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

:root {
  --primary: #FF8A4C;
  --primary-dark: #F57038;
  --primary-light: #FFB88C;
  --primary-bg: #FFF4EB;
  --primary-soft: #FFE4D0;
  --accent: #FF6B35;
  --text-main: #2C2C2C;
  --text-sub: #666666;
  --text-light: #999999;
  --bg-white: #FFFFFF;
  --bg-light: #FFF9F3;
  --bg-gray: #F7F7F7;
  --border: #FFE0CC;
  --shadow: 0 4px 20px rgba(255, 138, 76, 0.12);
  --shadow-lg: 0 8px 30px rgba(255, 138, 76, 0.18);
  --radius: 12px;
  --radius-lg: 20px;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--text-main);
  background: var(--bg-white);
  line-height: 1.7;
  font-size: 15px;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

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

ul, ol {
  list-style: none;
}

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

h1, h2, h3, h4, h5, h6 {
  line-height: 1.4;
  font-weight: 600;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== 按钮 ========== */
.btn-apply {
  display: inline-block;
  padding: 12px 28px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff !important;
  border-radius: 50px;
  font-weight: 600;
  font-size: 15px;
  box-shadow: 0 6px 16px rgba(255, 107, 53, 0.35);
  transition: all 0.3s;
  border: none;
  cursor: pointer;
  text-align: center;
  letter-spacing: 0.5px;
}

.btn-apply:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(255, 107, 53, 0.45);
  color: #fff !important;
}

.btn-outline {
  display: inline-block;
  padding: 10px 24px;
  background: transparent;
  color: var(--primary) !important;
  border: 2px solid var(--primary);
  border-radius: 50px;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.3s;
  text-align: center;
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff !important;
}

.btn-large {
  padding: 16px 40px;
  font-size: 17px;
}

.btn-hero {
  margin-top: 20px;
  padding: 16px 40px;
  font-size: 17px;
}

.btn-card {
  width: 100%;
  margin-top: 16px;
}

.btn-cta {
  padding: 18px 48px;
  font-size: 18px;
  margin-top: 20px;
}

/* ========== 顶部导航 ========== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

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

.logo-icon {
  font-size: 28px;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-dark);
  letter-spacing: 0.5px;
}

.nav {
  display: flex;
  gap: 36px;
}

.nav-link {
  font-size: 15px;
  color: var(--text-main);
  font-weight: 500;
  position: relative;
  padding: 4px 0;
  transition: color 0.2s;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
}

.nav-link.active::after,
.nav-link:hover::after {
  width: 100%;
}

.header-btn {
  padding: 10px 22px;
  font-size: 14px;
}

.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  font-size: 26px;
  color: var(--primary);
  cursor: pointer;
  padding: 4px 8px;
}

/* 移动端菜单 */
.mobile-menu {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  z-index: 99;
  flex-direction: column;
  padding: 10px 20px 20px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

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

.mobile-menu a {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
  color: var(--text-main);
}

.mobile-menu a:last-child {
  border-bottom: none;
}

.mobile-apply {
  margin-top: 14px;
  padding: 14px !important;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff !important;
  border-radius: 50px;
  text-align: center;
  border: none !important;
  font-weight: 600;
}

/* ========== Hero ========== */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--primary-bg) 0%, #FFF 100%);
  padding: 60px 0 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  right: 0;
  width: 55%;
  height: 100%;
  opacity: 0.12;
  z-index: 0;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to right, var(--primary-bg), transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
}

.hero-text h1 {
  font-size: 44px;
  color: var(--text-main);
  margin-bottom: 16px;
  line-height: 1.25;
}

.hero-sub {
  font-size: 18px;
  color: var(--primary-dark);
  font-weight: 600;
  margin-bottom: 16px;
}

.hero-desc {
  font-size: 16px;
  color: var(--text-sub);
  margin-bottom: 20px;
  line-height: 1.7;
}

