/* ==========================================================================
   众声 · 网页版产品宣传
   零依赖样式表。浅色为默认主题，深色通过 html[data-theme="dark"] 覆盖变量。
   ========================================================================== */

/* 1. 设计变量 ------------------------------------------------------------- */
:root {
  --bg: #FFFFFF;
  --bg-soft: #F4F5F7;
  --surface: #FFFFFF;
  --surface-2: #F7F8FA;
  --ink: #0B0B0C;
  --ink-2: #3A3A3C;
  --muted: #6E6E73;
  --line: rgba(11, 11, 12, 0.14);
  --line-soft: rgba(11, 11, 12, 0.08);
  --brand: #1D9BF0;
  --brand-hover: #0F8AE0;
  --brand-soft: #E4F1FD;
  --brand-tint: rgba(29, 155, 240, 0.09);
  --navy: #0A265B;
  --navy-deep: #061A40;
  --navy-lift: #123A7E;
  --warm: #E08442;
  --header-bg: rgba(255, 255, 255, 0.9);
  --shadow-s: 0 1px 2px rgba(11, 11, 12, 0.05), 0 2px 10px rgba(11, 11, 12, 0.05);
  --shadow-m: 0 12px 32px rgba(11, 11, 12, 0.1);
  --shadow-l: 0 28px 70px rgba(11, 11, 12, 0.16);
  --radius-s: 10px;
  --radius-m: 16px;
  --radius-l: 24px;
  --radius-xl: 32px;
  --wrap: 1160px;
  --gutter: clamp(20px, 5vw, 40px);
  --section-y: clamp(64px, 8vw, 118px);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC",
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}

html[data-theme="dark"] {
  --bg: #1C1C1E;
  --bg-soft: #232326;
  --surface: #2C2C2E;
  --surface-2: #232326;
  --ink: #FFFFFF;
  --ink-2: #D9D9DE;
  --muted: #8E8E93;
  --line: rgba(255, 255, 255, 0.16);
  --line-soft: rgba(255, 255, 255, 0.09);
  --brand: #4FB3F7;
  --brand-hover: #6EC1F9;
  --brand-soft: rgba(79, 179, 247, 0.18);
  --brand-tint: rgba(79, 179, 247, 0.12);
  --warm: #F0A05C;
  --header-bg: rgba(28, 28, 30, 0.88);
  --shadow-s: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-m: 0 14px 34px rgba(0, 0, 0, 0.45);
  --shadow-l: 0 30px 72px rgba(0, 0, 0, 0.55);
  color-scheme: dark;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.3s ease, color 0.3s ease;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p, ul, ol, figure { margin: 0; }
ul, ol { list-style: none; padding: 0; }
button { font: inherit; color: inherit; }
svg { fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 8px;
}

.skip-link {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--brand);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transform: translateY(-160%);
  transition: transform 0.2s ease;
}
.skip-link:focus { transform: translateY(0); }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* 3. 通用组件 ------------------------------------------------------------ */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

main > section { scroll-margin-top: 84px; }

.section { padding-block: var(--section-y); }
.section--features { background: var(--bg-soft); }
.section--notes { background: var(--bg-soft); }

.eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--brand);
  margin-bottom: 14px;
}
.eyebrow--onDark { color: #9CCBF5; }

h2 {
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.32;
  font-weight: 700;
  letter-spacing: 0.005em;
  text-wrap: balance;
}

.section-head { max-width: 780px; }
.section-head .lead {
  margin-top: 16px;
  font-size: clamp(16px, 1.5vw, 18.5px);
  line-height: 1.85;
  color: var(--muted);
}

.fine {
  margin-top: 14px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  cursor: pointer;
  transition: transform 0.18s ease, background-color 0.18s ease,
    border-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--sm { padding: 10px 18px; font-size: 14px; }

