:root{--bg:#F4FAFC;--paper:#FFFFFF;--soft:#E7F3F6;--ink:#0E3A46;--text:#24505A;--muted:#4A7380;--faint:#7A9AA4;--sea:#1A7F8F;--bright:#2BB3C4;--deep:#0F5B68;--border:rgba(26,127,143,.16);--shadow:0 14px 34px rgba(14,58,70,.08);--footer:#0E3A46;--footerText:#D4E8EC}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"Microsoft YaHei",sans-serif;font-size:16px;line-height:1.78;overflow-x:hidden}body.layer-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.shell{width:min(calc(100% - 32px),1180px);margin:auto}.skip-link{position:fixed;left:16px;top:-80px;z-index:999;background:#fff;color:var(--ink);padding:10px 14px;border:1px solid var(--border)}.skip-link:focus{top:12px}.site-header{position:fixed;left:0;right:0;top:0;z-index:120}.tide-line{height:22px;background:var(--deep);color:#fff;font-size:12px}.tide-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.top-search{border:0;background:transparent;color:#fff;padding:0 8px;min-height:22px}.lighthouse-bar{height:68px;background:#fff;border-bottom:1px solid var(--border)}.lighthouse-inner{height:68px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand-link{justify-self:start;display:flex;align-items:center;min-height:44px}.brand-logo{display:block;max-height:36px;max-width:190px;width:auto;height:auto;object-fit:contain}.brand-wordmark{font-size:22px;font-weight:900;color:var(--ink);letter-spacing:.04em}.tidebook-toggle,.header-app,.btn,.layer-close{min-height:44px;border:1px solid var(--border);border-radius:12px;padding:9px 16px;display:inline-flex;align-items:center;justify-content:center;white-space:nowrap}.tidebook-toggle{background:var(--soft);color:var(--deep)}.header-app,.btn.primary{background:linear-gradient(135deg,#2BB3C4 0%,#1A7F8F 55%,#0F5B68 100%);color:#fff;border-color:transparent}.header-app{justify-self:end}.shore-tabs{height:44px;background:var(--soft);border-bottom:1px solid var(--border)}.shore-tabs-inner{height:44px;display:flex;align-items:center;gap:8px;overflow-x:auto;scrollbar-width:none}.shore-tabs-inner::-webkit-scrollbar{display:none}.shore-link{padding:5px 11px;border-radius:8px;color:var(--muted);white-space:nowrap}.shore-link.is-current{background:var(--sea);color:#fff}.site-main{padding-top:150px;padding-bottom:32px}.section{margin:0 auto 28px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:14px}.eyebrow{margin:0 0 6px;color:var(--sea);font-size:13px;font-weight:800;letter-spacing:.12em}.section h1,.section h2,.section h3{color:var(--ink);line-height:1.3}.section h1{font-size:clamp(28px,4vw,32px);margin:0 0 14px}.section h2{font-size:22px;margin:0}.section h3{font-size:18px;margin:0 0 8px}.lead{font-size:17px;color:var(--muted);max-width:900px}.paper,.note-card,.mini-card,.faq-card,.status-card,.step-card,.index-card{background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);border-radius:16px}.paper{padding:24px}.hero{padding-top:6px}.hero-copy{padding:18px 4px 4px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0}.btn.secondary{background:#fff;color:var(--deep);border-color:rgba(26,127,143,.28)}.media-slot{background:var(--soft);border:1px solid var(--border);border-radius:18px;overflow:hidden;display:flex;align-items:center;justify-content:center;aspect-ratio:16/9}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-fallback{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(145deg,#fff 0%,#D7EEF2 100%);color:var(--deep);font-weight:800;letter-spacing:.06em}.media-slot.banner{max-height:320px}.media-slot.card-media{height:210px;aspect-ratio:auto}.media-slot.app-media{max-height:420px;aspect-ratio:3/4}.grid-2,.grid-3,.grid-4,.grid-6{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.grid-6{grid-template-columns:repeat(3,1fr)}.note-card,.mini-card,.status-card,.step-card,.index-card{padding:18px}.num{font-size:34px;line-height:1;color:var(--sea);font-weight:900}.tag{display:inline-flex;align-items:center;min-height:28px;padding:3px 10px;background:var(--soft);color:var(--deep);border-radius:8px;font-size:13px;font-weight:800}.interest-tags{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.interest-tag{padding:16px;border-radius:14px;color:#fff;background:var(--bright)}.interest-tag:nth-child(even){background:var(--deep)}.interest-tag strong{display:block}.interest-tag span{display:block;font-size:14px}.status-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.status-card strong{display:block;color:var(--deep);margin-bottom:6px}.step-list{display:grid;gap:12px}.step-card{display:grid;grid-template-columns:56px 1fr;gap:14px;align-items:start}.shelf{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.book{background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px;min-height:170px;box-shadow:var(--shadow);border-left:8px solid var(--sea)}.frame-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.frame-item{background:#fff;border:1px solid var(--border);border-radius:16px;padding:14px;box-shadow:var(--shadow)}.path-list{display:grid;gap:12px}.path-item{background:#fff;border:1px solid var(--border);border-left:6px solid