:root{
--bg:#E7F4F8;--deep:#D7ECF2;--paper:#F3FAFC;--soft:#EAF6F9;--title:#163038;--text:#1F3C44;--muted:#4A6E78;--aux:#6A8C96;--blue:#7EB8E0;--cyan:#6EC9D4;--bay:#1A3A44;--white:#F3FAFC;--kelp:#5A8A6A;--line:rgba(26,58,68,.14);--focus:rgba(110,201,212,.50);--shadow:0 12px 28px rgba(22,48,56,.08);--max:1000px
}
*{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",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.skip-link{position:fixed;left:16px;top:-60px;background:var(--bay);color:var(--white);padding:8px 14px;z-index:1000;border-radius:8px}.skip-link:focus{top:8px}.shell-inner,.content-wrap{width:min(var(--max),calc(100% - 32px));margin:0 auto}.site-shell{position:fixed;inset:0 0 auto 0;z-index:100}.tide-brow{height:20px;background:var(--bay);color:var(--white);font-size:12px}.brow-inner{height:20px;display:flex;align-items:center;justify-content:space-between}.brand-mini{line-height:20px}.text-button{border:0;background:transparent;color:var(--white);padding:0 8px;height:20px}.bay-brand{height:54px;background:var(--blue);border-bottom:1px solid var(--cyan)}.brand-inner{height:54px;display:flex;align-items:center;justify-content:space-between}.logo-link{min-width:100px;display:flex;align-items:center;height:44px}.site-logo,.footer-logo{height:24px;width:auto;max-width:180px;object-fit:contain;object-position:center}.logo-fallback{font-size:16px;font-weight:800;color:var(--title)}.brand-actions{display:flex;align-items:center;gap:8px}.app-link,.menu-button,.close-button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:9px;padding:0 15px;font-size:14px}.app-link{background:linear-gradient(135deg,#7EB8E0 0%,#6EC9D4 100%);border:1px solid rgba(22,48,56,.18);color:var(--title);font-weight:700}.menu-button,.close-button{background:var(--white);border:1px solid var(--bay);color:var(--bay)}.coast-points{height:44px;background:var(--white);border-bottom:1px solid var(--line)}.point-inner{height:44px;display:flex;align-items:center;justify-content:center;gap:54px}.coast-point{min-width:74px;height:44px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--muted);font-size:13px;line-height:1.2}.point-dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);margin-bottom:4px}.coast-point.is-current{color:var(--bay);font-weight:700}.coast-point.is-current .point-dot{background:var(--bay)}.site-main{padding-top:118px;min-height:65vh}.section{padding:42px 0}.section + .section{border-top:1px solid var(--line)}h1,h2,h3{color:var(--title);margin:0 0 12px}h1{font-size:24px;line-height:1.3}h2{font-size:20px;line-height:1.35}h3{font-size:16px;line-height:1.4}p{margin:0 0 14px}.lead{font-size:16px;color:var(--muted)}.eyebrow{font-size:12px;letter-spacing:.08em;color:var(--kelp);font-weight:800;margin-bottom:8px}.muted{color:var(--muted)}.button-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.btn{min-height:42px;padding:0 18px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}.btn-primary{background:linear-gradient(135deg,#7EB8E0 0%,#6EC9D4 100%);color:var(--title);border:1px solid transparent}.btn-secondary{background:var(--white);color:var(--bay);border:1px solid var(--bay)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.media-slot{background:var(--deep);border:1px solid var(--line);border-radius:10px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{display:block;max-width:100%;max-height:100%;object-fit:contain;object-position:center}.media-empty{width:100%;height:100%;background:linear-gradient(135deg,rgba(126,184,224,.18),rgba(110,201,212,.12))}.short-cover{height:188px}.banner-slot{height:200px}.app-shot{height:300px;max-width:360px;margin:0 auto}.icon-img{width:48px;height:48px;object-fit:contain}.panel{background:var(--paper);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow)}.soft-panel{background:var(--soft);border:1px solid var(--line);border-radius:10px}.intro-line{border-left:3px solid var(--cyan);padding-left:22px;max-width:760px}.intro-line .lead{max-width:720px}.stagger{display:grid;gap:26px}.stagger-item{max-width:790px}.stagger-item:nth-child(2){margin-left:auto}.stagger-copy{padding:18px 0}.note-stack{display:grid;gap:18px}.vertical-note{display:grid;grid-template-columns:110px 1fr;gap:22px;padding:22px;border-left:3px solid var(--cyan);background:var(--paper);border-radius:0 10px 10px 0}.vertical-note .note-mark{writing-mode:vertical-rl;letter-spacing:.18em;color:var(--kelp);font-weight:800;text-align:center}.rack-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;max-width:780px;margin:0 auto}.rack-card{text-align:center;padding:28px 24px}.periods{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.period{padding:22px;background:var(--paper);border:1px solid var(--line);border-radius:10px}.status-list{display:grid;gap:10px}.status-row{display:grid;grid-template-columns:120px 1fr auto;gap:16px;align-items:center;padding:14px 16px;background:var(--paper);border:1px solid var(--line);border-radius:9px}.status-badge{font-size:12px;padding:4px 9px;border-radius:999px;background:var(--deep);color:var(--bay)}.app-band{background:var(--bay);color:var(--white);border-radius:12px;padding:30px;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(250px,.75fr);gap:30px;align-items:center}.app-band h2,.app-band h3{color:var(--white)}.app-band p{color:#D9EEF2}.app-brandline{display:flex;align-items:center;gap:14px;margin-bottom:14px}.app-band .btn-secondary{background:var(--white)}.faq-mini{display:grid;grid-template-columns:1fr 1fr;gap:14px}.faq-mini article{padding:18px;background:var(--paper);border:1px solid var(--line);border-radius:9px}.brand-story{padding:28px;background:var(--deep);border-radius:10px}.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.feature-list article{padding:20px;background:var(--paper);border:1px solid var(--line);border-radius:10px}.page-head{padding:38px 0 26px}.page-head .lead{max-width:760px}.content-prose{max-width:820px}.content-prose p{margin-bottom:16px}.content-prose h2{margin-top:30px}.content-prose h3{margin-top:22px}.cross-list{display:grid;gap:26px}.cross-item{display:grid;grid-template-columns:minmax(220px,.8fr) minmax(0,1.2fr);gap:24px;align-items:center;padding:22px;border-bottom:1px solid var(--line)}.cross-item:nth-child(even){grid-template-columns:minmax(0,1.2fr) minmax(220px,.8fr)}.cross-item:nth-child(even) .cross-media{order:2}.cross-media{height:188px}.short-strip{padding:20px 0}.short-strip .short-cover{margin:18px 0 26px}.notebook-list{display:grid;gap:0;border-top:1px solid var(--line)}.notebook-entry{display:grid;grid-template-columns:84px 1fr;gap:22px;padding:24px 0;border-bottom:1px solid var(--line)}.notebook-entry .marker{writing-mode:vertical-rl;color:var(--kelp);font-weight:800;letter-spacing:.12em}.single-notes{max-width:780px}.single-note{padding:24px 0;border-bottom:1px solid var(--line)}.single-note:first-child{border-top:1px solid var(--line)}.memory-list{display:grid;gap:14px}.memory-item{padding:20px 22px;background:var(--paper);border-left:4px solid var(--cyan);border-radius:0 10px 10px 0}.method-flow{display:grid;gap:18px}.method-step{display:grid;grid-template-columns:56px 1fr;gap:18px;padding:20px;background:var(--paper);border:1px solid var(--line);border-radius:10px}.step-no{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--deep);font-weight:800;color:var(--bay)}.topic-list{display:grid;gap:14px}.topic-item{padding:22px;background:var(--paper);border:1px solid var(--line);border-radius:10px}.center-racks{max-width:760px;margin:0 auto;display:grid;gap:18px}.center-racks .panel{padding:28px;text-align:center}.terms{display:grid;gap:18px}.term-block{padding:22px;background:var(--paper);border:1px solid var(--line);border-radius:10px}.faq-list{display:grid;gap:12px}.faq-item{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:20px}.faq-item h2{font-size:17px}.contact-paths{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.contact-paths article{padding:22px;background:var(--paper);border:1px solid var(--line);border-radius:10px}.about-banner{margin:8px 0 28px}.site-footer{background:#143038;color:#E7F4F8;border-top:1px solid var(--cyan);padding:34px 0 74px}.footer-brand{display:flex;align-items:center;gap:14px;margin-bottom:24px}.footer-brand div{display:flex;flex-direction:column;line-height:1.35}.footer-brand strong{font-size:16px}.footer-brand span{font-size:12px;color:#BFDCE2}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:20px 0;border-top:1px solid rgba(110,201,212,.25);border-bottom:1px solid rgba(110,201,212,.25)}.footer-groups h2{font-size:13px;color:#E7F4F8}.footer-groups a{display:block;font-size:13px;color:#D4E8EC;padding:4px 0}.footer-note,.footer-copy{font-size:13px;color:#C6DFE4}.footer-note{margin-top:18px}.page-overlay{position:fixed;inset:0;background:rgba(22,48,56,.35);z-index:180;opacity:0;pointer-events:none;transition:opacity .18s}.page-overlay.is-visible{opacity:1;pointer-events:auto}.bay-menu{position:fixed;left:0;right:0;top:0;height:58vh;min-height:360px;z-index:220;background:var(--paper);transform:translateY(-105%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility 0s linear .22s;border-bottom:1px solid var(--cyan);box-shadow:0 22px 50px rgba(22,48,56,.18);overflow:auto}.bay-menu.is-open{transform:translateY(0);visibility:visible;pointer-events:auto;transition:transform .22s ease}.menu-head{position:sticky;top:0;background:var(--paper);display:flex;align-items:center;justify-content:space-between;padding:12px max(16px,calc((100vw - var(--max))/2));border-bottom:1px solid var(--line);z-index:2}.menu-brand{display:flex;align-items:center;gap:10px}.menu-groups{width:min(var(--max),calc(100% - 32px));margin:0 auto;padding:20px 0 30px;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.menu-groups h2{font-size:14px}.menu-groups a{display:block;padding:9px 0;border-bottom:1px solid var(--line)}.menu-groups strong,.menu-groups span{display:block}.menu-groups span{font-size:12px;color:var(--muted)}.search-layer{position:fixed;z-index:210;left:0;right:0;top:74px;visibility:hidden;pointer-events:none;transform:translateY(-12px);opacity:0;transition:.18s}.search-layer.is-open{visibility:visible;pointer-events:auto;transform:none;opacity:1}.search-card{width:min(720px,calc(100% - 32px));margin:0 auto;background:var(--paper);border:1px solid var(--line);border-radius:0 0 12px 12px;box-shadow:var(--shadow);padding:22px}.search-head{display:flex;justify-content:space-between;align-items:center;gap:16px}.search-card label{display:block;color:var(--muted);margin-bottom:8px}.search-card input{width:100%;height:46px;border:1px solid var(--line);border-radius:9px;background:white;padding:0 14px;color:var(--bay)}.search-presets{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.search-presets a{min-height:44px;padding:0 14px;border-radius:8px;display:inline-flex;align-items:center;background:var(--deep);color:var(--bay)}.search-empty{margin-top:14px;color:var(--muted)}.mobile-bottom{display:none}.panel-open{overflow:hidden}.hero-splitless{padding:26px 0}.compact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.compact-grid article{padding:18px;background:var(--paper);border:1px solid var(--line);border-radius:9px}
@media (max-width:760px){
body{padding-bottom:calc(48px + env(safe-area-inset-bottom))}.shell-inner,.content-wrap{width:calc(100% - 32px)}.coast-points{display:none}.site-main{padding-top:74px}.section{padding:32px 0}.site-logo{max-width:120px}.brand-actions{gap:4px}.app-link,.menu-button{padding:0 10px}.point-inner{gap:12px}.rack-cards,.periods,.feature-list,.faq-mini,.contact-paths,.compact-grid{grid-template-columns:1fr}.vertical-note{grid-template-columns:46px 1fr;gap:14px}.status-row{grid-template-columns:1fr auto}.status-row .status-desc{grid-column:1/-1}.app-band{grid-template-columns:1fr;padding:22px}.cross-item,.cross-item:nth-child(even){grid-template-columns:1fr;padding:18px 0}.cross-item:nth-child(even) .cross-media{order:0}.notebook-entry{grid-template-columns:44px 1fr}.method-step{grid-template-columns:44px 1fr}.footer-groups{grid-template-columns:repeat(2,1fr)}.site-footer{padding-bottom:84px}.menu-groups{grid-template-columns:1fr 1fr}.bay-menu{height:58vh}.search-layer{top:0;bottom:0;background:var(--bay);padding:18px 0}.search-card{height:100%;border-radius:0;background:var(--bay);color:var(--white);border:0;box-shadow:none}.search-card h2,.search-card label,.search-empty{color:var(--white)}.search-card .close-button{background:var(--white)}.mobile-bottom{position:fixed;display:grid;grid-template-columns:repeat(4,1fr);left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--paper);border-top:1px solid var(--line);z-index:140}.mobile-bottom a{display:flex;align-items:center;justify-content:center;font-size:13px;min-height:48px}.mobile-bottom a.is-current{background:var(--cyan);color:var(--bay);font-weight:800}.menu-groups span{font-size:11px}.short-cover{height:176px}.app-shot{height:280px}.banner-slot{height:200px}
}
@media (max-width:420px){.brand-mini{font-size:11px}.app-link{font-size:13px;padding:0 8px}.menu-button{font-size:13px;padding:0 9px}.menu-groups{grid-template-columns:1fr}.footer-groups{grid-template-columns:1fr 1fr}.brow-inner{gap:8px}.intro-line{padding-left:16px}}