:root {
  --container: 1180px;
  --color-primary: #0066ff;
  --color-secondary: #003d99;
  --color-light: #f0f5ff;
  --color-dark: #1a1a1a;
  --color-gray: #666;
  --color-gray-light: #f5f5f5;
  --color-success: #22c55e;
  --color-warning: #f97316;
  --color-danger: #ef4444;
  --trans: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-dark);
  background: #fff;
}

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

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

.image-box,
.task-media,
.panel-media,
.preview-media,
.puzzle-media,
.answer-image,
.result-media,
.verify-image,
.flow-image,
.detail-image {
  overflow: visible;
  line-height: 0;
}

.image-box img,
.task-media img,
.panel-media img,
.preview-media img,
.puzzle-media img,
.answer-image img,
.result-media img,
.verify-image img,
.flow-image img,
.detail-image img {
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

/* 按钮基础样式 */
.btn {
  padding: 12px 28px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--trans);
  display: inline-block;
  text-decoration: none;
  text-align: center;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background: var(--color-secondary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-light);
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

/* 顶部状态栏 */
.header {
  position: sticky;
  top: 0;
  background: white;
  border-bottom: 1px solid #e5e5e5;
  z-index: 1000;
  transition: var(--trans);
}

.header.scrolled {
  padding: 8px 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  max-width: var(--container);
  margin-inline: auto;
  gap: 32px;
}

.header-left {
  flex-shrink: 0;
}

.logo-box {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.logo {
  width: 32px;
  height: 32px;
}

.logo-text {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-dark);
}

.header-center {
  flex: 1;
  text-align: center;
}

.status-label {
  font-size: 14px;
  color: var(--color-gray);
}

.header-right {
  flex-shrink: 0;
  display: flex;
  gap: 12px;
}

.header-btn {
  padding: 8px 16px;
  background: transparent;
  border: 1px solid #e5e5e5;
  border-radius: 4px;
  font-size: 14px;
  color: var(--color-gray);
  cursor: pointer;
  transition: var(--trans);
}

.header-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.header-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--color-primary);
  width: 0;
  transition: width 0.3s ease;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  gap: 6px;
  padding: 0;
}

.mobile-menu-btn span {
  width: 100%;
  height: 2px;
  background: var(--color-dark);
  transition: var(--trans);
  border-radius: 1px;
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* 移动端任务菜单 */
.mobile-task-menu {
  position: fixed;
  right: 0;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 1001;
  display: none;
  background: rgba(0, 0, 0, 0);
  transition: background 0.3s ease;
  pointer-events: none;
}

.mobile-task-menu.active {
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  padding-top: 60px;
  padding-right: 16px;
  background: rgba(0, 0, 0, 0.3);
  pointer-events: auto;
}

.task-menu-content {
  background: white;
  border-radius: 8px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
  overflow: hidden;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  width: 280px;
  animation: slideInRight 0.3s ease;
  pointer-events: auto;
}

.task-menu-item {
  display: block;
  width: 100%;
  padding: 12px 16px;
  background: transparent;
  border: none;
  border-bottom: 1px solid #f0f0f0;
  text-align: left;
  cursor: pointer;
  transition: var(--trans);
  font-size: 14px;
  color: var(--color-gray);
}

.task-menu-item:last-child {
  border-bottom: none;
}

.task-menu-item:hover {
  background: var(--color-light);
  color: var(--color-primary);
}

/* Hero 区域 */
.hero {
  padding: 60px 32px;
  background: linear-gradient(135deg, #f8fbff 0%, #f0f5ff 100%);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 40px;
}

.hero-left h1 {
  font-size: 40px;
  line-height: 1.3;
  margin: 16px 0 20px 0;
  color: var(--color-dark);
}

.status-tag {
  display: inline-block;
  padding: 6px 12px;
  background: var(--color-light);
  color: var(--color-primary);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.hero-desc {
  font-size: 16px;
  color: var(--color-gray);
  line-height: 1.8;
  margin-bottom: 24px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.hero-warning {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 16px;
  background: #fff9e6;
  border-left: 3px solid #f97316;
  border-radius: 4px;
  font-size: 14px;
  color: #b8860b;
}

.warning-icon {
  flex-shrink: 0;
  font-size: 18px;
}

.task-board {
  position: relative;
}

.task-tickets {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.ticket {
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(0, 102, 255, 0.3);
  border-radius: 4px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-primary);
  text-align: center;
  backdrop-filter: blur(4px);
}