.btn--solid {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 8px 22px rgba(97, 64, 213, 0.28);
}
.btn--solid:hover { background: var(--brand-hover); }
.btn--solidSoft { background: #fff; color: #0A265B; box-shadow: 0 10px 26px rgba(6, 20, 50, 0.28); }
.btn--solidSoft:hover { background: #E4F1FD; }

.btn--outline {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--line);
  box-shadow: var(--shadow-s);
}
.btn--outline:hover { border-color: var(--brand); color: var(--brand); }

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn--ghost:hover { border-color: var(--brand); color: var(--brand); }

.btn--onDark { color: #fff; border-color: rgba(255, 255, 255, 0.38); background: rgba(255, 255, 255, 0.07); }
.btn--onDark:hover { color: #fff; border-color: #fff; background: rgba(255, 255, 255, 0.16); }

/* 4. 页头与导航 ---------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--header-bg);
  -webkit-backdrop-filter: saturate(1.5) blur(14px);
  backdrop-filter: saturate(1.5) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.site-header.is-scrolled { border-bottom-color: var(--line-soft); box-shadow: var(--shadow-s); }

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 68px;
}

.brand { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }
.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  box-shadow: 0 3px 10px rgba(97, 64, 213, 0.3);
}
.brand-name { font-size: 19px; font-weight: 700; letter-spacing: 0.05em; }

.nav { margin-inline: auto; }
.nav ul { display: flex; gap: 4px; }
.nav a {
  display: block;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 15px;
  color: var(--muted);
  transition: color 0.18s ease, background-color 0.18s ease;
}
.nav a:hover { color: var(--ink); background: var(--brand-tint); }
.nav a.is-active { color: var(--brand); background: var(--brand-tint); font-weight: 600; }

.header-actions { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.18s ease, color 0.18s ease, background-color 0.18s ease;
}
.theme-toggle:hover { border-color: var(--brand); color: var(--brand); }
.theme-toggle__icon { width: 16px; height: 16px; flex: 0 0 auto; }
.theme-toggle__icon--moon { display: none; }
html[data-theme="dark"] .theme-toggle__icon--sun { display: none; }
html[data-theme="dark"] .theme-toggle__icon--moon { display: block; }

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  cursor: pointer;
}
.nav-toggle svg { width: 20px; height: 20px; }
.nav-toggle__close { display: none; }
.nav-toggle[aria-expanded="true"] .nav-toggle__open { display: none; }
.nav-toggle[aria-expanded="true"] .nav-toggle__close { display: block; }

/* 5. 品牌首屏 ------------------------------------------------------------ */
.hero {
  position: relative;
  margin: clamp(12px, 1.6vw, 22px) clamp(12px, 2.4vw, 28px) 0;
  border-radius: clamp(20px, 2.4vw, 34px);
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(72% 62% at 82% 22%, rgba(60, 130, 220, 0.45) 0%, rgba(60, 130, 220, 0) 62%),
    radial-gradient(60% 55% at 8% 88%, rgba(29, 155, 240, 0.22) 0%, rgba(29, 155, 240, 0) 60%),
    linear-gradient(158deg, #061A40 0%, #0A265B 46%, #123A7E 100%);
}

.hero-inner {
  position: relative;
  display: grid;
  gap: clamp(30px, 4vw, 54px);
  max-width: var(--wrap);
  margin-inline: auto;
  padding: clamp(48px, 6.4vw, 92px) clamp(24px, 4vw, 56px) clamp(52px, 6.6vw, 96px);
}

.hero-copy { min-width: 0; }

.hero-title { display: block; }

.hero-title__brand {
  display: block;
  font-size: clamp(52px, 9.5vw, 104px);
  line-height: 1;
  font-weight: 800;
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.hero-title__claim {
  display: block;
  font-size: clamp(23px, 3.1vw, 38px);
  line-height: 1.38;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.hero-sub {
  margin-top: 18px;
  max-width: 46ch;
  font-size: clamp(15px, 1.4vw, 17.5px);
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.78);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero-note {
  margin-top: 20px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.72);
}

