:root{
  --bg:#EEF5FB;--bg-deep:#E3EEF7;--card:#FFFFFF;--soft:#D7E8F4;
  --ink:#10263A;--text:#243848;--muted:#5A7388;--assist:#7E93A6;
  --brand:#3B9FE0;--bright:#62B7EE;--steel:#1E6FB8;--ice:#A9D6F2;--mint:#2FA8A0;
  --line:rgba(30,111,184,.16);--line-strong:rgba(59,159,224,.38);
  --shadow:0 16px 40px rgba(16,38,58,.08);--radius:14px;--max:1220px;
  --head-h:136px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
body.ui-locked{overflow:hidden}
a{color:var(--steel);text-decoration:none}
a:hover{color:var(--brand)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(59,159,224,.34);outline-offset:3px}
button,input{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
.skip-link{position:fixed;left:16px;top:-60px;z-index:999;background:#fff;color:var(--ink);padding:10px 14px;border-radius:10px;box-shadow:var(--shadow)}
.skip-link:focus{top:10px}
.site-head{position:fixed;z-index:80;top:0;left:0;right:0;box-shadow:0 8px 24px rgba(16,38,58,.04)}
.window-strip{height:22px;background:var(--steel);color:#fff;font-size:12px;line-height:22px}
.bar-inner{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.window-strip .bar-inner{display:flex;align-items:center;justify-content:space-between;height:22px}
.window-brand{font-weight:700;letter-spacing:.05em;white-space:nowrap}
.icon-button{height:22px;min-width:54px;border:0;background:transparent;color:#fff;padding:0 6px;font-size:12px}
.viewport-bar{height:70px;background:#fff;border-bottom:1px solid var(--line)}
.viewport-inner{height:70px;display:grid;grid-template-columns:minmax(140px,1fr) auto minmax(140px,1fr);align-items:center;gap:16px}
.brand-lockup{justify-self:start;display:flex;align-items:center;min-height:44px;color:var(--ink)}
.brand-logo{height:34px;width:auto;max-width:210px;object-fit:contain}
.brand-fallback{font-size:22px;font-weight:800;letter-spacing:.04em;color:var(--ink)}
.toolbox-open{justify-self:center;min-height:44px;min-width:112px;border:1px solid var(--line-strong);background:var(--bg);color:var(--steel);border-radius:12px;font-weight:700;padding:0 18px}
.toolbox-open:hover{background:var(--soft)}
.app-link{justify-self:end;display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:12px;background:linear-gradient(135deg,var(--bright) 0%,var(--brand) 48%,var(--steel) 100%);color:#fff;font-weight:700}
.app-link:hover{color:#fff;filter:brightness(.98)}
.tab-rail{height:44px;background:#DFF0FA;border-bottom:1px solid var(--line-strong)}
.tab-inner{height:44px;display:flex;align-items:center;gap:8px;overflow:hidden}
.tab-inner a{display:inline-flex;align-items:center;justify-content:center;height:30px;padding:0 12px;border-radius:8px;color:var(--ink);font-size:14px;white-space:nowrap}
.tab-inner a:hover{background:rgba(255,255,255,.65)}
.tab-inner a.is-current{background:var(--brand);color:#fff;font-weight:700}
.site-main{padding-top:calc(var(--head-h) + 28px);min-height:65vh}
.page-wrap{width:min(var(--max),calc(100% - 32px));margin:0 auto 64px}
.page-hero,.section-card,.panel,.article-card,.faq-item,.notice-box,.timeline-item,.shelf-row,.index-card{background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:var(--radius)}
.page-hero{padding:28px;margin-bottom:24px;overflow:hidden}
.page-hero.compact{padding:24px 28px}
.eyebrow{display:inline-block;color:var(--steel);font-size:13px;font-weight:800;letter-spacing:.08em;margin-bottom:6px}
h1,h2,h3{color:var(--ink);line-height:1.3;margin-top:0}
h1{font-size:clamp(28px,3.2vw,32px);margin-bottom:14px}
h2{font-size:clamp(21px,2.3vw,26px);margin-bottom:12px}
h3{font-size:18px;margin-bottom:8px}
p{margin:0 0 14px}
