-ink);margin:1.6em 0 .6em;}
.article-body h4{font-size:18px;font-weight:600;margin:1.4em 0 .5em;}
.article-body a{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--c-primary-dark);}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.2em;line-height:1.85;}
.article-body li{margin-bottom:.4em;}
.article-body blockquote{
  margin:1.6em 0;padding:16px 20px;background:#F4F7FB;color:var(--c-body);
  border-left:3px solid var(--c-primary);border-radius:0 var(--r-md) var(--r-md) 0;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-md);margin:1.6em auto;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13px;color:var(--c-muted);text-align:center;margin-top:10px;}
.article-body table{
  width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px;
  border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
}
.article-body th{background:var(--c-primary-soft);color:var(--c-ink);font-weight:600;text-align:left;padding:12px 14px;}
.article-body td{padding:12px 14px;border-top:1px solid var(--c-line);}
.article-body pre{
  background:#F4F7FB;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:16px;overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body code{background:#F4F7FB;border-radius:6px;padding:2px 6px;font-size:.92em;color:var(--c-primary-dark);}
.article-body pre code{background:none;padding:0;}

.article-foot{margin-top:40px;padding-top:24px;border-top:1px solid var(--c-line);}
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.copyright-note{font-size:13.5px;color:var(--c-muted);margin:0;line-height:1.8;}

.article-side{display:grid;gap:20px;}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:22px;
}
.side-card h2,.side-card h3{font-size:16px;font-weight:600;color:var(--c-ink);margin-bottom:14px;}
.side-list{display:grid;gap:12px;list-style:none;}
.side-list li{display:flex;justify-content:space-between;gap:12px;font-size:14px;color:var(--c-body);}
.side-list li span:first-child{color:var(--c-muted);}
.side-links{display:grid;gap:10px;list-style:none;}
.side-links a{font-size:14.5px;color:var(--c-body);transition:color .16s;}
.side-links a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}

.empty-state{
  text-align:center;padding:56px 20px;border:1px dashed var(--c-line);border-radius:var(--r-lg);
  background:#FBFCFE;
}
.empty-state h2{font-size:22px;margin-bottom:12px;}
.empty-state p{color:var(--c-muted);margin-bottom:22px;}

/* ---------- related ---------- */
.related{padding:0 0 72px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;}
.section-head p{font-size:14px;color:var(--c-muted);margin:8px 0 0;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;}
.card{
  display:flex;flex-direction:column;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-lg);box-shadow:var(--sh-1);
  overflow:hidden;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:rgba(30,75,143,.2);}
.card-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:#EDF1F8;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:18px;line-height:1.5;font-weight:600;margin:0;}
.card:hover .card-body h3{color:var(--c-primary);}
.card-body p{font-size:14px;line-height:1.7;color:var(--c-body);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--c-muted);margin-top:auto;}
.card-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--c-muted);}
.card-link{margin-top:14px;}

.back-row{display:flex;justify-content:center;margin-top:40px;}

/* ---------- CTA band ---------- */
.cta-band{padding:0 0 80px;}
.cta-inner{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--c-primary-soft);border:1px solid #DCE7F8;
  padding:44px 40px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
}
.cta-inner::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.06;
  background-image:radial-gradient(circle,rgba(30,75,143,.9) 1px,transparent 1.4px);
  background-size:24px 24px;
}
.cta-text{position:relative;z-index:1;max-width:620px;}
.cta-text h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;margin-bottom:10px;}
.cta-text p{margin:0;font-size:15px;color:var(--c-body);}
.cta-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- footer ---------- */
.site-footer{
  position:relative;overflow:hidden;background:#12233D;color:#C9D5E8;
  padding:64px 0 0;margin-top:0;
}
.site-footer::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:radial-gradient(circle,rgba(47,164,184,.9) 1px,transparent 1.4px);
  background-size:30px 30px;
}
.site-footer .container{position:relative;z-index:1;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr 1.5fr;gap:36px;}
.footer-brand p{font-size:14px;line-height:1.75;color:#A9B8CE;margin:16px 0 0;max-width:340px;}
.footer-col h3,.footer-sub h3{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col ul{list-style:none;display:grid;gap:11px;}
.footer-col a{font-size:14px;color:#C9D5E8;border-bottom:1px solid transparent;transition:.16s;}
.footer-col a:hover{color:var(--c-accent);border-bottom-color:var(--c-accent);}
.sub-form{display:flex;gap:8px;}
.sub-form input{
  flex:1;min-width:0;height:44px;border-radius:var(--r-md);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);
  padding:0 14px;font-size:14px;color:#fff;
}
.sub-form input::placeholder{color:#8FA0B8;}
.sub-form input:focus{outline:none;border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(47,164,184,.2);}
.footer-note{font-size:13px;color:#8FA0B8;margin:12px 0 0;line-height:1.7;}
.footer-bottom{margin-top:56px;border-top:1px solid rgba(255,255,255,.1);padding:20px 0;position:relative;z-index:1;}
.footer-bottom-inner{display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:#8FA0B8;}

