/* 抖阴官方网站 — 全局样式 */
:root {
  --bg: #07070f;
  --bg-soft: #0d0d18;
  --bg-elevated: #141422;
  --bg-card: #1a1a2c;
  --bg-card-hover: #222238;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --text: #f3f4f8;
  --text-muted: #9b9db3;
  --text-dim: #6e7088;
  --cyan: #00f2ea;
  --magenta: #fe2c55;
  --pink: #ff5c8a;
  --violet: #7b5cff;
  --gold: #e0b84a;
  --blue: #3d8bfd;
  --gradient-brand: linear-gradient(135deg, #00f2ea 0%, #7b5cff 48%, #fe2c55 100%);
  --gradient-cta: linear-gradient(90deg, #fe2c55 0%, #ff5c8a 55%, #ff8fab 100%);
  --gradient-glow: radial-gradient(ellipse at 30% 20%, rgba(0, 242, 234, 0.18), transparent 50%),
    radial-gradient(ellipse at 80% 10%, rgba(254, 44, 85, 0.16), transparent 45%),
    radial-gradient(ellipse at 60% 80%, rgba(123, 92, 255, 0.12), transparent 50%);
  --shadow-soft: 0 12px 40px rgba(0, 0, 0, 0.45);
  --shadow-phone: 0 28px 60px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.06);
  --radius: 16px;
  --radius-sm: 10px;
  --nav-h: 64px;
  --adbar-h: 58px;
  --container: 1120px;
  --font: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  min-height: 100vh;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

button {
  font: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(7, 7, 15, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand img {
  height: 36px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  padding: 8px 14px;
  font-size: 14px;
  color: var(--text-muted);
  border-radius: 999px;
  transition: color 0.2s, background 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--gradient-cta);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 8px 24px rgba(254, 44, 85, 0.35);
  transition: transform 0.2s, box-shadow 0.2s;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(254, 44, 85, 0.45);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--line);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

/* ========== Download Ad Bar ========== */
.download-adbar {
  position: sticky;
  top: var(--nav-h);
  z-index: 999;
  background: linear-gradient(90deg, rgba(20, 20, 34, 0.98), rgba(26, 18, 32, 0.98));
  border-bottom: 1px solid var(--line);
  min-height: var(--adbar-h);
  display: flex;
  align-items: center;
  justify-content: center;
}

.download-adbar .adbar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 8px 0;
  width: 100%;
}

.adbar-label {
  flex-shrink: 0;
  font-size: 12px;
  color: var(--text-dim);
  padding-right: 4px;
  white-space: nowrap;
}

.app-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px 6px 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  white-space: nowrap;
  flex-shrink: 0;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.app-chip:hover {
  border-color: rgba(0, 242, 234, 0.35);
  background: rgba(0, 242, 234, 0.08);
  transform: translateY(-1px);
}

.app-chip img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: cover;
}

.app-chip .chip-meta {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.app-chip .chip-name {
  font-size: 13px;
  font-weight: 600;
}

.app-chip .chip-tag {
  font-size: 10px;
  color: var(--cyan);
}

.app-chip.primary {
  border-color: rgba(254, 44, 85, 0.45);
  background: rgba(254, 44, 85, 0.12);
}

.app-chip.primary .chip-tag {
  color: var(--pink);
}

.app-chip.hot .chip-tag {
  color: var(--gold);
}

/* ========== Hero ========== */
.hero {
  position: relative;
  padding: 48px 0 64px;
  overflow: hidden;
  background: var(--gradient-glow), var(--bg);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, transparent 70%, var(--bg) 100%),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 48px,
      rgba(255, 255, 255, 0.015) 48px,
      rgba(255, 255, 255, 0.015) 49px
    );
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(0, 242, 234, 0.3);
  background: rgba(0, 242, 234, 0.08);
  color: var(--cyan);
  font-size: 12px;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(28px, 4.5vw, 44px);
  line-height: 1.25;
  font-weight: 760;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.hero h1 .grad {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--text-muted);
  margin-bottom: 18px;
  max-width: 36em;
}

.hero-intro {
  color: var(--text-muted);
  margin-bottom: 22px;
  max-width: 40em;
  font-size: 15px;
}

.hero-points {
  display: grid;
  gap: 10px;
  margin-bottom: 28px;
}

.hero-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
}

.hero-points li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 7px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--gradient-brand);
  box-shadow: 0 0 12px rgba(0, 242, 234, 0.5);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: 14px;
  font-weight: 650;
  font-size: 15px;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.btn-primary {
  background: var(--gradient-cta);
  color: #fff;
  box-shadow: 0 14px 32px rgba(254, 44, 85, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(254, 44, 85, 0.45);
}

.btn-ghost {
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: rgba(0, 242, 234, 0.4);
  background: rgba(0, 242, 234, 0.06);
}

.hero-visual {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-stack {
  position: relative;
  width: min(100%, 340px);
  height: 440px;
  margin-inline: auto;
}

.phone {
  position: absolute;
  width: 220px;
  border-radius: 28px;
  overflow: hidden;
  background: #111;
  box-shadow: var(--shadow-phone);
  border: 2px solid rgba(255, 255, 255, 0.08);
}