.hero-desc strong {
  color: var(--accent);
  font-size: 18px;
}

.hero-tips {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #FFF8E1;
  border: 1px solid #FFE0B2;
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 14px;
  color: #795548;
  flex-wrap: wrap;
}

.tip-tag {
  background: #FF9800;
  color: #fff;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  white-space: nowrap;
}

/* 价格卡片 */
.hero-card {
  display: flex;
  justify-content: center;
}

.price-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 380px;
  position: relative;
  border: 2px solid var(--primary-soft);
}

.price-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  padding: 6px 20px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
}

.price-main {
  text-align: center;
  color: var(--accent);
  font-size: 22px;
  font-weight: 500;
  margin: 12px 0 20px;
}

.price-main span {
  font-size: 56px;
  font-weight: 800;
  margin: 0 4px;
}

.price-main em {
  font-style: normal;
  font-size: 16px;
  color: var(--text-sub);
}

.price-features {
  margin-bottom: 10px;
}

.price-features li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-main);
  border-bottom: 1px dashed var(--border);
}

.price-features li:last-child {
  border-bottom: none;
}

/* ========== 通用 Section ========== */
.section {
  padding: 70px 0;
}

.bg-light {
  background: var(--bg-light);
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 32px;
  color: var(--text-main);
  margin-bottom: 10px;
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  display: block;
  width: 50px;
  height: 4px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  margin: 12px auto 0;
  border-radius: 2px;
}

.section-title p {
  color: var(--text-sub);
  font-size: 16px;
}

/* 页面 Banner */
.page-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: #fff;
  padding: 80px 0 60px;
  text-align: center;
}

.page-banner h1 {
  font-size: 40px;
  margin-bottom: 12px;
  color: #fff;
}

.page-banner p {
  font-size: 17px;
  opacity: 0.95;
}

/* ========== 通知栏 ========== */
.notice-bar {
  background: linear-gradient(90deg, #FFF3E0, #FFE0B2);
  padding: 16px 0;
  border-top: 2px solid #FFB74D;
  border-bottom: 2px solid #FFB74D;
}

.notice-content {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: #5D4037;
  flex-wrap: wrap;
  line-height: 1.6;
}

.notice-icon {
  font-size: 20px;
}

.notice-content strong {
  color: #E65100;
}

/* ========== 套餐卡片 ========== */
.pkg-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pkg-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  box-shadow: var(--shadow);
  border: 2px solid transparent;
  transition: all 0.3s;
  position: relative;
}

.pkg-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-soft);
}

.pkg-card.featured {
  border-color: var(--primary);
  background: linear-gradient(180deg, #FFF8F2 0%, #fff 60%);
  transform: translateY(-6px);
}

.pkg-tag {
  display: inline-block;
  background: var(--primary-bg);
  color: var(--primary-dark);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 14px;
}

.pkg-card.featured .pkg-tag {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
}

.pkg-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.pkg-price {
  font-size: 42px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 20px;
}

.pkg-price span {
  font-size: 16px;
  color: var(--text-sub);
  font-weight: 400;
  margin-left: 4px;
}

.pkg-list {
  margin-bottom: 24px;
}

.pkg-list li {
  padding: 8px 0;
  color: var(--text-main);
  font-size: 14px;
  border-bottom: 1px dashed var(--border);
  padding-left: 22px;
  position: relative;
}

.pkg-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

.pkg-list li:last-child {
  border-bottom: none;
}

.pkg-card .btn-apply {
  width: 100%;
}

.pkg-note {
  margin-top: 30px;
  text-align: center;
  color: var(--text-sub);
  font-size: 14px;
  padding: 16px;
  background: var(--bg-light);
  border-radius: var(--radius);
}

/* ========== 真相说明区 ========== */
.truth-section {
  background: var(--bg-light);
}

.truth-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 50px;
  align-items: center;
}

.truth-text h2 {
  font-size: 30px;
  margin-bottom: 16px;
  color: var(--text-main);
}

