:root{--carbon: #1a1f2e;--carbon-2: #242b3d;--carbon-3: #2e3750;--blue: #3b82f6;--blue-deep: #2563eb;--blue-lite: #60a5fa;--blue-pale: #eff6ff;--ice: #f0f4fa;--card: #fff;--line: #d6dff0;--txt: #1c2340;--txt-2: #3a4a6b;--txt-3: #6b7ea8;--font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--ice);color:var(--txt);font-family:var(--font);line-height:1.75}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}.site-header{position:sticky;top:0;z-index:20;background:#1a1f2ef5;backdrop-filter:blur(14px);box-shadow:0 6px 24px #090e1c2e}.nav-shell{width:min(1160px,calc(100% - 40px));min-height:72px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:10px;color:#eef2ff;font-weight:800;font-size:1.05rem;line-height:1.15}.brand-mark{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:linear-gradient(135deg,var(--blue),var(--blue-deep));box-shadow:0 5px 20px #3b82f666}.brand small{display:block;color:#8ba3cc;font-size:.68rem;font-weight:600;letter-spacing:.08em}nav{display:flex;align-items:center;gap:26px}nav a{color:#c8d5e8;font-size:.92rem;font-weight:650}nav a:hover{color:#fff}.mobile-nav-toggle{display:none}.nav-action{padding:10px 17px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;color:#fff;background:var(--blue);border-radius:9px}footer{background:var(--carbon);color:#c8d5e8;padding:48px 0}.footer-shell{width:min(1120px,calc(100% - 40px));margin:auto;display:grid;grid-template-columns:1fr auto;gap:12px 48px}footer strong{color:#fff;font-size:1.15rem}footer p{margin:5px 0}.footer-links{display:flex;gap:24px;align-items:start}.footer-ai-btn{min-height:44px;padding:8px 14px;display:inline-flex;align-items:center;justify-content:center;color:#c8d5e8;background:transparent;border:1px solid #36415c;border-radius:8px;font:inherit;font-weight:650;cursor:pointer}.footer-ai-btn:hover{color:#fff;border-color:var(--blue-lite)}.legal{grid-column:1/-1;padding-top:22px;border-top:1px solid #36415c;color:#8ba3cc;font-size:.86rem}.shell{width:min(1120px,calc(100% - 40px));margin-inline:auto}.section{padding:76px 0}.eyebrow{color:var(--blue-deep);text-transform:uppercase;font-weight:800;letter-spacing:.1em;font-size:.76rem}.section-title{max-width:720px;margin:8px 0 32px;font-size:clamp(1.8rem,4vw,2.7rem);line-height:1.2;letter-spacing:-.035em}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:0 12px 34px #20305612;transition:transform .2s,border-color .2s}.card:hover{transform:translateY(-3px);border-color:var(--blue-lite)}.card h2,.card h3{margin:8px 0;line-height:1.35}.card p{color:var(--txt-2)}.tag{display:inline-flex;padding:4px 10px;margin:0 5px 5px 0;color:var(--blue-deep);background:var(--blue-pale);border-radius:999px;font-size:.76rem;font-weight:700}.link-arrow{color:var(--blue-deep);font-weight:750}.page-hero{padding:70px 0 54px;color:#eef2ff;background:radial-gradient(circle at 15% 0%,rgba(59,130,246,.25),transparent 35%),linear-gradient(145deg,var(--carbon),var(--carbon-3))}.page-hero h1{max-width:840px;margin:10px 0 16px;font-size:clamp(2.1rem,5vw,3.5rem);line-height:1.16;letter-spacing:-.04em}.page-hero p{max-width:700px;margin:0;color:#b6c8e7;font-size:1.06rem}@media(max-width:760px){.nav-shell{width:min(100% - 28px,1160px)}.mobile-nav-toggle{width:44px;height:44px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;border:1px solid #52617e;border-radius:9px;background:transparent;cursor:pointer}.mobile-nav-toggle span{width:22px;height:2px;border-radius:2px;background:#eef2ff}.site-header nav{display:none;position:absolute;top:100%;left:0;right:0;padding:8px 14px 16px;flex-direction:column;align-items:stretch;gap:0;background:#1a1f2e;box-shadow:0 12px 22px #090e1c47;max-height:calc(100vh - 72px);overflow-y:auto}.site-header nav.is-open{display:flex}.site-header nav a{display:flex;align-items:center;min-height:48px;padding:8px 12px;color:#eef2ff}.nav-action{font-size:.82rem;padding:9px 12px}.card-grid{grid-template-columns:1fr}.section{padding:54px 0}.footer-shell{grid-template-columns:1fr}.legal{grid-column:auto}}