:root{--paper:#F3F8FD;--deep-bg:#DCEAF6;--white:#FFFFFF;--navy:#0E3A5C;--text:#24384C;--muted:#5A7388;--soft:#7A93A8;--sky:#5BA3D0;--tide:#3D7EA6;--mist:#C5E4F5;--sand:#E8C9A0;--border:rgba(14,58,92,.12);--shadow:0 14px 34px rgba(14,58,92,.10);--radius:12px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}body.modal-open{overflow:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button,input{font:inherit}.shell{width:min(1120px,calc(100% - 32px));margin:0 auto}.site-head{position:fixed;z-index:80;top:0;left:0;right:0}.tide-line{height:28px;background:var(--tide);color:#fff}.tide-line-inner{height:28px;display:flex;align-items:center;justify-content:space-between;font-size:12px}.plain-btn{appearance:none;border:0;background:transparent;color:#fff;cursor:pointer;min-height:28px;padding:0 8px}.plain-btn:hover,.plain-btn:focus-visible{text-decoration:underline;outline:2px solid #fff;outline-offset:-2px}.tide-platform{height:50px;background:#fff;border-bottom:1px solid var(--mist)}.tide-platform-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand-link{display:flex;align-items:center;min-width:0}.brand-logo{height:26px;width:auto;max-width:210px;object-fit:contain;object-position:left center}.brand-logo.small{height:24px}.brand-text{font-weight:800;color:var(--navy);font-size:19px;letter-spacing:.04em}.top-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}.primary-btn,.secondary-btn,.text-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;border-radius:10px;padding:9px 16px;font-weight:700;transition:.18s ease}.primary-btn{background:var(--tide);color:#fff;border:1px solid var(--tide)}.primary-btn:hover,.primary-btn:focus-visible{background:var(--navy);border-color:var(--navy);outline:3px solid rgba(91,163,208,.25)}.secondary-btn{background:#fff;color:var(--navy);border:1px solid var(--sky);cursor:pointer}.secondary-btn:hover,.secondary-btn:focus-visible{background:var(--mist);outline:3px solid rgba(91,163,208,.18)}.compact{min-height:40px;padding:7px 14px}.tide-bridge{height:64px;background:var(--mist);border-bottom:1px solid rgba(255,255,255,.9)}.tide-bridge-grid{display:grid;grid-template-columns:repeat(5,1fr);height:64px;padding:0}.tide-bridge a{display:flex;align-items:center;justify-content:center;border-right:1px solid rgba(255,255,255,.95);font-weight:700;color:var(--navy);min-width:0}.tide-bridge a:first-child{border-left:1px solid rgba(255,255,255,.95)}.tide-bridge a:hover,.tide-bridge a:focus-visible,.tide-bridge a.is-active{background:#fff;color:var(--navy);outline:none}.site-main{padding-top:166px;min-height:70vh}.page-overlay{position:fixed;z-index:85;inset:0;background:rgba(14,58,92,.42);opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.page-overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.tide-bay{position:fixed;z-index:90;top:78px;left:0;width:300px;height:min(480px,calc(100vh - 96px));background:#fff;border:1px solid var(--border);border-left:0;border-radius:0 0 12px 0;box-shadow:var(--shadow);visibility:hidden;opacity:0;pointer-events:none;transform:translateY(-8px);transition:.2s}.tide-bay.is-open{visibility:visible;opacity:1;pointer-events:auto;transform:none}.bay-head{height:62px;padding:0 16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}.bay-brand{display:flex;align-items:center;gap:10px;color:var(--navy)}.icon-close{border:0;background:var(--paper);color:var(--navy);width:44px;height:44px;border-radius:10px;cursor:pointer;font-size:24px;line-height:1}.icon-close:hover,.icon-close:focus-visible{background:var(--mist);outline:2px solid var(--sky)}.bay-scroll{height:calc(100% - 62px);overflow:auto;padding:14px 16px 24px}.bay-group{margin-bottom:18px}.bay-group h2{font-size:13px;color:var(--soft);letter-spacing:.08em;margin:0 0 8px}.bay-group a{display:block;padding:8px 0;border-bottom:1px solid var(--border)}.bay-group a strong{display:block;color:var(--navy);font-size:15px}.bay-group a