:root{--bg:#EEF4FB;--deep:#D6E4F4;--card:#F7FAFD;--soft:#E4EEF8;--title:#141820;--text:#1E2834;--muted:#4A5A6E;--sub:#6A7A8E;--red:#C81E2E;--blue:#4A7AB8;--navy:#1A2A44;--white:#F7FAFD;--line:rgba(20,24,32,.12);--hot:rgba(200,30,46,.45);--shadow:0 12px 28px rgba(26,42,68,.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",sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%;object-fit:contain;object-position:center}.shell,.page-shell{width:min(960px,calc(100% - 32px));margin:0 auto}.site-header{position:fixed;top:0;left:0;right:0;z-index:40}.top-strip{height:20px;background:var(--navy);color:var(--white);font-size:12px}.top-strip .shell{display:flex;justify-content:space-between;align-items:center;height:20px}.text-button{border:0;background:none;color:inherit;padding:0 4px;cursor:pointer}.brand-row{height:54px;background:var(--white);border-bottom:1px solid var(--red)}.brand-inner{display:flex;align-items:center;justify-content:space-between;height:100%}.brand{display:inline-flex;align-items:center;min-height:44px;font-size:16px;font-weight:800}.brand img{height:24px;width:auto}.brand-actions{display:flex;align-items:center;gap:10px}.plain-link,.menu-button,.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 16px;border-radius:8px;font-size:14px;white-space:nowrap;transition:.22s ease}.plain-link{border:1px solid var(--red);background:var(--white)}.menu-button,.btn.primary{border:0;background:linear-gradient(135deg,#1A2A44 0%,#C81E2E 100%);color:var(--white);box-shadow:0 0 0 0 rgba(200,30,46,0);cursor:pointer}.menu-button:hover,.menu-button:focus-visible,.btn.primary:hover,.btn.primary:focus-visible,.quick-dot.is-current:hover{box-shadow:0 0 18px rgba(200,30,46,.50),0 0 4px rgba(74,122,184,.35)}.menu-button:active,.btn.primary:active{box-shadow:0 0 26px rgba(200,30,46,.75)}.quick-nav{height:44px;background:var(--white);border-bottom:1px solid var(--line)}.quick-inner{height:100%;display:flex;align-items:center;gap:28px}.quick-dot{display:inline-flex;align-items:center;gap:8px;min-height:44px;font-size:13px}.quick-dot span{width:10px;height:10px;border-radius:50%;border:2px solid var(--blue);display:block}.quick-dot.is-current span{border-color:var(--red);background:var(--red);box-shadow:0 0 18px rgba(200,30,46,.50),0 0 4px rgba(74,122,184,.35)}main{padding-top:118px}.page-shell{padding:36px 0 56px}h1{font-size:24px;line-height:1.3;color:var(--title);margin:0 0 16px}h2{font-size:20px;line-height:1.35;color:var(--title);margin:0 0 14px}h3{font-size:16px;color:var(--title);margin:0 0 8px}p{margin:0 0 14px}.eyebrow{font-size:12px;color:var(--red);font-weight:800;letter-spacing:.08em}.lead{font-size:16px;color:var(--muted);max-width:760px}.hero{padding:28px 0 30px;border-bottom:1px solid var(--line)}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.btn.secondary{border:1px solid var(--red);background:var(--white);color:var(--text)}.section{padding:30px 0;border-bottom:1px solid var(--line)}.section:last-child{border-bottom:0}.media-slot{background:var(--white);border:1px solid var(--line);border-radius:8px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain}.ice-slot{width:280px;height:176px}.wide-slot{width:100%;height:168px}.short-slot{width:100%;height:160px}.app-slot{width:240px;height:320px}.banner-slot{width:100%;height:200px}.two-cold{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}.cold-card,.door-card,.info-card,.center-card,.memo-item,.term-block,.faq-item,.related,.status-row{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:18px;box-shadow:var(--shadow)}.door-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.rack-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.phase-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.phase-grid>div{background:var(--soft);border-left:3px solid var(--red);border-radius:8px;padding:16px}.status-list{display:grid;gap:10px}.status-row{display:grid;grid-template-columns:140px 1fr auto;gap:14px;align-items:center}.status-tag{font-size:13px;color:var(--red);font-weight:800}.wrap-app{display:flex;gap:28px;align-items:flex-start}.wrap-app .copy{flex:1}.app-visual{width:240px;flex:0 0 240px}.app-icon{width:48px;height:48px;margin:0 0 12px auto}.app-icon img{width:48px;height:48px}.note-list{display:grid;gap:12px}.memo-item{border-left:3px solid var(--blue)}.method-flow{display:grid;grid-template-columns:1fr 1fr;gap:16px}.topic-list{display:grid;gap:14px}.topic-list article{padding:18px;background:var(--card);border-radius:8px;border:1px solid var(--line)}.center-stack{display:grid;gap:16px;max-width:760px;margin:0 auto}.terms{display:grid;gap:16px}.term-block h2{border-bottom:1px solid var(--hot);padding-bottom:9px}.faq-list{display:grid;gap:14px}.faq-item