/* ==========================================================================
   讯安官网 · 设计系统
   风格：机构级可信度 / 深色科技 / 克制留白
   主色仅三种：#080f1c 系列深蓝黑、#00d4a0 科技青绿、#2f7bff 电光蓝
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root {
  --bg: #080f1c;
  --bg-2: #0b1626;
  --bg-3: #0e1c30;
  --surface: rgba(255, 255, 255, 0.02);
  --surface-2: rgba(255, 255, 255, 0.035);

  --accent: #00d4a0;
  --accent-soft: rgba(0, 212, 160, 0.12);
  --accent-line: rgba(0, 212, 160, 0.32);
  --blue: #2f7bff;
  --blue-soft: rgba(47, 123, 255, 0.12);

  --text: #e8eef7;
  --text-2: #9fb0c7;
  --text-3: #6b7f99;

  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.16);

  --radius-card: 14px;
  --radius-btn: 9px;
  --radius-pill: 999px;

  --font: 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', 'Noto Sans CJK SC', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'SF Mono', 'JetBrains Mono', 'Roboto Mono', ui-monospace, 'Cascadia Mono', Consolas, monospace;

  --container: 1180px;
  --gutter: 28px;
  --header-h: 68px;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.42);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

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

h1, h2, h3, h4, h5 {
  margin: 0;
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: -0.01em;
}

p { margin: 0; }

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.22s var(--ease);
}

a:hover { color: var(--accent); }

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

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: 0;
  background: none;
  color: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

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

::selection {
  background: rgba(0, 212, 160, 0.26);
  color: #fff;
}

/* 仅供屏幕阅读器 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 跳转链接（键盘可达） */
.skip-link {
  position: fixed;
  top: -60px;
  left: 16px;
  z-index: 300;
  padding: 10px 18px;
  border-radius: var(--radius-btn);
  background: var(--accent);
  color: #04140f;
  font-size: 14px;
  font-weight: 600;
  transition: top 0.2s var(--ease);
}

.skip-link:focus { top: 14px; color: #04140f; }

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

.section {
  padding: 96px 0;
  position: relative;
}

.section--tight { padding: 64px 0; }

.section--alt {
  background: linear-gradient(180deg, rgba(11, 22, 38, 0) 0%, var(--bg-2) 18%, var(--bg-2) 82%, rgba(11, 22, 38, 0) 100%);
}

.section-head {
  max-width: 760px;
  margin-bottom: 48px;
}

.section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--accent-line);
}

.section-head--center .eyebrow::before { display: none; }

.section-title {
  font-size: clamp(26px, 3.1vw, 38px);
  letter-spacing: -0.02em;
}

.section-desc {
  margin-top: 16px;
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.8;
}

.lead {
  font-size: 17px;
  color: var(--text-2);
  line-height: 1.85;
}

.mono { font-family: var(--font-mono); }

.text-accent { color: var(--accent); }
.text-dim { color: var(--text-2); }
.text-faint { color: var(--text-3); }

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 26px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition: background 0.24s var(--ease), border-color 0.24s var(--ease),
              transform 0.24s var(--ease), box-shadow 0.24s var(--ease), color 0.24s var(--ease);
  white-space: nowrap;
}

.btn--primary {
  background: var(--accent);
  color: #04140f;
  box-shadow: 0 8px 26px rgba(0, 212, 160, 0.2);
}

.btn--primary:hover {
  background: #22e5b4;
  color: #04140f;
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(0, 212, 160, 0.28);
}

.btn--ghost {
  border-color: var(--line-strong);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}

.btn--ghost:hover {
  border-color: var(--accent-line);
  color: var(--accent);
  background: var(--accent-soft);
}

.btn--sm { padding: 9px 18px; font-size: 14px; }
.btn--block { width: 100%; }

.btn-arrow {
  display: inline-block;
  transition: transform 0.24s var(--ease);
}

.btn:hover .btn-arrow { transform: translateX(4px); }

/* 文本链接 */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

.link-arrow::after {
  content: '→';
  transition: transform 0.24s var(--ease);
}

.link-arrow:hover::after { transform: translateX(4px); }

/* ---------- 5. 头部导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(8, 15, 28, 0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}

.site-header.is-scrolled {
  background: rgba(8, 15, 28, 0.92);
  border-bottom-color: var(--line);
}

.header-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  gap: 26px;
}

/* Logo */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
}

.logo-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

/* 品牌名「讯安技术」：字标字重，留白收紧以免挤压导航 */
.logo-name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.logo-sub {
  font-size: 10px;
  color: var(--text-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* 主菜单 */
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav-link {
  position: relative;
  padding: 8px 14px;
  border-radius: 7px;
  font-size: 14.5px;
  color: var(--text-2);
  font-weight: 500;
  white-space: nowrap;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}

