/* ==========================================================================
   恒实天成科技 VEN — 站点样式
   静态多页站点 · 无构建步骤 · 移动优先
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 颜色 */
  --bg: #f6f8fb;
  --surface: #ffffff;
  --ink-900: #0b1b33;
  --ink-800: #101f38;
  --ink-700: #182b4a;
  --text-900: #0f1f38;
  --text-700: #33455f;
  --text-600: #42536b;
  --text-500: #5d6b80;
  --line: #e3e9f2;
  --line-soft: #edf1f7;

  --brand: #2563eb;
  --brand-strong: #1d4ed8;
  --brand-deep: #173ea8;
  --brand-soft: #eaf1fe;
  --brand-softer: #f2f6ff;

  /* 产品色 */
  --c-fate: #7c3aed;      --c-fate-soft: #f1eafe;   /* 命运解码 */
  --c-hanzi: #d97706;     --c-hanzi-soft: #fdf0dd;  /* AI 语音绘本 */
  --c-sprite: #059669;    --c-sprite-soft: #e2f6ee; /* Sprite Cut */
  --c-pd: #2563eb;        --c-pd-soft: #eaf1fe;     /* PD租房 */
  --c-yunce: #0891b2;     --c-yunce-soft: #e1f4fa;  /* 云策 */
  --c-mao: #db2777;       --c-mao-soft: #fce7f1;    /* 小猫听听 */

  /* 圆角 / 阴影 */
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(15, 31, 56, .05), 0 2px 10px rgba(15, 31, 56, .06);
  --shadow-md: 0 6px 16px rgba(15, 31, 56, .09), 0 12px 32px rgba(15, 31, 56, .07);
  --shadow-lg: 0 16px 40px rgba(15, 31, 56, .16);

  /* 字体 */
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC",
          "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;

  --container: 1160px;
  --header-h: 68px;
}

/* ---------- 2. 重置与基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-600);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--brand); text-decoration: none; }
a:hover { color: var(--brand-strong); }
ul, ol { padding: 0; margin: 0; list-style: none; }
h1, h2, h3, h4 { color: var(--text-900); line-height: 1.3; margin: 0 0 .6em; font-weight: 700; }
h1 { font-size: clamp(1.9rem, 4.5vw, 3rem); letter-spacing: -.01em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); letter-spacing: -.01em; }
h3 { font-size: 1.18rem; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }
strong { color: var(--text-900); font-weight: 600; }
::selection { background: rgba(37, 99, 235, .18); }

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

.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 200;
  background: var(--ink-900); color: #fff; padding: 10px 18px;
  border-radius: 0 0 10px 10px; transition: top .2s;
}
.skip-link:focus { top: 0; color: #fff; }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px;
  margin: -1px; padding: 0; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- 3. 布局 ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 72px 0; }
.section-sm { padding: 48px 0; }
.section-dark {
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(37, 99, 235, .28), transparent 60%),
    radial-gradient(700px 380px at 8% 110%, rgba(124, 58, 237, .18), transparent 60%),
    var(--ink-900);
  color: rgba(255, 255, 255, .78);
}
.section-dark h2, .section-dark h3, .section-dark strong { color: #fff; }

.section-head { max-width: 640px; margin: 0 auto 48px; text-align: center; }
.section-head.left { margin: 0 0 40px; text-align: left; }
.section-head .lead { font-size: 1.05rem; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .82rem; font-weight: 600; letter-spacing: .12em;
  color: var(--brand); text-transform: uppercase;
  background: var(--brand-soft);
  border: 1px solid #d3e2fc;
  padding: 4px 14px; border-radius: 999px; margin-bottom: 16px;
}
.eyebrow::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--brand);
}
.section-dark .eyebrow, .hero .eyebrow {
  color: #9db9f5; background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .16);
}
.section-dark .eyebrow::before, .hero .eyebrow::before { background: #6d9bf8; }

.lead { font-size: 1.05rem; color: var(--text-500); }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ---------- 4. 按钮 / 标签 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 11px 26px;
  border: 1px solid transparent; border-radius: 10px;
  font: inherit; font-size: .95rem; font-weight: 600;
  cursor: pointer; transition: all .2s ease; white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 6px 16px rgba(37, 99, 235, .28); }
.btn-primary:hover { background: var(--brand-strong); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 22px rgba(37, 99, 235, .34); }
.btn-dark { background: var(--ink-900); color: #fff; }
.btn-dark:hover { background: var(--ink-700); color: #fff; transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--text-900); border-color: #c9d5e5; }
.btn-outline:hover { border-color: var(--brand); color: var(--brand); background: var(--brand-softer); transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--ink-900); }
.btn-light:hover { background: #eef3fb; color: var(--ink-900); transform: translateY(-2px); }
.btn-ghost-light { background: rgba(255, 255, 255, .08); color: #fff; border-color: rgba(255, 255, 255, .35); }
.btn-ghost-light:hover { background: rgba(255, 255, 255, .16); color: #fff; transform: translateY(-2px); }
.btn-sm { min-height: 40px; padding: 8px 18px; font-size: .88rem; }

.tag {
  display: inline-flex; align-items: center;
  font-size: .76rem; font-weight: 500; line-height: 1;
  color: var(--text-500); background: var(--line-soft);
  border: 1px solid var(--line);
  padding: 6px 11px; border-radius: 999px; white-space: nowrap;
}
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }

/* 平台标签（带小圆点） */
.pt { display: inline-flex; align-items: center; gap: 6px; }
.pt::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--brand); }

/* ---------- 5. 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(1.6) blur(14px);
  -webkit-backdrop-filter: saturate(1.6) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s;
}
.site-header.is-scrolled { box-shadow: 0 4px 20px rgba(15, 31, 56, .08); }
.header-inner { display: flex; align-items: center; gap: 20px; height: var(--header-h); }

