:root{--bg:#E7F4F8;--deep:#D7ECF2;--panel:#F3FAFC;--secondary:#EAF6F9;--title:#163038;--text:#1F3C44;--muted:#4A6E78;--soft:#6A8C96;--blue:#7EB8E0;--cyan:#6EC9D4;--bay:#1A3A44;--white:#F3FAFC;--kelp:#5A8A6A;--border:rgba(26,58,68,.14);--focus:rgba(110,201,212,.50);--shadow:0 12px 28px rgba(22,48,56,.08);--radius:10px;}
*{box-sizing:border-box}html{scroll-behavior:smooth}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}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}.skip-link{position:fixed;left:16px;top:-60px;z-index:999;background:var(--white);padding:10px 14px;border-radius:8px}.skip-link:focus{top:8px}.site-header{position:fixed;z-index:80;inset:0 0 auto 0;box-shadow:0 6px 16px rgba(22,48,56,.04)}.tide-brow{height:20px;background:var(--bay);color:var(--white);font-size:12px}.top-inner,.brand-inner,.shore-inner,.footer-inner,.page-wrap{width:min(1000px,calc(100% - 32px));margin:0 auto}.top-inner{height:20px;display:flex;align-items:center;justify-content:space-between}.text-button{border:0;background:none;color:var(--white);padding:0 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var(--border)}.shore-inner{height:44px;display:flex;align-items:center;justify-content:center;gap:56px}.shore-item{font-size:13px;display:grid;place-items:center;line-height:1.1;min-width:56px}.shore-dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);display:block;margin-bottom:5px}.shore-item.active{color:var(--bay);font-weight:700}.shore-item.active .shore-dot{background:var(--bay)}.site-main{padding-top:118px;min-height:60vh}.page-wrap{padding:34px 0 56px}h1,h2,h3{color:var(--title);margin-top:0}h1{font-size:24px;line-height:1.3;margin-bottom:16px}h2{font-size:20px;line-height:1.4;margin-bottom:12px}h3{font-size:16px;line-height:1.45;margin-bottom:8px}p{margin:0 0 14px}.lead{font-size:16px;color:var(--muted);max-width:760px}.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--kelp);font-weight:800}.hero-line{border-left:3px solid var(--cyan);padding-left:18px;margin-bottom:24px}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn-primary,.btn-secondary{height:42px;padding:0 17px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,#7EB8E0 0%,#6EC9D4 100%);color:var(--title);border:1px solid rgba(26,58,68,.10);font-weight:700}.btn-secondary{background:var(--white);color:var(--bay);border:1px solid var(--bay)}a:hover,.text-button:hover,button:hover{filter:brightness(.98)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--focus);outline-offset:3px}.section{margin-top:28px}.surface{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.image-slot{background:var(--blue);border:1px solid var(--focus);border-radius:10px;display:flex;align-items:center;justify-content:center;overflow:hidden}.image-slot img{display:block;width:100%;height:100%;object-fit:contain;object-position:center}.strip-image{width:100%;height:188px}.banner-slot{width:100%;height:200px}.app-visual{height:min(320px,54vw);min-height:230px}.placeholder-slot:empty::before{content:"";display:block;width:34px;height:34px;border-radius:50%;border:1px solid rgba(26,58,68,.12);background:rgba(243,250,252,.38)}.alt-blocks{display:grid;gap:18px}.alt-card{padding:20px}.alt-card .image-slot{height:174px;margin-bottom:16px}.alt-card.reverse{display:flex;flex-direction:column}.alt-card.reverse .copy{order:1}.alt-card.reverse .image-slot{order:2;margin:8px 0 0}.note-stack{display:grid;gap:12px}.vertical-note{display:grid;grid-template-columns:48px 1fr;gap:16px;padding:18px}.vertical-note .index{writing-mode:vertical-rl;letter-spacing:.12em;color:var(--kelp);font-weight:800}.vertical-note .image-slot{height:160px;margin-bottom:14px}.center-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px}.center-card{text-align:center;padding:22px}.center-card .image-slot{height:160px;margin:0 auto 16px}.tide-three{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.tide-panel{padding:18px;background:var(--secondary);border:1px solid var(--border);border-radius:10px}.status-list{display:grid;gap:10px}.status-row{display:grid;grid-template-columns:1fr auto;gap:14px;padding:15px 16px;background:var(--panel);border:1px solid var(--border);border-radius:9px}.status-chip{font-size:12px;color:var(--bay);background:var(--deep);border-radius:999px;padding:3px 10px;align-self:start}.app-band{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;padding:24px;background:var(--deep);border:1px solid var(--focus);border-radius:12px}.app-title{display:flex;align-items:center;gap:12px}.app-icon{width:48px;height:48px;object-fit:contain}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.faq-item{padding:18px}.brand-story{padding:22px;background:var(--panel);border-radius:12px;border:1px solid var(--border)}.brand-story .image-slot{height:220px;margin:16px 0}.split-intro{display:grid;grid-template-columns:180px 1fr;gap:28px;align-items:start}.split-intro .rail{border-left:3px solid var(--cyan);padding-left:16px;color:var(--muted)}.short-cover{display:grid;gap:18px}.short-cover .cover-copy{max-width:780px}.method-list{display:grid;gap:16px}.method-row{padding:18px 20px;border-left:3px solid