.truth-text > p {
  color: var(--text-sub);
  margin-bottom: 24px;
  font-size: 15px;
}

.truth-cards {
  display: grid;
  gap: 16px;
}

.truth-item {
  display: flex;
  gap: 14px;
  background: #fff;
  padding: 18px 20px;
  border-radius: var(--radius);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
  border-left: 4px solid var(--primary);
}

.truth-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.truth-item strong {
  display: block;
  font-size: 16px;
  color: var(--text-main);
  margin-bottom: 4px;
}

.truth-item p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
}

.truth-img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.truth-img {
  width: 100%;
  height: 100%;
  min-height: 400px;
  object-fit: cover;
  background: var(--primary-soft);
}

/* ========== 宽带区 ========== */
.bb-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.bb-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s;
}

.bb-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.bb-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--primary-soft);
}

.bb-info {
  padding: 24px;
}

.bb-info h3 {
  font-size: 20px;
  margin-bottom: 10px;
  color: var(--text-main);
}

.bb-price {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 10px;
}

.bb-price span {
  font-size: 14px;
  color: var(--text-sub);
  font-weight: 400;
  margin-left: 4px;
}

.bb-info p {
  color: var(--text-sub);
  font-size: 14px;
  margin-bottom: 16px;
  line-height: 1.6;
}

/* ========== 办理流程 ========== */
.process-section {
  background: linear-gradient(135deg, var(--primary-bg) 0%, var(--bg-light) 100%);
}

.process-steps {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: 10px;
  flex-wrap: wrap;
}

.step {
  flex: 1;
  min-width: 180px;
  text-align: center;
  background: #fff;
  padding: 30px 20px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  position: relative;
}

.step-num {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  width: 36px;
  height: 36px;
  line-height: 36px;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
}

.step-icon {
  font-size: 42px;
  margin: 12px 0 14px;
}

.step h3 {
  font-size: 18px;
  color: var(--text-main);
  margin-bottom: 8px;
}

.step p {
  color: var(--text-sub);
  font-size: 13px;
  line-height: 1.6;
}

.step-arrow {
  display: flex;
  align-items: center;
  color: var(--primary);
  font-size: 24px;
  font-weight: bold;
}

.process-cta {
  text-align: center;
  margin-top: 50px;
}

/* ========== 用户评价 ========== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: #fff;
  padding: 28px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  position: relative;
  border: 1px solid var(--border);
}

.review-stars {
  color: #FFB300;
  font-size: 20px;
  letter-spacing: 2px;
  margin-bottom: 14px;
}

.review-card p {
  color: var(--text-main);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.review-user {
  color: var(--text-light);
  font-size: 13px;
  border-top: 1px dashed var(--border);
  padding-top: 12px;
}

/* ========== CTA Section ========== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: #fff;
  text-align: center;
  padding: 60px 0;
}

.cta-section h2 {
  font-size: 30px;
  margin-bottom: 14px;
  color: #fff;
}

.cta-section p {
  font-size: 16px;
  opacity: 0.95;
  margin-bottom: 10px;
}

.cta-section .btn-apply {
  background: #fff;
  color: var(--primary) !important;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.cta-section .btn-apply:hover {
  background: #FFF8F0;
  color: var(--primary-dark) !important;
}

/* ========== 页脚 ========== */
.footer {
  background: #2C2416;
  color: #D7CBB8;
  padding: 50px 0 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 30px;
}

.footer-col h4 {
  color: #fff;
  font-size: 17px;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background: var(--primary);
}

.footer-col p {
  font-size: 13px;
  line-height: 1.8;
  color: #AEA592;
}

.footer-col ul li {
  padding: 5px 0;
}

.footer-col ul li a {
  color: #AEA592;
  font-size: 13px;
  transition: color 0.2s;
}

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

.footer-apply-btn {
  display: inline-block;
  padding: 10px 22px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff !important;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 14px;
}