/* ---------- responsive ---------- */
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:40px;}
  .article-main{padding:40px 44px;}
  .article-side{position:sticky;top:96px;}
}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .cmd-search{display:none;}
  .ghost-link{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{gap:12px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .header-inner{height:60px;}
  .masthead{padding:36px 0 42px;}
  .masthead h1{max-width:none;}
  .crumb .current{white-space:normal;max-width:100%;}
  .article-section{padding:40px 0 56px;}
  .article-main{padding:24px 20px;border-radius:var(--r-md);}
  .article-body{font-size:16px;line-height:1.85;}
  .card-grid{grid-template-columns:1fr;gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand,.footer-sub{grid-column:1 / -1;}
  .cta-inner{padding:30px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
  .article-body h2::before{top:.46em;}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr;}
  .btn{width:100%;}
  .btn-sm{width:auto;}
  .sub-form{flex-wrap:wrap;}
  .sub-form .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --c-ink:#0E1B2E;
  --c-body:#46536B;
  --c-muted:#8492A6;
  --c-primary:#1E4B8F;
  --c-primary-dark:#143567;
  --c-primary-soft:#E9F0FB;
  --c-accent:#2FA4B8;
  --c-gold:#D9A441;
  --c-bg:#F7F9FC;
  --c-surface:#FFFFFF;
  --c-line:#E4EAF3;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,46,.05);
  --sh-2:0 4px 16px rgba(30,75,143,.08);
  --sh-3:0 12px 32px rgba(30,75,143,.12);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-body);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,ui-sans-serif,Inter,sans-serif;
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,p{margin:0;}
h1{font-size:clamp(30px,4.2vw,48px);line-height:1.18;font-weight:700;letter-spacing:-.02em;color:var(--c-ink);}
h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em;color:var(--c-ink);}
h3{font-size:20px;line-height:1.4;font-weight:600;color:var(--c-ink);}
p{font-size:16px;line-height:1.75;}
::selection{background:rgba(30,75,143,.14);}

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

.skip-link{
  position:absolute;left:-9999px;top:0;
  background:var(--c-primary);color:#fff;
  padding:10px 16px;border-radius:0 0 var(--r-md) 0;z-index:200;
}
.skip-link:focus{left:0;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow 180ms ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:68px;
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
.brand-mark{display:inline-flex;color:var(--c-primary);}
.brand-name{font-size:18px;font-weight:700;color:var(--c-ink);letter-spacing:-.01em;}
.brand--light .brand-name{color:#fff;}
.brand--light .brand-mark{color:#7FA6E0;}

.nav-menu{display:flex;align-items:center;gap:2px;}
a.nav-link,button.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 14px;border-radius:var(--r-sm);
  font-size:16px;font-weight:500;color:var(--c-body);
  background:none;border:none;font-family:inherit;
  position:relative;cursor:pointer;
  transition:color 160ms ease;
}
a.nav-link::after,button.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  background:var(--c-primary);border-radius:2px;
  transform:scaleX(0);transform-origin:left center;
  transition:transform 180ms ease;
}
a.nav-link:hover,button.nav-link:hover{color:var(--c-primary);}
a.nav-link:hover::after,button.nav-link:hover::after{transform:scaleX(1);}
a.nav-link.is-active,button.nav-link.is-active{color:var(--c-primary);font-weight:600;}
a.nav-link.is-active::after{transform:scaleX(1);}

.nav-drop{position:relative;}
.nav-drop-panel{
  position:absolute;top:calc(100% + 10px);left:0;min-width:206px;
  background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-lg);box-shadow:var(--sh-3);
  padding:8px;display:flex;flex-direction:column;gap:2px;
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity 180ms ease,transform 180ms ease,visibility 180ms;
}
.nav-drop.is-open .nav-drop-panel{opacity:1;visibility:visible;transform:translateY(0);}
.nav-drop-panel a{
  display:block;padding:10px 14px;border-radius:var(--r-md);
  font-size:15px;color:var(--c-body);transition:background 160ms ease,color 160ms ease;
}
.nav-drop-panel a:hover{background:var(--c-primary-soft);color:var(--c-primary);}

