/* =========================================================
   企业官网 · 科技蓝主题
   单一 CSS 文件，无构建依赖。
   目录：
   01 设计令牌 (Design Tokens)
   02 基础重置与排版
   03 通用组件（容器 / 按钮 / 标题 / 卡片 / 标签）
   04 页头与导航
   05 首页 Hero 与版块
   06 内页 Hero
   07 流程 / 时间线 / 筛选 / 表单 / 页脚
   08 响应式断点
   09 无障碍与动效降级
   ========================================================= */

/* ---------- 01 设计令牌 ---------- */
:root {
  /* 品牌色：科技蓝 */
  --brand: #1e5eff;
  --brand-600: #1648cf;
  --brand-700: #10389f;
  --brand-050: #eaf1ff;
  --brand-100: #d6e3ff;

  /* 中性色 */
  --ink: #0b1524;
  --ink-2: #3f4f68;
  --ink-3: #6b7a92;
  --line: #e3e9f2;
  --line-strong: #cfd8e6;
  --bg: #ffffff;
  --bg-soft: #f5f8fd;

  /* 深色区（Hero / 页脚） */
  --dark: #071228;
  --dark-2: #0d2145;
  --dark-line: rgba(255, 255, 255, 0.12);
  --dark-text: #eaf0fb;
  --dark-text-2: #a9b8d4;

  /* 业务分色（用于标签、图标底、筛选态） */
  --c-game: #7c4dff;
  --c-game-bg: #f1ecff;
  --c-gov: #1e5eff;
  --c-gov-bg: #eaf1ff;
  --c-edu: #0aa37f;
  --c-edu-bg: #e3f7f1;

  /* 圆角 / 阴影 / 尺寸 */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-full: 999px;
  --shadow-sm: 0 1px 2px rgba(11, 21, 36, 0.05), 0 2px 8px rgba(11, 21, 36, 0.04);
  --shadow-md: 0 6px 24px rgba(11, 21, 36, 0.08);
  --shadow-lg: 0 20px 48px rgba(11, 21, 36, 0.12);
  --shadow-brand: 0 10px 30px rgba(30, 94, 255, 0.28);

  --wrap: 1200px;
  --gutter: 24px;
  --header-h: 72px;

  /* 排版 */
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC",
    system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  /* 藏文字体栈：按 macOS / Windows / Android / 自托管顺序回退 */
  --font-bo: "Noto Serif Tibetan", "Kailasa", "Microsoft Himalaya",
    "Jomolhari", "Noto Sans Tibetan", "Tibetan Machine Uni", "PingFang SC",
    "Microsoft YaHei", sans-serif;

  /* 动效 */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 0.28s;
}

/* ---------- 02 基础重置与排版 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(30px, 4.6vw, 52px);
}
h2 {
  font-size: clamp(24px, 3vw, 36px);
}
h3 {
  font-size: clamp(18px, 1.6vw, 21px);
}

p {
  margin: 0;
}

a {
  color: var(--brand);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}
a:hover {
  color: var(--brand-600);
}

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

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

button {
  font: inherit;
  cursor: pointer;
}

/* 键盘焦点统一可见，鼠标点击不出现描边 */
:focus-visible {
  outline: 3px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 深色区内的焦点色 */
.dark :focus-visible,
.site-footer :focus-visible {
  outline-color: #7fa8ff;
}

/* ---------- 03 通用组件 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding: clamp(56px, 7vw, 104px) 0;
}
.section--soft {
  background: var(--bg-soft);
}
.section--tight {
  padding: clamp(40px, 4.5vw, 64px) 0;
}

/* 版块标题 */
.sec-head {
  max-width: 760px;
  margin-bottom: clamp(32px, 4vw, 56px);
}
.sec-head--center {
  margin-inline: auto;
  text-align: center;
}
.sec-head h2 {
  margin-bottom: 14px;
}
.sec-head p {
  font-size: 17px;
  color: var(--ink-2);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand);
  background: var(--brand-050);
  border-radius: var(--r-full);
  padding: 6px 14px;
  margin-bottom: 16px;
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
}
.dark .eyebrow {
  color: #9dc0ff;
  background: rgba(30, 94, 255, 0.18);
}
.dark .eyebrow::before {
  background: #7fa8ff;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--r-full);
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}
.btn:hover {
  transform: translateY(-2px);
}
.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: linear-gradient(135deg, var(--brand) 0%, #4b7dff 100%);
  color: #fff;
  box-shadow: var(--shadow-brand);
}
.btn--primary:hover {
  color: #fff;
  box-shadow: 0 14px 34px rgba(30, 94, 255, 0.36);
}

