:root{--paper:#F3F8FD;--deep:#DCEAF6;--white:#FFFFFF;--navy:#0E3A5C;--text:#24384C;--muted:#5A7388;--soft:#7A93A8;--sky:#5BA3D0;--tide:#3D7EA6;--mist:#C5E4F5;--sand:#E8C9A0;--line:rgba(14,58,92,.12);--shadow:0 14px 34px rgba(14,58,92,.10);--radius:12px;--max:1120px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;line-height:1.75;overflow-x:hidden}body.panel-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}img{display:block;max-width:100%}.shell{width:min(calc(100% - 32px),var(--max));margin:0 auto}.site-header{position:fixed;inset:0 0 auto;z-index:60}.tide-line{height:8px;background:var(--tide);color:#fff;overflow:visible}.tide-line-inner{height:8px;display:flex;align-items:center;justify-content:space-between;font-size:9px;line-height:1;transform:translateY(0)}.tide-line-inner>span{white-space:nowrap}.text-tool{border:0;background:var(--tide);color:#fff;min-height:28px;padding:0 10px;cursor:pointer;border-radius:0 0 8px 8px}.tide-stage{height:50px;background:#fff;border-bottom:1px solid var(--mist)}.tide-stage-inner{height:50px;display:flex;align-items:center;justify-content:space-between}.brand{display:inline-flex;align-items:center;min-height:44px}.brand-logo{height:26px;width:auto;object-fit:contain}.brand-fallback{font-weight:800;color:var(--navy);letter-spacing:.04em}.stage-actions{display:flex;align-items:center;gap:8px}.stage-button{min-height:44px;padding:0 15px;border:1px solid var(--sky);background:#fff;color:var(--navy);border-radius:10px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.stage-button-primary{background:var(--tide);color:#fff;border-color:var(--tide)}.tide-bridge{height:64px;background:var(--mist);border-bottom:1px solid rgba(255,255,255,.7)}.bridge-grid{height:64px;display:grid;grid-template-columns:repeat(5,1fr)}.bridge-grid a{display:flex;align-items:center;justify-content:center;color:var(--navy);font-weight:700;border-right:1px solid rgba(255,255,255,.9)}.bridge-grid a:first-child{border-left:1px solid rgba(255,255,255,.9)}.bridge-grid a.active{background:#fff}.page-main{padding-top:122px}.hero,.page-hero{padding:36px 0 22px}.hero-card,.content-card,.feature-card,.article-card,.info-strip{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.hero-card{overflow:hidden}.media-slot{background:linear-gradient(135deg,var(--deep),#fff);display:flex;align-items:center;justify-content:center;min-height:160px;border-bottom:1px solid var(--line)}.hero-media{height:min(200px,32vw);max-height:200px;width:100%;object-fit:contain;object-position:center}.hero-copy{padding:26px}.eyebrow{font-size:14px;color:var(--tide);font-weight:800;letter-spacing:.08em}.hero h1,.page-hero h1{margin:.2em 0 .45em;color:var(--navy);font-size:clamp(28px,4vw,32px);line-height:1.3}.lead{font-size:17px;color:var(--muted);max-width:820px}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn{min-height:44px;padding:9px 18px;border-radius:10px;border:1px solid var(--sky);display:inline-flex;align-items:center;justify-content:center;font-weight:700}.btn.primary{background:var(--tide);color:#fff;border-color:var(--tide)}.btn.secondary{background:#fff;color:var(--navy)}.section{padding:22px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:14px}.section-head h2,.content-card h2,.article-card h2{margin:0;color:var(--navy);font-size:24px}.section-head p{margin:0;color:var(--muted);max-width:620px}.three-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature-card{overflow:hidden}.feature-card .media-slot{min-height:150px}.feature-card img{width:100%;height:170px;object-fit:contain;object-position:center}.feature-card .copy{padding:18px}.feature-card h3{margin:0 0 8px;color:var(--navy);font-size:20px}.feature-card p{margin:0;color:var(--muted)}.feature-card 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h2{margin-top:1.5em}.article-card h2:first-child{margin-top:0}.article-card h3{color:var(--navy)}.article-card p{margin:.8em 0}.article-card ul,.article-card ol{padding-left:1.35em}.article-card li{margin:.55em 