:root{--bg:#F3F8FD;--deep-bg:#DCEAF6;--card:#FFFFFF;--navy:#0E3A5C;--text:#24384C;--muted:#5A7388;--assist:#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;--max:1120px}
*{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:16px;line-height:1.78;overflow-x:hidden}body.panel-open{overflow:hidden}a{color:var(--navy);text-decoration:none}a:hover{text-decoration:underline}button,input{font:inherit}.skip-link{position:fixed;left:16px;top:-60px;background:#fff;color:var(--navy);padding:10px 14px;z-index:1000;border-radius:8px}.skip-link:focus{top:12px}.site-header{position:fixed;top:0;left:0;right:0;z-index:120}.tide-line{height:8px;background:var(--tide);color:#fff;overflow:visible}.top-inner,.stage-inner,.bridge-inner,.footer-inner,.content-wrap{width:min(calc(100% - 32px),var(--max));margin:0 auto}.top-inner{height:8px;display:flex;align-items:center;justify-content:space-between;position:relative}.brand-mini{font-size:6px;line-height:8px;color:#fff;letter-spacing:.02em;white-space:nowrap}.text-button{border:0;background:transparent;cursor:pointer}.top-search-trigger{position:absolute;right:0;top:0;width:44px;height:44px;padding:0;color:transparent;z-index:2}.top-search-trigger::after{content:"搜索";position:absolute;right:0;top:0;width:44px;height:8px;line-height:8px;text-align:right;font-size:6px;color:#fff}.tide-stage{height:50px;background:#fff;border-bottom:1px solid var(--mist)}.stage-inner{height:100%;display:flex;align-items:center;justify-content:space-between}.logo-link{display:flex;align-items:center;min-width:120px;max-width:260px;height:44px}.site-logo,.footer-logo,.bay-logo{height:26px;max-width:220px;width:auto;object-fit:contain}.logo-fallback{font-weight:800;color:var(--navy);font-size:20px}.stage-actions{display:flex;gap:8px;align-items:center;margin-right:64px}.stage-button{min-height:44px;padding:9px 14px;border:1px solid var(--sky);background:#fff;color:var(--navy);border-radius:10px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;text-decoration:none}.stage-button.primary{background:var(--tide);border-color:var(--tide);color:#fff}.stage-button:hover,.stage-button:focus-visible,.text-button:focus-visible,.close-button:focus-visible{outline:3px solid rgba(91,163,208,.28);outline-offset:2px;text-decoration:none}.tide-bridge{height:64px;background:var(--mist);border-bottom:1px solid rgba(255,255,255,.8)}.bridge-inner{height:100%;display:grid;grid-template-columns:repeat(5,1fr)}.bridge-link{display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--navy);border-right:1px solid rgba(255,255,255,.9);min-height:64px}.bridge-link:first-child{border-left:1px solid rgba(255,255,255,.9)}.bridge-link.current{background:#fff}.site-main{padding-top:122px;min-height:70vh}.content-wrap{padding:34px 0 56px}.hero,.section-card,.article-card,.info-strip,.qa-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.hero{padding:20px;margin-bottom:28px}.hero-image{max-height:200px;min-height:150px;width:100%;object-fit:contain;object-position:center;background:var(--deep-bg);border-radius:10px}.image-placeholder{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--deep-bg),#eef6fc);color:var(--navy);border:1px dashed rgba(14,58,92,.18);border-radius:10px;min-height:160px;text-align:center;padding:18px}.image-placeholder.hero-image{max-height:200px}.hero-kicker{margin:16px 0 4px;color:var(--tide);font-weight:800;letter-spacing:.06em}.hero h1,.page-hero h1{font-size:clamp(28px,4vw,32px);line-height:1.28;color:var(--navy);margin:0 0 14px}.hero p,.page-hero p{margin:0;color:var(--muted)}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn{min-height:44px;padding:10px 16px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--sky);background:#fff;color:var(--navy);font-weight:700}.btn.primary{background:var(--tide);border-color:var(--tide);color:#fff}.btn:hover,.btn:focus-visible{outline:3px solid rgba(91,163,208,.22);outline-offset:2px;text-decoration:none}.three-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:26px}.discussion-card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:16px;box-shadow:var(--shadow);display:flex;flex-direction:column}.discussion-card h2,.section-card h2,.article-card h2,.page-hero h2{color:var(--navy);line-height:1.35}.discussion-card h2{font-size:22px;margin:12px 0 8px}.column-image{height:165px;width:100%;object-fit:contain;object-position:center;background:var(--bg);border-radius:10px}.section-card{padding:22px;margin-bottom:22px}.section-card.media-up{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(260px,.8fr);gap:24px;align-items:center}.section-card.media-up.reverse{grid-template-columns:minmax(260px,.8fr) minmax(0,1.2fr)}.section-card.media-up.reverse .media-box{order:-1}.content-image{width:100%;height:175px;object-fit:contain;object-position:center;background:var(--bg);border-radius:10px}.app-image{width:100%;max-height:420px;object-fit:contain;object-position:center;background:var(--bg);border-radius:10px}.section-card h2{font-size:24px;margin-top:0}.section-card p:last-child{margin-bottom:0}.sand-mark{display:inline-block;width:38px;height:5px;background:var(--sand);border-radius:3px;margin-bottom:8px}.page-hero{background:var(--deep-bg);border-bottom:1px solid var(--border)}.page-hero .content-wrap{padding-top:38px;padding-bottom:34px}.crumb{font-size:14px;color:var(--muted);margin-bottom:8px}.article-shell{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:24px}.article-card{padding:24px}.article-card h2{font-size:23px;margin-top:32px;margin-bottom:10px}.article-card h2:first-child{margin-top:0}.article-card h3{color:var(--navy);font-size:18px}.article-card ul,.article-card ol{padding-left:1.25em}.article-card li{margin:.45em 0}.side-note{position:sticky;top:144px;align-self:start;background:var(--navy);color:#fff;border-radius:12px;padding:18px}.side-note h2{margin-top:0;color:#fff;font-size:19px}.side-note p,.side-note li{color:var(--mist)}.side-note a{color:#fff;text-decoration:underline}.info-strip{padding:18px;margin-top:22px;background:#fff}.info-strip strong{color:var(--navy)}.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.service-grid article{background:#fff;border:1px solid var(--border);border-radius:12px;padding:18px}.service-grid h2{font-size:20px;color:var(--navy);margin-top:0}.faq-list{display:grid;gap:16px}.qa-item{padding:20px}.qa-item h2{font-size:20px;color:var(--navy);margin:0 0 8px}.site-footer{background:var(--navy);color:var(--mist);padding:42px 0 calc(34px + env(safe-area-inset-bottom))}.footer-brand{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:28px}.footer-brand strong{color:#fff}.footer-brand span{font-size:13px;letter-spacing:.08em}.footer-logo-text{color:#fff;font-weight:800}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:24px 0;border-top:1px solid rgba(197,228,245,.18);border-bottom:1px solid rgba(197,228,245,.18)}.footer-groups h2{color:#fff;font-size:16px;margin:0 0 10px}.footer-groups a{display:block;color:var(--mist);padding:4px 0}.footer-note{max-width:860px;color:var(--mist)}.copyright{color:#fff;font-size:14px}.page-overlay{position:fixed;inset:0;background:rgba(5,27,43,.46);z-index:130;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.page-overlay.open{opacity:1;visibility:visible;pointer-events:auto}.tide-bay,.search-panel{position:fixed;z-index:140;background:#fff;box-shadow:0 22px 50px rgba(14,58,92,.26);visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-10px);transition:.2s}.tide-bay.open,.search-panel.open{visibility:visible;pointer-events:auto;opacity:1;transform:none}.tide-bay{left:0;top:58px;width:300px;height:min(480px,calc(100vh - 80px));border-radius:0 0 12px 0;overflow:hidden}.bay-head,.search-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--border)}.bay-brand{display:flex;align-items:center;gap:8px;color:var(--navy)}.close-button{min-height:44px;border:1px solid var(--border);background:#fff;color:var(--navy);border-radius:10px;padding:8px 12px;cursor:pointer}.bay-scroll{height:calc(100% - 69px);overflow:auto;padding:12px 14px}.bay-group{margin-bottom:14px}.bay-group h2{font-size:14px;color:var(--tide);margin:0 0 5px}.bay-group a{display:block;padding:7px 4px;border-bottom:1px solid rgba(14,58,92,.08)}.bay-group a strong{display:block;color:var(--navy)}.bay-group a span{display:block;color:var(--muted);font-size:12px;line-height:1.45;margin-top:2px}.search-panel{left:max(16px,calc((100vw - min(1120px,calc(100vw - 32px)))/2));top:58px;width:440px;max-width:calc(100vw - 32px);border-radius:0 0 12px 12px;padding-bottom:16px}.search-panel label{display:block;padding:14px 16px 8px;color:var(--muted)}.search-panel input{display:block;width:calc(100% - 32px);margin:0 16px 12px;border:1px solid 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@media (max-width:820px){.tide-bridge{display:none}.site-main{padding-top:58px}.top-search-trigger{position:absolute;right:0;top:0;width:44px;height:44px;margin:0;padding:0;color:transparent;transform:none}.top-inner{width:calc(100% - 24px)}.stage-inner{width:calc(100% - 24px)}.stage-actions{margin-right:0;gap:6px}.stage-button{padding:8px 10px}.logo-link{min-width:0;max-width:45vw}.site-logo{max-width:40vw}.content-wrap{width:calc(100% - 32px);padding-top:26px;padding-bottom:42px}.three-grid,.service-grid{grid-template-columns:1fr}.section-card.media-up,.section-card.media-up.reverse{grid-template-columns:1fr}.section-card.media-up.reverse .media-box{order:0}.article-shell{grid-template-columns:1fr}.side-note{position:static}.footer-groups{grid-template-columns:repeat(2,1fr)}.tide-bay{top:58px;width:calc(100vw - 16px);height:62vh;max-height:620px}.search-panel{top:58px;left:8px;width:calc(100vw - 16px);max-width:none}.mobile-bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:110;display:grid;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 20px rgba(14,58,92,.08)}.mobile-bottom-nav a{display:flex;align-items:center;justify-content:center;min-height:50px;font-size:14px;color:var(--navy)}.mobile-bottom-nav a.current{background:var(--tide);color:#fff}.site-footer{padding-bottom:calc(84px + env(safe-area-inset-bottom))}.page-hero .content-wrap{padding-top:28px}}
@media (max-width:520px){.hero{padding:16px}.section-card,.article-card{padding:18px}.footer-groups{grid-template-columns:1fr 1fr;gap:16px}.search-presets{grid-template-columns:1fr}.stage-actions .stage-button:first-child{min-width:58px}.stage-actions .stage-button.primary{min-width:72px}.logo-fallback{font-size:18px}.hero h1,.page-hero h1{font-size:28px}}