:root{--bg:#EEF4FB;--deep:#D6E4F4;--card:#F7FAFD;--soft:#E4EEF8;--title:#141820;--text:#1E2834;--muted:#4A5A6E;--light:#6A7A8E;--red:#C81E2E;--blue:#4A7AB8;--navy:#1A2A44;--white:#F7FAFD;--border: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",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden;padding-top:118px}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.wrap{width:min(960px,calc(100% - 32px));margin:0 auto}.top-strip{position:fixed;z-index:50;top:0;left:0;right:0;height:20px;background:var(--navy);color:var(--white);font-size:12px}.top-strip-inner{height:20px;display:flex;align-items:center;justify-content:space-between}.text-search{border:0;background:transparent;color:var(--white);padding:0 8px;min-height:20px;cursor:pointer}.brand-bar{position:fixed;z-index:49;top:20px;left:0;right:0;height:54px;background:var(--white);border-bottom:1px solid var(--red)}.brand-row{height:54px;display:flex;align-items:center;justify-content:space-between}.brand-link{display:flex;align-items:center;min-height:44px}.brand-logo,.footer-logo,.menu-logo{display:block;height:24px;width:auto;max-width:120px;object-fit:contain;object-position:center}.brand-fallback{font-size:16px;font-weight:800;color:var(--navy)}.brand-actions{display:flex;gap:8px;align-items:center}.header-app,.menu-btn,.btn-primary,.btn-secondary{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 16px;border-radius:8px;font-size:14px;transition:.22s ease;cursor:pointer;white-space:nowrap}.header-app,.btn-secondary{background:var(--white);border:1px solid var(--red);color:var(--text)}.menu-btn,.btn-primary{border:1px solid transparent;background:linear-gradient(135deg,var(--navy) 0%,var(--red) 100%);color:var(--white);box-shadow:0 0 0 0 rgba(200,30,46,0)}.menu-btn:hover,.menu-btn:focus-visible,.btn-primary:hover,.btn-primary:focus-visible,.dot-link.is-current:hover,.dot-link.is-current:focus-visible{box-shadow:0 0 18px rgba(200,30,46,.50),0 0 4px rgba(74,122,184,.35)}.menu-btn:active,.btn-primary:active{box-shadow:0 0 26px rgba(200,30,46,.75)}.header-app:hover,.btn-secondary:hover{background:var(--soft)}.dot-nav{position:fixed;z-index:48;top:74px;left:0;right:0;height:44px;background:var(--white);border-bottom:1px solid var(--border)}.dot-nav-inner{height:44px;display:flex;align-items:center;gap:28px}.dot-link{display:inline-flex;align-items:center;gap:8px;font-size:13px;min-height:44px}.dot{width:10px;height:10px;border:2px solid var(--blue);border-radius:50%;display:inline-block}.dot-link.is-current .dot{background:var(--red);border-color:var(--red);box-shadow:0 0 12px rgba(200,30,46,.65)}.site-main{min-height:60vh;padding:34px 0 64px}.page-shell{width:min(960px,calc(100% - 32px));margin:0 auto}.eyebrow{font-size:12px;color:var(--red);font-weight:700;letter-spacing:.08em}.hero-simple{padding:24px 0 26px}.hero-simple h1,.home-intro h1{font-size:24px;line-height:1.3;margin:8px 0 12px;color:var(--title)}h2{font-size:20px;line-height:1.4;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{font-size:16px;color:var(--muted);max-width:760px}.action-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.panel{background:var(--card);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow);padding:20px}.section-space{margin-top:22px}.image-slot{display:flex;align-items:center;justify-content:center;background:var(--white);border:1px solid var(--border);border-radius:8px;overflow:hidden}.image-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.ice-slot{width:280px;height:176px}.wide-slot{width:100%;height:168px}.mid-slot{width:100%;height:160px}.tall-slot{width:240px;height:320px}.banner-slot{width:100%;height:200px}.home-index{display:flex;gap:18px;flex-wrap:wrap;margin-bottom:14px}.home-index a{display:inline-flex;align-items:center;gap:7px;font-weight:700}.home-intro{padding:18px 0 8px}.home-intro .intro-copy{max-width:760px}.ice-cut{display:grid;grid-template-columns:280px 1fr;gap:24px;align-items:center;margin-top:26px}.cold-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px;margin-top:22px}.cold-grid .story{background:var(--card);border-top:3px solid var(--blue);padding:20px;border-radius:0 0 8px 8px}.door-pages{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:22px}.door-card{background:var(--white);border:1px solid var(--border);border-left:5px solid var(--red);padding:18px;border-radius:8px}.shelf-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}.shelf-card{background:var(--card);padding:18px;border:1px solid var(--border);border-radius:8px}.period-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.period{background:var(--soft);padding:16px;border-radius:8px;border:1px solid var(--border)}.status-list{display:grid;gap:10px}.status-item{display:grid;grid-template-columns:120px 1fr;gap:14px;align-items:center;background:var(--card);border:1px solid var(--border);padding:14px;border-radius:8px}.status-badge{display:inline-flex;align-items:center;justify-content:center;min-height:36px;border-radius:999px;background:var(--navy);color:var(--white);font-size:13px;padding:0 12px}.wrap-door{display:grid;grid-template-columns:1fr 240px;gap:24px;align-items:start}.wrap-door .body-copy{min-width:0}.note-list{display:grid;gap:12px}.note-item{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:16px}.center-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.center-card{text-align:center;background:var(--card);border:1px solid var(--border);border-radius:8px;padding:24px}.topic-list{display:grid;gap:14px}.topic{background:var(--card);border:1px