:root,
[data-theme="dark"] {
  --bg: #07090d;
  --bg-elevated: #0e131a;
  --surface: #121820;
  --surface-2: #171e28;
  --text: #eef3f8;
  --text-2: #b7c2cf;
  --muted: #8090a3;
  --line: rgba(255, 255, 255, 0.08);
  /* 主题色由 /site 接口写入 --accent，此处仅无 JS 时兜底 */
  --accent: #0064ff;
  --accent-2: #0050cc;
  --accent-ink: #ffffff;
  --danger: #f87171;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  --nav-bg: rgba(7, 9, 13, 0.86);
  --banner-a: #0a1018;
  --banner-b: #101820;
  --card-hover: rgba(0, 100, 255, 0.14);
  color-scheme: dark;
}

[data-theme="light"] {
  --bg: #f7f8fa;
  --bg-elevated: #ffffff;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --text: #111827;
  --text-2: #374151;
  --muted: #6b7280;
  --line: rgba(17, 24, 39, 0.08);
  --accent: #0064ff;
  --accent-2: #0052d9;
  --accent-ink: #ffffff;
  --danger: #dc2626;
  --shadow: 0 18px 40px rgba(18, 23, 30, 0.08);
  --nav-bg: rgba(247, 248, 250, 0.92);
  --banner-a: #eef2f6;
  --banner-b: #e8eef2;
  --card-hover: transparent;
  color-scheme: light;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  font-size: 14px;
  font-weight: 400;
  text-rendering: auto;
  -webkit-font-smoothing: auto;
  -moz-osx-font-smoothing: auto;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea, select { font: inherit; }

/* 官网内容区固定 max 1280，后续改版勿动此宽度 */
.wrap {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 28px;
  padding-right: 28px;
  box-sizing: border-box;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: var(--nav-bg);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.logo {
  font-weight: 800;
  letter-spacing: 0.02em;
  font-size: 1.2rem;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.logo span { color: var(--accent); }
.logo-img {
  height: 32px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
}
.logo-text {
  display: none !important;
}
.nav-menu-btn { display: none !important; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px 18px;
  color: var(--muted);
  font-size: 0.94rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav-links a:hover,
.nav-links a.active { color: var(--text); }
.nav-links a.active { color: var(--accent); }
.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  display: grid;
  place-items: center;
}
.icon-btn:hover {
  background: color-mix(in srgb, var(--text) 6%, transparent);
}
.icon-btn svg {
  display: block;
}

