:root{--bg:#F6F4FC;--deep:#E8F2FA;--paper:#FFFFFF;--ink:#2A2D4A;--text:#3A3E58;--muted:#6A6E88;--assist:#8A8EAA;--purple:#7B6BB5;--blue:#6BA3D6;--lilac:#C9B8E8;--mist:#B8D4F0;--peach:#E8B4B8;--line:rgba(42,45,74,.12);--shadow:0 14px 34px rgba(42,45,74,.09)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.75 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.wrap{width:min(1140px,calc(100% - 32px));margin:auto}.top-spacer{height:99px}.site-head{position:fixed;inset:0 0 auto;z-index:50}.nation-line{height:7px;background:linear-gradient(90deg,var(--purple),var(--blue));color:#fff;overflow:visible}.nation-line-inner{height:7px;position:relative;display:flex;justify-content:space-between}.brand-mini{position:absolute;top:7px;left:0;height:26px;padding:3px 9px;background:var(--ink);color:#fff;font-size:12px;z-index:2}.plain-action{position:absolute;top:7px;right:0;border:0;background:var(--ink);color:#fff;height:26px;padding:0 12px;cursor:pointer}.nation-stage{height:48px;background:#fff;border-bottom:1px solid rgba(201,184,232,.55)}.stage-inner{height:100%;display:flex;align-items:center;justify-content:space-between}.logo-link{display:flex;align-items:center;min-height:44px}.site-logo,.footer-logo,.box-brand img{height:24px;width:auto;max-width:180px;object-fit:contain}.logo-fallback{font-weight:800;color:var(--ink);font-size:20px;letter-spacing:.04em}.stage-actions{display:flex;gap:8px;align-items:center}.menu-button,.app-link,.btn{min-height:44px;border-radius:12px;padding:9px 15px;border:1px solid var(--blue);background:#fff;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.app-link,.btn.primary{background:var(--purple);border-color:var(--purple);color:#fff}.nation-nav{height:44px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:center}.nation-nav-group{display:flex;align-items:center}.nation-nav a{position:relative;padding:10px 22px;color:var(--ink)}.nation-nav a+a:before{content:"";position:absolute;left:0;top:14px;width:1px;height:16px;background:var(--mist)}.nation-nav a.active{color:var(--purple)}.nation-nav a.active:after{content:"";position:absolute;left:20px;right:20px;bottom:4px;height:2px;background:var(--blue)}.site-main{min-height:65vh}.hero,.page-hero{padding:38px 0 24px}.hero-card,.content-card,.panel,.split-card,.quad-card,.legal-card,.faq-item{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.hero-card{padding:26px;text-align:center}.media-slot{background:linear-gradient(135deg,#eee8fa,#e5f1fb);border:1px solid var(--line);border-radius:16px;display:flex;align-items:center;justify-content:center;overflow:hidden;min-height:150px;color:var(--ink)}.media-slot.cover{max-height:210px;aspect-ratio:16/7;margin-bottom:22px}.media-slot img{display:block;max-width:100%;width:100%;height:100%;object-fit:contain;object-position:center}.media-slot.placeholder:after{content:"国产视频";font-weight:800;letter-spacing:.08em;color:var(--ink)}.eyebrow{color:var(--purple);font-weight:800;letter-spacing:.08em}.hero h1,.page-hero h1{margin:.2em 0;font-size:clamp(28px,4vw,32px);line-height:1.25;color:var(--ink)}.lead{max-width:780px;margin:12px auto;color:var(--muted)}.hero-actions,.link-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:18px}.section{padding:24px 0}.section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}.section-title h2,.content-card h2,.panel h2,.legal-card h2{margin:0;color:var(--ink);font-size:24px}.section-title p{margin:0;color:var(--muted)}.split{display:grid;grid-template-columns:1fr 1fr;gap:18px}.split-card{padding:20px}.split-card .media-slot{height:170px;margin-bottom:16px}.split-card p,.quad-card p,.content-card p,.legal-card p{margin:.6em 0}.content-card{padding:24px}.content-card .media-slot{height:176px;margin:18px 0}.content-card .media-slot.tall{height:min(420px,70vw)}.quad{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.quad-card{padding:16px}.quad-card .media-slot{height:156px;margin-bottom:13px}.quad-card h3{margin:0;color:var(--ink)}.feature-row{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(260px,.85fr);gap:20px;align-items:center}.feature-row.reverse{grid-template-columns:minmax(260px,.85fr) minmax(0,1.15fr)}.feature-row .media-slot{height:180px}.text-link{color:var(--purple);font-weight:700}.page-hero .content-card{background:linear-gradient(135deg,#fff,#edf5fb)}.page-grid{display:grid;grid-template-columns:1fr 320px;gap:20px}.article-stack{display:grid;gap:18px}.aside-stack{display:grid;gap:16px;align-content:start}.panel{padding:20px}.panel ul,.legal-card ul{padding-left:20px}.fact{border-left:4px solid var(--blue)}.opinion{border-left:4px solid var(--purple)}.notice{padding:14px 16px;background:var(--deep);border-radius:12px;color:var(--ink)}.tag-row{display:flex;flex-wrap:wrap;gap:8px}.tag{padding:4px 