*{box-sizing:border-box}
:root{
  --bg:#F3F7FB;--bg-deep:#E6EFF7;--surface:#FFFFFF;--surface-2:#DCEBF5;
  --ink:#10263A;--text:#263B4C;--muted:#60788C;--soft:#8094A5;
  --blue:#3B9FE0;--bright:#67B9EC;--steel:#1E6FB8;--ice:#B8DDF3;--mint:#39A69C;
  --border:rgba(30,111,184,.16);--border-strong:rgba(59,159,224,.38);
  --shadow:0 14px 36px rgba(16,38,58,.08);--radius:14px;
}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.82;overflow-x:hidden}
body.modal-open{overflow:hidden}
img{max-width:100%;height:auto}
a{color:var(--steel);text-decoration:none}
a:hover{text-decoration:underline}
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}
.skip-link{position:fixed;left:16px;top:-60px;background:var(--steel);color:#fff;padding:10px 14px;border-radius:10px;z-index:1000}
.skip-link:focus{top:12px}
.topbar{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);box-shadow:0 8px 24px rgba(16,38,58,.05)}
.topbar-inner{max-width:1240px;height:72px;margin:0 auto;padding:0 22px;display:flex;align-items:center;gap:14px}
.brand-link{display:inline-flex;align-items:center;min-height:44px;color:var(--ink);font-weight:800;text-decoration:none}
.brand-logo{display:flex;align-items:center}
.brand-logo-image{display:block;height:34px;width:auto;max-width:180px;object-fit:contain}
.brand-logo .media-placeholder{height:34px;min-width:116px;padding:0 10px;border-radius:8px;background:var(--surface-2);display:flex;align-items:center;justify-content:center;color:var(--ink);font-weight:800}
.brand-fallback{display:none}
.brand-status{color:var(--muted);font-size:14px}
.top-actions{margin-left:auto;display:flex;align-items:center;gap:8px}
.icon-button,.menu-button,.app-link{min-height:44px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--ink);padding:0 14px;display:inline-flex;align-items:center;justify-content:center;gap:7px;text-decoration:none}
.app-link{background:linear-gradient(135deg,var(--bright),var(--blue) 52%,var(--steel));color:#fff;border:0;font-weight:700}
.menu-lines{display:grid;gap:3px}
.menu-lines i{display:block;width:16px;height:2px;background:currentColor;border-radius:2px}
.site-main{padding:26px 0 70px}
.layout-shell{max-width:1240px;margin:0 auto;padding:0 22px;display:grid;grid-template-columns:220px minmax(0,1fr);gap:28px;align-items:start}
.desktop-rail{position:sticky;top:96px;display:grid;gap:14px}
.rail-section{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px;box-shadow:0 8px 24px rgba(16,38,58,.04)}
.rail-section h2{margin:0;color:var(--ink);font-size:15px}
.rail-section p{margin:4px 0 10px;color:var(--soft);font-size:12px;line-height:1.55}
.rail-section nav{display:grid;gap:3px}
.rail-section a{min-height:38px;padding:7px 9px;border-left:3px solid transparent;color:var(--text);border-radius:7px;display:flex;align-items:center}
.rail-section a.is-current{border-left-color:var(--steel);background:rgba(184,221,243,.52);color:var(--ink);font-weight:800}
.rail-all{min-height:44px;border:1px solid var(--border-strong);background:var(--surface);border-radius:10px;color:var(--steel);font-weight:700}
.content-column{min-width:0}
.page-hero,.editorial-hero{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:28px;box-shadow:var(--shadow);margin-bottom:22px}
.eyebrow{display:inline-block;margin-bottom:8px;color:var(--steel);font-weight:800;font-size:13px;letter-spacing:.04em}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:7px;color:var(--soft);font-size:13px;margin-bottom:14px}
.breadcrumbs a{color:var(--muted)}
h1,h2,h3{color:var(--ink);line-height:1.28}
h1{font-size:clamp(30px,4vw,38px);margin:0 0 14px}
h2{font-size:clamp(22px,3vw,28px);margin:0 0 12px}
h3{font-size:19px;margin:0 0 8px}
p{margin:0 0 14px}
.lead{font-size:18px;color:#355166;max-width:760px}
.hero-actions,.section-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.button-primary,.button-secondary{min-height:44px;padding:10px 16px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-weight:800;text-decoration:none}
.button-primary{background:linear-gradient(135deg,var(--bright),var(--blue) 52%,var(--steel));color:#fff}
.button-secondary{background:#fff;color:var(--steel);border:1px solid var(--border-strong)}
.content-section{margin:22px 0;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:24px}
.section-kicker{font-size:12px;font-weight:800;letter-spacing:.08em;color:var(--mint);text-transform:uppercase}
