/* ==========================================================================
   SunRiseSet Support Site
   Bilingual, dual-theme (light/dark) stylesheet.
   No build step, no dependencies. Mobile-first.
   ========================================================================== */

/* --- Design tokens --- */
:root {
  /* Brand */
  --color-sun-1: #fbbf24;
  --color-sun-2: #f97316;
  --color-sun-3: #ea580c;
  --color-moon-1: #818cf8;
  --color-moon-2: #4f46e5;
  --color-twilight: #0ea5e9;
  --color-civil: #38bdf8;
  --color-nautical: #6366f1;
  --color-astro: #1e293b;

  /* Surfaces (light) */
  --bg: #fff8ed;
  --bg-soft: #fff3df;
  --bg-card: #ffffff;
  --bg-alt: #fef3e2;
  --bg-elevated: #ffffff;
  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.16);

  /* Text (light) */
  --text: #0f172a;
  --text-soft: #334155;
  --text-muted: #64748b;

  /* Accents */
  --accent: #ea580c;
  --accent-hover: #c2410c;
  --accent-on: #ffffff;

  /* Effects */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px -8px rgba(234, 88, 12, 0.18);
  --shadow-lg: 0 24px 60px -16px rgba(234, 88, 12, 0.25);
  --gradient-sun: linear-gradient(135deg, #fbbf24 0%, #f97316 60%, #ea580c 100%);
  --gradient-night: linear-gradient(180deg, #fef3e2 0%, #fff8ed 100%);
  --gradient-hero: radial-gradient(
      ellipse at 80% 0%,
      rgba(251, 191, 36, 0.22),
      transparent 60%
    ),
    radial-gradient(
      ellipse at 0% 100%,
      rgba(99, 102, 241, 0.12),
      transparent 55%
    );

  /* Layout */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --container: 1120px;
  --header-h: 64px;
}

[data-theme="dark"] {
  --bg: #0b1120;
  --bg-soft: #111a2e;
  --bg-card: #131c33;
  --bg-alt: #0f1729;
  --bg-elevated: #182241;
  --border: rgba(148, 163, 184, 0.12);
  --border-strong: rgba(148, 163, 184, 0.22);

  --text: #f1f5f9;
  --text-soft: #cbd5e1;
  --text-muted: #94a3b8;

  --accent: #fb923c;
  --accent-hover: #f97316;
  --accent-on: #1a1207;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px -8px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 24px 60px -16px rgba(251, 146, 60, 0.25);
  --gradient-night: linear-gradient(180deg, #0b1120 0%, #111a2e 100%);
  --gradient-hero: radial-gradient(
      ellipse at 80% 0%,
      rgba(251, 146, 60, 0.18),
      transparent 60%
    ),
    radial-gradient(
      ellipse at 0% 100%,
      rgba(99, 102, 241, 0.18),
      transparent 55%
    );
}

/* --- Reset --- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background 0.3s ease, color 0.3s ease;
}
img,
svg {
  max-width: 100%;
  display: block;
}
a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover {
  color: var(--accent-hover);
}
button {
  font-family: inherit;
  cursor: pointer;
}
ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
h1,
h2,
h3,
h4 {
  margin: 0;
  line-height: 1.25;
  color: var(--text);
  letter-spacing: -0.01em;
}
h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.025em;
}
h2 {
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  font-weight: 700;
}
h3 {
  font-size: 1.15rem;
  font-weight: 700;
}
p {
  margin: 0 0 1em;
  color: var(--text-soft);
}