.lead{font-size:17px;color:var(--text);max-width:850px}
.meta-note{font-size:14px;color:var(--muted)}
.hero-actions,.inline-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:11px;font-weight:750;border:1px solid var(--line-strong)}
.btn-primary{background:linear-gradient(135deg,var(--bright) 0%,var(--brand) 48%,var(--steel) 100%);color:#fff;border-color:transparent}
.btn-primary:hover{color:#fff;filter:brightness(.98)}
.btn-secondary{background:#fff;color:var(--steel)}
.btn-secondary:hover{background:var(--bg)}
.media-slot{width:100%;min-height:180px;display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,#F8FCFF,#E9F4FB);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.media-slot img{width:100%;height:100%;max-height:240px;object-fit:contain;object-position:center}
.media-slot.hero-media{max-height:300px;aspect-ratio:16/9;margin-bottom:22px}
.media-slot.hero-media img{max-height:300px}
.media-slot.medium-media{height:220px}
.media-slot.medium-media img{height:220px}
.media-slot.small-media{height:190px}
.media-slot.small-media img{height:190px}
.media-slot.app-media{min-height:300px;max-height:420px}
.media-slot.app-media img{max-height:420px;width:auto}
.media-placeholder{color:var(--steel);background:linear-gradient(135deg,#F7FCFF,#DDEFF9);position:relative}
.media-placeholder:before{content:"";position:absolute;inset:14px;border:1px dashed rgba(30,111,184,.28);border-radius:10px}
.media-placeholder span{position:relative;z-index:1;font-weight:800;letter-spacing:.04em;padding:18px;text-align:center}
.section-card{padding:26px;margin-bottom:22px}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:18px;margin-bottom:18px}
.section-head p{color:var(--muted);max-width:680px;margin:0}
.grid-2,.grid-3,.grid-4,.grid-6{display:grid;gap:16px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid-6{grid-template-columns:repeat(3,minmax(0,1fr))}
.panel,.article-card,.index-card{padding:20px;box-shadow:none}
.panel p:last-child,.article-card p:last-child,.index-card p:last-child{margin-bottom:0}
.panel a.more,.article-card a.more,.index-card a.more{display:inline-flex;min-height:44px;align-items:center;font-weight:750}
.tag-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.tag-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;min-height:130px;position:relative;overflow:hidden}
.tag-item:before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--bright)}
.tag-item:nth-child(even):before{background:var(--mint)}
.tag-item strong{display:block;color:var(--ink);font-size:17px;margin-bottom:6px}
.tag-item p{font-size:14px;color:var(--muted);margin:0 0 8px}
.tag-item a{font-size:14px;font-weight:700}
.number-list{display:grid;gap:10px;counter-reset:item}
.number-row{display:grid;grid-template-columns:64px 1fr auto;gap:14px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line)}
.number-row:last-child{border-bottom:0}
.big-number{font-size:30px;line-height:1;color:var(--steel);font-weight:900;letter-spacing:-.04em}
.number-row strong{color:var(--ink)}
.number-row span{color:var(--muted);font-size:14px}
.number-row a{min-height:44px;display:flex;align-items:center;font-weight:750}
.theme-tile{min-height:150px;border-radius:13px;padding:20px;background:#EAF5FC;border:1px solid var(--line);display:flex;flex-direction:column;justify-content:space-between}
.theme-tile:nth-child(2n){background:#EAF7F4}
.theme-tile:nth-child(3n){background:#E2EFF8}
.theme-tile h3{margin-bottom:10px}
.theme-tile p{font-size:14px;color:var(--muted)}
.theme-tile a{font-weight:750;min-height:44px;display:flex;align-items:end}
.shelf-list{display:grid;gap:12px}
