:root{--ink:#102033;--muted:#586777;--line:#dfe6ec;--paper:#f6f4ee;--white:#fff;--navy:#082235;--cyan:#00a7c7;--cyan2:#007f9a;--orange:#f2a33a;--radius:18px;--shadow:0 18px 48px rgba(8,34,53,.10)}
.variant-forest{--navy:#12342d;--cyan:#159a75;--cyan2:#0d7258;--orange:#d89c3e;--paper:#f4f6f1}.variant-indigo{--navy:#171c46;--cyan:#5967e8;--cyan2:#3947ba;--orange:#ec9a45;--paper:#f5f5fa}.variant-slate{--navy:#1d2935;--cyan:#397f9e;--cyan2:#245c75;--orange:#dc8f45;--paper:#f4f5f5}.variant-plum{--navy:#30203a;--cyan:#9b579e;--cyan2:#744078;--orange:#d99b54;--paper:#f7f3f7}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.shell{width:min(1180px,calc(100% - 40px));margin:auto}.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:16px;z-index:99;background:#fff;padding:10px 16px}.topbar{height:78px;background:rgba(255,255,255,.96);border-bottom:1px solid rgba(8,34,53,.09);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}.nav-shell{height:100%;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;gap:12px;align-items:center}.brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;background:var(--navy);color:#fff;font-weight:800}.brand b{font-size:20px}.brand small{display:block;color:var(--muted);font-size:11px;letter-spacing:.08em}.topbar nav{display:flex;gap:7px}.topbar nav a{padding:9px 12px;border-radius:10px;font-size:15px}.topbar nav a:hover,.topbar nav a.active{background:#e8f7fa;color:#006d84}.nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 12px}.hero{background:var(--navy);color:#fff;padding:78px 0 66px;overflow:hidden;position:relative}.hero:after{content:"";position:absolute;width:520px;height:520px;border:110px solid rgba(0,167,199,.15);border-radius:50%;right:-180px;top:-260px}.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:70px;align-items:center;position:relative;z-index:1}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:#5ce0f4;text-transform:uppercase;letter-spacing:.12em;font-weight:700;font-size:13px}.eyebrow:before{content:"";width:24px;height:2px;background:currentColor}.hero h1{font-family:Georgia,"Songti SC",serif;font-size:clamp(42px,5.3vw,70px);line-height:1.08;letter-spacing:-.03em;margin:20px 0}.hero .lead{font-size:18px;color:#c7d6df;max-width:720px}.actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:center;padding:12px 20px;border-radius:12px;background:var(--cyan);color:#fff;font-weight:700}.button:hover{background:var(--cyan2)}.button.secondary{background:transparent;border:1px solid #547080}.score-card{background:#fff;color:var(--ink);border-radius:24px;padding:26px;box-shadow:var(--shadow)}.score-card .label{color:var(--muted);font-size:13px}.score-card strong{display:block;font:700 46px Georgia,serif;margin:6px 0}.score-card ul{padding:0;margin:20px 0 0;list-style:none}.score-card li{padding:9px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between}.section{padding:72px 0}.section.white{background:#fff}.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:30px}.section-head h2,.page-hero h1{font-family:Georgia,"Songti SC",serif;line-height:1.2;margin:0;font-size:clamp(32px,4vw,48px)}.section-head p{max-width:600px;color:var(--muted);margin:0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px;transition:.2s}.card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.card .num{font:700 30px Georgia,serif;color:var(--cyan2)}.card .tag,.tag{display:inline-flex;background:#e8f7fa;color:#006d84;padding:4px 9px;border-radius:999px;font-size:12px;font-weight:700}.card h3{font-size:20px;margin:14px 0 8px}.card p{color:var(--muted);margin:0}.method{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px}.method-list{display:grid;gap:12px}.method-item{background:#fff;border-left:4px solid var(--cyan);padding:18px 20px;border-radius:0 14px 14px 0}.method-item b{display:block}.method-item span{color:var(--muted);font-size:14px}.page-hero{background:var(--navy);color:#fff;padding:54px 0}.page-hero p{color:#c7d6df;max-width:760px}.crumb{font-size:13px;color:#7390a0;display:flex;gap:8px;margin-bottom:20px}.crumb a{color:#38c9e1}.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:34px;align-items:start}.article-list{display:grid;gap:16px}.article-row{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;display:grid;grid-template-columns:110px 1fr;gap:20px}.article-row .metric{background:#eef8fa;border-radius:12px;display:grid;place-items:center;text-align:center;color:#006d84;font-weight:800;min-height:90px}.article-row h2{font-size:21px;margin:0 0 6px}.article-row p{margin:0;color:var(--muted)}.sidebar{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;position:sticky;top:100px}.sidebar h2{font-size:18px;margin-top:0}.sidebar ol{padding-left:22px;margin-bottom:0}.sidebar li{margin:10px 0}.notice{border:1px solid #f2d29f;background:#fff8e9;border-radius:14px;padding:18px 20px;margin:22px 0}.footer{background:#061b2a;color:#c4d2da;padding:52px 0 20px}.footer-grid{display:grid;grid-template-columns:1.2fr .7fr 1fr;gap:50px}.footer h2{font:700 15px sans-serif;color:#fff}.footer a{display:block;margin:7px 0}.brand-light{color:#fff}.footer-bottom{border-top:1px solid #29404e;margin-top:34px;padding-top:18px;display:flex;justify-content:space-between;font-size:12px}.prose{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px}.prose h2{margin-top:32px}.prose h2:first-child{margin-top:0}.prose p,.prose li{color:#435364}.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.contact-item{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}.contact-item b{display:block;margin-bottom:8px;color:#006d84}
@media(max-width:900px){.topbar nav{display:none;position:absolute;top:68px;left:20px;right:20px;background:#fff;padding:10px;box-shadow:var(--shadow);border-radius:14px;flex-direction:column}.topbar nav.open{display:flex}.nav-toggle{display:block}.hero-grid,.method,.content-layout{grid-template-columns:1fr}.score-card{max-width:520px}.grid{grid-template-columns:repeat(2,1fr)}.sidebar{position:static}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}}
@media(max-width:620px){.shell{width:min(100% - 28px,1180px)}.topbar{height:68px}.brand small{display:none}.hero{padding:52px 0}.hero h1{font-size:40px}.hero .lead{font-size:16px}.section{padding:50px 0}.grid,.contact-grid{grid-template-columns:1fr}.section-head{display:block}.section-head p{margin-top:12px}.article-row{grid-template-columns:1fr}.article-row .metric{min-height:64px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin:5px 0}}
.download-notice{background:#fff;border:1px solid var(--line);border-left:5px solid var(--orange);border-radius:16px;padding:20px 24px;margin-bottom:24px}.download-notice p{margin:6px 0 0;color:var(--muted)}.download-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.download-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;display:flex;align-items:center;justify-content:space-between;gap:24px}.download-card h2{font-size:21px;margin:10px 0 4px}.download-card p{color:var(--muted);margin:0}.download-card .button{white-space:nowrap;flex:0 0 auto}
@media(max-width:1020px){.topbar nav{display:none;position:absolute;top:68px;left:20px;right:20px;background:#fff;padding:10px;box-shadow:var(--shadow);border-radius:14px;flex-direction:column}.topbar nav.open{display:flex}.nav-toggle{display:block}}
@media(max-width:900px){.download-grid{grid-template-columns:1fr}}
@media(max-width:620px){.download-card{display:block}.download-card .button{width:100%;margin-top:18px}}