/* ============================================================
   放量预警 (SurgeRadar) 官方网站样式规范 - Modern Dark Fintech
   ============================================================ */

:root {
  --bg-main: #07090e;
  --bg-card: #0d121d;
  --bg-card-hover: #121826;
  --bg-surface: #141b2a;
  
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.14);
  --border-focus: #38bdf8;

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --brand-cyan: #38bdf8;
  --brand-blue: #2563eb;
  --brand-glow: rgba(56, 189, 248, 0.25);

  --stock-up: #f43f5e;
  --stock-up-bg: rgba(244, 63, 94, 0.12);
  --stock-down: #10b981;
  --stock-down-bg: rgba(16, 185, 129, 0.12);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --container-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-main);
  color: var(--text-main);
}

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(37, 99, 235, 0.12) 0%, transparent 45%),
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px, 48px 48px;
  -webkit-font-smoothing: antialiased;
}

.font-mono {
  font-family: var(--font-mono);
  font-feature-settings: "tnum" 1;
}

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

.container-sm {
  max-width: 860px;
}

/* 顶部公告条 */
.announcement-bar {
  background: rgba(15, 23, 42, 0.95);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 13px;
  padding: 8px 0;
  position: relative;
  z-index: 50;
}

.announcement-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.badge-pill {
  background: rgba(56, 189, 248, 0.15);
  color: var(--brand-cyan);
  padding: 2px 8px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.announcement-text {
  color: var(--text-muted);
}

.announcement-text strong {
  color: var(--text-main);
}

.announcement-link {
  color: var(--brand-cyan);
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.2s;
}

.announcement-link:hover {
  text-decoration: underline;
}

/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(7, 9, 14, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-img {
  border-radius: 8px;
  display: block;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.3px;
}

.brand-en {
  font-size: 12px;
  color: var(--brand-cyan);
  font-weight: 600;
  margin-left: 4px;
}

.brand-sub {
  font-size: 11px;
  color: var(--text-dim);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-item {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-item:hover {
  color: var(--brand-cyan);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.market-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 9999px;
  font-size: 12px;
  color: var(--stock-down);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--stock-down);
  box-shadow: 0 0 8px var(--stock-down);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  border: none;
  line-height: 1;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 15px;
  border-radius: var(--radius-md);
}

.btn-primary {
  background: linear-gradient(135deg, #0ea5e9, #2563eb);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #38bdf8, #1d4ed8);
  box-shadow: 0 6px 24px rgba(14, 165, 233, 0.45);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid var(--border-light);
  gap: 8px;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-1px);
}

.btn-block {
  width: 100%;
}

.download-main-btn {
  gap: 12px;
  text-align: left;
}

.btn-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.btn-copy {
  display: flex;
  flex-direction: column;
}

.btn-title {
  font-size: 15px;
  font-weight: 700;
}

.btn-meta {
  font-size: 11px;
  opacity: 0.8;
  font-family: var(--font-mono);
}

.btn-arrow {
  width: 18px;
  height: 18px;
  transition: transform 0.2s;
}

.btn-secondary:hover .btn-arrow {
  transform: translateX(3px);
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: 80px 0 100px;
  overflow: hidden;
}

.glow-bg {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 1;
}

.top-glow {
  top: -80px;
  left: 20%;
  width: 500px;
  height: 350px;
  background: rgba(14, 165, 233, 0.15);
}

.right-glow {
  top: 150px;
  right: -100px;
  width: 600px;
  height: 450px;
  background: rgba(244, 63, 94, 0.08);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.badge-tech {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 9999px;
  font-size: 13px;
  color: var(--brand-cyan);
  margin-bottom: 24px;
}

.pulse-icon {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--brand-cyan);
  box-shadow: 0 0 10px var(--brand-cyan);
}

.hero-title {
  font-size: 48px;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -1.2px;
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 30%, #38bdf8 70%, #f43f5e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 580px;
}

.hero-desc strong {
  color: var(--text-main);
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.hero-stats-row {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-num small {
  font-size: 14px;
  color: var(--brand-cyan);
  margin-left: 2px;
}

.stat-lbl {
  font-size: 12px;
  color: var(--text-dim);
}

.stat-sep {
  width: 1px;
  height: 32px;
  background: var(--border-subtle);
}

/* 终端模拟视窗卡片 */
.terminal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05);
  overflow: hidden;
}