solid var(--border);padding:18px;border-radius:8px}.read-more{margin-top:28px;border-top:1px solid var(--border);padding-top:18px}.read-more h2{font-size:18px}.read-links{display:flex;gap:10px;flex-wrap:wrap}.read-links a{background:var(--white);border:1px solid var(--border);padding:10px 14px;border-radius:8px}.terms section,.help-sections section{margin-top:18px;background:var(--card);border:1px solid var(--border);border-radius:8px;padding:18px}.faq-list{display:grid;gap:14px}.faq-item{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:18px}.faq-item h2{font-size:17px}.site-footer{background:var(--navy);color:var(--white);border-top:1px solid var(--red);padding:30px 0 80px}.footer-grid{display:grid;grid-template-columns:1.1fr 1.9fr;gap:28px}.footer-logo-row{display:flex;align-items:center;gap:10px;margin-bottom:14px}.footer-brand p{font-size:13px;color:var(--bg)}.footer-brand small{font-size:13px}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.footer-links h2{font-size:13px;color:var(--bg);margin-bottom:8px}.footer-links a{display:block;font-size:13px;color:var(--bg);padding:3px 0}.overlay{position:fixed;inset:0;z-index:80;background:rgba(20,24,32,.45);opacity:0;visibility:hidden;pointer-events:none;transition:.22s ease}.overlay.open{opacity:1;visibility:visible}.side-menu{position:fixed;z-index:90;left:16px;top:90px;width:300px;max-height:70vh;overflow:auto;background:var(--white);border:1px solid var(--border);border-radius:8px;box-shadow:0 18px 50px rgba(26,42,68,.20);transform:translateX(calc(-100% - 32px));visibility:hidden;pointer-events:none;transition:.22s ease}.side-menu.open{transform:translateX(0);visibility:visible;pointer-events:auto}.menu-head{position:sticky;top:0;background:var(--white);display:flex;align-items:center;justify-content:space-between;padding:14px;border-bottom:1px solid var(--border);z-index:2}.menu-brand{display:flex;align-items:center;gap:8px}.close-btn{min-width:44px;min-height:44px;border:1px solid var(--border);background:var(--white);color:var(--text);border-radius:8px;cursor:pointer}.menu-groups{padding:12px}.menu-groups section{padding:8px 0}.menu-groups h2{font-size:13px;color:var(--red);margin:0 0 6px}.menu-groups a{display:block;padding:10px;border-radius:8px}.menu-groups a:hover{background:var(--soft)}.menu-groups b,.menu-groups span{display:block}.menu-groups span{font-size:12px;color:var(--muted)}.search-panel{position:fixed;z-index:91;top:74px;left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transition:.22s ease}.search-panel.open{visibility:visible;pointer-events:auto;opacity:1}.search-card{width:min(720px,calc(100% - 32px));margin:12px auto;background:var(--white);border:1px solid var(--border);border-radius:8px;box-shadow:0 16px 38px rgba(26,42,68,.16);padding:18px}.search-head{display:flex;align-items:center;justify-content:space-between}.search-label{display:block;font-size:13px;color:var(--muted);margin:10px 0 6px}.search-card input{width:100%;min-height:44px;border:1px solid var(--border);border-radius:8px;padding:0 12px;background:#fff;color:var(--text)}.search-results{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}.search-results a{background:var(--soft);border-radius:8px;padding:10px 12px}.mobile-bottom{display:none}.split-feature{display:grid;grid-template-columns:1fr 1fr;gap:18px}.offset-stack{display:grid;grid-template-columns:.8fr 1.2fr;gap:18px}.method-steps{counter-reset:step;display:grid;gap:12px}.method-step{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:16px 16px 16px 58px;position:relative}.method-step:before{counter-increment:step;content:counter(step);position:absolute;left:16px;top:16px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--red);color:var(--white);font-weight:700}.legal-note{border-left:4px solid var(--red);background:var(--soft);padding:16px;border-radius:0 8px 8px 0}.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.contact-card{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:18px}.about-banner{margin:16px 0 22px}
@media(max-width:720px){body{padding-top:74px;padding-bottom:56px}.dot-nav{display:none}.site-main{padding-top:22px}.ice-cut,.cold-grid,.door-pages,.shelf-cards,.wrap-door,.split-feature,.offset-stack,.footer-grid,.contact-grid{grid-template-columns:1fr}.ice-slot{width:100%;max-width:280px}.period-row{grid-template-columns:1fr}.center-cards{grid-template-columns:1fr}.status-item{grid-template-columns:1fr}.footer-links{grid-template-columns:repeat(2,1fr)}.site-footer{padding-bottom:92px}.mobile-bottom{position:fixed;z-index:60;bottom:0;left:0;right:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--white);border-top:1px solid var(--border);display:grid;grid-template-columns:repeat(4,1fr)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:13px}.mobile-bottom a.is-current{background:var(--red);color:var(--white)}.side-menu{left:0;top:0;width:86%;max-height:100vh;height:100vh;border-radius:0}.search-panel{top:0;bottom:0;background:var(--navy);color:var(--white)}.search-card{width:100%;height:100%;margin:0;border:0;border-radius:0;background:var(--navy);color:var(--white);box-shadow:none;padding:24px 16px}.search-head strong{color:var(--white)}.search-card p,.search-label{color:var(--bg)}.search-results{grid-template-columns:1fr 1fr}.search-results a{background:rgba(247,250,253,.1);color:var(--white)}.search-card .close-btn{background:transparent;color:var(--white);border-color:rgba(247,250,253,.35)}.brand-actions{gap:6px}.header-app,.menu-btn{padding:0 12px}.wrap{width:min(100% - 32px,960px)}}