.nav-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.nav-link.is-active { color: var(--accent); }

.nav-link.is-active::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}

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

/* 语言切换 */
.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.02);
}

.lang-switch button {
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-3);
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}

.lang-switch button:hover { color: var(--text); }

.lang-switch button.is-active {
  background: rgba(0, 212, 160, 0.14);
  color: var(--accent);
}

.header-cta { display: inline-flex; }

/* 汉堡菜单 */
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 1px solid var(--line);
  place-items: center;
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  width: 17px;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  position: relative;
  transition: transform 0.26s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 17px;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.26s var(--ease), top 0.26s var(--ease);
}

.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }

.nav-toggle[aria-expanded='true'] span { transform: rotate(45deg); }
.nav-toggle[aria-expanded='true'] span::before { top: 0; transform: rotate(0); opacity: 0; }
.nav-toggle[aria-expanded='true'] span::after { top: 0; transform: rotate(-90deg); }

/* 移动端下拉面板 */
.mobile-panel {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  z-index: 89;
  background: rgba(9, 17, 31, 0.98);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
  padding: 14px var(--gutter) 26px;
  display: none;
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
}

.mobile-panel.is-open { display: block; }

.mobile-panel .nav-link {
  display: block;
  padding: 13px 4px;
  font-size: 15.5px;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
}

.mobile-panel .nav-link.is-active { color: var(--accent); }
.mobile-panel .nav-link.is-active::after { display: none; }

.mobile-panel .btn { margin-top: 18px; }

/* ---------- 6. Hero 与页面头 ---------- */
.hero {
  position: relative;
  padding: calc(var(--header-h) + 92px) 0 88px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

/* 网格 + 径向光晕 + 渐变，全部 CSS 生成，不使用图库大图 */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 0%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 0%, #000 30%, transparent 78%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  top: -280px;
  right: -160px;
  width: 820px;
  height: 820px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 160, 0.16) 0%, rgba(47, 123, 255, 0.08) 38%, transparent 68%);
  filter: blur(28px);
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  bottom: -320px;
  left: -220px;
  width: 760px;
  height: 760px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 123, 255, 0.14) 0%, transparent 66%);
  filter: blur(30px);
  pointer-events: none;
}

.hero-inner { position: relative; z-index: 2; max-width: 880px; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 15px 7px 11px;
  border: 1px solid var(--accent-line);
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 28px;
}

.hero-eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 212, 160, 0.18);
}

.hero h1 {
  font-size: clamp(32px, 5vw, 58px);
  line-height: 1.16;
  letter-spacing: -0.03em;
  font-weight: 600;
}

.hero h1 .hl {
  color: var(--accent);
  position: relative;
  white-space: nowrap;
}

.hero-sub {
  margin-top: 26px;
  font-size: clamp(15px, 1.35vw, 17.5px);
  line-height: 1.85;
  color: var(--text-2);
  max-width: 720px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

/* 授权标识条 */
.auth-bar {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.012));
  overflow: hidden;
}

.auth-item {
  padding: 20px 22px;
  border-right: 1px solid var(--line);
}

.auth-item:last-child { border-right: 0; }

.auth-item .k {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 7px;
}

.auth-item .v {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}

/* 内页页头 */
.page-head {
  position: relative;
  padding: calc(var(--header-h) + 68px) 0 60px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-head::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 100% at 20% 0%, #000 20%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse 70% 100% at 20% 0%, #000 20%, transparent 72%);
  pointer-events: none;
}

.page-head::after {
  content: '';
  position: absolute;
  top: -240px;
  right: -120px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 212, 160, 0.1) 0%, transparent 66%);
  filter: blur(24px);
  pointer-events: none;
}

.page-head .container { position: relative; z-index: 2; }

.page-head h1 {
  font-size: clamp(28px, 3.8vw, 42px);
  letter-spacing: -0.025em;
  margin-top: 20px;
}

.page-head .lead {
  margin-top: 18px;
  max-width: 680px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  color: var(--text-3);
}

.breadcrumb a { color: var(--text-2); }
.breadcrumb a:hover { color: var(--accent); }

.breadcrumb .sep { color: var(--text-3); opacity: 0.55; }

.breadcrumb [aria-current] { color: var(--text); }

/* ---------- 7. 卡片与网格 ---------- */
.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative;
  padding: 26px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.045) 0%, rgba(255, 255, 255, 0.012) 55%, rgba(255, 255, 255, 0.006) 100%);
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease),
              background 0.28s var(--ease), box-shadow 0.28s var(--ease);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.065) 0%, rgba(255, 255, 255, 0.02) 60%, rgba(255, 255, 255, 0.008) 100%);
  box-shadow: var(--shadow);
}

