:root{--ink:#0d1526;--ink-2:#41506b;--ink-3:#6b7a94;--line:#e4e9f2;--line-2:#eef2f8;--bg:#fff;--bg-alt:#f6f8fc;--brand:#2563eb;--brand-dark:#1d4ed8;--brand-soft:#eef4ff;--cyan:#22d3ee;--green:#12a150;--hero-1:#070d1a;--hero-2:#0e1b34;--radius:18px;--radius-sm:12px;--shadow-sm:0 1px 2px rgba(13,21,38,.05),0 1px 3px rgba(13,21,38,.04);--shadow-md:0 10px 24px -8px rgba(13,21,38,.12),0 4px 8px -4px rgba(13,21,38,.06);--shadow-lg:0 28px 60px -20px rgba(13,21,38,.28);--wrap:1160px;--font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;--mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace}*,:after,:before{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}[id]{scroll-margin-top:86px}body{margin:0;font-family:var(--font);font-size:16px;line-height:1.65;color:var(--ink-2);background:var(--bg);-webkit-font-smoothing:antialiased}h1,h2,h3{color:var(--ink);line-height:1.2;margin:0;font-weight:700;letter-spacing:-.02em}h1{font-size:clamp(1.85rem,3.4vw,2.9rem)}h2{font-size:clamp(1.55rem,2.8vw,2.2rem)}h3{font-size:1.075rem;font-weight:650}p{margin:0}dd,dl,ol,ul{margin:0;padding:0;list-style:none}a{color:inherit;text-decoration:none}svg{height:100%;display:block}.wrap,svg{width:100%}.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}.wrap-narrow{max-width:840px}.site-header{position:-webkit-sticky;position:sticky;top:0;z-index:60;background:hsla(0,0%,100%,.86);backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line-2)}.header-inner{display:flex;align-items:center;gap:24px;height:66px}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:750;color:var(--ink);letter-spacing:-.01em}.brand-mark{width:32px;height:32px;flex:0 0 32px;display:grid;place-items:center;padding:7px;border-radius:10px;color:#fff;background:linear-gradient(135deg,var(--brand),var(--cyan));box-shadow:0 4px 12px -3px rgba(37,99,235,.5)}.brand-name{font-size:1.1rem}.nav{display:none;margin-left:auto;gap:30px;font-size:.925rem;font-weight:550;color:var(--ink-3)}.nav a{transition:color .18s}.nav a:hover{color:var(--brand)}@media (min-width:900px){.nav{display:flex}}.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}@media (min-width:900px){.header-actions{margin-left:0}}.lang-btn{display:inline-flex;align-items:center;gap:7px;padding:8px 13px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink-2);font:inherit;font-size:.875rem;font-weight:600;cursor:pointer;transition:border-color .18s,color .18s,background .18s}.lang-btn svg{width:16px;height:16px}.lang-btn:hover{border-color:#c9d6ea;color:var(--brand);background:var(--brand-soft)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 24px;border:1px solid transparent;border-radius:var(--radius-sm);font:inherit;font-size:.95rem;font-weight:650;cursor:pointer;white-space:nowrap;transition:transform .18s,box-shadow .18s,background .18s,border-color .18s,color .18s}.btn svg{width:18px;height:18px;flex:0 0 18px}.btn-sm{padding:9px 16px;font-size:.875rem}.btn-block{width:100%}.btn-primary{background:linear-gradient(135deg,var(--brand),#3b82f6);color:#fff;box-shadow:0 6px 16px -6px rgba(37,99,235,.6)}.btn-primary:hover{background:linear-gradient(135deg,var(--brand-dark),var(--brand));transform:translateY(-1px);box-shadow:0 10px 22px -8px rgba(37,99,235,.65)}.btn-ghost{background:hsla(0,0%,100%,.08);color:#eaf1ff;border-color:hsla(0,0%,100%,.22)}.btn-ghost:hover{background:hsla(0,0%,100%,.15);transform:translateY(-1px)}.btn-outline{background:#fff;color:var(--brand);border-color:#c8d8f5}.btn-outline:hover{background:var(--brand-soft);border-color:var(--brand);transform:translateY(-1px)}.hero{position:relative;overflow:hidden;background:radial-gradient(900px 420px at 12% -10%,rgba(34,211,238,.16),transparent 60%),radial-gradient(720px 380px at 92% 6%,rgba(37,99,235,.28),transparent 62%),linear-gradient(168deg,var(--hero-1) 0,var(--hero-2) 58%,#122341 100%);color:#c3cfe4;padding:76px 0 92px}.hero:after{content:"";inset:0;opacity:.5;background-image:linear-gradient(hsla(0,0%,100%,.045) 