/* Flow Launcher - 全局样式 */
:root {
  --primary: #6C5CE7;
  --primary-hover: #8B7CF6;
  --primary-dark: #4834D4;
  --primary-light: rgba(108,92,231,0.08);
  --bg: #f5f6fa;
  --white: #ffffff;
  --text: #1a1a2e;
  --text-secondary: #555;
  --text-light: #888;
  --border: #e0e3ea;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-hover: 0 4px 20px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --card-bg: #ffffff;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { text-decoration: none; color: var(--primary); transition: color 0.2s; }
a:hover { color: var(--primary-hover); }

/* ========== 顶部导航 ========== */
.navbar {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}
.nav-logo svg {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 4px;
}
.nav-links a {
  display: block;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  transition: all 0.2s;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  background: var(--primary-light);
}

/* ========== 主内容 ========== */
.main { flex: 1; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== Hero 区域 ========== */
.hero {
  background: linear-gradient(135deg, #6C5CE7 0%, #4834D4 40%, #2D1B69 100%);
  color: var(--white);
  padding: 100px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.06) 0%, transparent 60%);
}
.hero h1 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 16px;
  position: relative;
}
.hero p {
  font-size: 18px;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto 36px;
  position: relative;
}
.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  position: relative;
  flex-wrap: wrap;
}

/* ========== 统计条 ========== */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
  margin-top: 48px;
  position: relative;
}
.stat-item {
  text-align: center;
}
.stat-item .num {
  font-size: 36px;
  font-weight: 700;
}
.stat-item .lbl {
  font-size: 13px;
  opacity: 0.75;
  margin-top: 4px;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 32px;
  border-radius: 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.25s;
}
.btn-primary {
  background: var(--white);
  color: var(--primary);
}
.btn-primary:hover {
  background: #e8e6ff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.5);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--white);
  transform: translateY(-2px);
}
.btn-primary-solid {
  background: var(--primary);
  color: var(--white);
}
.btn-primary-solid:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

/* ========== 区块 ========== */
.section {
  padding: 72px 0;
}
.section-title {
  text-align: center;
  margin-bottom: 48px;
}
.section-title h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.section-title p {
  color: var(--text-light);
  font-size: 15px;
}

/* ========== 特性卡片 ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 32px 24px;
  box-shadow: var(--shadow);
  text-align: center;
  transition: all 0.3s;
  border: 1px solid transparent;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(108,92,231,0.15);
}
.feature-card .icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}
.feature-card .icon svg {
  width: 32px;
  height: 32px;
}
.feature-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}
.feature-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
}

/* ========== 截图展示 (CSS模拟) ========== */
.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}
.screenshot-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s;
}
.screenshot-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
.screenshot-placeholder {
  width: 100%;
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: rgba(255,255,255,0.9);
  font-size: 16px;
  font-weight: 600;
}
.sp-gradient-1 { background: linear-gradient(135deg, #2D1B69 0%, #4834D4 50%, #6C5CE7 100%); }
.sp-gradient-2 { background: linear-gradient(135deg, #1a1a2e 0%, #2d2d4e 50%, #3d3d6e 100%); }
.sp-gradient-3 { background: linear-gradient(135deg, #4834D4 0%, #6C5CE7 50%, #8B7CF6 100%); }
.screenshot-placeholder .mock-search {
  background: rgba(255,255,255,0.15);
  border-radius: 8px;
  padding: 10px 16px;
  margin-top: 12px;
  font-size: 14px;
  min-width: 60%;
  text-align: center;
  backdrop-filter: blur(4px);
}
.screenshot-card .caption {
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  text-align: center;
}

/* ========== 下载页 ========== */
.download-section {
  max-width: 1100px;
  margin: 0 auto;
}

.download-card-hero {
  background: linear-gradient(135deg, #6C5CE7 0%, #4834D4 100%);
  color: #fff;
  border-radius: var(--radius);
  padding: 56px 48px;
  box-shadow: 0 6px 32px rgba(108,92,231,0.35);
  text-align: center;
  margin-bottom: 40px;
}
.download-card-hero .version {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}
.download-card-hero .meta {
  color: rgba(255,255,255,0.8);
  font-size: 15px;
  margin-bottom: 28px;
}
.download-card-hero .btn {
  font-size: 18px;
  padding: 14px 48px;
}
.download-card-hero .btn-primary-solid {
  background: #fff;
  color: #6C5CE7;
}
.download-card-hero .btn-primary-solid:hover {
  background: #e8e6ff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}
.download-card-hero .download-info {
  margin-top: 32px;
}
.download-card-hero .info-item {
  background: rgba(255,255,255,0.92);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.download-card-hero .info-item .label {
  color: #6C5CE7;
  font-weight: 500;
}
.download-card-hero .info-item .value {
  color: #2D1B69;
  font-weight: 700;
}