.footer-tip {
  font-size: 12px !important;
  color: #8F8572 !important;
}

.footer-bottom {
  border-top: 1px solid #3D3424;
  padding-top: 20px;
  text-align: center;
}

.footer-bottom p {
  font-size: 12px;
  color: #8F8572;
  line-height: 2;
}

/* ========== info-box 通用信息块 ========== */
.info-box {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow);
}

.warning-box {
  border-left: 5px solid #FF9800;
  background: linear-gradient(90deg, #FFF8E1 0%, #fff 50%);
}

.warning-box h3 {
  color: #E65100;
  font-size: 22px;
  margin-bottom: 14px;
}

.warning-box > p {
  color: var(--text-main);
  margin-bottom: 14px;
}

.warning-box ul {
  display: grid;
  gap: 10px;
}

.warning-box ul li {
  padding: 12px 16px;
  background: #FFF3E0;
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: #5D4037;
}

.warning-box ul li strong {
  color: #E65100;
}

.tips-box h3 {
  font-size: 22px;
  color: var(--primary-dark);
  margin-bottom: 20px;
}

.tips-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.tip-item {
  padding: 18px;
  background: var(--bg-light);
  border-radius: var(--radius);
  border-left: 4px solid var(--primary);
}

.tip-item strong {
  display: block;
  color: var(--primary-dark);
  font-size: 15px;
  margin-bottom: 6px;
}

.tip-item p {
  color: var(--text-sub);
  font-size: 13px;
  line-height: 1.7;
}

/* ========== 套餐详情页 ========== */
.pkg-detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pkg-detail-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 2px solid transparent;
  transition: all 0.3s;
}

.pkg-detail-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.pkg-detail-card.highlight {
  border-color: var(--primary);
  transform: translateY(-10px);
}

.pkg-detail-header {
  background: linear-gradient(135deg, var(--primary-bg), var(--primary-soft));
  padding: 24px 26px 20px;
  text-align: center;
}

.pkg-detail-card.highlight .pkg-detail-header {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
}

.pkg-level {
  display: inline-block;
  background: #fff;
  color: var(--primary-dark);
  padding: 3px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 10px;
}

.pkg-level.hot {
  background: #fff;
  color: var(--accent);
}

.pkg-detail-header h3 {
  font-size: 22px;
  color: inherit;
}

.pkg-detail-price {
  text-align: center;
  padding: 20px;
  border-bottom: 1px dashed var(--border);
}

.price-num {
  font-size: 48px;
  font-weight: 800;
  color: var(--accent);
}

.price-unit {
  font-size: 14px;
  color: var(--text-sub);
  margin-left: 4px;
}

.pkg-detail-body {
  padding: 16px 26px;
}

.pkg-detail-item {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 14px;
}

.pkg-detail-item:last-child {
  border-bottom: none;
}

.pkg-detail-item .label {
  color: var(--text-sub);
}

.pkg-detail-item .value {
  color: var(--text-main);
  font-weight: 600;
}

.pkg-detail-footer {
  padding: 0 26px 26px;
  text-align: center;
}

.pkg-note-text {
  font-size: 13px;
  color: var(--text-sub);
  margin-bottom: 14px;
}

.pkg-detail-footer .btn-apply {
  width: 100%;
}

/* 套餐对比表 */
.table-wrap {
  overflow-x: auto;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 500px;
}

.compare-table th,
.compare-table td {
  padding: 16px 20px;
  text-align: center;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}

.compare-table thead {
  background: linear-gradient(135deg, var(--primary-bg), var(--primary-soft));
}

.compare-table th {
  font-weight: 600;
  color: var(--text-main);
  font-size: 15px;
}

.compare-table th.highlight-col,
.compare-table td.highlight-col {
  background: var(--primary-bg);
  font-weight: 600;
  color: var(--primary-dark);
}

.compare-table tbody tr:hover {
  background: var(--bg-light);
}

/* 选卡指南 */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.guide-card {
  background: #fff;
  padding: 26px 20px;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow);
  transition: all 0.3s;
}

