/* ==========================================================================
   上海尚霁科技有限公司 官网样式
   深色科技风：深底 + 青紫渐变光效
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计令牌
   -------------------------------------------------------------------------- */
:root {
  /* 背景层次：从最深到最浅 */
  --bg-base: #070b14;
  --bg-surface: #0d1322;
  --bg-elevated: #131a2c;
  --bg-glass: rgba(19, 26, 44, 0.72);

  /* 文本三级灰阶 */
  --text-primary: #f1f5f9;
  --text-secondary: #b6c2d4;
  --text-muted: #7e8ba3;

  /* 品牌色 */
  --accent-cyan: #22d3ee;
  --accent-purple: #8b5cf6;
  --accent-blue: #3b82f6;
  --gradient-brand: linear-gradient(120deg, #22d3ee 0%, #3b82f6 48%, #8b5cf6 100%);
  --gradient-soft: linear-gradient(135deg, rgba(34, 211, 238, 0.14), rgba(139, 92, 246, 0.14));

  /* 描边 */
  --border-subtle: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(148, 163, 184, 0.26);

  /* 状态色 */
  --warn: #fbbf24;
  --danger: #f87171;

  /* 尺寸 */
  --max-width: 1180px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --header-height: 68px;

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro SC', 'PingFang SC',
    'Helvetica Neue', 'Microsoft YaHei', 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', ui-monospace, 'JetBrains Mono', Menlo, Consolas, monospace;

  /* 动效 */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* --------------------------------------------------------------------------
   2. 基础重置
   -------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

/* hidden 属性的 display:none 来自 UA 样式表，优先级极低，
   会被 .footer__contact li { display: flex } 这类选择器覆盖掉。
   全站靠 hidden 控制显隐（电话、ICP 备案号、法律文本语言块），这里兜住。 */
[hidden] { display: none !important; }

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-secondary);
  background: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;   /* 防止装饰光斑撑出横向滚动条 */
}

/* 页面底色上的两团柔光，铺满整页 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(900px 500px at 12% -8%, rgba(34, 211, 238, 0.10), transparent 60%),
    radial-gradient(800px 500px at 88% 8%, rgba(139, 92, 246, 0.12), transparent 60%);
}

h1, h2, h3, h4 {
  margin: 0 0 0.6em;
  color: var(--text-primary);
  line-height: 1.25;
  font-weight: 650;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.1rem, 5.2vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.32rem); }

p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
a:hover { color: #67e8f9; }

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

ul { margin: 0; padding: 0; list-style: none; }

:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 跳转到主内容（无障碍） */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: 10px 18px;
  background: var(--accent-cyan);
  color: #04121a;
  font-weight: 600;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* --------------------------------------------------------------------------
   3. 布局工具
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: clamp(64px, 9vw, 112px) 0;
  position: relative;
}

.section--tight { padding: clamp(48px, 6vw, 72px) 0; }

.section--alt {
  background: linear-gradient(180deg, transparent, rgba(13, 19, 34, 0.6) 18%, rgba(13, 19, 34, 0.6) 82%, transparent);
}

.section-head {
  max-width: 720px;
  margin-bottom: clamp(36px, 5vw, 56px);
}
.section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 0.78rem;
  font-weight: 620;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--accent-cyan);
}

.lead {
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  color: var(--text-secondary);
}

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

/* --------------------------------------------------------------------------
   4. 顶栏导航
   -------------------------------------------------------------------------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease);
}
.header.is-scrolled {
  background: rgba(7, 11, 20, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--border-subtle);
}

.header__inner {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 660;
  font-size: 1.02rem;
  color: var(--text-primary);
  white-space: nowrap;
}
.logo:hover { color: var(--text-primary); }
.logo__mark { width: 28px; height: 28px; flex-shrink: 0; }

.nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.94rem;
  color: var(--text-secondary);
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.nav a:hover { color: var(--text-primary); background: rgba(148, 163, 184, 0.08); }
.nav a.is-current {
  color: var(--text-primary);
  background: rgba(34, 211, 238, 0.10);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-toggle {
  padding: 7px 14px;
  min-width: 62px;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s var(--ease);
}
.lang-toggle:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
  background: rgba(34, 211, 238, 0.10);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  position: relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 50%;
  width: 17px;
  height: 1.6px;
  margin-left: -8.5px;
  background: var(--text-primary);
  transition: transform 0.24s var(--ease), opacity 0.24s var(--ease);
}
.nav-toggle span { top: 50%; margin-top: -0.8px; }
.nav-toggle span::before { margin-left: 0; left: 0; top: -6px; }
.nav-toggle span::after { margin-left: 0; left: 0; top: 6px; }

.nav-toggle[aria-expanded='true'] span { background: transparent; }
.nav-toggle[aria-expanded='true'] span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded='true'] span::after { transform: translateY(-6px) rotate(-45deg); }

/* --------------------------------------------------------------------------
   5. 按钮
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  font-family: inherit;
  font-size: 0.97rem;
  font-weight: 600;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease),
              background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.btn--primary {
  color: #04121a;
  background: var(--gradient-brand);
  box-shadow: 0 6px 24px rgba(34, 211, 238, 0.22);
}
.btn--primary:hover {
  color: #04121a;
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(34, 211, 238, 0.32);
}

.btn--ghost {
  color: var(--text-primary);
  border-color: var(--border-strong);
  background: rgba(148, 163, 184, 0.05);
}
.btn--ghost:hover {
  color: var(--text-primary);
  border-color: var(--accent-cyan);
  background: rgba(34, 211, 238, 0.10);
  transform: translateY(-2px);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.btn-row--center { justify-content: center; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}
.link-arrow::after {
  content: '→';
  transition: transform 0.2s var(--ease);
}
.link-arrow:hover::after { transform: translateX(4px); }

/* --------------------------------------------------------------------------
   6. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  padding: clamp(72px, 11vw, 132px) 0 clamp(56px, 8vw, 96px);
  overflow: hidden;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.85;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 820px;
}
.hero__inner--center { margin: 0 auto; text-align: center; }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 26px;
  padding: 7px 16px;
  font-size: 0.83rem;
  font-weight: 550;
  color: var(--text-secondary);
  background: var(--gradient-soft);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
}
.hero__badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
}

.hero__title { margin-bottom: 22px; }

.hero__subtitle {
  font-size: clamp(1.02rem, 2vw, 1.18rem);
  color: var(--text-secondary);
  max-width: 660px;
  margin-bottom: 36px;
}
.hero__inner--center .hero__subtitle { margin-left: auto; margin-right: auto; }

/* 内页 Hero：比首页矮一截 */
.page-hero {
  padding: clamp(56px, 8vw, 92px) 0 clamp(32px, 4vw, 48px);
}

/* --------------------------------------------------------------------------
   7. 卡片与网格
   -------------------------------------------------------------------------- */
.grid {
  display: grid;
  gap: 22px;
}
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.card {
  position: relative;
  padding: 30px 28px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease),
              box-shadow 0.28s var(--ease);
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

/* 卡片顶部的渐变亮边，hover 时点亮 */
.card--glow::before {
  content: '';
  position: absolute;
  inset: -1px -1px auto -1px;
  height: 2px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: var(--gradient-brand);
  opacity: 0;
  transition: opacity 0.28s var(--ease);
}
.card--glow:hover::before { opacity: 1; }

.card__icon {
  width: 46px;
  height: 46px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--gradient-soft);
  border: 1px solid var(--border-subtle);
}
.card__icon svg { width: 22px; height: 22px; stroke: var(--accent-cyan); }

.card__title { margin-bottom: 10px; }
.card__text { font-size: 0.95rem; color: var(--text-secondary); margin: 0; }