/* --- Skip link --- */
.skip-link {
  position: absolute;
  inset-inline-start: 8px;
  top: -40px;
  background: var(--accent);
  color: var(--accent-on);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 8px;
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 28px);
}
.section {
  padding-block: clamp(56px, 9vw, 112px);
}
.section-alt {
  background: var(--bg-alt);
}
.section-head {
  max-width: 720px;
  margin: 0 auto 48px;
  text-align: center;
}
.section-head .section-eyebrow {
  display: inline-block;
  margin-bottom: 14px;
}
.section-eyebrow {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(234, 88, 12, 0.08);
  border-radius: 999px;
}
[data-theme="dark"] .section-eyebrow {
  background: rgba(251, 146, 60, 0.14);
}
.section-lead {
  margin-top: 14px;
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.2s ease,
    background 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}
.btn-lg {
  padding: 14px 26px;
  font-size: 1rem;
}
.btn-primary {
  background: var(--gradient-sun);
  color: #ffffff;
  box-shadow: var(--shadow-md);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
  color: #ffffff;
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-ghost:hover {
  background: var(--bg-card);
  color: var(--text);
}
.icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.icon-btn:hover {
  background: var(--bg-card);
  border-color: var(--accent);
}
.theme-toggle .icon-moon {
  display: none;
}
[data-theme="dark"] .theme-toggle .icon-sun {
  display: none;
}
[data-theme="dark"] .theme-toggle .icon-moon {
  display: inline-block;
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 8px 10px;
}
.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: saturate(150%) blur(12px);
  backdrop-filter: saturate(150%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: var(--header-h);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
}
.brand:hover {
  color: var(--text);
}
.brand-mark {
  width: 32px;
  height: 32px;
  display: inline-grid;
  place-items: center;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-text strong {
  font-size: 1rem;
}
.brand-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
}
.primary-nav {
  margin-inline-start: 16px;
  flex: 1;
}
.primary-nav ul {
  display: flex;
  gap: 22px;
}
.primary-nav a {
  color: var(--text-soft);
  font-weight: 500;
  font-size: 0.95rem;
}
.primary-nav a:hover {
  color: var(--accent);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.header-cta {
  display: inline-flex;
}
.lang-toggle .lang-current {
  color: var(--accent);
}
.lang-toggle .lang-alt {
  color: var(--text-muted);
}
.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 14px 20px 22px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.mobile-nav a {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-weight: 500;
}
.mobile-nav a:hover {
  background: var(--bg-card);
  color: var(--accent);
}
.mobile-cta {
  margin-top: 8px;
  justify-content: center;
}

/* --- Hero --- */
.hero {
  position: relative;
  padding-block: clamp(48px, 9vw, 96px);
  background: var(--gradient-hero), var(--gradient-night);
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  inset: auto -10% -50% auto;
  width: 60%;
  aspect-ratio: 1;
  background: radial-gradient(
    circle,
    rgba(251, 191, 36, 0.35),
    transparent 70%
  );
  filter: blur(40px);
  pointer-events: none;
}
[data-theme="dark"] .hero-glow {
  background: radial-gradient(
    circle,
    rgba(251, 146, 60, 0.22),
    transparent 70%
  );
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(24px, 5vw, 64px);
  align-items: center;
  position: relative;
  z-index: 1;
}
.eyebrow {
  display: inline-block;
  padding: 5px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-soft);
  margin-bottom: 18px;
}
.hero-copy .lead {
  font-size: 1.1rem;
  color: var(--text-soft);
  max-width: 540px;
  margin-bottom: 28px;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.hero-meta li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}
.dot-orange {
  background: var(--color-sun-2);
}
.dot-blue {
  background: var(--color-moon-2);
}
.dot-purple {
  background: #a855f7;
}

/* Hero visual */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 380px;
}
.globe {
  position: relative;
  width: min(420px, 100%);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(
      circle at 30% 30%,
      #1e3a5f 0%,
      #0b1d36 60%,
      #061224 100%
    );
  box-shadow: inset 0 0 60px rgba(0, 0, 0, 0.5),
    0 24px 80px -16px rgba(15, 23, 42, 0.55);
  overflow: hidden;
}
[data-theme="dark"] .globe {
  background: radial-gradient(
    circle at 30% 30%,
    #2a4d7a 0%,
    #14253f 60%,
    #0a1426 100%
  );
}
.terminator {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(251, 191, 36, 0.12) 0%,
    rgba(251, 191, 36, 0.05) 40%,
    transparent 50%,
    rgba(15, 23, 42, 0.5) 60%,
    rgba(15, 23, 42, 0.85) 100%
  );
  mix-blend-mode: screen;
}
[data-theme="dark"] .terminator {
  mix-blend-mode: lighten;
}
.terminator.civil {
  background: linear-gradient(
    100deg,
    transparent 35%,
    rgba(56, 189, 248, 0.12) 45%,
    transparent 55%
  );
}
.terminator.nautical {
  background: linear-gradient(
    98deg,
    transparent 28%,
    rgba(99, 102, 241, 0.14) 40%,
    transparent 50%
  );
}
.terminator.astro {
  background: linear-gradient(
    96deg,
    transparent 22%,
    rgba(99, 102, 241, 0.2) 35%,
    transparent 45%
  );
}
.sun-marker,
.moon-marker {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  box-shadow: 0 0 20px currentColor;
}
.sun-marker {
  top: 28%;
  left: 32%;
  background: var(--color-sun-2);
  color: var(--color-sun-2);
  animation: pulse 3s ease-in-out infinite;
}
.moon-marker {
  top: 55%;
  left: 62%;
  background: var(--color-moon-1);
  color: var(--color-moon-1);
  width: 12px;
  height: 12px;
  animation: pulse 3.6s ease-in-out infinite;
}
.meridian {
  position: absolute;
  top: 5%;
  bottom: 5%;
  left: 50%;
  width: 1px;
  background: rgba(148, 163, 184, 0.25);
  transform: rotate(8deg);
  transform-origin: center;
}
@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.85;
  }
  50% {
    transform: scale(1.18);
    opacity: 1;
  }
}
.hero-cards {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.info-card {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  box-shadow: var(--shadow-md);
  min-width: 150px;
}
.info-card-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.info-card-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  margin-top: 2px;
}
.info-card-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.info-card {
  top: 6%;
  left: -6%;
}
.info-card-alt {
  bottom: 8%;
  right: -2%;
  background: linear-gradient(
    135deg,
    rgba(251, 191, 36, 0.18),
    rgba(249, 115, 22, 0.12)
  );
  border-color: rgba(234, 88, 12, 0.3);
}
[data-theme="dark"] .info-card-alt {
  background: linear-gradient(
    135deg,
    rgba(251, 146, 60, 0.18),
    rgba(124, 58, 237, 0.12)
  );
}