.btn--ghost {
  background: #fff;
  color: var(--ink);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-sm);
}
.btn--ghost:hover {
  color: var(--brand);
  border-color: var(--brand);
}

.btn--onDark {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.24);
  backdrop-filter: blur(6px);
}
.btn--onDark:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.42);
}

.btn--lg {
  padding: 16px 32px;
  font-size: 16px;
}
.btn--block {
  width: 100%;
}

.arrow {
  transition: transform var(--dur) var(--ease);
}
.btn:hover .arrow {
  transform: translateX(4px);
}

/* 卡片 */
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
  height: 100%;
}
.card--hover:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-100);
}
.card h3 {
  margin-bottom: 10px;
}
.card p {
  font-size: 15px;
}

/* 图标底 */
.icon-badge {
  width: 52px;
  height: 52px;
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  background: var(--brand-050);
  color: var(--brand);
}
.icon-badge svg {
  width: 26px;
  height: 26px;
}
.icon-badge--game {
  background: var(--c-game-bg);
  color: var(--c-game);
}
.icon-badge--gov {
  background: var(--c-gov-bg);
  color: var(--c-gov);
}
.icon-badge--edu {
  background: var(--c-edu-bg);
  color: var(--c-edu);
}

/* 标签 */
.tag {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 600;
  padding: 4px 11px;
  border-radius: var(--r-full);
  background: var(--bg-soft);
  color: var(--ink-2);
  border: 1px solid var(--line);
  white-space: nowrap;
}
.tag--game {
  background: var(--c-game-bg);
  color: var(--c-game);
  border-color: transparent;
}
.tag--gov {
  background: var(--c-gov-bg);
  color: var(--c-gov);
  border-color: transparent;
}
.tag--edu {
  background: var(--c-edu-bg);
  color: var(--c-edu);
  border-color: transparent;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* 列表（带勾） */
.check-list {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}
.check-list li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 14px;
  height: 8px;
  border-left: 2px solid var(--brand);
  border-bottom: 2px solid var(--brand);
  transform: rotate(-45deg);
  transform-origin: left center;
}

/* 通用网格 */
.grid {
  display: grid;
  gap: 24px;
}
.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* 面包屑 */
.crumb {
  font-size: 13.5px;
  color: var(--dark-text-2);
  margin-bottom: 18px;
}
.crumb a {
  color: var(--dark-text-2);
}
.crumb a:hover {
  color: #fff;
}
.crumb span {
  margin-inline: 8px;
  opacity: 0.5;
}

/* 跳过导航（无障碍） */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  background: var(--brand);
  color: #fff;
  padding: 12px 20px;
  border-radius: 0 0 var(--r-sm) 0;
  font-weight: 600;
}
.skip-link:focus {
  left: 0;
  color: #fff;
}

/* ---------- 04 页头与导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    background var(--dur) var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 4px 20px rgba(11, 21, 36, 0.06);
  background: rgba(255, 255, 255, 0.95);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}
.brand:hover {
  color: var(--ink);
}
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: #fff;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  box-shadow: 0 6px 16px rgba(30, 94, 255, 0.28);
  flex-shrink: 0;
}
.brand-mark img {
  display: block;
  width: 30px;
  height: auto;
}
.brand-text small {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  line-height: 1.4;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav a {
  padding: 9px 14px;
  border-radius: var(--r-sm);
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
}
.nav a:hover {
  color: var(--brand);
  background: var(--brand-050);
}
.nav a[aria-current="page"] {
  color: var(--brand);
  font-weight: 600;
  background: var(--brand-050);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-tel {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}
.header-tel svg {
  width: 16px;
  height: 16px;
  color: var(--brand);
}
.header-tel:hover {
  color: var(--brand);
}

