/* ============================================
   Greenshot 官网 - 全局样式
   设计系统：扁平现代专业
   配色基于 Logo（亮绿 + 深灰）
   ============================================ */

:root {
  /* 主色 - 基于 Logo 亮绿 */
  --color-primary: #9ACA3C;
  --color-primary-dark: #5B8C2A;
  --color-primary-darker: #4A7020;
  --color-primary-light: #C5E07D;
  --color-primary-tint: #F0F7E0;

  /* 中性色 - 基于 Logo 深灰 */
  --color-dark: #2E3239;
  --color-darker: #1F2328;
  --color-gray-900: #1F2328;
  --color-gray-700: #4A5568;
  --color-gray-500: #6B7280;
  --color-gray-300: #D1D5DB;
  --color-gray-200: #E5E7EB;
  --color-gray-100: #F3F4F6;
  --color-gray-50: #F7F8F5;

  /* 背景 */
  --bg-white: #FFFFFF;
  --bg-light: #F7F8F5;
  --bg-dark: #2E3239;

  /* 状态色 */
  --color-success: #28C840;
  --color-warning: #FEBC2E;
  --color-danger: #FF5F57;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 50px rgba(0,0,0,0.15);

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;

  /* 间距 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

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

  /* 容器 */
  --container-max: 1200px;
  --container-pad: 24px;

  /* 过渡 */
  --transition: 200ms ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

/* ===== 跳过导航（A11y） ===== */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  z-index: 9999;
  padding: 12px 20px;
  background: var(--color-dark);
  color: #fff;
  font-weight: 600;
  border-radius: 8px;
  text-decoration: none;
}
.skip-link:focus,
.skip-link:focus-visible {
  left: 8px;
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-gray-900);
  background: var(--bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; height: auto; }
a { color: var(--color-primary-dark); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-darker); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { padding: 0; margin: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 700; line-height: 1.25; color: var(--color-gray-900); letter-spacing: -0.01em; }
h1 { font-size: clamp(32px, 5vw, 48px); }
h2 { font-size: clamp(26px, 3.5vw, 36px); }
h3 { font-size: clamp(20px, 2.5vw, 24px); }
p { margin: 0 0 1em; }
code { font-family: var(--font-mono); background: var(--color-gray-100); padding: 2px 6px; border-radius: 4px; font-size: 0.9em; color: var(--color-primary-darker); }

/* ===== 容器 ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}
.container--narrow { max-width: 880px; }

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-200);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-brand { display: flex; align-items: center; gap: 10px;background: var(--color-darker);border-radius: 5px;}
.nav-brand img { height: 40px; width: auto; }
.nav-menu { display: flex; gap: 32px; align-items: center; }
.nav-menu a {
  color: var(--color-gray-700);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
  transition: color var(--transition);
}
.nav-menu a:hover, .nav-menu a.active { color: var(--color-primary-dark); }
.nav-menu a.active::after {
  content: '';
  position: absolute;
  bottom: -18px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
}
.nav-cta { margin-left: 16px; }
.nav-toggle { display: none; }

@media (max-width: 860px) {
  .nav-menu { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; background: #fff; border-bottom: 1px solid var(--color-gray-200); padding: 16px; gap: 16px; }
  .nav-menu.open { display: flex; }
  .nav-toggle { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 8px; background: var(--color-gray-100); }
  .nav-toggle svg { width: 22px; height: 22px; stroke: var(--color-gray-900); }
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  border: 2px solid transparent;
  line-height: 1.2;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-darker);
  border-color: var(--color-primary);
}
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 16px rgba(154,202,60,0.35); }
.btn-secondary {
  background: var(--color-darker);
  color: #fff;
  border-color: var(--color-darker);
}
.btn-secondary:hover { background: #000; border-color: #000; color: #fff; }
.btn-outline {
  background: transparent;
  color: var(--color-darker);
  border-color: var(--color-gray-300);
}
.btn-outline:hover { background: var(--color-gray-50); border-color: var(--color-darker); color: var(--color-darker); }
.btn-lg { padding: 16px 32px; font-size: 16px; }
.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn svg { width: 18px; height: 18px; }

