:root{
--bg:#F3F6F9;--surface:#FFFFFF;--soft:#E8EEF5;--title:#0B1220;--text:#1E293B;
--muted:#475569;--faint:#64748B;--blue:#2563EB;--blue2:#60A5FA;--deep:#1D4ED8;
--lime:#65A30D;--slate:#334155;--line:rgba(37,99,235,.16);
--shadow:0 14px 36px rgba(11,18,32,.08);--max:1180px;
}
*{box-sizing:border-box}
html{background:var(--bg);scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.78;overflow-x:hidden}
body.panel-open{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{color:var(--title);line-height:1.2;letter-spacing:-.02em}
h1{font-size:clamp(28px,3.4vw,32px);margin:8px 0 18px}
h2{font-size:clamp(23px,2.6vw,30px);margin:0 0 14px}
h3{font-size:18px;margin:0 0 9px}
p{margin:0 0 16px}
.skip-link{position:fixed;left:16px;top:-70px;z-index:500;background:var(--title);color:#fff;padding:10px 14px;border-radius:8px}
.skip-link:focus{top:8px}
.container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.page-main{padding-top:136px;min-height:62vh}
.section{padding:58px 0}
.section.soft{background:var(--soft)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-size:12px;font-weight:900;letter-spacing:.09em;text-transform:uppercase}
.eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--lime)}
.hero-lead{max-width:760px;color:var(--muted);font-size:17px}
.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:10px 18px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--blue);font-weight:850}
.btn.primary{background:linear-gradient(135deg,#60A5FA 0%,#2563EB 52%,#1D4ED8 100%);color:#fff;border-color:transparent}
.btn:hover,.btn:focus-visible,.card-link:hover,.card-link:focus-visible{outline:3px solid rgba(37,99,235,.18);outline-offset:2px}
.statusbar{height:32px;background:var(--slate);color:#fff}
.top-inner,.command-inner,.tab-inner{width:min(var(--max),calc(100% - 32px));height:100%;margin:0 auto;display:flex;align-items:center}
.top-inner{justify-content:space-between}
.status-brand{font-size:12px;font-weight:900;letter-spacing:.08em;color:#fff}
.status-search{height:32px;min-width:54px;border:0;background:transparent;color:#fff;cursor:pointer;font-weight:800}
.status-search:hover,.status-search:focus-visible{background:rgba(255,255,255,.12);outline:none}
.commandbar{height:60px;background:#fff;border-bottom:1px solid rgba(11,18,32,.06)}
.command-inner{display:grid;grid-template-columns:1fr auto 1fr;gap:12px}
.square-control{min-width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--title);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:6px;font-weight:850}
.command-inner>.square-control{justify-self:start}
.control-text{font-size:13px}
.command-brand{justify-self:center;display:flex;align-items:center;justify-content:center;height:44px;min-width:90px;font-weight:950;color:var(--title)}
.command-brand img{max-height:32px;max-width:150px}
.command-app{justify-self:end;min-height:44px;display:flex;align-items:center;padding:8px 15px;border-radius:999px;background:linear-gradient(135deg,#60A5FA,#2563EB 58%,#1D4ED8);color:#fff;font-weight:850}
.tabbar{height:44px;background:#fff;border-bottom:1px solid var(--line)}
.tab-inner{gap:28px;overflow:hidden}
.tab-inner a{height:44px;display:flex;align-items:center;position:relative;color:var(--muted);font-size:14px;font-weight:800;white-space:nowrap}
.tab-inner a:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:transparent}
.tab-inner a.is-active{color:var(--blue)}
.tab-inner a.is-active:after{background:var(--blue)}
.tab-inner a:hover,.tab-inner a:focus-visible{color:var(--blue);outline:none}
.site-topbar{position:fixed;z-index:90;inset:0 0 auto;background:#fff;box-shadow:0 6px 22px rgba(11,18,32,.06)}
.page-hero{padding:48px 0 26px}
.page-hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:28px;align-items:center}
.index-dock{padding:42px 0 20px}
.dock-grid{display:block}
.cover-stack{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow)}
.cover-copy{max-width:820px}
.cover-stack .media-slot{margin-top:28px;max-height:340px}
.media-slot{width:100%;min-height:230px;aspect-ratio:16/10;border-radius:18px;overflow:hidden;background:linear-gradient(135deg,#E8EEF5,#FFFFFF);border:1px solid var(--line);display:flex;align-items:center;justify-content:center}
.media-slot img{width:100%;height:100%;object-fit:contain}
.media-placeholder{width:100%;height:100%;min-height:inherit;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#E8EEF5,#F8FAFC);color:rgba(37,99,235,.35);font-weight:950;letter-spacing:.13em}
.cover-media{max-height:340px;aspect-ratio:16/7}
.badge-media{width:86px;min-height:0;aspect-ratio:1/1;margin:18px 0}
.badge-media .media-placeholder{min-height:84px}
.section-head{display:grid;grid-template-columns:1fr minmax(250px,420px);gap:30px;align-items:end;margin-bottom:26px}
.section-head p{color:var(--muted)}
.topic-track{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.topic-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;min-height:178px;position:relative}
.topic-item:before{content:"";position:absolute;width:8px;height:8px;border-radius:50%;background:var(--blue);top:19px;right:19px}
.topic-item p{font-size:14px;color:var(--muted)}
