:root{--bg:#F7F4FF;--surface:#FFFFFF;--soft:#EEF2FF;--text:#2F2A4A;--title:#1B1340;--muted:#5B5678;--faint:#8B86A3;--purple:#7C3AED;--purple2:#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);--radius:24px}
*{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.is-locked{overflow:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}button,input{font:inherit}button{cursor:pointer}a,button{min-height:44px}.top-shell{position:fixed;top:0;left:0;right:0;z-index:80;pointer-events:none}.brand-bar{pointer-events:auto}.desktop-brand-bar{height:64px;max-width:1080px;margin:14px auto 0;padding:8px 10px;border:1px solid var(--border);background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-radius:999px;box-shadow:var(--shadow);display:grid;grid-template-columns:46px 1fr auto 1fr 46px;align-items:center;gap:8px}.pill-nav{display:flex;gap:6px;align-items:center}.pill-nav:first-of-type{justify-content:flex-end}.pill-nav:last-of-type{justify-content:flex-start}.nav-pill{display:inline-flex;align-items:center;justify-content:center;padding:0 12px;border:1px solid transparent;border-radius:999px;font-size:13px;color:var(--muted);white-space:nowrap}.nav-pill:hover,.nav-pill:focus-visible{background:var(--soft);color:var(--purple);outline:none}.nav-pill.is-current{border-color:var(--purple);color:var(--purple);background:#fff}.brand-mark{min-width:98px;display:flex;align-items:center;justify-content:center;font-weight:900;color:var(--title);letter-spacing:.08em}.brand-mark img{max-height:38px;max-width:108px}.circle-control{width:44px;height:44px;min-height:44px;border:1px solid var(--border);border-radius:50%;background:#fff;color:var(--indigo);font-size:20px;display:grid;place-items:center}.circle-control:hover,.circle-control:focus-visible{border-color:var(--purple);color:var(--purple);outline:3px solid rgba(124,58,237,.12)}.mobile-brand-bar{display:none}#main-content{max-width:1200px;margin:0 auto;padding:112px 24px 80px}.section{margin:0 0 44px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--purple);font-weight:800;font-size:13px;letter-spacing:.12em;text-transform:uppercase}.eyebrow:before{content:"";width:22px;height:6px;border-radius:999px;background:linear-gradient(90deg,var(--purple2),var(--teal))}h1,h2,h3{color:var(--title);line-height:1.2;margin-top:0}h1{font-size:clamp(38px,6vw,72px);letter-spacing:-.04em;margin-bottom:18px}h2{font-size:clamp(26px,3vw,38px);margin-bottom:16px}h3{font-size:20px;margin-bottom:10px}p{margin:0 0 14px}.lead{font-size:18px;max-width:760px;color:var(--muted)}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:30px;align-items:center;padding:36px;background:rgba(255,255,255,.78);border:1px solid var(--border);border-radius:30px;box-shadow:var(--shadow)}.media-slot{min-height:260px;border-radius:26px;background:linear-gradient(145deg,#fff,var(--soft));border:1px solid var(--border);display:grid;place-items:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain}.media-slot:empty:before{content:"";width:78%;height:68%;border-radius:28px;background:radial-gradient(circle at 20% 20%,rgba(167,139,250,.38),transparent 34%),radial-gradient(circle at 80% 22%,rgba(20,184,166,.30),transparent 31%),radial-gradient(circle at 65% 75%,rgba(249,115,22,.22),transparent 30%),linear-gradient(135deg,#fff,#EEF2FF)}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:999px;font-weight:800;border:1px solid var(--border)}.btn-primary{background:linear-gradient(135deg,#A78BFA 0%,#7C3AED 50%,#14B8A6 100%);color:#fff;border:0}.btn-ghost{background:#fff;color:var(--indigo)}.btn:hover,.btn:focus-visible{transform:translateY(-1px);box-shadow:0 10px 26px rgba(49,46,129,.14);outline:3px solid rgba(124,58,237,.12)}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:0 10px 28px rgba(49,46,129,.06)}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.tag-track{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.topic-chip{background:#fff;border:1px solid var(--border);border-radius:20px;padding:18px}.topic-chip b{display:flex;align-items:center;gap:8px;color:var(--title)}.dot{width:10px;height:10px;border-radius:50%;background:var(--purple)}.topic-chip:nth-child(4n+2) .dot{background:var(--teal)}.topic-chip:nth-child(4n+3) .dot{background:var(--coral)}.topic-chip:nth-child(4n+4) .dot{background:var(--pink)}.topic-chip p{font-size:14px;color:var(--muted);margin:8px 0}.topic-chip