:root {
  --chrome: #0a0a0a;
  --chrome-elevated: #141414;
  --sky: #5ba9d9;
  --leaf: #6bb86b;
  --gradient-icon: linear-gradient(180deg, var(--sky) 0%, var(--leaf) 100%);
  --gradient-soft-bg: linear-gradient(180deg, #e3f0fa 0%, #e8f5ea 55%, #f4fbf5 100%);
  --text: #0f172a;
  --text-on-dark: rgba(255, 255, 255, 0.92);
  --muted: #475569;
  --muted-on-dark: rgba(255, 255, 255, 0.65);
  --card: #ffffff;
  --radius-icon: clamp(1.35rem, 5vw, 1.85rem);
  --radius-card: 1.75rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--chrome);
  min-height: 100vh;
}

/* ——— Home ——— */
.page-home {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.hero {
  flex-shrink: 0;
  padding: 2.5rem 1.25rem 2.75rem;
  text-align: center;
  background:
    radial-gradient(ellipse 120% 80% at 50% 0%, rgba(91, 169, 217, 0.18) 0%, transparent 55%),
    radial-gradient(ellipse 100% 60% at 50% 100%, rgba(107, 184, 107, 0.12) 0%, transparent 50%),
    var(--chrome);
}

.hero-inner {
  max-width: 36rem;
  margin: 0 auto;
}

.logo-frame {
  display: inline-block;
  padding: 0.35rem;
  margin-bottom: 1.35rem;
  border-radius: var(--radius-icon);
  background: var(--gradient-icon);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.12),
    0 12px 40px rgba(0, 0, 0, 0.45),
    0 8px 28px rgba(91, 169, 217, 0.25);
}

.logo-img {
  display: block;
  width: clamp(5.5rem, 22vw, 7.5rem);
  height: auto;
  border-radius: calc(var(--radius-icon) - 4px);
  vertical-align: middle;
}

.site-title {
  margin: 0;
  font-size: clamp(1.85rem, 5.5vw, 2.45rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  color: var(--text-on-dark);
}

.tagline {
  margin: 0.85rem 0 0;
  font-size: 1.125rem;
  color: var(--muted-on-dark);
  max-width: 26rem;
  margin-left: auto;
  margin-right: auto;
}

.gradient-rule {
  height: 3px;
  width: min(12rem, 55vw);
  margin: 0 auto;
  border-radius: 999px;
  background: var(--gradient-icon);
  opacity: 0.85;
}

.home-main {
  flex: 1;
  background: var(--gradient-soft-bg);
  padding: 2rem 0 0;
  display: flex;
  flex-direction: column;
}

.home-main .wrap {
  max-width: 42rem;
  margin: 0 auto;
  padding: 0 1.25rem 2rem;
  flex: 1;
}

.home-main .chrome-band {
  margin-top: auto;
}

.card {
  background: var(--card);
  border-radius: var(--radius-card);
  padding: 2rem 1.75rem;
  text-align: center;
  box-shadow:
    0 1px 3px rgba(15, 23, 42, 0.06),
    0 14px 36px rgba(91, 169, 217, 0.08);
  border: 1px solid rgba(91, 169, 217, 0.15);
}

.card-lead {
  margin: 0 0 1.35rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.btn-play {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 1.65rem;
  border-radius: 999px;
  border: 2px solid transparent;
  color: #fff !important;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  background:
    linear-gradient(var(--chrome), var(--chrome)) padding-box,
    var(--gradient-icon) border-box;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-play:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.2);
}

.btn-play:active {
  transform: translateY(0);
}

.btn-note {
  margin-top: 1.15rem;
  font-size: 0.875rem;
  color: var(--muted);
}

/* Full-width footer strip (matches logo outer chrome) */
.chrome-band {
  background: var(--chrome);
  padding: 1.35rem 1.25rem max(1.75rem, env(safe-area-inset-bottom));
  text-align: center;
}

.chrome-band-inner a {
  color: var(--text-on-dark);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(107, 184, 107, 0.45);
  padding-bottom: 2px;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.chrome-band-inner a:hover {
  color: #fff;
  border-bottom-color: var(--leaf);
}

.chrome-band-inner a:focus-visible {
  outline: 2px solid var(--sky);
  outline-offset: 4px;
}

/* ——— Privacy policy ——— */
.policy-page {
  background: var(--gradient-soft-bg);
  color: var(--text);
}

.policy-masthead {
  background: var(--chrome);
  padding: 1.25rem 1.25rem 1.5rem;
  text-align: center;
}

.policy-masthead-inner {
  max-width: 40rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.policy-masthead .logo-frame {
  margin-bottom: 0;
  padding: 0.25rem;
}

.policy-masthead .logo-img {
  width: clamp(3rem, 12vw, 4rem);
}

.policy-masthead-title {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-on-dark);
  letter-spacing: -0.02em;
}

.policy-masthead .gradient-rule {
  margin-top: 0.25rem;
}

.policy-page .wrap {
  max-width: 40rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.policy-panel {
  background: var(--card);
  border-radius: var(--radius-card);
  padding: 2rem 1.5rem 2.25rem;
  border: 1px solid rgba(107, 184, 107, 0.14);
  box-shadow: 0 12px 32px rgba(91, 169, 217, 0.07);
}

.policy-page .back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--sky);
  text-decoration: none;
}

.policy-page .back:hover {
  color: #3d8ec4;
}

.policy-page .back:focus-visible {
  outline: 2px solid var(--leaf);
  outline-offset: 3px;
  border-radius: 4px;
}

.policy-page h1 {
  font-size: 1.65rem;
  margin: 0 0 0.35rem;
  letter-spacing: -0.03em;
}

.policy-page .muted {
  color: var(--muted);
  font-size: 0.9375rem;
  margin-bottom: 0.25rem;
}

.policy-page section {
  margin-top: 1.65rem;
}

.policy-page h2 {
  font-size: 1.125rem;
  margin: 0 0 0.35rem;
}

.policy-page h2::after {
  content: "";
  display: block;
  height: 3px;
  width: min(7rem, 45%);
  margin-top: 0.4rem;
  margin-bottom: 0.15rem;
  border-radius: 999px;
  background: var(--gradient-icon);
}

.policy-page p,
.policy-page ul {
  margin: 0;
}

.policy-page ul {
  padding-left: 1.25rem;
}

.policy-page li {
  margin-top: 0.5rem;
}

.policy-page .chrome-band {
  margin-top: 2rem;
}

a:focus-visible {
  outline: 2px solid var(--sky);
  outline-offset: 2px;
}