.announce-bar {
  border: none;
  background: transparent;
}
.announce-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 42px;
  padding-top: 8px;
  padding-bottom: 8px;
}
.announce-label {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 2px 10px;
  border-radius: 3px;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: #fff;
  background: var(--accent);
  line-height: 1.4;
}
.announce-viewport {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 18px, #000 calc(100% - 18px), transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 18px, #000 calc(100% - 18px), transparent);
}
.announce-track {
  display: flex;
  width: max-content;
  animation: announce-marquee linear infinite;
  will-change: transform;
}
.announce-bar:hover .announce-track {
  animation-play-state: paused;
}
.announce-group {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 0;
  padding-right: 48px;
  white-space: nowrap;
}
.announce-item {
  color: var(--text-2);
  font-size: 13px;
  font-weight: 400;
  line-height: 1.5;
  text-decoration: none;
}
a.announce-item:hover {
  color: var(--accent);
}
.announce-sep {
  margin: 0 18px;
  color: var(--muted);
  opacity: 0.7;
}
@keyframes announce-marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.banner {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 70% 80% at 85% 40%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 55%),
    linear-gradient(135deg, var(--banner-a), var(--banner-b) 55%, var(--bg));
}
.banner-track {
  display: flex;
  transition: transform 0.55s cubic-bezier(.22, 1, .36, 1);
}
.banner-slide {
  min-width: 100%;
  min-height: clamp(380px, 42vw, 520px);
  padding: 64px 0 72px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.banner-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 36px 40px;
  align-items: center;
  /* 勿写 width:100%，会盖掉 .wrap 的 1280 上限 */
}
.banner-copy .eyebrow {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  margin-bottom: 18px;
}
.banner-copy h1 {
  font-size: clamp(2.2rem, 4.6vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  font-weight: 800;
  max-width: 10em;
  margin-bottom: 16px;
}
.banner-copy p {
  color: var(--text-2);
  max-width: 28em;
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 28px;
}
.banner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.banner-visual {
  position: relative;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.banner-visual::before {
  content: "";
  position: absolute;
  width: 72%;
  height: 72%;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 22%, transparent), transparent 68%);
  filter: blur(6px);
  z-index: 0;
  pointer-events: none;
}
.banner-visual.has-photo {
  min-height: 0;
}
.banner-visual.has-photo::before { opacity: 0.45; }
.banner-visual.has-photo img {
  position: relative;
  z-index: 1;
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  object-fit: cover;
  aspect-ratio: 16 / 11;
  background: var(--surface);
}
.hero-window {
  position: relative;
  z-index: 1;
  width: min(100%, 460px);
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
  transform: perspective(1200px) rotateY(-6deg) rotateX(3deg);
  animation: hero-float 7s ease-in-out infinite;
}
@keyframes hero-float {
  0%, 100% { transform: perspective(1200px) rotateY(-6deg) rotateX(3deg) translateY(0); }
  50% { transform: perspective(1200px) rotateY(-6deg) rotateX(3deg) translateY(-8px); }
}
.hero-window-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 12px 14px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
}
.hero-window-bar span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--muted) 55%, transparent);
}
.hero-window-bar span:nth-child(1) { background: #ff5f57; }
.hero-window-bar span:nth-child(2) { background: #febc2e; }
.hero-window-bar span:nth-child(3) { background: #28c840; }
.hero-window-body {
  display: grid;
  grid-template-columns: 72px 1fr;
  min-height: 240px;
}
.hero-side {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 14px;
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 55%, var(--surface));
}
.hero-side i {
  display: block;
  height: 10px;
  border-radius: 6px;
  background: var(--surface-2);
}
.hero-side i.on {
  background: color-mix(in srgb, var(--accent) 55%, var(--surface-2));
}
.hero-main {
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.hero-line {
  height: 11px;
  border-radius: 6px;
  background: var(--surface-2);
}
.hero-line.long { width: 72%; }
.hero-line.mid { width: 48%; }
.hero-line.short { width: 34%; margin-top: 8px; }
.hero-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 8px 0 4px;
}
.hero-cards b {
  display: block;
  aspect-ratio: 1.15;
  border-radius: 10px;
  border: 1px solid var(--line);
  background:
    linear-gradient(160deg, color-mix(in srgb, var(--accent) 16%, var(--surface-2)), var(--surface-2));
}
.banner-dots {
  position: absolute;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}
.banner-dots button {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  border: none;
  background: var(--muted);
  opacity: 0.45;
  cursor: pointer;
}
.banner-dots button.on {
  opacity: 1;
  background: var(--accent);
  width: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.98rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); opacity: 0.96; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-ghost {
  background: transparent;
  border-color: color-mix(in srgb, var(--text) 18%, var(--line));
  color: var(--text);
}
.btn-ghost:hover {
  border-color: color-mix(in srgb, var(--text) 35%, var(--line));
  background: color-mix(in srgb, var(--text) 4%, transparent);
}

.section { padding: 72px 0; }
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.section-head p { color: var(--muted); }

/* 软件区 · 方案 A 克制商业 */
.apps-section {
  padding: 112px 0 140px;
  background: var(--bg);
}
.apps-head { margin-bottom: 16px; }
.apps-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}
.apps-section .section-head h2 {
  font-size: clamp(2rem, 3.6vw, 2.65rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
}
.apps-section .section-head p {
  font-size: 1.05rem;
  max-width: 32em;
  color: var(--muted);
  font-weight: 400;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 36px;
  margin: 36px 0 44px;
  padding-bottom: 0;
  border-bottom: none;
}
.chip {
  border: none;
  background: transparent;
  color: var(--muted);
  padding: 8px 0 10px;
  border-radius: 0;
  cursor: pointer;
  font-size: 0.98rem;
  font-weight: 400;
  position: relative;
  letter-spacing: 0.01em;
}
.chip:hover { color: var(--text); }
.chip.on {
  color: var(--text);
  background: transparent;
  font-weight: 600;
}
.chip.on::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
}

