/* roulang page: index */
/* =========================================================
   设计变量
   ========================================================= */
:root {
  --primary: #E84A2A;
  --primary-dark: #C9381A;
  --secondary: #17B890;
  --dark: #17181C;
  --light: #F7F5F2;
  --surface: #FFFFFF;
  --text: #1F2328;
  --text-body: #2E3338;
  --text-muted: #6A7078;
  --text-faint: #9CA3AB;
  --border: #ECEAE6;
  --radius-btn: 8px;
  --radius-card: 12px;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.05);
  --shadow-hover: 0 4px 12px rgba(0,0,0,0.06), 0 12px 28px rgba(0,0,0,0.10);
  --shadow-btn: 0 8px 20px rgba(232,74,42,0.25);
  --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --spacing-section: 96px;
  --spacing-mobile: 56px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-body);
  background: var(--surface);
  font-variant-numeric: tabular-nums;
}

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

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.25s ease;
}

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea {
  font-family: inherit;
}

h1, h2, h3, h4 {
  color: var(--text);
  line-height: 1.35;
  font-weight: 700;
}

/* =========================================================
   容器
   ========================================================= */
.container {
  max-width: 1200px;
  padding-left: 24px;
  padding-right: 24px;
  margin-left: auto;
  margin-right: auto;
}

.row {
  max-width: 1200px;
}

/* =========================================================
   导航
   ========================================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 72px;
  z-index: 1000;
  background: rgba(255,255,255,0.10);
  backdrop-filter: blur(16px) saturate(1.5);
  -webkit-backdrop-filter: blur(16px) saturate(1.5);
  border-bottom: 1px solid rgba(255,255,255,0.15);
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.site-header.scrolled {
  background: #FFFFFF;
  box-shadow: 0 4px 20px rgba(23,24,28,0.08);
  border-bottom-color: var(--border);
}

.nav-wrap {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

.brand svg {
  width: 28px;
  height: 28px;
  color: var(--primary);
}

.site-header.scrolled .brand {
  color: var(--text);
}

.brand .brand-text {
  display: inline-flex;
}

.brand .brand-text .accent {
  color: var(--primary);
}

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

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,0.92);
  padding: 6px 2px;
  position: relative;
  letter-spacing: 0.3px;
  transition: color 0.25s ease;
}

.site-header.scrolled .nav-link {
  color: var(--text);
}

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

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

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

.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

.site-header.scrolled .nav-link.active {
  color: var(--primary);
}

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

.nav-search {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: rgba(255,255,255,0.9);
  transition: background 0.25s ease, color 0.25s ease;
}

.site-header.scrolled .nav-search {
  color: var(--text);
}

.nav-search:hover {
  background: rgba(232,74,42,0.12);
  color: var(--primary);
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  padding: 8px;
  background: rgba(255,255,255,0.10);
}

.site-header.scrolled .hamburger {
  background: var(--light);
}

.hamburger span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: #FFFFFF;
  transition: all 0.3s ease;
}

.site-header.scrolled .hamburger span {
  background: var(--text);
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 移动端导航面板 */
.mobile-nav {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  width: 100%;
  background: #FFFFFF;
  box-shadow: 0 12px 30px rgba(0,0,0,0.10);
  padding: 20px 24px 32px;
  z-index: 999;
  border-bottom-left-radius: 12px;
  border-bottom-right-radius: 12px;
}

.mobile-nav.show {
  display: block;
}

.mobile-nav .nav-link {
  display: block;
  padding: 14px 8px;
  font-size: 18px;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

.mobile-nav .nav-link::after {
  display: none;
}

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

.mobile-nav .btn {
  margin-top: 20px;
  width: 100%;
  justify-content: center;
}

/* =========================================================
   按钮
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.3px;
  transition: all 0.25s ease;
  white-space: nowrap;
  border: 1px solid transparent;
}

.btn:active {
  transform: scale(0.97);
}

.btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.btn-primary {
  background: var(--primary);
  color: #FFFFFF;
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn);
}

.btn-outline-light {
  background: transparent;
  color: #FFFFFF;
  border-color: rgba(255,255,255,0.45);
}

.btn-outline-light:hover {
  background: rgba(255,255,255,0.10);
  border-color: #FFFFFF;
  color: #FFFFFF;
  transform: translateY(-2px);
}

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

.btn-outline-primary:hover {
  background: rgba(232,74,42,0.08);
  color: var(--primary-dark);
}

.btn-white {
  background: #FFFFFF;
  color: var(--dark);
  border-color: #FFFFFF;
}

.btn-white:hover {
  background: rgba(255,255,255,0.88);
  color: var(--dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255,255,255,0.18);
}

.btn-sm {
  height: 40px;
  padding: 0 20px;
  font-size: 14px;
}

.btn-lg {
  height: 52px;
  padding: 0 32px;
}

/* =========================================================
   徽章
   ========================================================= */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  background: var(--primary);
  color: #FFFFFF;
  line-height: 1.6;
}

.badge-secondary {
  background: rgba(23,184,144,0.12);
  color: var(--secondary);
}

/* =========================================================
   通用板块标题
   ========================================================= */
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 44px;
}

.section-title {
  font-size: clamp(22px, 2.4vw, 30px);
  color: var(--text);
  line-height: 1.3;
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-muted);
  margin-top: 8px;
  line-height: 1.6;
}

.section-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  flex-shrink: 0;
}

.section-link svg {
  width: 16px;
  height: 16px;
  transition: transform 0.25s ease;
}