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: #fff;
  padding: 0;
  place-items: center;
}
.nav-toggle span {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--ink);
  transition: transform var(--dur) var(--ease);
}
.nav-toggle span::before {
  top: -6px;
}
.nav-toggle span::after {
  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);
}

/* 移动端抽屉 */
.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  z-index: 99;
  background: #fff;
  padding: 20px var(--gutter) 40px;
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
    visibility var(--dur);
  overflow-y: auto;
}
.mobile-nav.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.mobile-nav a {
  display: block;
  padding: 15px 4px;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}
.mobile-nav a[aria-current="page"] {
  color: var(--brand);
}
.mobile-nav .btn {
  margin-top: 24px;
}

/* ---------- 05 首页 Hero 与版块 ---------- */
.hero {
  position: relative;
  background: radial-gradient(120% 120% at 82% 8%, #16367a 0%, var(--dark) 46%, #050d1c 100%);
  color: var(--dark-text);
  padding: clamp(64px, 8vw, 116px) 0 clamp(72px, 9vw, 128px);
  overflow: hidden;
  min-height: min(720px, 92dvh);
  display: flex;
  align-items: center;
}
/* 网格纹理 */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(120, 160, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 160, 255, 0.08) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(90% 80% at 60% 20%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(90% 80% at 60% 20%, #000 0%, transparent 78%);
  pointer-events: none;
}
/* 光斑 */
.hero::after {
  content: "";
  position: absolute;
  width: 620px;
  height: 620px;
  right: -180px;
  top: -220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(30, 94, 255, 0.5) 0%, transparent 68%);
  filter: blur(20px);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
  width: 100%;
}

.hero h1 {
  color: #fff;
  margin-bottom: 20px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(100deg, #6f9bff 0%, #a9c4ff 60%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead {
  font-size: clamp(16px, 1.35vw, 18.5px);
  color: var(--dark-text-2);
  max-width: 560px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 40px;
}

/* Hero 内的数据条 */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  padding-top: 28px;
  border-top: 1px solid var(--dark-line);
  max-width: 560px;
}
.hero-stats dt,
.hero-stats .num {
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.hero-stats .num b {
  font-size: 0.55em;
  font-weight: 700;
  color: #7fa8ff;
  margin-left: 2px;
}
.hero-stats dd,
.hero-stats .lbl {
  margin: 6px 0 0;
  font-size: 13.5px;
  color: var(--dark-text-2);
}

/* Hero 右侧可视化卡（纯 CSS/SVG，无外链图片） */
.hero-visual {
  position: relative;
}
.visual-card {
  position: relative;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.11) 0%, rgba(255, 255, 255, 0.04) 100%);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--r-lg);
  padding: 22px;
  backdrop-filter: blur(14px);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.36);
}
.visual-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ff5f57;
}
.dot--y {
  background: #febc2e;
}
.dot--g {
  background: #28c840;
}
.visual-head span {
  margin-left: auto;
  font-size: 12px;
  font-family: var(--mono);
  color: var(--dark-text-2);
}

.visual-rows {
  display: grid;
  gap: 12px;
}
.vrow {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 14px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 14px;
  color: #fff;
}
.vrow .vicon {
  width: 32px;
  height: 32px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  font-size: 15px;
}
.vrow .vicon--game {
  background: rgba(124, 77, 255, 0.28);
}
.vrow .vicon--gov {
  background: rgba(30, 94, 255, 0.3);
}
.vrow .vicon--edu {
  background: rgba(10, 163, 127, 0.26);
}
.vrow small {
  display: block;
  color: var(--dark-text-2);
  font-size: 12.5px;
}
.vrow .vstate {
  margin-left: auto;
  font-size: 12px;
  font-family: var(--mono);
  color: #7fe3c0;
  white-space: nowrap;
}

/* 悬浮的浮层小卡 */
.float-badge {
  position: absolute;
  right: -14px;
  bottom: -22px;
  background: #fff;
  border-radius: var(--r-md);
  padding: 14px 18px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  gap: 12px;
}
.float-badge .fb-num {
  font-size: 22px;
  font-weight: 800;
  color: var(--brand);
  line-height: 1;
}
.float-badge .fb-lbl {
  font-size: 12.5px;
  color: var(--ink-2);
  line-height: 1.4;
}