.guide-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.guide-icon {
  font-size: 44px;
  margin-bottom: 12px;
}

.guide-card h3 {
  font-size: 17px;
  color: var(--text-main);
  margin-bottom: 10px;
}

.guide-card p {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.7;
}

.guide-card strong {
  color: var(--accent);
}

/* ========== 宽带详情页 ========== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-card {
  background: #fff;
  padding: 28px 22px;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: all 0.3s;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
}

.feature-icon {
  font-size: 44px;
  margin-bottom: 12px;
}

.feature-card h3 {
  font-size: 18px;
  color: var(--text-main);
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.7;
}

.bb-pkg-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.bb-pkg-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  box-shadow: var(--shadow);
  border: 2px solid transparent;
  transition: all 0.3s;
  text-align: center;
}

.bb-pkg-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.bb-pkg-card.featured {
  border-color: var(--primary);
  transform: translateY(-6px);
  background: linear-gradient(180deg, #FFF8F2 0%, #fff 60%);
}

.bb-pkg-header h3 {
  font-size: 22px;
  color: var(--text-main);
  margin-bottom: 10px;
}

.bb-pkg-tag {
  display: inline-block;
  background: var(--primary-bg);
  color: var(--primary-dark);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 10px;
}

.bb-pkg-tag.hot {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
}

.bb-pkg-price {
  margin: 16px 0 20px;
}

.bb-price-num {
  font-size: 48px;
  font-weight: 800;
  color: var(--accent);
}

.bb-price-unit {
  font-size: 14px;
  color: var(--text-sub);
}

.bb-pkg-features {
  text-align: left;
  margin-bottom: 24px;
}

.bb-pkg-features li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-main);
  border-bottom: 1px dashed var(--border);
}

.bb-pkg-features li:last-child {
  border-bottom: none;
}

/* 融合套餐 */
.combo-box {
  background: linear-gradient(135deg, var(--primary-bg) 0%, #fff 100%);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: center;
  border: 2px solid var(--primary-soft);
}

.combo-text h2 {
  font-size: 28px;
  color: var(--text-main);
  margin-bottom: 16px;
}

.combo-text > p {
  color: var(--text-sub);
  margin-bottom: 20px;
  line-height: 1.8;
}

.combo-list {
  margin-bottom: 24px;
}

.combo-list li {
  padding: 8px 0;
  color: var(--text-main);
  font-size: 15px;
}

.combo-img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.combo-img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  object-fit: cover;
  background: var(--primary-soft);
}

/* 宽带办理流程 */
.bb-process {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.bb-step {
  flex: 1;
  min-width: 160px;
  background: #fff;
  padding: 26px 18px;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow);
  position: relative;
}

.bb-step-num {
  width: 46px;
  height: 46px;
  line-height: 46px;
  margin: 0 auto 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border-radius: 50%;
  font-size: 20px;
  font-weight: 700;
}

.bb-step h3 {
  font-size: 17px;
  color: var(--text-main);
  margin-bottom: 8px;
}

.bb-step p {
  color: var(--text-sub);
  font-size: 13px;
  line-height: 1.6;
}

/* 场景卡片 */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.scene-card {
  background: #fff;
  padding: 26px 28px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border-left: 5px solid var(--primary);
}

.scene-card h3 {
  font-size: 20px;
  color: var(--text-main);
  margin-bottom: 10px;
}

.scene-rec {
  display: inline-block;
  background: var(--primary-bg);
  color: var(--primary-dark);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
}

.scene-card p {
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.7;
}

/* ========== FAQ 页面 ========== */
.faq-category {
  margin-bottom: 40px;
}

.faq-category > h2 {
  font-size: 24px;
  color: var(--primary-dark);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-soft);
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all 0.2s;
}

.faq-item:hover {
  box-shadow: var(--shadow-lg);
}

.faq-question {
  padding: 18px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  background: #fff;
  transition: background 0.2s;
}

