:root{--bg:#E4E8EA;--deep:#C8D0D4;--surface:#F2F5F6;--surface2:#D6DDE0;--ink:#1E2A2E;--text:#2E3C42;--muted:#5A6A70;--soft:#7A8A90;--steel:#5A7A80;--steel2:#6A8890;--copper:#B88860;--line:rgba(30,42,46,.12);--focus:rgba(90,122,128,.48);--shadow:0 12px 28px rgba(30,42,46,.08);--radius:6px}
*{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","PingFang SC",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}a{color:inherit;text-decoration:none}img{max-width:100%;display:block;object-fit:contain;object-position:center}.shell{width:min(960px,calc(100% - 32px));margin:0 auto}.skip-link{position:fixed;left:12px;top:-60px;z-index:9999;background:var(--surface);padding:10px 14px;border:1px solid var(--focus)}.skip-link:focus{top:8px}.site-header{position:fixed;inset:0 0 auto 0;z-index:800}.top-strip{height:20px;background:var(--steel);color:var(--surface);font-size:12px}.strip-inner{height:20px;display:flex;align-items:center;justify-content:space-between}.text-button,.menu-button,.close-button{font:inherit;border:0;cursor:pointer}.text-button{background:transparent;color:var(--surface);height:20px;padding:0 4px}.brand-row{height:54px;background:var(--surface);border-bottom:1px solid var(--copper)}.brand-inner{height:54px;display:flex;align-items:center;justify-content:space-between;gap:12px}.brand-link{display:inline-flex;align-items:center;gap:10px;min-height:44px}.brand-fallback{font-size:16px;color:var(--ink)}.small-slot{min-width:0;min-height:0;background:transparent}.brand-logo{height:24px;width:auto}.brand-image-slot:empty{display:none}.brand-actions{display:flex;align-items:center;gap:8px}.header-app,.menu-button{min-height:44px;display:inline-flex;align-items:center;padding:0 13px;border-radius:4px}.header-app{background:linear-gradient(135deg,var(--steel),var(--copper));color:var(--surface)}.menu-button{background:var(--surface);border:1px solid var(--steel);color:var(--ink)}.quick-nav{height:44px;background:var(--surface);border-bottom:1px solid var(--line)}.quick-inner{height:44px;display:flex;justify-content:flex-start;align-items:flex-start;gap:22px}.quick-item{width:88px;text-align:center;font-size:13px;line-height:1.2;padding-top:6px;color:var(--muted)}.quick-item span{display:block;width:88px;height:4px;background:var(--steel);margin:0 auto 5px;border-radius:3px}.quick-item b{font-weight:500}.quick-item.is-active span{height:6px;background:var(--copper)}.quick-item.is-active b{font-weight:700;color:var(--ink)}.main-shell{padding-top:146px;padding-bottom:70px;min-height:70vh}.page-intro{padding:34px 0 24px;border-bottom:1px solid var(--line)}.eyebrow{margin:0 0 8px;color:var(--steel);font-size:13px;font-weight:700;letter-spacing:.04em}h1{margin:0;color:var(--ink);font-size:24px;line-height:1.3}h2{font-size:20px;line-height:1.4;color:var(--ink)}h3{font-size:16px;color:var(--ink)}p{margin:0 0 1em}.lead{max-width:760px;margin-top:12px;color:var(--muted)}.section{padding:34px 0;border-bottom:1px solid var(--line)}.section:last-child{border-bottom:0}.section-title{display:flex;align-items:end;justify-content:space-between;gap:12px;margin-bottom:18px}.section-title h2{margin:0}.section-title p{margin:0;color:var(--muted);font-size:13px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 18px;border-radius:5px;font-size:14px;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,var(--steel),var(--copper));color:var(--surface)}.btn-secondary{background:var(--surface);border:1px solid var(--steel);color:var(--ink)}.btn:hover,.header-app:hover,.menu-button:hover,.quick-item:hover{filter:brightness(.98)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.image-slot{background:var(--surface);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;overflow:hidden}.image-slot img{width:100%;height:100%;object-fit:contain}.image-slot:empty::before{content:"";display:block;min-height:inherit}.slot-180{height:180px}.slot-220{height:220px}.slot-320{height:min(320px,60vw)}.hero-index{display:flex;gap:10px;margin-bottom:18px}.hero-index