:root{--bg:#f7f8fa;--paper:#fff;--ink:#1c1e21;--muted:#5f6368;--line:#e3e6ea;--accent:#1a73e8;--accent-2:#1557b0;--accent-soft:#e8f0fe;--good:#1e7e4a;--good-soft:#e6f4ea;--warn:#8a5a10;--warn-soft:#fbf1dc;--shadow:0 1px 2px rgba(0,0,0,.05),0 10px 30px rgba(28,30,33,.06)}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,"Helvetica Neue",Helvetica,Arial,system-ui,sans-serif;font-size:16px;line-height:1.65}
a{color:var(--accent)}
h1,h2,h3{line-height:1.2;margin:0 0 .5em;letter-spacing:-.01em}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header.top{border-bottom:1px solid var(--line);background:rgba(247,248,250,.92);backdrop-filter:blur(8px);position:sticky;top:0;z-index:5}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;text-decoration:none;color:var(--ink)}
.brand .mark{width:30px;height:30px;border-radius:8px;background:var(--accent);color:#fff;display:grid;place-items:center;font-size:15px}
nav a{margin-left:18px;color:var(--ink);text-decoration:none;font-size:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:9px;padding:11px 20px;font-size:15px;font-weight:600;cursor:pointer;text-decoration:none;font-family:inherit;line-height:1.3;transition:.15s}
.btn.primary{background:var(--accent);color:#fff}.btn.primary:hover{background:var(--accent-2)}
.btn.ghost{background:transparent;border-color:var(--line);color:var(--ink)}.btn.ghost:hover{background:#fff}
.btn.big{padding:14px 26px;font-size:16px}
.badge{display:inline-flex;border-radius:999px;padding:3px 10px;font-size:12px;font-weight:600;background:var(--accent-soft);color:var(--accent-2)}
.hero{padding:64px 0 32px;text-align:center}
.hero h1{font-size:44px;max-width:20ch;margin:12px auto}
.hero p.lead{font-size:18px;color:var(--muted);max-width:60ch;margin:0 auto 22px}
@media(max-width:640px){.hero h1{font-size:30px}}
.panel{background:var(--paper);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:22px}
section.block{padding:40px 0}
section.block h2{font-size:30px;margin-bottom:18px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:860px){.grid3{grid-template-columns:1fr}}
.card{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:22px}
.card h3{font-size:18px}.card p{color:var(--muted);font-size:15px;margin:0}
.price .amt{font-size:36px;font-weight:700}.price .amt small{font-size:15px;color:var(--muted);font-weight:400}
.price ul{padding-left:1.2em;margin:10px 0 16px;font-size:15px}.price li{margin-bottom:4px}
.price.hot{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.faq details{border-bottom:1px solid var(--line);padding:12px 0}.faq summary{cursor:pointer;font-weight:600}.faq p{margin:8px 0 0;color:var(--muted);font-size:15px}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:860px){.steps{grid-template-columns:1fr}}
.steps .card::before{counter-increment:s;content:counter(s);display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;margin-bottom:10px}
.compare{width:100%;border-collapse:collapse;font-size:15px;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.compare th,.compare td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left}
.compare th{background:#f1f3f4;font-size:13px;color:var(--muted)}
.compare tr:last-child td{border-bottom:0}
.tablewrap{overflow-x:auto}
footer{border-top:1px solid var(--line);margin-top:40px;padding:26px 0;color:var(--muted);font-size:13px}footer a{color:var(--muted);margin-right:14px}
.article{max-width:760px;margin:40px auto;padding:0 20px}.article h1{font-size:34px}.article h2{font-size:22px;margin-top:32px}.article p,.article li{font-size:16.5px}
.article img{border:1px solid var(--line);border-radius:10px}
.note{background:var(--warn-soft);color:var(--warn);border-radius:9px;padding:10px 14px;font-size:14px}
code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:14px;background:#f1f3f4;border-radius:6px;padding:2px 6px}
pre{padding:12px 14px;overflow-x:auto}