.shelf-row{padding:18px 20px;display:grid;grid-template-columns:minmax(140px,.8fr) 2fr auto;gap:18px;align-items:center;box-shadow:none}
.shelf-row strong{color:var(--ink)}
.shelf-row p{margin:0;color:var(--muted);font-size:14px}
.shelf-row a{display:flex;align-items:center;min-height:44px;font-weight:750}
.timeline{position:relative;margin-left:8px;padding-left:30px;display:grid;gap:14px}
.timeline:before{content:"";position:absolute;top:8px;bottom:8px;left:8px;width:2px;background:var(--ice)}
.timeline-item{position:relative;padding:18px 20px;box-shadow:none}
.timeline-item:before{content:"";position:absolute;width:14px;height:14px;border-radius:50%;background:var(--brand);left:-30px;top:24px;border:3px solid var(--bg)}
.status{display:inline-flex;align-items:center;min-height:28px;padding:0 10px;border-radius:8px;background:var(--soft);color:var(--steel);font-size:13px;font-weight:800;margin-bottom:8px}
.status.making{background:#DFF3F0;color:#247C76}.status.pending{background:#EDF1F5;color:#5A7388}
.prose{max-width:860px;margin:0 auto}
.prose h2{margin-top:32px}.prose h3{margin-top:24px}.prose p{margin-bottom:16px}
.prose ul{padding-left:22px}.prose li{margin-bottom:9px}
.editor-note{border-left:4px solid var(--mint);background:#F5FBFA;padding:16px 18px;border-radius:0 12px 12px 0;margin:18px 0;color:var(--text)}
.definition-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:18px}
.definition-grid article{background:#F9FCFE;border:1px solid var(--line);border-radius:12px;padding:18px}
.step-list{counter-reset:steps;display:grid;gap:14px}
.step-list article{counter-increment:steps;padding:18px 18px 18px 68px;background:#fff;border:1px solid var(--line);border-radius:12px;position:relative}
.step-list article:before{content:counter(steps,decimal-leading-zero);position:absolute;left:18px;top:19px;font-size:20px;font-weight:900;color:var(--steel)}
.app-layout{display:grid;grid-template-columns:minmax(240px,.8fr) minmax(0,1.4fr);gap:28px;align-items:center}
.app-icon-line{display:flex;gap:14px;align-items:center;margin-bottom:16px}
.app-icon-line img{width:64px;height:64px;object-fit:contain;border-radius:14px}
.app-icon-placeholder{width:64px;height:64px;border-radius:14px;background:var(--soft);display:flex;align-items:center;justify-content:center;color:var(--steel);font-weight:900}
.notice-box{padding:18px 20px;box-shadow:none;background:#F8FCFF;border-color:var(--line-strong)}
.notice-box strong{color:var(--ink)}
.faq-list{display:grid;gap:14px}
.faq-item{padding:20px;box-shadow:none}
.faq-item h2{font-size:18px;margin-bottom:8px}.faq-item p{margin:0;color:var(--text)}
.contact-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.contact-cards article{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}
.contact-cards a{display:inline-flex;min-height:44px;align-items:center;font-weight:750}
.breadcrumb{display:flex;gap:8px;align-items:center;flex-wrap:wrap;color:var(--assist);font-size:13px;margin-bottom:12px}.breadcrumb a{color:var(--muted)}
.site-footer{background:var(--ink);color:#C7D8E6;padding:48px 0 calc(36px + env(safe-area-inset-bottom));margin-top:0}
.footer-inner{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.footer-brand{display:flex;align-items:center;gap:14px;margin-bottom:28px}.footer-logo{height:32px;max-width:190px;object-fit:contain}.footer-brand strong{display:block;color:#fff;font-size:18px}.footer-brand span{font-size:12px;letter-spacing:.08em}
.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;padding-bottom:28px;border-bottom:1px solid rgba(199,216,230,.18)}