.apps-air {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
  align-items: stretch;
}
.apps-mag-loading {
  grid-column: 1 / -1;
  color: var(--muted);
  padding: 56px 0;
  font-size: 1.05rem;
}

.air-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 300px;
  padding: 36px 32px 28px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--surface-2) 0%, var(--surface) 42%);
  text-decoration: none;
  color: inherit;
  box-shadow: none;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.air-card:hover {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.28);
}
.air-card-head {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 18px;
  margin-bottom: 24px;
  flex-shrink: 0;
}
.air-card-titles {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  min-width: 0;
  flex: 1;
}
.air-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.air-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.3;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
}
.air-badge.free {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
}
.air-badge.price {
  color: var(--text-2);
  background: color-mix(in srgb, var(--text) 8%, transparent);
}
.air-badge.soon {
  color: #d97706;
  background: rgba(217, 119, 6, 0.14);
}
.air-badge.promo {
  color: #e11d48;
  background: rgba(225, 29, 72, 0.12);
}
[data-theme="light"] .air-badge.soon {
  color: #b45309;
  background: rgba(180, 83, 9, 0.12);
}
[data-theme="light"] .air-badge.promo {
  color: #be123c;
  background: rgba(190, 18, 60, 0.1);
}
.air-cover {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 16%, var(--bg));
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  overflow: hidden;
  flex-shrink: 0;
}
.air-cover.has-icon {
  background: #0b1118;
  padding: 0;
}
.air-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.air-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.35;
  margin: 0;
  text-align: left;
  min-width: 0;
  color: var(--text);
}
.air-card .tagline {
  color: var(--text-2);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.7;
  min-height: calc(1.7em * 2);
  max-width: none;
  margin: 0;
  padding: 0;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  word-break: break-word;
  overflow-wrap: anywhere;
  flex: 1 1 auto;
}
.air-card-foot {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-top: auto;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  flex-shrink: 0;
}
.air-card-foot .go {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(180deg, var(--surface-2) 0%, var(--surface) 100%);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.35;
  box-shadow: none;
  transition: border-color 0.18s ease, color 0.18s ease, background 0.18s ease, transform 0.15s ease;
}
.air-card:hover .go {
  color: var(--accent-ink);
  background: var(--accent);
  border-color: transparent;
  transform: translateY(-1px);
}

/* 旧布局兜底隐藏 */
.app-grid, .app-card, .apps-mag, .mag-feature, .mag-list { display: none !important; }

.promo-section {
  padding: 40px 0 12px;
}
.promo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.promo-card {
  display: block;
  padding: 28px 26px 26px;
  border-radius: 16px;
  border: 1px solid transparent;
  background: var(--surface);
  text-decoration: none;
  color: inherit;
  transition: background-color 0.18s ease, transform 0.18s ease;
  box-shadow: none;
  min-height: 132px;
}
a.promo-card:hover {
  background: var(--surface-2);
  transform: translateY(-2px);
}
.promo-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
  color: var(--text);
}
.promo-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-elevated);
  padding: 56px 0 28px;
  margin-top: 48px;
}
.footer-main {
  display: grid;
  grid-template-columns: minmax(220px, 1.1fr) minmax(0, 2.2fr);
  gap: 40px 56px;
  align-items: start;
  margin-bottom: 36px;
}
.footer-brand .logo {
  display: inline-flex;
  margin-bottom: 14px;
  font-size: 1.15rem;
}
.footer-brand .logo-img {
  height: 30px;
  max-width: 140px;
}
.footer-tagline {
  color: var(--text-2);
  font-size: 0.95rem;
  max-width: 22em;
  line-height: 1.7;
  margin: 0 0 10px;
}
.footer-domain {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}
.footer-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 28px 32px;
}
.footer-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  min-width: 0;
}
.footer-col h4 {
  margin: 0 0 4px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
}
.footer-col a,
.footer-col span {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
  text-decoration: none;
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 18px;
  color: var(--muted);
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  flex-wrap: wrap;
}
.footer-bottom-meta {
  opacity: 0.85;
}
/* 兼容旧结构 */
.footer-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px 40px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  align-items: center;
  justify-content: flex-end;
}
.footer-links a {
  color: var(--muted);
  font-size: 0.9rem;
}
.footer-links a:hover { color: var(--text); }

