:root {
  --ink: #101b2d;
  --paper: #f7f6f1;
  --mist: #e7eaf0;
  --blue: #2774e6;
  --orange: #ff6b35;
  --muted: #627089;
  --line: #d8dde7;
  --display: Georgia, "Songti SC", serif;
  --body: "PingFang SC", "Hiragino Sans GB", sans-serif;
  --mono: "SF Mono", Menlo, monospace;
  --radius: 18px;
  --shadow: 0 24px 60px rgba(16, 27, 45, .15);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--body); line-height: 1.6; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.shell { width: min(1160px, calc(100% - 48px)); margin: auto; }
.nav { display: flex; align-items: center; justify-content: space-between; padding: 22px 0; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; gap: 10px; align-items: center; font-weight: 700; text-decoration: none; }
.brand img { width: 31px; height: 31px; border-radius: 9px; }
.nav-links { display: flex; gap: 18px; color: var(--muted); font-size: 14px; }
.hero { padding: 84px 0 74px; display: grid; grid-template-columns: 1.02fr .98fr; gap: 58px; align-items: center; }
.eyebrow { color: var(--orange); font: 700 12px/1 var(--mono); letter-spacing: .11em; text-transform: uppercase; }
h1, h2 { font-family: var(--display); letter-spacing: -.045em; line-height: 1.04; }
h1 { margin: 16px 0 22px; font-size: clamp(48px, 7vw, 88px); max-width: 730px; }
h2 { margin: 0 0 20px; font-size: clamp(32px, 4vw, 51px); }
.lede { max-width: 570px; margin: 0; color: var(--muted); font-size: 18px; }
.actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 30px; }
.button { display: inline-flex; min-height: 44px; align-items: center; padding: 10px 17px; border: 1px solid var(--ink); background: var(--ink); color: white; text-decoration: none; font-weight: 700; }
.button.alt { background: transparent; color: var(--ink); }
.signal { background: var(--ink); padding: 20px; box-shadow: var(--shadow); position: relative; overflow: hidden; }
.signal::before { content: ""; position: absolute; inset: 0; opacity: .2; background: repeating-linear-gradient(90deg, transparent 0 78px, #fff 79px 80px), repeating-linear-gradient(0deg, transparent 0 54px, #fff 55px 56px); }
.signal video, .signal img { position: relative; width: 100%; display: block; border: 1px solid rgba(255,255,255,.22); }
.signal-note { position: relative; color: #cdd8ec; font: 11px/1.4 var(--mono); margin-top: 13px; }
.section { padding: 82px 0; border-top: 1px solid var(--line); }
.section-intro { display: grid; grid-template-columns: .75fr 1.25fr; gap: 35px; margin-bottom: 34px; }
.section-intro p, .legal p, .legal li { color: var(--muted); }
.features { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--ink); }
.feature { min-height: 238px; padding: 24px 20px 18px 0; border-right: 1px solid var(--line); }
.feature:not(:first-child) { padding-left: 20px; }
.feature:last-child { border-right: 0; }
.key { display: inline-block; padding: 4px 7px; border: 1px solid var(--line); background: white; font: 11px var(--mono); }
.feature h3 { font: 700 19px/1.25 var(--display); margin: 20px 0 9px; }
.feature p { color: var(--muted); font-size: 14px; margin: 0; }
.privacy-strip { background: var(--orange); color: #20140f; padding: 42px 0; }
.privacy-strip .shell { display: flex; justify-content: space-between; gap: 36px; align-items: center; }
.privacy-strip p { max-width: 680px; margin: 0; font-size: 17px; }
.footer { padding: 32px 0 44px; color: var(--muted); font-size: 13px; }
.footer-row { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); padding-top: 22px; }
.legal { max-width: 780px; padding: 74px 0 100px; }
.legal h1 { font-size: clamp(42px, 6vw, 68px); }
.legal h2 { font-size: 30px; margin-top: 46px; }
.legal strong { color: var(--ink); }
.notice { border-left: 4px solid var(--orange); padding: 12px 18px; background: white; color: var(--muted); }

@media (max-width: 780px) {
  .shell { width: min(100% - 32px, 620px); }
  .nav-links { gap: 12px; font-size: 12px; }
  .hero, .section-intro { grid-template-columns: 1fr; gap: 32px; }
  .hero { padding: 55px 0; }
  .features { grid-template-columns: 1fr 1fr; }
  .feature:nth-child(2) { border-right: 0; }
  .feature:nth-child(n+3) { border-top: 1px solid var(--line); padding-top: 24px; }
  .privacy-strip .shell, .footer-row { display: block; }
  .privacy-strip .button { margin-top: 22px; }
}