:root{
  --bg:#E7F4F8;--deep-bg:#D7ECF2;--content:#F3FAFC;--sub:#EAF6F9;
  --title:#163038;--text:#1F3C44;--muted:#4A6E78;--soft:#6A8C96;
  --blue:#7EB8E0;--cyan:#6EC9D4;--deep:#1A3A44;--white:#F3FAFC;--seaweed:#5A8A6A;
  --border:rgba(26,58,68,.14);--strong-border:rgba(110,201,212,.50);--shadow:0 12px 28px rgba(22,48,56,.08);
  --radius:10px;--max:1000px;--fixed-top:118px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","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}
img{display:block;max-width:100%;height:auto;object-fit:contain;object-position:center}
.shell{width:min(calc(100% - 32px),var(--max));margin-inline:auto}
.site-main{padding-top:calc(var(--fixed-top) + 28px);padding-bottom:72px;min-height:65vh}
.skip-link{position:fixed;left:16px;top:-60px;z-index:1000;background:var(--white);color:var(--deep);padding:10px 14px;border-radius:8px;box-shadow:var(--shadow)}
.skip-link:focus{top:10px}
.site-head{position:fixed;z-index:70;top:0;left:0;right:0;box-shadow:0 8px 24px rgba(22,48,56,.06)}
.tide-brow{height:20px;background:var(--deep);color:var(--white);font-size:12px;line-height:20px}
.brow-inner,.bay-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
.text-control{border:0;background:transparent;color:var(--white);font-size:12px;min-height:20px;padding:0 4px}
.bay-bar{height:54px;background:var(--blue);border-bottom:1px solid var(--strong-border)}
.brand-link{min-width:80px;display:inline-flex;align-items:center;min-height:44px}
.brand-logo{height:24px;width:auto;max-width:160px;object-fit:contain}
.brand-text{font-size:16px;font-weight:800;color:var(--deep)}
.bay-actions{display:flex;align-items:center;gap:8px}
.app-link,.bay-menu-btn{height:44px;min-width:72px;padding:0 14px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;white-space:nowrap}
.app-link{background:linear-gradient(135deg,#7EB8E0 0%,#6EC9D4 100%);border:1px solid rgba(22,48,56,.28);color:var(--title)}
.bay-menu-btn{border:1px solid var(--deep);background:var(--white);color:var(--deep)}
.shore-points{height:44px;background:var(--white);border-bottom:1px solid var(--border)}
.shore-inner{height:44px;display:flex;align-items:center;justify-content:center;gap:70px}
.shore-item{height:44px;min-width:60px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:13px;color:var(--muted);line-height:1.05;gap:4px}
.shore-item .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan)}
.shore-item.is-current{color:var(--deep);font-weight:800}.shore-item.is-current .dot{background:var(--deep)}
.overlay{position:fixed;inset:0;background:rgba(20,48,56,.36);z-index:80;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.is-locked{overflow:hidden}
.bay-panel{position:fixed;top:0;left:0;right:0;height:58vh;min-height:420px;background:var(--content);z-index:90;transform:translateY(-105%);visibility:hidden;pointer-events:none;transition:transform .26s ease,visibility .26s;border-bottom:2px solid var(--cyan);overflow:auto}
.bay-panel.is-open{transform:translateY(0);visibility:visible;pointer-events:auto}
.bay-panel-head{height:66px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}
.panel-brand{display:flex;align-items:center;gap:10px;color:var(--deep)}
.close-btn{min-height:44px;padding:0 14px;border:1px solid var(--deep);border-radius:9px;background:var(--white);color:var(--deep);font-weight:700}
.bay-panel-grid{display:grid;grid-template-columns:1.05fr 1.05fr .9fr 1.2fr;gap:20px;padding-block:20px 30px}
.panel-group h2{font-size:16px;color:var(--title);margin:0 0 10px}.panel-group a{display:block;padding:7px 0;border-bottom:1px solid var(--border)}
.panel-group strong{display:block;font-size:14px;color:var(--deep)}.panel-group span{display:block;font-size:12px;color:var(--muted);line-height:1.55;margin-top:2px}
.search-layer{position:fixed;z-index:95;top:74px;left:0;right:0;visibility:hidden;pointer-events:none;transform:translateY(-12px);opacity:0;transition:.2s}
.search-layer.is-open{visibility:visible;pointer-events:auto;transform:none;opacity:1}.search-card{width:min(calc(100% - 32px),760px);margin:0 auto;background:var(--white);border:1px solid var(--strong-border);box-shadow:var(--shadow);border-radius:0 0 12px 12px;padding:22px}
.search-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.search-head h2{margin:2px 0 0;font-size:20px;color:var(--title)}.eyebrow{margin:0;font-size:12px;color:var(--soft);letter-spacing:.08em}
.search-form label{display:block;margin:18px 0 8px;color:var(--muted);font-size:13px}.search-row{display:flex;gap:10px}.search-row input{flex:1;min-width:0;height:44px;border:1px solid var(--border);border-radius:9px;padding:0 12px;background:white;color:var(--text)}