.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text-900); }
.brand:hover { color: var(--text-900); }
.brand-logo { width: 34px; height: 34px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; font-weight: 800; letter-spacing: .02em; font-size: 1.15rem; }
.brand-text i { font-style: normal; font-size: .68rem; font-weight: 500; color: var(--text-500); letter-spacing: .08em; margin-top: 3px; }

.main-nav { margin-left: auto; display: none; }
.main-nav > ul { display: flex; align-items: center; gap: 4px; }
.main-nav a, .dropdown-toggle {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 9px 14px; border: 0; border-radius: 9px;
  font: inherit; font-size: .92rem; font-weight: 500;
  color: var(--text-700); background: transparent; cursor: pointer;
  transition: all .18s;
}
.main-nav a:hover, .dropdown-toggle:hover { color: var(--brand); background: var(--brand-softer); }
.main-nav a.is-active { color: var(--brand); background: var(--brand-soft); font-weight: 600; }
.dropdown-toggle svg { width: 14px; height: 14px; transition: transform .2s; }
.dropdown-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }

.has-dropdown { position: relative; }
.dropdown {
  position: absolute; top: calc(100% + 10px); left: 50%;
  transform: translate(-50%, 8px);
  width: 560px; padding: 14px;
  background: #fff; border: 1px solid var(--line);
  border-radius: 16px; box-shadow: var(--shadow-lg);
  display: grid; grid-template-columns: 1fr 1fr; gap: 4px;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
  z-index: 120;
}
.has-dropdown.is-open .dropdown,
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown {
  opacity: 1; visibility: visible; pointer-events: auto; transform: translate(-50%, 0);
}
.dropdown a {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 11px 12px; border-radius: 11px;
}
.dropdown a:hover { background: var(--brand-softer); }
.dd-icon {
  flex: none; width: 38px; height: 38px; border-radius: 10px;
  display: grid; place-items: center; margin-top: 2px;
}
.dd-icon svg { width: 19px; height: 19px; }
.dd-text b { display: block; font-size: .9rem; color: var(--text-900); font-weight: 600; }
.dd-text span { display: block; font-size: .78rem; color: var(--text-500); line-height: 1.5; margin-top: 1px; }

.header-cta { display: none; }
@media (min-width: 1024px) {
  .main-nav { display: block; }
  .header-cta { display: inline-flex; margin-left: 8px; }
  .menu-toggle { display: none !important; }
}

.menu-toggle {
  margin-left: auto; width: 44px; height: 44px;
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  background: transparent; border: 1px solid var(--line); border-radius: 10px; cursor: pointer;
}
.menu-toggle span {
  width: 18px; height: 2px; border-radius: 2px;
  background: var(--text-900); transition: transform .25s, opacity .2s;
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端菜单 */
.mobile-menu {
  display: block; overflow: hidden; max-height: 0;
  background: #fff; border-bottom: 1px solid var(--line);
  transition: max-height .3s ease;
}
.mobile-menu.is-open { max-height: calc(100vh - var(--header-h)); overflow-y: auto; }
.mobile-menu ul { padding: 8px 24px 20px; }
.mobile-menu .mm-label {
  font-size: .75rem; font-weight: 600; letter-spacing: .1em;
  color: var(--text-500); padding: 18px 12px 6px;
}
.mobile-menu a {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 48px; padding: 6px 12px; border-radius: 10px;
  color: var(--text-900); font-weight: 500; font-size: .98rem;
}
.mobile-menu a:hover, .mobile-menu a.is-active { background: var(--brand-soft); color: var(--brand); }
.mobile-menu a svg { width: 15px; height: 15px; color: var(--text-500); }
.mobile-menu .mm-products a { padding-left: 26px; font-size: .92rem; color: var(--text-700); }
.mobile-menu .mm-cta a {
  display: inline-flex; justify-content: center; width: 100%;
  background: var(--brand); color: #fff; font-weight: 600;
}
.mobile-menu .mm-cta a:hover { background: var(--brand-strong); color: #fff; }
.mobile-menu .mm-cta { padding: 16px 0 8px; }

/* ---------- 6. 首页 Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1000px 480px at 78% -8%, rgba(37, 99, 235, .38), transparent 62%),
    radial-gradient(760px 420px at 4% 108%, rgba(124, 58, 237, .22), transparent 62%),
    var(--ink-900);
  color: rgba(255, 255, 255, .78);
  padding: 96px 0 128px;
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(720px 480px at 70% 30%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(720px 480px at 70% 30%, #000 30%, transparent 78%);
}
.hero-inner { position: relative; display: grid; gap: 56px; align-items: center; }
@media (min-width: 1024px) { .hero-inner { grid-template-columns: 1.05fr .95fr; } }

.hero h1 { color: #fff; margin-bottom: 20px; }
.hero .lead { color: rgba(255, 255, 255, .75); font-size: 1.08rem; max-width: 540px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0 26px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.hero-tags .tag {
  color: rgba(255, 255, 255, .82);
  background: rgba(255, 255, 255, .07);
  border-color: rgba(255, 255, 255, .16);
}
.hero-tags .tag.pt::before { background: #6d9bf8; }