.section-link:hover svg {
  transform: translateX(4px);
}

/* =========================================================
   Hero
   ========================================================= */
.hero {
  position: relative;
  background-color: var(--dark);
  background-image: linear-gradient(135deg, rgba(232,74,42,0.32), transparent 65%), url('/assets/images/backpic/back-1.webp'), radial-gradient(rgba(255,255,255,0.07) 1px, transparent 1px);
  background-size: cover, cover, 24px 24px;
  background-position: center;
  padding: 160px 0 120px;
  min-height: 680px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(23,24,28,0.55), rgba(23,24,28,0.25));
  z-index: 1;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: clamp(30px, 4vw, 42px);
  color: #FFFFFF;
  line-height: 1.3;
  margin-bottom: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.hero-subtitle {
  font-size: 16px;
  color: #C8CCD0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-bottom: 32px;
  line-height: 1.6;
}

.hero-subtitle span {
  position: relative;
  display: inline-block;
}

.hero-subtitle span + span {
  padding-left: 16px;
}

.hero-subtitle span + span::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--primary);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
}

.hero-trust {
  font-size: 13px;
  color: #8A9096;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-trust .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--secondary);
  display: inline-block;
}

/* 设备 Mockup */
.hero-device {
  position: relative;
  max-width: 340px;
  margin-left: auto;
  margin-right: auto;
}

.hero-device .device-frame {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 24px;
  padding: 12px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
  position: relative;
}

.hero-device .device-screen {
  border-radius: 16px;
  overflow: hidden;
}

.hero-device .device-screen img {
  width: 100%;
  height: auto;
}

.float-card {
  position: absolute;
  background: #FFFFFF;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.18);
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  animation: float 3.2s ease-in-out infinite;
}

.float-card svg {
  width: 16px;
  height: 16px;
  color: var(--secondary);
}

.float-card-1 {
  top: 40px;
  left: -40px;
}

.float-card-2 {
  bottom: 60px;
  right: -32px;
  animation-delay: 1.6s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* 滚动指示 */
.scroll-indicator {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 46px;
  border: 2px solid rgba(255,255,255,0.5);
  border-radius: 15px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
  z-index: 3;
}

.scroll-indicator::after {
  content: '';
  width: 4px;
  height: 10px;
  border-radius: 2px;
  background: #FFFFFF;
  animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(10px); opacity: 0.4; }
}

/* =========================================================
   数据横条
   ========================================================= */
.stats-bar {
  background: var(--light);
  border-bottom: 1px solid var(--border);
  padding: 28px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.stat-item {
  text-align: center;
  padding: 16px 12px;
}

.stat-number {
  font-size: clamp(28px, 3vw, 32px);
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  display: block;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
  display: block;
}

/* =========================================================
   核心功能轮播
   ========================================================= */
.features {
  background: var(--light);
  padding: var(--spacing-section) 0;
}

.slider-wrapper {
  position: relative;
}

.slider-controls {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.slider-arrow {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  transition: all 0.25s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.slider-arrow svg {
  width: 18px;
  height: 18px;
}

.slider-arrow:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #FFFFFF;
}

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

.feature-card {
  background: var(--surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.feature-img {
  position: relative;
  aspect-ratio: 3 / 3.4;
  overflow: hidden;
  background: var(--light);
}

.feature-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.feature-card:hover .feature-img img {
  transform: scale(1.04);
}

.feature-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(23,24,28,0.28), transparent 55%);
}

.feature-info {
  padding: 20px 24px 24px;
}

.feature-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.feature-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* =========================================================
   系统要求
   ========================================================= */
.sys-require {
  background: var(--surface);
  padding: var(--spacing-section) 0;
}

.req-card {
  background: var(--light);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  padding: 32px 28px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  height: 100%;
}

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

.req-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.req-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 700;
}

.req-icon.android {
  background: var(--secondary);
}

.req-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.req-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.req-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.req-item-point {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  margin-top: 9px;
  flex-shrink: 0;
}

.req-item.android .req-item-point {
  background: var(--secondary);
}

.req-item-name {
  font-size: 13px;
  color: var(--text-muted);
}

.req-item-value {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-top: 2px;
}

.req-note {
  font-size: 12px;
  color: var(--secondary);
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* =========================================================
   评价墙
   ========================================================= */
.testimonials {
  background: var(--dark);
  padding: var(--spacing-section) 0;
  position: relative;
  overflow: hidden;
}

.testimonials::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,74,42,0.22), transparent 70%);
}

.testimonials .section-title {
  color: #FFFFFF;
}

.testimonials .section-subtitle {
  color: #9CA3AB;
}

.rating-summary {
  text-align: right;
  flex-shrink: 0;
}

.rating-score {
  font-size: 48px;
  font-weight: 700;
  color: var(--secondary);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.rating-stars {
  display: flex;
  gap: 2px;
  margin-top: 6px;
  justify-content: flex-end;
}

.rating-stars svg {
  width: 16px;
  height: 16px;
  color: var(--secondary);
  fill: var(--secondary);
}

.rating-count {
  font-size: 13px;
  color: #9CA3AB;
  margin-top: 4px;
}

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

.review-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-card);
  padding: 24px;
  transition: background 0.3s ease;
}

.review-card:hover {
  background: rgba(255,255,255,0.10);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

.review-name {
  font-size: 14px;
  font-weight: 600;
  color: #FFFFFF;
}

.review-role {
  font-size: 12px;
  color: #8A9096;
}

.review-stars {
  display: flex;
  gap: 2px;
  margin-top: 2px;
}

.review-stars svg {
  width: 14px;
  height: 14px;
  color: var(--secondary);
  fill: var(--secondary);
}