.card--link { color: inherit; }
.card--link:hover { color: inherit; }

.card--accent {
  border-color: rgba(0, 212, 160, 0.2);
  background: linear-gradient(160deg, rgba(0, 212, 160, 0.07) 0%, rgba(255, 255, 255, 0.012) 60%);
}

.card--accent:hover { border-color: var(--accent-line); }

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: rgba(0, 212, 160, 0.1);
  border: 1px solid rgba(0, 212, 160, 0.2);
  color: var(--accent);
  margin-bottom: 20px;
  flex-shrink: 0;
}

.card-icon svg { width: 21px; height: 21px; }

.card-icon--blue {
  background: var(--blue-soft);
  border-color: rgba(47, 123, 255, 0.22);
  color: #6ea3ff;
}

.card-title {
  font-size: 17.5px;
  font-weight: 600;
  margin-bottom: 9px;
}

.card-desc {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-2);
}

.card-foot {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: var(--text-3);
}

.card-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

/* 数据背书 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent);
}

.stat {
  padding: 32px 26px;
  border-right: 1px solid var(--line);
  position: relative;
}

.stat:last-child { border-right: 0; }

.stat::before {
  content: '';
  position: absolute;
  top: 0;
  left: 26px;
  width: 28px;
  height: 2px;
  background: var(--accent);
  opacity: 0.65;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2vw, 25px);
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
  line-height: 1.35;
  word-break: break-all;
}

.stat-label {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-3);
}

/* 标签 */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  font-size: 12.5px;
  color: var(--text-2);
  line-height: 1.7;
}

.tag--accent {
  border-color: var(--accent-line);
  background: var(--accent-soft);
  color: var(--accent);
}

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

/* 列表（带强调点的要点） */
.bullet-list { display: grid; gap: 13px; }

.bullet-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-2);
}

.bullet-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--accent);
  opacity: 0.8;
  transform: rotate(45deg);
}

.bullet-list--check li::before {
  content: '✓';
  background: none;
  color: var(--accent);
  width: auto;
  height: auto;
  top: 0;
  font-size: 13px;
  transform: none;
}

/* ---------- 8. 产品中心 ---------- */
.line-section { padding: 62px 0; border-bottom: 1px solid var(--line); }
.line-section:last-child { border-bottom: 0; }

.line-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: end;
  margin-bottom: 32px;
}

.line-title-row {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.line-title { font-size: clamp(21px, 2.3vw, 27px); }

.line-title-en {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

.line-desc {
  margin-top: 10px;
  color: var(--text-2);
  font-size: 15px;
  max-width: 640px;
}

.line-count {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 5px 14px;
  white-space: nowrap;
}

.line-anchor-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
}

.line-anchor-nav a {
  font-size: 13.5px;
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  color: var(--text-2);
  background: rgba(255, 255, 255, 0.02);
  transition: all 0.22s var(--ease);
}

.line-anchor-nav a:hover {
  border-color: var(--accent-line);
  color: var(--accent);
  background: var(--accent-soft);
}

.product-card .product-en {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-3);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.product-card .card-foot { margin-top: 18px; }

.content-notice {
  margin: 18px 0 0;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--blue);
  border-radius: 4px 9px 9px 4px;
  background: rgba(47, 123, 255, 0.05);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-2);
}

/* ---------- 9. 产品详情 ---------- */
.product-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 48px;
  align-items: start;
}

.product-main { min-width: 0; }

.product-hero {
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 40px;
}

.product-hero h1 {
  font-size: clamp(28px, 3.4vw, 40px);
  letter-spacing: -0.025em;
  margin-top: 18px;
}

.product-hero .en {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-3);
  letter-spacing: 0.05em;
  margin-top: 10px;
}

.tagline {
  margin-top: 20px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--text);
  padding-left: 16px;
  border-left: 2px solid var(--accent);
}

.value-box {
  margin-top: 30px;
  padding: 22px 24px;
  border-radius: var(--radius-card);
  border: 1px solid var(--accent-line);
  background: linear-gradient(140deg, rgba(0, 212, 160, 0.08), rgba(0, 212, 160, 0.015));
}

.value-box .label {
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
  font-weight: 600;
}

.value-box p {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text);
}

.product-block { margin-bottom: 44px; }

.block-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 19px;
  font-weight: 600;
  margin-bottom: 20px;
}