/* 客户类型墙 */
.logo-wall {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}
.logo-wall div {
  background: #fff;
  min-height: 84px;
  display: grid;
  place-items: center;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink-3);
  letter-spacing: 0.02em;
  padding: 12px;
  text-align: center;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.logo-wall div:hover {
  color: var(--brand);
  background: var(--brand-050);
}
.wall-note {
  margin-top: 16px;
  text-align: center;
  font-size: 13.5px;
  color: var(--ink-3);
}

/* 业务大卡（首页三块） */
.biz-card {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.biz-card .tag-row {
  margin-bottom: 18px;
}
.biz-card h3 {
  font-size: 22px;
  margin-bottom: 12px;
}
.biz-card .check-list {
  margin-bottom: 24px;
}
.biz-card .card-foot {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 15px;
}
.text-link:hover .arrow {
  transform: translateX(4px);
}

/* 数据统计区 */
.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}
.stat-item .n {
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 800;
  color: var(--ink);
  line-height: 1;
  letter-spacing: -0.02em;
}
.stat-item .n b {
  font-size: 0.5em;
  color: var(--brand);
  margin-left: 3px;
}
.stat-item .t {
  margin-top: 8px;
  font-size: 14.5px;
  color: var(--ink-3);
}

/* 案例卡 */
.case-card {
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.case-cover {
  height: 168px;
  position: relative;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  overflow: hidden;
}
.case-cover--img {
  background-size: cover;
  background-position: center;
  background-color: #0d2145;
}
.case-cover--img span {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 4px 11px;
  border-radius: 999px;
  background: rgba(8, 20, 44, 0.68);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.case-cover--game {
  background: linear-gradient(135deg, #4b2bb5 0%, #7c4dff 100%);
}
.case-cover--gov {
  background: linear-gradient(135deg, #0d2145 0%, #2563eb 100%);
}
.case-cover--edu {
  background: linear-gradient(135deg, #08614f 0%, #0aa37f 100%);
}
.case-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.14) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.6;
}
.case-cover span {
  position: relative;
  z-index: 1;
  opacity: 0.92;
}
.case-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.case-body h3 {
  font-size: 18px;
}
.case-body p {
  font-size: 14.5px;
  flex: 1;
}
.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 4px;
}

/* 案例筛选 */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 36px;
}
.filters button {
  padding: 9px 20px;
  border-radius: var(--r-full);
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--ink-2);
  font-size: 14.5px;
  font-weight: 600;
  transition: all var(--dur) var(--ease);
}
.filters button:hover {
  border-color: var(--brand);
  color: var(--brand);
}
.filters button[aria-pressed="true"] {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
  box-shadow: var(--shadow-brand);
}
.is-hidden {
  display: none !important;
}

/* ---------- 06 内页 Hero ---------- */
.page-hero {
  position: relative;
  background: radial-gradient(110% 140% at 84% 0%, #16367a 0%, var(--dark) 52%, #050d1c 100%);
  color: var(--dark-text);
  padding: clamp(52px, 6vw, 84px) 0 clamp(52px, 6vw, 80px);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(120, 160, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 160, 255, 0.08) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(80% 100% at 70% 0%, #000 0%, transparent 76%);
  -webkit-mask-image: radial-gradient(80% 100% at 70% 0%, #000 0%, transparent 76%);
  pointer-events: none;
}
.page-hero .wrap {
  position: relative;
  z-index: 2;
}
.page-hero h1 {
  color: #fff;
  max-width: 860px;
  margin-bottom: 16px;
}
.page-hero p {
  max-width: 660px;
  font-size: 17px;
  color: var(--dark-text-2);
}

/* ---------- 07 流程 / 时间线 / 表单 / 页脚 ---------- */
/* 合作流程 */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
  counter-reset: step;
}
.step {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 26px 24px;
  box-shadow: var(--shadow-sm);
}
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--brand);
  margin-bottom: 12px;
}
.step h3 {
  font-size: 17px;
  margin-bottom: 8px;
}
.step p {
  font-size: 14.5px;
}
/* 连接线 */
.step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 40px;
  right: -14px;
  width: 14px;
  height: 1px;
  background: var(--line-strong);
}