.header-right{display:flex;align-items:center;gap:14px;margin-left:auto;}
.cmd-search{
  display:flex;align-items:center;gap:8px;
  width:288px;height:40px;padding:0 10px 0 12px;
  background:#F2F5FA;border:1px solid transparent;border-radius:var(--r-md);
  transition:border-color 160ms ease,background 160ms ease,box-shadow 160ms ease;
}
.cmd-search:focus-within{
  background:var(--c-surface);border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(30,75,143,.12);
}
.cmd-search svg{flex:none;color:var(--c-muted);}
.cmd-search input{
  flex:1;min-width:0;border:none;background:transparent;outline:none;
  font-family:inherit;font-size:14px;color:var(--c-ink);
}
.cmd-search input::placeholder{color:var(--c-muted);}
.kbd{
  flex:none;font-size:12px;line-height:1.4;color:var(--c-muted);
  border:1px solid var(--c-line);background:var(--c-surface);
  border-radius:var(--r-sm);padding:2px 6px;
}
.text-link{
  font-size:15px;font-weight:500;color:var(--c-body);
  padding:8px 4px;transition:color 160ms ease;
}
.text-link:hover{color:var(--c-primary);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:inherit;font-weight:600;line-height:1;
  border-radius:var(--r-md);border:1px solid transparent;
  cursor:pointer;text-align:center;
  transition:background-color 180ms ease,color 180ms ease,border-color 180ms ease,box-shadow 180ms ease,transform 180ms ease;
}
.btn.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn.btn-md{height:44px;padding:0 22px;font-size:15px;}
.btn.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn.btn-block{width:100%;}

.btn.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-2);}
.btn.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn.btn-primary:active{transform:translateY(0);box-shadow:var(--sh-2);}
.btn.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(30,75,143,.25);}
.btn.btn-primary:disabled{background:#C7D1E0;color:#fff;box-shadow:none;transform:none;cursor:not-allowed;}

.btn.btn-ghost{background:var(--c-surface);border-color:var(--c-line);color:var(--c-primary);}
.btn.btn-ghost:hover{border-color:var(--c-primary);background:var(--c-primary-soft);}
.btn.btn-ghost:focus-visible{outline:none;box-shadow:0 0 0 3px rgba(30,75,143,.2);}
.btn.btn-ghost:active{transform:translateY(0);}

.btn.btn-link{background:none;border:none;padding:0;height:auto;color:var(--c-primary);font-size:15px;font-weight:600;}
.btn.btn-link .arrow{transition:transform 160ms ease;}
.btn.btn-link:hover .arrow{transform:translateX(3px);}
.btn.btn-link:hover{text-decoration:underline;text-underline-offset:4px;}

.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:var(--r-md);
  border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-ink);
  cursor:pointer;transition:border-color 160ms ease,background 160ms ease;
}
button.nav-toggle:hover{border-color:var(--c-primary);background:var(--c-primary-soft);}

/* ---------- Drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,27,46,.4);
  opacity:0;visibility:hidden;transition:opacity 180ms ease,visibility 180ms;z-index:120;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(340px,88vw);
  background:var(--c-surface);z-index:130;
  transform:translateX(102%);transition:transform 200ms ease;
  box-shadow:-8px 0 32px rgba(14,27,46,.12);
  padding:20px;overflow-y:auto;
  display:flex;flex-direction:column;gap:18px;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:40px;height:40px;border-radius:var(--r-md);border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-body);font-size:20px;line-height:1;
  cursor:pointer;transition:border-color 160ms ease,color 160ms ease;
}
button.drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary);}
.cmd-search--drawer{width:100%;background:#F2F5FA;}
.drawer-nav{display:flex;flex-direction:column;gap:2px;}
.drawer-nav a{
  display:block;padding:12px 14px;border-radius:var(--r-md);
  font-size:16px;font-weight:500;color:var(--c-body);
  transition:background 160ms ease,color 160ms ease;
}
.drawer-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.drawer-nav a.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;}

/* ---------- Breadcrumb ---------- */
.crumb-bar{padding:18px 0 0;}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--c-muted);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li+li::before{content:"/";color:#B9C4D4;}
.breadcrumb a{color:var(--c-muted);transition:color 160ms ease;}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb [aria-current="page"]{color:var(--c-body);}

/* ---------- Hero ---------- */
.hero{position:relative;padding:34px 0 72px;overflow:hidden;}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle,rgba(30,75,143,.9) 1px,transparent 1px);
  background-size:26px 26px;opacity:.055;
}
.hero-inner{position:relative;z-index:1;}
.hero h1{max-width:14em;}
.hero-lead{
  margin-top:20px;max-width:660px;
  font-size:17px;line-height:1.8;color:var(--c-body);
}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;align-items:center;gap:16px;}
.hero-tags{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12.5px;font-weight:600;letter-spacing:.02em;line-height:1.4;
}
.tag--line{background:var(--c-surface);border:1px solid var(--c-line);color:var(--c-body);}

.hero-band{
  position:relative;margin-top:40px;
  border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:21/9;background:#0E1B2E;
  box-shadow:var(--sh-2);
}
.hero-band img{width:100%;height:100%;object-fit:cover;}
.hero-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,27,46,.06) 0%,rgba(14,27,46,.42) 100%);
  pointer-events:none;
}
.hero-band-meta{
  position:absolute;left:24px;right:24px;bottom:22px;z-index:2;
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
}
.chip-dark{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.92);color:var(--c-ink);
  font-size:13px;font-weight:600;letter-spacing:.01em;
}
.chip-dark i{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--c-gold);}

