:root{--bg:#F7F4FF;--paper:#fff;--soft:#EEF2FF;--title:#1B1340;--text:#2F2A4A;--muted:#5B5678;--sub:#8B86A3;--purple:#7C3AED;--violet:#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);--max:1200px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}button,input{font:inherit}.modal-open{overflow:hidden}.floating-header{position:fixed;z-index:80;top:14px;left:0;right:0;pointer-events:none}.brand-bar{max-width:1080px;height:64px;margin:auto;padding:8px 10px;border:1px solid var(--border);border-radius:32px;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);box-shadow:var(--shadow);display:grid;grid-template-columns:auto 1fr auto 1fr auto;align-items:center;gap:10px;pointer-events:auto}.desktop-nav{display:flex;align-items:center;gap:6px;min-width:0}.nav-left{justify-content:flex-end}.nav-right{justify-content:flex-start}.pill{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid transparent;border-radius:999px;color:var(--muted);font-weight:700;font-size:14px;white-space:nowrap}.pill:hover,.pill:focus-visible,.pill.is-active{border-color:var(--purple);color:var(--purple);outline:none}.brand-mark{width:76px;height:46px;display:flex;align-items:center;justify-content:center;border-radius:22px;background:var(--soft);color:var(--indigo);font-weight:900;letter-spacing:.04em}.brand-mark img{max-width:62px;max-height:34px;object-fit:contain}.icon-btn{width:44px;height:44px;border:1px solid var(--border);border-radius:50%;background:#fff;color:var(--indigo);cursor:pointer;font-size:22px;line-height:1}.icon-btn:hover,.icon-btn:focus-visible{border-color:var(--purple);outline:3px solid rgba(124,58,237,.12)}.mobile-app-link{display:none}.site-shell{max-width:var(--max);margin:0 auto;padding:120px 24px 70px}.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;min-height:560px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--purple);font-weight:900;letter-spacing:.16em;font-size:13px}.hero h1,.page-hero h1{font-size:clamp(38px,6vw,72px);line-height:1.05;margin:16px 0 22px;color:var(--title);letter-spacing:-.04em}.hero p,.page-hero p{font-size:18px;color:var(--muted);max-width:720px}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.btn{min-height:46px;display:inline-flex;align-items:center;justify-content:center;padding:0 20px;border-radius:999px;font-weight:800}.btn-primary{color:#fff;background:linear-gradient(135deg,#A78BFA 0%,#7C3AED 50%,#14B8A6 100%);box-shadow:0 10px 24px rgba(124,58,237,.18)}.btn-light{background:#fff;border:1px solid var(--border);color:var(--indigo)}.btn:hover,.btn:focus-visible{transform:translateY(-1px);outline:3px solid rgba(124,58,237,.12)}.visual-card,.content-card,.info-card,.article-card,.folder-row,.step-card,.faq-item{background:var(--paper);border:1px solid var(--border);border-radius:24px;box-shadow:var(--shadow)}.visual-card{padding:22px}.image-placeholder{min-height:280px;border-radius:20px;background:linear-gradient(135deg,rgba(167,139,250,.20),rgba(20,184,166,.12));border:1px dashed rgba(124,58,237,.18)}.section{padding:54px 0}.section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:24px}.section-head h2{margin:0;color:var(--title);font-size:clamp(28px,4vw,46px);line-height:1.15}.section-head p{margin:0;color:var(--muted);max-width:620px}.tag-track{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.tag-item{padding:20px;border-radius:20px;background:#fff;border:1px solid var(--border)}.tag-item i{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:8px;background:var(--purple)}.tag-item:nth-child(4n+2) i{background:var(--teal)}.tag-item:nth-child(4n+3) i{background:var(--coral)}.tag-item:nth-child(4n+4) i{background:var(--pink)}.tag-item h3{margin:8px 0;color:var(--title);font-size:18px}.tag-item p{margin:0;color:var(--muted);font-size:14px}.split{display:grid;grid-template-columns:.8fr 1.2fr;gap:24px}.number-list{display:flex;flex-direction:column;gap:10px}.number-list a{background:#fff;border:1px solid var(--border);border-radius:18px;padding:16px 18px;font-weight:850;color:var(--title)}.number-list span{font-size:28px;margin-right:10px;color:var(--purple)}.feature-copy{padding:30px}.feature-copy h3{font-size:32px;color:var(--title);margin:0 