.section-intro{color:var(--muted);max-width:800px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.card{background:linear-gradient(180deg,#fff,#f9fcfe);border:1px solid var(--border);border-radius:14px;padding:19px;min-width:0}
.card.soft{background:var(--surface-2)}
.card.mint{background:rgba(57,166,156,.10)}
.card .number{font-size:30px;line-height:1;color:var(--steel);font-weight:900;margin-bottom:14px}
.card p:last-child{margin-bottom:0}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.tag{padding:5px 9px;border:1px solid var(--border);border-radius:8px;color:var(--muted);background:#fff;font-size:13px}
.media-frame{width:100%;border-radius:14px;overflow:hidden;border:1px solid var(--border);background:linear-gradient(135deg,#eef7fc,#dcebf5);display:flex;align-items:center;justify-content:center;padding:12px}
.media-frame.wide{aspect-ratio:16/9;max-height:360px}
.media-frame.standard{aspect-ratio:3/2;max-height:300px}
.media-frame.portrait{aspect-ratio:4/5;max-height:460px}
.media-frame.square{aspect-ratio:1/1;max-width:96px}
.media-image{display:block;width:100%;height:100%;object-fit:contain;object-position:center}
.media-placeholder{display:flex;align-items:center;justify-content:center;width:100%;height:100%;min-height:150px;color:var(--steel);font-weight:800;background:linear-gradient(135deg,#eff8fd,#dbeaf4)}
.media-placeholder span{padding:12px 16px;text-align:center}
.split{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(280px,.92fr);gap:24px;align-items:center}
.split.reverse{grid-template-columns:minmax(280px,.92fr) minmax(0,1.08fr)}
.split.reverse .split-media{order:2}
.feature-band{display:grid;grid-template-columns:42% 1fr;gap:24px;align-items:center;padding:22px 0;border-bottom:1px solid var(--border)}
.feature-band:last-child{border-bottom:0}
.feature-band:nth-child(even){grid-template-columns:1fr 42%}
.feature-band:nth-child(even) .feature-media{order:2}
.feature-band:nth-child(even) .feature-copy{order:1}
.task-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.task-card{position:relative;overflow:hidden;border:1px solid var(--border);border-radius:14px;padding:18px;background:#fff}
.task-card strong{display:block;color:var(--ink);font-size:17px;margin-bottom:6px}
.task-card .task-no{position:absolute;right:12px;top:6px;font-size:42px;font-weight:900;color:rgba(30,111,184,.09)}
.mosaic{display:grid;grid-template-columns:repeat(12,1fr);gap:14px}
.mosaic .topic{min-height:150px;padding:20px;border-radius:15px;border:1px solid var(--border);background:var(--surface-2)}
.mosaic .topic:nth-child(1),.mosaic .topic:nth-child(4){grid-column:span 7}
.mosaic .topic:nth-child(2),.mosaic .topic:nth-child(3){grid-column:span 5}
.mosaic .topic:nth-child(5){grid-column:span 4}
.mosaic .topic:nth-child(6){grid-column:span 8}
.mosaic .topic:nth-child(2n){background:rgba(57,166,156,.10)}
.shelf-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
.shelf-box{border:1px solid var(--border);border-radius:14px;padding:20px;background:#fff}
.shelf-row{display:grid;grid-template-columns:110px 1fr;gap:14px;padding:13px 0;border-bottom:1px solid var(--border)}
.shelf-row:last-child{border-bottom:0}
.rank-list{display:grid;gap:12px}
.rank-item{display:grid;grid-template-columns:54px 1fr;gap:12px;align-items:start;padding:14px;border-radius:12px;background:var(--surface-2)}
.rank-item b{font-size:28px;color:var(--steel);line-height:1}
.timeline{position:relative;display:grid;gap:0;margin-left:9px}
.timeline::before{content:"";position:absolute;left:8px;top:14px;bottom:14px;width:2px;background:var(--ice)}
.timeline-item{position:relative;padding:0 0 22px 38px}
.timeline-item::before{content:"";position:absolute;left:2px;top:7px;width:14px;height:14px;border-radius:50%;background:var(--steel);box-shadow:0 0 0 5px var(--bg-deep)}
.process{display:grid;gap:12px}
.process-step{display:grid;grid-template-columns:56px 1fr;gap:16px;padding:18px;border-radius:14px;background:#fff;border:1px solid var(--border)}
.process-step .step-num{width:44px;height:44px;border-radius:12px;background:var(--surface-2);color:var(--steel);display:flex;align-items:center;justify-content:center;font-weight:900}
.note-callout{border-left:4px solid var(--mint);padding:16px 18px;background:rgba(57,166,156,.08);border-radius:0 12px 12px 0}
.checklist{display:grid;gap:10px}