.review-text {
  font-size: 14px;
  color: #C8CCD0;
  line-height: 1.7;
}

.testimonials-footer {
  text-align: center;
  margin-top: 36px;
}

/* =========================================================
   FAQ
   ========================================================= */
.faq {
  background: var(--light);
  padding: var(--spacing-section) 0;
}

.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-item:first-child {
  border-top: 1px solid var(--border);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  width: 100%;
  text-align: left;
  transition: color 0.25s ease;
}

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

.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: var(--light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-muted);
  transition: all 0.3s ease;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
  border-color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.75;
}

.faq-item.active .faq-answer {
  max-height: 400px;
  padding-bottom: 22px;
}

/* =========================================================
   最新资讯 CMS区
   ========================================================= */
.news-section {
  background: var(--surface);
  padding: var(--spacing-section) 0;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.news-card {
  display: flex;
  align-items: stretch;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  text-decoration: none;
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(232,74,42,0.25);
}

.news-date-box {
  width: 90px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--light);
  border-right: 1px solid var(--border);
  padding: 16px 8px;
  text-align: center;
}

.news-date-box .date-month {
  font-size: 13px;
  color: var(--text-muted);
}

.news-date-box .date-day {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.news-card-body {
  padding: 18px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1;
  min-width: 0;
}

.news-meta-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.news-time {
  font-size: 13px;
  color: var(--text-faint);
}

.news-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
  transition: color 0.25s ease;
  margin-bottom: 4px;
}

.news-card:hover .news-title {
  color: var(--primary);
}

.news-excerpt {
  font-size: 14px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
  line-height: 1.6;
}

.news-empty {
  padding: 60px 20px;
  text-align: center;
  color: var(--text-muted);
  background: var(--light);
  border-radius: var(--radius-card);
  border: 1px dashed var(--border);
  font-size: 15px;
}

.news-empty svg {
  width: 42px;
  height: 42px;
  margin: 0 auto 12px;
  display: block;
  color: var(--text-faint);
}

/* =========================================================
   最终 CTA
   ========================================================= */
.final-cta {
  background: var(--dark);
  padding: var(--spacing-section) 0;
  position: relative;
  overflow: hidden;
  text-align: center;
  background-image: radial-gradient(circle at 50% 100%, rgba(232,74,42,0.30), transparent 60%);
}

.final-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 24px 24px;
}

.final-cta .container {
  position: relative;
  z-index: 2;
}

.cta-title {
  font-size: clamp(26px, 3vw, 32px);
  color: #FFFFFF;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.35;
}

.cta-desc {
  font-size: 15px;
  color: #C8CCD0;
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.cta-buttons .btn {
  min-width: 150px;
}

/* =========================================================
   页脚
   ========================================================= */
.footer {
  background: var(--dark);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 64px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand-title {
  font-size: 18px;
  font-weight: 700;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer-brand-title svg {
  width: 24px;
  height: 24px;
  color: var(--primary);
}

.footer-desc {
  font-size: 14px;
  color: #9CA3AB;
  line-height: 1.7;
  margin-top: 12px;
}

.footer-heading {
  font-size: 15px;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: #9CA3AB;
  transition: color 0.25s ease;
}

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

.footer-contact {
  list-style: none;
}

.footer-contact li {
  font-size: 14px;
  color: #9CA3AB;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 10px;
}

.footer-contact svg {
  width: 16px;
  height: 16px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 4px;
}

.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-copyright {
  font-size: 13px;
  color: #6A7078;
}

.footer-icp {
  font-size: 13px;
  color: #6A7078;
}

/* =========================================================
   动效与可访问性
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 768px) {
  .primary-nav {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .nav-search {
    display: none;
  }

  .mobile-nav.show {
    display: block;
  }
}

/* =========================================================
   响应式断点
   ========================================================= */
@media (max-width: 1024px) {
  :root {
    --spacing-section: 72px;
  }

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

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

  .footer-top {
    grid-template-columns: 1fr 1fr;
  }

  .hero {
    padding: 140px 0 110px;
  }

  .float-card-1 {
    left: -8px;
  }

  .float-card-2 {
    right: -8px;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-section: 56px;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 32px;
  }

  .slider-track {
    display: flex;
    overflow-x: auto;
    gap: 16px;
    scroll-snap-type: x mandatory;
    padding-bottom: 16px;
    margin-bottom: -16px;
    -webkit-overflow-scrolling: touch;
  }

  .slider-track .feature-card {
    flex: 0 0 280px;
    scroll-snap-align: start;
  }

  .rating-summary {
    text-align: left;
  }

  .rating-stars {
    justify-content: flex-start;
  }

  .btn {
    width: 100%;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .cta-buttons .btn {
    width: 100%;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .hero {
    padding: 120px 0 80px;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-subtitle {
    font-size: 14px;
    flex-direction: column;
    gap: 6px;
  }

  .hero-subtitle span + span {
    padding-left: 0;
  }

  .hero-subtitle span + span::before {
    display: none;
  }

  .float-card-1 {
    top: 20px;
    left: -4px;
  }

  .float-card-2 {
    bottom: 40px;
    right: -4px;
  }

  .review-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .news-card {
    flex-direction: column;
  }

  .news-date-box {
    width: 100%;
    flex-direction: row;
    justify-content: flex-start;
    gap: 10px;
    padding: 10px 24px;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .news-date-box .date-day {
    font-size: 20px;
  }
}

@media (max-width: 520px) {
  .slider-track .feature-card {
    flex: 0 0 240px;
  }