/* ===== Hero 区域 ===== */
.hero {
  position: relative;
  padding: 80px 0 96px;
  background: linear-gradient(180deg, var(--color-primary-tint) 0%, #fff 100%);
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(154,202,60,0.18) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 0;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -300px; left: -100px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(154,202,60,0.10) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 0;
}
.hero .container { position: relative; z-index: 1; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(154,202,60,0.18);
  color: var(--color-primary-darker);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary-dark); }
.hero h1 { margin-bottom: 20px; }
.hero h1 .accent { color: var(--color-primary-dark); }
.hero-sub {
  font-size: 18px;
  color: var(--color-gray-700);
  margin-bottom: 32px;
  max-width: 540px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 32px; }
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  font-size: 14px;
  color: var(--color-gray-500);
}
.hero-meta-item { display: inline-flex; align-items: center; gap: 6px; }
.hero-meta-item svg { width: 16px; height: 16px; fill: var(--color-primary-dark); }
.hero-illustration { position: relative; }

@media (max-width: 860px) {
  .hero { padding: 48px 0 64px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
}

/* ===== Section 通用 ===== */
.section { padding: 80px 0; }
.section-light { background: var(--bg-light); }
.section-dark { background: var(--color-dark); color: #fff; }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-dark p { color: rgba(255,255,255,0.78); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-head .eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary-dark);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}
.section-head p { font-size: 17px; color: var(--color-gray-700); margin-top: 12px; }
.section-dark .section-head p { color: rgba(255,255,255,0.75); }

/* ===== 使用场景 / 卡片网格 ===== */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 860px) {
  .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; }
}

.card {
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
}
.card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--color-primary-tint);
  color: var(--color-primary-darker);
  margin-bottom: 16px;
}
.card-icon svg { width: 24px; height: 24px; stroke: currentColor; fill: none; stroke-width: 2; }
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card p { font-size: 14px; color: var(--color-gray-700); margin: 0; }

/* ===== 数据指标条 ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 40px;
  background: var(--color-darker);
  border-radius: var(--radius-xl);
  color: #fff;
}
.stat-item { text-align: center; }
.stat-num {
  display: block;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 6px;
}
.stat-label { font-size: 13px; color: rgba(255,255,255,0.65); }
@media (max-width: 860px) { .stats { grid-template-columns: repeat(2, 1fr); padding: 24px; } }

/* ===== 功能特性 block ===== */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}
.feature-row.reverse { direction: rtl; }
.feature-row.reverse > * { direction: ltr; }
.feature-content h3 { font-size: 28px; margin-bottom: 12px; }
.feature-content .eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary-dark);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}
.feature-content p { font-size: 16px; color: var(--color-gray-700); margin-bottom: 20px; }
.feature-list { display: flex; flex-direction: column; gap: 12px; }
.feature-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 15px; color: var(--color-gray-700); }
.feature-list .check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary-tint);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.feature-list .check svg { width: 12px; height: 12px; stroke: var(--color-primary-darker); stroke-width: 3; fill: none; }
.feature-visual {
  background: linear-gradient(135deg, var(--color-primary-tint) 0%, #fff 100%);
  border-radius: var(--radius-xl);
  padding: 40px;
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-gray-200);
}
.feature-visual svg { max-width: 100%; max-height: 320px; }
@media (max-width: 860px) {
  .feature-row { grid-template-columns: 1fr; gap: 32px; margin-bottom: 48px; }
  .feature-row.reverse { direction: ltr; }
}

/* ===== 截图工具流程图 ===== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: var(--color-gray-200);
  z-index: 0;
}
.step { text-align: center; position: relative; z-index: 1; }
.step-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--color-primary);
  color: var(--color-primary-darker);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
}
.step h4 { font-size: 16px; margin-bottom: 6px; }
.step p { font-size: 13px; color: var(--color-gray-700); margin: 0; }
@media (max-width: 860px) {
  .steps { grid-template-columns: 1fr; }
  .steps::before { display: none; }
}

/* ===== 表格 ===== */
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--color-gray-200); }
.data-table { width: 100%; border-collapse: collapse; background: #fff; }
.data-table th, .data-table td { padding: 14px 18px; text-align: left; font-size: 14px; border-bottom: 1px solid var(--color-gray-200); }
.data-table th { background: var(--color-gray-50); font-weight: 600; color: var(--color-gray-900); }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--color-gray-50); }
.data-table .version-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  background: var(--color-primary-tint);
  color: var(--color-primary-darker);
}
.data-table .version-tag.latest { background: var(--color-primary); color: #fff; }

