/* roulang page: index */
:root{
  --ink:#0B0C10;
  --charcoal:#171A22;
  --paper:#F6F4EF;
  --paper2:#ECE8DF;
  --violet:#6C4CF1;
  --violet-d:#5638D6;
  --cyan:#24D6C4;
  --amber:#FFB03A;
  --coral:#FF5C6C;
  --text:#1B1D24;
  --muted:#626775;
  --line:rgba(11,12,16,.12);
  --radius:12px;
  --shadow:0 10px 30px rgba(11,12,16,.08);
}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8;color:var(--text);background:var(--paper);-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
h1,h2,h3{margin:0;line-height:1.25;letter-spacing:.01em;font-weight:800}
p{margin:0 0 14px}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.sec{padding:88px 0}
.sec-alt{background:var(--paper2)}
.sec-dark{background:var(--charcoal);color:#fff}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--violet)}
.eyebrow::before{content:"";width:8px;height:8px;background:var(--violet);border-radius:2px}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:40px}
.sec-head h2{font-size:clamp(26px,3.2vw,38px);max-width:640px}
.sec-head p{color:var(--muted);font-size:15px;max-width:440px;margin:0}
.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 26px;border-radius:10px;border:1px solid transparent;font-size:15px;font-weight:600;transition:background .24s ease,color .24s ease,transform .24s ease,box-shadow .24s ease}
.btn:focus-visible{outline:3px solid var(--cyan);outline-offset:2px}
.btn-primary{background:var(--violet);color:#fff}
.btn-primary:hover{background:var(--violet-d);transform:translateY(-1px);box-shadow:0 8px 22px rgba(108,76,241,.3)}
.btn-ghost{border-color:var(--ink);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-on-dark{border-color:rgba(255,255,255,.6);color:#fff}
.btn-on-dark:hover{background:#fff;color:var(--ink)}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(246,244,239,.97);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.color-bar{height:3px;background:linear-gradient(to right,var(--violet) 0 25%,var(--cyan) 25% 50%,var(--amber) 50% 75%,var(--coral) 75% 100%)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{position:relative;width:38px;height:38px;border-radius:9px;background:var(--ink);display:grid;place-items:center;color:#fff;font-size:20px;font-weight:900;overflow:hidden}
.brand-mark::after{content:"";position:absolute;right:0;bottom:0;width:12px;height:12px;background:var(--violet)}
.brand-name{font-size:18px;font-weight:800;letter-spacing:.02em}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:8px;font-size:15px;font-weight:500;color:var(--text);transition:background .2s ease,color .2s ease}
.nav-links a:hover{color:var(--violet);background:rgba(108,76,241,.08)}
.nav-links a.is-active{color:var(--violet);background:rgba(108,76,241,.1);box-shadow:inset 0 -2px 0 var(--violet);font-weight:700}
.nav-actions{display:flex;align-items:center;gap:12px}
.icon-btn{width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line);border-radius:10px;background:transparent;transition:border-color .2s ease,color .2s ease}
.icon-btn:hover{border-color:var(--violet);color:var(--violet)}
.icon-btn svg{width:18px;height:18px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:transparent;flex-direction:column;gap:5px;align-items:center;justify-content:center}
.nav-toggle span{width:18px;height:2px;background:var(--ink)}