/* 卡片内的要点列表 */
.point-list {
  margin: 20px 0 0;
  display: grid;
  gap: 9px;
}
.point-list li {
  position: relative;
  padding-left: 22px;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.point-list li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--gradient-brand);
}

/* --------------------------------------------------------------------------
   8. 状态徽章（规划中 / 研发中）
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 620;
  letter-spacing: 0.04em;
  border-radius: 999px;
  white-space: nowrap;
}
.badge--planned {
  color: var(--warn);
  background: rgba(251, 191, 36, 0.12);
  border: 1px solid rgba(251, 191, 36, 0.32);
}
.badge--planned::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--warn);
}

/* 路线图区块顶部的说明条：明确告知产品尚未发布 */
.notice {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 40px;
  padding: 18px 22px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  background: rgba(251, 191, 36, 0.07);
  border: 1px solid rgba(251, 191, 36, 0.24);
  border-radius: var(--radius-md);
}
.notice__icon { flex-shrink: 0; color: var(--warn); font-size: 1.05rem; line-height: 1.6; }

/* --------------------------------------------------------------------------
   9. 路线图产品块
   -------------------------------------------------------------------------- */
.roadmap-item {
  padding: clamp(28px, 4vw, 44px);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
.roadmap-item + .roadmap-item { margin-top: 26px; }

.roadmap-item::after {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: var(--gradient-soft);
  filter: blur(50px);
  pointer-events: none;
}

.roadmap-item__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  position: relative;
}

.roadmap-item__lead {
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 14px;
  position: relative;
}

.roadmap-item__desc { position: relative; max-width: 780px; }

.feature-grid {
  position: relative;
  margin-top: 30px;
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.feature {
  padding: 18px 20px;
  background: rgba(7, 11, 20, 0.5);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}
.feature h4 {
  margin-bottom: 7px;
  font-size: 0.97rem;
  color: var(--text-primary);
}
.feature p {
  margin: 0;
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.62;
}

/* --------------------------------------------------------------------------
   10. 信息表（关于页的工商信息）
   -------------------------------------------------------------------------- */
.info-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.info-table th,
.info-table td {
  padding: 16px 22px;
  text-align: left;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: top;
}
.info-table tr:last-child th,
.info-table tr:last-child td { border-bottom: none; }
.info-table th {
  width: 30%;
  min-width: 120px;
  font-weight: 550;
  color: var(--text-muted);
  background: rgba(7, 11, 20, 0.35);
}
.info-table td { color: var(--text-primary); }

/* --------------------------------------------------------------------------
   11. 联系方式卡片
   -------------------------------------------------------------------------- */
.contact-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 26px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.contact-card:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.contact-card__label {
  font-size: 0.78rem;
  font-weight: 620;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.contact-card__value {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text-primary);
  word-break: break-word;
}
a.contact-card__value:hover { color: var(--accent-cyan); }
.contact-card__note { font-size: 0.87rem; color: var(--text-muted); margin: 0; }

/* --------------------------------------------------------------------------
   12. FAQ
   -------------------------------------------------------------------------- */
.faq-item {
  padding: 24px 26px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}
.faq-item + .faq-item { margin-top: 14px; }
.faq-item h3 { margin-bottom: 9px; font-size: 1.02rem; }
.faq-item p { margin: 0; font-size: 0.93rem; color: var(--text-secondary); }

/* --------------------------------------------------------------------------
   13. CTA 区块
   -------------------------------------------------------------------------- */
.cta-band {
  padding: clamp(40px, 6vw, 64px);
  text-align: center;
  background: var(--gradient-soft);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}
.cta-band h2 { margin-bottom: 12px; }
.cta-band p { max-width: 520px; margin: 0 auto 28px; }