/* ===== 标签 / Badge ===== */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  background: var(--color-gray-100);
  color: var(--color-gray-700);
}
.badge-success { background: rgba(40,200,64,0.15); color: #1A7A2A; }
.badge-primary { background: var(--color-primary-tint); color: var(--color-primary-darker); }
.badge-dark { background: var(--color-darker); color: #fff; }

/* ===== 下载弹窗 ===== */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(15,18,21,0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 250ms ease, visibility 250ms ease;
}
.modal.open { opacity: 1; visibility: visible; }
.modal-dialog {
  background: #fff;
  border-radius: var(--radius-xl);
  max-width: 880px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: translateY(20px);
  transition: transform 250ms ease;
  box-shadow: var(--shadow-xl);
}
.modal.open .modal-dialog { transform: translateY(0); }
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 32px;
  border-bottom: 1px solid var(--color-gray-200);
}
.modal-header h3 { font-size: 20px; margin: 0; }
.modal-close {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-500);
  transition: all var(--transition);
}
.modal-close:hover { background: var(--color-gray-100); color: var(--color-darker); }
.modal-close svg { width: 20px; height: 20px; stroke: currentColor; stroke-width: 2; fill: none; }
.modal-body { padding: 32px; }
.download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}
@media (max-width: 720px) {
  .download-grid { grid-template-columns: 1fr; }
  .modal-header, .modal-body { padding: 20px; }
}
.download-card {
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color var(--transition);
}
.download-card:hover { border-color: var(--color-primary); }
.download-card .platform {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.download-card .platform svg { width: 28px; height: 28px; fill: var(--color-darker); }
.download-card .platform-name { font-size: 18px; font-weight: 700; }
.download-card .platform-arch { font-size: 12px; color: var(--color-gray-500); }
.download-card .meta { font-size: 13px; color: var(--color-gray-500); margin: 4px 0; }
.download-card .meta strong { color: var(--color-gray-900); }
.download-card .btn { width: 100%; margin-top: 16px; }

.qrcode-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding: 24px;
  background: var(--color-gray-50);
  border-radius: var(--radius-lg);
  margin-top: 8px;
}
@media (max-width: 720px) { .qrcode-row { grid-template-columns: 1fr; } }
.qrcode-item { display: flex; gap: 16px; align-items: center; }
.qrcode-img {
  width: 150px;
  height: 150px;
  border-radius: var(--radius-md);
  background: #fff;
  padding: 8px;
  border: 1px solid var(--color-gray-200);
  flex-shrink: 0;
}
.qrcode-img svg, .qrcode-img img { width: 100%; height: 100%; }
.qrcode-info h4 { font-size: 15px; margin-bottom: 4px; }
.qrcode-info p { font-size: 13px; color: var(--color-gray-500); margin: 0; }
.qrcode-info .scan-tip { display: inline-flex; align-items: center; gap: 4px; margin-top: 8px; font-size: 12px; color: var(--color-primary-darker); font-weight: 600; }
.qrcode-info .scan-tip svg { width: 14px; height: 14px; fill: currentColor; }

.modal-footer {
  padding: 16px 32px 24px;
  font-size: 12px;
  color: var(--color-gray-500);
  text-align: center;
  border-top: 1px solid var(--color-gray-200);
}

/* ===== 快捷键表 ===== */
.shortcut-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 720px) { .shortcut-grid { grid-template-columns: 1fr; } }
.shortcut-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: #fff;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  transition: border-color var(--transition);
}
.shortcut-item:hover { border-color: var(--color-primary); }
.shortcut-label { font-size: 15px; color: var(--color-gray-900); }
.shortcut-keys { display: inline-flex; gap: 4px; }
.kbd {
  display: inline-block;
  padding: 4px 10px;
  background: var(--color-gray-100);
  border: 1px solid var(--color-gray-300);
  border-bottom-width: 2px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-gray-900);
  line-height: 1;
}