/* ---------- Sections ---------- */
.section{padding:0 0 88px;}
.section-head{max-width:660px;margin-bottom:44px;}
.section-head p{margin-top:14px;color:var(--c-body);}
.eyebrow{
  display:inline-block;margin-bottom:14px;
  font-size:12.5px;font-weight:600;letter-spacing:.08em;color:var(--c-accent);
}

/* ---------- Feature rows ---------- */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;
  gap:56px;align-items:center;
  padding:32px 0;
}
.feature-row + .feature-row{border-top:1px solid var(--c-line);}
.feature-row.is-reversed .feature-media{order:2;}
.feature-media{
  border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--c-line);box-shadow:var(--sh-1);
  aspect-ratio:16/10;background:#E9F0FB;
}
.feature-media img{width:100%;height:100%;object-fit:cover;}
.feature-body h3{margin-bottom:14px;font-size:22px;}
.feature-body > p{color:var(--c-body);}
.point-list{margin-top:22px;display:flex;flex-direction:column;gap:12px;}
.point-list li{display:flex;gap:10px;font-size:15px;color:var(--c-body);line-height:1.7;}
.point-list li svg{flex:none;margin-top:5px;color:var(--c-primary);}
.feature-body .btn-link{margin-top:22px;}

/* ---------- Steps ---------- */
.steps{
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
  border-top:1px solid var(--c-line);padding-top:40px;
}
.step-num{
  font-size:44px;line-height:1;font-weight:700;font-variant-numeric:tabular-nums;
  color:transparent;-webkit-text-stroke:1.5px var(--c-accent);
  letter-spacing:-.02em;
}
.step h3{margin-top:16px;font-size:18px;}
.step p{margin-top:10px;font-size:15px;color:var(--c-body);line-height:1.75;}
.step-line{width:28px;height:2px;background:var(--c-accent);border-radius:2px;margin-top:18px;opacity:.5;}

/* ---------- Capability list ---------- */
.cap-list{
  display:grid;grid-template-columns:1fr 1fr;gap:0 48px;
  border-top:1px solid var(--c-line);
}
.cap-item{padding:22px 0;border-bottom:1px solid var(--c-line);}
.cap-item dt{font-size:17px;font-weight:600;color:var(--c-ink);display:flex;align-items:center;gap:10px;}
.cap-item dt span{
  font-size:12px;font-weight:600;color:var(--c-gold);
  border:1px solid rgba(217,164,65,.5);border-radius:var(--r-sm);
  padding:1px 6px;letter-spacing:.02em;
}
.cap-item dd{margin:8px 0 0;font-size:15px;color:var(--c-body);line-height:1.75;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:820px;margin:0 auto;}
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
button.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 0;background:none;border:none;
  font-family:inherit;font-size:16px;font-weight:600;color:var(--c-ink);
  text-align:left;cursor:pointer;line-height:1.6;
  transition:color 160ms ease;
}
button.faq-q:hover{color:var(--c-primary);}
button.faq-q:focus-visible{outline:2px solid rgba(30,75,143,.35);outline-offset:3px;border-radius:var(--r-sm);}
.faq-q svg{flex:none;color:var(--c-muted);transition:transform 180ms ease;}
.faq-item.is-open .faq-q svg{transform:rotate(180deg);color:var(--c-primary);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 180ms ease;}
.faq-a p{padding:0 0 22px;font-size:15px;line-height:1.8;color:var(--c-body);}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--c-primary-soft);
  border:1px solid #D7E3F7;border-radius:var(--r-lg);
  padding:48px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle,rgba(30,75,143,.9) 1px,transparent 1px);
  background-size:22px 22px;opacity:.05;
}
.cta-band-text{position:relative;z-index:1;max-width:600px;}
.cta-band-text h2{font-size:clamp(22px,2.6vw,30px);}
.cta-band-text p{margin-top:12px;color:var(--c-body);font-size:15.5px;}
.cta-band-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- Footer ---------- */
.site-footer{
  position:relative;overflow:hidden;
  margin-top:96px;background:#12233D;color:#fff;
  border-top:1px solid rgba(255,255,255,.1);
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle,rgba(255,255,255,.9) 1px,transparent 1px);
  background-size:34px 34px;opacity:.05;
}
.footer-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr 1.5fr;
  gap:40px;padding:72px 24px 52px;
}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.75;color:rgba(255,255,255,.68);max-width:320px;}
.footer-col h3,.footer-sub h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.01em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);transition:color 160ms ease;}
.footer-col a:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px;}
.sub-form{display:flex;gap:8px;margin-bottom:14px;}
.sub-form input{
  flex:1;min-width:0;height:38px;padding:0 12px;
  border-radius:var(--r-md);border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.08);color:#fff;font-family:inherit;font-size:14px;outline:none;
  transition:border-color 160ms ease,background 160ms ease;
}
.sub-form input::placeholder{color:rgba(255,255,255,.5);}
.sub-form input:focus{border-color:var(--c-accent);background:rgba(255,255,255,.14);}
.footer-note{font-size:13px;color:rgba(255,255,255,.55);line-height:1.7;}
.footer-note + .footer-note{margin-top:6px;}
.footer-bottom{
  position:relative;z-index:1;
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0;
}
.footer-bottom-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
}
.footer-bottom-inner p{font-size:13px;color:rgba(255,255,255,.58);}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .cmd-search{width:220px;}
}
@media (max-width:1024px){
  .nav-menu{display:none;}
  .cmd-search{display:none;}
  .text-link{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-inner{gap:16px;}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px 24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-sub{grid-column:1 / -1;}
}
@media (max-width:768px){
  .container{padding-left:20px;padding-right:20px;}
  .section{padding-bottom:56px;}
  .hero{padding:26px 0 56px;}
  .hero-band{aspect-ratio:16/10;margin-top:28px;}
  .hero-lead{font-size:16px;}
  .feature-row{grid-template-columns:1fr;gap:24px;padding:26px 0;}
  .feature-row.is-reversed .feature-media{order:0;}
  .steps{grid-template-columns:1fr;}
  .cap-list{grid-template-columns:1fr;}
  .cta-band{padding:32px 24px;}
  .cta-band-actions{width:100%;}
  .cta-band-actions .btn{flex:1;min-width:150px;}
  .surface-section{padding:0;}
  .section-head{margin-bottom:32px;}
  .footer-grid{padding:52px 20px 40px;}
  .footer-bottom-inner{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  h1{font-size:28px;}
  .hero-band-meta{left:16px;right:16px;bottom:16px;}
  .chip-dark{font-size:12px;padding:6px 11px;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --c-ink:#0E1B2E;
  --c-body:#46536B;
  --c-muted:#8492A6;
  --c-primary:#1E4B8F;
  --c-primary-dark:#143567;
  --c-primary-soft:#E9F0FB;
  --c-accent:#2FA4B8;
  --c-gold:#D9A441;
  --c-bg:#F7F9FC;
  --c-surface:#FFFFFF;
  --c-line:#E4EAF3;
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,27,46,.05);
  --sh-2:0 4px 16px rgba(30,75,143,.08);
  --sh-3:0 12px 32px rgba(30,75,143,.12);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-body);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3{margin:0;color:var(--c-ink);font-family:var(--font-cn);}
h1{font-size:clamp(30px,4.2vw,48px);line-height:1.18;font-weight:700;letter-spacing:-0.02em;}
h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;letter-spacing:-0.01em;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
table{border-collapse:collapse;}
:focus-visible{outline:3px solid rgba(30,75,143,.35);outline-offset:2px;}