.phone img {
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 19.5;
  object-fit: cover;
  object-position: top;
}

.phone.main {
  z-index: 2;
  left: 28px;
  top: 20px;
  animation: floatMain 5.5s ease-in-out infinite;
}

.phone.side {
  z-index: 1;
  right: 0;
  top: 70px;
  transform: rotate(6deg) scale(0.92);
  filter: brightness(0.82) blur(0.2px);
  opacity: 0.92;
  animation: floatSide 6.5s ease-in-out infinite;
}

.phone-glow {
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(254, 44, 85, 0.28), transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 0;
  filter: blur(20px);
  animation: pulseGlow 4s ease-in-out infinite;
}

@keyframes floatMain {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

@keyframes floatSide {
  0%,
  100% {
    transform: rotate(6deg) scale(0.92) translateY(0);
  }
  50% {
    transform: rotate(6deg) scale(0.92) translateY(10px);
  }
}

@keyframes pulseGlow {
  0%,
  100% {
    opacity: 0.7;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.08);
  }
}

/* ========== Sections ========== */
.section {
  padding: 72px 0;
  position: relative;
}

.section.alt {
  background: var(--bg-soft);
}

.section-head {
  max-width: 720px;
  margin-bottom: 36px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: clamp(24px, 3.2vw, 34px);
  line-height: 1.3;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--text-muted);
  font-size: 15px;
}

.prose {
  color: var(--text-muted);
  font-size: 15.5px;
}

.prose p {
  margin-bottom: 1.1em;
}

.prose h3 {
  color: var(--text);
  font-size: 20px;
  margin: 1.6em 0 0.7em;
}

.prose h2 {
  color: var(--text);
  font-size: 24px;
  margin: 1.8em 0 0.8em;
}

.prose strong {
  color: var(--text);
  font-weight: 650;
}

.prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose ul,
.prose ol {
  margin: 0 0 1.2em 1.2em;
  list-style: disc;
}

.prose ol {
  list-style: decimal;
}

.prose li {
  margin-bottom: 0.45em;
}

/* Feature / advantage grids */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature-item {
  padding: 22px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.015));
  border: 1px solid var(--line);
  transition: border-color 0.25s, transform 0.25s, background 0.25s;
}

.feature-item:hover {
  border-color: rgba(0, 242, 234, 0.28);
  transform: translateY(-3px);
  background: var(--bg-card-hover);
}

.feature-item .icon-dot {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  margin-bottom: 14px;
  background: var(--gradient-brand);
  font-size: 14px;
  font-weight: 700;
  color: #07070f;
}

.feature-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.feature-item p {
  font-size: 14px;
  color: var(--text-muted);
}

/* Media blocks */
.media-row {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 36px;
  align-items: center;
  margin: 48px 0;
}

.media-row.reverse {
  grid-template-columns: 1.05fr 0.95fr;
}

.media-row.reverse .media-copy {
  order: 1;
}

.media-row.reverse .media-shot {
  order: 2;
}

.media-shot {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
  background: var(--bg-card);
}

.media-shot img {
  width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: cover;
  object-position: top;
}

.media-shot::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 75%, rgba(7, 7, 15, 0.45));
  pointer-events: none;
}

.media-copy h3 {
  font-size: 22px;
  margin-bottom: 12px;
}

.media-copy p {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 12px;
}

/* Video grid */
.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.video-card {
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--line);
  transition: transform 0.25s, border-color 0.25s;
}

.video-card:hover {
  transform: translateY(-4px);
  border-color: rgba(254, 44, 85, 0.35);
}

.video-card .thumb {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: #111;
}

.video-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.video-card:hover .thumb img {
  transform: scale(1.05);
}

.video-card .meta {
  padding: 12px;
}

.video-card .meta h3 {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card .meta span {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  color: var(--text-dim);
}

/* Download CTA band */
.cta-band {
  position: relative;
  padding: 56px 0;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(254, 44, 85, 0.22), transparent 50%),
    radial-gradient(ellipse at 80% 40%, rgba(0, 242, 234, 0.16), transparent 45%),
    var(--bg-elevated);
  border-block: 1px solid var(--line);
}

.cta-band-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cta-band h2 {
  font-size: clamp(22px, 3vw, 30px);
  margin-bottom: 8px;
}

.cta-band p {
  color: var(--text-muted);
  max-width: 36em;
  font-size: 15px;
}

.cta-apps {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.cta-app {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px 10px 10px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  transition: border-color 0.2s, transform 0.2s;
}

.cta-app:hover {
  border-color: rgba(0, 242, 234, 0.4);
  transform: translateY(-2px);
}

.cta-app img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
}

.cta-app strong {
  display: block;
  font-size: 14px;
}

.cta-app span {
  font-size: 11px;
  color: var(--text-dim);
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 12px;
  max-width: 860px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: 16px 18px;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  color: var(--cyan);
  font-size: 18px;
  line-height: 1;
}

.faq-item[open] summary::after {
  content: "–";
}

.faq-item .faq-body {
  padding: 0 18px 16px;
  color: var(--text-muted);
  font-size: 14.5px;
}