  .hero-device {
    max-width: 260px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .stat-number {
    font-size: 24px;
  }
}

/* =========================================================
   Foundation 修正
   ========================================================= */
.row {
  margin-left: auto;
  margin-right: auto;
}

.column, .columns {
  padding-left: 12px;
  padding-right: 12px;
}

/* focus 状态 */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* roulang page: article */
:root{
  --primary:#E84A2A;
  --primary-dark:#C9381A;
  --secondary:#17B890;
  --dark:#17181C;
  --light:#F7F5F2;
  --surface:#FFFFFF;
  --text-main:#1F2328;
  --text-body:#2E3338;
  --text-sub:#6A7078;
  --text-muted:#9CA3AB;
  --line:#ECEAE6;
  --radius-btn:8px;
  --radius-card:12px;
  --shadow-card:0 1px 3px rgba(0,0,0,0.04),0 4px 12px rgba(0,0,0,0.05);
  --shadow-hover:0 4px 12px rgba(0,0,0,0.06),0 12px 28px rgba(0,0,0,0.10);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text-body);
  background:var(--light);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .25s ease}
ul,ol{list-style:none}
button,input,textarea{font-family:inherit;font-size:inherit}
.container{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.row{max-width:1200px;margin:0 auto}
.columns{padding-left:12px;padding-right:12px}

/* buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:none;
  border-radius:var(--radius-btn);
  padding:12px 28px;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:background .25s,transform .2s,box-shadow .25s,border-color .25s,color .25s;
  line-height:1.4;
  white-space:nowrap;
}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover,.btn-primary:focus{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 20px rgba(232,74,42,.25)}
.btn-outline{background:transparent;color:var(--primary);border:1px solid var(--primary)}
.btn-outline:hover{background:rgba(232,74,42,.08)}
.btn-sm{height:40px;padding:0 20px;font-size:14px;border-radius:var(--radius-btn)}
.btn-block{width:100%}

/* header & nav */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  height:72px;
  background:rgba(255,255,255,.1);
  backdrop-filter:blur(16px) saturate(1.5);
  -webkit-backdrop-filter:blur(16px) saturate(1.5);
  border-bottom:1px solid rgba(255,255,255,.15);
  transition:background .3s ease,box-shadow .3s ease,border-color .3s ease;
}
.site-header.scrolled{
  background:#fff;
  box-shadow:0 4px 20px rgba(23,24,28,.08);
  border-bottom-color:var(--line);
}
.header-row{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand-logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:16px;
  font-weight:700;
  color:#fff;
  transition:color .3s;
  flex-shrink:0;
}
.brand-logo svg{width:30px;height:30px}
.scrolled .brand-logo,.article-template .brand-logo{color:var(--text-main)}
.brand-logo em{font-style:normal;color:var(--primary)}
.primary-nav{
  display:flex;
  align-items:center;
  gap:28px;
  margin-right:auto;
  margin-left:32px;
}
.nav-link{
  position:relative;
  font-size:14px;
  font-weight:500;
  color:#fff;
  padding:6px 2px;
  transition:color .25s;
}
.scrolled .nav-link,.article-template .nav-link{color:var(--text-main)}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--primary);
  border-radius:2px;
  transition:width .3s ease;
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after,.nav-link.active::after{width:100%}
.nav-link.active{color:var(--primary)}
.header-actions{
  display:flex;
  align-items:center;
  gap:14px;
  flex-shrink:0;
}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:42px;height:42px;
  background:transparent;
  border:1px solid rgba(255,255,255,.3);
  border-radius:8px;
  cursor:pointer;
  padding:10px;
}
.nav-toggle span{
  display:block;
  height:2px;
  width:100%;
  background:#fff;
  border-radius:2px;
  transition:transform .3s,opacity .3s;
}
.scrolled .nav-toggle,.article-template .nav-toggle{border-color:var(--line)}
.scrolled .nav-toggle span,.article-template .nav-toggle span{background:var(--text-main)}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* mobile menu panel */
.mobile-menu{
  position:fixed;
  top:72px;left:0;right:0;
  background:#fff;
  padding:24px;
  transform:translateY(-120%);
  transition:transform .35s ease;
  box-shadow:0 20px 40px rgba(0,0,0,.12);
  z-index:999;
  border-bottom:1px solid var(--line);
}
.mobile-menu.open{transform:translateY(0)}
.mobile-menu .nav-link{
  display:block;
  color:var(--text-main);
  font-size:18px;
  padding:14px 0;
  border-bottom:1px solid var(--line);
}
.mobile-menu .nav-link:last-child{border-bottom:none}
.mobile-menu .btn{margin-top:16px}

/* breadcrumb */
.breadcrumb-bar{
  background:#fff;
  border-bottom:1px solid var(--line);
  padding:88px 0 16px;
  margin-top:0;
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-muted);
}
.breadcrumb a{color:var(--text-sub)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-muted)}
.breadcrumb .current{
  color:var(--primary);
  max-width:280px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