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

/* 跳过链接 */
.skip-link{
  position:absolute;left:-9999px;top:0;z-index:99;
  background:var(--c-primary);color:#fff;padding:10px 18px;border-radius:0 0 var(--r-md) 0;font-size:14px;
}
.skip-link:focus{left:0;}

/* ===== 导航 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .18s ease;
}
.site-header.is-scrolled{box-shadow:var(--sh-1);}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);font-weight:700;font-size:18px;letter-spacing:-0.01em;}
.brand-mark{display:inline-flex;color:var(--c-primary);}
.brand--light{color:#fff;}
.brand--light .brand-mark{color:#7FA8DE;}

.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  min-height:44px;padding:0 12px;border:0;
  color:var(--c-body);font-size:16px;font-weight:500;
  transition:color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:6px;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .18s ease;
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.is-active{color:var(--c-primary);font-weight:600;}
.nav-link.is-active::after{transform:scaleX(1);}

.nav-drop{position:relative;}
.nav-drop-panel{
  position:absolute;top:calc(100% + 12px);left:0;min-width:236px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-3);padding:10px;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
}
.nav-drop.is-open .nav-drop-panel{opacity:1;visibility:visible;transform:translateY(0);}
.nav-drop-panel a{display:block;padding:10px 12px;border-radius:10px;color:var(--c-body);font-size:15px;transition:background-color .16s ease,color .16s ease;}
.nav-drop-panel a:hover{background:var(--c-primary-soft);color:var(--c-primary);}