.block-title::before {
  content: '';
  width: 3px;
  height: 17px;
  border-radius: 2px;
  background: var(--accent);
}

.cap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.cap-card {
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.022);
  transition: border-color 0.26s var(--ease), background 0.26s var(--ease), transform 0.26s var(--ease);
}

.cap-card:hover {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.04);
  transform: translateY(-2px);
}

.cap-card h3 {
  font-size: 15.5px;
  margin-bottom: 8px;
  display: flex;
  gap: 10px;
  align-items: baseline;
}

.cap-card h3 .idx {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--accent);
  flex-shrink: 0;
}

.cap-card p {
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-2);
}

.deploy-box {
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--blue);
  border-radius: 4px 12px 12px 4px;
  background: rgba(47, 123, 255, 0.05);
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.deploy-box .icon {
  color: #6ea3ff;
  flex-shrink: 0;
  margin-top: 3px;
}

.deploy-box .icon svg { width: 18px; height: 18px; }

.deploy-box p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-2);
}

/* FAQ 折叠 */
.faq-list { display: grid; gap: 12px; }

.faq-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.022);
  overflow: hidden;
  transition: border-color 0.24s var(--ease);
}

.faq-item[open] { border-color: var(--line-strong); }

.faq-item summary {
  padding: 17px 22px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  list-style: none;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-family: var(--font-mono);
  font-size: 19px;
  color: var(--accent);
  flex-shrink: 0;
  transition: transform 0.24s var(--ease);
}

.faq-item[open] summary::after { transform: rotate(45deg); }

.faq-body {
  padding: 0 22px 20px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-2);
}

/* 侧栏 */
.product-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 26px);
  display: grid;
  gap: 16px;
}

.side-cta {
  padding: 26px 24px;
  border: 1px solid var(--accent-line);
  border-radius: var(--radius-card);
  background: linear-gradient(160deg, rgba(0, 212, 160, 0.1), rgba(8, 15, 28, 0.6));
}

.side-cta h3 { font-size: 17px; margin-bottom: 12px; }

.side-cta p {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-2);
  margin-bottom: 20px;
}

.side-contact {
  display: grid;
  gap: 12px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 13px;
}

.side-contact .row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--text-3);
}

.side-contact .row span:last-child {
  color: var(--text-2);
  text-align: right;
  word-break: break-word;
}

.side-links {
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.022);
}

.side-links h4 {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 14px;
}

.side-links ul { display: grid; gap: 2px; }

.side-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 0;
  font-size: 13.5px;
  color: var(--text-2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.side-links li:last-child a { border-bottom: 0; }
.side-links a:hover { color: var(--accent); }

/* 页脚固定覆盖说明（产品详情页常驻一行） */
.coverage-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 80;
  padding: 9px 18px;
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--text-3);
  background: rgba(6, 12, 22, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
}

body.has-coverage-bar { padding-bottom: 38px; }

body.has-coverage-bar .toast { bottom: 58px; }

/* ---------- 10. 解决方案 ---------- */
.solution-card {
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.01));
  transition: border-color 0.28s var(--ease), transform 0.28s var(--ease), box-shadow 0.28s var(--ease);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.solution-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.solution-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.solution-head h3 { font-size: 18px; }

.solution-head .en {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
  letter-spacing: 0.05em;
  margin-top: 5px;
}

.solution-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-3);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 3px 8px;
  flex-shrink: 0;
}

.solution-part { margin-bottom: 16px; }
.solution-part:last-child { margin-bottom: 0; }

.solution-part .k {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 8px;
}

.solution-part p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-2);
}

.solution-products {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.solution-products a,
.solution-products span {
  font-size: 12.5px;
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-2);
  transition: all 0.2s var(--ease);
}

.solution-products a:hover {
  border-color: var(--accent-line);
  color: var(--accent);
  background: var(--accent-soft);
}

/* ---------- 11. 服务流程 ---------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.process-step {
  background: var(--bg);
  padding: 28px 26px;
  position: relative;
  transition: background 0.28s var(--ease);
}

.process-step:hover { background: var(--bg-3); }

.process-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}

.process-step h3 { font-size: 16.5px; margin-bottom: 9px; }

.process-step p {
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--text-2);
}

/* 服务清单 */
.service-card {
  padding: 26px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
  height: 100%;
  transition: border-color 0.26s var(--ease), transform 0.26s var(--ease);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.service-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

.service-card h3 { font-size: 17px; margin-bottom: 11px; }

.service-card > p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-2);
  margin-bottom: 18px;
}

.service-includes {
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.service-includes .k {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 10px;
}