/* product detail */
.page-hero {
  padding: 56px 0 36px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--bg-elevated), var(--bg));
}
.page-hero.product-hero {
  padding: 56px 0 64px;
  background:
    radial-gradient(ellipse 70% 80% at 85% 40%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 55%),
    linear-gradient(135deg, var(--banner-a), var(--banner-b) 55%, var(--bg));
}
.product-hero-grid {
  align-items: center;
}
.product-hero-copy .crumb {
  margin-bottom: 16px;
}
.product-hero-copy .air-badges {
  margin-bottom: 16px;
}
.product-hero-copy h1 {
  margin-bottom: 14px;
}
.product-hero-copy .lead {
  margin-bottom: 0;
  max-width: 32em;
}
.product-hero-copy .product-desc {
  margin-top: 12px;
  font-size: 0.98rem;
  color: var(--muted);
}
.product-hero .banner-actions {
  margin-top: 28px;
}
.page-hero .crumb { color: var(--muted); font-size: 0.88rem; margin-bottom: 14px; }
.page-hero .crumb a { color: var(--muted); text-decoration: none; }
.page-hero .crumb a:hover { color: var(--accent); }
.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}
.page-hero .lead { color: var(--text-2); font-size: 1.08rem; max-width: 40em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.feature-visual.has-photo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: var(--surface);
}
.feature-visual.has-photo img {
  width: 100%;
  height: 100%;
  max-height: 320px;
  object-fit: contain;
  border-radius: 12px;
}

.contact-section { padding: 48px 0 80px; }
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(240px, 0.7fr);
  gap: 28px;
  align-items: start;
}
.contact-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 28px 28px 24px;
}
.contact-card h2 {
  font-size: 15px;
  font-weight: 400;
  margin: 0 0 20px;
  color: var(--text);
}
.contact-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.contact-row:last-of-type { border-bottom: none; }
.contact-k {
  color: var(--muted);
  font-size: 13px;
}
.contact-v {
  color: var(--text);
  font-size: 14px;
  word-break: break-word;
}
.contact-v a {
  color: var(--accent);
  text-decoration: none;
}
.contact-v a:hover { text-decoration: underline; }
.contact-note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--text-2);
  font-size: 13px;
  line-height: 1.7;
}
.contact-empty { color: var(--muted); font-size: 14px; margin: 0; }
.contact-qr {
  text-align: center;
}
.contact-qr img {
  width: min(200px, 100%);
  margin: 8px auto 14px;
  border-radius: 3px;
  border: 1px solid var(--line);
  background: #fff;
}
.contact-qr p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
@media (max-width: 860px) {
  .contact-layout { grid-template-columns: 1fr; }
}

.feature-list { display: flex; flex-direction: column; gap: 0; }
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 40px;
  align-items: center;
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}
.feature-block:nth-child(even) .feature-copy { order: 2; }
.feature-index {
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  font-size: 0.85rem;
}
.feature-block h2 { font-size: 1.7rem; font-weight: 800; margin-bottom: 8px; }
.feature-block .sub { color: var(--muted); margin-bottom: 12px; }
.feature-block p { color: var(--text-2); }
.feature-visual {
  min-height: 240px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 30% 20%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 45%),
    var(--surface);
  position: relative;
  overflow: hidden;
}
.demo-panel {
  position: absolute;
  inset: 18% 12% auto;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
  background: var(--bg-elevated);
  padding: 14px;
  box-shadow: var(--shadow);
}
.demo-row {
  height: 12px;
  border-radius: 6px;
  background: var(--surface-2);
  margin-bottom: 8px;
}
.demo-row.on {
  background: color-mix(in srgb, var(--accent) 28%, var(--surface-2));
  width: 78%;
}
.demo-row.short { width: 55%; }