.topic-item a,.card-link{display:inline-flex;min-height:44px;align-items:center;color:var(--blue);font-weight:850}
.pulse-layout{display:grid;grid-template-columns:1fr;gap:20px}
.number-menu{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.number-menu a{min-height:66px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 14px;display:flex;align-items:center;gap:9px;font-weight:850}
.number-menu strong{font-size:22px;color:var(--blue)}
.pulse-main{display:grid;grid-template-columns:.9fr 1.1fr;gap:22px;align-items:stretch}
.pulse-entry{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}
.pulse-entry header{display:flex;gap:14px;align-items:center;margin-bottom:10px}
.pulse-entry .num{font-size:40px;font-weight:950;color:var(--blue)}
.mosaic{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.mosaic-card,.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:0 10px 26px rgba(11,18,32,.04)}
.mosaic-card .media-slot,.card .media-slot{margin-bottom:18px}
.duo{display:grid;grid-template-columns:1fr;gap:18px}
.card.accent-purple,.card.accent-teal,.card.accent-coral{border-top:4px solid var(--blue)}
.board-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:18px}
.board-tile{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;min-height:150px}
.board-tile:nth-child(2n){background:#F8FAFC}
.folder-list{display:grid;gap:10px}
.folder-row{display:grid;grid-template-columns:44px 1fr auto;gap:16px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px}
.folder-tab{width:34px;height:28px;border-radius:6px;background:var(--soft);position:relative}
.folder-tab:before{content:"";position:absolute;left:3px;top:-6px;width:17px;height:8px;border-radius:4px 4px 0 0;background:var(--blue2)}
.folder-row p{margin:0;color:var(--muted)}
.folder-row>a{min-height:44px;display:flex;align-items:center;color:var(--blue);font-weight:850}
.rank-list{display:grid;gap:8px}
.rank-row{display:grid;grid-template-columns:92px 1fr;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:15px 20px}
.rank-num{font-size:58px;line-height:1;color:var(--blue);font-weight:950;letter-spacing:-.07em}
.timeline{position:relative;display:grid;gap:18px}
.timeline:before{content:"";position:absolute;left:22px;top:8px;bottom:8px;width:2px;background:rgba(37,99,235,.18)}
.timeline-item{position:relative;padding-left:66px}
.timeline-dot{position:absolute;left:14px;top:23px;width:18px;height:18px;border-radius:50%;background:#fff;border:5px solid var(--blue)}
.timeline-item article{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}
.status{display:inline-flex;min-height:30px;align-items:center;padding:4px 10px;border-radius:999px;background:#DBEAFE;color:#1D4ED8;font-size:12px;font-weight:900}
.status.making{background:#E8EEF5;color:var(--slate)}
.status.pending{background:#ECFCCB;color:#3F6212}
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.step,.feature,.legal-item,.faq-item,.index-link{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}
.step-no{display:inline-flex;width:38px;height:38px;border-radius:10px;align-items:center;justify-content:center;background:var(--blue);color:#fff;font-weight:900;margin-bottom:13px}
.quote-note{border-left:4px solid var(--blue);background:#fff;border-radius:0 16px 16px 0;padding:20px 24px}
.index-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.index-link{min-height:150px}
.index-link a{display:inline-flex;min-height:44px;align-items:center;color:var(--blue);font-weight:850}
.app-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:30px;align-items:center}
.feature-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.legal-list{counter-reset:legal;display:grid;gap:14px}
.legal-item{counter-increment:legal}
.legal-item h2:before{content:counter(legal,decimal-leading-zero) " · ";color:var(--blue)}
.prose{display:grid;gap:18px}
.prose article{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}
.prose article p{color:var(--text)}
.faq-list{display:grid;gap:12px}
.faq-item h2{font-size:20px}
.site-footer{margin-top:54px;background:#0B1220;color:#D6E4FF}
.footer-inner{width:min(var(--max),calc(100% - 32px));margin:0 auto;padding:48px 0 100px}
.footer-brandline{display:flex;align-items:center;gap:14px;margin-bottom:30px}
.footer-brand{width:56px;height:56px;border-radius:14px;background:#fff;display:flex;align-items:center;justify-content:center;padding:7px;color:var(--title);font-weight:950}
.footer-brand img{max-height:36px}
.footer-brandline strong{display:block;color:#fff;font-size:22px}
.footer-brandline span{display:block;color:#AFC7F5}
.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.footer-grid nav{display:grid;align-content:start;gap:7px}
.footer-grid h2{color:#fff;font-size:14px;margin-bottom:6px}
.footer-grid a{min-height:34px;display:flex;align-items:center;color:#C5D7F5}
.footer-grid a:hover,.footer-grid a:focus-visible{color:#fff;text-decoration:underline;outline:none}
.footer-note{max-width:850px;margin:30px 0 8px;color:#B5C8E8}
.footer-copy{margin:0;color:#8EA6CC}
.screen-overlay{position:fixed;inset:0;z-index:105;background:rgba(11,18,32,.42);opacity:0;visibility:hidden;pointer-events:none;transition:.18s ease}