/* --- Features --- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.feature {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  transition: transform 0.18s ease, box-shadow 0.18s ease,
    border-color 0.18s ease;
}
.feature:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}
.feature-icon {
  width: 44px;
  height: 44px;
  display: inline-grid;
  place-items: center;
  border-radius: 14px;
  margin-bottom: 16px;
}
.feature-icon-orange {
  background: rgba(251, 146, 60, 0.14);
  color: #f97316;
}
.feature-icon-blue {
  background: rgba(56, 189, 248, 0.14);
  color: #0ea5e9;
}
.feature-icon-purple {
  background: rgba(168, 85, 247, 0.14);
  color: #a855f7;
}
.feature-icon-green {
  background: rgba(16, 185, 129, 0.14);
  color: #10b981;
}
.feature-icon-pink {
  background: rgba(236, 72, 153, 0.14);
  color: #ec4899;
}
.feature-icon-amber {
  background: rgba(245, 158, 11, 0.14);
  color: #f59e0b;
}
.feature h3 {
  margin-bottom: 8px;
}
.feature p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* --- Screenshots --- */
.screenshot-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 28px;
}
.screenshot {
  margin: 0;
  text-align: center;
}
.phone-frame {
  position: relative;
  width: 100%;
  max-width: 240px;
  margin: 0 auto 14px;
  padding: 12px 10px;
  border-radius: 36px;
  background: linear-gradient(160deg, #1f2937 0%, #0f172a 100%);
  box-shadow: var(--shadow-lg);
}
.phone-screen {
  position: relative;
  border-radius: 26px;
  background: var(--bg-soft);
  aspect-ratio: 9 / 19;
  overflow: hidden;
}
.phone-status {
  height: 22px;
  background: transparent;
}
.phone-map .map-area,
.phone-screen .map-area {
  position: relative;
  margin: 0 8px;
  height: 40%;
  border-radius: 14px;
  background: radial-gradient(
      circle at 30% 30%,
      #1e3a5f 0%,
      #0b1d36 60%,
      #061224 100%
    );
  overflow: hidden;
}
.phone-map .terminator,
.phone-screen .terminator {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(251, 191, 36, 0.18) 0%,
    transparent 50%,
    rgba(15, 23, 42, 0.85) 100%
  );
}
.phone-map .civil,
.phone-screen .terminator.civil {
  background: linear-gradient(
    100deg,
    transparent 35%,
    rgba(56, 189, 248, 0.18) 45%,
    transparent 55%
  );
}
.phone-map .sun-marker {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #f97316;
  box-shadow: 0 0 14px #f97316;
  top: 30%;
  left: 32%;
}
.phone-map .moon-marker {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #818cf8;
  box-shadow: 0 0 12px #818cf8;
  top: 55%;
  left: 62%;
}
.phone-chart .mini-chart {
  display: block;
  margin: 16px auto 0;
  width: 88%;
  height: 60%;
}
.phone-card {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.phone-card-fab {
  background: var(--gradient-sun);
  color: #fff;
  border: none;
  bottom: 80px;
  width: max-content;
  left: 50%;
  transform: translateX(-50%);
  font-weight: 700;
}
.marker-list {
  padding: 8px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.marker-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 0.78rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.marker-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.marker-dot-orange {
  background: #f97316;
}
.marker-dot-blue {
  background: #0ea5e9;
}
.marker-dot-green {
  background: #10b981;
}
.marker-dot-purple {
  background: #a855f7;
}
.screenshot figcaption {
  font-size: 0.95rem;
  color: var(--text-soft);
  font-weight: 500;
}