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: clamp(230px, 30vw, 360px);
  min-width: 0;
}

.echo {
  position: absolute;
  inset: 0;
  margin: auto;
  width: min(74%, 300px);
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  pointer-events: none;
}
.echo--1 { animation: echo 6s ease-out infinite; }
.echo--2 { animation: echo 6s ease-out infinite 2s; }
.echo--3 { animation: echo 6s ease-out infinite 4s; }

@keyframes echo {
  0% { transform: scale(0.72); opacity: 0; }
  22% { opacity: 0.85; }
  100% { transform: scale(1.28); opacity: 0; }
}

.hero-icon {
  position: relative;
  z-index: 2;
  width: clamp(124px, 17vw, 188px);
  border-radius: 26%;
  box-shadow: 0 30px 64px rgba(10, 4, 30, 0.48), 0 0 0 1px rgba(255, 255, 255, 0.14);
}

.hero-visual-note {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.72);
}

/* 6. 生活分享场景 -------------------------------------------------------- */
.scene-figure { margin-top: clamp(30px, 4vw, 52px); }
.scene-figure img {
  width: 100%;
  aspect-ratio: 1672 / 941;
  object-fit: cover;
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-l);
}
.scene-figure figcaption {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 15px;
  font-size: 13.5px;
  color: var(--muted);
}
.scene-figure figcaption::before {
  content: "";
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--warm);
}

.trio {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 2.6vw, 36px);
  margin-top: clamp(30px, 4vw, 48px);
}
.trio li { min-width: 0; }
.trio h3 {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 8px;
}
.trio h3::before {
  content: "";
  flex: 0 0 auto;
  width: 24px;
  height: 2px;
  border-radius: 2px;
  background: var(--brand);
}
.trio p { color: var(--muted); font-size: 15.5px; }

/* 7. 关键能力 ------------------------------------------------------------ */
.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(14px, 1.5vw, 20px);
  margin-top: clamp(32px, 4vw, 58px);
}
.bento > li { min-width: 0; }

.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(22px, 2.3vw, 30px);
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-s);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-m);
  border-color: var(--line);
}

.card__icon {
  position: absolute;
  top: clamp(20px, 2.2vw, 26px);
  right: clamp(20px, 2.2vw, 26px);
  width: 26px;
  height: 26px;
  color: var(--brand);
  opacity: 0.5;
}

.card__num {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--brand);
}

.card h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.45;
  padding-right: 36px;
}
.card p { color: var(--muted); font-size: 15.5px; }

.card--lead {
  background:
    linear-gradient(148deg, var(--brand-tint) 0%, rgba(0, 0, 0, 0) 62%),
    var(--surface);
}
.card--lead h3 { font-size: clamp(22px, 2.1vw, 27px); }

.card--dark {
  background: linear-gradient(156deg, #061A40 0%, #0A265B 55%, #123A7E 100%);
  border-color: transparent;
  color: #fff;
}
.card--dark .card__num { color: #9CCBF5; }
.card--dark p { color: rgba(255, 255, 255, 0.8); }
.card--dark .card__icon { color: #9CCBF5; opacity: 0.75; }

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 14px;
}
.chip {
  padding: 5px 13px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--line-soft);
  font-size: 13.5px;
  color: var(--ink-2);
  white-space: nowrap;
}
.card--dark .chip {
  background: rgba(255, 255, 255, 0.13);
  border-color: rgba(255, 255, 255, 0.2);
  color: #fff;
}

/* 8. 真实界面 ------------------------------------------------------------ */
.screen-row {
  display: grid;
  gap: clamp(28px, 4vw, 60px);
  align-items: center;
  margin-top: clamp(44px, 5.4vw, 78px);
}

.screen-copy { min-width: 0; max-width: 52ch; }
.screen-copy h3 {
  font-size: clamp(21px, 2.2vw, 27px);
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 14px;
}
.screen-copy p { color: var(--muted); font-size: 16px; }

