:root {
  color-scheme: light dark;
  --bg: #0d1015;
  --card: #151a22;
  --ink: #f5f7fb;
  --muted: #aeb7c5;
  --line: #2a323e;
  --blue: var(--ink);
  --purple: #833ab4;
  --pink: #c13584;
  --orange: #fcaf45;
  --accent-gradient: linear-gradient(135deg, #833ab4 0%, #c13584 35%, #e1306c 58%, #fd1d1d 76%, #fcaf45 100%);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.install-shell {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 36px 0 64px;
}

.back-link { color: var(--muted); text-decoration: none; font-weight: 700; }

.install-card {
  margin-top: 22px;
  padding: clamp(24px, 5vw, 48px);
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--card);
  box-shadow: 0 24px 80px rgba(0,0,0,.24);
}

.brand-mark { display: block; width: 56px; height: 56px; border-radius: 17px; background: transparent url('./extension/icons/icon128.png') center / contain no-repeat; }
.eyebrow { margin: 22px 0 8px; color: var(--muted); font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(30px, 6vw, 48px); line-height: 1.1; }
.lead { margin: 18px 0 0; color: var(--muted); font-size: 17px; line-height: 1.7; }

.preview-notice {
  margin: 24px 0 16px;
  padding: 14px 16px;
  border: 1px solid rgba(225,48,108,.38);
  border-radius: 12px;
  background: rgba(225,48,108,.12);
  color: #ffd6e4;
  line-height: 1.55;
}

.store-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border: 1px solid #fff;
  border-radius: 12px;
  background: var(--accent-gradient);
  color: white;
  font-weight: 850;
  text-decoration: none;
}

.store-button:hover { filter: brightness(1.08); }

.legal-links { margin: 16px 0 0; color: var(--muted); line-height: 1.55; }
.legal-links a { color: var(--ink); font-weight: 750; }

.install-steps { display: grid; gap: 12px; margin: 30px 0 0; padding: 0; list-style: none; }
.install-steps li { display: grid; grid-template-columns: 38px 1fr; gap: 12px; padding: 15px; border: 1px solid var(--line); border-radius: 14px; }
.install-steps span { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 11px; background: var(--ink); color: var(--bg); font-weight: 850; }
.install-steps strong { display: block; margin: 1px 0 4px; }
.install-steps p { margin: 0; color: var(--muted); line-height: 1.55; }
code { padding: 2px 5px; border-radius: 5px; background: rgba(255,255,255,.08); color: var(--ink); }

.policy-content { display: grid; gap: 20px; margin-top: 26px; line-height: 1.65; }
.policy-content section { display: grid; gap: 8px; }
.policy-content h2 { margin: 0; font-size: 19px; }
.policy-content p { margin: 0; color: var(--muted); }
.policy-content ul { margin: 0; padding-left: 20px; color: var(--muted); }
.policy-content li + li { margin-top: 6px; }

@media (max-width: 560px) {
  .install-shell { width: min(100% - 20px, 760px); padding-top: 20px; }
  .install-card { border-radius: 18px; }
  .store-button { width: 100%; }
}