0 14px}.mosaic{display:grid;grid-template-columns:1.25fr .75fr;grid-template-areas:"a b" "a c";gap:18px}.mosaic .content-card{padding:20px;overflow:hidden}.mosaic .content-card:nth-child(1){grid-area:a}.mosaic .content-card:nth-child(2){grid-area:b}.mosaic .content-card:nth-child(3){grid-area:c}.content-card h3,.article-card h2,.info-card h3{color:var(--title);margin:16px 0 8px}.content-card p,.article-card p,.info-card p{color:var(--muted)}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:20px}.wall{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:minmax(150px,auto);gap:16px}.wall article{padding:22px;background:#fff;border:1px solid var(--border);border-radius:22px}.wall article:nth-child(2),.wall article:nth-child(5){grid-row:span 2}.folder-list{display:grid;gap:12px}.folder-row{padding:18px 20px;display:grid;grid-template-columns:52px 1fr auto;align-items:center;gap:16px}.folder-row strong{color:var(--title)}.folder-row small{color:var(--sub)}.rank-list{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.rank-item{padding:20px;background:#fff;border-radius:22px;border:1px solid var(--border)}.rank-item b{font-size:42px;line-height:1;color:var(--purple)}.rank-item:nth-child(2) b{color:var(--teal)}.rank-item:nth-child(3) b{color:var(--coral)}.rank-item:nth-child(4) b{color:var(--pink)}.rank-item:nth-child(5) b{color:var(--amber)}.timeline{position:relative;padding-left:30px;display:grid;gap:18px}.timeline:before{content:"";position:absolute;left:9px;top:5px;bottom:5px;width:2px;background:rgba(124,58,237,.18)}.timeline article{position:relative;background:#fff;border-radius:20px;border:1px solid var(--border);padding:18px 20px}.timeline article:before{content:"";position:absolute;left:-27px;top:24px;width:12px;height:12px;border-radius:50%;background:var(--purple);box-shadow:0 0 0 6px var(--bg)}.status{display:inline-flex;padding:3px 9px;border-radius:99px;background:var(--soft);color:var(--indigo);font-size:12px;font-weight:800}.page-hero{padding:130px 0 34px}.page-hero .hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center}.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.article-card{padding:24px}.article-card h2{font-size:23px}.wide-article{padding:30px}.wide-article h2{color:var(--title);font-size:30px;margin-top:0}.wide-article h3{color:var(--indigo);font-size:21px;margin-top:28px}.wide-article p,.wide-article li{color:var(--muted)}.note-callout{padding:20px;border-left:4px solid var(--purple);background:#fff;border-radius:0 20px 20px 0}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.step-card{padding:22px}.step-card b{display:inline-flex;width:38px;height:38px;border-radius:50%;align-items:center;justify-content:center;background:var(--soft);color:var(--purple)}.faq-list{display:grid;gap:14px}.faq-item{padding:22px}.faq-item h2{font-size:20px;color:var(--title);margin:0 0 8px}.footer-wrap{max-width:var(--max);margin:auto;padding:50px 24px 88px}.site-footer{background:#1B1340;color:#F4F0FF}.footer-brand{display:flex;align-items:center;gap:14px;margin-bottom:28px}.footer-brand img{width:60px;max-height:36px;object-fit:contain}.footer-brand div{display:flex;flex-direction:column}.footer-brand strong{font-size:22px}.footer-brand span{opacity:.72}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.footer-grid h2{font-size:15px;color:#fff}.footer-grid a{display:block;padding:4px 0;color:#D9D1F2}.footer-grid a:hover,.footer-grid a:focus-visible{color:#fff;outline:none;text-decoration:underline}.footer-note{margin-top:34px;color:#D9D1F2}.copyright{color:#BFB4E3}.overlay{position:fixed;z-index:88;inset:0;background:rgba(27,19,64,.30);opacity:0;pointer-events:none;transition:.18s}.overlay.is-open{opacity:1;pointer-events:auto}.drawer{position:fixed;z-index:95;left:50%;bottom:18px;transform:translate(-50%,110%);width:min(720px,calc(100% - 24px));max-height:78vh;overflow:auto;background:#fff;border:1px solid var(--border);border-radius:28px;box-shadow:0 30px 80px rgba(49,46,129,.25);visibility:hidden;pointer-events:none;transition:.22s}.drawer.is-open{transform:translate(-50%,0);visibility:visible;pointer-events:auto}.drawer-head{position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;padding:16px 