.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.search-box{
  display:flex;align-items:center;gap:8px;width:280px;height:44px;padding:0 10px 0 12px;
  background:#F2F5FA;border:1px solid transparent;border-radius:var(--r-md);
  transition:background-color .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.search-box svg{flex:none;color:var(--c-muted);}
.search-box:focus-within{background:#fff;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(30,75,143,.15);}
.search-box input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--c-ink);}
.search-box input::placeholder{color:var(--c-muted);}
.kbd{
  flex:none;border:1px solid var(--c-line);border-radius:var(--r-sm);
  padding:1px 6px;font-size:12px;color:var(--c-muted);background:#fff;line-height:1.5;
}
.text-entry{font-size:15px;font-weight:500;color:var(--c-body);padding:8px 6px;border-radius:var(--r-sm);transition:color .18s ease;}
.text-entry:hover{color:var(--c-primary);}
.menu-toggle{
  display:none;width:44px;height:44px;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:var(--r-md);background:#fff;color:var(--c-ink);
  transition:border-color .18s ease,color .18s ease;
}
.menu-toggle:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,27,46,.4);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .18s ease,visibility .18s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:71;
  background:var(--c-surface);padding:18px 20px 28px;overflow-y:auto;
  transform:translateX(100%);transition:transform .2s ease;
  box-shadow:-12px 0 32px rgba(30,75,143,.12);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--c-line);}
.drawer-close{width:40px;height:40px;border:1px solid var(--c-line);border-radius:var(--r-md);color:var(--c-body);font-size:18px;line-height:1;}
.drawer-close:hover{border-color:var(--c-primary);color:var(--c-primary);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin:16px 0 20px;}
.drawer-nav a{padding:12px 10px;border-radius:var(--r-md);font-size:16px;font-weight:500;color:var(--c-body);transition:background-color .16s ease,color .16s ease;}
.drawer-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary);}
.drawer-nav a.is-active{background:var(--c-primary-soft);color:var(--c-primary);font-weight:600;}
.drawer-nav a.drawer-sub{padding-left:26px;font-size:15px;color:var(--c-muted);font-weight:400;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border:1px solid transparent;border-radius:var(--r-md);
  font-size:15px;font-weight:600;text-align:center;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:var(--sh-2);}
.btn-primary:hover{background:var(--c-primary-dark);transform:translateY(-1px);box-shadow:var(--sh-3);}
.btn-primary:active{transform:translateY(0);}
.btn-primary:disabled{background:#C7D1E0;color:#fff;box-shadow:none;cursor:not-allowed;transform:none;}
.btn-ghost{background:#fff;border-color:var(--c-line);color:var(--c-primary);}
.btn-ghost:hover{border-color:var(--c-primary);background:var(--c-primary-soft);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--c-primary);font-size:15px;font-weight:600;padding:8px 0;}
.btn-text svg{transition:transform .18s ease;}
.btn-text:hover svg{transform:translateX(3px);}
.btn-text:hover{text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(30,75,143,.4);}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}

/* ===== 板块 ===== */
.section{padding:88px 0;}
.section--alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.sec-head{max-width:720px;margin-bottom:44px;}
.sec-head h2{margin-bottom:14px;}
.sec-desc{font-size:16px;line-height:1.8;color:var(--c-body);margin:0;}
.eyebrow{
  display:inline-block;margin-bottom:12px;padding:4px 12px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1.4;
}
.tag{
  display:inline-block;padding:3px 10px;border-radius:var(--r-pill);
  background:var(--c-primary-soft);color:var(--c-primary);
  font-size:12px;font-weight:600;letter-spacing:.02em;line-height:1.5;
}
.tag--gold{background:#FBF2DF;color:#8A6414;}

/* ===== 面包屑 ===== */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--c-muted);margin-bottom:26px;}
.breadcrumb a{color:var(--c-muted);transition:color .16s ease;}
.breadcrumb a:hover{color:var(--c-primary);}
.breadcrumb .sep{color:#C3CDDC;}
.breadcrumb .current{color:var(--c-body);}

/* ===== 分类页 Hero ===== */
.hero-cat{
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  padding:26px 0 56px;
}
.hero-cat-inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;}
.hero-cat-copy h1{margin-bottom:18px;}
.hero-sub{font-size:17px;line-height:1.8;color:var(--c-body);max-width:520px;margin-bottom:26px;}
.hero-cat-media{position:relative;}
.hero-cat-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--sh-2);
}
.hero-cat-media::before{
  content:"";position:absolute;top:-26px;right:-18px;width:196px;height:196px;border-radius:26px;
  background-image:radial-gradient(var(--c-primary) 1.2px,transparent 1.2px);
  background-size:14px 14px;opacity:.06;pointer-events:none;
}

/* ===== Bento 网格 ===== */
.bento{display:grid;grid-template-columns:1.45fr 1fr;gap:24px;}
.bento-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh-1);
  transition:box-shadow .18s ease,transform .18s ease,border-color .18s ease;
  display:flex;flex-direction:column;gap:14px;
}
.bento-card:hover{box-shadow:var(--sh-3);transform:translateY(-2px);border-color:rgba(30,75,143,.2);}
.bento-main{grid-row:span 2;padding:0;overflow:hidden;border-top:3px solid var(--c-gold);}
.bento-main-media{position:relative;}
.bento-main-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;}
.bento-main-media .tag--gold{position:absolute;top:16px;left:16px;background:#fff;color:#8A6414;}
.bento-main-body{padding:24px 26px 28px;display:flex;flex-direction:column;gap:14px;flex:1;}
.bento-card h3{font-size:21px;}
.bento-text{font-size:15px;line-height:1.75;color:var(--c-body);margin:0;}
.check-list{display:flex;flex-direction:column;gap:9px;}
.check-list li{display:flex;gap:10px;font-size:14.5px;color:var(--c-body);line-height:1.65;}
.check-list svg{flex:none;margin-top:5px;color:var(--c-primary);}
.price-row{display:flex;align-items:baseline;gap:6px;margin-top:auto;padding-top:8px;}
.price{font-size:26px;font-weight:700;color:var(--c-ink);letter-spacing:-0.01em;}
.price-unit{font-size:14px;color:var(--c-muted);}
.price-free{font-size:22px;font-weight:700;color:var(--c-ink);}