/* ===== FAQ 折叠 ===== */
.faq-item {
  border-bottom: 1px solid var(--color-gray-200);
  padding: 20px 0;
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-gray-900);
  padding: 0;
  gap: 16px;
}
.faq-q .toggle-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-gray-100);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.faq-q .toggle-icon svg { width: 12px; height: 12px; stroke: currentColor; stroke-width: 3; fill: none; }
.faq-item.open .toggle-icon { background: var(--color-primary); color: #fff; transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 300ms ease, padding 300ms ease; }
.faq-item.open .faq-a { max-height: 400px; padding-top: 12px; }
.faq-a p { font-size: 15px; color: var(--color-gray-700); margin: 0; }

/* ===== CTA 区域 ===== */
.cta {
  background: linear-gradient(135deg, var(--color-darker) 0%, #1A1D22 100%);
  border-radius: var(--radius-xl);
  padding: 64px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(154,202,60,0.18) 0%, transparent 70%);
  border-radius: 50%;
}
.cta-content { position: relative; z-index: 1; }
.cta h2 { color: #fff; margin-bottom: 12px; }
.cta p { color: rgba(255,255,255,0.75); max-width: 600px; margin: 0 auto 28px; font-size: 17px; }
.cta-actions { display: inline-flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
@media (max-width: 720px) { .cta { padding: 40px 24px; } }

/* ===== 团队/Logo/时间线 ===== */
.timeline { position: relative; max-width: 800px; margin: 0 auto; padding-left: 32px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--color-gray-200);
}
.timeline-item { position: relative; padding-bottom: 32px; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -28px;
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--color-primary);
}
.timeline-year { font-size: 13px; color: var(--color-primary-darker); font-weight: 700; margin-bottom: 4px; }
.timeline-title { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.timeline-desc { font-size: 14px; color: var(--color-gray-700); }

/* ===== 团队 ===== */
.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 720px) { .team-grid { grid-template-columns: 1fr; } }
.team-card { text-align: center; padding: 32px 20px; background: #fff; border: 1px solid var(--color-gray-200); border-radius: var(--radius-lg); }
.team-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--color-primary-tint);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary-darker);
  margin-bottom: 16px;
  border: 3px solid #fff;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.team-name { font-size: 17px; margin-bottom: 4px; }
.team-role { font-size: 13px; color: var(--color-gray-500); margin-bottom: 12px; }
.team-bio { font-size: 14px; color: var(--color-gray-700); }

/* ===== Footer ===== */
.site-footer {
  background: var(--color-darker);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-brand img { height: 36px; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.6; }
.footer-col h4 { color: #fff; font-size: 14px; font-weight: 600; margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.05em; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { color: rgba(255,255,255,0.65); font-size: 14px; transition: color var(--transition); }
.footer-col a:hover { color: var(--color-primary); }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}
.footer-bottom a { color: rgba(255,255,255,0.7); }
.footer-bottom a:hover { color: var(--color-primary); }

/* ===== 滚动到顶部 ===== */
.to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-darker);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 50;
}
.to-top.show { opacity: 1; visibility: visible; }
.to-top:hover { background: var(--color-primary-dark); color: #fff; transform: translateY(-2px); }
.to-top svg { width: 18px; height: 18px; fill: currentColor; }

/* ===== 页面内页头 ===== */
.page-header {
  padding: 64px 0 48px;
  background: linear-gradient(180deg, var(--color-primary-tint) 0%, #fff 100%);
  text-align: center;
}
.page-header h1 { margin-bottom: 12px; }
.page-header p { font-size: 17px; color: var(--color-gray-700); max-width: 720px; margin: 0 auto; }
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-gray-500);
  margin-bottom: 16px;
}
.breadcrumb a { color: var(--color-gray-500); }
.breadcrumb a:hover { color: var(--color-primary-dark); }

/* ===== 通用 utilities ===== */
.text-center { text-align: center; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mt-8 { margin-top: 32px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mb-8 { margin-bottom: 32px; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

/* ===== 打印样式 ===== */
@media print {
  .site-header, .site-footer, .to-top, .nav-cta { display: none; }
  body { color: #000; background: #fff; }
}

/* ===== 可访问性 - 减少动效 ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* ===== 焦点样式 ===== */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}
button:focus-visible, a:focus-visible { outline-offset: 4px; }