.terminal-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: #0a0e16;
  border-bottom: 1px solid var(--border-subtle);
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot.close { background-color: #ef4444; }
.dot.min { background-color: #f59e0b; }
.dot.max { background-color: #10b981; }

.terminal-title {
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

.terminal-clock {
  font-size: 12px;
  color: var(--brand-cyan);
}

.terminal-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* 预警触发小卡 */
.alert-trigger-box {
  background: var(--bg-surface);
  border: 1px solid rgba(244, 63, 94, 0.35);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: 0 0 20px rgba(244, 63, 94, 0.1);
}

.alert-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.alert-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 700;
}

.tag-l2 {
  background: var(--stock-up-bg);
  color: var(--stock-up);
  border: 1px solid rgba(244, 63, 94, 0.4);
}

.beacon {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--stock-up);
  box-shadow: 0 0 6px var(--stock-up);
  animation: beacon-pulse 1.2s infinite;
}

@keyframes beacon-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(1.4); }
}

.alert-code {
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
}

.alert-time {
  font-size: 12px;
  color: var(--text-dim);
}

.alert-ratio-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  margin-bottom: 12px;
  padding: 10px;
  background: rgba(0, 0, 0, 0.25);
  border-radius: var(--radius-sm);
}

.ratio-val, .ratio-benchmark, .ratio-current {
  display: flex;
  flex-direction: column;
}

.ratio-label, .bench-label, .curr-label {
  font-size: 11px;
  color: var(--text-dim);
  margin-bottom: 2px;
}

.ratio-num {
  font-size: 20px;
  font-weight: 800;
}

.bench-val, .curr-val {
  font-size: 13px;
  font-weight: 600;
}

.text-up { color: var(--stock-up); }
.text-down { color: var(--stock-down); }

.alert-reasons {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.reason-tag {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 3px;
  border: 1px solid var(--border-subtle);
}

/* 分时模拟小柱图 */
.mini-chart-card {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px;
}

.mini-chart-title {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-dim);
  margin-bottom: 10px;
}

.bars-container {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 54px;
}

.m-bar {
  flex: 1;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 1px;
  transition: height 0.3s;
}

.m-bar.surge {
  background: var(--stock-up);
  box-shadow: 0 0 6px rgba(244, 63, 94, 0.5);
}

/* 终端流水日志 */
.terminal-feed {
  background: #05070a;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 10px;
  font-size: 11px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.feed-line {
  color: var(--text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.feed-time {
  color: #475569;
  margin-right: 6px;
}

.feed-line.highlight {
  color: #38bdf8;
}

/* 通用 Section 规范 */
.section {
  padding: 100px 0;
  position: relative;
}

.section-dark {
  background: rgba(10, 14, 22, 0.7);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section-header {
  margin-bottom: 56px;
}

.text-center {
  text-align: center;
}

.section-tag {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--brand-cyan);
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.8px;
  color: #ffffff;
  margin-bottom: 16px;
}

.section-sub {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

/* 6 因子网格 */
.factors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.factor-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  position: relative;
  transition: all 0.25s ease;
}

.factor-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-light);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.factor-card-primary {
  border-color: rgba(56, 189, 248, 0.4);
  background: linear-gradient(180deg, rgba(56, 189, 248, 0.05) 0%, var(--bg-card) 100%);
}

.factor-weight {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 18px;
  font-weight: 700;
  color: var(--brand-cyan);
}

.factor-icon {
  font-size: 32px;
  margin-bottom: 16px;
}

.factor-title {
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
}

.factor-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.factor-desc strong {
  color: var(--brand-cyan);
}

/* 2列网格 */
.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
}

.align-center {
  align-items: center;
}

/* 3 级预警堆叠 */
.levels-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 32px;
}

.level-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: border-color 0.2s;
}

.box-l1:hover { border-color: rgba(56, 189, 248, 0.4); }
.box-l2:hover { border-color: rgba(245, 158, 11, 0.4); }
.box-l3:hover { border-color: rgba(244, 63, 94, 0.6); }

.level-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.level-badge {
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}

