:root{--bg:#F7F4FF;--surface:#fff;--soft:#EEF2FF;--title:#1B1340;--text:#2F2A4A;--muted:#5B5678;--hint:#8B86A3;--purple:#7C3AED;--light-purple:#A78BFA;--teal:#14B8A6;--coral:#F97316;--pink:#E11D48;--amber:#F59E0B;--indigo:#312E81;--border:rgba(124,58,237,.14);--shadow:0 16px 40px rgba(49,46,129,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}.site-header{position:relative;z-index:100}.desktop-brandbar{position:fixed;top:14px;left:50%;transform:translateX(-50%);width:min(1080px,calc(100% - 32px));height:64px;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border:1px solid var(--border);border-radius:999px;box-shadow:var(--shadow);display:grid;grid-template-columns:auto 1fr auto 1fr auto;gap:10px;align-items:center;padding:8px 10px}.pill-group{display:flex;gap:6px}.left-pills{justify-content:flex-end}.right-pills{justify-content:flex-start}.nav-pill,.mobile-app-link,.btn,.preset-links a{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:0 14px;font-weight:700;color:var(--muted);transition:.2s}.nav-pill:hover,.nav-pill:focus-visible,.mobile-app-link:hover,.mobile-app-link:focus-visible,.preset-links a:hover,.preset-links a:focus-visible{background:var(--soft);color:var(--purple);outline:none}.nav-pill.active{border:1px solid var(--purple);color:var(--purple);background:#fff}.round-btn{width:44px;height:44px;border:none;border-radius:50%;background:var(--soft);color:var(--title);font-size:20px;cursor:pointer}.round-btn:focus-visible{outline:3px solid rgba(124,58,237,.25)}.brand-center{display:flex;justify-content:center;align-items:center;min-width:92px;font-weight:900;color:var(--title);letter-spacing:.04em}.brand-center img,.mobile-logo img{max-height:36px;width:auto}.mobile-topbar{display:none}main{padding-top:104px}.page-shell{width:min(1200px,calc(100% - 32px));margin:0 auto}.hero-card,.section-card,.mosaic-card,.service-card,.folder-item,.faq-item,.timeline-item,.career-card,.article-card,.terms-block{background:var(--surface);border:1px solid var(--border);border-radius:24px;box-shadow:var(--shadow)}.hero-card{display:grid;grid-template-columns:1.15fr .85fr;gap:38px;align-items:center;padding:38px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--purple);font-weight:900;letter-spacing:.08em;text-transform:uppercase}.eyebrow:before{content:"";width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--purple),var(--teal))}h1,h2,h3{color:var(--title);line-height:1.2;margin-top:0}h1{font-size:clamp(36px,5vw,68px);margin:.25em 0}.hero-card p{font-size:18px;color:var(--muted)}.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.btn{background:linear-gradient(135deg,#A78BFA 0%,#7C3AED 50%,#14B8A6 100%);color:#fff;padding:0 20px}.btn.secondary{background:#fff;color:var(--purple);border:1px solid var(--border)}.media-slot{background:linear-gradient(145deg,var(--soft),#fff);border-radius:24px;min-height:260px;display:grid;place-items:center;overflow:hidden;border:1px dashed var(--border)}.media-slot img{width:100%;height:100%;object-fit:contain}.section{padding:42px 0}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:20px}.section-head p{max-width:680px;margin:0;color:var(--muted)}.tag-track,.card-grid,.career-grid,.topics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.tag-card,.mini-card{background:#fff;border:1px solid var(--border);border-radius:20px;padding:20px}.tag-card .color-dot{width:12px;height:12px;border-radius:50%;display:inline-block;margin-right:8px}.tag-card:nth-child(4n+1) .color-dot{background:var(--purple)}.tag-card:nth-child(4n+2) .color-dot{background:var(--teal)}.tag-card:nth-child(4n+3) .color-dot{background:var(--coral)}.tag-card:nth-child(4n) .color-dot{background:var(--pink)}.split-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:24px}.number-list{display:grid;gap:10px}.number-list