:root{
  --ink:#16243a; --muted:#4a5a70; --line:#dbe3ee; --bg:#f7f9fc; --card:#ffffff;
  --brand:#1f3a5f; --brand-2:#2f6fb2; --accent:#f2c230; --ok:#1d7a52;
  --radius:14px; --max:1120px;
  font-family: system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--bg);line-height:1.6;font-size:17px}
a{color:var(--brand-2)}
a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:#fff;padding:8px;z-index:9}
/* header */
.site-header{background:rgba(255,255,255,.9);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5;backdrop-filter:saturate(1.2) blur(6px)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:19px}
.brand img{width:34px;height:34px}
.nav ul{list-style:none;display:flex;gap:22px;margin:0;padding:0;align-items:center}
.nav ul a{text-decoration:none;color:var(--muted);font-size:15.5px}
.nav ul a:hover,.nav ul a[aria-current=page]{color:var(--ink)}
.nav ul a[aria-current=page]{border-bottom:2px solid var(--accent)}
@media(max-width:820px){.nav ul li.hide-sm{display:none}.nav ul{gap:14px}}
/* buttons */
.btn{display:inline-block;padding:12px 20px;border-radius:10px;text-decoration:none;font-weight:600;border:1px solid var(--brand);font-size:16px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:#17304f}
.btn-ghost{background:#fff;color:var(--brand)}
.btn-sm{padding:8px 14px;font-size:15px}
/* hero */
.hero{background:linear-gradient(180deg,#eef4fb 0%,#f7f9fc 70%);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:64px 0 72px}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr;padding:40px 0}}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);border:1px solid var(--line);background:#fff;border-radius:999px;padding:4px 12px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block}
h1{font-size:46px;line-height:1.12;margin:16px 0 14px;letter-spacing:-.5px}
@media(max-width:600px){h1{font-size:34px}}
h2{font-size:30px;line-height:1.2;margin:0 0 12px}
h3{font-size:20px;margin:0 0 6px}
.lead{font-size:19px;color:var(--muted);max-width:560px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 12px}
.fine{font-size:14px;color:var(--muted)}
/* product visual */
.visual{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 10px 30px rgba(31,58,95,.07)}
.v-top{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted);margin-bottom:12px}
.tag{font-size:12px;border:1px solid var(--line);border-radius:999px;padding:2px 9px;background:#fff;color:var(--muted)}
.tag-ex{border-color:#e9d48a;background:#fffbea;color:#6b5600}
.review{border:1px solid var(--line);border-radius:12px;padding:14px;background:#fbfcfe}
.r-head{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.avatar{width:32px;height:32px;border-radius:50%;background:#e2e9f3;display:grid;place-items:center;font-weight:700;color:var(--brand);font-size:14px}
.stars{color:#b58900;letter-spacing:1px;font-size:14px}
.reply{margin-top:10px;border:1px solid #cfe0f2;border-left:3px solid var(--brand-2);border-radius:10px;padding:12px 14px;background:#f3f8fd}
.reply .who{font-size:13px;color:var(--brand);font-weight:600;margin-bottom:4px}
.v-foot{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
.mini{border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:14px;background:#fff}
.mini b{display:block;font-size:13px;color:var(--muted);font-weight:600}
/* sections */
section.block{padding:64px 0}
section.alt{background:linear-gradient(180deg,#f7f9fc 0%,#f1f5fa 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media(max-width:860px){.grid-3,.grid-2{grid-template-columns:1fr}}
.box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.box p{margin:6px 0 0;color:var(--muted)}
.num{width:30px;height:30px;border-radius:8px;border:1px solid var(--line);display:grid;place-items:center;font-weight:700;color:var(--brand);background:#f3f7fc;margin-bottom:10px}
.section-head{max-width:700px;margin-bottom:28px}
.section-head p{color:var(--muted);margin:0}
.stat{font-size:15px;color:var(--muted)}
.stat strong{display:block;font-size:28px;color:var(--ink)}
.src{font-size:13px;color:var(--muted)}
/* pricing */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:stretch}
@media(max-width:900px){.price-grid{grid-template-columns:1fr}}
.plan{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;display:flex;flex-direction:column}
.plan.featured{border-color:var(--brand)}
.plan .price{font-size:40px;font-weight:800;margin:6px 0 0}
.plan .per{font-size:15px;color:var(--muted)}
.plan ul{padding-left:20px;margin:14px 0 20px;color:var(--ink)}
.plan li{margin:6px 0}
.plan .btn{margin-top:auto;text-align:center}
.badge{display:inline-block;font-size:12px;font-weight:700;border-radius:999px;padding:2px 10px;background:#fff7d6;border:1px solid #ecd27a;color:#6b5600}
/* faq */
details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:10px}
summary{cursor:pointer;font-weight:600}
details p{color:var(--muted);margin:10px 0 2px}
/* prose */
.prose{max-width:760px}
.prose h2{margin-top:36px;font-size:24px}
.prose p,.prose li{color:#2b3a50}
.note{border:1px solid var(--line);border-left:3px solid var(--accent);background:#fff;border-radius:10px;padding:12px 16px;font-size:15px;color:var(--muted)}
.todo{border:1px dashed #d9a400;background:#fffbea;border-radius:10px;padding:10px 14px;font-size:14px;color:#6b5600}
.page-hero{background:linear-gradient(180deg,#eef4fb 0%,#f7f9fc 100%);border-bottom:1px solid var(--line);padding:48px 0 36px}
.page-hero h1{font-size:40px;margin:8px 0}
/* samples */
.sample{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}
.sample .meta{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:10px;flex-wrap:wrap}
.why{font-size:14px;color:var(--muted);margin-top:10px}
/* footer */
.site-footer{border-top:1px solid var(--line);background:#fff;padding:36px 0;margin-top:0;font-size:15px;color:var(--muted)}
.foot{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}
@media(max-width:700px){.foot{grid-template-columns:1fr}}
.foot ul{list-style:none;padding:0;margin:0}.foot li{margin:4px 0}
.foot a{color:var(--muted);text-decoration:none}.foot a:hover{color:var(--ink)}
.cta-band{background:linear-gradient(120deg,#eaf2fb,#f3f8f6);border:1px solid var(--line);border-radius:18px;padding:32px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
/* pricing: founding banner + compare table */
.founding{display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap;background:#fff;border:2px solid var(--brand);border-radius:16px;padding:22px 24px}
.founding p{color:var(--muted)}
.compare-wrap{overflow-x:auto}
.compare{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;font-size:15px}
.compare th,.compare td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--line);vertical-align:top}
.compare th{background:#f3f7fc}
.compare td:first-child{color:var(--muted);width:50%}
.compare tr:last-child td{border-bottom:0}
@media(max-width:520px){.nav ul li:not(:last-child){display:none}.nav{gap:8px}}