/* ============================================
   亦往科技 - 企业官网设计系统
   简约大气 · 深蓝科技风
   ============================================ */

/* ---- 设计变量 ---- */
:root {
  /* 主色调 - 深邃科技蓝 */
  --navy-900: #0a1628;
  --navy-800: #0f1f3c;
  --navy-700: #16294d;
  --navy-600: #1e3a5f;
  --navy-500: #2a4a73;

  /* 强调色 */
  --accent: #2563eb;
  --accent-light: #3b82f6;
  --accent-glow: rgba(37, 99, 235, 0.15);

  /* 中性色 */
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --bg-muted: #f1f5f9;
  --border: #e2e8f0;
  --border-soft: #eef2f6;

  /* 文字色 */
  --text: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-inverse: #f8fafc;

  /* 间距 */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-2xl: 8rem;

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 999px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 6px rgba(15, 23, 42, 0.04), 0 10px 25px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 20px rgba(15, 23, 42, 0.06), 0 20px 50px rgba(15, 23, 42, 0.12);
  --shadow-accent: 0 8px 30px rgba(37, 99, 235, 0.25);

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Cascadia Code", monospace;

  /* 布局 */
  --container: 1200px;
  --nav-height: 72px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- 重置 ---- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

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

/* ---- 排版 ---- */
.section {
  padding: var(--space-2xl) 0;
}

.section--soft {
  background: var(--bg-soft);
}

.section--dark {
  background: var(--navy-900);
  color: var(--text-inverse);
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-xl);
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: var(--space-sm);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.section--dark .section-desc {
  color: rgba(248, 250, 252, 0.7);
}

/* ---- 按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-accent);
}

.btn--primary:hover {
  background: var(--navy-700);
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(37, 99, 235, 0.35);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}

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

.btn--light {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
}

.btn--light:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-arrow::after {
  content: "\2192";
  transition: transform var(--transition);
}

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

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.navbar--dark {
  background: rgba(10, 22, 40, 0.85);
}

.navbar--dark.scrolled {
  background: rgba(10, 22, 40, 0.95);
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

.nav-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--navy-600));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.navbar--dark .logo {
  color: #fff;
}

/* 导航链接 */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  position: relative;
  padding: 8px 18px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: all var(--transition);
}

.nav-links a:hover {
  color: var(--text);
  background: var(--bg-muted);
}

.nav-links a.active {
  color: var(--accent);
  font-weight: 700;
}

.nav-links a:not(.btn).active::after {
  content: "";
  position: absolute;
  right: 18px;
  bottom: 6px;
  left: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.navbar--dark .nav-links a.active {
  color: var(--accent-light);
}

.navbar--dark .nav-links a {
  color: rgba(248, 250, 252, 0.7);
}

.navbar--dark .nav-links a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.nav-cta {
  margin-left: var(--space-sm);
}

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}

.navbar--dark .nav-toggle span {
  background: #fff;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   Hero 区域
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--navy-900);
  color: #fff;
  overflow: hidden;
  padding-top: var(--nav-height);
}

/* Hero 背景网格 */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37, 99, 235, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.08) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 40%, transparent 100%);
}

/* Hero 光晕 */
.hero::after {
  content: "";
  position: absolute;
  top: -10%;
  right: -5%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.8);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
  backdrop-filter: blur(8px);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-light);
  box-shadow: 0 0 12px var(--accent-light);
}

.hero-title {
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
  max-width: 760px;
}

.hero-title .gradient {
  background: linear-gradient(120deg, #fff 30%, var(--accent-light) 50%, #fff 70%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 4s linear infinite;
}

@keyframes shimmer {
  to {
    background-position: 200% center;
  }
}

.hero-desc {
  font-size: 1.15rem;
  color: rgba(248, 250, 252, 0.65);
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: var(--space-lg);
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* Hero 浮动卡片 */
.hero-visual {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 45%;
  max-width: 520px;
  z-index: 1;
}

.float-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(12px);
  margin-bottom: var(--space-md);
  animation: floatY 6s ease-in-out infinite;
}

.float-card:nth-child(2) {
  animation-delay: -2s;
  margin-left: 40px;
}

.float-card:nth-child(3) {
  animation-delay: -4s;
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}

.float-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 12px;
}

.float-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.float-card p {
  font-size: 0.85rem;
  color: rgba(248, 250, 252, 0.55);
}