a{background:#fff;border-radius:18px;border:1px solid var(--border);padding:16px 18px;font-weight:800}.number-list b{font-size:26px;color:var(--purple);margin-right:12px}.section-card{padding:28px}.mosaic{display:grid;grid-template-columns:1.35fr .65fr;grid-template-rows:auto auto;gap:18px}.mosaic-card{padding:22px}.mosaic-card:first-child{grid-row:1/3}.mosaic-card .media-slot{min-height:180px;margin-bottom:16px}.feature-pair{display:grid;grid-template-columns:1fr 1fr;gap:18px}.topics-grid{grid-auto-rows:minmax(150px,auto)}.topics-grid .mini-card:nth-child(2),.topics-grid .mini-card:nth-child(5){grid-row:span 2}.folder-list{display:grid;gap:12px}.folder-item{padding:20px 22px;display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center}.folder-icon{width:46px;height:36px;border-radius:10px;background:var(--soft);position:relative}.folder-icon:before{content:"";position:absolute;top:-7px;left:6px;width:20px;height:9px;border-radius:5px 5px 0 0;background:var(--light-purple)}.rank-list{display:grid;gap:12px}.rank-item{display:grid;grid-template-columns:80px 1fr;gap:18px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:22px;padding:18px}.rank-num{font-size:48px;font-weight:1000;line-height:1;background:linear-gradient(135deg,var(--purple),var(--teal),var(--coral));-webkit-background-clip:text;color:transparent}.timeline{position:relative;padding-left:30px}.timeline:before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:var(--border)}.timeline-item{position:relative;padding:20px;margin-bottom:14px}.timeline-item:before{content:"";position:absolute;left:-28px;top:28px;width:12px;height:12px;border-radius:50%;background:var(--purple);box-shadow:0 0 0 5px var(--bg)}.status{display:inline-flex;border-radius:999px;background:var(--soft);color:var(--purple);padding:4px 10px;font-weight:800;font-size:13px}.service-card{padding:30px;display:grid;grid-template-columns:.7fr 1.3fr;gap:26px;align-items:center}.service-card .media-slot{min-height:320px}.article-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.article-card,.career-card,.terms-block{padding:24px}.career-grid{grid-template-columns:repeat(3,1fr)}.terms-list{display:grid;gap:16px}.faq-list{display:grid;gap:14px}.faq-item{padding:22px}.faq-item h2{font-size:22px}.notice{background:linear-gradient(135deg,rgba(167,139,250,.18),rgba(20,184,166,.12));border:1px solid var(--border);border-radius:20px;padding:18px 20px}.kicker{color:var(--purple);font-weight:900}.site-footer{background:#1B1340;color:#F4F0FF;margin-top:56px}.footer-shell{width:min(1200px,calc(100% - 32px));margin:0 auto;padding:48px 0 100px}.footer-brand{display:flex;gap:14px;align-items:center;margin-bottom:28px}.footer-brand img{max-height:42px;width:auto}.footer-brand div{display:grid}.footer-brand span{opacity:.72}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}.footer-grid h2{color:#fff;font-size:15px}.footer-grid a{display:block;padding:5px 0;color:#E8E3FF}.footer-grid a:hover{text-decoration:underline}.footer-note{opacity:.8;max-width:850px;margin-top:28px}.copyright{opacity:.62}.overlay{position:fixed;inset:0;background:rgba(27,19,64,.32);backdrop-filter:blur(3px);z-index:140;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.open{opacity:1;visibility:visible;pointer-events:auto}.drawer{position:fixed;z-index:150;left:50%;bottom:0;transform:translate(-50%,110%);width:min(720px,100%);max-height:78vh;background:#fff;border-radius:28px 28px 0 0;box-shadow:0 -20px 60px