18px;background:rgba(255,255,255,.96);border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-brand img{width:56px;max-height:30px;object-fit:contain}.drawer-groups{display:grid;grid-template-columns:1fr 1fr;padding:12px 18px 24px;gap:20px}.drawer-groups section{min-width:0}.drawer-groups h2{font-size:14px;color:var(--purple);margin:10px 0}.drawer-groups a{display:block;padding:10px 0;border-bottom:1px solid rgba(124,58,237,.08)}.drawer-groups b{display:block;color:var(--title)}.drawer-groups span{display:block;color:var(--sub);font-size:12px;line-height:1.55}.search-layer{position:fixed;z-index:94;top:86px;left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transition:.18s}.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1}.search-card{max-width:760px;margin:auto;padding:20px;background:#fff;border-radius:26px;border:1px solid var(--border);box-shadow:var(--shadow)}.search-head{display:flex;justify-content:space-between;align-items:center;color:var(--title)}.search-box{display:flex;align-items:center;gap:10px;margin:16px 0;padding:0 16px;min-height:52px;border:1px solid var(--border);border-radius:18px;background:var(--soft)}.search-box input{border:0;outline:0;background:transparent;width:100%;color:var(--title)}.preset-links{display:flex;flex-wrap:wrap;gap:10px}.preset-links a{padding:9px 13px;border-radius:999px;background:#fff;border:1px solid var(--border);font-size:14px}.mobile-island{display:none}.prose-columns{columns:2;column-gap:28px}.prose-columns p{break-inside:avoid;margin-top:0}.meta-strip{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.meta-strip span{padding:6px 10px;border-radius:999px;background:#fff;border:1px solid var(--border);font-size:13px;color:var(--muted)}
@media(max-width:980px){.desktop-nav{display:none}.brand-bar{grid-template-columns:auto 1fr auto;max-width:calc(100% - 24px)}.brand-mark{justify-self:center}.search-open{display:none}.mobile-app-link{display:inline-flex;min-height:44px;align-items:center;padding:0 14px;border-radius:999px;background:var(--soft);font-weight:800;color:var(--indigo)}.hero,.page-hero .hero-grid{grid-template-columns:1fr}.hero{min-height:auto}.tag-track{grid-template-columns:repeat(2,1fr)}.mosaic{grid-template-columns:1fr;grid-template-areas:"a" "b" "c"}.rank-list{grid-template-columns:repeat(2,1fr)}.article-grid,.steps{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){body{padding-bottom:84px}.floating-header{top:8px}.brand-bar{height:56px;border-radius:24px;padding:6px 8px}.brand-mark{width:72px;height:40px}.brand-mark img{max-width:58px}.icon-btn{width:40px;height:40px}.mobile-app-link{min-height:40px}.site-shell{padding:92px 16px 44px}.hero h1,.page-hero h1{font-size:42px}.hero p,.page-hero p{font-size:16px}.section{padding:38px 0}.section-head{display:block}.section-head p{margin-top:10px}.tag-track,.two-col,.article-grid,.steps,.footer-grid,.drawer-groups{grid-template-columns:1fr}.split{grid-template-columns:1fr}.wall{grid-template-columns:1fr 1fr}.wall article:nth-child(2),.wall article:nth-child(5){grid-row:auto}.rank-list{grid-template-columns:1fr}.folder-row{grid-template-columns:42px 1fr}.folder-row small{grid-column:2}.prose-columns{columns:1}.page-hero{padding-top:96px}.drawer{bottom:0;width:100%;border-radius:26px 26px 0 0;max-height:78vh}.search-layer{top:0;bottom:0;background:var(--bg);padding:76px 16px 16px}.search-card{max-width:none;margin:0;border-radius:24px}.mobile-island{position:fixed;z-index:78;display:grid;grid-template-columns:repeat(5,1fr);left:14px;right:14px;bottom:calc(10px + env(safe-area-inset-bottom));height:52px;padding:4px;border-radius:22px;background:rgba(255,255,255,.94);border:1px solid var(--border);box-shadow:0 12px 30px rgba(49,46,129,.16);backdrop-filter:blur(12px)}.mobile-island a{position:relative;display:flex;align-items:center;justify-content:center;border-radius:17px;font-size:12px;font-weight:800;color:var(--muted)}.mobile-island a.is-active{color:var(--purple)}.mobile-island a.is-active:after{content:"";position:absolute;bottom:4px;width:5px;height:5px;border-radius:50%;background:var(--purple)}.footer-wrap{padding:42px 16px 118px}}