/* 时间线 */
.timeline {
  position: relative;
  padding-left: 34px;
  display: grid;
  gap: 32px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--brand) 0%, var(--line) 100%);
}
.tl-item {
  position: relative;
}
.tl-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 7px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--brand);
}
.tl-year {
  font-size: 13.5px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--brand);
  margin-bottom: 6px;
}
.tl-item h3 {
  font-size: 18px;
  margin-bottom: 6px;
}
.tl-item p {
  font-size: 15px;
}

/* 业务详情块 */
.biz-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 60px);
  align-items: center;
}
.biz-block--rev .biz-media {
  order: -1;
}
.biz-media {
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: var(--bg-soft);
  padding: clamp(24px, 3vw, 36px);
  box-shadow: var(--shadow-sm);
}
.biz-media .tag-row {
  margin-bottom: 20px;
}
.mini-cards {
  display: grid;
  gap: 12px;
}
.mini-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 16px 18px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.mini-card .mc-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--brand-050);
  color: var(--brand);
  font-size: 15px;
  flex-shrink: 0;
}
.mini-card h4 {
  font-size: 15px;
  margin-bottom: 3px;
  color: var(--ink);
}
.mini-card p {
  font-size: 13.5px;
  color: var(--ink-3);
}

/* 属性表 */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}
.spec-table caption {
  text-align: left;
  font-weight: 700;
  color: var(--ink);
  padding: 0 0 12px;
}
.spec-table th,
.spec-table td {
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.spec-table th {
  width: 34%;
  color: var(--ink);
  font-weight: 600;
  background: var(--bg-soft);
}
.spec-table tr:last-child th,
.spec-table tr:last-child td {
  border-bottom: none;
}

/* 表单 */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.field--full {
  grid-column: 1 / -1;
}
.field label {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
}
.field .req {
  color: #d92d20;
}
.field input,
.field select,
.field textarea {
  font: inherit;
  font-size: 15px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  padding: 12px 14px;
  width: 100%;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.field textarea {
  resize: vertical;
  min-height: 132px;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(30, 94, 255, 0.14);
}
.field input[aria-invalid="true"],
.field select[aria-invalid="true"],
.field textarea[aria-invalid="true"] {
  border-color: #d92d20;
  box-shadow: 0 0 0 4px rgba(217, 45, 32, 0.12);
}
.field .err {
  font-size: 13px;
  color: #d92d20;
  min-height: 18px;
}
.field .hint {
  font-size: 13px;
  color: var(--ink-3);
}
.form-consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--ink-2);
}
.form-consent input {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  accent-color: var(--brand);
  flex-shrink: 0;
}
.form-status {
  border-radius: var(--r-md);
  padding: 14px 16px;
  font-size: 14.5px;
  font-weight: 600;
  background: var(--c-edu-bg);
  color: #06705a;
  border: 1px solid rgba(10, 163, 127, 0.28);
}
.form-status--error {
  background: #fdecea;
  color: #a81c12;
  border-color: rgba(217, 45, 32, 0.28);
}

/* 联系信息卡 */
.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-sm);
}
.contact-item .ci-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--brand-050);
  color: var(--brand);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.contact-item .ci-icon svg {
  width: 20px;
  height: 20px;
}
.contact-item dl {
  margin: 0;
}
.contact-item dt {
  font-size: 13px;
  color: var(--ink-3);
  margin-bottom: 4px;
}
.contact-item dd {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.5;
  word-break: break-word;
}
.contact-item dd a {
  color: inherit;
}
.contact-item dd a:hover {
  color: var(--brand);
}
.contact-item dd.dd-stack {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.contact-item dd.dd-stack small {
  font-weight: 400;
  margin-top: 4px;
}
.contact-item dd small {
  display: block;
  font-size: 13px;
  font-weight: 400;
  color: var(--ink-3);
  margin-top: 2px;
}

