:root{--bg:#fbfbfd;--surface:#fff;--text:#1d1d1f;--text-secondary:#6e6e73;--border:#e3e3e6;--border-hover:#d0d0d4;--accent:#0071e3;--accent-hover:#0077ed;--radius:20px;--max:980px;--font:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",Roboto,Helvetica,Arial,sans-serif}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#000;--surface:#1c1c1e;--text:#f5f5f7;--text-secondary:#a1a1a6;--border:#2a2a2c;--border-hover:#3a3a3c}}:root[data-theme=dark]{--bg:#000;--surface:#1c1c1e;--text:#f5f5f7;--text-secondary:#a1a1a6;--border:#2a2a2c;--border-hover:#3a3a3c}.seg{padding:2px;gap:2px;border:1px solid var(--border);border-radius:980px;background:var(--surface)}.seg,.seg button{display:inline-flex}.seg button{align-items:center;justify-content:center;width:30px;height:26px;border:none;border-radius:980px;background:transparent;color:var(--text-secondary);cursor:pointer;transition:background .18s ease,color .18s ease}.seg button:hover{color:var(--text)}.seg button[aria-pressed=true]{background:var(--accent);color:#fff}.seg button svg{width:15px;height:15px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;line-height:1.5}a{color:inherit;text-decoration:none}.container{max-width:var(--max);margin:0 auto;padding:0 22px}.nav{position:-webkit-sticky;position:sticky;top:0;z-index:10;height:52px;-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);background:color-mix(in srgb,var(--bg) 80%,transparent);border-bottom:1px solid var(--border)}.nav,.nav .container{display:flex;align-items:center}.nav .container{justify-content:space-between;width:100%}.nav .brand{font-weight:600;letter-spacing:-.01em}.hero{text-align:center;padding:88px 0 56px}.hero h1{font-size:clamp(40px,6vw,64px);line-height:1.05;letter-spacing:-.015em;font-weight:600}.hero p{margin-top:16px;font-size:clamp(19px,2.4vw,24px);color:var(--text-secondary)}.grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:22px;gap:22px;padding:20px 0 100px}@media (max-width:734px){.grid{grid-template-columns:1fr}}.card{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:22px;padding:48px 24px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}.card:hover{transform:translateY(-4px);border-color:var(--border-hover);box-shadow:0 12px 34px rgba(0,0,0,.1)}.iconbox{width:120px;height:120px;display:flex;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:28px;color:var(--text);background:var(--bg)}.card .title{font-size:22px;font-weight:600;letter-spacing:-.01em}.card .sub{font-size:15px;color:var(--text-secondary);margin-top:-14px}.detail{padding:72px 0 120px;text-align:center}.detail .iconbox{width:160px;height:160px;border-radius:36px;margin:0 auto 32px}.detail h1{font-size:clamp(40px,6vw,56px);letter-spacing:-.015em;font-weight:600}.detail .tagline{font-size:clamp(20px,2.6vw,28px);color:var(--text-secondary);margin-top:10px}.detail .price{font-size:21px;margin-top:28px}.detail .lede{margin:28px auto 0;font-size:19px;color:var(--text-secondary)}.detail .lede,.features{max-width:640px;text-align:left}.features{margin:44px auto 0;display:grid;grid-gap:2px;gap:2px}.features li{list-style:none;padding:18px 2px;border-bottom:1px solid var(--border);display:flex;gap:14px;align-items:baseline}.features li:before{content:"";flex:0 0 7px;height:7px;margin-top:8px;border-radius:50%;background:var(--accent)}.btn{display:inline-block;background:var(--accent);color:#fff;font-size:17px;font-weight:400;padding:12px 24px;border-radius:980px;border:none;cursor:pointer;transition:background .2s ease}.btn:hover{background:var(--accent-hover)}.btn-row{margin-top:40px;display:flex;gap:18px;justify-content:center;align-items:center}.link{color:var(--accent);font-size:17px}.link:hover{text-decoration:underline}.back{display:inline-block;margin-top:40px;color:var(--accent);font-size:17px}.back:hover{text-decoration:underline}.footer{border-top:1px solid var(--border);padding:28px 0;font-size:12px;color:var(--text-secondary)}