span{display:block;color:var(--muted);font-size:12px;line-height:1.55;margin-top:2px}.search-layer{position:fixed;z-index:90;top:78px;left:max(16px,calc((100vw - 1120px)/2));width:440px;max-width:calc(100vw - 32px);visibility:hidden;opacity:0;pointer-events:none;transform:translateY(-8px);transition:.2s}.search-layer.is-open{visibility:visible;opacity:1;pointer-events:auto;transform:none}.search-card{background:#fff;border:1px solid var(--border);border-radius:0 0 12px 12px;box-shadow:var(--shadow);padding:18px}.search-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.search-head h2{font-size:18px;line-height:1.45;color:var(--navy);margin:2px 0 10px}.eyebrow{font-size:12px;color:var(--tide);font-weight:800;letter-spacing:.08em}.search-look{min-height:48px;border:1px solid var(--mist);background:var(--paper);border-radius:10px;display:flex;align-items:center;gap:10px;padding:0 14px;color:var(--muted)}.search-presets{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:12px}.search-presets a{min-height:44px;border:1px solid var(--border);border-radius:10px;display:flex;align-items:center;padding:0 12px;color:var(--navy);font-weight:700}.search-presets a:hover,.search-presets a:focus-visible{background:var(--mist);outline:2px solid var(--sky)}
.page-hero{padding:44px 0 26px}.page-hero .eyebrow{display:inline-block;margin-bottom:8px}.page-hero h1{font-size:clamp(28px,4vw,32px);line-height:1.3;color:var(--navy);margin:0 0 14px}.page-hero p{max-width:820px;margin:0;color:var(--muted);font-size:17px}.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.section{padding:24px 0}.section.alt{background:linear-gradient(180deg,rgba(220,234,246,.48),rgba(243,248,253,0))}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:18px}.section-head h2{margin:0;color:var(--navy);font-size:24px;line-height:1.35}.section-head p{margin:0;max-width:640px;color:var(--muted)}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card,.content-card,.notice-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.card{overflow:hidden}.card-body{padding:18px}.card h2,.card h3,.content-card h2,.content-card h3,.notice-card h2{color:var(--navy);margin-top:0}.card h3{font-size:21px;margin-bottom:8px}.card p{margin:0 0 14px;color:var(--muted)}.card a.more,.more-link{display:inline-flex;align-items:center;min-height:44px;color:var(--tide);font-weight:800}.image-slot{background:var(--deep-bg);border:1px solid rgba(91,163,208,.18);display:flex;align-items:center;justify-content:center;overflow:hidden}.image-slot.column{height:170px}.image-slot.feature{min-height:180px;max-height:200px}.image-slot.feature img{max-height:200px}.image-slot.column img{width:100%;height:100%;object-fit:contain;object-position:center}.image-slot .fallback{color:var(--navy);font-weight:800;text-align:center;padding:18px}.cover-box{background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow);overflow:hidden}.cover-copy{padding:22px}.cover-copy h1{margin:4px 0 10px;color:var(--navy);font-size:clamp(28px,4vw,32px);line-height:1.3}.cover-copy p{max-width:860px;margin:0;color:var(--muted)}.feature-row{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);gap:20px;align-items:center}.feature-row.reverse{grid-template-columns:minmax(300px,.85fr) minmax(0,1.15fr)}.feature-copy,.content-card{padding:22px}.feature-copy h2{margin:0 0 10px;color:var(--navy);font-size:24px}.feature-copy p{margin:0 0 12px}.feature-image{background:var(--deep-bg);border:1px solid var(--border);border-radius:12px;min-height:180px;max-height:320px;display:flex;align-items:center;justify-content:center;overflow:hidden}.feature-image img{width:100%;height:100%;max-height:320px;object-fit:contain;object-position:center}.long-copy{max-width:860px}.long-copy p{margin:0 0 16px}.long-copy h2{font-size:23px;margin:30px 0 10px;color:var(--navy)}.long-copy h3{font-size:19px;margin:24px 0 