/* CTA 横幅 */
.cta-band {
  position: relative;
  overflow: hidden;
  background: radial-gradient(110% 160% at 20% 0%, #1c4396 0%, var(--dark) 58%, #050d1c 100%);
  border-radius: var(--r-lg);
  padding: clamp(36px, 5vw, 64px);
  color: #fff;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.cta-band::after {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  right: -120px;
  bottom: -220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(30, 94, 255, 0.45) 0%, transparent 70%);
  pointer-events: none;
}
.cta-band > * {
  position: relative;
  z-index: 1;
}
.cta-band h2 {
  color: #fff;
  margin-bottom: 10px;
}
.cta-band p {
  color: var(--dark-text-2);
  max-width: 560px;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* 技术底座（深色带 · 首页科技主线） */
.tech-core {
  position: relative;
  overflow: hidden;
  background: radial-gradient(120% 150% at 15% 0%, #16337a 0%, var(--dark) 56%, #050d1c 100%);
  color: #fff;
  padding: clamp(52px, 6vw, 84px) 0;
}
.tech-core::after {
  content: "";
  position: absolute;
  width: 460px;
  height: 460px;
  right: -140px;
  top: -220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(30, 94, 255, 0.42) 0%, transparent 70%);
  pointer-events: none;
}
.tech-core > .wrap {
  position: relative;
  z-index: 1;
}
.tech-core .sec-head h2 {
  color: #fff;
}
.tech-core .sec-head p {
  color: var(--dark-text-2);
}
.tech-core .eyebrow {
  color: #9dc0ff;
  background: rgba(255, 255, 255, 0.1);
}
.tech-core .eyebrow::before {
  background: #7ea9ff;
}
.tech-card {
  display: flex;
  flex-direction: column;
  padding: 26px 24px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.14);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}
.tech-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-3px);
}
.tech-card h3 {
  color: #fff;
}
.tech-card > p {
  color: var(--dark-text-2);
}
.tech-card .check-list li {
  color: rgba(233, 240, 251, 0.86);
}
.tech-card .check-list li::before {
  border-color: #7ea9ff;
}
.tech-card .tag {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  color: #dbe6ff;
}
.core-note {
  margin: 34px auto 0;
  max-width: 820px;
  text-align: center;
  font-size: 15px;
  line-height: 1.9;
  color: var(--dark-text-2);
}
.core-note strong {
  color: #fff;
}

/* 品牌口号（藏文 + 中文对照） */
.slogan-band {
  background: radial-gradient(120% 180% at 50% 0%, #f2f7ff 0%, var(--bg-soft) 58%, #edf4ff 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: clamp(28px, 3.6vw, 44px) 0;
}
.slogan-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}
.slogan-bo {
  margin: 0;
  font-family: var(--font-bo);
  font-size: clamp(23px, 2.7vw, 36px);
  line-height: 1.95;
  color: var(--ink);
  letter-spacing: 0.01em;
}
.slogan-zh {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: clamp(13px, 1.15vw, 14.5px);
  font-weight: 600;
  color: var(--brand);
  letter-spacing: 0.3em;
  text-indent: 0.3em;
}
.slogan-zh::before,
.slogan-zh::after {
  content: "";
  width: clamp(24px, 6vw, 56px);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand-100));
}
.slogan-zh::after {
  background: linear-gradient(90deg, var(--brand-100), transparent);
}
/* 关于页口号引用块 */
.slogan-quote {
  margin-top: 26px;
  padding: 22px 24px;
  border-left: 3px solid var(--brand);
  background: var(--brand-050);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}
.slogan-quote .bo {
  display: block;
  font-family: var(--font-bo);
  font-size: clamp(19px, 2vw, 24px);
  line-height: 1.95;
  color: var(--ink);
}
.slogan-quote .zh {
  display: block;
  margin-top: 8px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--brand-600);
  letter-spacing: 0.12em;
}
.slogan-quote .note {
  margin-top: 12px;
  font-size: 14.5px;
  color: var(--ink-2);
}