.shot-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.shot-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  background: var(--surface);
}
.shot-frame {
  aspect-ratio: 16 / 10;
  background: var(--surface-2);
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.9rem;
}
.shot-card img { width: 100%; height: 100%; object-fit: cover; }
.shot-body { padding: 14px 16px 16px; }
.shot-body h3 { font-size: 1rem; margin-bottom: 4px; }
.shot-body p { color: var(--muted); font-size: 0.88rem; }

.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.price-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
  background: var(--surface);
}
.price-card.hot {
  border-color: color-mix(in srgb, var(--accent) 50%, transparent);
  background: linear-gradient(165deg, var(--card-hover), var(--surface) 50%);
}
.price-card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.price-card .amount {
  font-size: 2rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  font-family: inherit;
}
.price-card .unit { color: var(--muted); font-size: 0.88rem; margin-left: 6px; }
.price-card p { color: var(--muted); font-size: 0.9rem; margin: 10px 0 16px; }

.buy-box, .panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  padding: 24px;
}

/* 购买页 · 1280 商务商务布局 */
.buy-hero {
  padding: 56px 0 28px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(105deg, color-mix(in srgb, var(--accent) 8%, var(--bg)) 0%, var(--bg) 48%, var(--bg) 100%);
}
.buy-hero-copy { max-width: 44em; }
.buy-kicker {
  margin: 10px 0 12px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--accent);
}
.buy-hero h1 {
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  margin: 0 0 14px;
  line-height: 1.15;
}
.buy-hero .lead {
  max-width: 40em;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
  margin: 0;
}
.buy-section {
  padding-top: 28px;
  padding-bottom: 96px;
}
.buy-steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 0 0 28px;
  padding: 0;
}
.buy-step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.buy-step span {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  font-size: 0.82rem;
  font-weight: 700;
  border: 1px solid var(--line);
  background: var(--bg-elevated);
}
.buy-step em {
  font-style: normal;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.buy-step.on {
  color: var(--text);
  border-color: color-mix(in srgb, var(--accent) 42%, var(--line));
  background: color-mix(in srgb, var(--accent) 9%, var(--surface));
  box-shadow: 0 12px 32px color-mix(in srgb, var(--accent) 12%, transparent);
}
.buy-step.on span {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: transparent;
}
.buy-panel {
  padding: 40px 44px 36px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.buy-notice {
  margin-top: 22px;
  padding: 22px 26px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--text) 3%, var(--surface));
}
.buy-notice.hidden { display: none; }
.buy-notice-title {
  margin: 0 0 12px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}
.buy-notice-body {
  color: var(--text-2);
  font-size: 0.9rem;
  line-height: 1.7;
}
.buy-notice-body ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}
.buy-notice-body li {
  position: relative;
  padding-left: 14px;
}
.buy-notice-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 70%, var(--muted));
}
.buy-pane-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 10px 24px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}
.buy-pane h2 {
  font-size: clamp(1.45rem, 2.4vw, 1.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 8px;
}
.buy-sub {
  color: var(--muted);
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.65;
  max-width: 40em;
}
.buy-form-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  max-width: 760px;
}
.buy-form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  max-width: 720px;
}
.buy-pane .field { margin-bottom: 0; }
.buy-form-stack .field label,
.buy-form-grid .field label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 8px;
}
.buy-form-stack .field select,
.buy-form-stack .field input,
.buy-form-grid .field select,
.buy-form-grid .field input {
  min-height: 52px;
  font-size: 1rem;
  border-radius: 12px;
}
.buy-form-stack .buy-hint {
  margin-top: 8px;
}
.buy-hint {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 16px 0 0;
}
.buy-plan-field {
  max-width: none;
}
.buy-coupon-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}
.buy-coupon-row input { flex: 1; }
.buy-coupon-row .btn {
  flex: 0 0 auto;
  white-space: nowrap;
  min-height: 48px;
}
.buy-coupon-tip {
  margin: 8px 0 0;
  font-size: 0.86rem;
  color: var(--muted);
  min-height: 1.2em;
}
.buy-coupon-tip.is-ok { color: #059669; }
.buy-coupon-tip.is-err { color: #dc2626; }
.ticket-hero .buy-hero-copy { max-width: 48em; }
.ticket-section {
  padding-top: 28px;
  padding-bottom: 96px;
}
.ticket-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(260px, 0.85fr);
  gap: 22px;
  align-items: start;
}
