:root{--primary-50: #f4f7fb;--primary-100: #e8eef7;--primary-200: #cdd8ec;--primary-300: #a8bad8;--primary-400: #5f7fb8;--primary-500: #2c5494;--primary-600: #244878;--primary-700: #1e3a6f;--primary-800: #162c58;--primary-900: #0f2440;--primary-950: #08152b;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-200: #e5e7eb;--gray-300: #d1d5db;--gray-400: #9ca3af;--gray-500: #6b7280;--gray-600: #4b5563;--gray-700: #374151;--gray-900: #111827;--emerald-50: #ecfdf5;--emerald-200: #a7f3d0;--emerald-600: #059669;--emerald-700: #047857;--amber-50: #fffbeb;--amber-200: #fde68a;--amber-700: #b45309;--radius-sm: 6px;--radius: 8px;--radius-lg: 16px;--shadow-sm: 0 1px 2px 0 rgba(15, 36, 64, .05), 0 1px 3px 0 rgba(15, 36, 64, .06);--shadow-md: 0 4px 6px -1px rgba(15, 36, 64, .08), 0 2px 4px -2px rgba(15, 36, 64, .06);--shadow-lg: 0 10px 15px -3px rgba(15, 36, 64, .08), 0 4px 6px -4px rgba(15, 36, 64, .06);color-scheme:light}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;background:var(--gray-50);color:var(--gray-900);font-family:Inter,system-ui,-apple-system,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}img{max-width:100%;height:auto;display:block}a{color:var(--primary-700);text-decoration:none}a:hover{color:var(--primary-500)}strong{font-weight:600}code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.875em;background:var(--primary-50);border:1px solid var(--primary-100);border-radius:4px;padding:1px 5px;color:var(--primary-700)}hr{border:0;border-top:1px solid var(--gray-200);margin:28px 0}.container{width:100%;max-width:68rem;margin:0 auto;padding:0 24px}.container-narrow{max-width:46rem}.topbar{background:#fff;border-bottom:1px solid var(--gray-200);position:sticky;top:0;z-index:20}.topbar-inner{min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:10px;color:var(--gray-900)}.brand:hover{color:var(--gray-900);opacity:.85}.brand-mark{display:grid;place-items:center;width:32px;height:32px;border-radius:var(--radius-sm);background:linear-gradient(140deg,var(--primary-700),var(--primary-950));color:#fff;font-size:13px;font-weight:700;letter-spacing:.02em}.brand-text{display:flex;flex-direction:column;line-height:1.15}.brand-text strong{font-size:15px;font-weight:600}.brand-text small{font-size:11px;color:var(--gray-500)}.nav{display:flex;align-items:center;gap:4px}.nav a{padding:7px 11px;border-radius:var(--radius);font-size:14px;color:var(--gray-600);font-weight:500}.nav a:hover{background:var(--gray-100);color:var(--gray-900)}.nav a[aria-current=page]{color:var(--primary-700);background:var(--primary-50)}main{padding:40px 0 64px;min-height:60vh}.hero{text-align:center;padding:24px 0 36px}.hero h1{font-size:clamp(26px,5.2vw,40px);line-height:1.28;letter-spacing:-.015em;font-weight:650;margin:0 0 14px}.hero p{margin:0 auto;max-width:36rem;color:var(--gray-600);font-size:16px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:26px}h1{font-size:clamp(24px,4.4vw,32px);line-height:1.3;letter-spacing:-.012em;font-weight:650;margin:0 0 12px}h2{font-size:19px;line-height:1.4;font-weight:620;margin:32px 0 12px}h3{font-size:16px;line-height:1.45;font-weight:620;margin:24px 0 8px}.lede{color:var(--gray-600);font-size:16px;margin:0 0 8px}.muted{color:var(--gray-500);font-size:13.5px}.eyebrow{font-size:11.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--primary-500);margin:0 0 10px}.button,button{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--primary-700);color:#fff;border:1px solid var(--primary-700);border-radius:var(--radius);padding:11px 20px;font:inherit;font-size:14.5px;font-weight:600;cursor:pointer;box-shadow:var(--shadow-sm);transition:background .15s,border-color .15s,color .15s}.button:hover,button:hover{background:var(--primary-600);border-color:var(--primary-600);color:#fff}.button.secondary{background:#fff;color:var(--primary-700);border-color:var(--gray-300)}.button.secondary:hover{background:var(--gray-50);border-color:var(--primary-300);color:var(--primary-700)}.button:focus-visible,button:focus-visible{outline:none;box-shadow:0 0 0 3px #2c549440}.panel{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:24px;margin-bottom:18px;box-shadow:var(--shadow-sm)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}.card{display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow-sm);color:var(--gray-900);transition:border-color .15s,box-shadow .15s,transform .15s}.card:hover{border-color:var(--primary-300);box-shadow:var(--shadow-md);transform:translateY(-1px);color:var(--gray-900)}.card h3{margin:0;font-size:16.5px}.card p{margin:0;color:var(--gray-600);font-size:14px}.card .more{margin-top:auto;padding-top:6px;color:var(--primary-700);font-size:13.5px;font-weight:600}.prose{max-width:46rem}.prose>*{max-width:100%}.prose h2{padding-top:6px}.prose ul,.prose ol{padding-left:1.35em;margin:0 0 14px}.prose li{margin:5px 0}.prose li::marker{color:var(--gray-400)}.prose blockquote{margin:18px 0;padding:12px 18px;border-left:3px solid var(--primary-200);background:var(--primary-50);border-radius:0 var(--radius) var(--radius) 0;color:var(--gray-700)}.prose blockquote p:last-child{margin-bottom:0}.prose table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14px}.prose th,.prose td{border:1px solid var(--gray-200);padding:9px 12px;text-align:left}.prose th{background:var(--gray-50);font-weight:600}.notice{border-radius:var(--radius);padding:12px 15px;font-size:13.5px;margin:0 0 16px;border:1px solid var(--amber-200);background:linear-gradient(180deg,#fff,var(--amber-50));color:var(--amber-700)}.notice-quiet{border-color:var(--gray-200);background:var(--gray-50);color:var(--gray-600)}.landing{max-width:46rem;margin:0 auto}.price-panel{padding:0;overflow:hidden}.price-list{list-style:none;margin:0;padding:0}.price-row{display:flex;align-items:baseline;gap:10px;padding:15px 22px;border-top:1px solid var(--gray-100)}.price-row:first-child{border-top:0}.price-name{font-size:15.5px;font-weight:600}.price-unit{font-size:12.5px;color:var(--gray-500)}.price-amount{margin-left:auto;font-size:23px;font-weight:700;color:var(--primary-700);letter-spacing:-.015em;font-variant-numeric:tabular-nums;white-space:nowrap}.steps{list-style:none;margin:0;padding:0}.steps li{display:flex;gap:11px;align-items:flex-start;font-size:15px;color:var(--gray-700)}.steps li+li{margin-top:11px}.steps .n{flex:0 0 auto;display:grid;place-items:center;width:22px;height:22px;margin-top:3px;border-radius:999px;background:var(--primary-700);color:#fff;font-size:12px;font-weight:700}.link-row{margin:30px 0 0;font-size:13.5px;color:var(--gray-500);line-height:2}.link-row a{margin-right:4px}.link-row a:not(:last-child):after{content:" ·";color:var(--gray-400)}.cta{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:30px 24px;box-shadow:var(--shadow-md);margin:40px auto 0;max-width:34rem;text-align:center}.cta-inner{display:flex;flex-direction:column;align-items:center;gap:18px}.cta-body{min-width:0}.cta h2{margin:0 0 6px;font-size:18px}.cta p{margin:0;color:var(--gray-600);font-size:14.5px}.cta-qr{margin:0}.cta-qr img{width:220px;height:auto;border-radius:var(--radius);border:1px solid var(--gray-200);background:#fff;padding:6px}.cta-qr 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var(--gray-100);color:var(--gray-500);font-size:12.5px;line-height:1.65}.footer-copy{margin-top:10px;color:var(--gray-400);font-size:12.5px}.breadcrumb{font-size:13px;color:var(--gray-500);margin:0 0 14px}.breadcrumb a{color:var(--gray-500)}.breadcrumb a:hover{color:var(--primary-700)}.meta{display:flex;flex-wrap:wrap;gap:8px 16px;color:var(--gray-500);font-size:13px;margin:0 0 22px}.stack>*+*{margin-top:16px}.center{text-align:center}@media(max-width:720px){body{font-size:15px}.container{padding:0 18px}.panel{padding:20px}.cta{padding:24px 18px}.cta-qr img{width:260px;height:auto}.nav a{padding:7px 8px;font-size:13.5px}.brand-text small{display:none}.prose table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}.prose th,.prose td{padding:8px 10px}main{padding:28px 0 48px}.hero{padding:12px 0 26px}.hero-actions .button{flex:1 1 auto}.price-row{padding:13px 18px}.price-name{font-size:15px}.price-amount{font-size:20px}}