.screen-media { min-width: 0; }

/* 浅色 / 深色对比 */
.theme-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(12px, 1.6vw, 22px);
}
.shot { display: flex; flex-direction: column; gap: 11px; min-width: 0; }
.shot figcaption { font-size: 13.5px; color: var(--muted); text-align: center; }

.crop {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-m);
  border: 1px solid var(--line-soft);
  background: var(--surface-2);
  box-shadow: var(--shadow-s);
}
.crop img { width: 100%; height: auto; }

/* 个人主页截图素材已预先裁好（1206×1389，含返回栏、资料区、分栏与一条动态） */
.screen-stack { display: grid; gap: clamp(12px, 1.8vw, 20px); min-width: 0; }

/* 视频页右侧操作栏：竖长条，落在深色底上 */
.crop--rail {
  max-width: 200px;
  margin-inline: auto;
  background: #000000;
  border-color: rgba(255, 255, 255, 0.12);
}

/* 圆角裁切会露出容器底色，按截图自身的背景色填，避免出现深色缺口 */
.crop--light { background: #FFFFFF; }
.crop--dark { background: #1C1C1E; }

/* 9. 体验说明 ------------------------------------------------------------ */
.notes-inner { display: grid; gap: clamp(26px, 3vw, 56px); align-items: start; }

.notes-list { display: grid; gap: 16px; min-width: 0; }
.notes-list li {
  display: flex;
  gap: 13px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15.5px;
  color: var(--muted);
}
.notes-list li:last-child { border-bottom: 0; padding-bottom: 0; }
.notes-list li::before {
  content: "";
  flex: 0 0 auto;
  width: 16px;
  height: 2px;
  margin-top: 13px;
  border-radius: 2px;
  background: var(--brand);
}

/* 10. 收尾 --------------------------------------------------------------- */
.section--closing { padding-block: clamp(48px, 6vw, 96px) clamp(64px, 8vw, 118px); }

.closing-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(46px, 6vw, 86px) clamp(24px, 4vw, 64px);
  border-radius: clamp(20px, 2.4vw, 34px);
  text-align: center;
  color: #fff;
  background:
    radial-gradient(70% 80% at 50% 0%, rgba(60, 130, 220, 0.5) 0%, rgba(60, 130, 220, 0) 60%),
    linear-gradient(160deg, #061A40 0%, #0A265B 62%, #123A7E 100%);
}
.closing-ring {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(120%, 620px);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  pointer-events: none;
}
.closing-icon {
  position: relative;
  width: 62px;
  border-radius: 26%;
  margin: 0 auto 22px;
  box-shadow: 0 12px 30px rgba(10, 4, 30, 0.4);
}
.closing-panel h2 {
  position: relative;
  font-size: clamp(25px, 3.4vw, 40px);
  text-wrap: balance;
}
.closing-panel p {
  position: relative;
  margin-top: 14px;
  font-size: clamp(15px, 1.5vw, 18px);
  color: rgba(255, 255, 255, 0.8);
}
.closing-actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
}

/* 11. 页脚 --------------------------------------------------------------- */
.site-footer {
  background: var(--bg-soft);
  border-top: 1px solid var(--line-soft);
  padding-block: clamp(36px, 4.4vw, 60px);
}
.footer-inner { display: grid; gap: 22px; }
.footer-brand { min-width: 0; }
.footer-mark { width: 30px; border-radius: 9px; margin-bottom: 10px; }
.footer-name { font-size: 17px; font-weight: 700; letter-spacing: 0.05em; }
.footer-state { font-size: 13.5px; color: var(--muted); }
.footer-fine {
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--muted);
  max-width: 62ch;
}

/* 12. 滚动出现动画 ------------------------------------------------------- */
.js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s cubic-bezier(0.2, 0.7, 0.3, 1),
    transform 0.6s cubic-bezier(0.2, 0.7, 0.3, 1);
}
.js .reveal.is-in { opacity: 1; transform: none; }