/* article layout */
.article-page{
  background:var(--light);
  padding:32px 0 0;
}
.article-container{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
.article-main{
  background:#fff;
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:40px;
  margin-bottom:32px;
}
.article-header{
  margin-bottom:24px;
  padding-bottom:24px;
  border-bottom:1px solid var(--line);
}
.article-header h1{
  font-size:clamp(24px,3vw,32px);
  font-weight:700;
  color:var(--text-main);
  line-height:1.35;
  margin-bottom:16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-muted);
}
.meta-item{
  display:inline-flex;
  align-items:center;
  gap:4px;
}
.meta-cat{
  display:inline-flex;
  align-items:center;
  background:rgba(232,74,42,.1);
  color:var(--primary);
  font-size:12px;
  font-weight:600;
  padding:2px 8px;
  border-radius:4px;
}
.article-content{
  font-size:16px;
  line-height:1.8;
  color:var(--text-body);
  word-break:break-word;
}
.article-content h2{
  font-size:22px;
  font-weight:700;
  color:var(--text-main);
  border-left:4px solid var(--primary);
  padding-left:12px;
  margin:36px 0 16px;
  line-height:1.4;
}
.article-content h3{
  font-size:18px;
  font-weight:600;
  color:var(--text-main);
  margin:28px 0 12px;
  line-height:1.4;
}
.article-content p{
  margin-bottom:1em;
}
.article-content img{
  max-width:100%;
  height:auto;
  border-radius:8px;
  margin:20px 0;
}
.article-content figure{
  margin:20px 0;
}
.article-content figcaption{
  font-size:13px;
  color:var(--text-muted);
  text-align:center;
  margin-top:8px;
}
.article-content blockquote{
  font-size:14px;
  color:var(--text-sub);
  border-left:3px solid var(--primary);
  background:var(--light);
  padding:16px 20px;
  margin:20px 0;
  border-radius:0 8px 8px 0;
}
.article-content ul,.article-content ol{
  margin:16px 0;
  padding-left:24px;
}
.article-content ul{list-style:disc}
.article-content ol{list-style:decimal}
.article-content li{
  margin-bottom:.5em;
}
.article-content a{
  color:var(--primary);
  text-decoration:underline;
  text-underline-offset:2px;
}
.article-content a:hover{color:var(--primary-dark)}
.article-content table{
  width:100%;
  border-collapse:collapse;
  margin:20px 0;
  font-size:14px;
}
.article-content table th,.article-content table td{
  border:1px solid var(--line);
  padding:10px 14px;
  text-align:left;
}
.article-content table th{
  background:var(--light);
  font-weight:600;
  color:var(--text-main);
}

/* article footer tools */
.article-footer-tools{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px;
  margin-top:32px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.tag-group{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
}
.tag{
  display:inline-flex;
  align-items:center;
  font-size:12px;
  padding:4px 12px;
  color:var(--primary);
  border:1px solid rgba(232,74,42,.4);
  border-radius:20px;
  background:rgba(232,74,42,.04);
  transition:background .2s,color .2s;
}
.tag:hover{background:var(--primary);color:#fff}
.share-group{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--text-sub);
}
.share-btn{
  width:36px;height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:var(--light);
  border:1px solid var(--line);
  color:var(--text-sub);
  font-size:13px;
  cursor:pointer;
  transition:background .2s,color .2s,border-color .2s;
}
.share-btn:hover{
  background:var(--primary);
  color:#fff;
  border-color:var(--primary);
}

/* not found */
.article-not-found{
  text-align:center;
  padding:80px 20px;
}
.article-not-found p{
  font-size:20px;
  font-weight:600;
  color:var(--text-main);
  margin-bottom:24px;
}

/* related section */
.related-section{
  background:#fff;
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:32px;
  margin-bottom:32px;
}
.related-section h2{
  font-size:20px;
  font-weight:700;
  color:var(--text-main);
  margin-bottom:24px;
  padding-left:12px;
  border-left:4px solid var(--primary);
}
.related-card{
  display:block;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  margin-bottom:20px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s;
}
.related-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(232,74,42,.3);
}
.related-img{
  height:140px;
  overflow:hidden;
  background:var(--light);
}
.related-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .4s ease;
}
.related-card:hover .related-img img{
  transform:scale(1.05);
}
.related-card h3{
  font-size:15px;
  font-weight:600;
  color:var(--text-main);
  line-height:1.5;
  padding:14px 16px 6px;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.related-card .related-date{
  display:block;
  font-size:13px;
  color:var(--text-muted);
  padding:0 16px 14px;
}
.back-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:var(--text-sub);
  margin-top:8px;
}
.back-link:hover{color:var(--primary)}

/* sidebar */
.article-sidebar{
  position:sticky;
  top:96px;
}
.sidebar-card{
  background:#fff;
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:24px;
  margin-bottom:24px;
}
.sidebar-card h3{
  font-size:16px;
  font-weight:700;
  color:var(--text-main);
  padding-bottom:12px;
  margin-bottom:16px;
  border-bottom:1px solid var(--line);
}
.hot-list li{
  margin-bottom:12px;
}
.hot-list a{
  display:flex;
  gap:10px;
  font-size:14px;
  color:var(--text-body);
  line-height:1.5;
  transition:color .2s;
}
.hot-list a:hover{color:var(--primary)}
.hot-list .hot-num{
  flex-shrink:0;
  width:22px;height:22px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--light);
  color:var(--text-muted);
  font-size:12px;
  border-radius:6px;
  margin-top:2px;
}
.hot-list li:nth-child(-n+3) .hot-num{
  background:var(--primary);
  color:#fff;
}
.sidebar-ad{
  background:linear-gradient(135deg,var(--dark),#2a2c33);
  border-radius:var(--radius-card);
  padding:24px;
  text-align:center;
  color:#fff;
}
.sidebar-ad h4{
  font-size:16px;
  font-weight:700;
  margin-bottom:8px;
}
.sidebar-ad p{
  font-size:13px;
  color:rgba(255,255,255,.7);
  margin-bottom:16px;
}