a{display:flex;align-items:center;gap:8px;font-size:13px;padding:8px 10px;background:var(--surface);border:1px solid var(--line);border-radius:5px}.hero-index span{width:34px;height:4px;background:var(--steel);border-radius:4px}.hero-copy{max-width:760px}.hero-copy .motto{font-size:20px;color:var(--ink);font-weight:700;margin:12px 0}.stagger{display:grid;grid-template-columns:1.06fr .94fr;gap:18px;align-items:start}.stagger .card{background:var(--surface);border:1px solid var(--line);padding:18px;border-radius:var(--radius);box-shadow:var(--shadow)}.stagger .card:nth-child(2){margin-top:42px}.horizontal-list{display:grid;gap:12px}.horizontal-item{display:grid;grid-template-columns:160px 1fr;gap:18px;padding:16px 0;border-top:1px solid var(--line)}.horizontal-item:first-child{border-top:0}.horizontal-item .index{color:var(--copper);font-weight:700}.fold-pair{display:grid;grid-template-columns:1fr 1fr;gap:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.fold-pair article{padding:20px;min-width:0}.fold-pair article+article{border-left:1px dashed var(--steel)}.center-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:760px;margin:0 auto}.center-card{background:var(--surface);border:1px solid var(--line);padding:20px;text-align:center;border-radius:var(--radius)}.season-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.season-grid article{background:var(--surface2);padding:18px;border-radius:var(--radius)}.status-list{display:grid;gap:12px}.status-row{display:grid;grid-template-columns:110px 1fr;gap:16px;align-items:center;background:var(--surface);padding:14px 16px;border-radius:var(--radius);border:1px solid var(--line)}.status{display:inline-flex;align-items:center;justify-content:center;min-height:32px;border-radius:4px;background:var(--deep);font-weight:700;color:var(--ink)}.app-top{display:grid;grid-template-columns:220px 1fr;gap:20px;align-items:start}.app-top .image-slot{grid-column:1/-1;max-width:420px;margin:0 auto}.app-copy{text-align:left;max-width:760px;margin:0 auto}.icon-line{display:flex;align-items:center;gap:12px;margin-bottom:12px}.app-icon{width:48px;height:48px}.faq-mini{display:grid;grid-template-columns:1fr 1fr;gap:12px}.faq-mini details{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px}.faq-mini summary{cursor:pointer;font-weight:700;color:var(--ink)}.article-stack{display:grid;gap:18px}.article-block{background:var(--surface);border:1px solid var(--line);padding:20px;border-radius:var(--radius)}.article-block h2,.article-block h3{margin-top:0}.memo-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}.memo-item{background:var(--surface);border-left:4px solid var(--steel);padding:18px}.topic-list{display:grid;gap:12px}.topic-list article{background:var(--surface);border:1px solid var(--line);padding:18px;border-radius:var(--radius)}.terms{counter-reset:term}.terms article{counter-increment:term;padding:20px 0;border-bottom:1px solid var(--line)}.terms article h2::before{content:counter(term,"decimal-leading-zero") ". ";color:var(--copper)}.banner-slot{height:200px;background:var(--surface);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;margin:22px 0}.banner-slot img{width:100%;height:100%;object-fit:contain}.site-footer{background:var(--ink);color:var(--bg);border-top:1px solid var(--copper);font-size:13px;padding:34px 0 78px}.