*{box-sizing:border-box}body{margin:0;background:#f2f6f9;color:#173440;font:16px/1.7 system-ui,'Microsoft YaHei',sans-serif}header{background:#092e3c;color:#fff;padding:20px max(24px,calc((100% - 1240px)/2));display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}header a{color:inherit;text-decoration:none}.brand{font-size:22px;font-weight:750}.brand span{font-size:14px;font-weight:400;margin-left:14px;color:#b9d0db}nav{display:flex;gap:24px}a{color:#096b70}main{max-width:1288px;padding:32px 24px;margin:auto}.intro{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:26px}.intro small{font-size:14px;color:#516772}h1{font-size:32px;margin:8px 0;line-height:1.4}h2{font-size:30px;margin:18px 0 8px}.help{white-space:normal}.areas{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.area{min-width:0;background:white;border:1px solid #d9e5e9;border-radius:20px;padding:26px;display:flex;flex-direction:column;scroll-margin-top:20px}.areaTop{display:flex;align-items:center;gap:16px;font-size:13px;color:#516772}.num{font-size:29px;font-weight:800;color:#096b70}.area>p{color:#516772;min-height:55px;margin:0 0 18px}.featured{border-top:5px solid #096b70;padding-top:22px;box-shadow:0 10px 32px #102f4010}.mainLink{display:block;padding:13px 16px;text-decoration:none;border-radius:10px;color:white;background:#096b70;margin-bottom:22px;font-weight:700}.links{display:grid;gap:0}.links a{display:block;padding:13px 0;text-decoration:none;border-bottom:1px solid #e3ebef;font-weight:650}.links small{display:block;color:#516772;font-size:14px;font-weight:400}.journey{display:flex;flex-direction:column;align-items:center;text-align:center;gap:3px}.journey span{background:#eef5f8;padding:8px;width:100%;border-radius:8px}.journey b{font-weight:400;color:#76929b}.numbers{display:flex;justify-content:space-around;margin-top:18px;text-align:center}.numbers>b{font-size:26px}.numbers small{display:block;font-size:14px;font-weight:400;color:#516772}.area .note{font-size:14px;margin:20px 0 0;min-height:0}.loop{padding:22px 26px;background:#e5eef3;border-radius:15px;margin-top:26px}.loop p{margin:6px 0 0}details{margin-top:20px;font-size:14px}summary{cursor:pointer}details a{display:block;padding:8px}footer{max-width:1240px;margin:15px auto 30px;padding:0 24px;color:#516772;font-size:14px}a:focus-visible,summary:focus-visible{outline:3px solid #d69a24;outline-offset:4px}a:hover{text-decoration:underline}@media(max-width:1000px){.areas{grid-template-columns:1fr}.intro{align-items:flex-start;flex-direction:column}.area>p{min-height:0}.journey{flex-direction:row}.journey b{transform:rotate(-90deg)}.links{grid-template-columns:1fr 1fr;gap:14px}h1{font-size:28px}}@media(max-width:520px){main{padding:22px 14px}.area{padding:22px}.links{grid-template-columns:1fr}nav{gap:14px}.brand span{display:block;margin:0}.journey{font-size:14px}}

/* Refined home surfaces */
body{background:radial-gradient(ellipse at 85% 0%,#deebf8 0,transparent 45%),#f5f7fb;color:#183248}
header{background:#fff;color:#183248;border-bottom:1px solid #e2e8ef;padding-top:22px;padding-bottom:22px}.brand{letter-spacing:.02em}.brand span{color:#607587}header nav a{padding:7px 12px;border-radius:8px}header nav a:hover{background:#edf3f9;text-decoration:none}
main{padding-top:38px}.intro{margin-bottom:32px}.intro small{color:#456984;letter-spacing:.06em}h1{font-size:clamp(27px,3vw,38px);font-weight:800;letter-spacing:-.025em}.help{background:#fff;padding:10px 16px;border:1px solid #dce5ef;border-radius:24px;font-size:14px}
.areas{gap:22px;align-items:stretch}.area{border:1px solid #e1e7ef;border-radius:24px;padding:28px;box-shadow:0 8px 26px #17364b08;border-top:5px solid var(--accent,#3e6cba)}#design{--accent:#3e6cba}#learn{--accent:#087e79}#practice{--accent:#7655ac}
.areaTop{font-size:12px;letter-spacing:.035em;align-items:center}.num{display:grid;place-items:center;width:58px;height:58px;flex:0 0 58px;border-radius:18px;background:color-mix(in srgb,var(--accent) 9%,white);color:var(--accent);font-size:26px}
.area h2{margin-top:22px;font-size:29px}.area>p{font-size:16px;line-height:1.85}.mainLink{background:var(--accent);padding:14px 18px;border-radius:12px;margin-bottom:20px}.mainLink:hover{text-decoration:none;filter:brightness(.94)}
.featured{padding-top:28px;background:linear-gradient(160deg,#fff 35%,#f0f9f8);box-shadow:0 14px 34px #087e7912}
.links a{padding:13px 10px;border-radius:9px;border-bottom:0;margin-bottom:3px;font-size:16px}.links a:hover{background:#f1f5fa;text-decoration:none}.links small{margin-top:3px;font-size:14px}
.journey{padding:6px 0}.journey span{background:white;border:1px solid #d6e9e6;border-radius:10px;font-weight:600;padding:10px}.journey b{color:#087e79}
.numbers{padding:16px 0;border-top:1px solid #dbece8;border-bottom:1px solid #dbece8;gap:8px}.numbers>b{color:#08716d;font-size:28px;font-variant-numeric:tabular-nums}
.loop{background:#12384b;color:#fff;border-radius:18px;display:flex;gap:28px;align-items:center;padding:24px 28px}.loop b{white-space:nowrap}.loop p{color:#dce9f0;font-size:16px}.area details{border-top:1px solid #e5ebf0;padding-top:14px}footer{color:#607587}
@media(prefers-reduced-motion:no-preference){.area{transition:transform .18s,box-shadow .18s}.area:hover{transform:translateY(-3px);box-shadow:0 16px 34px #17364b12}.mainLink,.links a{transition:background .15s,filter .15s}}
@media(max-width:1000px){.area{padding:24px}.loop{align-items:flex-start;flex-direction:column;gap:4px}.intro{margin-bottom:24px}}@media(max-width:520px){main{padding-top:24px}.areaTop{font-size:12px}.journey{flex-direction:column}.journey b{transform:none}header{padding:16px}header nav{gap:3px}header nav a{padding:6px 8px}.num{width:48px;height:48px;flex-basis:48px}.area h2{font-size:26px}}