1px,transparent 0),linear-gradient(90deg,hsla(0,0%,100%,.045) 1px,transparent 0);background-size:56px 56px;mask-image:radial-gradient(720px 460px at 50% 22%,#000 15%,transparent 78%);-webkit-mask-image:radial-gradient(720px 460px at 50% 22%,#000 15%,transparent 78%)}.hero-glow,.hero:after{position:absolute;pointer-events:none}.hero-glow{width:520px;height:520px;left:-140px;bottom:-260px;border-radius:50%;background:rgba(37,99,235,.2);filter:blur(120px)}.hero-grid{position:relative;z-index:2;display:grid;grid-gap:52px;gap:52px;align-items:start}@media (min-width:1000px){.hero-grid{grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:64px;align-items:center}}.hero-copy .pill{display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;margin-bottom:26px;background:hsla(0,0%,100%,.07);border:1px solid hsla(0,0%,100%,.16);font-size:.78rem;font-weight:650;letter-spacing:.06em;text-transform:uppercase;color:#a9c3e8}.pill .dot{width:7px;height:7px;border-radius:50%;background:#34d399;box-shadow:0 0 0 4px rgba(52,211,153,.18)}.hero h1{color:#fff;margin-bottom:22px;text-wrap:balance}.hero h1 .grad{background:linear-gradient(96deg,#7dd3fc,var(--cyan) 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18px;border:0;border-radius:10px;cursor:pointer;background:var(--brand);color:#fff;font:inherit;font-size:.895rem;font-weight:650;transition:background .18s,transform .18s}.copy-btn svg{width:16px;height:16px}.copy-btn:hover{background:var(--brand-dark)}.copy-btn.is-done{background:var(--green)}.pay-note{display:flex;gap:11px;margin:18px 0 4px;font-size:.895rem;color:var(--ink-2)}.pay-note svg{width:19px;height:19px;flex:0 0 19px;margin-top:3px;color:var(--green)}.section{padding:88px 0}.section-alt{background:var(--bg-alt);border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}.sec-head{max-width:660px;margin:0 auto 52px;text-align:center}.sec-head .tag{display:inline-block;padding:6px 14px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:.775rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.sec-head h2{margin-bottom:14px;text-wrap:balance}.sec-head p{color:var(--ink-3);font-size:1.03rem}.plans{display:grid;grid-gap:26px;gap:26px;max-width:880px;margin:0 auto}@media (min-width:840px){.plans{grid-template-columns:1fr 1fr}}.plan{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 30px;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s,border-color .2s}.plan:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cfdcf1}.plan-featured{border:2px solid var(--brand);box-shadow:0 18px 40px -18px rgba(37,99,235,.35)}.plan-featured:hover{box-shadow:0 24px 46px -18px rgba(37,99,235,.42)}.plan-ribbon{position:absolute;top:-13px;right:24px;padding:6px 15px;border-radius:999px;background:linear-gradient(135deg,var(--brand),#3b82f6);color:#fff;font-size:.73rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;box-shadow:0 6px 14px -6px rgba(37,99,235,.7)}.plan-icon{width:50px;height:50px;padding:13px;margin-bottom:20px;border-radius:14px;background:var(--brand-soft);color:var(--brand)}.plan h3{font-size:1.16rem;margin-bottom:6px}.price{display:flex;align-items:baseline;gap:9px}.price .amount{font-family:var(--mono);font-size:3.15rem;font-weight:700;color:var(--ink);letter-spacing:-.03em;line-height:1}.price .unit{font-size:1.3rem;font-weight:600;color:var(--ink-3)}.price .unit,.quota{font-family:var(--mono)}.quota{align-self:flex-start;display:inline-block;margin:16px 0 4px;padding:7px 15px;border-radius:999px;background:rgba(18,161,80,.1);color:#0d7f3f;font-size:1.02rem;font-weight:700}.quota span{font-family:var(--font);font-size:.85rem;font-weight:600}.plan hr{border:0;border-top:1px solid var(--line-2);margin:24px 0}.ticks{display:grid;grid-gap:12px;gap:12px;margin-bottom:28px;flex:1 1}.ticks li{position:relative;padding-left:27px;font-size:.925rem;color:var(--ink-2)}.ticks li:before{content:"";position:absolute;left:0;top:4px;width:17px;height:17px;border-radius:50%;background-color:rgba(18,161,80,.12);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2312a150' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 13 4 4L19 7'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:50%;background-size:11px 11px}.cards{display:grid;grid-gap:22px;gap:22px}@media (min-width:800px){.cards{grid-template-columns:repeat(3,1fr)}}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s,border-color .2s}.