var(--cyan);background:var(--panel);border-radius:0 10px 10px 0}.memo-list{display:grid;gap:12px}.memo{padding:18px;border:1px dashed rgba(26,58,68,.24);background:var(--secondary);border-radius:10px}.topic-list{display:grid;gap:14px}.topic-row{display:grid;grid-template-columns:170px 1fr;gap:18px;padding:18px}.terms{display:grid;gap:14px}.term{padding:20px}.product-page-band{display:grid;grid-template-columns:1fr 300px;gap:24px;padding:24px}.checklist{display:grid;gap:10px}.check-item{padding:15px 16px;background:var(--panel);border:1px solid var(--border);border-radius:9px}.help-links{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.help-links a{padding:16px;background:var(--panel);border:1px solid var(--border);border-radius:9px}.site-footer{background:#143038;color:#E7F4F8;border-top:1px solid rgba(110,201,212,.45);font-size:13px}.footer-inner{padding:28px 0 76px}.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:20px}.footer-brand div{display:flex;flex-direction:column;line-height:1.25}.footer-brand span{font-size:11px;color:#BFD6DC}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.footer-groups h2{font-size:14px;color:#E7F4F8;margin-bottom:8px}.footer-groups a{display:block;color:#D6E7EA;margin:5px 0}.footer-note{margin-top:22px;color:#C3D9DE;max-width:850px}.copyright{color:#AFCBD1}.overlay{position:fixed;inset:0;background:rgba(20,48,56,.34);z-index:120;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.show{opacity:1;visibility:visible;pointer-events:auto}.bay-menu{position:fixed;left:0;right:0;top:0;height:58vh;min-height:430px;background:var(--white);z-index:130;transform:translateY(-104%);visibility:hidden;pointer-events:none;transition:transform .24s ease,visibility .24s;overflow:auto;border-bottom:1px solid var(--focus);box-shadow:var(--shadow)}.bay-menu.open{transform:translateY(0);visibility:visible;pointer-events:auto}.bay-menu-head,.bay-menu-grid{width:min(1000px,calc(100% - 32px));margin:0 auto}.bay-menu-head{height:64px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}.panel-brand{display:flex;align-items:center;gap:10px}.panel-close,.search-head button{min-height:44px;border:1px solid var(--bay);background:var(--white);color:var(--bay);border-radius:9px;padding:0 14px}.bay-menu-grid{display:grid;grid-template-columns:1.2fr 1.2fr .8fr 1.3fr;gap:22px;padding:20px 0 30px}.bay-menu-grid h2{font-size:14px}.bay-menu-grid a{display:block;padding:8px 0;border-bottom:1px solid var(--border)}.bay-menu-grid a b{display:block;font-size:14px}.bay-menu-grid a span{display:block;font-size:12px;color:var(--muted)}.search-layer{position:fixed;z-index:135;top:74px;left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transition:.2s}.search-layer.open{visibility:visible;pointer-events:auto;opacity:1}.search-card{width:min(760px,calc(100% - 32px));margin:0 auto;background:var(--white);border:1px solid var(--focus);border-radius:12px;padding:18px;box-shadow:var(--shadow)}.search-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.search-card label{display:block;color:var(--muted);margin-bottom:6px}.search-card 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@media (max-width:760px){.top-inner,.brand-inner,.footer-inner,.page-wrap{width:calc(100% - 32px)}.shore-points{display:none}.site-main{padding-top:74px;padding-bottom:56px}.brand-actions{gap:4px}.app-link,.bay-menu-button{padding:0 10px}.bay-menu{height:58vh;min-height:0}.bay-menu-grid{grid-template-columns:1fr 1fr;gap:14px;width:calc(100% - 32px);padding-bottom:24px}.search-layer{top:0;bottom:0;background:var(--bay)}.search-card{width:100%;height:100%;border:0;border-radius:0;margin:0;background:var(--bay);color:var(--white);padding:18px 16px}.search-card strong,.search-card label,.search-empty{color:var(--white)}.search-card input{background:var(--white);color:var(--bay)}.search-presets a{background:rgba(243,250,252,.1);border-color:rgba(243,250,252,.24);color:var(--white)}.search-head button{background:transparent;color:var(--white);border-color:rgba(243,250,252,.55)}.mobile-bottom{position:fixed;z-index:90;left:0;right:0;bottom:0;display:grid;grid-template-columns:repeat(4,1fr);min-height:48px;padding-bottom:env(safe-area-inset-bottom);background:var(--white);border-top:1px solid var(--border)}.mobile-bottom a{min-height:48px;display:flex;align-items:center;justify-content:center;font-size:13px}.mobile-bottom a.active{background:var(--cyan);color:var(--bay);font-weight:800}.center-cards,.faq-grid,.tide-three,.app-band,.product-page-band,.split-intro,.topic-row,.help-links{grid-template-columns:1fr}.app-band,.product-page-band{padding:18px}.app-visual{height:300px}.footer-groups{grid-template-columns:1fr 1fr}.footer-inner{padding-bottom:88px}.shore-inner{gap:18px}.page-wrap{padding-top:26px}.topic-row{gap:8px}.banner-slot{height:200px}.brand-story .image-slot{height:190px}.vertical-note{grid-template-columns:34px 1fr}}
@media (max-width:420px){.brand-logo{max-width:120px}.brand-fallback{font-size:15px}.bay-menu-grid{grid-template-columns:1fr}.footer-groups{grid-template-columns:1fr 1fr}.center-card{padding:18px}.status-row{grid-template-columns:1fr}.status-chip{justify-self:start}}