/* hero */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;padding-bottom:56px}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.4}
.hero-mask{position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,12,16,.95) 0%,rgba(11,12,16,.76) 52%,rgba(11,12,16,.5) 100%),repeating-linear-gradient(135deg,rgba(108,76,241,.18) 0 2px,transparent 2px 28px)}
.hero-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:56px;padding-top:92px;padding-bottom:56px}
.hero-copy{max-width:680px}
.hero-copy h1{font-size:clamp(34px,4.4vw,58px);font-weight:900;margin:18px 0 0}
.hero-lead{color:rgba(255,255,255,.78);font-size:17px;line-height:1.85;margin:22px 0 30px;max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-side{flex:0 0 320px;width:320px}
.hero-play{width:64px;height:64px;border-radius:50%;background:var(--violet);display:grid;place-items:center;margin-bottom:22px;transition:transform .24s ease,background .24s ease}
.hero-play:hover{background:var(--violet-d);transform:scale(1.05)}
.hero-play::before{content:"";width:0;height:0;border-left:18px solid #fff;border-top:11px solid transparent;border-bottom:11px solid transparent;margin-left:4px}
.hero-card{border-radius:var(--radius);overflow:hidden;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06)}
.hero-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.hero-card div{padding:12px 14px}
.hero-card b{display:block;font-size:14px;color:var(--cyan)}
.hero-card span{font-size:14px;color:rgba(255,255,255,.8)}
.hero-stats{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;border-top:1px solid rgba(255,255,255,.16);padding-top:26px}
.hero-stats b{display:block;font-size:26px;font-weight:800;letter-spacing:.02em}
.hero-stats span{font-size:13px;color:rgba(255,255,255,.62)}

/* 指标看板 */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.kpi{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px 22px;position:relative;overflow:hidden;transition:transform .24s ease,box-shadow .24s ease}
.kpi::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--violet)}
.kpi:nth-child(2)::before{background:var(--cyan)}
.kpi:nth-child(3)::before{background:var(--amber)}
.kpi:nth-child(4)::before{background:var(--coral)}
.kpi:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.kpi b{display:block;font-size:clamp(38px,4.4vw,56px);font-weight:800;line-height:1.1;letter-spacing:.01em}
.kpi em{display:block;font-style:normal;font-size:13px;color:var(--muted);margin-top:6px}
.kpi-bar{display:flex;gap:4px;margin-top:16px}
.kpi-bar i{display:block;height:6px;border-radius:3px;background:rgba(108,76,241,.18);flex:1}
.kpi-bar i.on{background:var(--violet)}
.kpi:nth-child(2) .kpi-bar i.on{background:var(--cyan)}
.kpi:nth-child(3) .kpi-bar i.on{background:var(--amber)}
.kpi:nth-child(4) .kpi-bar i.on{background:var(--coral)}
.kpi-note{font-size:12px;color:var(--muted);margin:18px 0 0}

/* 服务矩阵 */
.svc-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:20px}
.svc-lg{grid-column:span 3;background:var(--charcoal);color:#fff;border-radius:var(--radius);padding:30px;display:flex;flex-direction:column;gap:12px;border-left:4px solid var(--violet);transition:transform .24s ease}
.svc-lg:nth-child(2){border-left-color:var(--cyan)}
.svc-lg:hover{transform:translateY(-4px)}
.svc-lg .num{font-size:13px;font-weight:700;color:var(--cyan);letter-spacing:.14em}
.svc-lg h3{font-size:22px}
.svc-lg p{color:rgba(255,255,255,.72);font-size:15px;margin:0}
.svc-sm{grid-column:span 3;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease}
.svc-sm:hover{transform:translateY(-4px);border-color:var(--violet);box-shadow:var(--shadow)}
.svc-sm h3{font-size:19px;margin-bottom:8px}
.svc-sm p{color:var(--muted);font-size:14.5px;margin:0}
.svc-tag{display:inline-block;font-size:12px;font-weight:700;padding:2px 10px;border-radius:999px;border:1px solid var(--line);color:var(--muted);margin-bottom:12px}

/* 频道矩阵 */
.ch-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.ch-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease}
.ch-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;border-radius:var(--radius) 0 0 var(--radius);background:var(--violet)}
.ch-card:nth-child(2)::before{background:var(--cyan)}
.ch-card:nth-child(3)::before{background:var(--amber)}
.ch-card:nth-child(4)::before{background:var(--coral)}
.ch-card:nth-child(5)::before{background:var(--cyan)}
.ch-card:nth-child(6)::before{background:var(--violet)}
.ch-card:nth-child(7)::before{background:var(--amber)}
.ch-card:nth-child(8)::before{background:var(--coral)}
.ch-card:hover{transform:translateY(-4px);border-color:var(--violet);box-shadow:var(--shadow)}
.ch-card h3{font-size:19px;margin-bottom:6px}
.ch-card p{font-size:14px;color:var(--muted);margin:0 0 14px}
.ch-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted)}
.ch-meta .arrow{font-size:16px;color:var(--violet)}