.download-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow);
  text-align: center;
  margin-bottom: 32px;
}
.download-card .version {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.download-card .meta {
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 24px;
}
.download-card .btn {
  font-size: 18px;
  padding: 14px 48px;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.download-grid .download-card {
  margin-bottom: 0;
  padding: 28px 24px;
}
.download-grid .download-card .version {
  font-size: 20px;
}
.download-grid .download-card .btn {
  font-size: 15px;
  padding: 10px 28px;
}

.download-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 32px;
}
.download-info .info-item {
  background: var(--card-bg);
  border-radius: var(--radius-sm);
  padding: 20px;
  box-shadow: var(--shadow);
  text-align: center;
}
.info-item .label {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 6px;
}
.info-item .value {
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
}

/* ========== 功能详情页 ========== */
.feature-detail {
  display: flex;
  align-items: center;
  gap: 48px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.feature-detail.reverse {
  flex-direction: row-reverse;
}
.feature-detail .text {
  flex: 1;
  min-width: 280px;
}
.feature-detail .text h3 {
  font-size: 24px;
  margin-bottom: 14px;
}
.feature-detail .text p {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 15px;
}
.feature-detail .image {
  flex: 1;
  min-width: 280px;
}
.feature-detail .image .img-placeholder {
  width: 100%;
  min-height: 240px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 60px;
  color: rgba(255,255,255,0.8);
}

/* ========== 使用指南页 ========== */
.guide-step {
  display: flex;
  gap: 32px;
  margin-bottom: 40px;
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  align-items: flex-start;
}
.guide-step .step-num {
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  flex-shrink: 0;
}
.guide-step .step-content {
  flex: 1;
}
.guide-step .step-content h3 {
  font-size: 20px;
  margin-bottom: 10px;
}
.guide-step .step-content p {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 15px;
  margin-bottom: 12px;
}
.guide-step .step-content .tip-box {
  background: #f0eeff;
  border-left: 3px solid var(--primary);
  padding: 10px 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-top: 12px;
  font-size: 14px;
  color: var(--primary-dark);
}

/* ========== 页脚 ========== */
.footer {
  background: #1a1a2e;
  color: rgba(255,255,255,0.6);
  text-align: center;
  padding: 28px 24px;
  font-size: 13px;
  margin-top: auto;
}
.footer a {
  color: rgba(255,255,255,0.8);
}
.footer a:hover {
  color: var(--white);
}

/* ========== CTA 区域 ========== */
.cta-section {
  background: linear-gradient(135deg, #6C5CE7 0%, #4834D4 100%);
  color: var(--white);
  padding: 64px 0;
  text-align: center;
}
.cta-section h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
}
.cta-section p {
  font-size: 16px;
  opacity: 0.9;
  margin-bottom: 32px;
}

/* ========== 版本对比表 ========== */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.compare-table th,
.compare-table td {
  padding: 16px 20px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.compare-table th {
  background: var(--primary);
  color: var(--white);
  font-weight: 600;
  font-size: 15px;
}
.compare-table th:first-child {
  background: #2D1B69;
}
.compare-table td:first-child {
  font-weight: 600;
  color: var(--text);
  text-align: left;
}
.compare-table tr:last-child td {
  border-bottom: none;
}