8px;color:var(--navy)}.two-col{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:22px;align-items:start}.aside-stack{display:grid;gap:14px}.notice-card{padding:18px}.notice-card p,.notice-card li{color:var(--muted)}.notice-card ul{padding-left:20px;margin-bottom:0}.rule-list{counter-reset:rule;display:grid;gap:14px}.rule-item{background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px;box-shadow:var(--shadow)}.rule-item h2{margin:0 0 8px;color:var(--navy);font-size:20px}.faq-list{display:grid;gap:14px}.faq-item{background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px 20px;box-shadow:var(--shadow)}.faq-item h2{font-size:19px;color:var(--navy);margin:0 0 8px}.faq-item p{margin:0;color:var(--text)}.app-showcase{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:center}.app-visual{background:var(--deep-bg);border:1px solid var(--border);border-radius:14px;min-height:360px;display:flex;align-items:center;justify-content:center;padding:14px}.app-visual img.app-image{max-height:420px;width:100%;object-fit:contain}.mark-chip{display:flex;align-items:center;gap:12px;margin:16px 0}.mark-chip img{width:64px;height:64px;object-fit:contain}.list-links{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.list-links a{background:#fff;border:1px solid var(--border);border-radius:10px;min-height:52px;display:flex;align-items:center;padding:10px 14px;color:var(--navy);font-weight:700}.list-links a:hover,.list-links a:focus-visible{background:var(--mist);outline:2px solid var(--sky)}.site-footer{margin-top:50px;background:var(--navy);color:var(--mist)}.footer-wrap{padding:36px 0 24px}.footer-brand-row{display:grid;grid-template-columns:320px 1fr;gap:24px;padding-bottom:24px;border-bottom:1px solid rgba(197,228,245,.18)}.footer-brand{display:flex;align-items:center;gap:12px}.footer-brand strong{display:block;color:#fff}.footer-brand span{display:block;font-size:12px;letter-spacing:.06em}.footer-logo{filter:brightness(0) invert(1);opacity:.95}.footer-brand-row p{margin:0;color:var(--mist)}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:26px 0}.footer-links h2{font-size:14px;color:#fff;margin:0 0 8px}.footer-links a{display:block;color:var(--mist);padding:3px 0}.footer-links a:hover,.footer-links a:focus-visible{color:#fff;text-decoration:underline}.footer-bottom{padding-top:16px;border-top:1px solid rgba(197,228,245,.18);font-size:14px;color:var(--mist)}.mobile-bottom{display:none}
@media(max-width:820px){.tide-bridge{display:none}.site-main{padding-top:96px}.card-grid{grid-template-columns:1fr}.feature-row,.feature-row.reverse,.two-col,.app-showcase,.footer-brand-row{grid-template-columns:1fr}.feature-row.reverse .feature-copy{order:1}.feature-row.reverse .feature-image{order:2}.footer-links{grid-template-columns:repeat(2,1fr)}.tide-bay{top:78px;width:calc(100% - 16px);height:62vh;max-height:580px;border-radius:0 0 12px 0}.search-layer{top:78px;left:16px;width:calc(100% - 32px)}.page-hero{padding-top:32px}.site-footer{padding-bottom:calc(50px + env(safe-area-inset-bottom))}.mobile-bottom{display:grid;position:fixed;z-index:70;left:0;right:0;bottom:0;grid-template-columns:repeat(5,1fr);height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border);box-shadow:0 -8px 24px rgba(14,58,92,.08)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-width:0;color:var(--navy);font-size:14px;font-weight:700}.mobile-bottom a.is-active{background:var(--tide);color:#fff}.shell{width:min(100% - 32px,1120px)}.image-slot.column{height:160px}}
@media(max-width:560px){.tide-line{height:28px}.tide-platform{height:50px}.top-actions{gap:6px}.secondary-btn,.primary-btn.compact{padding:6px 10px;min-height:44px}.brand-logo{max-width:150px}.search-presets,.list-links{grid-template-columns:1fr}.footer-links{grid-template-columns:1fr 1fr;gap:18px}.cover-copy,.feature-copy,.content-card{padding:18px}.section{padding:20px 0}.section-head{display:block}.section-head p{margin-top:6px}.app-visual{min-height:300px}.page-hero p{font-size:16px}}