.footer-grid h2{color:#fff;font-size:15px;margin-bottom:10px}.footer-grid a{display:block;color:#C7D8E6;padding:5px 0;font-size:14px}.footer-grid a:hover{color:#fff}
.footer-note{max-width:840px;margin:24px 0 10px;color:#C7D8E6}.copyright{margin:0;color:#8EA9BC;font-size:13px}
.ui-overlay{position:fixed;inset:0;z-index:89;background:rgba(16,38,58,.42);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s ease}
.ui-overlay.is-active{opacity:1;visibility:visible;pointer-events:auto}
.toolbox{position:fixed;z-index:92;top:0;right:0;height:100dvh;width:min(420px,86vw);background:#F8FCFF;border-left:1px solid var(--line-strong);box-shadow:-20px 0 60px rgba(16,38,58,.15);transform:translateX(100%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s ease;display:flex;flex-direction:column}
.toolbox.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}
.toolbox-head{height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--line);background:#fff}
.toolbox-brand{display:flex;align-items:center;gap:10px}.toolbox-brand img{height:30px;max-width:150px;object-fit:contain}.toolbox-brand strong{display:block;color:var(--ink)}.toolbox-brand span{display:block;color:var(--muted);font-size:11px}
.panel-close{min-width:64px;min-height:44px;border:1px solid var(--line-strong);background:#fff;color:var(--steel);border-radius:10px;font-weight:700}
.toolbox-scroll{overflow-y:auto;padding:18px;overscroll-behavior:contain}.tool-group{margin-bottom:24px}.tool-group h2{font-size:15px;margin-bottom:10px}.tool-list{display:grid;gap:8px}.tool-list a{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:13px 14px;color:var(--ink)}.tool-list a strong{display:block;margin-bottom:2px}.tool-list a span{display:block;color:var(--muted);font-size:13px;line-height:1.55}.tool-list a:hover{border-color:var(--line-strong);background:#F4FAFE}
.search-layer{position:fixed;z-index:91;top:92px;left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-8px);transition:opacity .2s ease,transform .2s ease,visibility .2s ease}.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1;transform:translateY(0)}
.search-card{width:min(820px,calc(100% - 32px));margin:14px auto;background:#fff;border:1px solid var(--line-strong);border-radius:16px;box-shadow:0 26px 70px rgba(16,38,58,.16);padding:22px}
.search-head{display:flex;justify-content:space-between;align-items:flex-start;gap:18px}.search-head h2{margin-bottom:14px}
.search-box{display:block}.search-box span{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}.search-box input{width:100%;height:50px;border:1px solid var(--line-strong);border-radius:11px;padding:0 14px;color:var(--ink);background:#F8FCFF}
.search-presets{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:14px}.search-presets a{display:block;min-height:74px;padding:12px 14px;border-radius:11px;background:var(--bg);border:1px solid var(--line);font-weight:800;color:var(--ink)}.search-presets a span{display:block;color:var(--muted);font-size:12px;font-weight:500;margin-top:2px}.search-presets a[hidden]{display:none}
.mobile-nav{display:none}
.home-cover{padding:0;overflow:hidden}.home-cover .cover-copy{padding:24px 28px 28px}.home-cover .media-slot{border:0;border-radius:0;border-bottom:1px solid var(--line)}
.home-cover .cover-kicker{font-size:14px;color:var(--steel);font-weight:800;margin-bottom:5px}.home-cover .cover-title{font-size:clamp(27px,3.4vw,32px);margin-bottom:12px;color:var(--ink)}
.home-cover .cover-copy p{max-width:870px}
.content-index{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.content-index a{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px;min-height:96px;color:var(--ink)}.content-index strong{display:block;margin-bottom:4px}.content-index span{display:block;color:var(--muted);font-size:14px}