/* ============================================
   数据统计条
   ============================================ */
.stats {
  background: var(--navy-900);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  padding: var(--space-xl) 0;
}

.stat-item {
  text-align: center;
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: calc(var(--space-md) / -2);
  top: 20%;
  height: 60%;
  width: 1px;
  background: rgba(255, 255, 255, 0.08);
}

.stat-num {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  background: linear-gradient(135deg, #fff, var(--accent-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.9rem;
  color: rgba(248, 250, 252, 0.5);
  margin-top: 4px;
}

/* ============================================
   卡片网格
   ============================================ */
.card-grid {
  display: grid;
  gap: var(--space-md);
}

.card-grid--2 { grid-template-columns: repeat(2, 1fr); }
.card-grid--3 { grid-template-columns: repeat(3, 1fr); }
.card-grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent-glow), rgba(37, 99, 235, 0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  color: var(--accent);
}

.card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  letter-spacing: -0.01em;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-sm);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
}

.card-link::after {
  content: "\2192";
  transition: transform var(--transition);
}

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

/* 深色卡片 */
.section--dark .card {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.08);
}

.section--dark .card:hover {
  border-color: var(--accent-light);
  background: rgba(255, 255, 255, 0.06);
}

.section--dark .card p {
  color: rgba(248, 250, 252, 0.6);
}

/* ============================================
   时间线 (关于我们)
   ============================================ */
.timeline {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(var(--accent), var(--border));
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-lg);
}

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

.timeline-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid var(--accent);
  z-index: 1;
}

.timeline-year {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.05em;
}

.timeline-item h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 4px 0 8px;
}

.timeline-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ============================================
   价值观 / 特性条目
   ============================================ */
.value-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border-soft);
}

.value-row:last-child {
  border-bottom: none;
}

.value-num {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  font-family: var(--font-mono);
  flex-shrink: 0;
  width: 48px;
}

.value-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.value-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ============================================
   表单 (联系我们)
   ============================================ */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-xl);
  align-items: start;
}

.contact-info-item {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.contact-info-item .ci-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
  color: var(--accent);
}

.contact-info-item h4 {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.contact-info-item p {
  font-size: 1.05rem;
  font-weight: 500;
}

.contact-form {
  background: var(--bg-soft);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.form-group {
  margin-bottom: var(--space-sm);
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.form-control {
  width: 100%;
  padding: 14px 16px;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.form-success {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 16px;
  background: #ecfdf5;
  border: 1px solid #6ee7b7;
  border-radius: var(--radius-sm);
  color: #065f46;
  font-size: 0.95rem;
  margin-bottom: var(--space-sm);
}

.form-success.show {
  display: flex;
  animation: fadeUp 0.4s ease;
}

/* ===== 咨询记录后台 ===== */
.admin-page { min-height: 100vh; background: var(--bg-soft); }
.admin-shell { width: min(1080px, calc(100% - 2rem)); margin: 0 auto; padding: 4rem 0; }
.admin-card { max-width: 440px; margin: 6vh auto; padding: 2.5rem; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.admin-card h1, .admin-header h1 { margin: 1rem 0 .5rem; color: var(--navy-900); }
.admin-kicker { margin: 2rem 0 0; color: var(--accent); font-size: .75rem; font-weight: 700; letter-spacing: .12em; }
.admin-muted { color: var(--text-secondary); line-height: 1.7; }
.admin-form { display: grid; gap: .75rem; margin-top: 2rem; }
.admin-form .btn { justify-content: center; margin-top: .5rem; }
.admin-error { min-height: 1.25rem; margin: 0; color: #dc2626; font-size: .9rem; }
.admin-dashboard { background: #fff; padding: clamp(1.25rem, 4vw, 2.5rem); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.admin-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; border-bottom: 1px solid var(--border); padding-bottom: 1.5rem; }
.admin-count { margin: 1.5rem 0 1rem; color: var(--text-muted); font-size: .9rem; }
.records-list { display: grid; gap: 1rem; }
.record-card { padding: 1.25rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-soft); }
.record-card__header { display: flex; justify-content: space-between; gap: 1rem; color: var(--navy-900); }
.record-card__header time { color: var(--text-muted); font-size: .85rem; white-space: nowrap; }
.record-meta { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .75rem 1.5rem; margin: 1.25rem 0; }
.record-meta div { min-width: 0; }
.record-meta dt, .record-message span { color: var(--text-muted); font-size: .8rem; }
.record-meta dd { margin: .2rem 0 0; color: var(--text-primary); overflow-wrap: anywhere; }
.record-message { border-top: 1px solid var(--border); padding-top: 1rem; }
.record-message p { margin: .35rem 0 0; color: var(--text-secondary); line-height: 1.7; overflow-wrap: anywhere; }
.admin-empty { padding: 3rem; color: var(--text-muted); text-align: center; border: 1px dashed var(--border); border-radius: var(--radius); }

