:root{
--bg:#0D0D0D;--deep:#070707;--panel:#171717;--panel2:#222222;--title:#F2F2F2;--text:#C8C8C8;--muted:#9A9A9A;--faint:#6E6E6E;--silver:#C8C8C8;--bright:#E8E8E8;--ink:#1A1A1A;--red:#B85A5A;--border:rgba(232,232,232,.12);--border-strong:rgba(232,232,232,.36);--shadow:0 12px 28px rgba(0,0,0,.45);--max:1120px;--radius:12px;
}
*{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",sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}body.lock-scroll{overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%;display:block}.skip-link{position:fixed;left:16px;top:-80px;z-index:999;background:var(--bright);color:var(--bg);padding:8px 12px;border-radius:8px}.skip-link:focus{top:8px}.fixed-header{position:fixed;z-index:700;top:0;left:0;right:0;box-shadow:0 8px 18px rgba(0,0,0,.22)}.bar-inner{max-width:var(--max);margin:0 auto;padding:0 20px}.inkline{height:22px;background:var(--deep);border-bottom:1px solid var(--border);font-size:12px;color:var(--silver)}.inkline-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.text-button,.drawer-trigger,.close-button{border:0;background:transparent;color:var(--bright);cursor:pointer}.text-button{min-width:44px;min-height:22px;padding:0 4px;font-size:12px}.feedbar{height:60px;background:var(--ink);border-bottom:1px solid var(--border)}.feedbar-inner{height:60px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px}.brand-link{justify-self:start;display:flex;align-items:center;min-height:44px}.brand-logo,.drawer-logo,.footer-logo{height:28px;width:auto;object-fit:contain;object-position:center}.brand-fallback{font-size:16px;font-weight:700;color:var(--bright);letter-spacing:.05em}.drawer-trigger{min-width:88px;min-height:44px;padding:0 18px;border:1px solid var(--border-strong);border-radius:10px;color:var(--bright);background:#111}.app-link{justify-self:end;display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 16px;border-radius:10px;background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);color:#0D0D0D;font-size:14px;font-weight:700;white-space:nowrap}.case-tabs{height:40px;background:#101010;border-bottom:1px solid var(--border)}.case-tabs-inner{height:40px;display:flex;align-items:center;justify-content:center;gap:10px}.case-tabs a{height:32px;min-width:86px;padding:0 16px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;font-size:13px;color:var(--text)}.case-tabs a.is-current{background:var(--silver);color:var(--bg);font-weight:700}.site-main{max-width:var(--max);margin:0 auto;padding:150px 20px 64px}.page-hero{padding:26px 0 24px;border-bottom:1px solid var(--border)}.eyebrow{margin:0 0 8px;color:var(--red);font-size:12px;letter-spacing:.12em}.page-hero h1,.cover-copy h1{margin:0;color:var(--title);font-size:24px;line-height:1.3}.lede{max-width:820px;margin:12px 0 0;color:var(--text)}h2{font-size:20px;line-height:1.35;color:var(--title)}h3{font-size:16px;line-height:1.45;color:var(--bright)}p{margin:0 0 14px}.section{padding:28px 0;border-bottom:1px solid var(--border)}.section:last-child{border-bottom:0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}.section-head h2{margin:0}.section-kicker{font-size:12px;color:var(--muted);white-space:nowrap}.grid-2,.grid-3,.grid-4{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))}.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}.card h2,.card h3{margin:0 0 10px}.card p:last-child{margin-bottom:0}.card-number{display:block;color:var(--bright);font-size:28px;line-height:1;font-weight:800;margin-bottom:14px;letter-spacing:.04em}.small-number{font-size:12px;color:var(--muted);letter-spacing:.08em}.media-slot{width:100%;height:200px;background:var(--ink);border:1px solid var(--border);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;overflow:hidden;margin-bottom:16px}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-slot.banner{height:260px}.media-slot.feature{height:180px}.media-slot.app-visual{height:360px;max-height:360px}.cover-block{padding-top:6px}.cover-copy{padding:22px 0 30px}.cover-copy h1{margin-bottom:12px}.cover-copy .brand-name{display:block;color:var(--muted);font-size:13px;letter-spacing:.12em;margin-bottom:8px}.