.daily-task-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.daily-item {
  padding: 16px;
  text-align: center;
  font-size: 14px;
  color: var(--color-gray);
  border-radius: 6px;
  background: #f9f9f9;
  transition: var(--trans);
}

.daily-item:hover {
  background: var(--color-light);
  color: var(--color-primary);
}

/* 任务选择器 */
.task-selector {
  padding: 60px 32px;
}

.task-selector h2 {
  font-size: 32px;
  margin-bottom: 40px;
  color: var(--color-dark);
  text-align: center;
}

.selector-wrapper {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
}

.task-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.task-btn {
  padding: 14px 16px;
  background: transparent;
  border: 2px solid #e5e5e5;
  border-radius: 6px;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  transition: var(--trans);
  color: var(--color-gray);
  font-weight: 500;
}

.task-btn:hover,
.task-btn.active {
  border-color: var(--color-primary);
  background: var(--color-light);
  color: var(--color-primary);
}

.task-detail {
  position: relative;
}

.detail-item {
  display: none;
  animation: fadeIn 0.3s ease;
}

.detail-item.active {
  display: block;
}

.detail-item h3 {
  font-size: 24px;
  margin-bottom: 16px;
  color: var(--color-dark);
}

.detail-info {
  font-size: 16px;
  color: var(--color-gray);
  line-height: 1.8;
  margin-bottom: 20px;
}

.detail-notice {
  margin-bottom: 24px;
  padding: 16px;
  background: #f5f5f5;
  border-radius: 6px;
}

.detail-notice strong {
  display: block;
  margin-bottom: 8px;
  color: var(--color-dark);
}

.detail-notice ul {
  list-style: none;
  padding-left: 0;
}

.detail-notice li {
  padding: 4px 0;
  color: var(--color-gray);
  font-size: 14px;
}

.detail-notice li:before {
  content: "• ";
  color: var(--color-primary);
  margin-right: 8px;
}

.detail-image {
  margin-top: 24px;
}

.detail-image img {
  width: 100%;
  max-height: 400px;
}

/* 信息分流板 */
.info-panel {
  padding: 60px 32px;
  background: #f9f9f9;
}

.info-panel h2 {
  font-size: 32px;
  margin-bottom: 40px;
  text-align: center;
}

.flow-board {
  margin-bottom: 40px;
}

.flow-lanes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.flow-lane {
  padding: 20px;
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--trans);
  position: relative;
}

.flow-lane:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.15);
  background: var(--color-light);
}

.flow-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.flow-number {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-light);
  color: var(--color-primary);
  border-radius: 4px;
  font-weight: 600;
  font-size: 14px;
}

.flow-lane h3 {
  font-size: 16px;
  color: var(--color-dark);
  margin: 0;
}

.flow-desc {
  font-size: 14px;
  color: var(--color-gray);
  margin-bottom: 12px;
  line-height: 1.6;
}

.flow-tag {
  display: inline-block;
  padding: 4px 8px;
  background: #fff3cd;
  color: #856404;
  border-radius: 3px;
  font-size: 12px;
}

.flow-details {
  display: grid;
  gap: 20px;
}

.flow-detail {
  display: none;
  padding: 20px;
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
}

.flow-detail.active {
  display: block;
}

.flow-detail h4 {
  font-size: 18px;
  margin-bottom: 16px;
  color: var(--color-dark);
}

.flow-detail ul {
  list-style: none;
  padding: 0;
}

.flow-detail li {
  padding: 8px 0;
  color: var(--color-gray);
  font-size: 14px;
  line-height: 1.6;
}

.flow-detail strong {
  color: var(--color-dark);
  font-weight: 600;
}

.flow-image {
  margin-top: 40px;
}

.flow-image img {
  width: 100%;
  max-height: 400px;
}

/* 功能拼接屏 */
.func-grid {
  padding: 60px 32px;
}

.func-grid h2 {
  font-size: 32px;
  margin-bottom: 40px;
  text-align: center;
}

.puzzle-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
  auto-rows: 300px;
}

.puzzle-item {
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  transition: var(--trans);
  overflow: hidden;
}

.puzzle-item:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 16px rgba(0, 102, 255, 0.15);
  transform: translateY(-4px);
}

.puzzle-large {
  grid-column: span 3;
}

.puzzle-medium {
  grid-column: span 2;
}

.puzzle-small {
  grid-column: span 1;
}

.puzzle-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.puzzle-item h3 {
  font-size: 18px;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.puzzle-item p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
  margin: 0;
  flex: 1;
}