.check-item{display:grid;grid-template-columns:28px 1fr;gap:12px;padding:14px;border:1px solid var(--border);border-radius:12px;background:#fff}
.check-mark{width:24px;height:24px;border-radius:8px;background:var(--surface-2);display:flex;align-items:center;justify-content:center;color:var(--steel);font-weight:900}
.related-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.related-links a{min-height:74px;border:1px solid var(--border);border-radius:12px;padding:14px;background:#fff;display:flex;flex-direction:column;justify-content:center;text-decoration:none}
.related-links strong{color:var(--ink)}
.related-links span{color:var(--muted);font-size:13px}
.cta-bar{margin-top:22px;padding:22px;border-radius:16px;background:linear-gradient(135deg,#dff1fb,#eef7fb);border:1px solid var(--border);display:flex;gap:18px;align-items:center;justify-content:space-between}
.cta-bar h2{font-size:22px;margin-bottom:6px}
.cta-bar p{margin:0;color:var(--muted)}
.details-list details{border:1px solid var(--border);border-radius:12px;background:#fff;margin:10px 0;padding:0 16px}
.details-list summary{cursor:pointer;min-height:52px;display:flex;align-items:center;color:var(--ink);font-weight:800}
.details-list details p{padding:0 0 16px;margin:0;color:var(--text)}
.info-table{width:100%;border-collapse:collapse}
.info-table th,.info-table td{padding:14px 12px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
.info-table th{width:160px;color:var(--ink)}
.site-footer{background:#10263A;color:#C7D8E6;padding:54px 0 88px;margin-top:20px}
.footer-inner{max-width:1240px;margin:0 auto;padding:0 22px}
.footer-brand{display:grid;grid-template-columns:340px 1fr;gap:30px;padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand-link{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none}
.footer-brand-link strong{display:block;font-size:20px}
.footer-brand-link small{display:block;color:#9db5c8}
.footer-logo-image{height:32px;width:auto;object-fit:contain}
.footer-logo .media-placeholder{min-height:32px;height:32px;width:112px;border-radius:8px;background:rgba(255,255,255,.1);color:#fff}
.footer-brand p{margin:0;color:#b4c6d5}
.footer-groups{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;padding:28px 0}
.footer-groups section{display:grid;align-content:start;gap:7px}
.footer-groups h2{font-size:16px;color:#fff;margin:0 0 6px}
.footer-groups a{color:#C7D8E6;font-size:14px}
.footer-bottom{padding-top:18px;border-top:1px solid rgba(255,255,255,.12);color:#91aabc;font-size:13px}
.overlay{position:fixed;inset:0;background:rgba(8,29,44,.46);z-index:180;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s ease}
.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}
.site-panel{position:fixed;left:50%;bottom:18px;transform:translate(-50%,24px);width:min(980px,calc(100% - 32px));max-height:82vh;overflow:auto;background:#fff;border:1px solid var(--border);border-radius:18px;z-index:200;box-shadow:0 28px 80px rgba(8,29,44,.26);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,transform .2s ease,visibility .2s ease}
.site-panel.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
.panel-head,.search-head{position:sticky;top:0;z-index:2;background:rgba(255,255,255,.96);display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--border)}
.panel-brand{display:flex;align-items:center;gap:12px}
.panel-brand small,.search-head small{color:var(--soft);font-size:11px}
.panel-brand h2,.search-head h2{font-size:20px;margin:0}
.panel-logo-image{height:30px;width:auto;object-fit:contain}
.panel-logo .media-placeholder{height:30px;min-height:30px;min-width:102px;padding:0 8px;border-radius:7px;background:var(--surface-2)}
.close-button{width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:10px;color:var(--ink);font-size:25px;line-height:1}
.panel-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;padding:20px}
.panel-group h3{font-size:15px;color:var(--steel);padding-bottom:8px;border-bottom:1px solid var(--border)}
.panel-group a{display:block;padding:10px 0;border-bottom:1px dashed var(--border);text-decoration:none}
.panel-group a strong{display:block;color:var(--ink);font-size:14px}
.panel-group a span{display:block;color:var(--muted);font-size:12px;line-height:1.5;margin-top:2px}
.search-dialog{position:fixed;left:50%;top:50%;transform:translate(-50%,-47%);width:min(640px,calc(100% - 32px));max-height:84vh;overflow:auto;background:#fff;border:1px solid var(--border);border-radius:18px;z-index:210;box-shadow:0 28px 80px rgba(8,29,44,.26);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,transform .2s ease,visibility .2s ease}
