:root{--bg:#1C1C1E;--deep:#141416;--panel:#2A2A2E;--panel2:#323238;--title:#F2F2F4;--text:#D8D8DC;--muted:#A0A0A8;--dim:#7A7A82;--silver:#C8C8D0;--blue:#6A8AAA;--line:rgba(200,200,208,.16);--line2:rgba(106,138,170,.48);--shadow:0 12px 28px rgba(0,0,0,.28);--max:980px}*{box-sizing:border-box}html{background:var(--bg);scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font:inherit}.site-header{position:fixed;left:0;right:0;top:0;z-index:100}.frame-news{height:20px;background:#101012;color:var(--silver);font-size:12px}.bar-inner,.track-inner{width:min(var(--max),calc(100% - 32px));height:100%;margin:auto;display:flex;align-items:center;justify-content:space-between}.tiny-brand{white-space:nowrap}.text-button,.menu-button{border:0;background:transparent;color:var(--silver);cursor:pointer;min-height:44px;padding:0 10px}.frame-news .text-button{min-height:20px}.brand-bar{height:54px;background:var(--bg);border-bottom:1px solid var(--line2)}.brand-home{display:flex;align-items:center;font-size:16px;font-weight:700;min-height:44px}.logo{display:block;height:24px;width:auto;max-width:150px;object-fit:contain}.brand-actions{display:flex;align-items:center;gap:8px}.app-link,.menu-button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 12px;border-radius:7px}.app-link{background:linear-gradient(135deg,#6A8AAA 0%,#3A4A5A 100%);color:#F2F2F4}.menu-button{border:1px solid var(--line);background:var(--panel);color:var(--title)}.frame-track{height:42px;background:var(--panel)}.track-inner{justify-content:center;gap:8px}.track-inner a{min-width:86px;text-align:center;padding:7px 18px;border-radius:6px;color:var(--silver)}.track-inner a.active,.track-inner a:hover{background:var(--blue);color:#fff}.page-shell{padding-top:136px;padding-bottom:24px;min-height:70vh}.page{width:min(var(--max),calc(100% - 32px));margin:0 auto}.hero{padding:46px 0 32px;border-bottom:1px solid var(--line)}.hero .eyebrow{color:var(--blue);font-weight:700;letter-spacing:.08em}.hero-number{font-size:72px;line-height:1;color:var(--blue);font-weight:800;opacity:.78}.hero h1{margin:10px 0 8px;color:var(--title);font-size:24px;line-height:1.3}.hero .lead{font-size:18px;color:var(--silver);margin:0 0 10px}.hero p{max-width:760px;margin:0 0 18px}.button-row{display:flex;gap:10px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 18px;border-radius:7px;background:linear-gradient(135deg,#6A8AAA 0%,#3A4A5A 100%);color:#fff}.btn.secondary{background:transparent;border:1px solid var(--silver);color:var(--silver)}.section{padding:34px 0;border-bottom:1px solid var(--line)}.section h2{font-size:20px;line-height:1.35;color:var(--title);margin:0 0 14px}.section h3{font-size:16px;color:var(--title);margin:0 0 8px}.section p{margin:0 0 12px}.quote-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px}.quote-card,.gray-card,.info-card,.status-card,.faq-item,.memo-card,.topic-card{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:20px}.quote-card{border-left:3px solid var(--blue)}.stack{display:grid;gap:14px}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}.film-strip{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;padding:12px;background:var(--deep);border:1px solid var(--line);border-radius:8px}.film-cell{min-height:96px;border:1px dashed var(--line2);border-radius:5px;display:flex;align-items:center;justify-content:center;color:var(--dim);padding:8px;text-align:center}.film-cell.has-image{border-style:solid;padding:0;overflow:hidden}.film-cell img{max-width:100%;max-height:148px;width:auto;height:auto;object-fit:contain;display:block}.content-image{margin:14px 0 0;text-align:center}.content-image img{display:block;max-width:100%;width:auto;height:auto;max-height:260px;object-fit:contain;margin:0 auto}.banner-image img{max-height:200px}.app-image img{max-height:320px}.icon-image img{width:48px;height:48px;object-fit:contain}.