.faq-question:hover {
  background: var(--bg-light);
}

.faq-q {
  background: var(--primary);
  color: #fff;
  width: 28px;
  height: 28px;
  line-height: 28px;
  border-radius: 50%;
  font-weight: 700;
  text-align: center;
  flex-shrink: 0;
  font-size: 14px;
}

.faq-question h3 {
  flex: 1;
  font-size: 16px;
  color: var(--text-main);
  font-weight: 600;
}

.faq-toggle {
  font-size: 22px;
  color: var(--primary);
  font-weight: 300;
  transition: transform 0.3s;
  flex-shrink: 0;
  width: 28px;
  text-align: center;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 20px 24px;
  background: var(--bg-light);
  border-top: 1px solid var(--border);
  gap: 14px;
}

.faq-answer > div {
  flex: 1;
}

.faq-item.active .faq-answer {
  display: flex;
  align-items: flex-start;
}

.faq-a {
  background: var(--accent);
  color: #fff;
  width: 28px;
  height: 28px;
  line-height: 28px;
  border-radius: 50%;
  font-weight: 700;
  text-align: center;
  flex-shrink: 0;
  font-size: 14px;
}

.faq-answer p,
.faq-answer ul,
.faq-answer ol {
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--text-main);
  line-height: 1.8;
}

.faq-answer ul,
.faq-answer ol {
  padding-left: 22px;
}

.faq-answer ul li,
.faq-answer ol li {
  padding: 4px 0;
}

.faq-answer ul li {
  list-style: disc;
}

.faq-answer ol li {
  list-style: decimal;
}

.faq-answer a {
  color: var(--primary);
  text-decoration: underline;
}

/* 还有问题 */
.still-question {
  text-align: center;
}

.still-question h2 {
  font-size: 26px;
  color: var(--text-main);
  margin-bottom: 10px;
}

.still-question > p {
  color: var(--text-sub);
  margin-bottom: 30px;
}

.contact-methods {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 720px;
  margin: 0 auto;
}

.contact-item {
  background: #fff;
  padding: 28px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.contact-icon {
  font-size: 40px;
  display: block;
  margin-bottom: 10px;
}

.contact-item strong {
  display: block;
  font-size: 17px;
  color: var(--text-main);
  margin-bottom: 8px;
}

.contact-item p {
  color: var(--text-sub);
  font-size: 14px;
}

/* ========== 关于我们页 ========== */
.about-intro {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 50px;
  align-items: center;
}

.about-text h2 {
  font-size: 28px;
  color: var(--text-main);
  margin-bottom: 20px;
}

.about-text p {
  color: var(--text-sub);
  margin-bottom: 16px;
  line-height: 1.9;
  font-size: 15px;
}

.about-text strong {
  color: var(--primary-dark);
}

.about-img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-img {
  width: 100%;
  height: 100%;
  min-height: 360px;
  object-fit: cover;
  background: var(--primary-soft);
}

.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.advantage-card {
  background: #fff;
  padding: 30px 26px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  text-align: center;
  transition: all 0.3s;
  border-top: 4px solid var(--primary);
}

.advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.adv-icon {
  font-size: 46px;
  margin-bottom: 14px;
}

.advantage-card h3 {
  font-size: 20px;
  color: var(--text-main);
  margin-bottom: 12px;
}

.advantage-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
}

.promise-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.promise-card {
  background: linear-gradient(135deg, var(--primary-bg), #fff);
  padding: 30px;
  border-radius: var(--radius-lg);
  position: relative;
  border: 1px solid var(--primary-soft);
}

.promise-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--primary);
  opacity: 0.3;
  margin-bottom: 8px;
}

.promise-card h3 {
  font-size: 20px;
  color: var(--text-main);
  margin-bottom: 12px;
}

.promise-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
}

/* 数据 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  background: #fff;
  padding: 30px 20px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.stat-num {
  font-size: 38px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-sub);
}

/* 发展历程 */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 8px;
  bottom: 8px;
  width: 3px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  margin-bottom: 30px;
}