/* Related / recommend */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.related-card {
  padding: 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--bg-card);
  transition: border-color 0.2s, transform 0.2s;
}

.related-card:hover {
  border-color: rgba(123, 92, 255, 0.4);
  transform: translateY(-2px);
}

.related-card h3 {
  font-size: 15px;
  margin-bottom: 6px;
}

.related-card p {
  font-size: 13px;
  color: var(--text-muted);
}

/* Breadcrumb */
.breadcrumb {
  padding: 18px 0 8px;
  font-size: 13px;
  color: var(--text-dim);
}

.breadcrumb a {
  color: var(--text-muted);
}

.breadcrumb a:hover {
  color: var(--cyan);
}

.breadcrumb span {
  margin: 0 6px;
  color: var(--text-dim);
}

/* Page hero small */
.page-hero {
  padding: 28px 0 12px;
}

.page-hero h1 {
  font-size: clamp(26px, 3.5vw, 36px);
  margin-bottom: 10px;
}

.page-hero p {
  color: var(--text-muted);
  max-width: 48em;
}

/* Download page apps */
.app-download-list {
  display: grid;
  gap: 16px;
  margin: 28px 0 48px;
}

.app-download-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
}

.app-download-item.featured {
  border-color: rgba(254, 44, 85, 0.4);
  box-shadow: 0 0 0 1px rgba(254, 44, 85, 0.15), 0 16px 40px rgba(254, 44, 85, 0.12);
}

.app-download-item img {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  object-fit: cover;
}

.app-download-item h2 {
  font-size: 18px;
  margin-bottom: 4px;
}

.app-download-item p {
  font-size: 13px;
  color: var(--text-muted);
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 11px;
  margin-left: 8px;
  vertical-align: middle;
}

.tag-official {
  background: rgba(254, 44, 85, 0.15);
  color: var(--pink);
}

.tag-hot {
  background: rgba(224, 184, 74, 0.15);
  color: var(--gold);
}

.tag-rec {
  background: rgba(0, 242, 234, 0.12);
  color: var(--cyan);
}

/* Footer */
.site-footer {
  padding: 48px 0 28px;
  border-top: 1px solid var(--line);
  background: #05050b;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 36px;
}

.footer-brand img {
  height: 34px;
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 13px;
  color: var(--text-muted);
  max-width: 32em;
}

.footer-col h3 {
  font-size: 14px;
  margin-bottom: 12px;
  color: var(--text);
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  padding: 4px 0;
}

.footer-col a:hover {
  color: var(--cyan);
}

.footer-bottom {
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  font-size: 12px;
  color: var(--text-dim);
}

/* Error pages */
.error-page {
  min-height: calc(100vh - 180px);
  display: grid;
  place-items: center;
  text-align: center;
  padding: 60px 20px;
}

.error-page .code {
  font-size: clamp(64px, 12vw, 120px);
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
  margin-bottom: 12px;
}

.error-page h1 {
  font-size: 24px;
  margin-bottom: 10px;
}

.error-page p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ========== Responsive ========== */
@media (max-width: 960px) {
  .hero-grid,
  .media-row,
  .media-row.reverse {
    grid-template-columns: 1fr;
  }

  .media-row.reverse .media-copy,
  .media-row.reverse .media-shot {
    order: initial;
  }

  .feature-grid,
  .related-grid {
    grid-template-columns: 1fr 1fr;
  }

  .video-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .phone-stack {
    height: 400px;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-h: 56px;
    --adbar-h: 108px;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .download-adbar {
    height: auto;
    min-height: var(--adbar-h);
    padding: 8px 0;
  }

  .download-adbar .adbar-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    justify-content: stretch;
    width: min(100% - 32px, var(--container));
    margin-inline: auto;
    padding: 0;
  }

  .download-adbar .app-chip {
    width: 100%;
    justify-content: flex-start;
    border-radius: 12px;
    min-width: 0;
  }

  .nav-links {
    position: fixed;
    inset: calc(var(--nav-h) + var(--adbar-h)) 0 auto 0;
    background: rgba(10, 10, 18, 0.96);
    backdrop-filter: blur(12px);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px 18px;
    border-bottom: 1px solid var(--line);
    display: none;
    gap: 4px;
    z-index: 998;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 14px;
    border-radius: 10px;
  }

  .nav-cta {
    display: none;
  }

  .hero {
    padding: 28px 0 40px;
  }

  .hero-visual {
    min-height: 360px;
    order: -1;
  }

  .hero-grid {
    gap: 20px;
  }

  .section {
    padding: 48px 0;
  }

  .feature-grid,
  .related-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .app-download-item {
    grid-template-columns: auto 1fr;
  }

  .app-download-item .btn {
    grid-column: 1 / -1;
    width: 100%;
  }

  .adbar-label {
    display: none;
  }

  .phone {
    width: 180px;
  }

  .phone-stack {
    height: 340px;
    width: 280px;
  }

  .phone.main {
    left: 10px;
  }
}

@media (max-width: 420px) {
  .video-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }
}