/* ===== 权益对照表 ===== */
.compare-wrap{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);overflow:hidden;
}
.compare-scroll{overflow-x:auto;}
table.compare-table{width:100%;min-width:860px;font-size:15px;}
.compare-table th,.compare-table td{
  padding:0 18px;height:56px;text-align:center;vertical-align:middle;
  border-bottom:1px solid var(--c-line);
}
.compare-table thead th{
  height:76px;background:#F4F7FB;color:var(--c-ink);font-weight:600;font-size:15px;
  position:sticky;top:0;z-index:2;
}
.compare-table thead th:first-child{text-align:left;left:0;z-index:4;}
.compare-table tbody th{
  text-align:left;font-weight:500;color:var(--c-ink);
  background:var(--c-surface);position:sticky;left:0;z-index:1;min-width:190px;
}
.compare-table thead th.is-rec{background:var(--c-primary-soft);border-top:3px solid var(--c-gold);}
.compare-table tbody td.is-rec{background:var(--c-primary-soft);}
.compare-table tbody tr:hover th{background:#F7FAFF;}
.compare-table tbody tr:hover td:not(.is-rec){background:#F7FAFF;}
.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:0;}
.plan-name{display:block;font-size:16px;font-weight:600;color:var(--c-ink);}
.plan-price-small{display:block;font-size:13px;color:var(--c-muted);font-weight:400;margin-top:2px;}
.cell-yes{color:var(--c-primary);display:inline-flex;}
.cell-no{color:var(--c-muted);font-size:14px;}
.cell-num{color:var(--c-ink);font-weight:600;font-size:15px;}
.table-note{font-size:13px;color:var(--c-muted);margin-top:14px;}

/* 移动折叠卡 */
.plan-cards{display:none;grid-gap:16px;gap:16px;}
.plan-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--sh-1);
}
.plan-card.is-rec{border-top:3px solid var(--c-gold);}
.plan-card h3{font-size:19px;margin-bottom:6px;}
.plan-card .plan-price{font-size:22px;font-weight:700;color:var(--c-ink);margin-bottom:14px;}
.plan-list{display:flex;flex-direction:column;gap:9px;}
.plan-list li{display:flex;gap:10px;font-size:14.5px;line-height:1.65;}
.plan-list li.is-on{color:var(--c-body);}
.plan-list li.is-off{color:var(--c-muted);}
.plan-list li.is-on::before{content:"✓";color:var(--c-primary);font-weight:700;flex:none;}
.plan-list li.is-off::before{content:"—";color:var(--c-muted);flex:none;}

/* ===== 步骤条 ===== */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.step{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh-1);
}
.step-num{
  display:block;font-size:34px;font-weight:700;line-height:1;color:transparent;
  -webkit-text-stroke:1.4px var(--c-accent);margin-bottom:16px;letter-spacing:-0.02em;
}
.step h3{font-size:19px;margin-bottom:10px;}
.step p{font-size:14.5px;line-height:1.75;color:var(--c-body);margin:0;}

/* ===== 场景图文 ===== */
.scene{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;}
.scene + .scene{margin-top:72px;}
.scene-media img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-2);}
.scene-copy h3{font-size:24px;line-height:1.35;margin-bottom:16px;}
.scene-copy p{font-size:16px;line-height:1.85;color:var(--c-body);}
.scene-list{margin-top:20px;display:flex;flex-direction:column;gap:12px;}
.scene-list li{display:flex;gap:12px;font-size:15px;line-height:1.7;color:var(--c-body);}
.scene-list .dot{flex:none;width:6px;height:6px;border-radius:50%;background:var(--c-accent);margin-top:10px;}
.scene--reverse .scene-media{order:2;}
.scene--reverse .scene-copy{order:1;}

/* ===== FAQ ===== */
.faq{max-width:820px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-item:first-child{border-top:1px solid var(--c-line);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:18px;width:100%;
  padding:20px 0;text-align:left;font-size:16px;font-weight:600;color:var(--c-ink);
  min-height:44px;transition:color .16s ease;
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{flex:none;color:var(--c-muted);transition:transform .18s ease;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .18s ease;}
.faq-a p{padding:0 0 20px;font-size:15px;line-height:1.85;color:var(--c-body);margin:0;}