/* Hero 右侧舞台 */
.hero-stage { position: relative; height: 520px; display: none; }
@media (min-width: 1024px) { .hero-stage { display: block; } }
.stage-phone {
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  z-index: 3;
}
.stage-chip {
  position: absolute; z-index: 4;
  display: flex; align-items: center; gap: 12px;
  background: rgba(255, 255, 255, .96);
  border-radius: 14px; padding: 12px 16px;
  box-shadow: 0 14px 36px rgba(4, 12, 26, .4);
  animation: float 6s ease-in-out infinite alternate;
}
.stage-chip .sc-icon { flex: none; width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; }
.stage-chip .sc-icon svg { width: 18px; height: 18px; }
.stage-chip b { display: block; font-size: .84rem; color: var(--text-900); line-height: 1.3; }
.stage-chip span { display: block; font-size: .72rem; color: var(--text-500); line-height: 1.3; }
.chip-fate { top: 6%; left: 0; animation-delay: .4s; }
.chip-sprite { top: 24%; right: -2%; animation-delay: 1.6s; }
.chip-hanzi { bottom: 14%; left: 2%; animation-delay: 1s; }
.chip-yunce { bottom: 4%; right: 6%; animation-delay: 2.2s; }
@keyframes float { from { transform: translateY(-6px); } to { transform: translateY(8px); } }

/* ---------- 7. 数据带 ---------- */
.stats-wrap { position: relative; z-index: 5; margin-top: -72px; padding-bottom: 8px; }
.stats {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--line);
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow-md);
}
.stat { background: #fff; padding: 28px 18px; text-align: center; }
.stat b {
  display: block; font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--text-900); font-weight: 800; letter-spacing: -.01em;
  font-variant-numeric: tabular-nums;
}
.stat b em { font-style: normal; font-size: .6em; color: var(--brand); margin-left: 2px; }
.stat span { font-size: .86rem; color: var(--text-500); }
@media (min-width: 768px) { .stats { grid-template-columns: repeat(4, 1fr); } .stat { padding: 34px 20px; } }

/* ---------- 8. 通用卡片 ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s;
}
.card.hoverable:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: #d4dfef; }

.icon-tile {
  width: 48px; height: 48px; border-radius: 12px;
  display: grid; place-items: center; margin-bottom: 18px;
  background: var(--brand-soft); color: var(--brand);
}
.icon-tile svg { width: 23px; height: 23px; }
.card h3 { margin-bottom: 8px; }
.card .card-text { font-size: .92rem; color: var(--text-500); }

.card-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .9rem; font-weight: 600; color: var(--brand);
  margin-top: 16px;
}
.card-link svg { width: 15px; height: 15px; transition: transform .2s; }
.card-link:hover svg { transform: translateX(4px); }

/* 产品色辅助 */
.t-fate .icon-tile { background: var(--c-fate-soft); color: var(--c-fate); }
.t-hanzi .icon-tile { background: var(--c-hanzi-soft); color: var(--c-hanzi); }
.t-sprite .icon-tile { background: var(--c-sprite-soft); color: var(--c-sprite); }
.t-pd .icon-tile { background: var(--c-pd-soft); color: var(--c-pd); }
.t-yunce .icon-tile { background: var(--c-yunce-soft); color: var(--c-yunce); }
.t-mao .icon-tile { background: var(--c-mao-soft); color: var(--c-mao); }
.t-fate .card-link { color: var(--c-fate); }
.t-hanzi .card-link { color: var(--c-hanzi); }
.t-sprite .card-link { color: var(--c-sprite); }
.t-pd .card-link { color: var(--c-pd); }
.t-yunce .card-link { color: var(--c-yunce); }
.t-mao .card-link { color: var(--c-mao); }

/* ---------- 9. 产品大卡（产品中心页） ---------- */
.product-row {
  display: grid; gap: 28px; align-items: center;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 20px; padding: 28px;
  transition: transform .22s, box-shadow .22s, border-color .22s;
}
.product-row:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: #d4dfef; }
@media (min-width: 1024px) {
  .product-row { grid-template-columns: 1.05fr .95fr; padding: 40px; }
  .product-row.flip .pr-visual { order: -1; }
}
.pr-cat {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .78rem; font-weight: 600; letter-spacing: .04em;
  padding: 5px 12px; border-radius: 999px; margin-bottom: 14px;
}
.pr-body h3 { font-size: 1.45rem; margin-bottom: 4px; }
.pr-slogan { font-size: .95rem; color: var(--text-500); font-weight: 500; margin-bottom: 14px; }
.pr-desc { font-size: .93rem; }
.pr-feats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 18px; margin: 18px 0 20px; }
.pr-feats li { display: flex; gap: 8px; align-items: flex-start; font-size: .86rem; color: var(--text-600); line-height: 1.5; }
.pr-feats svg { flex: none; width: 15px; height: 15px; margin-top: 4px; }
.pr-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.pr-visual { min-height: 260px; display: grid; place-items: center; padding: 8px 0; }

/* 每行配色 */
.pr-fate .pr-cat { background: var(--c-fate-soft); color: var(--c-fate); }
.pr-fate .pr-feats svg { color: var(--c-fate); }
.pr-hanzi .pr-cat { background: var(--c-hanzi-soft); color: var(--c-hanzi); }
.pr-hanzi .pr-feats svg { color: var(--c-hanzi); }
.pr-sprite .pr-cat { background: var(--c-sprite-soft); color: var(--c-sprite); }
.pr-sprite .pr-feats svg { color: var(--c-sprite); }
.pr-pd .pr-cat { background: var(--c-pd-soft); color: var(--c-pd); }
.pr-pd .pr-feats svg { color: var(--c-pd); }
.pr-yunce .pr-cat { background: var(--c-yunce-soft); color: var(--c-yunce); }
.pr-yunce .pr-feats svg { color: var(--c-yunce); }
.pr-mao .pr-cat { background: var(--c-mao-soft); color: var(--c-mao); }
.pr-mao .pr-feats svg { color: var(--c-mao); }

/* 筛选 */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 44px; }
.filter-btn {
  display: inline-flex; align-items: center; min-height: 40px;
  padding: 8px 18px; border-radius: 999px; cursor: pointer;
  font: inherit; font-size: .88rem; font-weight: 500;
  color: var(--text-600); background: #fff; border: 1px solid var(--line);
  transition: all .18s;
}
.filter-btn:hover { border-color: var(--brand); color: var(--brand); }
.filter-btn.is-active { background: var(--ink-900); border-color: var(--ink-900); color: #fff; }
.product-row.is-hidden { display: none; }