.ticket-panel {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 40px 44px 36px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.ticket-form .field { margin-bottom: 18px; }
.ticket-form .req {
  color: var(--accent);
  font-weight: 700;
}
.ticket-email-hint {
  margin: 8px 0 0;
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--muted);
}
.ticket-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 18px;
}
.ticket-form input,
.ticket-form select,
.ticket-form textarea {
  color: var(--text);
  -webkit-text-fill-color: var(--text);
}
.ticket-form input::placeholder,
.ticket-form textarea::placeholder {
  color: color-mix(in srgb, var(--muted) 82%, transparent);
  -webkit-text-fill-color: color-mix(in srgb, var(--muted) 82%, transparent);
  opacity: 1;
}
.ticket-form select.is-placeholder {
  color: color-mix(in srgb, var(--muted) 82%, transparent);
  -webkit-text-fill-color: color-mix(in srgb, var(--muted) 82%, transparent);
}
.ticket-form select:not(.is-placeholder) {
  color: var(--text);
  -webkit-text-fill-color: var(--text);
}
.ticket-form select option {
  color: var(--text);
  background: var(--surface);
}
.ticket-form textarea {
  width: 100%;
  min-height: 180px;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  resize: vertical;
  font: inherit;
  line-height: 1.65;
}
.ticket-aside {
  display: grid;
  gap: 14px;
}
.ticket-aside-card {
  padding: 22px 22px 20px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}
.ticket-aside-card h3 {
  margin: 0 0 12px;
  font-size: 1rem;
  font-weight: 750;
  letter-spacing: -0.02em;
}
.ticket-notice-body p,
.ticket-notice-body li {
  margin: 0;
  color: var(--text-2);
  font-size: 0.92rem;
  line-height: 1.7;
}
.ticket-notice-body ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}
.ticket-notice-body li {
  position: relative;
  padding-left: 14px;
}
.ticket-notice-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 70%, var(--muted));
}
.ticket-aside-links {
  display: grid;
  gap: 10px;
}
.ticket-aside-links a {
  display: block;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
  transition: border-color 0.18s ease, background 0.18s ease;
}
.ticket-aside-links a:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  background: color-mix(in srgb, var(--accent) 8%, var(--surface));
  color: var(--accent);
}
@media (max-width: 960px) {
  .ticket-layout { grid-template-columns: 1fr; }
  .ticket-panel { padding: 28px 22px 24px; }
}
@media (max-width: 720px) {
  .ticket-form-grid { grid-template-columns: 1fr; }
  .ticket-panel { padding: 22px 18px; }
}
.buy-sale-banner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 18px;
  margin: 0 0 14px;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, #e11d48 28%, var(--line));
  background:
    linear-gradient(135deg, color-mix(in srgb, #e11d48 12%, var(--surface)), color-mix(in srgb, var(--accent) 8%, var(--surface)));
}
.buy-sale-banner.hidden { display: none; }
.buy-sale-banner-main {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
}
.buy-sale-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #fff;
  background: linear-gradient(135deg, #e11d48, #f97316);
}
.buy-sale-tip {
  font-size: 0.86rem;
  color: var(--text-2);
}
.buy-sale-countdown {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 8px;
  font-size: 0.82rem;
  color: var(--text-2);
}
.buy-sale-cd-label {
  color: var(--muted);
  margin-right: 2px;
}
.buy-sale-cd-unit strong {
  display: inline-block;
  min-width: 1.6em;
  padding: 2px 5px;
  margin-right: 2px;
  border-radius: 6px;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: #fff;
  background: color-mix(in srgb, #e11d48 88%, #000);
}
.buy-plan-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 720px;
}
.buy-plan-empty {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}
.buy-plan-card {
  position: relative;
  box-sizing: border-box;
  width: 150px;
  min-height: 60px;
  height: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 8px 10px;
  margin: 0;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  text-align: center;
  transition: border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
  font: inherit;
  flex: 0 0 150px;
}
.buy-plan-card.has-deal {
  width: 168px;
  flex-basis: 168px;
  padding: 10px 12px;
  gap: 3px;
}
.buy-plan-card:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}
.buy-plan-card.is-on {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, var(--surface));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent);
}
.buy-plan-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.2;
}
.buy-plan-price {
  font-size: 0.78rem;
  font-weight: 650;
  color: var(--muted);
  line-height: 1.2;
}
.buy-plan-card.is-on .buy-plan-price {
  color: var(--accent);
}
.buy-plan-orig {
  font-size: 0.72rem;
  color: var(--muted);
  text-decoration: line-through;
  line-height: 1.2;
  opacity: 0.85;
}
.buy-plan-sale {
  font-size: 0.78rem;
  font-weight: 700;
  color: #e11d48;
  line-height: 1.25;
}
.buy-plan-sale em {
  font-style: normal;
  font-weight: 600;
  font-size: 0.7rem;
