:root{--bg:#0D0D0D;--bg-deep:#070707;--panel:#171717;--panel-2:#222222;--text:#C8C8C8;--title:#F2F2F2;--muted:#9A9A9A;--soft:#6E6E6E;--silver:#C8C8C8;--bright:#E8E8E8;--ink:#1A1A1A;--fogred:#B85A5A;--line:rgba(232,232,232,.12);--line-strong:rgba(232,232,232,.36);--shadow:0 12px 28px rgba(0,0,0,.45);--radius:12px;--max:1120px}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--bg)}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}.panel-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}img{display:block;max-width:100%;object-fit:contain;object-position:center}.wrap{width:min(calc(100% - 32px),var(--max));margin-inline:auto}.skip-link{position:fixed;left:16px;top:-60px;z-index:999;background:var(--bright);color:var(--bg);padding:8px 12px;border-radius:8px}.skip-link:focus{top:8px}
.site-fixed-head{position:fixed;z-index:90;inset:0 0 auto 0}.ink-line{height:22px;background:var(--bg-deep);border-bottom:1px solid var(--line);font-size:12px;color:var(--silver)}.ink-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.text-control,.drawer-trigger,.icon-close{border:0;background:transparent;color:var(--silver);min-height:44px;padding:0 12px}.text-control{font-size:12px;min-height:22px}.material-bar{height:60px;background:var(--ink);border-bottom:1px solid var(--line)}.material-inner{height:60px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand-link{justify-self:start;display:flex;align-items:center;min-height:44px}.brand-logo,.drawer-logo,.footer-logo{height:28px;width:auto;max-width:180px}.brand-fallback{font-size:16px;font-weight:700;color:var(--bright)}.drawer-trigger{justify-self:center;border:1px solid var(--line-strong);border-radius:999px;height:40px;min-height:40px;padding:0 24px}.app-link{justify-self:end;display:inline-flex;align-items:center;justify-content:center;min-width:88px;height:40px;padding:0 16px;border-radius:999px;background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);color:#0D0D0D;font-weight:700;font-size:14px}.case-tabs{height:40px;background:var(--bg-deep);border-bottom:1px solid var(--line)}.case-inner{height:40px;display:flex;justify-content:center;align-items:center;gap:8px}.case-tabs a{display:inline-flex;height:30px;min-width:86px;align-items:center;justify-content:center;border-radius:8px;font-size:13px;color:var(--silver)}.case-tabs a.is-current{background:var(--bright);color:var(--bg)}
.site-main{padding-top:122px;min-height:65vh}.hero,.page-hero{padding:28px 0 22px}.page-hero h1,.hero h1{font-size:24px;line-height:1.3;margin:0 0 14px;color:var(--title)}h2{font-size:20px;line-height:1.35;color:var(--title);margin:0 0 12px}h3{font-size:16px;line-height:1.45;color:var(--title);margin:0 0 8px}p{margin:0 0 14px}.lead{max-width:840px;color:var(--text)}.eyebrow{display:inline-block;margin-bottom:10px;color:var(--muted);font-size:12px;letter-spacing:.14em;text-transform:uppercase}.section{padding:26px 0}.section+.section{border-top:1px solid var(--line)}.card,.article-box,.shelf-item,.note-card,.term-block,.faq-item,.method-card,.entry-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.card,.note-card,.method-card,.entry-card,.term-block{padding:20px}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.two-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.four-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.media-slot{width:100%;background:var(--ink);border:1px solid var(--line);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain}.hero-media{height:260px}.card-media{height:180px;margin-bottom:16px}.wide-media{height:200px;margin-bottom:18px}.app-media{height:360px}.media-empty{width:42%;height:42%;border:1px dashed var(--line-strong);border-radius:12px;opacity:.45}.buttons{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn-primary,.btn-secondary{height:42px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:10px;font-size:14px;font-weight:700;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);color:#0D0D0D}.btn-secondary{background:var(--bg-deep);color:var(--bright);border:1px solid var(--line-strong)}a:hover{color:var(--bright)}.btn-primary:hover{color:#0D0D0D;filter:brightness(1.05)}a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--bright);outline-offset:2px}
.number-list{display:grid;gap:12px}.number-row{display:grid;grid-template-columns:64px 1fr;gap:16px;align-items:start;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px}.number-row .num,.big-num{font-size:28px;line-height:1;color:var(--bright);font-weight:700;letter-spacing:-.03em}.shelf{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.shelf-item{padding:18px;display:grid;grid-template-columns:120px 1fr;gap:16px}.shelf-tag{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.12em}.timeline{position:relative;display:grid;gap:14px}.timeline:before{content:"";position:absolute;left:15px;top:8px;bottom:8px;width:1px;background:var(--line-strong)}.timeline-item{position:relative;padding:18px 18px 18px 48px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}.timeline-item:before{content:"";position:absolute;left:9px;top:24px;width:13px;height:13px;border-radius:50%;background:var(--bright);box-shadow:0 0 0 5px var(--panel)}.status{display:inline-flex;padding:2px 9px;border-radius:999px;background:var(--panel-2);border:1px solid var(--line);font-size:12px;color:var(--silver)}.memo-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.memo-card{background:linear-gradient(180deg,var(--panel),var(--bg-deep));border:1px solid var(--line);border-radius:var(--radius);padding:20px}.outline-list{counter-reset:item;display:grid;gap:12px}.outline-list>article{counter-increment:item;padding:20px 20px 20px 68px;position:relative;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}.outline-list>article:before{content:counter(item,decimal-leading-zero);position:absolute;left:18px;top:20px;color:var(--bright);font-size:24px;font-weight:700}.article-copy{max-width:860px}.article-copy p{margin-bottom:16px}.article-copy ul{margin:0 0 16px;padding-left:20px}.article-copy li{margin-bottom:7px}.divider-title{display:flex;align-items:center;gap:12px;margin-bottom:18px}.divider-title:after{content:"";height:1px;background:var(--line);flex:1}.soft-note{border-left:3px solid var(--fogred);padding:12px 14px;background:var(--panel);border-radius:0 10px 10px 0;color:var(--text)}