a{font-weight:800;color:var(--purple)}.numbered{display:grid;grid-template-columns:260px 1fr;gap:24px}.number-menu{display:flex;flex-direction:column;gap:8px}.number-menu a{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:16px;background:#fff;border:1px solid var(--border)}.number-menu b{font-size:22px;color:var(--purple)}.prose{background:#fff;border:1px solid var(--border);border-radius:28px;padding:30px;box-shadow:var(--shadow)}.prose p{max-width:820px}.mosaic{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.mosaic .wide{grid-row:span 2}.feature-card{overflow:hidden}.feature-card .media-slot{min-height:190px;margin-bottom:18px}.mosaic .wide .media-slot{min-height:430px}.creator-pair{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.board-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:minmax(150px,auto);gap:14px}.board-grid article:nth-child(2),.board-grid article:nth-child(5){grid-row:span 2}.folder-list{display:grid;gap:12px}.folder{display:grid;grid-template-columns:80px 1fr auto;gap:16px;align-items:center;padding:18px 20px;background:#fff;border:1px solid var(--border);border-radius:22px}.folder .folder-icon{width:58px;height:44px;border-radius:12px 12px 16px 16px;background:linear-gradient(135deg,var(--purple2),var(--purple));position:relative}.folder .folder-icon:before{content:"";position:absolute;top:-8px;left:7px;width:25px;height:12px;border-radius:8px 8px 0 0;background:var(--purple2)}.folder small{color:var(--muted)}.rank-list{display:grid;gap:12px}.rank-item{display:grid;grid-template-columns:90px 1fr;gap:18px;align-items:start;padding:20px;background:#fff;border:1px solid var(--border);border-radius:22px}.rank-num{font-size:48px;line-height:1;font-weight:900;color:var(--purple)}.rank-item:nth-child(2) .rank-num{color:var(--teal)}.rank-item:nth-child(3) .rank-num{color:var(--coral)}.rank-item:nth-child(4) .rank-num{color:var(--pink)}.rank-item:nth-child(5) .rank-num{color:var(--amber)}.timeline{position:relative;padding-left:38px}.timeline:before{content:"";position:absolute;left:11px;top:10px;bottom:10px;width:2px;background:rgba(124,58,237,.20)}.timeline article{position:relative;background:#fff;border:1px solid var(--border);border-radius:20px;padding:20px;margin-bottom:14px}.timeline article:before{content:"";position:absolute;left:-34px;top:24px;width:14px;height:14px;border-radius:50%;background:var(--purple);box-shadow:0 0 0 7px var(--bg)}.status{display:inline-flex;padding:4px 10px;border-radius:999px;background:var(--soft);color:var(--purple);font-size:12px;font-weight:800}.step-list{counter-reset:step;display:grid;gap:14px}.step-list article{counter-increment:step;display:grid;grid-template-columns:58px 1fr;gap:18px;padding:22px;background:#fff;border:1px solid var(--border);border-radius:22px}.step-list article:before{content:counter(step,decimal-leading-zero);display:grid;place-items:center;width:52px;height:52px;border-radius:18px;background:linear-gradient(135deg,var(--purple2),var(--purple));color:#fff;font-weight:900}.article-note{border-left:4px solid var(--purple);padding-left:18px;color:var(--muted)}.index-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.index-list a{display:block;background:#fff;border:1px solid var(--border);border-radius:20px;padding:20px}.index-list a:hover,.index-list a:focus-visible{border-color:var(--purple);outline:none}.terms article{background:#fff;border:1px solid var(--border);border-radius:22px;padding:22px;margin-bottom:14px}.faq{display:grid;gap:14px}.faq article{background:#fff;border:1px solid var(--border);border-radius:22px;padding:22px}.faq h2{font-size:20px;margin-bottom:8px}.site-footer{background:#1B1340;color:#F4F0FF;padding:58px 24px 90px}.footer-inner{max-width:1200px;margin:0 auto}.footer-brand{display:flex;align-items:center;gap:14px;margin-bottom:30px}.footer-brand img{max-width:120px;max-height:48px}.footer-brand div{display:flex;flex-direction:column}.footer-brand strong{font-size:24px}.footer-brand span{color:#cfc6f1}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.footer-grid h2{color:#fff;font-size:15px}.footer-grid a{display:block;min-height:34px;color:#d8d1ef;font-size:14px}.footer-grid a:hover,.footer-grid a:focus-visible{color:#fff;outline:none;text-decoration:underline}.footer-note{margin-top:32px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);color:#d8d1ef;max-width:880px}.copyright{color:#aaa1c8;font-size:13px}.overlay{position:fixed;inset:0;background:rgba(27,19,64,.36);z-index:90;opacity:0;visibility:hidden;pointer-events:none;transition:.22s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.drawer-panel{position:fixed;left:50%;bottom:0;z-index:100;width:min(720px,100%);max-height:78vh;transform:translate(-50%,105%);background:#fff;border-radius:28px 28px 0 0;box-shadow:0 -20px 60px rgba(27,19,64,.2);visibility:hidden;pointer-events:none;transition:transform .25s ease,visibility .25s}.drawer-panel.is-open{transform:translate(-50%,0);visibility:visible;pointer-events:auto}.