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.timeline article{background:var(--panel);padding:18px;border-top:2px solid var(--blue);border-radius:6px}.status-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.status-card b{display:block;color:var(--silver);margin-bottom:6px}.center-product{text-align:center;max-width:720px;margin:0 auto}.center-product .content-image{margin:0 auto 14px}.center-product p{text-align:left}.article-layout .section{max-width:820px}.article-layout .section:nth-child(even){margin-left:auto}.article-layout .section:nth-child(odd){margin-right:auto}.numbered-intro{display:grid;grid-template-columns:100px 1fr;gap:20px;align-items:start}.numbered-intro .big-no{font-size:64px;color:var(--blue);font-weight:800;line-height:1}.method-list{counter-reset:method}.method-list article{counter-increment:method;position:relative;padding-left:54px}.method-list article:before{content:counter(method,decimal-leading-zero);position:absolute;left:18px;top:16px;color:var(--blue);font-weight:800}.terms{display:grid;gap:14px}.terms article{border-left:2px solid var(--blue);padding:4px 0 4px 16px}.site-footer{background:#101012;border-top:1px solid var(--line);color:var(--silver);padding:34px 0 84px;font-size:13px}.footer-inner{width:min(var(--max),calc(100% - 32px));margin:auto}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:24px}.footer-brand div{display:flex;flex-direction:column}.footer-brand span{color:var(--muted);font-size:12px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.footer-grid h3{font-size:13px;color:var(--title);margin:0 0 8px}.footer-grid a{display:block;padding:3px 0;color:var(--muted)}.footer-note{margin-top:24px;max-width:760px;color:var(--muted)}.copyright{color:var(--dim)}.overlay{position:fixed;inset:0;background:rgba(0,0,0,.64);z-index:180;opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.modal,.search-panel{z-index:190;opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.modal.is-open,.search-panel.is-open{opacity:1;visibility:visible;pointer-events:auto}.menu-modal{position:fixed;left:50%;top:50%;transform:translate(-50%,-48%);width:min(640px,92vw);max-height:78vh;overflow:auto;background:var(--panel);border:1px solid var(--line2);border-radius:10px;box-shadow:var(--shadow);padding:18px}.menu-modal.is-open{transform:translate(-50%,-50%)}.modal-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:14px}.modal-head button{min-height:44px;border:1px solid var(--line);background:var(--panel2);color:var(--title);border-radius:7px;padding:0 14px;cursor:pointer}.modal-brand{display:flex;align-items:center;gap:10px}.menu-groups{display:grid;grid-template-columns:1fr 1fr;gap:14px}.menu-groups>div{background:var(--deep);border-radius:8px;padding:12px}.menu-groups h3{margin:0 0 8px;font-size:13px;color:var(--silver)}.menu-groups a{display:block;border-top:1px solid var(--line);padding:8px 0}.menu-groups a:first-of-type{border-top:0}.menu-groups b,.menu-groups span{display:block}.menu-groups b{color:var(--title);font-size:14px}.menu-groups span{color:var(--muted);font-size:12px}.search-panel{position:fixed;top:74px;left:50%;transform:translateX(-50%);width:min(var(--max),calc(100% - 32px));background:var(--panel);border:1px solid var(--line2);border-radius:0 0 10px 10px;box-shadow:var(--shadow);padding:18px}.search-inner p{margin:2px 0 0;color:var(--muted)}.search-links{display:flex;gap:10px;flex-wrap:wrap}.search-links a{min-height:44px;padding:9px 14px;border:1px solid var(--line);border-radius:7px;background:var(--deep)}body.locked{overflow:hidden}.mobile-nav{display:none}a:focus-visible,button:focus-visible{outline:2px solid var(--silver);outline-offset:3px}.faq-list{display:grid;gap:12px}.faq-item h3{margin-bottom:6px}.tagline{color:var(--muted)}@media(max-width:700px){.frame-track{display:none}.page-shell{padding-top:74px;padding-bottom:64px}.bar-inner{width:calc(100% - 24px)}.brand-actions{gap:4px}.app-link,.menu-button{padding:0 9px}.quote-pair,.two-col,.timeline,.status-row,.footer-grid,.menu-groups{grid-template-columns:1fr}.film-strip{grid-template-columns:1fr 1fr}.film-cell{min-height:74px}.hero{padding-top:32px}.hero-number{font-size:54px}.numbered-intro{grid-template-columns:1fr}.mobile-nav{position:fixed;display:grid;grid-template-columns:repeat(4,1fr);left:0;right:0;bottom:0;z-index:120;min-height:48px;padding-bottom:env(safe-area-inset-bottom);background:#101012;border-top:1px solid var(--line2)}.mobile-nav a{display:flex;align-items:center;justify-content:center;min-height:48px;color:var(--silver)}.site-footer{padding-bottom:86px}.search-panel{top:0;left:0;right:0;bottom:0;width:100%;transform:none;border-radius:0;overflow:auto}.menu-modal{max-height:84vh}.content-image img{max-height:220px}.app-image img{max-height:300px}.banner-image img{max-height:180px}.footer-grid{gap:12px}.footer-grid>div{border-top:1px solid var(--line);padding-top:10px}}