.puzzle-media {
  margin-top: 12px;
  flex-shrink: 0;
}

.puzzle-media img {
  width: 100%;
  height: auto;
  max-height: 200px;
}

/* 安全决策面板 */
.security-panel {
  padding: 60px 32px;
  background: #f9f9f9;
}

.security-panel h2 {
  font-size: 32px;
  margin-bottom: 40px;
  text-align: center;
}

.decision-board {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 40px;
}

.decision-questions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.question-btn {
  padding: 12px 16px;
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 6px;
  text-align: left;
  font-size: 14px;
  color: var(--color-gray);
  cursor: pointer;
  transition: var(--trans);
}

.question-btn:hover,
.question-btn.active {
  border-color: var(--color-primary);
  background: var(--color-light);
  color: var(--color-primary);
}

.decision-answers {
  display: grid;
  gap: 20px;
}

.answer-item {
  display: none;
  padding: 24px;
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  animation: fadeIn 0.3s ease;
}

.answer-item.active {
  display: block;
}

.answer-result {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-light);
  color: var(--color-primary);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}

.answer-item h3 {
  font-size: 22px;
  color: var(--color-dark);
  margin-bottom: 12px;
}

.answer-item p {
  font-size: 15px;
  color: var(--color-gray);
  line-height: 1.8;
  margin-bottom: 16px;
}

.answer-action {
  padding: 12px;
  background: #e6f2ff;
  border-left: 3px solid var(--color-primary);
  border-radius: 4px;
  font-size: 14px;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.answer-image {
  margin-top: 16px;
}

.answer-image img {
  width: 100%;
  max-height: 300px;
}

/* App 预览 */
.app-preview {
  padding: 60px 32px;
}

.app-preview h2 {
  font-size: 32px;
  margin-bottom: 40px;
  text-align: center;
}

.preview-stage {
  display: grid;
  grid-template-columns: 180px 1fr 1fr;
  gap: 40px;
}

.preview-tasks {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.preview-task {
  padding: 10px 12px;
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 6px;
  font-size: 13px;
  text-align: left;
  color: var(--color-gray);
  cursor: pointer;
  transition: var(--trans);
}

.preview-task:hover,
.preview-task.active {
  border-color: var(--color-primary);
  background: var(--color-light);
  color: var(--color-primary);
}

.preview-display {
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  padding: 20px;
  min-height: 600px;
}

.preview-image {
  display: none;
  width: 100%;
  max-width: 300px;
}

.preview-image.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

.preview-image img {
  width: 100%;
  height: auto;
}

.preview-description {
  display: grid;
  gap: 20px;
}

.description-item {
  display: none;
  padding: 16px;
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 6px;
}

.description-item.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

.description-item h3 {
  font-size: 18px;
  color: var(--color-dark);
  margin-bottom: 8px;
}

.description-item p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
  margin: 0;
}

/* 网络核对 */
.verify-panel {
  padding: 60px 32px;
  background: #f9f9f9;
}

.verify-panel h2 {
  font-size: 32px;
  margin-bottom: 40px;
  text-align: center;
}

.verify-experiments {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.experiment-card {
  padding: 24px;
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--trans);
}

.experiment-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.15);
}

.experiment-card h3 {
  font-size: 16px;
  color: var(--color-dark);
  margin-bottom: 12px;
}

.experiment-input {
  padding: 12px;
  background: #f5f5f5;
  border-radius: 4px;
  font-size: 13px;
  color: var(--color-gray);
  font-family: "Courier New", monospace;
  margin-bottom: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.verify-tip {
  font-size: 13px;
  color: var(--color-gray);
  margin-bottom: 12px;
  line-height: 1.6;
  border-left: 3px solid var(--color-primary);
  padding-left: 12px;
}

.verify-status {
  display: inline-block;
  padding: 4px 8px;
  background: #fff3cd;
  color: #856404;
  border-radius: 3px;
  font-size: 12px;
}

.verify-image {
  margin-top: 40px;
}

.verify-image img {
  width: 100%;
  max-height: 400px;
}

/* 场景分诊 */
.scenario-panel {
  padding: 60px 32px;
}

.scenario-panel h2 {
  font-size: 32px;
  margin-bottom: 40px;
  text-align: center;
}

.triage-board {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
}

.triage-questions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.triage-btn {
  padding: 12px 16px;
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 6px;
  text-align: left;
  font-size: 14px;
  color: var(--color-gray);
  cursor: pointer;
  transition: var(--trans);
}