.service-includes ul { display: grid; gap: 7px; }

.service-includes li {
  font-size: 13.5px;
  color: var(--text-2);
  padding-left: 16px;
  position: relative;
  line-height: 1.6;
}

.service-includes li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
}

/* ---------- 12. 表格 ---------- */
.table-wrap {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.015);
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

table.data thead th {
  text-align: left;
  padding: 14px 22px;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 600;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

table.data tbody td {
  padding: 16px 22px;
  border-bottom: 1px solid var(--line);
  color: var(--text-2);
  line-height: 1.7;
  vertical-align: top;
}

table.data tbody tr:last-child td { border-bottom: 0; }

table.data tbody tr:hover td { background: rgba(255, 255, 255, 0.02); }

table.data td:first-child {
  color: var(--text);
  font-weight: 500;
  white-space: nowrap;
}

table.data td.mono-cell {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-3);
}

/* ---------- 13. 案例 ---------- */
.case-card {
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.01));
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: border-color 0.26s var(--ease), transform 0.26s var(--ease);
}

.case-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

.case-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  font-size: 12px;
  color: var(--text-3);
}

.case-meta .sep { opacity: 0.4; }

.case-card h3 {
  font-size: 17.5px;
  line-height: 1.5;
  margin-bottom: 14px;
}

.case-row {
  margin-bottom: 14px;
}

.case-row .k {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 7px;
}

.case-row p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-2);
}

.case-row--effect {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.case-row--effect p { color: var(--text-3); font-style: italic; }

/* ---------- 14. 新闻 ---------- */
.news-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.news-tab {
  padding: 8px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-size: 13.5px;
  color: var(--text-2);
  background: rgba(255, 255, 255, 0.02);
  transition: all 0.22s var(--ease);
}

.news-tab:hover { border-color: var(--line-strong); color: var(--text); }

.news-tab.is-active {
  border-color: var(--accent-line);
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

.news-list { display: grid; gap: 0; border-top: 1px solid var(--line); }

.news-item {
  display: grid;
  grid-template-columns: 148px 1fr auto;
  gap: 28px;
  align-items: center;
  padding: 26px 4px;
  border-bottom: 1px solid var(--line);
  transition: background 0.24s var(--ease), padding 0.24s var(--ease);
}

.news-item:hover {
  background: rgba(255, 255, 255, 0.022);
  padding-left: 14px;
  padding-right: 14px;
}

.news-date {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

.news-body h3 {
  font-size: 16.5px;
  line-height: 1.55;
  margin-bottom: 7px;
  transition: color 0.22s var(--ease);
}

.news-item:hover .news-body h3 { color: var(--accent); }

.news-body p {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-arrow {
  font-size: 16px;
  color: var(--text-3);
  transition: transform 0.24s var(--ease), color 0.24s var(--ease);
}

.news-item:hover .news-arrow { color: var(--accent); transform: translateX(4px); }

/* 新闻详情 */
.article { max-width: 780px; }

.article h1 {
  font-size: clamp(25px, 3vw, 34px);
  letter-spacing: -0.02em;
  line-height: 1.4;
  margin-top: 20px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 20px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  color: var(--text-3);
}

.article-body { padding-top: 32px; }

.article-body p {
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--text-2);
  margin-bottom: 22px;
}

.article-body p:last-child { margin-bottom: 0; }

/* ---------- 15. 表单 ---------- */
.contact-layout {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.form-panel {
  padding: 34px 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.012));
}

.form-panel--wide { padding: 40px 40px 36px; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.field { display: flex; flex-direction: column; gap: 8px; }

.field--full { grid-column: 1 / -1; }

.field label {
  font-size: 13px;
  color: var(--text-2);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.field label .req { color: var(--accent); font-size: 12px; }

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.025);
  color: var(--text);
  font-size: 14.5px;
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.field input::placeholder,
.field textarea::placeholder { color: var(--text-3); }

.field input:hover,
.field select:hover,
.field textarea:hover { border-color: var(--line-strong); }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent-line);
  background: rgba(0, 212, 160, 0.04);
  box-shadow: 0 0 0 3px rgba(0, 212, 160, 0.1);
}

.field textarea { resize: vertical; min-height: 118px; line-height: 1.7; }

.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7f99' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 38px;
  cursor: pointer;
}

.field select option { background: var(--bg-3); color: var(--text); }

/* 错误态 */
.field.is-error input,
.field.is-error select,
.field.is-error textarea {
  border-color: rgba(255, 99, 99, 0.62);
  background: rgba(255, 99, 99, 0.05);
}