.primary-btn,.secondary-btn,.text-link{min-height:44px;padding:0 18px;border-radius:9px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;white-space:nowrap}
.primary-btn{border:1px solid transparent;background:linear-gradient(135deg,#7EB8E0 0%,#6EC9D4 100%);color:var(--title)}.secondary-btn{background:var(--white);border:1px solid var(--deep);color:var(--deep)}.text-link{padding-inline:0;color:var(--seaweed)}
.preset-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.preset-links a{min-height:40px;padding:7px 12px;border:1px solid var(--border);border-radius:8px;background:var(--sub);color:var(--deep)}
.site-footer{background:#143038;color:#E7F4F8;border-top:1px solid var(--cyan);font-size:13px;padding:28px 0 20px}.footer-top{display:grid;grid-template-columns:210px 1fr;gap:34px}.footer-brand{display:flex;align-items:center;gap:12px}.footer-brand strong,.footer-brand span{display:block}.footer-brand span{font-size:12px;opacity:.78}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.footer-links h2{font-size:13px;margin:0 0 7px;color:#F3FAFC}.footer-links a{display:block;padding:3px 0;color:#D7ECF2}.footer-note{border-top:1px solid rgba(110,201,212,.3);margin-top:24px;padding-top:18px;color:#D7ECF2}.footer-note p{margin:4px 0}
.mobile-bottom{display:none}

/* shared typography and content */
h1,h2,h3{color:var(--title);line-height:1.3}.page-title{font-size:24px;margin:0 0 12px}.section-title{font-size:20px;margin:0 0 12px}.card-title{font-size:16px;margin:0 0 8px}.lead{color:var(--muted);font-size:15px;max-width:760px}.prose p{margin:0 0 1em}.prose ul,.prose ol{margin:0 0 1em;padding-left:1.2em}.prose li+li{margin-top:.35em}.muted{color:var(--muted)}.note{color:var(--soft);font-size:13px}.section{margin-top:38px}.section:first-child{margin-top:0}.surface{background:var(--content);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.media-slot{background:var(--deep-bg);border:1px solid var(--strong-border);border-radius:10px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain}
.btn-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.rule-line{height:1px;background:var(--border);margin:20px 0}
.kicker{font-size:12px;color:var(--seaweed);letter-spacing:.1em;margin:0 0 6px;font-weight:800}

/* homepage */
.home-intro{border-left:3px solid var(--cyan);padding:18px 20px;background:rgba(243,250,252,.68);border-radius:0 10px 10px 0}.home-intro .home-sentence{font-size:20px;color:var(--deep);font-weight:800;margin:5px 0 10px}.strip-cover{height:188px;margin-top:28px}.stagger{display:grid;gap:18px}.stagger-item{background:var(--content);border:1px solid var(--border);border-radius:10px;overflow:hidden}.stagger-media{height:190px;background:var(--deep-bg);display:flex;align-items:center;justify-content:center}.stagger-media img{height:100%;width:100%;object-fit:contain}.stagger-copy{padding:20px}.vertical-notes{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.vertical-note{min-height:280px;padding:18px;background:var(--content);border-top:3px solid var(--cyan);border-radius:10px;box-shadow:var(--shadow)}.vertical-note .note-media{height:120px;margin-bottom:14px}.rack-head{height:180px;margin-bottom:14px}.rack-cards{display:grid;grid-template-columns:repeat(2,minmax(0,380px));justify-content:center;gap:16px}.rack-card{padding:22px;text-align:center;background:var(--content);border:1px solid var(--border);border-radius:10px}.three-tides{display:grid;grid-template-columns:1fr 1.2fr;gap:18px;align-items:stretch}.three-tides .media-slot{min-height:260px}.tide-list{display:grid;gap:10px}.tide-list article{padding:16px 18px;background:var(--sub);border-left:3px solid var(--blue);border-radius:8px}.status-board{display:grid;grid-template-columns:180px 1fr;gap:18px}.status-board .media-slot{min-height:210px}.status-list{display:grid;gap:8px}.status-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:13px 16px;background:var(--content);border:1px solid var(--border);border-radius:9px}.status-tag{font-size:12px;font-weight:800;color:var(--deep);background:var(--deep-bg);padding:4px 8px;border-radius:99px}.app-band{display:grid;grid-template-columns:minmax(180px,270px) 1fr;gap:24px;align-items:center;background:var(--deep);color:var(--white);padding:26px;border-radius:12px}.app-band h2,.app-band h3{color:var(--white)}.app-visual{height:300px;background:rgba(243,250,252,.08);border:1px solid rgba(243,250,252,.18);border-radius:10px;display:flex;align-items:center;justify-content:center}.app-icon{width:48px;height:48px;margin-bottom:12px}.app-band .secondary-btn{background:var(--white)}.info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.info-card{padding:19px;background:var(--content);border:1px solid var(--border);border-radius:10px}.faq-six{display:grid;gap:10px}.faq-six details{background:var(--content);border:1px solid var(--border);border-radius:9px;padding:12px 15px}.faq-six summary{font-weight:800;color:var(--deep);cursor:pointer}.brand-story{padding:24px;background:var(--deep-bg);border-radius:12px;border:1px solid var(--strong-border)}