/* ---------- 10. CSS 视觉稿 ---------- */
/* 手机框 */
.mockup-phone {
  width: 250px; border-radius: 36px;
  background: #0d1c33; padding: 9px;
  box-shadow: 0 24px 60px rgba(8, 18, 38, .35), inset 0 0 0 2px rgba(255, 255, 255, .08);
}
.mp-screen {
  border-radius: 28px; overflow: hidden; background: #fff;
  min-height: 490px; position: relative;
  display: flex; flex-direction: column;
}
.mp-notch {
  width: 92px; height: 22px; margin: 8px auto 2px;
  background: #0d1c33; border-radius: 999px; flex: none;
}
.mp-status { display: flex; justify-content: space-between; font-size: 9px; color: #94a3b8; padding: 4px 18px 0; }
.mp-appbar { display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; color: #0f1f38; padding: 10px 0 6px; }

/* 小猫听听播放器 */
.mp-mao { background: linear-gradient(165deg, #fdf2f8, #fff 45%); flex: 1; padding: 10px 16px 16px; display: flex; flex-direction: column; }
.mp-mao .mp-disc {
  width: 128px; height: 128px; margin: 14px auto 6px; border-radius: 50%;
  background: linear-gradient(135deg, #f472b6, #db2777);
  box-shadow: 0 12px 26px rgba(219, 39, 119, .35), inset 0 0 0 6px rgba(255,255,255,.25);
  position: relative;
}
.mp-mao .mp-disc::before {
  content: ""; position: absolute; inset: 38px; border-radius: 50%;
  background: #fff; opacity: .9;
}
.mp-mao .mp-disc::after {
  content: ""; position: absolute; left: 50%; top: 50%; width: 8px; height: 8px;
  margin: -4px; border-radius: 50%; background: #db2777;
}
.mp-mao .mp-title { text-align: center; font-size: 12px; font-weight: 700; color: #0f1f38; margin-top: 12px; }
.mp-mao .mp-sub { text-align: center; font-size: 9px; color: #94a3b8; }
.mp-wave { display: flex; align-items: center; gap: 3px; justify-content: center; margin: 14px 0 10px; height: 22px; }
.mp-wave i { width: 3px; border-radius: 3px; background: #f9a8d4; animation: wave 1.2s ease-in-out infinite; }
.mp-wave i:nth-child(2n) { animation-delay: .25s; background: #ec4899; height: 70%; }
.mp-wave i:nth-child(3n) { animation-delay: .5s; height: 90%; }
.mp-wave i:nth-child(4n) { animation-delay: .75s; height: 55%; }
@keyframes wave { 0%, 100% { transform: scaleY(.45); } 50% { transform: scaleY(1); } }
.mp-mao .mp-bar { height: 3px; border-radius: 3px; background: #fbcfe8; margin: 4px 18px; position: relative; }
.mp-mao .mp-bar::after { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 46%; background: #db2777; border-radius: 3px; }
.mp-controls { display: flex; align-items: center; justify-content: center; gap: 20px; margin: 12px 0; color: #9f1744; }
.mp-controls i { width: 12px; height: 12px; border-radius: 50%; background: currentColor; opacity: .35; }
.mp-controls .mp-play {
  width: 44px; height: 44px; border-radius: 50%; background: #db2777; position: relative;
  box-shadow: 0 8px 18px rgba(219, 39, 119, .35); opacity: 1;
}
.mp-controls .mp-play::before {
  content: ""; position: absolute; left: 17px; top: 14px;
  border-left: 12px solid #fff; border-top: 8px solid transparent; border-bottom: 8px solid transparent;
}
.mp-stat {
  margin-top: auto; background: #fff; border: 1px solid #fbcfe8; border-radius: 12px;
  padding: 8px 12px; font-size: 9px; color: #9d174d; display: flex; justify-content: space-between;
}
.mp-stat b { font-size: 10px; }

/* 命运解码 */
.mp-fate { background: linear-gradient(170deg, #f5f0ff, #fff 50%); flex: 1; padding: 8px 14px 14px; display: flex; flex-direction: column; gap: 9px; }
.mp-pillars { display: grid; grid-template-columns: repeat(4, 1fr); gap: 7px; }
.mp-pill {
  background: #fff; border: 1px solid #e9e0fb; border-radius: 10px;
  text-align: center; padding: 8px 0 6px;
}
.mp-pill b { display: block; font-size: 13px; color: #6d28d9; font-weight: 700; }
.mp-pill span { display: block; font-size: 9px; color: #a78bfa; margin-top: 2px; }
.mp-card { background: #fff; border: 1px solid #eee9fb; border-radius: 12px; padding: 10px 12px; }
.mp-card .mp-h { font-size: 10px; font-weight: 700; color: #0f1f38; margin-bottom: 7px; display: flex; justify-content: space-between; }
.mp-card .mp-h em { font-style: normal; color: #8b5cf6; font-size: 9px; }
.mp-bar-row { display: flex; align-items: center; gap: 8px; margin-bottom: 5px; font-size: 9px; color: #64748b; }
.mp-bar-row i { flex: none; width: 14px; font-style: normal; }
.mp-bar-row .tr { flex: 1; height: 5px; background: #f1eafd; border-radius: 5px; overflow: hidden; }
.mp-bar-row .tr::after { content: ""; display: block; height: 100%; background: linear-gradient(90deg, #a78bfa, #7c3aed); border-radius: 5px; width: var(--w, 100%); }
.mp-lines { display: grid; gap: 6px; }
.mp-lines i { height: 6px; border-radius: 4px; background: #ede9fe; }
.mp-lines i:nth-child(2) { width: 88%; }
.mp-lines i:nth-child(3) { width: 64%; background: #ddd3fc; }