/* ============================================
   页脚
   ============================================ */
.footer {
  background: var(--navy-900);
  color: rgba(248, 250, 252, 0.6);
  padding: var(--space-xl) 0 var(--space-md);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: var(--space-sm);
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 0.9rem;
  color: rgba(248, 250, 252, 0.55);
  transition: color var(--transition);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-md);
  font-size: 0.85rem;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all var(--transition);
}

.footer-social a:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

/* ============================================
   滚动动画
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }
.reveal[data-delay="4"] { transition-delay: 0.4s; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   页面内 Hero (子页面)
   ============================================ */
.page-hero {
  position: relative;
  background: var(--navy-900);
  color: #fff;
  padding: calc(var(--nav-height) + var(--space-2xl)) 0 var(--space-xl);
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37, 99, 235, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.06) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(ellipse 70% 80% at 50% 50%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 50% 50%, #000 30%, transparent 100%);
}

.page-hero::after {
  content: "";
  position: absolute;
  top: -20%;
  left: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

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

.page-hero .section-eyebrow {
  color: var(--accent-light);
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
}

.page-hero p {
  font-size: 1.1rem;
  color: rgba(248, 250, 252, 0.6);
  max-width: 560px;
  line-height: 1.8;
}

/* ============================================
   CTA 横幅
   ============================================ */
.cta-banner {
  position: relative;
  background: var(--navy-900);
  color: #fff;
  text-align: center;
  padding: var(--space-xl) 0;
  overflow: hidden;
}

.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 100% at 50% 50%, var(--accent-glow), transparent 70%);
}

.cta-banner .container {
  position: relative;
  z-index: 2;
}

.cta-banner h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.cta-banner p {
  color: rgba(248, 250, 252, 0.65);
  font-size: 1.1rem;
  margin-bottom: var(--space-md);
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 968px) {
  .footer-top { grid-template-columns: 1fr 1fr; gap: var(--space-md); }
  .footer-brand { grid-column: 1 / -1; }
  .contact-wrap { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --space-2xl: 5rem;
    --space-xl: 4rem;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(16px);
    padding: var(--space-sm);
    gap: 4px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s ease;
  }

  .navbar--dark .nav-links {
    background: rgba(10, 22, 40, 0.98);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links a {
    padding: 14px 18px;
    font-size: 1rem;
  }

  .nav-cta {
    margin: var(--space-sm) 0 0;
    justify-content: center;
  }

  .nav-toggle {
    display: flex;
  }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-lg); }
  .stat-item:nth-child(2)::after { display: none; }
  .card-grid--2,
  .card-grid--3,
  .card-grid--4 { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--space-sm); }
  .form-row { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .stat-item::after { display: none !important; }
  .container { padding: 0 16px; }
}

/* ============================================
   语言切换按钮
   ============================================ */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: transparent;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}

.lang-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.navbar--dark .lang-toggle {
  color: rgba(248, 250, 252, 0.7);
  border-color: rgba(255, 255, 255, 0.15);
}

.navbar--dark .lang-toggle:hover {
  border-color: var(--accent-light);
  color: var(--accent-light);
  background: rgba(255, 255, 255, 0.06);
}

/* 导航右侧容器 */
.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

@media (max-width: 768px) {
  .lang-toggle {
    order: -1;
  }
  .nav-right {
    gap: 8px;
  }
  .admin-shell { padding: 1rem 0; }
  .admin-card { margin: 1rem auto; padding: 1.5rem; }
  .admin-header, .record-card__header { flex-direction: column; }
  .record-card__header { gap: .25rem; }
  .record-meta { grid-template-columns: 1fr; }
}