:root{--bg:#D7E4E6;--deep:#C4D4D6;--paper:#F3F7F7;--soft:#E4EEEF;--ink:#1E2C2E;--text:#2A3A3C;--muted:#4A6064;--quiet:#6A8084;--teal:#4A8A8C;--sand:#C4A070;--line:rgba(30,44,46,.14);--focus:rgba(74,138,140,.42);--shadow:0 12px 28px rgba(30,44,46,.08)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}
body.locked{overflow:hidden}
a{color:inherit;text-decoration:none}
button{font:inherit}
.topline{position:fixed;z-index:50;top:0;left:0;right:0;height:20px;background:var(--ink);color:var(--paper);display:flex;align-items:center;justify-content:space-between;padding:0 18px;font-size:12px}
.brand-mini{font-weight:700;letter-spacing:.03em}
.text-btn,.head-actions button,.panel-head button,.search-card button{border:0;background:transparent;color:inherit;cursor:pointer}
.sitehead{position:fixed;z-index:49;top:20px;left:0;right:0;height:54px;background:var(--paper);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 18px}
.brand{display:flex;align-items:center;min-height:44px}.brand img,.footer-brand img,.panel-brand img{height:24px;max-width:140px;object-fit:contain}
.head-actions{display:flex;gap:8px;align-items:center}.head-actions a,.head-actions button{min-height:44px;padding:0 14px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);display:inline-flex;align-items:center}
.side-nav{position:fixed;z-index:40;top:74px;left:0;width:124px;padding:14px 12px;background:rgba(243,247,247,.86);backdrop-filter:blur(8px);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.side-nav a{height:34px;display:flex;align-items:center;padding-left:12px;position:relative;color:var(--muted)}
.side-nav a.active{color:var(--ink);font-weight:700}.side-nav a.active:before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;background:var(--teal);border-radius:2px}
.page-shell{max-width:980px;margin:0 auto;padding:112px 20px 72px}
.hero,.section,.paper,.center-card,.terms,.guide,.product,.timeline,.status-list,.memo,.topic-list{background:var(--paper);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow);margin-bottom:20px}
.hero,.section,.paper,.terms,.guide,.timeline,.status-list,.memo,.topic-list{padding:28px}
.eyebrow{font-size:12px;color:var(--teal);font-weight:800;letter-spacing:.08em;text-transform:uppercase}
h1{font-size:24px;line-height:1.3;margin:.2em 0 .6em;color:var(--ink)}
h2{font-size:20px;color:var(--ink);margin:.2em 0 .6em}
h3{font-size:16px;color:var(--ink);margin:.2em 0 .5em}
p{margin:.55em 0 1em}
.lead{font-size:16px;color:var(--muted);max-width:760px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 18px;border-radius:8px;background:linear-gradient(135deg,#4A8A8C 0%,#1E2C2E 100%);color:var(--paper);font-weight:700}
.btn.secondary{background:var(--paper);color:var(--ink);border:1px solid var(--teal)}
.btn:hover,.head-actions a:hover,.head-actions button:hover,.search-links a:hover{transform:translateY(-1px)}
a:focus-visible,button:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
.index-shortcuts{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:14px}.index-shortcuts a{padding:8px 10px;background:var(--soft);border-radius:8px;text-align:center;font-weight:700}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}.news-col{padding:20px;background:var(--paper);border:1px solid var(--line);border-radius:10px}.news-col:first-child{background:var(--soft)}
.media-slot{height:168px;background:var(--deep);border-radius:8px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.marquee-list{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:14px}.marquee-item{padding:18px;border:1px solid var(--line);border-radius:9px;background:#fff}
.insert-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.insert-card{padding:22px;background:#fff;border-left:4px solid var(--teal);border-radius:7px}
.topic-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.topic-card{padding:20px;background:var(--soft);border-radius:8px}
.periods{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.period{padding:18px;background:#fff;border-top:3px solid var(--sand);border-radius:8px}
.status-row{display:grid;grid-template-columns:120px 1fr;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}.status-row:last-child{border-bottom:0}.status-tag{font-weight:800;color:var(--teal)}
