:root{--bg:#E7F4F8;--deep-bg:#D7ECF2;--content:#F3FAFC;--sub:#EAF6F9;--title:#163038;--text:#1F3C44;--muted:#4A6E78;--soft:#6A8C96;--blue:#7EB8E0;--cyan:#6EC9D4;--bay:#1A3A44;--white:#F3FAFC;--moss:#5A8A6A;--border:rgba(26,58,68,.14);--focus:rgba(110,201,212,.50);--shadow:0 12px 28px rgba(22,48,56,.08)}
*{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","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}a{color:inherit;text-decoration:none}button{font:inherit}.content-wrap,.top-shell{width:min(1000px,calc(100% - 32px));margin:0 auto}.site-header{position:fixed;inset:0 0 auto 0;z-index:50}.tide-brow{height:20px;background:var(--bay);color:var(--white);font-size:12px}.tide-brow .top-shell{height:20px;display:flex;align-items:center;justify-content:space-between}.text-button,.menu-button,.panel-close,.search-head button{border:0;background:transparent;color:inherit;cursor:pointer;min-height:40px;padding:0 10px}.tide-brow .text-button{min-height:20px;font-size:12px}.bay-brand{height:54px;background:var(--blue);border-bottom:1px solid 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var(--border)}.shore-list{height:44px;display:flex;align-items:center;justify-content:center;gap:62px}.shore-item{min-width:58px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:13px;color:var(--muted);min-height:44px}.shore-dot{width:6px;height:6px;border-radius:50%;background:var(--cyan)}.shore-item.is-current{color:var(--bay);font-weight:800}.shore-item.is-current .shore-dot{background:var(--bay)}.site-main{padding-top:118px;min-height:70vh}.hero-line,.section-block,.page-head,.paper-block,.terms-block,.note-list,.status-list,.topic-list,.faq-list,.contact-grid{width:min(1000px,calc(100% - 32px));margin-left:auto;margin-right:auto}.hero-line{margin-top:34px;margin-bottom:28px;padding:10px 0 10px 22px;border-left:3px solid 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article{background:var(--content);border:1px solid var(--border);border-radius:10px;padding:18px}.topic-list{display:grid;gap:12px;margin-bottom:28px}.topic-list article{background:var(--content);border-radius:10px;border:1px solid var(--border);padding:18px;display:grid;grid-template-columns:150px 1fr;gap:18px}.shelf-grid{width:min(820px,calc(100% - 32px));margin:0 auto 30px;display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.shelf-card{background:var(--content);border:1px solid var(--border);border-radius:10px;padding:20px;text-align:center}.shelf-card p{text-align:left}.product-page{width:min(1000px,calc(100% - 32px));margin:28px auto;display:grid;grid-template-columns:1.4fr .6fr;gap:22px;background:var(--bay);padding:24px;border-radius:12px;color:var(--white)}.product-page h1,.product-page h2,.product-page h3{color:var(--white)}.product-page .media-slot{background:rgba(243,250,252,.08);border-color:rgba(243,250,252,.18)}.steps{width:min(900px,calc(100% - 32px));margin:0 auto 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.25s}.bay-panel.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}.panel-head{height:62px;background:var(--blue);display:flex;align-items:center;justify-content:space-between;padding:0 max(16px,calc((100% - 1000px)/2));border-bottom:1px solid var(--focus)}.panel-brand{display:flex;align-items:center;gap:10px;color:var(--title)}.panel-close{color:var(--title);border:1px solid rgba(26,58,68,.2);border-radius:8px;min-width:64px}.panel-grid{width:min(1000px,calc(100% - 32px));margin:18px auto;display:grid;grid-template-columns:1.1fr 1.1fr .8fr 1.4fr;gap:18px;max-height:calc(58vh - 90px);overflow:auto;padding-bottom:18px}.panel-grid h2{font-size:14px;margin-bottom:7px}.panel-grid a{display:flex;flex-direction:column;padding:6px 0;border-bottom:1px solid var(--border)}.panel-grid strong{font-size:14px}.panel-grid span{font-size:12px;color:var(--muted)}.search-layer{position:fixed;top:74px;left:0;right:0;z-index:88;visibility:hidden;pointer-events:none;transform:translateY(-120%);transition:transform .2s,visibility .2s}.search-layer.is-open{visibility:visible;pointer-events:auto;transform:translateY(0)}.search-card{width:min(820px,calc(100% - 32px));margin:0 auto;background:var(--white);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:0 0 12px 12px;padding:18px}.search-head{display:flex;align-items:center;justify-content:space-between;color:var(--title)}.search-head button{color:var(--bay);border:1px solid var(--border);border-radius:8px}.search-presets{display:flex;flex-wrap:wrap;gap:8px}.search-presets a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;background:var(--deep-bg);border-radius:8px;color:var(--bay)}.mobile-bottom{display:none}.no-scroll{overflow:hidden}.legal-note{padding:14px 16px;background:var(--deep-bg);border-radius:8px;color:var(--bay);margin-top:12px}.small-divider{height:1px;background:var(--border);margin:16px 0}
@media(max-width:760px){.content-wrap,.top-shell,.hero-line,.section-block,.page-head,.paper-block,.terms-block,.note-list,.status-list,.topic-list,.faq-list,.contact-grid{width:calc(100% - 32px)}.shore-nav{display:none}.site-main{padding-top:74px;padding-bottom:62px}.shore-list{display:none}.hero-line{margin-top:24px}.vertical-notes,.period-page,.column-notes{grid-template-columns:1fr}.column-notes article:nth-child(2),.column-notes article:nth-child(3),.period-page article:nth-child(2),.period-page article:nth-child(3){margin-top:0;transform:none}.center-cards,.plain-points,.faq-mini,.contact-grid,.shelf-grid,.about-flow{grid-template-columns:1fr}.period-row,.product-page,.method-grid,.app-band{grid-template-columns:1fr}.period-copy{grid-template-columns:1fr}.state-item,.status-list article,.topic-list article{grid-template-columns:1fr;gap:8px}.split-entry{grid-template-columns:1fr}.split-entry:nth-child(even) .entry-media{order:0}.help-columns{column-count:1}.footer-links{grid-template-columns:1fr 1fr}.panel-grid{grid-template-columns:1fr 1fr;gap:14px;max-height:calc(58vh - 80px)}.bay-panel{height:58vh}.search-layer{top:0;bottom:0;background:var(--bay);padding-top:70px}.search-card{background:var(--bay);color:var(--white);border:0;box-shadow:none;border-radius:0}.search-head{color:var(--white)}.search-head button{color:var(--white);border-color:rgba(243,250,252,.35)}.search-presets a{background:var(--white);color:var(--bay)}.mobile-bottom{position:fixed;z-index:60;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(4,1fr);height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:var(--white);border-top:1px solid var(--border)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:48px;font-size:13px;color:var(--muted)}.mobile-bottom a.is-current{background:var(--cyan);color:var(--bay);font-weight:800}.site-footer{padding-bottom:82px}.app-visual{height:280px}.about-flow article:first-child{grid-column:auto}.page-head.centered{text-align:left}.cover-strip{height:168px}}
@media(max-width:460px){.brand-actions{gap:4px}.app-link,.menu-button{padding:0 9px}.footer-links{grid-template-columns:1fr 1fr}.panel-grid{grid-template-columns:1fr}.bay-panel{height:58vh}.panel-grid{max-height:calc(58vh - 78px)}h1{font-size:24px}h2{font-size:20px}.media-slot.short-visual{height:150px}}

.spaced-top{margin-top:16px}