/* 对比 */
.cmp-grid{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.cmp-col{padding:30px}
.cmp-col + .cmp-col{border-left:1px solid var(--line);background:rgba(108,76,241,.05);box-shadow:inset 0 0 0 1px rgba(108,76,241,.35)}
.cmp-col h3{font-size:19px;margin-bottom:18px}
.cmp-row{display:grid;grid-template-columns:88px 1fr;gap:12px;padding:12px 0;border-top:1px solid var(--line);font-size:14.5px}
.cmp-row:first-of-type{border-top:0}
.cmp-row span{color:var(--muted);font-size:13.5px}
.cmp-row b{font-weight:600}
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--violet);margin-right:8px;vertical-align:1px}
.dot.c{background:var(--cyan)}
.dot.a{background:var(--amber)}
.cmp-bar{margin-top:20px;font-size:13px;color:var(--muted)}
.cmp-bar i{display:block;height:8px;border-radius:4px;background:var(--paper2);margin-top:6px;overflow:hidden}
.cmp-bar i::after{content:"";display:block;height:100%;width:64%;background:var(--violet)}
.cmp-bar.alt i::after{width:88%;background:var(--cyan)}

/* 热门片单 */
.rank-grid{display:grid;grid-template-columns:7fr 5fr;gap:32px}
.rank-list{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.rank-row{display:grid;grid-template-columns:36px 56px 1fr auto;gap:16px;align-items:center;padding:12px 18px;border-bottom:1px solid var(--line);transition:background .2s ease}
.rank-row:last-child{border-bottom:0}
.rank-row:hover{background:#F1EDFF}
.rank-row img{width:56px;height:84px;object-fit:cover;border-radius:8px}
.rank-num{font-size:20px;font-weight:800;color:var(--violet)}
.rank-row:nth-child(2) .rank-num{color:var(--cyan)}
.rank-row:nth-child(3) .rank-num{color:var(--amber)}
.rank-row:nth-child(n+4) .rank-num{color:var(--muted)}
.rank-title{font-size:16px;font-weight:700;display:block}
.rank-sub{font-size:13px;color:var(--muted)}
.chip{display:inline-block;font-size:12px;padding:2px 10px;border-radius:999px;border:1px solid var(--line);color:var(--muted);margin-right:6px}
.rank-score{font-size:18px;font-weight:800;color:var(--violet)}
.poster-col{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.poster-card{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#fff;transition:transform .24s ease,box-shadow .24s ease}
.poster-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.poster-card img{width:100%;aspect-ratio:2/3;object-fit:cover}
.poster-badge{position:absolute;top:10px;left:10px;width:32px;height:32px;display:grid;place-items:center;background:var(--ink);color:#fff;font-size:14px;font-weight:800;border-radius:6px}
.poster-card .cap{padding:10px 12px}
.poster-card .cap b{display:block;font-size:14px}
.poster-card .cap span{font-size:12px;color:var(--muted)}

/* 里程碑 */
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:24px}
.tl-item{border-top:1px solid var(--line);padding-top:20px;position:relative;transition:border-color .24s ease}
.tl-item:nth-child(even){margin-top:36px}
.tl-item:hover{border-color:var(--violet)}
.tl-num{display:grid;place-items:center;width:32px;height:32px;border-radius:6px;background:var(--ink);color:#fff;font-size:13px;font-weight:800;margin-bottom:14px}
.tl-item:nth-child(2) .tl-num{background:var(--violet)}
.tl-item:nth-child(3) .tl-num{background:var(--cyan);color:var(--ink)}
.tl-item:nth-child(4) .tl-num{background:var(--amber);color:var(--ink)}
.tl-item:nth-child(5) .tl-num{background:var(--coral)}
.tl-year{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--muted)}
.tl-item h3{font-size:18px;margin:6px 0 8px}
.tl-item p{font-size:14px;color:var(--muted);margin:0}