.field.is-error input:focus,
.field.is-error textarea:focus {
  box-shadow: 0 0 0 3px rgba(255, 99, 99, 0.12);
}

.field-error {
  font-size: 12.5px;
  color: #ff7b7b;
  min-height: 0;
  display: none;
  line-height: 1.4;
}

.field.is-error .field-error { display: block; }

.form-actions {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.form-note {
  font-size: 12.5px;
  color: var(--text-3);
  line-height: 1.6;
}

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 42px;
  z-index: 200;
  transform: translate(-50%, 24px);
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 14px 24px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--accent-line);
  background: rgba(9, 24, 22, 0.96);
  color: var(--text);
  font-size: 14px;
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  max-width: calc(100vw - 40px);
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.toast .icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent);
  color: #04140f;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.toast .msg { line-height: 1.5; }

/* ---------- 16. 联系方式块 ---------- */
.contact-item {
  display: flex;
  gap: 15px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.contact-item:last-child { border-bottom: 0; }

.contact-item .icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: rgba(0, 212, 160, 0.08);
  border: 1px solid rgba(0, 212, 160, 0.18);
  color: var(--accent);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.contact-item .icon svg { width: 17px; height: 17px; }

.contact-item .k {
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 5px;
}

.contact-item .v {
  font-size: 14.5px;
  color: var(--text);
  line-height: 1.65;
  word-break: break-word;
}

.contact-item .v a { color: var(--text); }
.contact-item .v a:hover { color: var(--accent); }

.contact-panel {
  padding: 30px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.012));
}

/* 素材插槽：有图显示图，缺图回落到占位说明 */
.image-slot {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.018);
  overflow: hidden;
  display: grid;
  place-items: center;
  min-height: 200px;
}

.image-slot img {
  width: 100%;
  height: auto;
  display: block;
}

.image-slot-note {
  display: none;
  padding: 26px 22px;
  text-align: center;
  color: var(--text-3);
  font-size: 13px;
  line-height: 1.72;
}

.image-slot.is-empty {
  border-style: dashed;
  border-color: var(--line-strong);
  min-height: 200px;
}

.image-slot.is-empty img { display: none; }

.image-slot.is-empty .image-slot-note { display: block; }

.image-slot--map,
.image-slot--qr { min-height: 220px; }

.image-slot--qr { min-height: 200px; }

.image-slot--auth { border: 0; background: transparent; min-height: 0; }

.image-slot--auth .image-slot-note {
  padding: 16px;
  border: 1px dashed var(--line-strong);
  border-radius: 10px;
  font-size: 12.5px;
}

.image-slot--auth.is-empty .image-slot-note { display: block; }

/* ---------- 17. 关于我们 ---------- */
.intro-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 56px;
  align-items: start;
}

.intro-text p {
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--text-2);
  margin-bottom: 20px;
}

.intro-text p:last-child { margin-bottom: 0; }

.intro-text strong { color: var(--text); font-weight: 600; }

.auth-card {
  padding: 28px 26px;
  border: 1px solid var(--accent-line);
  border-radius: var(--radius-card);
  background: linear-gradient(165deg, rgba(0, 212, 160, 0.09), rgba(8, 15, 28, 0.5));
}

.auth-card h3 {
  font-size: 16px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.auth-card h3 svg { width: 18px; height: 18px; color: var(--accent); }

.auth-rows { display: grid; gap: 0; }

.auth-rows .row {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  font-size: 13.5px;
}

.auth-rows .row:last-child { border-bottom: 0; }

.auth-rows .row .k { color: var(--text-3); }

.auth-rows .row .v {
  color: var(--text);
  text-align: right;
  word-break: break-word;
}

.authorization-file {
  margin-top: 20px;
  padding: 16px;
  border: 1px dashed var(--line-strong);
  border-radius: 10px;
  text-align: center;
  font-size: 12.5px;
  color: var(--text-3);
  line-height: 1.7;
}

/* 时间线 */
.timeline {
  position: relative;
  display: grid;
  gap: 0;
  padding-left: 30px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--accent-line), rgba(255, 255, 255, 0.06));
}

.timeline-item {
  position: relative;
  padding: 0 0 34px 0;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-item::before {
  content: '';
  position: absolute;
  left: -30px;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 4px rgba(0, 212, 160, 0.1);
}

.timeline-year {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}

.timeline-item h3 { font-size: 16px; margin-bottom: 7px; }

.timeline-item p {
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-2);
}

/* 城市网格 */
.city-card {
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.022);
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease);
}

.city-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.city-card .name {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 5px;
  display: flex;
  align-items: center;
  gap: 9px;
}

.city-card .name .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.city-card .role {
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}