/* PD租房 */
.mp-pd { background: #f4f8ff; flex: 1; padding: 8px 14px 14px; display: flex; flex-direction: column; gap: 9px; }
.mp-search {
  display: flex; align-items: center; gap: 8px; background: #fff;
  border: 1px solid #dbe6f8; border-radius: 10px; padding: 9px 12px; font-size: 9px; color: #94a3b8;
}
.mp-search::before { content: ""; width: 10px; height: 10px; border: 2px solid #94a3b8; border-radius: 50%; box-sizing: border-box; }
.mp-list-item {
  display: flex; gap: 10px; background: #fff; border: 1px solid #e3ecfa;
  border-radius: 12px; padding: 10px 12px; align-items: center;
}
.mp-house { flex: none; width: 34px; height: 34px; border-radius: 9px; background: #eaf1fe; display: grid; place-items: center; }
.mp-house svg { width: 17px; height: 17px; color: #2563eb; }
.mp-list-item b { display: block; font-size: 10px; color: #0f1f38; font-weight: 700; }
.mp-list-item span { display: block; font-size: 8.5px; color: #94a3b8; }
.mp-list-item .mp-go { margin-left: auto; color: #93b4f7; font-size: 12px; }
.mp-tagline { display: flex; gap: 6px; }
.mp-tagline i { font-style: normal; font-size: 8px; color: #2563eb; background: #eaf1fe; padding: 3px 8px; border-radius: 999px; }
.mp-notice { margin-top: auto; background: #e8f0fe; border-radius: 10px; padding: 8px 10px; font-size: 8.5px; color: #1e51c9; line-height: 1.5; }

/* 云策 */
.mp-yunce { background: #f0fafd; flex: 1; padding: 8px 14px 14px; display: flex; flex-direction: column; gap: 10px; }
.mp-topic { background: #fff; border: 1px solid #d8eef6; border-radius: 12px; padding: 11px 12px; }
.mp-topic b { display: block; font-size: 10.5px; color: #0f1f38; font-weight: 700; line-height: 1.5; }
.mp-topic span { font-size: 8.5px; color: #94a3b8; }
.mp-opt { background: #fff; border: 1px solid #d8eef6; border-radius: 10px; padding: 8px 10px; }
.mp-opt .mp-l { display: flex; justify-content: space-between; font-size: 9px; color: #33455f; margin-bottom: 6px; }
.mp-opt .mp-l em { font-style: normal; color: #0891b2; font-weight: 600; }
.mp-opt .tr { height: 5px; border-radius: 5px; background: #e2f2f8; overflow: hidden; }
.mp-opt .tr::after { content: ""; display: block; height: 100%; border-radius: 5px; width: 68%; background: linear-gradient(90deg, #22b8d4, #0891b2); }
.mp-opt.o2 .mp-l em { color: #94a3b8; }
.mp-opt.o2 .tr::after { background: #cbd5e1; width: 32%; }
.mp-done { margin-top: auto; display: flex; align-items: center; gap: 7px; font-size: 9px; color: #0e7c92; background: #e0f5fa; border-radius: 10px; padding: 8px 10px; }
.mp-done svg { width: 12px; height: 12px; }

/* AI 绘本 */
.mp-hanzi { background: linear-gradient(180deg, #fff7ec, #fdecd2 55%, #fff); flex: 1; padding: 10px 16px 16px; display: flex; flex-direction: column; overflow: hidden; }
.mp-scene { position: relative; height: 150px; border-radius: 14px; overflow: hidden; background: linear-gradient(180deg, #bfe3ff 0%, #e6f4ff 55%, #b7e4c7 55.5%, #95d5a8 100%); flex: none; }
.mp-scene .sun { position: absolute; right: 24px; top: 18px; width: 30px; height: 30px; border-radius: 50%; background: #fbbf24; box-shadow: 0 0 22px 6px rgba(251, 191, 36, .5); }
.mp-scene .cloud { position: absolute; background: #fff; border-radius: 999px; opacity: .9; }
.mp-scene .cloud::before, .mp-scene .cloud::after { content: ""; position: absolute; background: #fff; border-radius: 50%; }
.mp-scene .c1 { left: 18px; top: 24px; width: 34px; height: 11px; }
.mp-scene .c1::before { left: 8px; top: -7px; width: 16px; height: 16px; }
.mp-scene .c1::after { left: 16px; top: -4px; width: 12px; height: 12px; }
.mp-scene .c2 { left: 86px; top: 48px; width: 26px; height: 9px; opacity: .75; }
.mp-scene .c2::before { left: 6px; top: -6px; width: 13px; height: 13px; }
.mp-scene .c2::after { left: 12px; top: -3px; width: 10px; height: 10px; }
.mp-scene .mount { position: absolute; bottom: 45%; border-radius: 50% 50% 0 0 / 100% 100% 0 0; background: #74c69d; }
.mp-scene .m1 { left: -18px; width: 90px; height: 34px; }
.mp-scene .m2 { right: -24px; width: 110px; height: 44px; background: #52b788; }
.mp-hanzi .mp-story { margin-top: 12px; display: grid; gap: 7px; }
.mp-hanzi .mp-story i { height: 7px; border-radius: 4px; background: #fde8c8; }
.mp-hanzi .mp-story i:nth-child(2) { width: 90%; }
.mp-hanzi .mp-story i:nth-child(3) { width: 72%; background: #fbe0b3; }
.mp-voice {
  margin-top: auto; display: flex; align-items: center; gap: 10px;
  background: #fff; border: 1px solid #fbe0b3; border-radius: 12px; padding: 9px 12px;
}
.mp-voice .mp-vbtn { flex: none; width: 30px; height: 30px; border-radius: 50%; background: #d97706; position: relative; }
.mp-voice .mp-vbtn::before {
  content: ""; position: absolute; left: 12px; top: 10px;
  border-left: 9px solid #fff; border-top: 6px solid transparent; border-bottom: 6px solid transparent;
}
.mp-voice .mp-vw { flex: 1; display: flex; gap: 3px; align-items: center; height: 18px; }
.mp-voice .mp-vw i { width: 3px; border-radius: 3px; background: #f5c07a; height: 60%; }
.mp-voice .mp-vw i:nth-child(3n) { height: 100%; background: #d97706; }
.mp-voice .mp-vw i:nth-child(4n) { height: 40%; }
.mp-voice span { font-size: 8.5px; color: #b45309; }