.faq-list{display:grid;gap:12px}.faq-item{padding:18px}.faq-item h2{font-size:16px}.site-footer{background:var(--bg-deep);border-top:1px solid var(--line);padding:36px 0 calc(24px + env(safe-area-inset-bottom));font-size:13px}.footer-top{display:grid;grid-template-columns:1.25fr 2fr;gap:36px}.footer-brand strong{display:block;color:var(--title);font-size:16px;margin-top:12px}.footer-brand>span{display:block;color:var(--muted);letter-spacing:.12em}.footer-brand p{margin-top:14px;color:var(--muted);max-width:480px}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.footer-grid h2{font-size:13px;margin-bottom:10px;color:var(--bright)}.footer-grid a{display:block;color:var(--muted);padding:4px 0}.footer-bottom{border-top:1px solid var(--line);margin-top:24px;padding-top:18px;display:flex;gap:16px;flex-wrap:wrap;color:var(--soft)}
.panel-mask{position:fixed;inset:0;z-index:120;background:rgba(0,0,0,.62);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.panel-mask.is-visible{opacity:1;visibility:visible;pointer-events:auto}.material-drawer{position:fixed;left:0;top:0;bottom:0;width:min(400px,86vw);z-index:130;background:var(--bg-deep);border-right:1px solid var(--line-strong);transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s;overflow-y:auto;padding-bottom:28px}.material-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{position:sticky;top:0;background:rgba(7,7,7,.98);display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--line);z-index:2}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-brand strong,.drawer-brand span{display:block}.drawer-brand span{font-size:11px;color:var(--muted);letter-spacing:.12em}.icon-close{border:1px solid var(--line);border-radius:9px;height:40px;min-height:40px}.drawer-groups{padding:14px 16px 0}.drawer-groups section+section{margin-top:20px}.drawer-groups h2{font-size:12px;color:var(--muted);letter-spacing:.1em}.drawer-groups a{display:grid;grid-template-columns:86px 1fr;gap:10px;padding:12px 0;border-top:1px solid var(--line)}.drawer-groups strong{color:var(--bright)}.drawer-groups span{color:var(--muted);font-size:13px}.search-layer{position:fixed;z-index:135;top:82px;left:50%;width:min(760px,calc(100% - 32px));transform:translate(-50%,-18px);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-layer.is-open{transform:translate(-50%,0);opacity:1;visibility:visible;pointer-events:auto}.search-card{background:var(--ink);border:1px solid var(--line-strong);border-radius:14px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;align-items:center;justify-content:space-between}.search-card label{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}.search-row{display:grid;grid-template-columns:1fr auto;gap:10px}.search-row input{width:100%;height:44px;border:1px solid var(--line-strong);background:var(--bg-deep);color:var(--bright);border-radius:10px;padding:0 12px}.search-row button{height:44px;border:0;border-radius:10px;padding:0 18px;background:var(--bright);color:var(--bg);font-weight:700}.search-hint{min-height:24px;font-size:12px;color:var(--muted);margin:8px 0 0}.preset-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.preset-links a{display:inline-flex;align-items:center;min-height:40px;padding:0 13px;border:1px solid var(--line);border-radius:999px;color:var(--silver)}.mobile-bottom{display:none}
@media(max-width:820px){.case-tabs{display:none}.site-main{padding-top:82px;padding-bottom:64px}.material-inner{grid-template-columns:auto 1fr auto}.brand-link{max-width:120px}.drawer-trigger{justify-self:center}.app-link{min-width:78px;padding:0 12px}.card-grid,.two-grid,.four-grid,.shelf,.memo-grid{grid-template-columns:1fr}.shelf-item{grid-template-columns:1fr}.footer-top{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.search-layer{top:0;left:0;width:100%;height:100dvh;transform:none;background:var(--bg-deep);padding:14px;opacity:0}.search-layer.is-open{transform:none}.search-card{height:100%;border-radius:12px;overflow-y:auto}.mobile-bottom{position:fixed;z-index:80;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(5,1fr);height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:rgba(7,7,7,.97);border-top:1px solid var(--line)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-width:0;font-size:12px;color:var(--silver)}.mobile-bottom a.is-current{background:var(--bright);color:var(--bg)}.hero,.page-hero{padding-top:22px}.hero-media{height:220px}.app-media{height:320px}.number-row{grid-template-columns:52px 1fr}.panel-mask{bottom:0}.site-footer{padding-bottom:calc(76px + env(safe-area-inset-bottom))}}
@media(max-width:520px){.wrap{width:min(calc(100% - 32px),var(--max))}.ink-inner{font-size:11px}.material-inner{gap:8px}.brand-link{min-width:84px}.brand-logo{max-width:108px}.drawer-trigger{padding:0 18px}.app-link{font-size:13px}.card,.note-card,.method-card,.entry-card,.term-block{padding:16px}.hero-media{height:190px}.card-media{height:170px}.wide-media{height:185px}.app-media{height:300px}.footer-grid{grid-template-columns:1fr 1fr}.drawer-groups a{grid-template-columns:72px 1fr;gap:8px}.number-row{padding:16px}.number-row .num{font-size:24px}}