.city-card .note {
  font-size: 13px;
  color: var(--text-3);
  line-height: 1.66;
}

/* 合规说明块 */
.notice-box {
  padding: 24px 26px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent);
  border-radius: 4px 12px 12px 4px;
  background: rgba(0, 212, 160, 0.04);
}

.notice-box h3 { font-size: 15.5px; margin-bottom: 14px; }

.notice-box ul { display: grid; gap: 9px; }

.notice-box li {
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-2);
  padding-left: 16px;
  position: relative;
}

.notice-box li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.75;
}

/* ---------- 18. 招聘 ---------- */
.job-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
  padding: 28px 28px;
  transition: border-color 0.26s var(--ease), transform 0.26s var(--ease);
}

.job-card:hover { border-color: var(--line-strong); transform: translateY(-3px); }

.job-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.job-head h3 { font-size: 18.5px; }

.job-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.job-body { display: grid; gap: 16px; margin-bottom: 22px; }

.job-row .k {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 7px;
}

.job-row p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-2);
}

/* ---------- 19. 法律文本页 ---------- */
.legal { max-width: 820px; }

.legal h2 {
  font-size: 19px;
  margin: 38px 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.legal h2:first-of-type { margin-top: 8px; }

.legal p {
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--text-2);
  margin-bottom: 14px;
}

.legal ul { margin: 0 0 16px; display: grid; gap: 9px; }

.legal li {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-2);
  padding-left: 18px;
  position: relative;
}

.legal li::before {
  content: '·';
  position: absolute;
  left: 4px;
  color: var(--accent);
  font-weight: 700;
}

.legal .updated {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-3);
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.02);
  margin-bottom: 8px;
}

.legal strong { color: var(--text); font-weight: 600; }

/* ---------- 20. 页脚 ---------- */
.site-footer {
  position: relative;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--bg) 0%, #060c16 100%);
  padding: 62px 0 0;
  margin-top: 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 44px;
  padding-bottom: 44px;
}

.footer-brand .logo { margin-bottom: 18px; }

.footer-desc {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-3);
  max-width: 340px;
  margin-bottom: 20px;
}

.footer-auth {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--accent-line);
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  font-size: 12px;
  color: var(--accent);
  font-weight: 500;
}

.footer-col h4 {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 18px;
  font-weight: 600;
}

.footer-col ul { display: grid; gap: 11px; }

.footer-col a,
.footer-col span {
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.6;
}

.footer-col a:hover { color: var(--accent); }

.footer-group {
  margin-top: 6px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}

.footer-group:first-child { margin-top: 0; }

.footer-contact li {
  display: flex;
  gap: 9px;
  font-size: 13px;
  color: var(--text-3);
  line-height: 1.6;
}

.footer-contact li .k {
  color: var(--text-3);
  opacity: 0.75;
  flex-shrink: 0;
  min-width: 44px;
}

.footer-contact li .v { color: var(--text-2); word-break: break-word; }

.footer-note {
  padding: 18px 0;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--text-3);
  line-height: 1.75;
}

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 22px 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--text-3);
}

.footer-legal {
  display: flex;
  align-items: center;
  gap: 8px 18px;
  flex-wrap: wrap;
}

.footer-legal a:hover { color: var(--accent); }

.footer-copy { line-height: 1.8; }

/* ---------- 21. CTA 条 ---------- */
.cta-band {
  position: relative;
  border: 1px solid var(--accent-line);
  border-radius: var(--radius-card);
  background:
    radial-gradient(ellipse 70% 140% at 85% 20%, rgba(0, 212, 160, 0.14) 0%, transparent 62%),
    linear-gradient(120deg, rgba(14, 28, 48, 0.9), rgba(8, 15, 28, 0.9));
  padding: 46px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  flex-wrap: wrap;
  overflow: hidden;
}

.cta-band h2 {
  font-size: clamp(22px, 2.4vw, 29px);
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.cta-band p {
  font-size: 14.5px;
  color: var(--text-2);
  max-width: 560px;
  line-height: 1.75;
}

.cta-actions { display: flex; gap: 13px; flex-wrap: wrap; }

/* ---------- 22. 滚动淡入 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.62s var(--ease), transform 0.62s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* 无 IntersectionObserver 时的降级 */
.no-observer .reveal {
  opacity: 1;
  transform: none;
  transition: none;
}

/* ---------- 23. 空状态 / 404 ---------- */
.empty-state {
  text-align: center;
  padding: 92px 24px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-card);
  background: rgba(255, 255, 255, 0.015);
}

.empty-state .code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.18em;
  margin-bottom: 18px;
}