.quote-band{padding:20px;border-radius:13px;background:var(--steel);color:#fff;margin:18px 0}.quote-band strong{display:block;font-size:18px;margin-bottom:6px}.quote-band p{margin:0;color:#E6F3FC}
.table-like{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}.table-row{display:grid;grid-template-columns:180px 1fr;background:#fff}.table-row strong,.table-row span{padding:14px 16px}.table-row strong{color:var(--ink);background:#F5FAFD}.table-row span{color:var(--text)}
@media (max-width:900px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3,.grid-6{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.app-layout{grid-template-columns:1fr}.app-layout .app-media{max-width:420px;margin:0 auto;width:100%}
  .shelf-row{grid-template-columns:1fr auto}.shelf-row p{grid-column:1/-1}.number-row{grid-template-columns:56px 1fr}.number-row a{grid-column:2}
}
@media (max-width:720px){
  :root{--head-h:92px}.tab-rail{display:none}.site-main{padding-top:calc(var(--head-h) + 20px);padding-bottom:62px}.bar-inner,.page-wrap,.footer-inner{width:min(100% - 32px,var(--max))}
  .viewport-inner{grid-template-columns:minmax(0,1fr) auto auto;gap:8px}.brand-logo{height:30px;max-width:130px}.brand-fallback{font-size:18px}.toolbox-open{min-width:72px;padding:0 10px}.app-link{padding:0 12px;white-space:nowrap;font-size:14px}
  .window-brand{max-width:70vw;overflow:hidden;text-overflow:ellipsis}.page-hero,.section-card{padding:20px}.home-cover .cover-copy{padding:20px}
  .grid-2,.grid-3,.grid-4,.grid-6,.tag-grid,.definition-grid,.contact-cards,.content-index{grid-template-columns:1fr}.section-head{align-items:flex-start;flex-direction:column}.tag-item{min-height:auto}.theme-tile{min-height:130px}
  .media-slot.hero-media{aspect-ratio:3/2}.media-slot.medium-media{height:200px}.media-slot.small-media{height:180px}.shelf-row{grid-template-columns:1fr}.shelf-row p,.shelf-row a{grid-column:auto}.number-row{grid-template-columns:48px 1fr;gap:10px}.big-number{font-size:26px}
  .search-layer{top:0;bottom:0;background:#DFF0FA;overflow-y:auto}.search-card{width:100%;min-height:100dvh;margin:0;border:0;border-radius:0;padding:calc(20px + env(safe-area-inset-top)) 16px calc(76px + env(safe-area-inset-bottom));box-shadow:none;background:#DFF0FA}.search-presets{grid-template-columns:1fr}.search-presets a{background:#fff}
  .mobile-nav{position:fixed;z-index:78;left:0;right:0;bottom:0;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:#fff;border-top:1px solid var(--line-strong);box-shadow:0 -8px 24px rgba(16,38,58,.08)}.mobile-nav a{display:flex;align-items:center;justify-content:center;min-height:50px;color:var(--muted);font-size:13px}.mobile-nav a.is-current{background:var(--brand);color:#fff;font-weight:800}.site-footer{padding-bottom:calc(74px + env(safe-area-inset-bottom))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:18px}.table-row{grid-template-columns:1fr}.table-row strong{padding-bottom:6px}.table-row span{padding-top:6px}
}
@media (max-width:420px){
  .brand-lockup{min-width:0}.brand-logo{max-width:104px;height:28px}.brand-fallback{font-size:16px}.toolbox-open{min-width:66px;font-size:14px}.app-link{padding:0 9px;font-size:13px}.page-wrap{width:calc(100% - 32px)}
  .footer-grid{grid-template-columns:1fr}.hero-actions .btn{width:100%}.toolbox{width:86vw}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

.craft-row{margin-bottom:12px}.craft-row:last-child{margin-bottom:0}.contact-notice{margin-top:18px}