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}.btn{min-height:42px;padding:0 18px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;white-space:nowrap;border:1px solid var(--border-strong)}.btn-primary{background:linear-gradient(135deg,#E8E8E8 0%,#C8C8C8 55%,#8A8A8A 100%);color:#0D0D0D;border-color:transparent;font-weight:700}.btn-secondary{background:#101010;color:var(--bright)}.btn:hover,.drawer-trigger:hover,.app-link:hover,.case-tabs a:hover,.preset-links a:hover,.mobile-bottom a:hover{filter:brightness(1.08)}a:focus-visible,button:focus-visible{outline:2px solid var(--bright);outline-offset:3px}.shelf{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.shelf-item{background:var(--panel);border:1px solid var(--border);border-left:3px solid var(--silver);border-radius:10px;padding:16px}.shelf-item strong{display:block;color:var(--title);margin-bottom:6px}.meta-line{display:flex;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:13px}.tag{display:inline-flex;align-items:center;min-height:28px;padding:2px 9px;border:1px solid var(--border);border-radius:999px;background:#111;color:var(--silver);font-size:12px}.timeline{position:relative;margin-top:10px;padding-left:28px}.timeline:before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:1px;background:var(--border-strong)}.timeline-item{position:relative;padding:0 0 24px}.timeline-item:last-child{padding-bottom:0}.timeline-item:before{content:"";position:absolute;left:-25px;top:8px;width:10px;height:10px;border-radius:50%;background:var(--silver);box-shadow:0 0 0 4px #171717}.timeline-item h3{margin:0 0 6px}.status{display:inline-flex;align-items:center;min-height:28px;padding:2px 9px;border-radius:999px;border:1px solid var(--border-strong);color:var(--bright);font-size:12px;margin-bottom:8px}.memo{border-left:3px solid var(--red);padding-left:16px}.notice{background:var(--panel2);border:1px solid var(--border-strong);border-radius:var(--radius);padding:18px}.notice strong{color:var(--bright)}.rule-list{margin:0;padding-left:20px}.rule-list li{margin:8px 0}.faq-list{display:grid;gap:12px}.faq-item{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px}.faq-item h2,.faq-item h3{margin:0 0 8px}.site-footer{background:var(--deep);border-top:1px solid var(--border);color:var(--text);font-size:13px}.footer-inner{max-width:var(--max);margin:0 auto;padding:30px 20px 72px}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}.footer-brand strong{font-size:16px;color:var(--bright)}.footer-brand span{color:var(--muted);letter-spacing:.1em}.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.footer-grid section{display:flex;flex-direction:column;gap:7px}.footer-grid h2{font-size:13px;margin:0 0 4px;color:var(--bright)}.footer-grid a{color:var(--text)}.footer-note{margin:24px 0 8px;color:var(--muted);max-width:900px}.copyright{margin:0;color:var(--faint)}.overlay{position:fixed;inset:0;z-index:800;background:rgba(0,0,0,.68);opacity:0;pointer-events:none;transition:opacity .18s ease}.overlay.is-visible{opacity:1;pointer-events:auto}.drawer-panel{position:fixed;z-index:900;left:0;top:0;bottom:0;width:400px;max-width:86vw;background:#0B0B0B;border-right:1px solid var(--border-strong);box-shadow:var(--shadow);transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s}.drawer-panel.