/* 专题 */
.special-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px}
.special-main{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--charcoal);color:#fff}
.special-main img{width:100%;aspect-ratio:16/9;object-fit:cover;opacity:.72}
.special-main .body{position:absolute;left:0;right:0;bottom:0;padding:32px;background:linear-gradient(to top,rgba(11,12,16,.94),rgba(11,12,16,0))}
.special-main .body h3{font-size:clamp(20px,2.4vw,28px);margin:10px 0 10px}
.special-main .body p{color:rgba(255,255,255,.75);font-size:14.5px;margin:0 0 18px;max-width:520px}
.tag{display:inline-block;font-size:12px;font-weight:700;padding:3px 12px;border-radius:999px;background:var(--violet);color:#fff}
.special-mini{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.mini-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .24s ease,border-color .24s ease}
.mini-card:hover{transform:translateY(-4px);border-color:var(--violet)}
.mini-card img{width:100%;aspect-ratio:1/1;object-fit:cover}
.mini-card .body{padding:10px 12px}
.mini-card span{font-size:12px;color:var(--violet);font-weight:700}
.mini-card b{display:block;font-size:14px;margin-top:2px}

/* 资讯 */
.news-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.news-item{display:flex;gap:16px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease}
.news-item:hover{transform:translateY(-3px);border-color:var(--violet);box-shadow:var(--shadow)}
.news-item img{width:160px;height:90px;flex:0 0 160px;object-fit:cover;border-radius:8px}
.news-meta{font-size:12px;color:var(--muted)}
.news-item h3{font-size:16px;margin:4px 0 0;line-height:1.5}
.news-more{display:flex;justify-content:center;margin-top:36px}

/* 保障 */
.trust{padding:60px 0;border-top:4px solid var(--violet)}
.trust .sec-head h2{color:#fff}
.trust .sec-head p{color:rgba(255,255,255,.62)}
.trust-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid rgba(255,255,255,.14)}
.trust-item{padding:26px 22px;border-left:1px solid rgba(255,255,255,.14)}
.trust-item:first-child{border-left:0;padding-left:0}
.trust-item i{display:block;width:10px;height:10px;border-radius:2px;background:var(--cyan);margin-bottom:14px}
.trust-item h3{font-size:16px;margin-bottom:6px;color:#fff}
.trust-item p{font-size:13.5px;color:rgba(255,255,255,.62);margin:0}

/* 快速解答 */
.quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.quick-card{background:#fff;border-radius:10px;padding:24px;border-left:3px solid var(--violet)}
.quick-card:nth-child(2){border-left-color:var(--cyan)}
.quick-card:nth-child(3){border-left-color:var(--amber)}
.quick-card:nth-child(4){border-left-color:var(--coral)}
.quick-card h3{font-size:16px;margin-bottom:8px}
.quick-card p{font-size:14px;color:var(--muted);margin:0}

/* FAQ */
.faq-wrap{max-width:920px}
.faq-item{background:#fff;border:1px solid var(--line);border-left:3px solid transparent;border-radius:10px;margin-bottom:12px;transition:border-color .2s ease}
.faq-item[open]{border-left-color:var(--violet)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;font-size:16px;font-weight:700;transition:color .2s ease;min-height:44px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--violet)}
.faq-item summary:focus-visible{outline:3px solid var(--cyan);outline-offset:-3px;border-radius:8px}
.faq-item summary::after{content:"+";font-size:22px;font-weight:400;color:var(--violet);line-height:1}
.faq-item[open] summary::after{content:"−"}
.faq-item p{padding:0 22px 20px;margin:0;font-size:14.5px;color:var(--muted)}