var(--sea);border-radius:14px;padding:16px}.link-inline{color:var(--deep);font-weight:800;text-decoration:underline;text-underline-offset:3px}.app-layout{display:grid;grid-template-columns:minmax(240px,.75fr) 1.25fr;gap:24px;align-items:center}.brand-icon,.brand-icon-fallback{width:62px;height:62px;border-radius:16px;object-fit:contain;display:inline-flex;align-items:center;justify-content:center;background:var(--soft);color:var(--deep);font-weight:900}.faq-card{padding:0 18px}.faq-card details{border-bottom:1px solid var(--border)}.faq-card details:last-child{border-bottom:0}.faq-card summary{cursor:pointer;list-style:none;font-weight:800;color:var(--ink);padding:16px 0}.faq-card summary::-webkit-details-marker{display:none}.faq-card details p{margin:0 0 16px}.clause-list{display:grid;gap:14px}.clause{background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px}.clause h2{font-size:19px;margin:0 0 6px}.site-footer{background:var(--footer);color:var(--footerText);padding:36px 0 76px;margin-top:20px}.site-footer a{color:#fff}.footer-brand{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:center;padding-bottom:22px;border-bottom:1px solid rgba(255,255,255,.12)}.footer-brand .brand-wordmark{color:#fff}.footer-brand strong{display:block;color:#fff;font-size:20px}.footer-brand span{font-size:12px;letter-spacing:.12em}.footer-brand p{margin:4px 0 0}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding:24px 0}.footer-grid h2{font-size:14px;color:#fff}.footer-grid a{display:block;padding:4px 0}.footer-note{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;font-size:14px}.overlay{position:fixed;inset:0;background:rgba(14,58,70,.34);z-index:150;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.tidebook-panel{position:fixed;left:0;top:0;bottom:0;width:360px;max-width:86vw;background:#F4FAFC;z-index:170;box-shadow:18px 0 44px rgba(14,58,70,.16);overflow:auto;transform:translateX(-105%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s}.tidebook-panel.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.tidebook-inner{padding:18px 18px 28px}.tidebook-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-bottom:12px;border-bottom:1px solid var(--border)}.tidebook-brand{display:flex;align-items:center;gap:10px}.layer-close{background:#fff;color:var(--deep)}.tidebook-groups{display:grid;gap:18px;padding-top:16px}.tidebook-group h2{font-size:14px;color:var(--sea);margin:0 0 5px}.tidebook-group a{display:block;padding:9px 0;border-bottom:1px dashed var(--border)}.tidebook-group strong{display:block;color:var(--ink)}.tidebook-group span{display:block;color:var(--muted);font-size:13px;line-height:1.55}.search-layer{position:fixed;left:0;right:0;top:90px;z-index:165;visibility:hidden;pointer-events:none;opacity:0;transition:.2s}.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1}.search-card{background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);border-radius:0;padding:20px}.search-head{display:flex;justify-content:space-between;align-items:center}.search-field{display:block;margin:14px 0}.search-field span{display:block;color:var(--muted);font-size:13px}.search-field input{width:100%;height:48px;border:1px solid var(--border);border-radius:12px;padding:0 14px;color:var(--ink);background:var(--bg)}.search-links{display:flex;gap:10px;flex-wrap:wrap}.search-links a{background:var(--soft);color:var(--deep);padding:8px 12px;border-radius:10px}.search-hint{color:var(--faint);font-size:13px}.mobile-dock{display:none}.soft-band{background:var(--soft);padding:22px;border-radius:18px}.quote{font-size:18px;color:var(--ink);border-left:4px solid var(--sea);padding-left:16px}.hero .media-fallback span{font-size:clamp(18px,4vw,28px)}
@media(max-width:900px){.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3,.grid-6{grid-template-columns:repeat(2,1fr)}.interest-tags{grid-template-columns:repeat(2,1fr)}.shelf{grid-template-columns:repeat(2,1fr)}.app-layout{grid-template-columns:1fr}.media-slot.app-media{max-width:340px;margin:auto}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.shore-tabs{display:none}.site-main{padding-top:106px;padding-bottom:76px}.lighthouse-inner{grid-template-columns:minmax(0,1fr) auto auto;gap:8px}.brand-wordmark{font-size:18px}.brand-logo{max-width:130px}.tidebook-toggle,.header-app{padding:8px 11px}.grid-2,.grid-3,.grid-4,.grid-6,.interest-tags,.frame-grid{grid-template-columns:1fr}.shelf{grid-template-columns:1fr}.status-grid{grid-template-columns:repeat(2,1fr)}.section-head{align-items:start;flex-direction:column}.paper{padding:18px}.search-layer{top:0;bottom:0;background:var(--soft);padding-top:18px;overflow:auto}.search-card{width:calc(100% - 24px);margin:auto;border-radius:14px}.mobile-dock{position:fixed;display:grid;grid-template-columns:repeat(5,1fr);left:0;right:0;bottom:0;z-index:100;background:#fff;border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom)}.mobile-dock a{min-height:50px;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px}.mobile-dock a.is-current{background:var(--sea);color:#fff}.site-footer{padding-bottom:calc(82px + env(safe-area-inset-bottom))}.media-slot.card-media{height:195px}.step-card{grid-template-columns:46px 1fr}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}