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--border)}.drawer-brand{display:flex;align-items:center;gap:12px}.drawer-brand img{max-height:38px;max-width:110px}.drawer-scroll{overflow:auto;max-height:calc(78vh - 80px);padding:20px}.drawer-group{margin-bottom:22px}.drawer-group h2{font-size:14px;color:var(--purple);letter-spacing:.1em}.drawer-links{display:grid;grid-template-columns:1fr 1fr;gap:10px}.drawer-links a{display:flex;flex-direction:column;justify-content:center;min-height:82px;padding:14px;border-radius:16px;background:var(--bg);border:1px solid var(--border)}.drawer-links strong{color:var(--title)}.drawer-links span{font-size:12px;color:var(--muted)}.search-layer{position:fixed;top:88px;left:50%;z-index:100;width:min(720px,calc(100% - 32px));transform:translate(-50%,-18px);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-layer.is-open{transform:translate(-50%,0);opacity:1;visibility:visible;pointer-events:auto}.search-card{background:#fff;border:1px solid var(--border);border-radius:26px;padding:22px;box-shadow:0 24px 70px rgba(49,46,129,.22)}.search-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.search-field{display:flex;align-items:center;gap:10px;padding:0 16px;min-height:54px;border:1px solid var(--border);border-radius:999px;background:var(--bg)}.search-field input{flex:1;border:0;outline:0;background:transparent;color:var(--text);min-width:0}.preset-links{display:flex;flex-wrap:wrap;gap:8px}.preset-links a{display:inline-flex;align-items:center;padding:0 14px;border-radius:999px;background:var(--soft);color:var(--purple);font-weight:800}.mobile-island{display:none}
@media(max-width:980px){.desktop-brand-bar{display:none}.mobile-brand-bar{display:grid;grid-template-columns:44px 1fr 64px;height:60px;margin:10px 16px 0;padding:7px 8px;border:1px solid var(--border);border-radius:999px;background:rgba(255,255,255,.94);box-shadow:var(--shadow);align-items:center}.mobile-brand-bar .brand-mark{min-width:0}.mobile-app-link{display:grid;place-items:center;min-height:44px;border-radius:999px;background:var(--soft);color:var(--purple);font-weight:800;font-size:14px}.brand-mark img{max-height:34px;max-width:104px}#main-content{padding:94px 16px 108px}.hero-grid,.numbered,.grid-3,.grid-4,.tag-track{grid-template-columns:1fr 1fr}.mosaic{grid-template-columns:1fr}.mosaic .wide{grid-row:auto}.mosaic .wide .media-slot{min-height:250px}.mobile-island{position:fixed;left:16px;right:16px;bottom:max(12px,env(safe-area-inset-bottom));z-index:75;height:52px;padding:4px 8px;border-radius:999px;background:rgba(255,255,255,.94);border:1px solid var(--border);box-shadow:0 16px 40px rgba(49,46,129,.18);display:grid;grid-template-columns:repeat(5,1fr);backdrop-filter:blur(16px)}.mobile-island a{min-height:44px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:11px;color:var(--muted)}.mobile-island i{width:6px;height:6px;border-radius:50%;background:transparent;margin-bottom:2px}.mobile-island a.is-current{color:var(--purple);font-weight:800}.mobile-island a.is-current i{background:var(--purple)}.site-footer{padding-bottom:100px}}
@media(max-width:680px){h1{font-size:42px}.hero-grid{grid-template-columns:1fr;padding:24px}.grid-2,.grid-3,.grid-4,.tag-track,.creator-pair,.board-grid,.index-list{grid-template-columns:1fr}.numbered{grid-template-columns:1fr}.number-menu{display:grid;grid-template-columns:1fr 1fr}.folder{grid-template-columns:58px 1fr}.folder>.btn{grid-column:1/-1}.rank-item{grid-template-columns:66px 1fr}.rank-num{font-size:38px}.footer-grid{grid-template-columns:1fr 1fr}.drawer-links{grid-template-columns:1fr}.search-layer{inset:0;width:100%;transform:none;background:var(--bg);padding:78px 16px 20px}.search-layer.is-open{transform:none}.search-card{min-height:100%;border-radius:24px}.media-slot{min-height:220px}}