.timeline-dot {
  position: absolute;
  left: -35px;
  top: 8px;
  width: 17px;
  height: 17px;
  background: var(--primary);
  border: 3px solid #fff;
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.timeline-content {
  background: #fff;
  padding: 20px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.timeline-content h3 {
  font-size: 18px;
  color: var(--primary-dark);
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
}

/* 联系 */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.contact-card {
  background: #fff;
  padding: 30px 26px;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow);
  transition: all 0.3s;
}

.contact-card:hover {
  transform: translateY(-4px);
}

.contact-card-icon {
  font-size: 44px;
  display: block;
  margin-bottom: 12px;
}

.contact-card h3 {
  font-size: 18px;
  color: var(--text-main);
  margin-bottom: 12px;
}

.contact-card p {
  color: var(--text-sub);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 14px;
}

.contact-detail {
  background: var(--bg-light);
  padding: 12px;
  border-radius: var(--radius);
  font-weight: 600;
  color: var(--primary-dark) !important;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.contact-links a {
  padding: 6px 14px;
  background: var(--primary-bg);
  color: var(--primary-dark);
  border-radius: 20px;
  font-size: 13px;
  transition: all 0.2s;
}

.contact-links a:hover {
  background: var(--primary);
  color: #fff;
}

/* ========== 响应式 ========== */
@media (max-width: 980px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .hero-content,
  .truth-grid,
  .about-intro,
  .combo-box {
    grid-template-columns: 1fr;
  }
  .pkg-grid,
  .pkg-detail-grid,
  .bb-grid,
  .bb-pkg-grid,
  .reviews-grid,
  .feature-grid,
  .advantage-grid,
  .contact-grid,
  .guide-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-text h1 {
    font-size: 36px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 50px 0;
  }
  .nav {
    display: none;
  }
  .header-btn {
    display: none;
  }
  .menu-toggle {
    display: inline-block;
  }
  .hero {
    padding: 40px 0 50px;
  }
  .hero-text h1 {
    font-size: 28px;
    text-align: center;
  }
  .hero-sub,
  .hero-desc {
    text-align: center;
  }
  .hero-tips {
    font-size: 13px;
  }
  .btn-hero {
    display: block;
    max-width: 300px;
    margin: 20px auto 0;
  }
  .section-title h2 {
    font-size: 24px;
  }
  .page-banner {
    padding: 50px 0 40px;
  }
  .page-banner h1 {
    font-size: 28px;
  }
  .pkg-grid,
  .pkg-detail-grid,
  .bb-grid,
  .bb-pkg-grid,
  .reviews-grid,
  .feature-grid,
  .advantage-grid,
  .contact-grid,
  .guide-grid,
  .scene-grid,
  .promise-grid,
  .stats-grid,
  .tips-grid,
  .contact-methods,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .pkg-card.featured,
  .pkg-detail-card.highlight,
  .bb-pkg-card.featured {
    transform: none;
  }
  .process-steps {
    flex-direction: column;
  }
  .step-arrow {
    transform: rotate(90deg);
    justify-content: center;
  }
  .bb-process {
    flex-direction: column;
  }
  .bb-step {
    min-width: 100%;
  }
  .truth-img,
  .about-img,
  .combo-img {
    min-height: 240px;
  }
  .cta-section h2 {
    font-size: 22px;
  }
  .btn-cta {
    padding: 14px 32px;
    font-size: 16px;
  }
  .notice-content {
    font-size: 13px;
  }
  .faq-question h3 {
    font-size: 14px;
  }
  .info-box {
    padding: 22px 20px;
  }
  .price-main span {
    font-size: 48px;
  }
  .stat-num {
    font-size: 32px;
  }
  .compare-table th,
  .compare-table td {
    padding: 12px 10px;
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 24px;
  }
  .logo-text {
    font-size: 17px;
  }
  .container {
    padding: 0 16px;
  }
  .price-card {
    padding: 24px 20px;
  }
}