/* --------------------------------------------------------------------------
   14. 法律文本页
   -------------------------------------------------------------------------- */
.legal {
  max-width: 800px;
  margin: 0 auto;
  padding-bottom: 80px;
}
.legal h2 {
  margin-top: 44px;
  font-size: 1.35rem;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}
.legal h2:first-of-type { margin-top: 0; }
.legal h3 { margin-top: 26px; font-size: 1.05rem; }
.legal p, .legal li { font-size: 0.96rem; }
.legal ul {
  margin: 0 0 1.1em;
  padding-left: 0;
  display: grid;
  gap: 8px;
}
.legal ul li {
  position: relative;
  padding-left: 20px;
  color: var(--text-secondary);
}
.legal ul li::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 0.65em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-cyan);
}
.legal__meta {
  margin-bottom: 36px;
  padding: 14px 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

/* --------------------------------------------------------------------------
   15. 页脚
   -------------------------------------------------------------------------- */
.footer {
  margin-top: 40px;
  padding: clamp(48px, 6vw, 68px) 0 32px;
  background: rgba(7, 11, 20, 0.7);
  border-top: 1px solid var(--border-subtle);
}

.footer__grid {
  display: grid;
  gap: 40px;
  grid-template-columns: minmax(240px, 1.4fr) repeat(auto-fit, minmax(150px, 1fr));
  margin-bottom: 44px;
}

.footer__brand .logo { margin-bottom: 14px; }
.footer__tagline {
  font-size: 0.92rem;
  color: var(--text-muted);
  max-width: 300px;
}

.footer__col h4 {
  margin-bottom: 16px;
  font-size: 0.78rem;
  font-weight: 620;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.footer__col li + li { margin-top: 10px; }
.footer__col a,
.footer__col span {
  font-size: 0.91rem;
  color: var(--text-secondary);
}
.footer__col a:hover { color: var(--accent-cyan); }

.footer__contact li {
  display: flex;
  gap: 8px;
  font-size: 0.91rem;
  line-height: 1.6;
}
.footer__contact .label { color: var(--text-muted); flex-shrink: 0; }

.footer__bottom {
  padding-top: 26px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.footer__bottom a { color: var(--text-muted); }
.footer__bottom a:hover { color: var(--accent-cyan); }

/* --------------------------------------------------------------------------
   16. 占位符高亮（开发期用，提醒还没填真实信息）
   -------------------------------------------------------------------------- */
.is-placeholder {
  display: inline-block;
  padding: 1px 8px;
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--danger);
  background: rgba(248, 113, 113, 0.10);
  border: 1px dashed rgba(248, 113, 113, 0.5);
  border-radius: 4px;
}

/* --------------------------------------------------------------------------
   17. 入场动画
   -------------------------------------------------------------------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}
/* 同组元素依次入场 */
[data-reveal][data-reveal-delay='1'] { transition-delay: 0.08s; }
[data-reveal][data-reveal-delay='2'] { transition-delay: 0.16s; }
[data-reveal][data-reveal-delay='3'] { transition-delay: 0.24s; }

/* --------------------------------------------------------------------------
   18. 响应式
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .nav-toggle { display: block; order: 3; }

  .nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px 16px 18px;
    background: rgba(7, 11, 20, 0.97);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-subtle);
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 12px 14px; font-size: 1rem; }

  .header__actions { margin-left: auto; }

  .info-table th,
  .info-table td { display: block; width: 100%; }
  .info-table th { padding-bottom: 4px; border-bottom: none; }
  .info-table td { padding-top: 0; }

  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }

  .btn { width: 100%; }
  .btn-row { flex-direction: column; }
}

@media (max-width: 380px) {
  .logo span { font-size: 0.9rem; }
}

/* --------------------------------------------------------------------------
   19. 减少动效偏好
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

/* --------------------------------------------------------------------------
   20. 打印
   -------------------------------------------------------------------------- */
@media print {
  body { background: #fff; color: #000; }
  body::before, .hero__canvas, .header, .footer { display: none !important; }
  h1, h2, h3, h4, .info-table td { color: #000; }
  .text-gradient, .eyebrow { -webkit-text-fill-color: #000; color: #000; }
}