  opacity: 0.9;
}
.buy-plan-card.is-on .buy-plan-sale {
  color: var(--accent);
}
.buy-plan-check {
  position: absolute;
  top: -7px;
  right: -7px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-ink);
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: 0 1px 4px color-mix(in srgb, var(--accent) 30%, transparent);
}
.buy-plan-card.is-on .buy-plan-check {
  display: flex;
}
.buy-plan-check::before {
  content: "";
  width: 8px;
  height: 4px;
  border-left: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(-45deg) translate(0.5px, -0.5px);
}
.buy-alert {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: baseline;
  padding: 14px 16px;
  margin-bottom: 20px;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, #f59e0b 35%, var(--line));
  background: color-mix(in srgb, #f59e0b 10%, var(--surface));
  color: var(--text-2);
  font-size: 0.92rem;
  line-height: 1.55;
}
.buy-alert strong {
  color: #d97706;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}
[data-theme="dark"] .buy-alert strong { color: #fbbf24; }
.buy-pay-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.95fr);
  gap: 28px 36px;
  align-items: start;
}
.buy-pay-main .buy-actions { margin-top: 8px; }
.buy-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.buy-actions-inline {
  border-top: 0;
  padding-top: 0;
}
.buy-btn-main { min-width: 148px; }
.buy-order-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--accent) 7%, var(--bg-elevated)), var(--bg-elevated));
  padding: 22px 22px 18px;
  margin-bottom: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.buy-order-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 12px;
}
.buy-order-row .k {
  color: var(--muted);
  font-size: 0.9rem;
  min-width: 4.5em;
}
.buy-order-row strong {
  font-size: 1.12rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}
.buy-order-price strong {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.03em;
}
.buy-copy {
  padding: 7px 14px !important;
  font-size: 0.88rem !important;
  margin-left: auto;
  border-radius: 10px !important;
}
.buy-plan {
  color: var(--muted);
  font-size: 0.92rem;
  padding: 5px 12px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--text) 5%, transparent);
}
.buy-code { color: var(--accent); word-break: break-all; }
.buy-done-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: end;
}
.qr-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.qr-item {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 18px 16px 16px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.qr-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px color-mix(in srgb, var(--text) 8%, transparent);
}
.qr-alipay {
  border-color: color-mix(in srgb, #1677ff 35%, var(--line));
  background: color-mix(in srgb, #1677ff 6%, var(--bg-elevated));
}
.qr-wechat {
  border-color: color-mix(in srgb, #07c160 35%, var(--line));
  background: color-mix(in srgb, #07c160 6%, var(--bg-elevated));
}
.qr-label {
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.qr-alipay .qr-label { color: #1677ff; }
.qr-wechat .qr-label { color: #07c160; }
.qr-tip {
  margin: 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.84rem;
}
.buy-pane .field select {
  color: var(--text) !important;
  -webkit-text-fill-color: var(--text);
  background-color: var(--bg-elevated) !important;
  color-scheme: inherit;
}
.buy-pane .field select option,
.buy-pane .field select optgroup {
  color: var(--text);
  background-color: var(--surface);
}
@media (max-width: 960px) {
  .buy-pay-layout,
  .buy-done-layout {
    grid-template-columns: 1fr;
  }
  .buy-form-stack,
  .buy-form-grid { max-width: none; }
  .buy-panel { padding: 28px 22px 24px; }
  .buy-notice { padding: 18px 18px; }
}
@media (max-width: 720px) {
  .buy-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .buy-step { padding: 12px 14px; }
  .buy-actions { flex-direction: column; }
  .buy-actions .btn { width: 100%; justify-content: center; }
  .qr-grid { grid-template-columns: 1fr; }
}
.field { margin-bottom: 14px; }
.field label { display: block; color: var(--muted); font-size: 0.85rem; margin-bottom: 6px; }
.field input, .field textarea, .field select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  background-color: var(--bg-elevated);
  color: var(--text);
  -webkit-text-fill-color: var(--text);
  outline: none;
  min-height: 48px;
  line-height: 1.4;
  appearance: auto;
  color-scheme: inherit;
}
.field select option,
.field select optgroup {
  color: var(--text);
  background-color: var(--surface);
}
.err { color: var(--danger); font-size: 0.9rem; margin-top: 8px; }
.qr {
  aspect-ratio: 1;
  border-radius: 14px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  background: #fff;
  display: grid;
  place-items: center;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
}
.qr img { width: 100%; height: 100%; object-fit: contain; padding: 10px; }
.qr span { color: #64748b; font-size: 0.85rem; text-align: center; padding: 10px; }
.hidden { display: none !important; }

