:root{--font-display:"Sora", "Noto Sans SC", system-ui, sans-serif;--font-body:"Manrope", "Noto Sans SC", system-ui, sans-serif;--r-sm:10px;--r-md:12px;--r-lg:16px;--r-xl:22px}:root,:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--teal:#00c98a;--teal-dark:#00b37b;--teal-soft:#00c98a24;--teal-softer:#00c98a12;--on-primary:#03140e;--primary-fill:linear-gradient(135deg, #5be8b4, #00d68f 45%, #00b377);--primary-fill-hover:linear-gradient(135deg, #4fe0aa, #00c984 45%, #00a56e);--mint:#2ee6a6;--ink:#03080b;--ink-2:#0b151a;--ink-line:#1a282d;--deep-border:#1f3236;--deep-ring:#10302a;--deep-glow:radial-gradient(60% 80% at 15% 0%, #00c98a29, transparent 70%), radial-gradient(50% 60% at 90% 100%, #0096a01a, transparent 70%);--on-dark:#eef6f3;--on-dark-muted:#93a7a2;--on-dark-soft:#b5c7c2;--on-dark-strong:#fff;--ground:#050a0d;--surface:#0c1519;--surface-2:#121e23;--input-bg:#0a1216;--header-bg:#050a0de0;--text:#eaf3f0;--text-2:#c3d1cd;--muted:#8fa29d;--line:#1e2c31;--line-soft:#172429;--line-strong:#2b3c42;--warn-bg:#fb923c29;--warn-text:#fdba74;--warn-strong:#fdba74;--danger:#f2937a;--danger-line:#4a2a23;--error-bg:#f2937a24;--error-text:#f6b09d;--step-off:#3a4c52;--cta-bg:var(--primary-fill);--cta-text:#03140e;--cta-sub:#0b3a2a;--cta-btn-bg:#03140e;--cta-btn-text:#2ee6a6;--cta-outline:#03140e73;--shadow-sm:0 1px 2px #0006;--shadow-md:0 12px 24px #00000059;--shadow-lg:0 30px 60px #00000080;--shadow-plan:0 20px 40px #00c98a1f}:root[data-theme=light]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--teal:#00875a;--teal-dark:#006e49;--teal-soft:#dff5ec;--teal-softer:#effaf5;--on-primary:#fff;--primary-fill:#00875a;--primary-fill-hover:#006e49;--mint:#3be0a3;--ink:#052a22;--ink-2:#0a3a30;--ink-line:#1b4a40;--deep-border:#1c5a4c;--deep-ring:#145244;--deep-glow:radial-gradient(60% 80% at 15% 0%, #3be0a31f, transparent 70%);--on-dark:#f2fbf7;--on-dark-muted:#a7c4bc;--on-dark-soft:#cfe6df;--on-dark-strong:#fff;--ground:#f4f8f6;--surface:#fff;--surface-2:#f0f5f3;--input-bg:#fff;--header-bg:#ffffffeb;--text:#10201d;--text-2:#33463f;--muted:#4a5e59;--line:#dce7e3;--line-soft:#e8efec;--line-strong:#c9d9d3;--warn-bg:#ffedd5;--warn-text:#7c2d12;--warn-strong:#c2410c;--danger:#9a3412;--danger-line:#e5cfc4;--error-bg:#fdece7;--error-text:#8a2c0e;--step-off:#9db3ac;--cta-bg:#00875a;--cta-text:#fff;--cta-sub:#d9f2ea;--cta-btn-bg:#fff;--cta-btn-text:#006e49;--cta-outline:#b7e6d6;--shadow-sm:0 1px 2px #062a2614;--shadow-md:0 12px 24px #062a2614;--shadow-lg:0 30px 60px #00000059;--shadow-plan:0 20px 40px #062a262e}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{background:var(--ground);color:var(--text);font-family:var(--font-body);-webkit-font-smoothing:antialiased;margin:0;font-size:15px;line-height:1.55}html[lang^=zh] body{font-family:Noto Sans SC,Manrope,system-ui,sans-serif}a{color:var(--teal)}a:hover{color:var(--teal-dark)}img{max-width:100%}button{font:inherit}:focus-visible{outline:2px solid var(--teal);outline-offset:2px}.container{max-width:1120px;margin:0 auto;padding:0 20px}.container-narrow{max-width:800px;margin:0 auto;padding:0 20px}.section{padding:calc(clamp(44px,5.5vw,76px)) 0}.section-white{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.section-dark{background:var(--deep-glow),var(--ink);color:var(--on-dark)}.checklist,.field,.section-head,.stack{flex-direction:column}.row,.stack{display:flex}.row{flex-wrap:wrap}.grid{gap:16px;display:grid}.grid-3{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.grid-4{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.grid-2{grid-template-columns:repeat(auto-fit,minmax(min(440px,100%),1fr))}.gap-8{gap:8px}.gap-12{gap:12px}.gap-16{gap:16px}.gap-24{gap:24px}.gap-32{gap:32px}.gap-48{gap:48px}.eyebrow{letter-spacing:.1em;text-transform:uppercase;color:var(--teal);font-size:12px;font-weight:800}.section-dark .eyebrow{color:var(--mint)}.h1{letter-spacing:-.022em;font-size:calc(clamp(30px,4.4vw,52px));line-height:1.12}.h1,.h2,.h3{font-family:var(--font-display);margin:0;font-weight:700}.h2{letter-spacing:-.018em;font-size:calc(clamp(23px,3vw,34px));line-height:1.18}.h3{font-size:18px;line-height:1.3}.lead{color:var(--muted);margin:0;font-size:15px;line-height:1.6}.section-dark .lead{color:var(--on-dark-soft)}.muted{color:var(--muted)}.small{font-size:13px}.tiny{font-size:12px}.mint{color:var(--mint)}.section-head{gap:12px;max-width:620px;margin-bottom:32px;display:flex}.center{text-align:center;margin-left:auto;margin-right:auto}.badge,.btn,.center,.icon-box{align-items:center}.btn{cursor:pointer;white-space:nowrap;border:1.5px solid #0000;border-radius:10px;justify-content:center;gap:8px;min-height:42px;padding:0 18px;font-size:14px;font-weight:700;text-decoration:none;transition:background-color .15s,color .15s,border-color .15s;display:inline-flex}.btn:disabled,.btn[aria-disabled=true]{opacity:.55;cursor:not-allowed}.btn-lg{border-radius:12px;min-height:48px;padding:0 22px;font-size:15px}.btn-block{width:100%;display:flex}.btn-primary{background:var(--primary-fill);color:var(--on-primary)}.btn-primary:hover{background:var(--primary-fill-hover);color:var(--on-primary)}.btn-mint{background:var(--mint);color:var(--ink);font-weight:800}.btn-mint:hover{filter:brightness(.94);color:var(--ink)}.btn-outline{border-color:var(--teal);color:var(--teal);background:0 0}.btn-outline:hover{background:var(--teal-softer);color:var(--teal-dark)}.btn-neutral{border-color:var(--line-strong);color:var(--text);background:var(--surface)}.btn-neutral:hover{border-color:var(--teal);color:var(--text)}.btn-dark-outline{border-color:var(--deep-border);color:var(--on-dark);background:0 0}.btn-dark-outline:hover{border-color:var(--mint);color:var(--on-dark-strong)}.btn-white{background:var(--cta-btn-bg);color:var(--cta-btn-text);font-weight:800}.btn-white:hover{filter:brightness(1.08);color:var(--cta-btn-text)}.btn-danger{border-color:var(--danger-line);color:var(--danger);background:var(--surface)}.btn-danger:hover{border-color:var(--danger);color:var(--danger)}.btn-link{min-height:40px;color:var(--teal);cursor:pointer;background:0 0;border:0;padding:0;font-weight:700}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px}.card-soft{background:var(--ground);border-radius:18px;padding:24px}.icon-box{background:var(--teal-soft);width:42px;height:42px;color:var(--teal);border-radius:12px;flex:none;justify-content:center}.badge,.icon-box{display:inline-flex}.badge{white-space:nowrap;font-size:12px;font-weight:800;font-family:var(--font-body);border-radius:999px;padding:3px 10px;line-height:1.5}.badge-soon{color:var(--warn-text);background:var(--warn-bg)}.badge-mint{color:var(--ink);background:var(--mint)}.badge-soft{color:var(--teal-dark);background:var(--teal-soft)}.badge-grey{color:var(--text-2);background:var(--surface-2)}.badge-plus{letter-spacing:.08em;color:var(--ink);background:var(--mint);border-radius:6px;padding:3px 8px;font-size:12px;font-weight:800}.field{gap:8px;display:flex}.label{font-size:14px;font-weight:700}.input{border:1.5px solid var(--line-strong);width:100%;min-height:44px;font:500 15px var(--font-body);color:var(--text);background:var(--input-bg);border-radius:10px;padding:0 13px}.input:focus{outline:2px solid var(--teal);outline-offset:1px;border-color:var(--teal)}.hint{color:var(--muted);font-size:13px}.check{color:var(--text-2);cursor:pointer;align-items:flex-start;gap:10px;font-size:14px;line-height:1.5;display:flex}.check input{width:18px;height:18px;accent-color:var(--teal);flex:none;margin:2px 0 0}.alert{border-radius:12px;padding:12px 14px;font-size:14px;line-height:1.5}.alert-error{background:var(--error-bg);color:var(--error-text)}.alert-success{background:var(--teal-soft);color:var(--teal-dark)}.alert-warn{background:var(--warn-bg);color:var(--warn-text)}.table-wrap{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow-x:auto}.table{border-collapse:collapse;width:100%;font-size:14px}.table td,.table th{text-align:left;vertical-align:middle;padding:11px 14px}.table thead tr{background:var(--ground)}.table thead th{color:var(--muted);font-weight:700}.table tbody tr{border-top:1px solid var(--line-soft)}.table tbody th{font-weight:600}.faq details{border-bottom:1px solid var(--line);padding:16px 0}.faq summary{cursor:pointer;justify-content:space-between;gap:16px;font-size:16px;font-weight:700;list-style:none;display:flex}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";color:var(--teal);font-weight:700}.faq details[open] summary:after{content:"−"}.faq p{color:var(--muted);margin:10px 0 0;font-size:14px;line-height:1.65}.checklist{gap:12px;margin:0;padding:0;list-style:none;display:flex}.checklist li{align-items:flex-start;gap:10px;display:flex}.checklist svg{flex:none;margin-top:3px}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}