:root{--ink:#1d1d1f;--ink-2:#424245;--ink-3:#6e6e73;--ink-4:#86868b;--line:#e8e8ed;--surface:#f5f5f7;--surface-2:#fafafc;--accent:#0071e3;--accent-bg:#f0f7ff;--pos:#1d8a45;--neg:#c7261a;--warn:#9a6200;--warn-bg:#fff8ec;--radius:14px;--font:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Noto Sans SC","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;--mono:"SF Mono",ui-monospace,"Cascadia Mono",Consolas,monospace}*{box-sizing:border-box}html{-webkit-font-smoothing:antialiased}body{margin:0;font-family:var(--font);color:var(--ink-2);background:radial-gradient(1200px 600px at 10% -10%,#e8f1ff 0,transparent 55%),radial-gradient(900px 500px at 100% 0,#f3f6fa 0,transparent 50%),#fff;line-height:1.6;min-height:100vh}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.container{width:min(1080px,calc(100% - 2.5rem));margin:0 auto}.site-header{position:-webkit-sticky;position:sticky;top:0;z-index:20;-webkit-backdrop-filter:saturate(180%) blur(14px);backdrop-filter:saturate(180%) blur(14px);background:rgba(255,255,255,.82);border-bottom:1px solid var(--line)}.nav{align-items:center;justify-content:space-between;padding:.9rem 0;gap:1rem}.brand,.nav{display:flex}.brand{flex-direction:column;gap:.1rem;color:var(--ink);text-decoration:none}.brand strong{font-size:1.05rem;letter-spacing:-.02em}.brand span{font-size:.75rem;color:var(--ink-3)}.nav-links{display:flex;gap:1rem;align-items:center;flex-wrap:wrap;font-size:.92rem}.nav-links a{color:var(--ink-2);text-decoration:none}.nav-links a:hover{color:var(--accent)}.btn{display:inline-flex;align-items:center;justify-content:center;border:none;border-radius:980px;padding:.7rem 1.2rem;font-weight:600;font-size:.95rem;cursor:pointer;transition:opacity .15s ease,transform .15s ease}.btn:hover{opacity:.92;text-decoration:none}.btn:active{transform:scale(.98)}.btn-primary{background:var(--accent);color:#fff}.btn-secondary{background:var(--surface);color:var(--ink);border:1px solid var(--line)}.btn-ghost{background:transparent;color:var(--accent)}.hero{padding:4.5rem 0 3rem;display:grid;grid-gap:1.25rem;gap:1.25rem;max-width:720px}.eyebrow{font-size:.8rem;font-weight:600;color:var(--accent);letter-spacing:.04em;text-transform:uppercase}.hero h1{margin:0;color:var(--ink);font-size:clamp(2.2rem,5vw,3.4rem);line-height:1.08;letter-spacing:-.035em;font-weight:700}.hero .lead{margin:0;font-size:1.15rem;color:var(--ink-3);max-width:38rem}.cta-row{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:.5rem}.disclaimer-banner{margin-top:1rem;padding:.85rem 1rem;border-radius:12px;background:var(--warn-bg);color:var(--warn);font-size:.9rem;border:1px solid #f0e0b8}.section{padding:2.5rem 0}.section h2{margin:0 0 .5rem;color:var(--ink);font-size:1.6rem;letter-spacing:-.02em}.section .sub{margin:0 0 1.5rem;color:var(--ink-3);max-width:40rem}.pricing{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-gap:1rem;gap:1rem}.price-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.4rem;display:flex;flex-direction:column;gap:.75rem}.price-card.featured{border-color:#b9dcff;box-shadow:0 8px 30px rgba(0,113,227,.08)}.price-card h3{margin:0;color:var(--ink)}.price{font-size:2rem;color:var(--ink);font-weight:700;letter-spacing:-.03em}.price span{font-size:.95rem;color:var(--ink-3);font-weight:500}.price-card ul{margin:0;padding-left:1.1rem;color:var(--ink-2);flex:1 1}.price-card li{margin:.35rem 0}.signal-list{display:grid;grid-gap:.85rem;gap:.85rem}.signal-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:1rem 1.1rem}.signal-item h3{margin:0 0 .35rem;font-size:1.05rem;color:var(--ink)}.signal-item p{margin:.35rem 0;color:var(--ink-3);font-size:.95rem}.tags{display:flex;flex-wrap:wrap;gap:.35rem;margin-top:.5rem}.tag{font-size:.72rem;font-weight:600;color:var(--accent);background:var(--accent-bg);padding:.2rem .5rem;border-radius:999px}.meta{font-size:.8rem;color:var(--ink-4)}.prose{max-width:720px}.prose h1{color:var(--ink);letter-spacing:-.02em}.prose h2{color:var(--ink);margin-top:2rem}.prose li,.prose p{color:var(--ink-2)}.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.25rem}.form{display:grid;grid-gap:.75rem;gap:.75rem;max-width:400px}.form input{border:1px solid var(--line);border-radius:10px;padding:.75rem .9rem;font:inherit}.form label{font-size:.85rem;color:var(--ink-3);font-weight:600}.muted{color:var(--ink-3)}.error,.muted{font-size:.9rem}.error{color:var(--neg)}.ok{color:var(--pos);font-size:.9rem}.site-footer{margin-top:4rem;border-top:1px solid var(--line);background:var(--surface-2);padding:2rem 0 2.5rem}.footer-grid{display:flex;justify-content:space-between;gap:1.5rem;flex-wrap:wrap;font-size:.9rem;color:var(--ink-3)}.footer-links,.kpi-row{display:flex;gap:1rem;flex-wrap:wrap}.kpi-row{margin-bottom:1rem}.kpi{background:var(--surface);border-radius:12px;padding:.85rem 1rem;min-width:140px}.kpi strong{display:block;color:var(--ink);font-size:1.2rem}.kpi span{font-size:.78rem;color:var(--ink-3)}@media (max-width:640px){.hero{padding-top:2.5rem}.nav{align-items:flex-start;flex-direction:column}}