.search-dialog.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,-50%)}
.search-field{display:block;padding:20px}
.search-field span{display:block;color:var(--muted);font-size:13px;margin-bottom:8px}
.search-field input{width:100%;min-height:48px;padding:0 14px;border:1px solid var(--border-strong);border-radius:10px;color:var(--ink);background:#fbfdff}
.search-tip{padding:0 20px;color:var(--soft);font-size:13px}
.search-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding:0 20px 20px}
.search-links a{min-height:46px;border:1px solid var(--border);border-radius:10px;padding:10px 12px;background:var(--surface-2);color:var(--ink);display:flex;align-items:center}
.search-empty{margin:0 20px 20px;padding:14px;border-radius:10px;background:var(--bg-deep);color:var(--muted)}
.mobile-bottom{display:none}
.home-cover{padding:0;overflow:hidden}
.home-cover .cover-media{background:linear-gradient(135deg,#ecf6fb,#dcebf5);border-bottom:1px solid var(--border);padding:14px}
.home-cover .cover-media .media-frame{border:0;padding:0;background:transparent;max-height:420px;aspect-ratio:auto}
.home-cover .cover-copy{padding:28px}
.editor-board{display:grid;grid-template-columns:1.35fr .65fr;gap:18px}
.editor-main{grid-row:span 2}
.editor-board .card{min-height:170px}
.mobile-showcase{display:grid;grid-template-columns:minmax(260px,.72fr) 1.28fr;gap:28px;align-items:center}
.app-icon-row{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.app-icon-row .media-frame{padding:6px}
.rule-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.rule-card{padding:20px;border-radius:14px;border:1px solid var(--border);background:#fff}
.rule-card:nth-child(2n){background:var(--surface-2)}
@media(max-width:1100px){
  .layout-shell{grid-template-columns:200px minmax(0,1fr);gap:20px}
  .task-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:960px){
  .layout-shell{display:block}
  .desktop-rail{display:none}
  .content-column{width:100%}
  .panel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:760px){
  body{font-size:16px}
  .topbar-inner{height:68px;padding:0 16px}
  .brand-status,.app-link,.action-label{display:none}
  .icon-button,.menu-button{padding:0 11px}
  .site-main{padding:18px 0 76px}
  .layout-shell{padding:0 16px}
  .page-hero,.editorial-hero,.content-section{padding:20px}
  .grid-2,.grid-3,.grid-4,.split,.split.reverse,.feature-band,.feature-band:nth-child(even),.shelf-layout,.mobile-showcase,.rule-cards,.footer-brand,.editor-board{grid-template-columns:1fr}
  .split.reverse .split-media,.feature-band:nth-child(even) .feature-media,.feature-band:nth-child(even) .feature-copy{order:initial}
  .feature-band{padding:18px 0}
  .task-strip{grid-template-columns:1fr}
  .mosaic{grid-template-columns:1fr}
  .mosaic .topic:nth-child(n){grid-column:auto}
  .related-links{grid-template-columns:1fr}
  .cta-bar{align-items:flex-start;flex-direction:column}
  .site-footer{padding:46px 0 88px}
  .footer-inner{padding:0 16px}
  .footer-groups{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-panel{left:0;bottom:0;transform:translateY(24px);width:100%;border-radius:18px 18px 0 0;max-height:82vh}
  .site-panel.is-open{transform:translateY(0)}
  .panel-grid{grid-template-columns:1fr;padding:16px}
  .search-links{grid-template-columns:1fr}
  .mobile-bottom{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;z-index:120;background:rgba(255,255,255,.96);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -8px 28px rgba(16,38,58,.08)}
  .mobile-bottom a{min-height:56px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px;text-decoration:none}
  .mobile-bottom a.is-current{background:var(--steel);color:#fff;font-weight:800}
  .media-frame.wide,.media-frame.standard,.media-frame.portrait{height:auto;max-height:none;aspect-ratio:auto;min-height:180px}
  .media-frame img{width:100%;height:auto;object-fit:contain}
  .home-cover .cover-media .media-frame{min-height:180px}
  .shelf-row{grid-template-columns:1fr}
  .process-step{grid-template-columns:44px 1fr}
}
@media(max-width:430px){
  h1{font-size:30px}
  .top-actions{gap:5px}
  .brand-logo-image{max-width:136px}
  .footer-groups{grid-template-columns:1fr 1fr;gap:18px 12px}
}
@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}