@media (min-width: 1280px) {
  .apps-air { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
}
@media (max-width: 1100px) {
  .banner-grid { gap: 36px; }
  .apps-air { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
}
@media (max-width: 960px) {
  .footer-main { grid-template-columns: 1fr; gap: 32px; }
  .footer-top { flex-direction: column; }
  .footer-links { justify-content: flex-start; }
  .site-footer { padding: 40px 0 24px; margin-top: 32px; }
  .promo-grid { grid-template-columns: 1fr; }
  .banner-grid { grid-template-columns: 1fr; gap: 40px; }
  .banner-slide {
    min-height: auto;
    padding: 64px 0 72px;
  }
  .banner-copy h1 { max-width: none; }
  .banner-visual { order: -1; min-height: 240px; }
  .hero-window {
    width: min(100%, 420px);
    transform: none;
    animation: none;
  }
  .feature-block,
  .feature-block:nth-child(even) {
    grid-template-columns: 1fr;
  }
  .feature-block:nth-child(even) .feature-copy { order: unset; }
  .price-grid { grid-template-columns: 1fr; }
  .shot-grid { grid-template-columns: 1fr; }
  .apps-air { grid-template-columns: 1fr; gap: 16px; }
  .air-card { min-height: 0; padding: 26px 22px 22px; border-radius: 16px; }
  .air-cover { width: 48px; height: 48px; border-radius: 12px; }
  .air-card-head { gap: 14px; margin-bottom: 16px; }
  .air-card h3 { font-size: 1.05rem; }
  .air-card .tagline { font-size: 0.92rem; min-height: 0; }
  .air-card-foot { padding-top: 18px; }
}
@media (max-width: 640px) {
  .qr-grid { grid-template-columns: 1fr; }
  .nav-menu-btn { display: grid !important; }
  .nav-links {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 70px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 12px;
    background: var(--nav-bg);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
  }
  body.nav-open .nav-links {
    display: flex;
  }
  .nav-links a {
    padding: 12px 28px;
    color: var(--text);
  }
  .nav-links .theme-only {
    margin: 6px 28px 0;
    width: 40px;
  }
  .nav { position: sticky; }
  .banner-slide { padding: 40px 0 52px; min-height: 300px; }
  .banner-copy h1 { font-size: clamp(1.9rem, 8vw, 2.4rem); }
  .banner-copy p { font-size: 0.98rem; margin-bottom: 24px; }
  .hero-window-body { min-height: 200px; }
  .filters { gap: 6px 18px; margin-bottom: 28px; }
  .apps-section { padding: 56px 0 72px; }
  .promo-section { padding: 20px 0 4px; }
}