/* 页脚 */
.site-footer {
  background: var(--dark);
  color: var(--dark-text-2);
  padding: clamp(48px, 5vw, 72px) 0 0;
  font-size: 14.5px;
}
.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: 40px;
  padding-bottom: 44px;
}
.footer-brand .brand {
  color: #fff;
  margin-bottom: 16px;
}
.footer-brand .brand:hover {
  color: #fff;
}
.footer-brand p {
  max-width: 340px;
  line-height: 1.8;
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 18px;
}
.footer-col li {
  margin-bottom: 11px;
}
.footer-col a {
  color: var(--dark-text-2);
}
.footer-col a:hover {
  color: #fff;
}
.footer-col li small {
  display: block;
  font-size: 12.5px;
  color: rgba(169, 184, 212, 0.72);
  margin-top: 2px;
  line-height: 1.5;
}
/* 页脚口号 */
.footer-slogan {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--dark-line);
  max-width: 340px;
}
.footer-slogan .bo {
  display: block;
  font-family: var(--font-bo);
  font-size: 17px;
  line-height: 2;
  color: rgba(255, 255, 255, 0.94);
}
.footer-slogan .zh {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  letter-spacing: 0.22em;
  color: var(--dark-text-2);
}

/* 专业中心卡（四大中心） */
.company-card {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}
.company-card .co-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}
.company-card .co-mark {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 17px;
  font-weight: 800;
  flex-shrink: 0;
}
.co-mark--tech {
  background: linear-gradient(135deg, #1e5eff 0%, #4b7dff 100%);
}
.co-mark--consult {
  background: linear-gradient(135deg, #0aa37f 0%, #2fca9c 100%);
}
.co-mark--ip {
  background: linear-gradient(135deg, #7c4dff 0%, #a37bff 100%);
}
.co-mark--media {
  background: linear-gradient(135deg, #e0651a 0%, #ff9a4d 100%);
}
.company-card .co-name {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.35;
}
.company-card .co-role {
  font-size: 13px;
  color: var(--ink-3);
  margin-top: 3px;
}
.company-card p {
  font-size: 14.5px;
  margin-bottom: 18px;
}
.company-card .card-foot {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}
.footer-bottom {
  border-top: 1px solid var(--dark-line);
  padding: 24px 0 32px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 13.5px;
}
.footer-bottom a {
  color: var(--dark-text-2);
}
.footer-bottom a:hover {
  color: #fff;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

/* 滚动显现动画
   仅在 html.js（JS 可用）时隐藏待入场元素；无 JS 环境内容直接可见 */
.js .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
  will-change: opacity, transform;
}
.js .reveal.is-in {
  opacity: 1;
  transform: none;
}

/* 404 */
.notfound {
  min-height: 62dvh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 80px 0;
}
.notfound .code {
  font-size: clamp(72px, 14vw, 140px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  background: linear-gradient(120deg, var(--brand) 0%, #7c4dff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 8px;
}

/* ---------- 07.5 成员公司 / 项目视频 / 小程序（2026-09-27 新增） ---------- */
/* 群岛网络科技卡片：整行铺满，排在四家之首 */
.company-card--lead {
  grid-column: 1 / -1;
}
.company-card--lead .co-role {
  color: var(--brand-600);
}

/* 项目实录 · 视频墙 */
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.video-card {
  display: flex;
  flex-direction: column;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: #fff;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #0a1730;
}
.video-frame > video,
.video-frame > iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}
/* 外链播放器：先显示封面，点击后再加载（避免拖慢页面） */
.video-poster {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  gap: 10px;
  border: 0;
  padding: 0;
  cursor: pointer;
  color: #fff;
  background: linear-gradient(135deg, #0d2145 0%, #2563eb 100%);
  background-size: cover;
  background-position: center;
  font: inherit;
}
.video-poster::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 14, 32, 0.1) 0%, rgba(6, 14, 32, 0.55) 100%);
}
.video-poster .play-icon {
  position: relative;
  z-index: 1;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.92);
  color: var(--brand-600);
  font-size: 20px;
}
.video-poster .play-text {
  position: relative;
  z-index: 1;
  font-size: 13px;
  letter-spacing: 0.06em;
  opacity: 0.9;
}
.video-poster:hover .play-icon {
  background: #fff;
}
.video-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.video-body h3 {
  font-size: 16.5px;
}
.video-body p {
  font-size: 14px;
  flex: 1;
}