.js .bento > li.reveal:nth-child(3n + 2) { transition-delay: 0.07s; }
.js .bento > li.reveal:nth-child(3n + 3) { transition-delay: 0.14s; }
.js .trio > li.reveal:nth-child(2) { transition-delay: 0.08s; }
.js .trio > li.reveal:nth-child(3) { transition-delay: 0.16s; }
.js .notes-list > li.reveal:nth-child(2) { transition-delay: 0.06s; }
.js .notes-list > li.reveal:nth-child(3) { transition-delay: 0.12s; }
.js .notes-list > li.reveal:nth-child(4) { transition-delay: 0.18s; }
.js .notes-list > li.reveal:nth-child(5) { transition-delay: 0.24s; }

/* 13. 响应式 ------------------------------------------------------------- */
@media (min-width: 900px) {
  .hero-inner { grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr); align-items: center; }

  .screen-row { grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); }
  .screen-row--flip .screen-copy { order: 2; }
  .screen-row--flip .screen-media { order: 1; }

  .notes-inner { grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); }

  .footer-inner { grid-template-columns: auto minmax(0, 1fr); gap: 56px; }
}

@media (max-width: 1040px) {
  .bento { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .span-7 { grid-column: span 6; }
  .span-5, .span-6, .span-4 { grid-column: span 3; }
}

@media (max-width: 900px) {
  .nav {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    margin: 0;
    padding: 8px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-m);
    box-shadow: var(--shadow-m);
    display: none;
  }
  .nav.is-open { display: block; }
  .nav ul { flex-direction: column; gap: 2px; }
  .nav a { padding: 12px 14px; font-size: 16px; }

  /* 导航面板脱离文档流后，操作区自己顶到右侧 */
  .header-actions { margin-left: auto; }
  .nav-toggle { display: inline-flex; }
  .header-inner { gap: 10px; }
}

@media (max-width: 700px) {
  .bento { grid-template-columns: 1fr; }
  .bento > li { grid-column: 1 / -1; }

  .trio { grid-template-columns: 1fr; gap: 20px; }
  .trio h3 { font-size: 18px; }
}

@media (max-width: 640px) {
  .header-cta { display: none; }
  .hero-actions .btn { flex: 1 1 auto; }
  .closing-actions .btn { flex: 1 1 auto; }
}

@media (max-width: 430px) {
  .theme-toggle__text { display: none; }
  .theme-toggle { padding: 8px 11px; }
}

/* 14. 减少动态效果 ------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  body { transition: none; }
  .btn:hover, .card:hover { transform: none; }
  .skip-link { transition: none; }
  .echo { animation: none; opacity: 0; }

  .js .reveal,
  .js .reveal.is-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .js .bento > li.reveal,
  .js .trio > li.reveal,
  .js .notes-list > li.reveal { transition-delay: 0s; }
}

/* ==========================================================================
   宣传片与招股书（2026-10-29 新增）
   ========================================================================== */
.section--film .film-stage {
  display: flex;
  justify-content: center;
}

.film-video {
  display: block;
  width: min(420px, 86vw);
  height: auto;
  aspect-ratio: 9 / 16;
  background: var(--navy-deep);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-l);
}

.prospectus-grid {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: clamp(20px, 4vw, 44px);
  align-items: start;
}

.prospectus-cover img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-m);
}

.prospectus-pages {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.prospectus-pages img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-s);
  box-shadow: var(--shadow-s);
}

.prospectus-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.prospectus-contact {
  color: var(--muted);
  font-size: 0.95rem;
}

.prospectus-contact strong {
  color: var(--ink);
  font-weight: 600;
}

.prospectus-note {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.7;
}

@media (max-width: 760px) {
  .prospectus-grid {
    grid-template-columns: 1fr;
  }

  .prospectus-cover {
    max-width: 240px;
  }
}