.triage-btn:hover,
.triage-btn.active {
  border-color: var(--color-primary);
  background: var(--color-light);
  color: var(--color-primary);
}

.triage-results {
  display: grid;
  gap: 20px;
}

.result-item {
  display: none;
  padding: 24px;
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 8px;
  animation: fadeIn 0.3s ease;
}

.result-item.active {
  display: block;
}

.result-item h3 {
  font-size: 22px;
  color: var(--color-dark);
  margin-bottom: 16px;
}

.result-info,
.result-warning {
  margin-bottom: 16px;
}

.result-info h4,
.result-warning h4 {
  font-size: 15px;
  color: var(--color-dark);
  margin-bottom: 8px;
  font-weight: 600;
}

.result-info ul,
.result-warning ul {
  list-style: none;
  padding-left: 0;
}

.result-info li,
.result-warning li {
  padding: 6px 0;
  color: var(--color-gray);
  font-size: 14px;
  line-height: 1.6;
}

.result-info li:before,
.result-warning li:before {
  content: "• ";
  color: var(--color-primary);
  margin-right: 8px;
}

.result-warning {
  padding: 12px;
  background: #fef3c7;
  border-left: 3px solid #f97316;
  border-radius: 4px;
}

.result-warning h4 {
  color: #b8860b;
  margin-top: 0;
}

.result-warning li {
  color: #b8860b;
}

.result-media {
  margin-top: 16px;
}

.result-media img {
  width: 100%;
  max-height: 300px;
}

/* 确认卡 */
.confirm-card {
  padding: 60px 32px;
  background: #f9f9f9;
}

.confirm-card h2 {
  font-size: 32px;
  margin-bottom: 40px;
  text-align: center;
}

.confirm-checklist {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.confirm-item {
  padding: 24px;
  background: white;
  border: 2px solid #e5e5e5;
  border-radius: 8px;
  transition: var(--trans);
}

.confirm-item.completed {
  border-color: var(--color-success);
  background: #f0fdf4;
}

.confirm-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.confirm-number {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-light);
  color: var(--color-primary);
  border-radius: 4px;
  font-weight: 600;
  font-size: 16px;
}

.confirm-item.completed .confirm-number {
  background: var(--color-success);
  color: white;
}

.confirm-item h3 {
  font-size: 16px;
  color: var(--color-dark);
  margin: 0;
}

.confirm-item p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
  margin: 12px 0;
}

.confirm-btn {
  width: 100%;
  padding: 10px;
  background: transparent;
  border: 1px solid #e5e5e5;
  border-radius: 4px;
  font-size: 13px;
  color: var(--color-gray);
  cursor: pointer;
  transition: var(--trans);
}

.confirm-item.completed .confirm-btn {
  border-color: var(--color-success);
  color: var(--color-success);
  background: #f0fdf4;
}

.confirm-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.confirm-completion {
  padding: 24px;
  background: #f0fdf4;
  border: 2px solid var(--color-success);
  border-radius: 8px;
  text-align: center;
}

.completion-message {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.completion-icon {
  font-size: 28px;
  color: var(--color-success);
}

.completion-message p {
  font-size: 15px;
  color: var(--color-success);
  margin: 0;
}

/* FAQ 诊断箱 */
.faq-box {
  padding: 60px 32px;
}

.faq-box h2 {
  font-size: 32px;
  margin-bottom: 40px;
  text-align: center;
}

.faq-wrapper {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 32px;
}

.faq-categories {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-category {
  padding: 10px 16px;
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 6px;
  font-size: 14px;
  text-align: left;
  color: var(--color-gray);
  cursor: pointer;
  transition: var(--trans);
}

.faq-category:hover,
.faq-category.active {
  border-color: var(--color-primary);
  background: var(--color-light);
  color: var(--color-primary);
}

.faq-items {
  display: grid;
  gap: 12px;
}

.faq-item {
  display: none;
}

.faq-item.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

.faq-question {
  width: 100%;
  padding: 16px;
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 6px;
  text-align: left;
  font-size: 15px;
  color: var(--color-dark);
  cursor: pointer;
  transition: var(--trans);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 500;
}

.faq-question:hover {
  border-color: var(--color-primary);
  background: var(--color-light);
}

.faq-icon {
  flex-shrink: 0;
  font-size: 18px;
  transition: var(--trans);
}

.faq-item.expanded .faq-question {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  border-color: var(--color-primary);
  background: var(--color-light);
}