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:24px}.footer-brand div{display:flex;flex-direction:column}.footer-brand strong{font-size:16px}.footer-brand span{color:var(--deep)}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.footer-groups h2{font-size:13px;color:var(--bg);margin:0 0 8px}.footer-groups a{display:block;color:var(--deep);padding:3px 0}.footer-note{margin-top:24px;color:var(--deep);max-width:760px}.copyright{margin:8px 0 0;color:var(--soft)}.overlay{position:fixed;inset:0;background:rgba(30,42,46,.48);z-index:900;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.menu-panel{position:fixed;right:18px;bottom:62px;width:260px;max-height:360px;background:var(--surface);z-index:930;border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(22px);transition:.2s}.menu-panel.is-open{opacity:1;visibility:visible;pointer-events:auto;transform:none}.menu-head{height:54px;display:flex;align-items:center;justify-content:space-between;padding:0 14px;border-bottom:1px solid var(--line)}.menu-brand{display:flex;align-items:center;gap:8px}.close-button{min-height:40px;padding:0 10px;background:var(--surface2);border-radius:4px;color:var(--ink)}.menu-scroll{max-height:305px;overflow:auto;padding:12px}.menu-scroll section{margin-bottom:14px}.menu-scroll h2{font-size:13px;margin:0 0 5px;color:var(--steel)}.menu-scroll a{display:block;padding:7px 8px;border-radius:4px}.menu-scroll a:hover{background:var(--surface2)}.menu-scroll b,.menu-scroll span{display:block}.menu-scroll span{font-size:12px;color:var(--muted)}.search-layer{position:fixed;left:0;right:0;top:74px;z-index:940;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-layer.is-open{opacity:1;visibility:visible;pointer-events:auto}.search-card{width:min(720px,calc(100% - 32px));margin:0 auto;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);padding:20px;border-radius:0 0 8px 8px}.search-top{display:flex;align-items:center;justify-content:space-between}.search-top h2{margin:0}.search-card label{display:block;font-size:13px;margin-top:10px}.search-card input{width:100%;height:44px;border:1px solid var(--steel);background:#fff;padding:0 12px;font:inherit;margin:5px 0 12px}.search-links{display:flex;flex-wrap:wrap;gap:8px}.search-links a{display:inline-flex;min-height:40px;align-items:center;padding:0 12px;border:1px solid var(--line);border-radius:4px}.mobile-bar{display:none}.no-scroll{overflow:hidden}.notice{background:var(--surface2);border-left:4px solid var(--copper);padding:14px 16px;border-radius:4px}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px}.plain-list{margin:0;padding-left:20px}.plain-list li{margin:7px 0}.contact-path{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.contact-path article{background:var(--surface);border:1px solid var(--line);padding:18px;border-radius:var(--radius)}
@media (max-width:720px){.quick-nav{display:none}.main-shell{padding-top:94px;padding-bottom:80px}.shell{width:calc(100% - 32px)}.brand-actions{gap:4px}.header-app,.menu-button{padding:0 10px}.hero-index{flex-wrap:wrap}.stagger,.fold-pair,.center-cards,.season-grid,.two-col,.memo-list,.contact-path,.faq-mini{grid-template-columns:1fr}.stagger .card:nth-child(2){margin-top:0}.fold-pair article+article{border-left:0;border-top:1px dashed var(--steel)}.horizontal-item{grid-template-columns:1fr}.status-row{grid-template-columns:92px 1fr}.footer-groups{grid-template-columns:1fr 1fr}.menu-panel{right:6%;bottom:60px;width:88%;max-height:360px}.search-layer{inset:0;top:0;background:var(--steel);display:flex;align-items:flex-start;padding-top:34px}.search-card{background:var(--steel);color:var(--surface);border:0;box-shadow:none}.search-top h2,.search-card label{color:var(--surface)}.search-card .close-button{background:var(--surface);color:var(--ink)}.search-card input{background:var(--surface)}.search-links a{border-color:rgba(242,245,246,.45);color:var(--surface)}.mobile-bar{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;left:0;right:0;bottom:0;z-index:850;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--surface);border-top:1px solid var(--line)}.mobile-bar a{display:flex;align-items:center;justify-content:center;min-height:48px;font-size:13px}.mobile-bar a.is-active{background:var(--steel);color:var(--surface)}.site-footer{padding-bottom:92px}.slot-320{height:280px}.app-top{grid-template-columns:1fr}}