/* ===== 开通表单 ===== */
.section--join{background:var(--c-bg);}
.join-card{
  max-width:720px;margin:0 auto;background:var(--c-primary-soft);
  border:1px solid #D8E3F6;border-radius:var(--r-lg);padding:32px;box-shadow:var(--sh-1);
}
.join-card h2{font-size:26px;margin-bottom:10px;}
.join-intro{font-size:15px;line-height:1.75;color:var(--c-body);margin-bottom:24px;}
.join-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:22px;}
.field{display:flex;flex-direction:column;}
.field label{font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:8px;}
.form-input{
  width:100%;height:48px;padding:0 14px;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r-md);
  outline:none;color:var(--c-ink);font-size:15px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.form-input::placeholder{color:var(--c-muted);}
.form-input:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(30,75,143,.15);}
.segmented{display:flex;gap:10px;}
.seg-item{position:relative;flex:1;}
.seg-item input{position:absolute;opacity:0;width:1px;height:1px;}
.seg-item span{
  display:flex;align-items:center;justify-content:center;height:48px;
  border:1px solid var(--c-line);border-radius:var(--r-md);background:#fff;
  font-size:15px;font-weight:600;color:var(--c-body);cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.seg-item span:hover{border-color:var(--c-primary);color:var(--c-primary);}
.seg-item input:checked + span{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.seg-item input:focus-visible + span{box-shadow:0 0 0 3px rgba(30,75,143,.25);}
.agree-row{display:flex;align-items:flex-start;gap:10px;margin-bottom:20px;}
.agree-row input{width:18px;height:18px;margin-top:3px;accent-color:var(--c-primary);flex:none;}
.agree-row label{font-size:12.5px;line-height:1.6;color:var(--c-muted);font-weight:400;}
.agree-row a{color:var(--c-primary);}
.form-status{font-size:13px;color:var(--c-muted);margin-top:14px;min-height:20px;}

/* ===== 页脚 ===== */
.site-footer{position:relative;background:var(--c-ink);color:#C9D5E6;padding:0;overflow:hidden;}
.site-footer::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(#FFFFFF 1px,transparent 1px);
  background-size:22px 22px;opacity:.06;pointer-events:none;
}
.footer-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1.5fr;gap:40px 32px;
  padding-top:64px;padding-bottom:48px;
}
.footer-brand p{font-size:14px;line-height:1.8;color:#9FB0C9;margin:16px 0 0;}
.footer-col h3,.footer-sub h3{
  color:#fff;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.01em;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:#A9B9D0;transition:color .16s ease;}
.footer-col a:hover{color:var(--c-accent);text-decoration:underline;text-underline-offset:3px;}
.sub-form{display:flex;gap:10px;margin-bottom:12px;}
.sub-form input{
  flex:1;min-width:0;height:40px;padding:0 12px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.18);border-radius:10px;color:#fff;font-size:14px;outline:none;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.sub-form input::placeholder{color:#8B9CB6;}
.sub-form input:focus{border-color:var(--c-accent);box-shadow:0 0 0 3px rgba(47,164,184,.22);}
.footer-note{font-size:13px;line-height:1.7;color:#8B9CB6;margin:0 0 6px;}
.footer-bottom{
  position:relative;z-index:1;border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0;background:rgba(255,255,255,.02);
}
.footer-bottom-inner{display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;}
.footer-bottom p{font-size:13px;color:#8B9CB6;margin:0;}

/* ===== 响应式 ===== */
@media (max-width:1279px){
  .search-box{width:240px;}
}
@media (max-width:1023px){
  .nav-menu{display:none;}
  .search-box{display:none;}
  .text-entry{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-inner{height:60px;gap:12px;}
  .section{padding:64px 0;}
  .hero-cat-inner{grid-template-columns:1fr;gap:28px;}
  .hero-cat{padding:20px 0 44px;}
  .hero-sub{max-width:none;}
  .bento{grid-template-columns:1fr;}
  .bento-main{grid-row:auto;}
  .scene{grid-template-columns:1fr;gap:26px;}
  .scene--reverse .scene-media{order:0;}
  .scene--reverse .scene-copy{order:0;}
  .scene + .scene{margin-top:56px;}
  .steps{grid-template-columns:1fr;gap:16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px 28px;padding-top:52px;}
}
@media (max-width:767px){
  .section{padding:56px 0;}
  .sec-head{margin-bottom:32px;}
  .compare-scroll{display:none;}
  .plan-cards{display:grid;}
  .plan-cards{grid-gap:16px;}
  .table-note{margin-top:16px;}
  .join-grid{grid-template-columns:1fr;}
  .join-card{padding:24px;}
  .footer-grid{grid-template-columns:1fr;padding-top:48px;padding-bottom:36px;}
  .footer-bottom-inner{flex-direction:column;gap:6px;}
}
@media (max-width:519px){
  .container{padding:0 20px;}
  .footer-grid{padding-left:20px;padding-right:20px;}
  .hero-cat-media::before{display:none;}
  .check-list li,.plan-list li{font-size:14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important;}
}