/* footer */
.footer{
  background:var(--dark);
  color:rgba(255,255,255,.8);
  padding:72px 0 0;
  margin-top:32px;
}
.footer .container{max-width:1200px;padding:0 24px}
.footer-top{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-brand-title{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:#fff;
  margin-bottom:16px;
}
.footer-brand-title svg{width:28px;height:28px;color:var(--primary)}
.footer-desc{
  font-size:14px;
  line-height:1.7;
  color:rgba(255,255,255,.6);
  max-width:360px;
}
.footer-heading{
  font-size:15px;
  font-weight:600;
  color:#fff;
  margin-bottom:16px;
}
.footer-links{
  display:grid;
  gap:8px;
}
.footer-links a{
  font-size:14px;
  color:rgba(255,255,255,.55);
  transition:color .2s;
}
.footer-links a:hover{color:var(--primary)}
.footer-contact{
  display:grid;
  gap:12px;
}
.footer-contact li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:rgba(255,255,255,.55);
}
.footer-contact svg{width:18px;height:18px;color:var(--primary);flex-shrink:0}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  padding:24px 0;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;
  color:rgba(255,255,255,.4);
}

/* responsive */
@media (max-width:1024px){
  .footer-top{grid-template-columns:1fr 1fr}
  .primary-nav{margin-left:16px;gap:18px}
}
@media (max-width:768px){
  .primary-nav{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn{display:none}
  .article-main{padding:24px}
  .related-section{padding:20px}
  .article-sidebar{position:static;margin-top:24px}
  .footer-top{grid-template-columns:1fr;gap:32px}
  .breadcrumb-bar{padding-top:80px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .article-main{padding:20px}
  .article-footer-tools{flex-direction:column;align-items:flex-start}
  .related-card h3{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
  .footer-bottom{flex-direction:column;align-items:center;text-align:center}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root {
      --color-primary: #E84A2A;
      --color-primary-dark: #C9381A;
      --color-secondary: #17B890;
      --color-bg-dark: #17181C;
      --color-bg-light: #F7F5F2;
      --color-bg-white: #FFFFFF;
      --color-text: #2E3338;
      --color-text-title: #1F2328;
      --color-text-secondary: #6A7078;
      --color-text-muted: #9CA3AB;
      --color-border: #ECEAE6;
      --color-text-on-dark: #C8CCD0;
      --color-text-on-dark-muted: #8A9096;
      --radius-card: 12px;
      --radius-btn: 8px;
      --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.05);
      --shadow-card-hover: 0 4px 12px rgba(0,0,0,0.06), 0 12px 28px rgba(0,0,0,0.10);
      --shadow-btn-primary: 0 8px 20px rgba(232,74,42,0.25);
      --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      --section-space: 96px;
      --section-space-mobile: 56px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-family);
      background: #fff;
      color: var(--color-text);
      font-size: 15px;
      line-height: 1.7;
      margin: 0;
      -webkit-font-smoothing: antialiased;
    }

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

    button {
      font-family: inherit;
      cursor: pointer;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    .row {
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
    }

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

    .section {
      padding: var(--section-space) 0;
    }

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

    .section-head {
      margin-bottom: 48px;
      max-width: 760px;
    }

    .section-title {
      font-size: clamp(22px, 2.4vw, 30px);
      font-weight: 700;
      line-height: 1.35;
      color: var(--color-text-title);
      margin-bottom: 8px;
    }

    .section-sub {
      font-size: 15px;
      line-height: 1.7;
      color: var(--color-text-secondary);
      margin: 0;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border-radius: var(--radius-btn);
      padding: 12px 28px;
      font-size: 15px;
      font-weight: 600;
      border: 1px solid transparent;
      cursor: pointer;
      text-decoration: none;
      transition: all 0.25s ease;
      line-height: 1;
      font-variant-numeric: tabular-nums;
      white-space: nowrap;
    }

    .btn:active {
      transform: scale(0.97);
    }

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

    .btn-primary:hover,
    .btn-primary:focus {
      background: var(--color-primary-dark);
      transform: translateY(-2px);
      box-shadow: var(--shadow-btn-primary);
    }

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

    .btn-outline:hover,
    .btn-outline:focus {
      background: rgba(232, 74, 42, 0.08);
    }

    .btn-light-outline {
      background: transparent;
      border-color: rgba(255, 255, 255, 0.75);
      color: #fff;
    }

    .btn-light-outline:hover,
    .btn-light-outline:focus {
      background: rgba(255, 255, 255, 0.12);
    }

    .btn-lg {
      height: 48px;
      padding: 0 32px;
      font-size: 16px;
    }

    .btn-sm {
      height: 40px;
      padding: 0 20px;
      font-size: 14px;
    }

    .btn-block {
      width: 100%;
    }

    .grid-y-gap > .columns {
      margin-bottom: 24px;
    }

    .grid-y-gap > .columns:last-child {
      margin-bottom: 0;
    }

    .row.grid-y-gap > .columns {
      display: flex;
    }

    .row.grid-y-gap > .columns > div {
      width: 100%;
    }

    /* ========== Header / Nav ========== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      z-index: 1000;
      background: rgba(247, 245, 242, 0.72);
      backdrop-filter: blur(16px) saturate(1.5);
      -webkit-backdrop-filter: blur(16px) saturate(1.5);
      border-bottom: 1px solid rgba(31, 35, 40, 0.08);
      transition: background 0.3s ease, box-shadow 0.3s ease;
    }

    .site-header.scrolled {
      background: var(--color-bg-white);
      box-shadow: 0 4px 20px rgba(23, 24, 28, 0.08);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      gap: 24px;
      position: relative;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 17px;
      font-weight: 700;
      color: var(--color-text-title);
      text-decoration: none;
      white-space: nowrap;
    }