/* 表单 */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.contact-side h2{font-size:clamp(24px,3vw,34px);margin-bottom:16px}
.contact-side p{color:var(--muted);font-size:15px}
.contact-list{margin-top:24px}
.contact-list li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);padding:7px 0}
.contact-list li::before{content:"";flex:0 0 8px;height:8px;border-radius:2px;background:var(--violet);margin-top:9px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:32px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px}
.field input,.field select,.field textarea{width:100%;min-height:48px;padding:10px 14px;font:inherit;font-size:15px;color:var(--text);background:var(--paper);border:1px solid var(--line);border-radius:10px;transition:border-color .2s ease,box-shadow .2s ease}
.field textarea{min-height:110px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(36,214,196,.28)}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);margin:4px 0 22px}
.check input{width:18px;height:18px;margin-top:3px;accent-color:var(--violet)}
.form-tip{font-size:12.5px;color:var(--muted);margin:14px 0 0}

/* footer */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding:0 0 28px}
.foot-bar{height:4px;background:linear-gradient(to right,var(--violet) 0 25%,var(--cyan) 25% 50%,var(--amber) 50% 75%,var(--coral) 75% 100%)}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding:56px 0 40px}
.foot-brand{display:flex;align-items:center;gap:12px;color:#fff;margin-bottom:14px}
.foot-grid p{font-size:14px;line-height:1.8;margin:0 0 10px}
.foot-grid h4{font-size:14px;color:#fff;margin:0 0 14px;letter-spacing:.04em}
.foot-grid li{margin-bottom:10px;font-size:14px}
.foot-grid a{transition:color .2s ease}
.foot-grid a:hover{color:var(--cyan)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.5)}

@media(max-width:1024px){
  .sec{padding:64px 0}
  .hero-inner{gap:36px}
  .hero-side{flex:0 0 260px;width:260px}
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
  .svc-lg{grid-column:span 6}
  .svc-sm{grid-column:span 3}
  .ch-grid{grid-template-columns:repeat(2,1fr)}
  .rank-grid{grid-template-columns:1fr;gap:28px}
  .timeline{grid-template-columns:repeat(3,1fr);gap:28px}
  .tl-item:nth-child(even){margin-top:0}
  .special-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
  .trust-item{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.14)}
  .trust-item:first-child{border-top:0}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:768px){
  .sec{padding:48px 0}
  .nav-links{position:absolute;top:75px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--paper);border-bottom:1px solid var(--line);padding:8px 24px 20px;display:none}
  body.nav-open .nav-links{display:flex}
  .nav-links a{height:48px;border-radius:8px}
  .nav-toggle{display:flex}
  .nav-actions .btn{display:none}
  .hero-inner{flex-direction:column;align-items:flex-start;padding-top:56px;padding-bottom:40px}
  .hero-side{width:100%;flex:none}
  .hero-stats{grid-template-columns:1fr 1fr;gap:18px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:28px}
  .sec-head p{max-width:none}
  .quick-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .poster-col{grid-template-columns:repeat(3,1fr);gap:12px}
  .news-item img{width:120px;height:80px;flex:0 0 120px}
  .timeline{grid-template-columns:1fr 1fr}
  .form-card{padding:22px}
  .hero-copy h1{font-size:clamp(30px,7vw,40px)}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .hero-stats{grid-template-columns:1fr 1fr}
  .kpi-grid{grid-template-columns:1fr 1fr;gap:14px}
  .kpi{padding:20px 16px}
  .ch-grid{grid-template-columns:1fr 1fr;gap:14px}
  .ch-card{padding:20px 16px}
  .svc-sm{grid-column:span 6}
  .trust-grid{grid-template-columns:1fr}
  .poster-col{grid-template-columns:1fr 1fr}
  .timeline{grid-template-columns:1fr}
  .rank-row{grid-template-columns:28px 48px 1fr;gap:12px;padding:10px 12px}
  .rank-row img{width:48px;height:72px}
  .rank-score{display:none}
  .news-item{flex-direction:column}
  .news-item img{width:100%;height:auto;aspect-ratio:16/9;flex:none}
  .foot-grid{grid-template-columns:1fr;gap:26px;padding:40px 0 28px}
  .btn{width:100%}
  .hero-actions .btn{width:100%}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}