.empty-state h2 { font-size: clamp(22px, 2.6vw, 30px); margin-bottom: 14px; }

.empty-state p {
  font-size: 14.5px;
  color: var(--text-2);
  max-width: 480px;
  margin: 0 auto 28px;
  line-height: 1.8;
}

/* ---------- 24. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-top { grid-template-columns: 1.4fr 1fr 1fr; gap: 36px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-desc { max-width: 560px; }
}

@media (max-width: 980px) {
  .main-nav { display: none; }
  .nav-toggle { display: grid; }
  .header-cta { display: none; }
  .header-actions { margin-left: auto; }
  .product-layout { grid-template-columns: 1fr; gap: 36px; }
  .product-sidebar { position: static; grid-template-columns: repeat(2, 1fr); }
  .contact-layout { grid-template-columns: 1fr; gap: 32px; }
  .intro-grid { grid-template-columns: 1fr; gap: 36px; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .auth-bar { grid-template-columns: repeat(2, 1fr); }
  .auth-item:nth-child(2) { border-right: 0; }
  .auth-item:nth-child(1),
  .auth-item:nth-child(2) { border-bottom: 1px solid var(--line); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(1),
  .stat:nth-child(2) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 860px) {
  :root { --gutter: 22px; --header-h: 62px; }
  .section { padding: 68px 0; }
  .section--tight { padding: 50px 0; }
  .hero { padding: calc(var(--header-h) + 66px) 0 64px; }
  .page-head { padding: calc(var(--header-h) + 48px) 0 44px; }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .cap-grid { grid-template-columns: 1fr; }
  .news-item {
    grid-template-columns: 1fr auto;
    gap: 8px 18px;
    padding: 22px 4px;
  }
  .news-date { grid-column: 1; font-size: 12px; }
  .news-arrow { grid-row: 1 / 3; align-self: center; }
  .news-body { grid-column: 1; }
  .news-body h3 { font-size: 15.5px; }
  .line-head { grid-template-columns: 1fr; gap: 14px; align-items: start; }
  .form-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 34px 28px; flex-direction: column; align-items: flex-start; }
  .form-panel--wide { padding: 28px 24px; }
  .footer-top { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 14px; }
  .product-sidebar { grid-template-columns: 1fr; }
  .hero-sub { font-size: 15px; }
  .toast { bottom: 26px; font-size: 13.5px; padding: 12px 20px; }
  .intro-grid { gap: 30px; }
}

@media (max-width: 560px) {
  .logo-sub { display: none; }
  .logo-mark { width: 30px; height: 30px; }
  .logo-name { font-size: 15px; }
  body { font-size: 15px; }
  :root { --gutter: 18px; }
  .hero h1 { font-size: clamp(27px, 8vw, 34px); }
  .hero h1 .hl { white-space: normal; }
  .hero-eyebrow { font-size: 12px; padding: 6px 13px 6px 10px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .auth-bar { grid-template-columns: 1fr; }
  .auth-item { border-right: 0; border-bottom: 1px solid var(--line); padding: 16px 18px; }
  .auth-item:last-child { border-bottom: 0; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid var(--line); padding: 24px 20px; }
  .stat:last-child { border-bottom: 0; }
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-brand { grid-column: auto; }
  .section-head { margin-bottom: 34px; }
  .card { padding: 22px 20px; }
  .form-panel { padding: 24px 20px; }
  .form-panel--wide { padding: 24px 20px; }
  .cta-band { padding: 28px 22px; }
  .cta-actions { width: 100%; }
  .cta-actions .btn { flex: 1; }
  .table-wrap { overflow-x: auto; }
  table.data { min-width: 520px; }
  .line-anchor-nav { gap: 7px; }
  .line-anchor-nav a { font-size: 12.5px; padding: 6px 12px; }
  .product-hero .tagline { font-size: 15.5px; }
  .lang-switch button { padding: 4px 9px; font-size: 12px; }
  .logo-sub { display: none; }
  .news-item { padding: 20px 2px; }
  .job-card { padding: 22px 20px; }
  .article-body p { font-size: 15px; }
}

/* ---------- 25. 减少动效偏好 ---------- */
@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;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }

  .card:hover,
  .solution-card:hover,
  .case-card:hover,
  .job-card:hover,
  .city-card:hover,
  .cap-card:hover,
  .service-card:hover {
    transform: none;
  }

  .btn:hover { transform: none; }
}

/* ---------- 26. 打印 ---------- */
@media print {
  body { background: #fff; color: #111; }
  .site-header, .mobile-panel, .site-footer, .cta-band, .toast { display: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}