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cfdcf1}.card-icon{width:48px;height:48px;padding:12px;margin-bottom:18px;border-radius:13px;background:var(--brand-soft);color:var(--brand)}.card h3{margin-bottom:9px}.card p{color:var(--ink-3);margin-bottom:20px;flex:1 1}.card p,.link{font-size:.925rem}.link{display:inline-flex;align-items:center;gap:7px;color:var(--brand);font-weight:650}.link svg{width:15px;height:15px;transition:transform .18s}.link:hover svg{transform:translateX(3px)}.site-footer{background:#0b1220;color:#93a4c0;padding:52px 0 44px;margin-top:0}.footer-inner{display:grid;grid-gap:22px;gap:22px;justify-items:center;text-align:center}@media (min-width:860px){.footer-inner{grid-template-columns:auto 1fr auto;align-items:center;justify-items:start;text-align:left;gap:32px}}.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff;font-weight:750}.footer-brand .brand-mark{width:28px;height:28px;flex:0 0 28px;padding:6px;border-radius:9px}.footer-copy{font-size:.845rem;color:#7d8fae}.footer-links{display:flex;flex-wrap:wrap;gap:22px;justify-content:center;font-size:.875rem;font-weight:550}.footer-links a{transition:color .18s}.footer-links a:hover,.toast{color:#fff}.toast{position:fixed;left:50%;bottom:34px;z-index:90;display:flex;align-items:center;gap:10px;padding:14px 24px;border-radius:13px;background:#0d1526;font-size:.925rem;font-weight:600;box-shadow:0 20px 40px -14px rgba(0,0,0,.5);opacity:0;transform:translate(-50%,16px);pointer-events:none;transition:opacity .25s,transform .25s}.toast svg{width:18px;height:18px;color:#34d399}.toast.is-open{opacity:1;transform:translate(-50%)}html[lang^=zh] body{letter-spacing:.01em}html[lang^=zh] h1,html[lang^=zh] h2,html[lang^=zh] h3{letter-spacing:0}.nf{min-height:70vh;display:grid;place-items:center;text-align:center;padding:80px 24px}.nf h1{font-size:2rem;margin-bottom:14px}.nf p{color:var(--ink-3);margin-bottom:28px;max-width:46ch}.copy-btn-outline{background:#fff;color:var(--brand);border:2px solid #c8d8f5}.copy-btn-outline:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}.copy-btn-outline.is-done{background:var(--green);border-color:var(--green);color:#fff}.tag{display:inline-block;padding:6px 14px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:.775rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.sec-head .tag{margin-bottom:16px}.boot{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:var(--bg-alt)}.boot-spinner{width:44px;height:44px;border-radius:50%;border:4px solid #dbe4f3;border-top:4px solid var(--brand);animation:boot-spin .8s linear infinite}.boot p{color:var(--ink-3);font-size:.9rem}@keyframes boot-spin{to{transform:rotate(1turn)}}@media (prefers-reduced-motion:reduce){.boot-spinner{animation-duration:2s}}.trust{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:44px 36px;text-align:center;box-shadow:var(--shadow-sm)}.trust-icon{width:56px;height:56px;padding:15px;margin:0 auto 20px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--cyan));color:#fff;box-shadow:0 8px 20px -8px rgba(37,99,235,.6)}.trust h2{margin-bottom:14px}.trust>p{color:var(--ink-3);font-size:1rem;max-width:56ch;margin:0 auto}.stats{display:grid;grid-template-columns:repeat(2,1fr);grid-gap:28px 16px;gap:28px 16px;margin-top:36px;padding-top:32px;border-top:1px solid var(--line-2)}@media (min-width:720px){.stats{grid-template-columns:repeat(4,1fr)}}.stat-value{font-family:var(--mono);font-size:1.75rem;font-weight:700;color:var(--brand);letter-spacing:-.02em;line-height:1.1}.stat-label{font-size:.85rem;color:var(--ink-3);margin-top:6px}