/* --- Accuracy --- */
.accuracy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 5vw, 56px);
  align-items: start;
}
.accuracy-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 18px 0;
}
.accuracy-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.accuracy-tag {
  color: var(--text-soft);
  font-weight: 500;
}
.accuracy-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.accuracy-value small {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 2px;
}
.accuracy-note {
  padding: 14px 18px;
  background: rgba(234, 88, 12, 0.06);
  border-inline-start: 3px solid var(--accent);
  border-radius: 6px;
  font-size: 0.92rem;
  color: var(--text-soft);
}
[data-theme="dark"] .accuracy-note {
  background: rgba(251, 146, 60, 0.08);
}
.accuracy-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.accuracy-card h3 {
  margin-bottom: 14px;
}
.factor-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.factor-list li {
  position: relative;
  padding-inline-start: 22px;
  color: var(--text-soft);
}
.factor-list li::before {
  content: "•";
  position: absolute;
  inset-inline-start: 4px;
  color: var(--accent);
  font-weight: 700;
}

/* --- FAQ --- */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 4px 18px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.faq-item[open] {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 16px 0;
  font-weight: 600;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--accent);
  font-weight: 400;
  transition: transform 0.2s ease;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-body {
  padding: 0 0 18px;
  color: var(--text-soft);
}

/* --- Contact / CTA --- */
.section-cta {
  background: linear-gradient(
      135deg,
      rgba(251, 191, 36, 0.12) 0%,
      rgba(249, 115, 22, 0.06) 60%,
      transparent 100%
    ),
    var(--bg);
}
[data-theme="dark"] .section-cta {
  background: linear-gradient(
      135deg,
      rgba(251, 146, 60, 0.16) 0%,
      rgba(124, 58, 237, 0.08) 60%,
      transparent 100%
    ),
    var(--bg);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(24px, 5vw, 56px);
  align-items: start;
}
.contact-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}
.contact-list li {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 14px;
  align-items: baseline;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.contact-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.contact-value {
  font-weight: 600;
  color: var(--text);
}
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-md);
}
.contact-card h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}
.contact-card p {
  font-size: 0.95rem;
}
.contact-meta {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0;
}

/* Single-column contact layout (when download card is removed) */
.contact-grid-single {
  grid-template-columns: 1fr !important;
}
.contact-grid-single > div {
  max-width: 720px;
}

/* --- Footer --- */
.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding-block: 48px 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: clamp(20px, 4vw, 48px);
  margin-bottom: 32px;
}
.footer-brand p {
  margin: 8px 0 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}
.footer-grid h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 14px;
  font-weight: 700;
}
.footer-grid ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-grid a {
  color: var(--text-soft);
  font-size: 0.92rem;
}
.footer-grid a:hover {
  color: var(--accent);
}
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
}

/* --- Responsive --- */
@media (max-width: 920px) {
  .hero-grid,
  .accuracy-grid,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    text-align: start;
  }
  .hero-visual {
    order: -1;
    min-height: 320px;
  }
}
@media (max-width: 760px) {
  .primary-nav {
    display: none;
  }
  .header-cta {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .mobile-nav.is-open {
    display: flex;
  }
  .info-card {
    left: 4%;
    top: 4%;
    min-width: 130px;
    padding: 10px 12px;
  }
  .info-card-value {
    font-size: 1.1rem;
  }
  .info-card-alt {
    right: 4%;
    bottom: 6%;
    min-width: 130px;
  }
  .contact-list li {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}
@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }
  .section {
    padding-block: 56px;
  }
  .info-card {
    position: relative;
    inset: auto;
    margin: 8px 12px 0;
  }
  .info-card-alt {
    margin: 8px 12px 0;
  }
  .hero-cards {
    position: relative;
    inset: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 16px;
    padding: 0 12px;
  }
  .hero-visual {
    min-height: auto;
  }
  .globe {
    width: 80%;
    margin: 0 auto;
  }
}

/* --- Accessibility --- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}