/* ========== 响应式 ========== */
/* ========== 下载弹窗模态框 ========== */
.dl-modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.55);
  z-index: 9999;
  justify-content: center;
  align-items: center;
}
.dl-modal-overlay.active {
  display: flex;
}
.dl-modal {
  background: #fff;
  border-radius: 16px;
  padding: 36px 28px 28px;
  text-align: center;
  max-width: 420px;
  width: 92%;
  box-shadow: 0 16px 48px rgba(0,0,0,0.25);
  position: relative;
  animation: modal-fade-in 0.25s ease;
}
@keyframes modal-fade-in {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.dl-modal .qr-img {
  width: 150px; height: 150px;
  margin: 0 auto 18px;
  display: block;
  border-radius: 10px;
  border: 2px solid #e0e3ea;
  animation: qr-pulse 2.2s ease-in-out infinite;
}
@keyframes qr-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(108,92,231,0.45); }
  50%      { box-shadow: 0 0 0 10px rgba(108,92,231,0); }
}
.dl-modal h3 {
  font-size: 20px;
  margin-bottom: 10px;
  color: #1a1a2e;
  font-weight: 700;
}
.dl-modal .qr-tip {
  color: #666;
  font-size: 14px;
  margin-bottom: 6px;
  line-height: 1.7;
}
.dl-modal .qr-warn {
  color: #e67e22;
  font-size: 13px;
  margin-bottom: 18px;
  line-height: 1.6;
}
.dl-modal .modal-close {
  position: absolute;
  top: 12px; right: 16px;
  background: none; border: none;
  font-size: 24px; cursor: pointer;
  color: #999; line-height: 1;
  transition: color 0.2s;
}
.dl-modal .modal-close:hover { color: #333; }
.dl-modal .modal-btn {
  display: inline-block;
  padding: 10px 28px;
  background: #6C5CE7;
  color: #fff;
  border-radius: 24px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  margin: 0 6px;
}
.dl-modal .modal-btn:hover {
  background: #4834D4;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(108,92,231,0.3);
}
.dl-modal .modal-btn.secondary {
  background: #fff;
  color: #6C5CE7;
  border: 1.5px solid #6C5CE7;
}
.dl-modal .modal-btn.secondary:hover {
  background: #f5f3ff;
}

/* 下载页内嵌二维码 */
.inline-qr {
  text-align: center;
  margin-top: 20px;
}
.inline-qr .qr-img-inline {
  width: 150px; height: 150px;
  border-radius: 10px;
  border: 2px solid rgba(255,255,255,0.3);
  animation: qr-pulse-light 2.2s ease-in-out infinite;
}
@keyframes qr-pulse-light {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,255,255,0.5); }
  50%      { box-shadow: 0 0 0 10px rgba(255,255,255,0); }
}
.inline-qr .qr-label {
  color: rgba(255,255,255,0.75);
  font-size: 13px;
  margin-top: 8px;
}

/* ========== 首页 Hero 网盘按钮 ========== */
.btn-dl-quark {
  background: var(--white);
  color: var(--primary);
  font-size: 18px;
  padding: 14px 48px;
  border-radius: 28px;
  font-weight: 700;
  box-shadow: 0 4px 18px rgba(0,0,0,0.12);
  transition: all 0.25s;
}
.btn-dl-quark:hover {
  background: #e8e6ff;
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.2);
}
.btn-dl-baidu {
  background: transparent;
  color: rgba(255,255,255,0.85);
  border: 2px solid rgba(255,255,255,0.35);
  font-size: 16px;
  padding: 12px 32px;
  border-radius: 28px;
  font-weight: 600;
  transition: all 0.25s;
}
.btn-dl-baidu:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--white);
  color: var(--white);
  transform: translateY(-2px);
}

/* ========== 下载页 Hero ========== */
.download-hero {
  background: linear-gradient(135deg, #6C5CE7 0%, #4834D4 45%, #2D1B69 100%);
  color: var(--white);
  padding: 72px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.download-hero::before {
  content: "";
  position: absolute;
  top: -60%;
  left: -60%;
  width: 220%;
  height: 220%;
  background: radial-gradient(circle at 25% 40%, rgba(255,255,255,0.07) 0%, transparent 55%),
              radial-gradient(circle at 75% 60%, rgba(255,255,255,0.05) 0%, transparent 55%);
}
.download-hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.18);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 20px;
  padding: 5px 18px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 18px;
  position: relative;
}
.download-hero h1 {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
}
.download-hero p {
  font-size: 16px;
  opacity: 0.85;
  max-width: 520px;
  margin: 0 auto;
  position: relative;
}
/* 装饰圆形 */
.download-hero-decor {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.decor-circle {
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.12);
}
.decor-circle.c1 {
  width: 180px; height: 180px;
  top: -40px; left: -30px;
}
.decor-circle.c2 {
  width: 120px; height: 120px;
  top: 60px; right: 10%;
}
.decor-circle.c3 {
  width: 60px; height: 60px;
  bottom: 20px; right: 25%;
}

/* ========== 下载卡片增强 ========== */
.download-card-hero {
  background: linear-gradient(145deg, #5A4ED6 0%, #4834D4 40%, #3A28C0 100%);
  color: #fff;
  border-radius: 20px;
  padding: 60px 52px;
  box-shadow: 0 12px 48px rgba(108,92,231,0.3),
              0 2px 8px rgba(45,27,105,0.25);
  text-align: center;
  margin-bottom: 48px;
  position: relative;
  overflow: hidden;
}
.download-card-hero::before {
  content: "";
  position: absolute;
  width: 320px; height: 320px;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
  top: -100px; right: -80px;
  border-radius: 50%;
}
.download-card-hero::after {
  content: "";
  position: absolute;
  width: 200px; height: 200px;
  background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
  bottom: -60px; left: -40px;
  border-radius: 50%;
}
.dl-card-icon {
  width: 80px; height: 80px;
  margin: 0 auto 20px;
  position: relative;
  z-index: 1;
}
.dl-card-icon svg {
  width: 80px; height: 80px;
}
.download-card-hero .version {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
  position: relative;
  z-index: 1;
}
.download-card-hero .meta {
  color: rgba(255,255,255,0.78);
  font-size: 14px;
  margin-bottom: 36px;
  position: relative;
  z-index: 1;
}

