:root{
  --ink:#16181d; --muted:#5b616e; --line:#e5e7eb; --bg:#ffffff;
  --soft:#f6f7f9; --accent:#2f5bd6; --accent-ink:#1c3a91; --ok:#137a4b; --bad:#b42318;
  --maxw:900px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0; background:var(--bg); color:var(--ink);
  font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
a{color:var(--accent-ink)}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace; font-size:.92em}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 20px}

header.top{border-bottom:1px solid var(--line); position:sticky; top:0; background:rgba(255,255,255,.92); backdrop-filter:saturate(1.2) blur(6px); z-index:5}
header.top .wrap{display:flex; align-items:center; justify-content:space-between; padding:14px 20px}
.brand{font-weight:700; letter-spacing:.02em; font-size:18px; text-decoration:none; color:var(--ink)}
.brand .dot{color:var(--accent)}
nav a{margin-left:20px; text-decoration:none; color:var(--muted); font-size:14px}
nav a:hover{color:var(--ink)}
nav a.on{color:var(--ink); font-weight:600}

.hero{padding:70px 0 40px; text-align:center}
.hero h1{font-size:40px; line-height:1.12; margin:0 0 16px; letter-spacing:-.02em; max-width:15ch; margin-inline:auto}
.hero p.lede{font-size:18px; color:var(--muted); max-width:560px; margin:0 auto}
.hero p.trust{font-size:14px; color:var(--ok); max-width:560px; margin:14px auto 0; font-weight:500}
.cta-row{margin-top:28px; display:flex; gap:12px; justify-content:center; flex-wrap:wrap}
.btn{display:inline-block; padding:11px 20px; border-radius:8px; text-decoration:none; font-weight:600; font-size:15px; border:1px solid transparent; cursor:pointer}
.btn.primary{background:var(--accent); color:#fff}
.btn.primary:hover{background:var(--accent-ink)}
.btn.ghost{border-color:var(--line); color:var(--ink)}
.btn.ghost:hover{border-color:var(--muted)}

section{padding:48px 0; border-top:1px solid var(--line)}
.kicker{font-size:13px; text-transform:uppercase; letter-spacing:.08em; color:var(--accent); font-weight:700; margin:0 0 8px}
section h2{font-size:27px; margin:0 0 10px; letter-spacing:-.01em; max-width:22ch}
.lead{font-size:16.5px; color:var(--muted); max-width:640px; margin:0 0 24px}

/* concept visual: same URL, two truths */
.contrast{display:grid; grid-template-columns:1fr auto 1fr; align-items:center; gap:14px; margin-top:8px}
@media(max-width:620px){ .contrast{grid-template-columns:1fr} .hero h1{font-size:31px} }
.cc{border:1px solid var(--line); border-radius:12px; overflow:hidden}
.cc-h{background:var(--soft); padding:11px 14px; border-bottom:1px solid var(--line); font-size:13.5px; font-weight:600}
.cc-h span{display:block; font-weight:400; color:var(--muted); font-size:12.5px}
.cc-b{padding:18px 14px; text-align:center}
.cc-price{font-size:30px; font-weight:700; letter-spacing:-.02em}
.cc-price em{display:block; font-style:normal; font-size:13px; font-weight:600; margin-top:4px}
.ok .cc-price{color:var(--ok)} .bad .cc-price{color:var(--bad)}
.cc-vs{text-align:center; color:var(--muted); font-size:13px; font-weight:600; white-space:nowrap}
@media(max-width:620px){ .cc-vs{transform:rotate(90deg); padding:4px 0} }
.cap{color:var(--muted); font-size:14.5px; margin:16px 0 0; text-align:center; max-width:620px; margin-inline:auto}

.paths{display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-top:36px}
@media(max-width:620px){ .paths{grid-template-columns:1fr} }
.path{border:1px solid var(--line); border-radius:14px; padding:22px; text-decoration:none; color:inherit; display:block; transition:border-color .15s}
.path:hover{border-color:var(--accent)}
.path h3{margin:0 0 6px; font-size:17px}
.path p{margin:0 0 12px; font-size:14px; color:var(--muted)}
.path .go{font-size:14px; font-weight:600; color:var(--accent-ink)}

.tiles{display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin-top:8px}
@media(max-width:620px){ .tiles{grid-template-columns:1fr} }
.tile{border:1px solid var(--line); border-radius:12px; padding:18px}
.tile .ic{font-size:22px; line-height:1}
.tile h3{margin:10px 0 5px; font-size:15.5px}
.tile p{margin:0; font-size:14px; color:var(--muted)}

.concierge{margin-top:34px; text-align:center; background:var(--soft); border:1px solid var(--line); border-radius:14px; padding:26px 20px}
.concierge b{font-size:17px}
.concierge p{color:var(--muted); font-size:14px; margin:6px auto 16px; max-width:460px}

.grid{display:grid; grid-template-columns:1fr 1fr; gap:16px}
@media(max-width:620px){ .grid{grid-template-columns:1fr} }
.card{border:1px solid var(--line); border-radius:12px; padding:16px 18px}
.card h3{margin:0 0 5px; font-size:15.5px}
.card p{margin:0; font-size:14px; color:var(--muted)}

.install{background:var(--soft); border:1px solid var(--line); border-radius:10px; padding:14px 16px; margin:22px 0 0; overflow-x:auto}
.install code{color:var(--ink); white-space:pre}
.install .muted{color:var(--muted); font-size:13px; display:block; margin-top:8px}

/* demo page */
.legend{display:grid; grid-template-columns:1fr 1fr; gap:14px; margin:6px 0 26px}
@media(max-width:620px){ .legend{grid-template-columns:1fr} }
.legend div{border:1px solid var(--line); border-left:3px solid var(--accent); border-radius:8px; padding:12px 14px; font-size:14px; color:var(--muted)}
.legend b{color:var(--ink); display:block; margin-bottom:2px}
.frame{border:1px solid var(--line); border-radius:12px; overflow:hidden; background:var(--soft)}
.frame iframe{width:100%; height:760px; border:0; display:block; background:#fff}

.note{font-size:13px; color:var(--muted); margin-top:14px}
footer{border-top:1px solid var(--line); padding:26px 0 46px; color:var(--muted); font-size:13.5px; margin-top:20px}
footer .wrap{display:flex; justify-content:space-between; flex-wrap:wrap; gap:8px}

/* how it works */
.flow{display:grid; grid-template-columns:1fr auto 1fr auto 1fr; align-items:stretch; gap:10px; margin-top:10px}
@media(max-width:640px){ .flow{grid-template-columns:1fr} .flow .arrow{display:none} }
.step{border:1px solid var(--line); border-radius:12px; padding:18px}
.step .n{display:inline-flex; align-items:center; justify-content:center; width:26px; height:26px; border-radius:999px; background:var(--accent); color:#fff; font-size:13px; font-weight:700; margin-bottom:10px}
.step h4{margin:0 0 4px; font-size:15px}
.step p{margin:0; font-size:13.5px; color:var(--muted)}
.arrow{display:flex; align-items:center; justify-content:center; color:var(--muted); font-weight:700}