9px;border-radius:10px;background:#eee8fa;color:var(--ink);font-size:14px}.timeline{display:grid;gap:12px}.timeline article{padding:16px;background:#fff;border:1px solid var(--line);border-radius:14px}.timeline time{font-weight:800;color:var(--purple)}.faq-list{display:grid;gap:14px}.faq-item{padding:20px}.faq-item h2{font-size:19px;color:var(--ink);margin:0 0 8px}.faq-item p{margin:0}.footer-brand{padding:36px 0}.site-footer{margin-top:40px;background:var(--ink);color:#E8E4F6;padding-bottom:8px}.footer-logo-row{display:flex;gap:12px;align-items:center;margin-bottom:24px}.footer-logo-row strong{display:block;color:#fff}.footer-logo-row span{font-size:12px;color:var(--lilac)}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.footer-grid h2{font-size:16px;color:#fff}.footer-grid a{display:block;color:#E8E4F6;padding:5px 0}.footer-note{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;margin-top:24px}.copyright{font-size:14px;color:var(--lilac)}.overlay{position:fixed;inset:0;background:rgba(42,45,74,.34);z-index:70;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.open{opacity:1;visibility:visible;pointer-events:auto}.nation-box,.search-layer{position:fixed;z-index:80;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-8px);transition:.2s}.nation-box.open,.search-layer.open{visibility:visible;pointer-events:auto;opacity:1;transform:none}.nation-box{top:55px;left:50%;width:min(640px,calc(100% - 32px));height:360px;transform:translate(-50%,-8px);border-radius:0 0 16px 16px;border-top:3px solid var(--purple);overflow:auto}.nation-box.open{transform:translate(-50%,0)}.box-head,.search-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--line)}.box-brand{display:flex;align-items:center;gap:10px;color:var(--ink)}.close-button{min-height:44px;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:10px;padding:8px 12px;cursor:pointer}.box-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:14px}.box-grid section{padding:4px 8px}.box-grid h2{font-size:15px;color:var(--purple);margin:0 0 6px}.box-grid a{display:block;padding:7px 0}.box-grid b{display:block;color:var(--ink)}.box-grid span{font-size:13px;color:var(--muted)}.search-layer{top:55px;left:50%;width:min(420px,calc(100% - 32px));transform:translate(-50%,-8px);border-radius:0 0 16px 16px;padding-bottom:16px}.search-layer.open{transform:translate(-50%,0)}.search-layer p,.search-look,.search-links{margin:14px 16px}.search-look{padding:14px;background:var(--deep);border-radius:12px;color:var(--muted)}.search-links{display:grid;grid-template-columns:1fr 1fr;gap:8px}.search-links a{min-height:44px;padding:10px;border:1px solid var(--line);border-radius:10px;color:var(--ink)}.locked{overflow:hidden}.mobile-bottom{display:none}a:hover,.menu-button:hover,.plain-action:hover,.close-button:hover{filter:brightness(.96)}a:focus-visible,button:focus-visible{outline:3px solid var(--peach);outline-offset:3px}.muted{color:var(--muted)}.kicker{font-size:14px;color:var(--purple);font-weight:700}.list-clean{list-style:none;padding:0;margin:0;display:grid;gap:10px}.list-clean li{padding:12px;background:var(--deep);border-radius:12px}.two-col{columns:2;column-gap:24px}.app-showcase{display:grid;grid-template-columns:minmax(240px,.7fr) 1.3fr;gap:24px;align-items:center}.app-showcase .media-slot{height:420px}.mark-icon{width:72px;height:72px;object-fit:contain}.button-row{display:flex;gap:10px;flex-wrap:wrap}
@media(max-width:820px){.quad{grid-template-columns:1fr 1fr}.page-grid{grid-template-columns:1fr}.feature-row,.feature-row.reverse,.app-showcase{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){body{padding-bottom:calc(50px + env(safe-area-inset-bottom))}.top-spacer{height:55px}.nation-nav{display:none}.brand-mini,.plain-action{top:7px}.nation-stage{height:48px}.site-head{height:55px}.site-logo{max-width:145px}.stage-actions{gap:5px}.menu-button,.app-link{padding:7px 10px;min-height:44px}.hero,.page-hero{padding-top:24px}.hero-card,.content-card,.panel,.split-card,.legal-card{padding:18px}.split,.quad{grid-template-columns:1fr}.quad-card .media-slot,.split-card .media-slot,.content-card .media-slot{height:160px}.footer-grid{grid-template-columns:1fr 1fr}.nation-box{top:55px;width:calc(100% - 16px);height:60vh}.box-grid{grid-template-columns:1fr}.search-layer{top:55px;width:calc(100% - 16px)}.mobile-bottom{display:grid;position:fixed;left:0;right:0;bottom:0;z-index:60;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);grid-template-columns:repeat(5,1fr);background:#fff;border-top:1px solid var(--line)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;color:var(--ink);font-size:14px;min-width:0}.mobile-bottom a.active{background:var(--purple);color:#fff}.two-col{columns:1}.hero-actions,.link-row{justify-content:flex-start}.hero-card .hero-actions{justify-content:center}}