:root{
  --bg:#f6fbfb; --ink:#0f2930; --muted:#5c7076; --brand:#0d7771;
  --brand2:#11a39a; --card:#ffffff; --line:#dbe9e8; --soft:#eaf7f6;
  --warn:#fff7df; --danger:#fff0ee; --shadow:0 14px 40px rgba(20,55,60,.09);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:min(1120px,calc(100% - 36px));margin:0 auto}
header{position:sticky;top:0;z-index:20;background:rgba(246,251,251,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(219,233,232,.9)}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:18px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;color:var(--ink)}
.mark{width:42px;height:42px;border-radius:14px;display:block;object-fit:cover;background:#fff;box-shadow:var(--shadow)}
.navlinks{display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;padding:11px 16px;font-weight:750;cursor:pointer;background:var(--brand);color:#fff;box-shadow:0 9px 24px rgba(13,119,113,.18)}
.btn:hover{background:#08645f;text-decoration:none}
.btn.secondary{background:#fff;color:var(--brand);border:1px solid var(--line);box-shadow:none}
.btn[disabled]{opacity:.48;cursor:not-allowed}
.hero{padding:72px 0 42px}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:36px;align-items:center}
.eyebrow{display:inline-block;padding:7px 11px;border-radius:999px;background:var(--soft);color:var(--brand);font-weight:800;font-size:13px}
h1{font-size:clamp(38px,6vw,68px);line-height:1.02;margin:17px 0 18px;letter-spacing:-.045em}
h2{font-size:clamp(27px,4vw,40px);line-height:1.12;margin:0 0 14px;letter-spacing:-.025em}
h3{margin:0 0 8px}
.lead{font-size:19px;color:var(--muted);max-width:760px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.mock{background:linear-gradient(150deg,#092e34,#124f51);padding:22px;border-radius:26px;color:#fff;box-shadow:var(--shadow);transform:rotate(1.5deg)}
.mock-card{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:18px;padding:18px;margin-top:14px}
.video-frame{aspect-ratio:9/16;max-height:390px;width:min(220px,100%);margin:0 auto;border-radius:22px;background:linear-gradient(180deg,#a6efd4,#daf8eb);display:grid;place-items:center;font-size:76px;position:relative;overflow:hidden}
.video-frame:after{content:"Dental tip • 9:16";position:absolute;bottom:18px;background:rgba(8,46,50,.78);padding:7px 11px;border-radius:999px;font-size:12px;font-weight:700}
section{padding:58px 0}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}
.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 6px 24px rgba(24,70,73,.04)}
.icon{width:46px;height:46px;border-radius:14px;background:var(--soft);display:grid;place-items:center;font-size:22px;margin-bottom:16px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:28px}
.step{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px}
.stepnum{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800;margin-bottom:13px}
.notice{background:var(--warn);border:1px solid #f1d990;border-radius:18px;padding:18px}
footer{border-top:1px solid var(--line);padding:28px 0 44px;margin-top:40px}
.footer{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;color:var(--muted)}
.legal{padding:42px 0}
.legal article{background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px;box-shadow:var(--shadow)}
.legal h1{font-size:40px}
.legal h2{font-size:23px;margin-top:28px}
.meta{color:var(--muted);font-size:14px}
.app-shell{padding:42px 0}
.dashboard{display:grid;grid-template-columns:320px 1fr;gap:20px}
.panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:0 6px 24px rgba(24,70,73,.04)}
.account{display:flex;align-items:center;gap:12px;padding:13px;border:1px solid var(--line);border-radius:14px}
.dot{width:10px;height:10px;border-radius:50%;background:#b9c9c8}
.dot.ok{background:#26b36a}
.field{margin:15px 0}
label{display:block;font-size:13px;font-weight:800;margin-bottom:7px}
input,select,textarea{width:100%;border:1px solid #ccdedd;border-radius:11px;padding:11px 12px;font:inherit;background:#fff;color:var(--ink)}
textarea{min-height:108px;resize:vertical}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.check{display:flex;gap:10px;align-items:flex-start;margin:12px 0}
.check input{width:auto;margin-top:5px}
.status{padding:10px 12px;border-radius:12px;background:var(--soft);color:var(--brand);font-size:14px}
.small{font-size:13px;color:var(--muted)}
hr{border:0;border-top:1px solid var(--line);margin:22px 0}
@media (max-width:850px){
  .hero-grid,.dashboard{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  .navlinks a:not(.btn){display:none}
}
@media (max-width:520px){
  .steps,.row{grid-template-columns:1fr}
  .hero{padding-top:42px}
}