.faq-item.expanded .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 16px;
  background: white;
  border: 1px solid var(--color-primary);
  border-top: none;
  border-radius: 0 0 6px 6px;
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.8;
}

.faq-item.expanded .faq-answer {
  display: block;
  animation: slideDown 0.3s ease;
}

/* Footer */
.footer {
  background: #1a1a1a;
  color: #ccc;
  padding: 60px 32px 40px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-logo {
  width: 60px;
  height: 60px;
  margin-bottom: 8px;
}

.footer-logo img {
  width: 100%;
  height: auto;
}

.footer-brand {
  font-size: 14px;
  line-height: 1.8;
  color: #999;
  margin: 0;
}

.footer-section h4 {
  font-size: 15px;
  color: white;
  margin: 0;
  margin-bottom: 8px;
}

.footer-section ul {
  list-style: none;
  padding: 0;
}

.footer-section li {
  padding: 4px 0;
}

.footer-section a {
  color: #999;
  text-decoration: none;
  font-size: 14px;
  transition: var(--trans);
}

.footer-section a:hover {
  color: var(--color-primary);
}

.footer-section li:before {
  content: "• ";
  color: var(--color-primary);
  margin-right: 8px;
}

.footer-bottom {
  border-top: 1px solid #333;
  padding-top: 24px;
}

.footer-statement {
  margin-bottom: 16px;
}

.footer-statement p {
  font-size: 13px;
  color: #999;
  line-height: 1.8;
  margin: 0;
}

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

.footer-copyright p {
  font-size: 13px;
  color: #666;
  margin: 0;
}

/* 返回顶部 */
.scroll-to-top {
  position: fixed;
  right: 32px;
  bottom: 32px;
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 20px;
  cursor: pointer;
  transition: var(--trans);
  z-index: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-to-top:hover {
  background: var(--color-secondary);
  transform: translateY(-4px);
}

/* 动画 */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    max-height: 0;
  }
  to {
    opacity: 1;
    max-height: 500px;
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* 模块进入视口动画 */
section {
  opacity: 0;
  animation: fadeIn 0.6s ease forwards;
}

/* 移动端适配 */
@media (max-width: 1024px) {
  :root {
    --container: 900px;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-left h1 {
    font-size: 32px;
  }

  .selector-wrapper {
    grid-template-columns: 1fr;
  }

  .puzzle-grid {
    grid-template-columns: repeat(3, 1fr);
    auto-rows: 250px;
  }

  .puzzle-large {
    grid-column: span 2;
  }

  .decision-board {
    grid-template-columns: 1fr;
  }

  .preview-stage {
    grid-template-columns: 1fr;
  }

  .verify-experiments {
    grid-template-columns: 1fr;
  }

  .triage-board {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --container: 100%;
  }

  .header-container {
    padding: 12px 16px;
    gap: 16px;
  }

  .header-right {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .logo {
    width: 28px;
    height: 28px;
  }

  .logo-text {
    font-size: 16px;
  }

  .status-label {
    font-size: 12px;
  }

  .hero {
    padding: 40px 16px;
  }

  .hero-left h1 {
    font-size: 24px;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .daily-task-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .task-selector,
  .info-panel,
  .func-grid,
  .security-panel,
  .app-preview,
  .verify-panel,
  .scenario-panel,
  .confirm-card,
  .faq-box {
    padding: 40px 16px;
  }

  h2 {
    font-size: 24px !important;
  }

  .selector-wrapper {
    grid-template-columns: 1fr;
  }

  .task-buttons {
    flex-direction: row;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .task-btn {
    flex-shrink: 0;
    min-width: 150px;
    padding: 10px 12px;
    font-size: 13px;
  }

  .puzzle-grid {
    grid-template-columns: repeat(2, 1fr);
    auto-rows: 200px;
    gap: 12px;
  }

  .puzzle-large,
  .puzzle-medium,
  .puzzle-small {
    grid-column: span 1;
  }

  .puzzle-item:nth-child(1) {
    grid-column: span 2;
  }

  .puzzle-item:nth-child(6) {
    grid-column: span 2;
  }

  .decision-board {
    grid-template-columns: 1fr;
  }

  .decision-questions {
    flex-direction: row;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .question-btn {
    flex-shrink: 0;
    min-width: 140px;
    padding: 10px 12px;
    font-size: 12px;
  }

  .preview-stage {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .preview-display {
    min-height: 500px;
  }

