*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#F4FAFC;color:#24505A;font:16px/1.75 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;overflow-x:hidden}a{color:#0F5B68;text-decoration:none}a:hover{text-decoration:underline}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(43,179,196,.45);outline-offset:3px}img{display:block;max-width:100%;height:auto}.shell{width:min(1180px,calc(100% - 32px));margin-inline:auto}.skip-link{position:fixed;left:16px;top:-60px;z-index:1000;background:#fff;padding:10px 14px;border-radius:8px}.skip-link:focus{top:10px}.site-header{position:fixed;inset:0 0 auto;z-index:80}.tide-line{height:22px;background:#0F5B68;color:#fff;font-size:12px}.tide-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.text-control{border:0;background:transparent;color:#fff;min-height:22px;padding:0 4px;cursor:pointer}.lighthouse-bar{height:68px;background:#fff;border-bottom:1px solid rgba(26,127,143,.16)}.lighthouse-inner{height:68px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand{justify-self:start;display:flex;align-items:center;min-height:44px;font-weight:800;color:#0E3A46}.brand img{max-height:36px;width:auto}.catalog-button,.app-link,.button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;padding:0 16px;border:1px solid rgba(26,127,143,.2);font:inherit;cursor:pointer}.catalog-button{background:#E7F3F6;color:#0E3A46}.app-link{justify-self:end;background:linear-gradient(135deg,#2BB3C4 0%,#1A7F8F 55%,#0F5B68 100%);color:#fff}.shore-tabs{height:44px;background:#D7EEF2;border-bottom:1px solid rgba(26,127,143,.16)}.shore-inner{height:44px;display:flex;align-items:center;gap:6px}.shore-inner a{padding:5px 10px;border-radius:6px;color:#0E3A46}.shore-inner a.is-current{background:#1A7F8F;color:#fff}main{padding-top:134px}.hero,.page-hero{padding:42px 0 26px}.media-slot{background:linear-gradient(135deg,#D7EEF2,#E7F3F6);border:1px solid rgba(26,127,143,.16);border-radius:18px;min-height:180px;overflow:hidden}.media-slot img{width:100%;max-height:320px;object-fit:cover}.eyebrow{margin:18px 0 4px;color:#1A7F8F;font-weight:800;letter-spacing:.08em}.hero h1,.page-hero h1{margin:0;color:#0E3A46;font-size:clamp(28px,5vw,32px);line-height:1.2}.lead{max-width:820px;color:#4A7380;font-size:17px}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.button.primary{background:linear-gradient(135deg,#2BB3C4 0%,#1A7F8F 55%,#0F5B68 100%);color:#fff;border:0}.button.secondary{background:#fff;color:#0F5B68}.section{padding:34px 0}.section.alt{background:#E7F3F6}.section h2{margin:0 0 14px;color:#0E3A46;font-size:24px}.section h3{color:#0F5B68}.section-intro{max-width:820px;margin:0 0 22px;color:#4A7380}.tag-grid,.card-grid,.three-grid,.four-grid{display:grid;gap:16px}.tag-grid{grid-template-columns:repeat(3,1fr)}.three-grid{grid-template-columns:repeat(3,1fr)}.four-grid{grid-template-columns:repeat(4,1fr)}.card{background:#fff;border:1px solid rgba(26,127,143,.16);border-radius:16px;padding:20px;box-shadow:0 14px 34px rgba(14,58,70,.08)}.tag-card{background:#fff;border-left:5px solid #2BB3C4;border-radius:12px;padding:16px}.tag-card:nth-child(even){border-left-color:#0F5B68}.number-list{display:grid;gap:10px}.number-item{display:grid;grid-template-columns:48px 1fr;gap:12px;padding:14px 0;border-bottom:1px solid rgba(26,127,143,.16)}.number-item b{color:#1A7F8F;font-size:20px}.split-media{display:grid;grid-template-columns:minmax(260px, .9fr) 1.3fr;gap:26px;align-items:start}.content-image{border-radius:16px;border:1px solid rgba(26,127,143,.16);background:#D7EEF2;overflow:hidden}.content-image img{width:100%;max-height:320px;object-fit:cover}.prose{background:#fff;border:1px solid rgba(26,127,143,.16);border-radius:16px;padding:24px;box-shadow:0 14px 34px rgba(14,58,70,.06)}.prose p{margin:0 0 1em}.chapter{padding:20px 0;border-top:1px solid rgba(26,127,143,.16)}.chapter:first-child{border-top:0}.chapter h2{font-size:21px}.quote-note{padding:18px;border-radius:12px;background:#D7EEF2;color:#0E3A46}.catalog-panel{position:fixed;z-index:120;top:0;bottom:0;left:0;width:360px;max-width:86vw;background:#fff;transform:translateX(-104%);visibility:hidden;pointer-events:none;transition:transform .25s ease,visibility .25s;overflow-y:auto;box-shadow:0 14px 34px rgba(14,58,70,.18)}.catalog-panel.is-open{transform:none;visibility:visible;pointer-events:auto}.catalog-head{position:sticky;top:0;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid rgba(26,127,143,.16)}.catalog-brand{display:flex;align-items:center;gap:10px}.catalog-brand img{max-height:30px;max-width:120px}.close-button{min-height:44px;border:1px solid rgba(26,127,143,.18);background:#fff;color:#0E3A46;border-radius:10px;padding:0 14px}.catalog-groups{padding:8px 16px 30px}.catalog-groups h2{font-size:14px;color:#7A9AA4;text-transform:uppercase}.catalog-groups a{display:block;padding:10px 0;border-top:1px solid rgba(26,127,143,.12)}.catalog-groups b,.catalog-groups span{display:block}.catalog-groups span{font-size:13px;color:#4A7380}.search-layer{position:fixed;z-index:115;left:0;right:0;top:90px;visibility:hidden;pointer-events:none;transform:translateY(-14px);opacity:0;transition:.2s}.search-layer.is-open{visibility:visible;pointer-events:auto;transform:none;opacity:1}.search-card{width:min(760px,calc(100% - 32px));margin:0 auto;background:#fff;border:1px solid rgba(26,127,143,.16);box-shadow:0 14px 34px rgba(14,58,70,.12);padding:22px}.search-head{display:flex;align-items:center;justify-content:space-between}.search-box{display:block;color:#4A7380;margin-top:14px}.search-box input{width:100%;min-height:46px;margin-top:7px;border:1px solid rgba(26,127,143,.24);border-radius:10px;padding:0 12px;font:inherit;color:#0E3A46}.preset-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.preset-links a{background:#D7EEF2;color:#0E3A46;border-radius:8px;padding:8px 11px}.page-mask{position:fixed;z-index:110;inset:0;background:rgba(14,58,70,.36);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.page-mask.is-open{opacity:1;visibility:visible;pointer-events:auto}.layer-open{overflow:hidden}.mobile-bottom{display:none}.site-footer{background:#0E3A46;color:#D4E8EC;padding:38px 0 28px}.site-footer a{color:#D4E8EC}.footer-brand{margin-bottom:24px}.footer-mark{display:inline-flex;align-items:center;gap:12px}.footer-mark img{max-height:34px;max-width:140px}.footer-mark span,.footer-mark small{display:block}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.footer-grid section{display:grid;align-content:start;gap:5px}.footer-grid h2{font-size:15px;color:#fff}.footer-note{border-top:1px solid rgba(212,232,236,.18);margin-top:26px;padding-top:18px;font-size:14px;color:#b9d5da}.faq-list details{background:#fff;border:1px solid rgba(26,127,143,.16);border-radius:12px;padding:16px 18px;margin:10px 0}.faq-list summary{cursor:pointer;color:#0E3A46;font-weight:700}.contact-note{padding:20px;background:#E7F3F6;border-radius:14px}.mini-list{display:grid;gap:10px}.mini-list a{display:block;background:#fff;border:1px solid rgba(26,127,143,.16);border-radius:12px;padding:14px}.frame-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.frame{background:#fff;border-radius:16px;border:1px solid rgba(26,127,143,.16);overflow:hidden}.frame .ph{aspect-ratio:16/9;background:linear-gradient(135deg,#D7EEF2,#E7F3F6)}.frame p{padding:0 16px 16px}.site-footer p{margin:.5em 0}@media(max-width:800px){.shore-tabs{display:none}main{padding-top:90px}.tag-grid,.three-grid,.four-grid,.footer-grid,.split-media{grid-template-columns:1fr}.frame-grid{grid-template-columns:1fr}.hero,.page-hero{padding-top:28px}.lighthouse-inner{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:8px}.brand{min-width:0}.brand img{max-width:120px}.catalog-button,.app-link{padding:0 11px}.app-link{white-space:nowrap}.search-layer{top:0;bottom:0;background:#E7F3F6}.search-card{width:100%;min-height:100%;margin:0;border:0;border-radius:0;padding:22px 16px}.mobile-bottom{position:fixed;display:grid;grid-template-columns:repeat(5,1fr);z-index:70;left:0;right:0;bottom:0;min-height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid rgba(26,127,143,.16)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:50px;font-size:13px}.mobile-bottom a.is-current{background:#1A7F8F;color:#fff}.site-footer{padding-bottom:calc(84px + env(safe-area-inset-bottom))}.number-item{grid-template-columns:40px 1fr}}