/* 下载按钮组 */
.dl-btn-group {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
  margin-bottom: 32px;
}
.btn-dl-quark-hero {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  color: #5A4ED6;
  font-size: 17px;
  font-weight: 700;
  padding: 16px 44px;
  border-radius: 30px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  transition: all 0.25s;
  position: relative;
}
.btn-dl-quark-hero:hover {
  background: #f0eeff;
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.22);
}
.btn-badge {
  position: absolute;
  top: -10px; right: -8px;
  background: linear-gradient(135deg, #FF6B6B, #EE5A24);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 10px;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 8px rgba(238,90,36,0.35);
}
.btn-dl-baidu-hero {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.9);
  font-size: 15px;
  font-weight: 600;
  padding: 14px 34px;
  border-radius: 30px;
  border: 1.5px solid rgba(255,255,255,0.3);
  transition: all 0.25s;
}
.btn-dl-baidu-hero:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.5);
  transform: translateY(-2px);
}

/* 二维码展示区 */
.qr-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
  margin-bottom: 32px;
}
.qr-frame {
  background: rgba(255,255,255,0.92);
  border-radius: 16px;
  padding: 10px;
  box-shadow: 0 4px 18px rgba(0,0,0,0.12);
  flex-shrink: 0;
}
.qr-frame .qr-img-inline {
  display: block;
  width: 130px; height: 130px;
  border-radius: 10px;
  animation: qr-pulse-light 2.4s ease-in-out infinite;
}
.qr-info {
  text-align: left;
  max-width: 260px;
}
.qr-title {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.qr-desc {
  font-size: 13px;
  color: rgba(255,255,255,0.78);
  line-height: 1.6;
  margin-bottom: 6px;
}
.qr-note {
  font-size: 12px;
  color: rgba(255,255,255,0.55);
  font-style: italic;
}

/* 快速信息条 */
.dl-quick-info {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.15);
}
.quick-item {
  color: rgba(255,255,255,0.75);
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}
.quick-icon {
  color: #00E676;
  font-weight: 700;
  font-size: 15px;
}

/* ========== 系统要求美化 ========== */
.sys-req-section {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}
.sys-req-section h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 28px;
}
.sys-req-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.sys-req-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px 20px;
  box-shadow: var(--shadow);
  text-align: center;
  transition: all 0.3s;
  border: 1px solid var(--border);
}
.sys-req-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(108,92,231,0.2);
}
.sr-icon {
  font-size: 32px;
  margin-bottom: 10px;
}
.sr-label {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 6px;
  font-weight: 500;
}
.sr-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .hero { padding: 60px 0 48px; }
  .hero h1 { font-size: 32px; }
  .hero p { font-size: 15px; }
  .section { padding: 48px 0; }
  .section-title h2 { font-size: 26px; }
  .nav-inner { flex-direction: column; height: auto; padding: 12px 24px; gap: 8px; }
  .nav-links { flex-wrap: wrap; justify-content: center; }
  .download-card { padding: 24px; }
  .download-card-hero { padding: 40px 24px; }
  .download-card-hero .version { font-size: 26px; }
  .features-grid { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
  .guide-step { flex-direction: column; }
  .stats-bar { gap: 24px; }
  .stat-item .num { font-size: 28px; }
  .btn-dl-quark { font-size: 16px; padding: 12px 36px; }
  .btn-dl-baidu { font-size: 14px; padding: 10px 24px; }
  .download-hero { padding: 48px 0 40px; }
  .download-hero h1 { font-size: 30px; }
  .dl-btn-group { flex-direction: column; align-items: center; }
  .btn-dl-quark-hero { font-size: 16px; padding: 14px 36px; }
  .btn-dl-baidu-hero { font-size: 14px; padding: 12px 28px; }
  .qr-display { flex-direction: column; }
  .qr-info { text-align: center; }
  .sys-req-grid { grid-template-columns: repeat(2, 1fr); }
  .dl-quick-info { gap: 16px; }
}