/* 浏览器框 */
.mockup-browser {
  width: min(480px, 100%);
  border-radius: 16px; background: #fff; overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
}
.mb-bar { display: flex; align-items: center; gap: 8px; padding: 11px 14px; background: #f1f4f9; border-bottom: 1px solid var(--line); }
.mb-bar i { width: 9px; height: 9px; border-radius: 50%; background: #cbd5e1; }
.mb-bar i:nth-child(1) { background: #f87171; }
.mb-bar i:nth-child(2) { background: #fbbf24; }
.mb-bar i:nth-child(3) { background: #34d399; }
.mb-url { flex: 1; margin-left: 8px; background: #fff; border: 1px solid var(--line); border-radius: 999px; font-size: 10px; color: var(--text-500); padding: 5px 14px; display: flex; align-items: center; gap: 6px; }
.mb-url svg { width: 10px; height: 10px; color: #059669; }
.mb-body { padding: 18px; }

/* Sprite Cut 界面 */
.mb-sprite .mb-body { background: #f6faf8; }
.mb-tools { display: flex; gap: 8px; align-items: center; margin-bottom: 14px; }
.mb-tools .btn-mini {
  font-size: 9px; font-weight: 600; color: #fff; background: #059669;
  padding: 5px 12px; border-radius: 999px;
}
.mb-tools span { font-size: 9px; color: #64748b; margin-left: auto; }
.mb-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 7px; }
.mb-grid i {
  aspect-ratio: 1; border-radius: 6px;
  background: linear-gradient(135deg, #a7f3d0, #6ee7b7);
  border: 1.5px dashed transparent;
}
.mb-grid i.sel { border-color: #059669; background: linear-gradient(135deg, #6ee7b7, #10b981); box-shadow: 0 3px 10px rgba(5, 150, 105, .3); }
.mb-grid i:nth-child(3n) { background: linear-gradient(135deg, #bae6fd, #7dd3fc); }
.mb-grid i:nth-child(3n).sel { border-color: #0284c7; background: linear-gradient(135deg, #7dd3fc, #38bdf8); box-shadow: 0 3px 10px rgba(2, 132, 199, .3); }
.mb-grid i:nth-child(5n) { background: linear-gradient(135deg, #fde68a, #fcd34d); }
.mb-grid i:nth-child(5n).sel { border-color: #d97706; background: linear-gradient(135deg, #fcd34d, #fbbf24); box-shadow: 0 3px 10px rgba(217, 119, 6, .3); }
.mb-foot { display: flex; align-items: center; gap: 8px; margin-top: 14px; font-size: 9.5px; color: #059669; }
.mb-foot svg { width: 12px; height: 12px; }

/* BI 看板 */
.mb-bi .mb-body { background: #f7f9fc; display: grid; gap: 10px; }
.mb-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.mb-kpi { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.mb-kpi span { font-size: 8.5px; color: #94a3b8; }
.mb-kpi b { display: block; font-size: 15px; color: #0f1f38; margin-top: 2px; }
.mb-kpi b em { font-style: normal; font-size: 8.5px; color: #059669; }
.mb-chart { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
.mb-chart .mb-h { font-size: 9px; font-weight: 600; color: #33455f; margin-bottom: 10px; }
.mb-bars { display: flex; align-items: flex-end; gap: 7px; height: 64px; }
.mb-bars i { flex: 1; border-radius: 4px 4px 0 0; background: linear-gradient(180deg, #60a5fa, #2563eb); }
.mb-bars i:nth-child(2n) { background: linear-gradient(180deg, #a5b4fc, #6366f1); }
.mb-spark { display: flex; align-items: flex-end; gap: 4px; height: 34px; margin-top: 10px; }
.mb-spark i { flex: 1; border-radius: 3px; background: #c7d6f5; }
.mb-spark i.hi { background: #2563eb; }

/* ---------- 11. 页面 Hero（子页） ---------- */
.page-hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(700px 300px at 88% -30%, rgba(37, 99, 235, .1), transparent 60%),
    linear-gradient(180deg, var(--brand-softer), var(--bg) 90%);
  border-bottom: 1px solid var(--line-soft);
  padding: 56px 0 60px;
}
.breadcrumb { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: .84rem; color: var(--text-500); margin-bottom: 20px; }
.breadcrumb a { color: var(--text-500); }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb li:not(:last-child)::after { content: "/"; margin-left: 6px; color: #b6c2d4; }
.breadcrumb [aria-current] { color: var(--text-900); font-weight: 600; }
.page-hero h1 { margin-bottom: 14px; }
.page-hero .lead { max-width: 660px; }
.page-hero-grid { display: grid; gap: 44px; align-items: center; }
@media (min-width: 1024px) { .page-hero-grid { grid-template-columns: 1.1fr .9fr; } }