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{height:72px;padding:0 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-brand div{display:flex;flex-direction:column}.drawer-brand strong{color:var(--bright)}.drawer-brand span{font-size:11px;color:var(--muted);letter-spacing:.08em}.close-button{min-width:52px;min-height:44px;border:1px solid var(--border);border-radius:10px}.drawer-scroll{height:calc(100% - 72px);overflow-y:auto;padding:14px 14px 28px}.drawer-group{padding:8px 0 14px;border-bottom:1px solid var(--border)}.drawer-group:last-child{border-bottom:0}.drawer-group h2{font-size:12px;color:var(--muted);margin:0 8px 8px}.drawer-group a{display:block;padding:10px 8px;border-radius:10px}.drawer-group a:hover{background:var(--panel)}.drawer-group strong{display:block;color:var(--bright);font-size:14px}.drawer-group span{display:block;color:var(--muted);font-size:12px;margin-top:2px}.search-layer{position:fixed;z-index:880;top:82px;left:0;right:0;visibility:hidden;pointer-events:none;transform:translateY(-14px);opacity:0;transition:.18s ease}.search-layer.is-open{visibility:visible;pointer-events:auto;transform:translateY(0);opacity:1}.search-card{max-width:900px;margin:12px auto 0;background:var(--ink);border:1px solid var(--border-strong);border-radius:14px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;align-items:center;justify-content:space-between;gap:16px}.search-head div{display:flex;flex-direction:column}.search-head strong{color:var(--bright);font-size:18px}.search-head span{color:var(--muted);font-size:13px}.preset-links{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 12px}.preset-links a{min-height:44px;padding:0 16px;border:1px solid var(--border-strong);border-radius:10px;display:inline-flex;align-items:center;background:#101010}.search-tip{color:var(--muted);font-size:13px;margin:0}.mobile-bottom{display:none}.prose h2{margin:28px 0 10px}.prose h3{margin:20px 0 8px}.prose p{max-width:900px}.two-column-prose{columns:2;column-gap:32px}.two-column-prose p{break-inside:avoid}.link-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.link-card{display:block;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px;min-height:120px}.link-card strong{display:block;color:var(--bright);margin-bottom:5px}.link-card span{color:var(--muted);font-size:13px}.app-icon-row{display:flex;align-items:center;gap:14px}.app-icon-slot{width:48px;height:48px;flex:0 0 48px;background:var(--ink);border:1px solid var(--border);border-radius:12px;display:flex;align-items:center;justify-content:center;overflow:hidden}.app-icon-slot img{width:48px;height:48px;object-fit:contain}.center-note{text-align:center;color:var(--muted);font-size:13px}.divider{height:1px;background:var(--border);margin:18px 0}
@media(max-width:760px){.bar-inner{padding:0 16px}.case-tabs{display:none}.feedbar-inner{grid-template-columns:1fr auto 1fr;gap:8px}.brand-link{min-width:0}.brand-logo{max-width:110px}.brand-fallback{font-size:15px}.drawer-trigger{min-width:66px;padding:0 12px}.app-link{padding:0 11px;font-size:13px}.site-main{padding:104px 16px 86px}.grid-2,.grid-3,.grid-4,.shelf,.link-cards{grid-template-columns:1fr}.media-slot.banner{height:260px}.media-slot.feature{height:180px}.page-hero{padding-top:18px}.section{padding:22px 0}.section-head{align-items:flex-start;flex-direction:column;gap:4px}.two-column-prose{columns:1}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-inner{padding:28px 16px 88px}.mobile-bottom{position:fixed;z-index:650;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:#0A0A0A;border-top:1px solid var(--border-strong);box-shadow:0 -8px 22px rgba(0,0,0,.35)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--text);min-width:0}.mobile-bottom a.is-current{background:var(--silver);color:var(--bg);font-weight:700}.search-layer{inset:0;top:0;background:var(--deep);transform:none}.search-layer.is-open{transform:none}.search-card{height:100%;margin:0;border:0;border-radius:0;padding:26px 16px}.preset-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.preset-links a{justify-content:center}.drawer-panel{max-width:86vw}.inkline-inner{padding-left:16px;padding-right:16px}}
@media(max-width:390px){.brand-logo{max-width:86px}.brand-fallback{font-size:14px}.app-link{font-size:12px;padding:0 8px}.drawer-trigger{min-width:58px;padding:0 8px}.footer-grid{grid-template-columns:1fr 1fr}}