.product{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;padding:28px}.product-visual{min-height:260px;background:var(--soft);border-radius:10px;display:flex;align-items:center;justify-content:center}.product-visual img{width:100%;max-height:320px;object-fit:contain}
.product-icon{width:48px!important;height:48px!important;object-fit:contain!important}
.center-card{max-width:760px;margin:0 auto 20px;padding:30px;text-align:center}.center-card p{text-align:left}
.memo ul,.guide ul{padding-left:1.2em}.memo li,.guide li{margin:.6em 0}
.topic-list article,.timeline article{padding:20px 0;border-bottom:1px solid var(--line)}.topic-list article:last-child,.timeline article:last-child{border-bottom:0}
.terms section{padding:10px 0 18px;border-bottom:1px solid var(--line)}.terms section:last-child{border-bottom:0}
.faq details{background:var(--paper);border:1px solid var(--line);border-radius:9px;margin:10px 0;padding:14px 18px}.faq summary{cursor:pointer;color:var(--ink);font-weight:800}.faq p{margin-bottom:0}
.site-footer{background:#162022;color:#D7E4E6;padding:34px 20px 82px;border-top:1px solid var(--teal);font-size:13px}.footer-grid{max-width:980px;margin:0 auto;display:grid;grid-template-columns:2fr repeat(4,1fr);gap:20px}.footer-grid h3{color:#F3F7F7}.footer-grid a{display:block;margin:6px 0}.footer-brand{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.footer-brand span{color:#8ca5a8}.copyright{max-width:980px;margin:26px auto 0;padding-top:16px;border-top:1px solid rgba(215,228,230,.15)}
.overlay{position:fixed;z-index:70;inset:0;background:rgba(22,32,34,.48)}.overlay[hidden]{display:none}
.menu-panel{position:fixed;z-index:80;left:18px;bottom:18px;width:min(360px,88vw);max-height:480px;overflow:auto;background:var(--paper);border:1px solid var(--line);border-radius:12px;box-shadow:0 18px 55px rgba(22,32,34,.3);padding:16px;visibility:hidden;pointer-events:none;transform:translateY(20px);opacity:0;transition:.2s}.menu-panel.open{visibility:visible;pointer-events:auto;transform:none;opacity:1}
.panel-head{display:flex;align-items:center;justify-content:space-between;position:sticky;top:-16px;background:var(--paper);padding:12px 0;z-index:2}.panel-brand{display:flex;gap:10px;align-items:center}.menu-groups h3{margin-top:16px}.menu-groups a{display:grid;grid-template-columns:84px 1fr;gap:8px;padding:8px;border-radius:7px}.menu-groups a:hover{background:var(--soft)}.menu-groups span{color:var(--muted);font-size:12px}
.search-panel{position:fixed;z-index:81;top:74px;left:50%;width:min(720px,calc(100vw - 32px));transform:translate(-50%,-10px);visibility:hidden;pointer-events:none;opacity:0;transition:.2s}.search-panel.open{visibility:visible;pointer-events:auto;transform:translate(-50%,0);opacity:1}.search-card{background:var(--paper);padding:24px;border:1px solid var(--line);border-radius:0 0 12px 12px;box-shadow:var(--shadow)}.search-card>button{float:right}.search-links{display:flex;flex-wrap:wrap;gap:8px}.search-links a{padding:9px 12px;background:var(--soft);border-radius:7px}
.mobile-nav{display:none}
@media(max-width:760px){
  .topline{padding:0 12px}.sitehead{padding:0 10px}.side-nav{display:none}.page-shell{padding:96px 16px 78px}
  .two-col,.insert-grid,.product,.footer-grid{grid-template-columns:1fr}.marquee-list,.periods{grid-template-columns:1fr}.topic-cards{grid-template-columns:1fr}.index-shortcuts{grid-template-columns:repeat(2,1fr)}
  .hero,.section,.paper,.terms,.guide,.timeline,.status-list,.memo,.topic-list,.product{padding:20px}.product-visual{min-height:220px}
  .search-panel{top:0;left:0;width:100vw;height:100vh;transform:none;background:var(--ink);color:var(--paper);padding:20px}.search-panel.open{transform:none}.search-card{min-height:100%;background:var(--ink);color:var(--paper);border:0;box-shadow:none}.search-card h2{color:var(--paper)}.search-links a{background:#284346}
  .mobile-nav{position:fixed;z-index:60;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--paper);border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(4,1fr)}.mobile-nav a{display:flex;align-items:center;justify-content:center;min-height:48px}
  .site-footer{padding-bottom:90px}.footer-grid{gap:12px}.status-row{grid-template-columns:1fr}
}