/* 产品页 hero 的色带 */
.ph-fate { background: radial-gradient(700px 320px at 88% -30%, rgba(124, 58, 237, .12), transparent 60%), linear-gradient(180deg, #faf7ff, var(--bg) 90%); }
.ph-hanzi { background: radial-gradient(700px 320px at 88% -30%, rgba(217, 119, 6, .12), transparent 60%), linear-gradient(180deg, #fffaf2, var(--bg) 90%); }
.ph-sprite { background: radial-gradient(700px 320px at 88% -30%, rgba(5, 150, 105, .12), transparent 60%), linear-gradient(180deg, #f4fbf8, var(--bg) 90%); }
.ph-pd { background: radial-gradient(700px 320px at 88% -30%, rgba(37, 99, 235, .12), transparent 60%), linear-gradient(180deg, #f5f9ff, var(--bg) 90%); }
.ph-yunce { background: radial-gradient(700px 320px at 88% -30%, rgba(8, 145, 178, .12), transparent 60%), linear-gradient(180deg, #f2fafc, var(--bg) 90%); }
.ph-mao { background: radial-gradient(700px 320px at 88% -30%, rgba(219, 39, 119, .12), transparent 60%), linear-gradient(180deg, #fdf5f9, var(--bg) 90%); }

/* ---------- 12. 优势 / 服务 / 案例 ---------- */
.adv-item { display: flex; gap: 18px; }
.adv-item .icon-tile { flex: none; margin: 0; width: 52px; height: 52px; }
.section-dark .adv-item .icon-tile { background: rgba(255, 255, 255, .1); color: #93b4f5; }
.adv-item h3 { font-size: 1.05rem; margin-bottom: 6px; }
.adv-item p { font-size: .9rem; }

.case-media {
  border-radius: 12px; overflow: hidden; border: 1px solid var(--line);
  background: #eef3fa; margin-bottom: 20px;
  aspect-ratio: 16 / 10; display: grid; place-items: center;
}
.case-media img { width: 100%; height: 100%; object-fit: cover; }
.case-tag { font-size: .78rem; font-weight: 600; color: var(--brand); margin-bottom: 10px; }

/* 流程步骤 */
.steps { display: grid; gap: 14px; counter-reset: step; }
@media (min-width: 768px) { .steps { grid-template-columns: repeat(5, 1fr); gap: 10px; } }
.step { position: relative; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 22px 18px; }
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  display: inline-flex; width: 34px; height: 34px; border-radius: 10px;
  align-items: center; justify-content: center;
  background: var(--ink-900); color: #fff;
  font-size: .8rem; font-weight: 700; margin-bottom: 14px;
}
.step h3 { font-size: .98rem; margin-bottom: 4px; }
.step p { font-size: .82rem; color: var(--text-500); line-height: 1.6; }
.step::after {
  content: ""; position: absolute; right: -9px; top: 36px; z-index: 2;
  border: 7px solid transparent; border-left-color: #c9d5e5;
}
.step:last-child::after { display: none; }
@media (max-width: 767px) {
  .step::after { display: none; }
}

/* 时间线 */
.timeline { position: relative; max-width: 760px; margin: 0 auto; padding-left: 30px; }
.timeline::before {
  content: ""; position: absolute; left: 8px; top: 8px; bottom: 8px;
  width: 2px; background: linear-gradient(180deg, var(--brand), #c7d6f5);
  border-radius: 2px;
}
.tl-item { position: relative; padding: 0 0 36px 22px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -30px; top: 6px;
  width: 14px; height: 14px; border-radius: 50%;
  background: #fff; border: 3px solid var(--brand);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
}
.tl-year { display: inline-block; font-size: .8rem; font-weight: 700; color: var(--brand); background: var(--brand-soft); border-radius: 999px; padding: 3px 12px; margin-bottom: 10px; }
.tl-item h3 { font-size: 1.08rem; margin-bottom: 6px; }
.tl-item p { font-size: .92rem; }

/* ---------- 13. FAQ ---------- */
.faq { max-width: 780px; margin: 0 auto; }
.faq-item { border: 1px solid var(--line); border-radius: 14px; background: #fff; margin-bottom: 12px; overflow: hidden; }
.faq-item summary {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px 22px; cursor: pointer; list-style: none;
  font-weight: 600; color: var(--text-900); font-size: .98rem;
  min-height: 48px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary svg { flex: none; width: 18px; height: 18px; color: var(--text-500); transition: transform .25s; }
.faq-item[open] summary svg { transform: rotate(45deg); color: var(--brand); }
.faq-item .faq-body { padding: 0 22px 20px; font-size: .92rem; color: var(--text-500); }

/* ---------- 14. CTA 横幅 ---------- */
.cta-band {
  background:
    radial-gradient(640px 300px at 12% -20%, rgba(124, 58, 237, .4), transparent 60%),
    radial-gradient(640px 320px at 92% 130%, rgba(37, 99, 235, .5), transparent 60%),
    var(--ink-900);
  border-radius: 24px; color: rgba(255, 255, 255, .8);
  padding: 56px 32px; text-align: center;
  position: relative; overflow: hidden;
}
.cta-band h2 { color: #fff; }
.cta-band p { max-width: 560px; margin: 0 auto 28px; }
.cta-band .btn-row { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.cta-band .btn-primary { background: #fff; color: var(--ink-900); box-shadow: 0 8px 22px rgba(2, 10, 26, .4); }
.cta-band .btn-primary:hover { background: #eef3fb; }