    .brand svg {
      width: 28px;
      height: 28px;
      color: var(--color-primary);
      display: block;
    }

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

    .nav-link {
      position: relative;
      font-size: 14px;
      font-weight: 500;
      color: var(--color-text-title);
      text-decoration: none;
      padding: 6px 2px;
      transition: color 0.2s ease;
    }

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

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

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

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

    .search-btn {
      width: 40px;
      height: 40px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-btn);
      border: 1px solid transparent;
      background: transparent;
      color: var(--color-text-title);
      cursor: pointer;
      transition: background 0.2s ease, color 0.2s ease;
    }

    .search-btn:hover,
    .search-btn:focus {
      background: rgba(232, 74, 42, 0.08);
      color: var(--color-primary);
      outline: none;
    }

    .btn-nav {
      height: 40px;
      padding: 0 20px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--radius-btn);
      font-size: 14px;
      font-weight: 600;
    }

    .nav-cta-mobile {
      display: none;
    }

    .nav-toggle {
      display: none;
      width: 40px;
      height: 40px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-btn);
      background: #fff;
      color: var(--color-text-title);
      align-items: center;
      justify-content: center;
    }

    .nav-toggle svg {
      width: 20px;
      height: 20px;
    }

    /* ========== Page Hero ========== */
    .page-hero {
      position: relative;
      background: var(--color-bg-light);
      padding: 160px 0 80px;
      overflow: hidden;
    }

    .page-hero::before {
      content: "";
      position: absolute;
      top: -160px;
      right: -100px;
      width: 560px;
      height: 560px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(232, 74, 42, 0.18), transparent 70%);
      pointer-events: none;
    }

    .hero-breadcrumb {
      font-size: 13px;
      color: var(--color-text-secondary);
      margin-bottom: 16px;
    }

    .hero-breadcrumb a {
      color: var(--color-text-secondary);
      text-decoration: none;
      transition: color 0.2s;
    }

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

    .page-hero h1 {
      font-size: clamp(26px, 3vw, 30px);
      font-weight: 700;
      color: var(--color-text-title);
      line-height: 1.35;
      margin-bottom: 12px;
    }

    .hero-sub {
      font-size: 16px;
      font-weight: 500;
      color: var(--color-primary);
      margin-bottom: 16px;
    }

    .hero-desc {
      font-size: 15px;
      line-height: 1.8;
      color: var(--color-text);
      margin-bottom: 28px;
      max-width: 620px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .hero-media {
      position: relative;
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: 0 12px 32px rgba(0, 0, 0, 0.10);
    }

    .hero-media img {
      width: 100%;
      height: 340px;
      object-fit: cover;
      display: block;
    }

    .float-tag {
      position: absolute;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #fff;
      border-radius: 12px;
      padding: 8px 14px;
      font-size: 13px;
      font-weight: 600;
      color: var(--color-text-title);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
      pointer-events: none;
    }

    .float-tag i {
      color: var(--color-primary);
      font-size: 14px;
    }

    .float-tag-1 {
      top: 20px;
      left: 20px;
    }

    .float-tag-2 {
      bottom: 24px;
      right: 20px;
    }

    /* ========== Stats ========== */
    .stats-bar {
      background: var(--color-bg-dark);
      padding: 56px 0;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .stat-item {
      text-align: center;
      padding: 8px;
    }

    .stat-number {
      font-size: 32px;
      font-weight: 700;
      color: var(--color-primary);
      font-variant-numeric: tabular-nums;
      line-height: 1.2;
    }

    .stat-label {
      font-size: 13px;
      color: var(--color-text-on-dark);
      margin-top: 4px;
    }

    /* ========== Feature Cards ========== */
    .feature-card {
      background: var(--color-bg-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      padding: 28px;
      box-shadow: var(--shadow-card);
      transition: all 0.25s ease;
      height: 100%;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-card-hover);
      border-color: #d8d4ce;
    }

    .feature-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      margin-bottom: 16px;
    }

    .feature-icon.primary {
      background: var(--color-primary);
    }

    .feature-icon.secondary {
      background: var(--color-secondary);
    }

    .feature-card h3 {
      font-size: 17px;
      font-weight: 600;
      color: var(--color-text-title);
      margin-bottom: 8px;
    }

    .feature-card p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.75;
      margin: 0;
    }

    /* ========== Scenes ========== */
    .scenes-section {
      background: var(--color-bg-dark);
      padding: var(--section-space) 0;
    }

    .scenes-section .section-title {
      color: #fff;
    }

    .scenes-section .section-sub {
      color: var(--color-text-on-dark);
    }

    .scene-card {
      display: flex;
      gap: 20px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.10);
      border-radius: var(--radius-card);
      padding: 20px;
      transition: background 0.25s ease;
      height: 100%;
    }

    .scene-card:hover {
      background: rgba(255, 255, 255, 0.10);
    }

    .scene-thumb {
      flex: 0 0 160px;
    }

    .scene-thumb img {
      width: 160px;
      height: 104px;
      object-fit: cover;
      border-radius: 8px;
      display: block;
    }

    .scene-body h3 {
      font-size: 16px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 6px;
    }

    .scene-body p {
      font-size: 14px;
      color: var(--color-text-on-dark);
      line-height: 1.7;
      margin: 0;
    }

    /* ========== Steps ========== */
    .step-item {
      position: relative;
      padding: 32px 24px 24px;
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      transition: box-shadow 0.25s ease, transform 0.25s ease;
      height: 100%;
    }