.screen-overlay.is-visible{opacity:1;visibility:visible;pointer-events:auto}
.site-drawer{position:fixed;z-index:120;inset:0;background:var(--bg);transform:translateY(-100%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s}
.site-drawer.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}
.drawer-shell{height:100%;display:flex;flex-direction:column}
.drawer-head{height:92px;flex:0 0 auto;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(16px,calc((100% - var(--max))/2))}
.drawer-brand{display:flex;align-items:center;gap:12px;color:var(--title)}
.drawer-brand img{max-height:32px;max-width:140px}
.drawer-scroll{flex:1;overflow:auto;padding:28px max(16px,calc((100% - var(--max))/2)) 70px}
.drawer-group{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:28px}
.drawer-group h2{grid-column:1/-1;font-size:15px;color:var(--muted);padding-bottom:6px;border-bottom:1px solid var(--line)}
.drawer-group a{min-height:104px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px}
.drawer-group a:hover,.drawer-group a:focus-visible{border-color:var(--blue);outline:3px solid rgba(37,99,235,.12);outline-offset:1px}
.drawer-group strong{display:block;color:var(--title);margin-bottom:5px}
.drawer-group span{display:block;color:var(--muted);font-size:13px;line-height:1.55}
.close-control{font-size:24px}
.search-layer{position:fixed;z-index:125;top:92px;left:50%;width:min(760px,calc(100% - 32px));transform:translate(-50%,-12px);opacity:0;visibility:hidden;pointer-events:none;transition:.18s ease}
.search-layer.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
.search-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow)}
.search-head{display:flex;justify-content:space-between;gap:14px}
.search-head h2{font-size:26px;margin-top:5px}
.search-field{display:block;margin-top:16px}
.search-field input{width:100%;height:52px;border:1px solid var(--line);border-radius:999px;background:var(--bg);color:var(--text);padding:0 18px;outline:none}
.search-field input:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.preset-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.preset-links a{min-height:44px;display:flex;align-items:center;padding:8px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--blue);font-weight:850}
.preset-links a:hover,.preset-links a:focus-visible{border-color:var(--blue);outline:none}
.search-note{font-size:13px;color:var(--muted);margin:13px 0 0}
.mobile-island{display:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:900px){
  .page-hero-grid,.pulse-main,.app-layout{grid-template-columns:1fr}
  .topic-track,.board-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .mosaic{grid-template-columns:1fr}
  .section-head{grid-template-columns:1fr}
  .card-grid,.steps,.feature-list{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:720px){
  body{padding-bottom:68px}
  .page-main{padding-top:92px}
  .tabbar{display:none}
  .top-inner,.command-inner{width:calc(100% - 32px)}
  .control-text{display:none}
  .command-inner{grid-template-columns:44px minmax(0,1fr) auto}
  .command-brand{min-width:0;max-width:100%;overflow:hidden}
  .command-brand img{max-width:min(130px,100%);max-height:30px}
  .command-app{font-size:13px;padding:8px 12px}
  .section{padding:42px 0}
  .page-hero{padding:32px 0 18px}
  .index-dock{padding-top:28px}
  .cover-stack{padding:20px}
  .media-slot{min-height:220px}
  .cover-media{min-height:180px}
  .number-menu{grid-template-columns:repeat(2,1fr)}
  .topic-track,.board-grid,.card-grid,.steps,.feature-list,.index-list{grid-template-columns:1fr}
  .folder-row{grid-template-columns:38px 1fr}
  .folder-row>a{grid-column:2}
  .rank-row{grid-template-columns:70px 1fr}
  .rank-num{font-size:46px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:22px 12px}
  .footer-inner{padding-bottom:94px}
  .drawer-head{height:92px;padding:0 16px}
  .drawer-scroll{padding:20px 16px 90px}
  .drawer-group{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin-bottom:22px}
  .drawer-group a{min-height:112px;padding:14px}
  .search-layer{top:0;left:0;width:100%;height:100dvh;transform:none!important;background:var(--bg)}
  .search-card{height:100dvh;overflow:auto;border:0;border-radius:0;box-shadow:none;background:var(--bg);padding:22px 16px 94px}
  .mobile-island{position:fixed;z-index:80;left:16px;right:16px;bottom:calc(8px + env(safe-area-inset-bottom));height:50px;display:grid;grid-template-columns:repeat(5,1fr);background:rgba(255,255,255,.97);border:1px solid var(--line);border-radius:16px;box-shadow:0 12px 30px rgba(11,18,32,.12);padding:3px}
  .mobile-island a{height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:12px;font-weight:850}
  .mobile-island a.is-current{background:var(--blue);color:#fff}
  .mobile-island a:focus-visible{outline:2px solid var(--blue);outline-offset:1px}
}
@media(max-width:430px){
  .footer-grid{grid-template-columns:1fr}
  .number-menu{grid-template-columns:1fr}
  .drawer-group{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*:before,*:after{animation:none!important;transition:none!important}
}