/* ---------- 15. 联系页 ---------- */
/* 产品详情布局 */
.detail-grid { display: grid; gap: 48px; align-items: start; }
@media (min-width: 1024px) { .detail-grid { grid-template-columns: 1.25fr .75fr; } }
.info-card { position: static; }
@media (min-width: 1024px) { .info-card { position: sticky; top: calc(var(--header-h) + 24px); } }
.info-card h3 { font-size: 1.05rem; }
.info-card dl { margin: 10px 0 18px; }
.info-row { display: flex; justify-content: space-between; gap: 16px; padding: 11px 0; border-bottom: 1px dashed var(--line); font-size: .9rem; }
.info-row:last-of-type { border-bottom: 0; }
.info-row dt { color: var(--text-500); flex: none; }
.info-row dd { margin: 0; color: var(--text-900); font-weight: 500; text-align: right; }

.contact-grid { display: grid; gap: 40px; }
@media (min-width: 1024px) { .contact-grid { grid-template-columns: 1fr 1.15fr; } }
.contact-card { display: flex; gap: 16px; align-items: flex-start; }
.contact-card .icon-tile { flex: none; margin: 0; }
.contact-card h3 { font-size: 1rem; margin-bottom: 2px; }
.contact-card p, .contact-card a { font-size: .92rem; }
.qr-panel {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 28px; text-align: center;
}
.qr-panel img {
  width: 180px; height: auto; margin: 0 auto 14px;
  border-radius: 12px; border: 1px solid var(--line-soft);
}
.qr-panel b { display: block; color: var(--text-900); margin-bottom: 4px; }
.qr-panel span { font-size: .85rem; color: var(--text-500); }

.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow-sm); }
.form-grid { display: grid; gap: 18px; }
@media (min-width: 640px) { .form-grid { grid-template-columns: 1fr 1fr; } .form-grid .full { grid-column: 1 / -1; } }
.field label { display: block; font-size: .88rem; font-weight: 600; color: var(--text-900); margin-bottom: 7px; }
.field input, .field select, .field textarea {
  width: 100%; min-height: 46px; padding: 11px 14px;
  font: inherit; font-size: .95rem; color: var(--text-900);
  background: #fff; border: 1px solid #cdd8e6; border-radius: 10px;
  transition: border-color .18s, box-shadow .18s;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .15);
}
.form-note { font-size: .82rem; color: var(--text-500); }
.form-status { font-size: .9rem; font-weight: 600; }
.form-status.ok { color: #059669; }
.form-status.err { color: #dc2626; }

/* ---------- 16. 页脚 ---------- */
.site-footer {
  background: var(--ink-900); color: rgba(255, 255, 255, .66);
  padding: 64px 0 0; font-size: .9rem;
}
.footer-grid { display: grid; gap: 40px; padding-bottom: 48px; }
@media (min-width: 768px) { .footer-grid { grid-template-columns: 1.3fr .8fr .8fr 1.1fr; } }
.site-footer h4 { color: #fff; font-size: .95rem; margin-bottom: 18px; }
.footer-brand { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand img { width: 30px; height: 30px; filter: brightness(0) invert(1); }
.footer-brand b { color: #fff; font-size: 1.05rem; letter-spacing: .02em; }
.footer-brand span { color: rgba(255, 255, 255, .5); font-size: .8rem; margin-left: 2px; }
.footer-slogan { font-size: .88rem; line-height: 1.8; max-width: 300px; }
.footer-list li { margin-bottom: 4px; }
.footer-list a {
  display: inline-flex; align-items: center; gap: 8px;
  color: rgba(255, 255, 255, .66); padding: 6px 0; font-size: .88rem;
}
.footer-list a:hover { color: #fff; }
.footer-list a::before { content: ""; width: 4px; height: 4px; border-radius: 50%; background: rgba(255, 255, 255, .3); transition: background .2s; }
.footer-list a:hover::before { background: #6d9bf8; }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 12px; font-size: .88rem; line-height: 1.6; }
.footer-contact svg { flex: none; width: 15px; height: 15px; margin-top: 5px; color: #6d9bf8; }
.footer-qr { display: flex; gap: 14px; align-items: center; margin-top: 18px; }
.footer-qr img { width: 88px; height: auto; background: #fff; padding: 6px; border-radius: 10px; }
.footer-qr span { font-size: .8rem; line-height: 1.6; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding: 22px 0 26px; }
.footer-bottom .container { display: flex; flex-wrap: wrap; gap: 10px 28px; align-items: center; justify-content: center; text-align: center; font-size: .8rem; color: rgba(255, 255, 255, .5); }
.footer-bottom a { color: rgba(255, 255, 255, .6); }
.footer-bottom a:hover { color: #fff; }

/* 回到顶部 */
.to-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 90;
  width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--line);
  background: #fff; color: var(--text-700); cursor: pointer;
  display: grid; place-items: center; box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: all .25s;
}
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { color: var(--brand); border-color: var(--brand); }
.to-top svg { width: 18px; height: 18px; }

/* ---------- 17. 动效 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
.reveal.in { opacity: 1; transform: none; }
.d1 { transition-delay: .08s; } .d2 { transition-delay: .16s; } .d3 { transition-delay: .24s; } .d4 { transition-delay: .32s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 18. 其他 ---------- */
.text-center { text-align: center; }
.mt-24 { margin-top: 24px; } .mt-40 { margin-top: 40px; } .mt-56 { margin-top: 56px; }
.note {
  font-size: .85rem; color: var(--text-500);
  background: var(--line-soft); border-left: 3px solid #b6c2d4;
  border-radius: 0 10px 10px 0; padding: 12px 16px;
}
.note b { color: var(--text-700); }

.check-list li { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 12px; }
.check-list svg { flex: none; width: 17px; height: 17px; color: #059669; margin-top: 5px; }
.check-list b { color: var(--text-900); }

.screenshot-frame {
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-md); background: #fff;
}
.screenshot-frame img { width: 100%; height: auto; }
.screenshot-frame figcaption {
  font-size: .84rem; color: var(--text-500); padding: 14px 20px;
  background: #fff; border-top: 1px solid var(--line-soft);
}