.badge-l1 { background: rgba(56, 189, 248, 0.15); color: #38bdf8; }
.badge-l2 { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.badge-l3 { background: rgba(244, 63, 94, 0.2); color: #f43f5e; }

.level-condition {
  font-size: 13px;
  color: var(--text-dim);
}

.level-info {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 雷达脉冲视觉 */
.radar-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.radar-circle-outer {
  width: 380px;
  height: 380px;
  border-radius: 50%;
  border: 1px solid rgba(56, 189, 248, 0.15);
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.05) 0%, transparent 70%);
}

.radar-circle-mid {
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 1px solid rgba(56, 189, 248, 0.2);
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.radar-circle-inner {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 1px solid rgba(56, 189, 248, 0.3);
  position: relative;
}

.radar-scanner {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: conic-gradient(from 0deg at 50% 50%, rgba(56, 189, 248, 0.4) 0deg, transparent 60deg);
  animation: radar-sweep 4s linear infinite;
  pointer-events: none;
}

@keyframes radar-sweep {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.radar-target {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 6px;
}

.target-1 { top: 20px; left: 180px; }
.target-2 { bottom: 40px; left: -40px; }
.target-3 { top: -60px; right: 20px; }

.target-ping {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--brand-cyan);
  box-shadow: 0 0 8px var(--brand-cyan);
}

.ping-urgent {
  background-color: var(--stock-up);
  box-shadow: 0 0 10px var(--stock-up);
  animation: urgent-pulse 1s infinite;
}

@keyframes urgent-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.6); opacity: 0.5; }
}

.target-label {
  font-size: 11px;
  background: rgba(0, 0, 0, 0.7);
  padding: 2px 6px;
  border-radius: 3px;
  border: 1px solid var(--border-subtle);
}

/* 架构对比表格 */
.compare-table-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

.compare-table th, .compare-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.compare-table th {
  background: #0a0e16;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
}

.compare-table tbody tr:last-child td {
  border-bottom: none;
}

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

.col-highlight {
  background: rgba(56, 189, 248, 0.03);
  border-left: 1px solid rgba(56, 189, 248, 0.15);
  border-right: 1px solid rgba(56, 189, 248, 0.15);
}

.compare-table th.col-highlight {
  color: var(--brand-cyan);
  background: rgba(56, 189, 248, 0.08);
}

/* 下载专区卡片 */
.download-section {
  background: radial-gradient(circle at 50% 30%, rgba(37, 99, 235, 0.15) 0%, transparent 60%);
}

.download-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
  margin-bottom: 40px;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: all 0.25s ease;
}

.download-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-light);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.download-card.active-platform {
  border-color: var(--brand-cyan);
  box-shadow: 0 0 30px rgba(56, 189, 248, 0.2);
}

.platform-icon {
  margin-bottom: 20px;
  color: var(--brand-cyan);
}

.platform-name {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
}

.platform-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.version-tag {
  font-size: 11px;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 9999px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.dl-tip {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 14px;
}

.hash-verify-box {
  display: inline-block;
  padding: 10px 20px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--text-dim);
  max-width: 90%;
  word-break: break-all;
}

.hash-label {
  color: var(--text-muted);
}

.hash-val {
  color: var(--brand-cyan);
}

/* FAQ 手风琴 */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 24px;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: #ffffff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-question:hover {
  color: var(--brand-cyan);
}

.faq-arrow {
  font-size: 20px;
  color: var(--text-dim);
  transition: transform 0.2s;
}

.faq-item.open .faq-arrow {
  transform: rotate(45deg);
  color: var(--brand-cyan);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  background: rgba(0, 0, 0, 0.15);
}

.faq-answer p {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 页脚 */
.site-footer {
  background: #05070a;
  border-top: 1px solid var(--border-subtle);
  padding: 64px 0 48px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 64px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.footer-brand-name {
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
}

.footer-slogan {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 24px;
}

.footer-copy {
  font-size: 12px;
  color: #475569;
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr 1.5fr;
  gap: 32px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  margin-bottom: 10px;
  transition: color 0.2s;
}

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

.disclaimer-text {
  font-size: 12px;
  color: #475569;
  line-height: 1.7;
}

/* 响应式调整 */
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .grid-2col {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .factors-grid, .download-cards-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .nav-menu {
    display: none;
  }

  .hero-title {
    font-size: 34px;
  }
}