/* 小程序与游戏页 */
.app-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}
.app-card {
  display: flex;
  gap: 22px;
  align-items: flex-start;
}
.app-qr {
  flex: 0 0 auto;
  width: 116px;
  height: 116px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  object-fit: contain;
}
.app-qr--empty {
  display: grid;
  place-items: center;
  padding: 10px;
  text-align: center;
  font-size: 12px;
  line-height: 1.5;
  color: var(--ink-3);
  background: var(--bg-soft);
  border-style: dashed;
}
.app-main {
  flex: 1;
  min-width: 0;
}
.app-main h3 {
  font-size: 17px;
  margin-bottom: 4px;
}
.app-role {
  font-size: 13px;
  color: var(--ink-3);
  margin-bottom: 10px;
}
.app-main p {
  font-size: 14.5px;
}
.app-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
}
/* 微信开放标签（wx-open-launch-weapp）：外层负责布局，内部按钮样式写在模板里 */
.weapp-wrap {
  position: relative;
  display: inline-block;
  line-height: 0;
  -webkit-tap-highlight-color: transparent;
}
.weapp-wrap wx-open-launch-weapp {
  display: inline-block;
}
.weapp-fallback {
  display: none;
}
.mini-hint {
  font-size: 13px;
  color: var(--ink-3);
  line-height: 1.6;
}
.weapp-wrap[data-weapp-state="unsupported"] .weapp-fallback {
  display: inline-flex;
}
.weapp-wrap[data-weapp-state="unsupported"] wx-open-launch-weapp {
  display: none;
}
.h5-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #0a1730;
}
.h5-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.how-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.note-band {
  border: 1px solid var(--line);
  border-left: 3px solid var(--brand);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: var(--brand-050);
  padding: 18px 22px;
  font-size: 14.5px;
  color: var(--ink-2);
}
.note-band strong {
  color: var(--ink);
}

@media (max-width: 1080px) {
  .video-grid,
  .how-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .app-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 640px) {
  .video-grid,
  .how-grid {
    grid-template-columns: 1fr;
  }
  .app-card {
    flex-direction: column;
    gap: 16px;
  }
  .app-qr {
    width: 132px;
    height: 132px;
    margin: 0 auto;
  }
}

/* ---------- 08 响应式断点 ---------- */
/* 平板横屏及以下 */
@media (max-width: 1080px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-visual {
    max-width: 560px;
  }
  .float-badge {
    right: 0;
  }
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .step:nth-child(2)::after {
    display: none;
  }
  .stat-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px 24px;
  }
  .logo-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer-top {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 小屏以下切换为抽屉导航 */
@media (max-width: 900px) {
  :root {
    --header-h: 64px;
  }
  .nav,
  .header-tel {
    display: none;
  }
  .nav-toggle {
    display: grid;
  }
  .grid--3,
  .biz-block {
    grid-template-columns: 1fr;
  }
  .biz-block--rev .biz-media {
    order: 0;
  }
  .hero {
    min-height: auto;
  }
}

/* 手机 */
@media (max-width: 640px) {
  :root {
    --gutter: 18px;
  }
  body {
    font-size: 15.5px;
  }
  .grid--2,
  .grid--3,
  .grid--4,
  .form-grid,
  .steps,
  .stat-strip {
    grid-template-columns: 1fr;
  }
  .logo-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .hero-stats {
    gap: 14px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .slogan-zh {
    letter-spacing: 0.16em;
    text-indent: 0.16em;
    gap: 10px;
  }
  .slogan-bo {
    line-height: 2.05;
  }
  .float-badge {
    position: static;
    margin-top: 16px;
    box-shadow: var(--shadow-md);
  }
  .step:not(:last-child)::after {
    display: none;
  }
  .btn {
    padding: 12px 22px;
  }
  .btn--lg {
    padding: 14px 26px;
  }
  .hero-actions .btn,
  .cta-actions .btn {
    flex: 1 1 auto;
  }
  .card,
  .case-body {
    padding: 22px;
  }
}

/* 超小屏 */
@media (max-width: 380px) {
  .brand-text small {
    display: none;
  }
}

/* ---------- 09 无障碍与动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal,
  .js .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* 打印 */
@media print {
  .site-header,
  .mobile-nav,
  .cta-band,
  .site-footer,
  .filters {
    display: none !important;
  }
  body {
    color: #000;
  }
  .hero,
  .page-hero {
    background: none;
    color: #000;
    min-height: auto;
    padding: 0 0 24px;
  }
  .hero h1,
  .page-hero h1,
  .hero-stats .num {
    color: #000;
  }
  .js .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
}