rgba(49,46,129,.18);padding:22px;overflow:auto;visibility:hidden;pointer-events:none;transition:.25s}.drawer.open{transform:translate(-50%,0);visibility:visible;pointer-events:auto}.drawer-head,.search-head{display:flex;align-items:center;justify-content:space-between;gap:16px}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-brand img{max-height:34px}.drawer-groups{display:grid;grid-template-columns:1fr 1fr;gap:18px}.drawer-groups h2{font-size:15px;margin-bottom:8px;color:var(--purple)}.drawer-groups a{display:grid;gap:2px;padding:12px;border-radius:16px}.drawer-groups a:hover{background:var(--soft)}.drawer-groups span{font-size:13px;color:var(--muted)}.search-layer{position:fixed;z-index:160;left:50%;top:88px;transform:translateX(-50%) translateY(-20px);width:min(760px,calc(100% - 32px));opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-layer.open{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}.search-card{background:#fff;border-radius:26px;padding:22px;box-shadow:var(--shadow);border:1px solid var(--border)}.fake-search{display:flex;gap:12px;align-items:center;background:var(--soft);border-radius:18px;padding:14px 18px;margin:18px 0}.fake-search p{margin:0;color:var(--muted)}.preset-links{display:flex;gap:10px;flex-wrap:wrap}.preset-links a{background:#fff;border:1px solid var(--border)}.mobile-island{display:none}
@media (max-width:980px){.desktop-brandbar{display:none}.mobile-topbar{display:grid;grid-template-columns:44px 1fr auto;align-items:center;gap:10px;position:fixed;top:10px;left:16px;right:16px;height:58px;background:rgba(255,255,255,.94);border:1px solid var(--border);border-radius:22px;padding:7px 8px;box-shadow:var(--shadow);backdrop-filter:blur(14px)}.mobile-logo{justify-self:center;font-weight:900;color:var(--title)}.mobile-app-link{padding:0 14px;background:var(--soft);color:var(--purple)}main{padding-top:88px}.tag-track,.card-grid{grid-template-columns:repeat(2,1fr)}.hero-card,.service-card{grid-template-columns:1fr}.mosaic{grid-template-columns:1fr}.mosaic-card:first-child{grid-row:auto}.career-grid,.topics-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}.mobile-island{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;z-index:120;left:16px;right:16px;bottom:calc(10px + env(safe-area-inset-bottom));height:52px;background:rgba(255,255,255,.95);border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow);backdrop-filter:blur(14px);padding:4px}.mobile-island a{display:grid;place-items:center;font-size:12px;color:var(--muted);position:relative}.mobile-island .dot{width:5px;height:5px;border-radius:50%;background:transparent;position:absolute;top:3px}.mobile-island a.active{color:var(--purple);font-weight:900}.mobile-island a.active .dot{background:var(--purple)}.footer-shell{padding-bottom:130px}}
@media (max-width:680px){.page-shell{width:min(100% - 32px,1200px)}.hero-card{padding:24px}.hero-card p{font-size:16px}.section{padding:30px 0}.section-head{display:block}.tag-track,.card-grid,.career-grid,.topics-grid,.article-grid{grid-template-columns:1fr}.feature-pair,.split-layout{grid-template-columns:1fr}.folder-item{grid-template-columns:auto 1fr}.folder-item>a:last-child{grid-column:2}.rank-item{grid-template-columns:58px 1fr}.rank-num{font-size:38px}.footer-grid{grid-template-columns:1fr 1fr}.drawer-groups{grid-template-columns:1fr}.drawer{padding-bottom:90px}.search-layer{top:0;left:0;transform:none;width:100%;height:100vh;background:var(--bg);padding:16px}.search-layer.open{transform:none}.search-card{min-height:calc(100vh - 32px)}.topics-grid .mini-card:nth-child(2),.topics-grid .mini-card:nth-child(5){grid-row:auto}}