0}.side-card{align-self:start;position:sticky;top:144px;background:var(--deep);border-radius:var(--radius);padding:20px;border:1px solid var(--line)}.side-card h2{font-size:18px;color:var(--navy);margin-top:0}.side-card a{display:block;padding:10px 0;border-bottom:1px solid rgba(14,58,92,.12);color:var(--navy)}.side-card a:last-child{border-bottom:0}.article-image{margin:18px 0;background:var(--deep);border-radius:var(--radius);padding:14px}.article-image img{width:100%;height:180px;object-fit:contain;object-position:center}.app-image img{max-height:420px;width:100%;object-fit:contain}.faq-list{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px}.faq-item h2{font-size:19px;margin:0 0 8px;color:var(--navy)}.faq-item p{margin:0}.site-footer{background:var(--navy);color:var(--mist);padding:40px 0 76px}.footer-brand{display:flex;gap:12px;align-items:center;margin-bottom:24px}.footer-logo{height:26px;width:auto;object-fit:contain;filter:brightness(0) invert(1)}.footer-brand strong{display:block;color:#fff}.footer-brand span{font-size:12px}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.footer-grid h2{font-size:15px;color:#fff}.footer-grid a{display:block;color:var(--mist);padding:4px 0}.footer-note{margin-top:28px;color:var(--mist);max-width:900px}.copyright{font-size:13px;color:#fff}.overlay{position:fixed;inset:0;background:rgba(14,58,92,.38);z-index:70;opacity:0;pointer-events:none;transition:opacity .18s}.overlay.show{opacity:1;pointer-events:auto}.tide-bay,.search-panel{position:fixed;z-index:80;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-8px);transition:.18s 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span{display:block;color:var(--muted);font-size:12px;line-height:1.45}.search-panel{top:58px;left:max(16px,calc((100vw - min(calc(100vw - 32px),1120px))/2));width:440px;border-radius:0 0 12px 12px;padding-bottom:14px}.search-box{display:flex;gap:10px;align-items:center;padding:14px}.search-box span{font-weight:700;color:var(--navy)}.search-box input{width:100%;min-height:44px;border:1px solid var(--mist);border-radius:10px;padding:8px 12px;outline:none}.search-box input:focus{border-color:var(--tide);box-shadow:0 0 0 3px rgba(61,126,166,.15)}.search-links{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;padding:0 14px}.search-links a{background:var(--paper);padding:10px 12px;border-radius:10px;color:var(--navy)}.mobile-bottom{display:none}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(91,163,208,.45);outline-offset:2px}.btn:hover,.stage-button:hover{transform:translateY(-1px)}
@media (max-width:800px){.tide-bridge{display:none}.page-main{padding-top:58px}.shell{width:calc(100% - 32px)}.tide-line-inner{font-size:8px}.stage-actions{gap:6px}.stage-button{padding:0 11px}.three-grid,.bottom-grid{grid-template-columns:1fr}.split-card,.split-card.reverse{grid-template-columns:1fr}.split-card.reverse .split-media,.split-card.reverse .split-copy{order:initial}.split-media img,.feature-card img{height:165px}.article-layout{grid-template-columns:1fr}.side-card{position:static}.footer-grid{grid-template-columns:repeat(2,1fr)}.site-footer{padding-bottom:86px}.tide-bay{top:58px;width:calc(100% - 16px);height:62vh;max-height:none}.search-panel{top:58px;left:8px;right:8px;width:auto}.mobile-bottom{display:grid;position:fixed;z-index:55;left:0;right:0;bottom:0;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);grid-template-columns:repeat(5,1fr);background:#fff;border-top:1px solid var(--line)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:50px;color:var(--navy);font-weight:700;font-size:13px}.mobile-bottom a.active{background:var(--tide);color:#fff}.hero{padding-top:26px}.hero-copy,.article-card{padding:20px}.hero-media{height:180px}.section-head{display:block}.section-head p{margin-top:6px}.page-hero{padding-top:28px}}
@media (max-width:430px){.tide-line-inner>span{max-width:220px;overflow:hidden;text-overflow:ellipsis}.stage-button{font-size:13px;padding:0 9px}.footer-grid{grid-template-columns:1fr 1fr}.content-card{padding:20px}.hero h1,.page-hero h1{font-size:28px}}