h2{font-size:16px}.related{margin-top:28px}.related-links{display:flex;flex-wrap:wrap;gap:10px}.related-links a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--line);border-radius:8px;background:var(--white)}.site-footer{background:var(--navy);color:var(--white);border-top:2px solid var(--red);padding:32px 0 76px;font-size:13px}.footer-grid{display:grid;grid-template-columns:1.3fr repeat(4,1fr);gap:24px}.footer-grid h2{font-size:14px;color:var(--white);margin-bottom:8px}.footer-grid a{display:block;padding:3px 0;color:#EEF4FB}.footer-brand{display:flex;flex-direction:column;gap:4px}.footer-brand img{width:auto;height:24px;align-self:flex-start}.footer-note{margin-top:24px;padding-top:16px;border-top:1px solid rgba(247,250,253,.2)}.copyright{margin-top:8px;color:#D6E4F4}.overlay{position:fixed;inset:0;background:rgba(20,24,32,.45);z-index:60;opacity:0;visibility:hidden;pointer-events:none;transition:.22s}.overlay.open{opacity:1;visibility:visible;pointer-events:auto}.drawer{position:fixed;left:0;top:20px;z-index:70;width:300px;max-height:70vh;overflow:auto;background:var(--card);border-radius:0 8px 8px 0;box-shadow:var(--shadow);transform:translateX(-102%);visibility:hidden;pointer-events:none;transition:.22s}.drawer.open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{position:sticky;top:0;background:var(--card);display:flex;align-items:center;justify-content:space-between;padding:14px;border-bottom:1px solid var(--line)}.drawer-head button,.search-head button{min-height:44px;border:1px solid var(--red);border-radius:8px;background:var(--white);cursor:pointer}.drawer-brand{display:flex;align-items:center;gap:8px}.drawer-brand img{height:24px;width:auto}.drawer-section{padding:12px 14px}.drawer-section h2{font-size:14px;margin-bottom:6px;color:var(--red)}.drawer-section a{display:block;padding:8px 0;border-bottom:1px solid var(--line)}.drawer-section a:last-child{border-bottom:0}.drawer-section b,.drawer-section span{display:block}.drawer-section span{color:var(--muted);font-size:12px}.search-panel{position:fixed;top:74px;left:0;right:0;z-index:75;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-8px);transition:.22s}.search-panel.open{opacity:1;visibility:visible;pointer-events:auto;transform:none}.search-card{width:min(620px,calc(100% - 32px));margin:0 auto;background:var(--white);border-radius:8px;padding:18px;box-shadow:var(--shadow)}.search-head{display:flex;align-items:center;justify-content:space-between}.preset-links{display:flex;flex-wrap:wrap;gap:8px}.preset-links a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--line);border-radius:8px}.locked{overflow:hidden}.mobile-bottom{display:none}.index-points{display:flex;gap:14px;margin-bottom:16px}.index-points a{display:inline-flex;align-items:center;gap:8px}.index-points i{width:10px;height:10px;border-radius:50%;border:2px solid var(--blue)}.index-points a:first-child i{background:var(--red);border-color:var(--red);box-shadow:0 0 14px rgba(200,30,46,.38)}.ice-cut{display:grid;grid-template-columns:280px 1fr;gap:22px;align-items:center}.ice-copy{padding:18px;background:linear-gradient(135deg,var(--soft),var(--card));border-radius:8px}.single-copy{max-width:760px}.brand-banner{margin-bottom:18px}.quote{border-left:3px solid var(--red);padding-left:14px;color:var(--muted)}
@media(max-width:700px){.quick-nav{display:none}main{padding-top:74px;padding-bottom:48px}.page-shell{padding-top:24px}.brand-actions{gap:6px}.plain-link,.menu-button{padding:0 10px}.two-cold,.door-grid,.rack-grid,.phase-grid,.method-flow,.footer-grid,.ice-cut{grid-template-columns:1fr}.ice-slot{width:100%;height:176px}.wrap-app{display:block}.app-visual{width:240px;margin:20px auto 0}.status-row{grid-template-columns:1fr}.drawer{top:0;width:86%;max-height:100vh;height:auto;border-radius:0 8px 8px 0}.search-panel{inset:0;background:var(--navy);top:0;display:flex;align-items:flex-start;padding-top:18px}.search-card{background:var(--navy);color:var(--white)}.search-card .search-head strong{color:var(--white)}.search-head button,.preset-links a{color:var(--white);background:transparent;border-color:rgba(247,250,253,.45)}.mobile-bottom{position:fixed;display:grid;grid-template-columns:repeat(4,1fr);left:0;right:0;bottom:0;z-index:45;min-height:48px;padding-bottom:env(safe-area-inset-bottom);background:var(--white);border-top:1px solid var(--line)}.mobile-bottom a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:13px}.mobile-bottom a.is-current{background:var(--red);color:var(--white)}.site-footer{padding-bottom:76px}.footer-grid{gap:16px}.footer-grid>div:not(.footer-brand){display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:10px}.footer-grid h2{grid-column:1/-1}.page-shell{width:min(100% - 32px,960px)}}