  .preview-tasks {
    flex-direction: row;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .preview-task {
    flex-shrink: 0;
    min-width: 120px;
    padding: 8px 12px;
    font-size: 12px;
  }

  .verify-experiments {
    grid-template-columns: 1fr;
  }

  .triage-board {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .triage-questions {
    flex-direction: row;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .triage-btn {
    flex-shrink: 0;
    min-width: 140px;
    padding: 10px 12px;
    font-size: 12px;
  }

  .confirm-checklist {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .confirm-item {
    padding: 16px;
  }

  .faq-wrapper {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .faq-categories {
    flex-direction: row;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .faq-category {
    flex-shrink: 0;
    min-width: 100px;
    padding: 10px;
    font-size: 12px;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-section h4 {
    margin-bottom: 12px;
  }

  .scroll-to-top {
    width: 44px;
    height: 44px;
    right: 16px;
    bottom: 16px;
  }
}

@media (max-width: 480px) {
  :root {
    --container: 100%;
  }

  .container {
    width: 100%;
    padding: 0 16px;
  }

  .header-container {
    padding: 10px 16px;
  }

  .hero {
    padding: 32px 16px;
  }

  .hero-left h1 {
    font-size: 20px;
    margin: 12px 0 16px 0;
  }

  .hero-desc {
    font-size: 14px;
    margin-bottom: 16px;
  }

  .hero-buttons {
    gap: 8px;
  }

  .btn {
    padding: 10px 16px;
    font-size: 13px;
  }

  .hero-warning {
    padding: 10px 12px;
    font-size: 12px;
  }

  .task-tickets {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
    bottom: 8px;
    left: 8px;
    right: 8px;
  }

  .ticket {
    padding: 6px 8px;
    font-size: 11px;
  }

  h2 {
    font-size: 20px !important;
    margin-bottom: 24px !important;
  }

  .task-btn {
    min-width: 120px;
    padding: 10px;
    font-size: 12px;
  }

  .puzzle-grid {
    grid-template-columns: 1fr;
    auto-rows: auto;
  }

  .puzzle-item {
    grid-column: span 1 !important;
  }

  .puzzle-item h3 {
    font-size: 15px;
  }

  .puzzle-item p {
    font-size: 13px;
  }

  .question-btn {
    min-width: 120px;
    padding: 10px;
    font-size: 12px;
  }

  .answer-item {
    padding: 16px;
  }

  .answer-item h3 {
    font-size: 18px;
    margin-bottom: 12px;
  }

  .answer-result {
    font-size: 11px;
  }

  .preview-display {
    min-height: 400px;
    padding: 12px;
  }

  .preview-task {
    min-width: 100px;
    padding: 8px;
    font-size: 11px;
  }

  .description-item {
    padding: 12px;
  }

  .description-item h3 {
    font-size: 15px;
    margin-bottom: 6px;
  }

  .description-item p {
    font-size: 13px;
  }

  .experiment-card {
    padding: 16px;
  }

  .experiment-card h3 {
    font-size: 14px;
  }

  .experiment-input {
    font-size: 12px;
  }

  .verify-tip {
    font-size: 12px;
  }

  .result-item {
    padding: 16px;
  }

  .result-item h3 {
    font-size: 18px;
    margin-bottom: 12px;
  }

  .result-info h4,
  .result-warning h4 {
    font-size: 14px;
  }

  .result-info li,
  .result-warning li {
    font-size: 13px;
  }

  .confirm-item {
    padding: 12px;
  }

  .confirm-item h3 {
    font-size: 14px;
  }

  .confirm-item p {
    font-size: 13px;
  }

  .confirm-btn {
    font-size: 12px;
    padding: 8px;
  }

  .confirm-completion {
    padding: 16px;
  }

  .completion-icon {
    font-size: 24px;
  }

  .completion-message p {
    font-size: 13px;
  }

  .faq-category {
    min-width: 80px;
    padding: 8px;
    font-size: 12px;
  }

  .faq-question {
    padding: 14px;
    font-size: 13px;
  }

  .faq-answer {
    padding: 14px;
    font-size: 13px;
  }

  .footer {
    padding: 40px 16px 24px;
  }

  .footer-content {
    gap: 20px;
  }

  .footer-section h4 {
    font-size: 14px;
    margin-bottom: 8px;
  }

  .footer-section a,
  .footer-section li {
    font-size: 13px;
  }

  .scroll-to-top {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }
}