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

    .step-num {
      font-size: 28px;
      font-weight: 700;
      color: var(--color-primary);
      line-height: 1;
      margin-bottom: 12px;
      font-variant-numeric: tabular-nums;
    }

    .step-item h3 {
      font-size: 17px;
      font-weight: 600;
      color: var(--color-text-title);
      margin-bottom: 8px;
    }

    .step-item p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.75;
      margin: 0;
    }

    /* ========== FAQ ========== */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      border-bottom: 1px solid var(--color-border);
    }

    .faq-item:first-child {
      border-top: 1px solid var(--color-border);
    }

    .faq-question {
      position: relative;
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 20px 40px 20px 0;
      font-size: 16px;
      font-weight: 600;
      color: var(--color-text-title);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      transition: color 0.2s ease;
    }

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

    .faq-question::after {
      content: "+";
      font-size: 22px;
      font-weight: 400;
      color: var(--color-text-muted);
      transition: transform 0.3s ease, color 0.3s ease;
      flex-shrink: 0;
    }

    .faq-item.active .faq-question::after {
      transform: rotate(45deg);
      color: var(--color-primary);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
    }

    .faq-item.active .faq-answer {
      max-height: 400px;
    }

    .faq-answer-inner {
      padding: 0 40px 20px 0;
      font-size: 15px;
      color: var(--color-text);
      line-height: 1.75;
    }

    /* ========== CTA ========== */
    .cta-section {
      position: relative;
      background: var(--color-bg-dark);
      padding: var(--section-space) 0;
      text-align: center;
      overflow: hidden;
    }

    .cta-section::before {
      content: "";
      position: absolute;
      top: -180px;
      left: 50%;
      transform: translateX(-50%);
      width: 760px;
      height: 760px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(232, 74, 42, 0.25), transparent 70%);
      pointer-events: none;
    }

    .cta-title {
      font-size: clamp(26px, 2.6vw, 30px);
      color: #fff;
      font-weight: 700;
      margin-bottom: 12px;
      position: relative;
    }

    .cta-desc {
      font-size: 15px;
      color: var(--color-text-on-dark);
      margin-bottom: 32px;
      position: relative;
    }

    .cta-buttons {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 16px;
      position: relative;
    }

    .cta-buttons .btn {
      min-height: 48px;
    }

    /* ========== Footer ========== */
    .footer {
      background: var(--color-bg-dark);
      padding: 64px 0 0;
      color: var(--color-text-muted);
    }

    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 40px;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-brand-title {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
    }

    .footer-brand-title svg {
      width: 24px;
      height: 24px;
      color: var(--color-primary);
    }

    .footer-desc {
      font-size: 14px;
      line-height: 1.7;
      color: var(--color-text-muted);
      max-width: 320px;
      margin: 0;
    }

    .footer-heading {
      font-size: 14px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 16px;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      font-size: 14px;
      color: var(--color-text-muted);
      text-decoration: none;
      transition: color 0.2s ease;
    }

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

    .footer-contact {
      list-style: none;
      margin: 0;
      padding: 0;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .footer-contact li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: var(--color-text-muted);
    }

    .footer-contact svg {
      width: 18px;
      height: 18px;
      color: var(--color-primary);
      flex-shrink: 0;
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 20px 0;
    }

    .footer-copyright,
    .footer-icp {
      font-size: 13px;
      color: #6A7078;
    }

    /* ========== Responsive ========== */
    @media (max-width: 1024px) {
      .page-hero {
        padding: 140px 0 64px;
      }

      .hero-media img {
        height: 280px;
      }

      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
      }

      .search-btn {
        display: none;
      }

      .header-actions .btn-nav {
        display: none;
      }

      .nav-cta-mobile {
        display: flex;
        margin-top: 12px;
      }

      .nav-toggle {
        display: inline-flex;
      }

      .primary-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 12px 24px 20px;
        gap: 4px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: 0 20px 30px rgba(0, 0, 0, 0.10);
        transform: translateY(-12px) scaleY(0.98);
        transform-origin: top;
        opacity: 0;
        visibility: hidden;
        transition: all 0.25s ease;
        border-radius: 0 0 12px 12px;
      }

      .primary-nav.open {
        transform: translateY(0) scaleY(1);
        opacity: 1;
        visibility: visible;
      }

      .nav-link {
        display: block;
        padding: 12px 4px;
        font-size: 16px;
        border-bottom: 1px solid #F0EEEB;
      }

      .nav-link:last-of-type {
        border-bottom: none;
      }

      .nav-link::after {
        display: none;
      }

      .scene-card {
        flex-direction: column;
      }

      .scene-thumb {
        flex: none;
      }

      .scene-thumb img {
        width: 100%;
        height: 140px;
      }

      .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
    }

    @media (max-width: 640px) {
      .section {
        padding: var(--section-space-mobile) 0;
      }

      .scenes-section {
        padding: var(--section-space-mobile) 0;
      }

      .cta-section {
        padding: var(--section-space-mobile) 0;
      }

      .page-hero {
        padding: 112px 0 48px;
      }

      .page-hero h1 {
        font-size: 26px;
      }

      .hero-media img {
        height: 220px;
      }

      .hero-actions .btn {
        width: 100%;
      }

      .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
      }

      .stat-number {
        font-size: 26px;
      }

      .footer-top {
        grid-template-columns: 1fr;
        gap: 24px;
        padding-bottom: 24px;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }

      .cta-buttons .btn {
        width: 100%;
      }
    }

    /* ========== Reduced Motion ========== */
    @media (prefers-reduced-motion: reduce) {
      * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
      }
    }