/* unique inner layouts */
.page-hero-line{border-left:3px solid var(--cyan);padding:15px 20px;background:var(--content);border-radius:0 10px 10px 0;margin-bottom:26px}.alternating-list{display:grid;gap:22px}.alternating-item{display:grid;grid-template-columns:1fr 1.05fr;gap:18px;align-items:center}.alternating-item:nth-child(even){grid-template-columns:1.05fr 1fr}.alternating-item:nth-child(even) .alt-media{order:2}.alt-media{min-height:210px}.alt-copy{padding:22px;background:var(--content);border-radius:10px;border:1px solid var(--border)}
.short-cover{height:188px;margin-bottom:24px}.scene-flow{display:grid;gap:12px}.scene-flow article{padding:18px;background:var(--content);border:1px solid var(--border);border-radius:10px}.scene-flow article:nth-child(2n){margin-left:8%}.scene-flow article:nth-child(3n){margin-right:8%}
.note-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;align-items:start}.note-columns article{padding:20px;background:var(--content);border-top:3px solid var(--blue);border-radius:10px;min-height:300px}.note-columns article:nth-child(2){margin-top:42px}.note-columns article:nth-child(3){margin-top:84px}.note-columns .media-slot{height:130px;margin-bottom:14px}
.single-notes{width:min(100%,760px);margin-inline:auto}.single-notes article{padding:20px 0;border-bottom:1px solid var(--border)}.single-notes article:first-child{padding-top:0}.single-notes .media-slot{height:230px;margin:14px 0}
.ten-day-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.ten-day-grid article{padding:20px;background:var(--content);border:1px solid var(--border);border-radius:10px}.ten-day-grid article:nth-child(2){background:var(--deep-bg)}.ten-day-grid .media-slot{height:170px;grid-column:1/-1}
.timeline-status{display:grid;gap:12px}.timeline-status article{display:grid;grid-template-columns:110px 1fr;gap:16px;padding:17px;background:var(--content);border:1px solid var(--border);border-radius:10px}.timeline-status .label{font-weight:800;color:var(--deep);padding-right:14px;border-right:2px solid var(--cyan)}
.memo-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.memo-list article{padding:20px;background:var(--content);border:1px solid var(--border);border-radius:10px}.memo-list .media-slot{height:190px;grid-column:1/-1}
.method-steps{counter-reset:method;display:grid;gap:14px}.method-steps article{counter-increment:method;padding:20px 20px 20px 72px;background:var(--content);border:1px solid var(--border);border-radius:10px;position:relative}.method-steps article:before{content:counter(method);position:absolute;left:20px;top:20px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--deep-bg);color:var(--deep);font-weight:800}
.topic-list{display:grid;gap:10px}.topic-list article{display:grid;grid-template-columns:160px 1fr;gap:18px;padding:18px;background:var(--content);border-bottom:2px solid var(--deep-bg);border-radius:8px}.topic-list h2{margin:0}
.center-racks{display:grid;grid-template-columns:repeat(2,minmax(0,410px));justify-content:center;gap:18px}.center-racks article{text-align:center;padding:26px;background:var(--content);border:1px solid var(--border);border-radius:12px}.center-racks .media-slot{height:180px;grid-column:1/-1}
.product-wide{background:var(--deep);color:var(--white);border-radius:12px;padding:28px;display:grid;grid-template-columns:260px 1fr;gap:26px;align-items:center}.product-wide h1,.product-wide h2{color:var(--white)}.product-wide .media-slot{height:310px;background:rgba(243,250,252,.08);border-color:rgba(243,250,252,.16)}.product-features{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:24px}.product-features article{background:var(--content);border:1px solid var(--border);border-radius:10px;padding:18px}.product-features article h2{margin-top:0}
.guide-stack{display:grid;gap:16px}.guide-stack article{padding:20px;background:var(--content);border-left:3px solid var(--blue);border-radius:0 10px 10px 0}.guide-stack article:nth-child(even){border-left-color:var(--seaweed)}
.terms{display:grid;gap:16px}.terms article{padding:20px;background:var(--content);border:1px solid var(--border);border-radius:10px}.terms article h2{margin-top:0}.terms aside{padding:18px;background:var(--deep-bg);border-radius:10px;color:var(--deep)}
.help-index{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.help-index article{padding:18px;background:var(--content);border:1px solid var(--border);border-radius:10px}
.faq-list{display:grid;gap:12px}.faq-list article{padding:19px 20px;background:var(--content);border:1px solid var(--border);border-radius:10px}.faq-list h2{font-size:16px;margin:0 0 8px}.faq-list p{margin:0;color:var(--muted)}
.contact-paths{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.contact-paths article{padding:20px;background:var(--content);border:1px solid var(--border);border-radius:10px}.contact-paths .route{display:inline-block;margin-top:8px;color:var(--seaweed);font-weight:800}
.about-banner{height:200px;margin-bottom:22px}.about-flow{display:grid;grid-template-columns:1fr .9fr;gap:18px}.about-copy{padding:22px;background:var(--content);border:1px solid var(--border);border-radius:10px}.about-brand-media{min-height:260px}.about-values{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.about-values article{padding:18px;background:var(--sub);border-radius:10px;border:1px solid var(--border)}

:focus-visible{outline:3px solid rgba(110,201,212,.72);outline-offset:3px}
a:hover,.text-control:hover,.bay-menu-btn:hover,.close-btn:hover{filter:brightness(.97)}

@media (max-width:760px){
  :root{--fixed-top:74px}.shell{width:calc(100% - 32px)}.site-main{padding-top:calc(var(--fixed-top) + 22px);padding-bottom:86px}.shore-points{display:none}.bay-inner{gap:10px}.brand-link{min-width:0;flex:1}.app-link,.bay-menu-btn{min-width:64px;padding-inline:10px}.bay-actions{gap:6px}.brand-logo{max-width:125px}
  .bay-panel{height:58vh;min-height:0}.bay-panel-grid{grid-template-columns:1fr 1fr;gap:16px}.panel-group:last-child{grid-column:1/-1}.panel-group a{padding:9px 0}.search-layer{top:0;bottom:0;background:var(--deep)}.search-card{width:100%;height:100%;border:0;border-radius:0;margin:0;background:var(--deep);color:var(--white);padding:22px 16px}.search-head h2,.search-head .eyebrow,.search-form label{color:var(--white)}.search-head .close-btn{background:var(--white)}.search-row{display:grid}.preset-links a{background:rgba(243,250,252,.08);color:var(--white);border-color:rgba(243,250,252,.18)}
  .footer-top{grid-template-columns:1fr}.footer-links{grid-template-columns:repeat(2,1fr)}.mobile-bottom{display:grid;position:fixed;z-index:75;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));grid-template-columns:repeat(4,1fr);background:var(--white);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom)}.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(--deep);font-weight:800}.overlay{z-index:80}
  .vertical-notes,.ten-day-grid,.note-columns,.about-values,.help-index{grid-template-columns:1fr}.vertical-note{min-height:0}.note-columns article:nth-child(2),.note-columns article:nth-child(3){margin-top:0}.rack-cards,.center-racks{grid-template-columns:1fr}.three-tides,.status-board,.app-band,.product-wide,.about-flow{grid-template-columns:1fr}.status-board .media-slot{min-height:180px}.info-grid,.memo-list,.contact-paths,.product-features{grid-template-columns:1fr}.alternating-item,.alternating-item:nth-child(even){grid-template-columns:1fr}.alternating-item:nth-child(even) .alt-media{order:0}.topic-list{display:grid}.topic-list article{grid-template-columns:1fr}.scene-flow article:nth-child(2n){margin-left:0}.scene-flow article:nth-child(3n){margin-right:0}.timeline-status article{grid-template-columns:1fr}.timeline-status .label{border-right:0;border-bottom:2px solid var(--cyan);padding:0 0 8px}.about-banner{height:160px}.app-band{padding:20px}.product-wide{padding:20px}.app-visual,.product-wide .media-slot{height:280px}
}
@media (max-width:460px){.bay-panel-grid{grid-template-columns:1fr}.panel-group:last-child{grid-column:auto}.footer-links{grid-template-columns:1fr 1fr;gap:16px}.status-row{align-items:flex-start;flex-direction:column}.search-row{grid-template-columns:1fr}.brow-inner{font-size:11px}.home-intro{padding:16px}}
.section-pad{padding:22px}
.padded-media{padding:22px}
.light-kicker{color:#D7ECF2}
.panel-group a{min-height:44px}
.preset-links a{min-height:44px;display:inline-flex;align-items:center}
.footer-links a{min-height:44px;display:flex;align-items:center}