@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&family=ZCOOL+XiaoWei&display=swap');

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

:root {
  --primary: #00838f;
  --secondary: #26c6da;
  --bg-light: #e0f7fa;
  --text-dark: #004d40;
  --white: #ffffff;
  --gray-50: #f0f9fa;
  --gray-100: #b2ebf2;
  --gray-200: #80deea;
  --shadow-sm: 0 2px 8px rgba(0, 131, 143, 0.12);
  --shadow-md: 0 6px 20px rgba(0, 131, 143, 0.18);
  --shadow-lg: 0 12px 40px rgba(0, 131, 143, 0.25);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --gradient-main: linear-gradient(135deg, #00838f 0%, #26c6da 100%);
  --gradient-dark: linear-gradient(135deg, #004d40 0%, #00838f 100%);
  --gradient-bg: linear-gradient(180deg, #e0f7fa 0%, #ffffff 50%, #e0f7fa 100%);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-dark);
  background: var(--gradient-bg);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

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

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

/* ========== Header & Navigation ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(38, 198, 218, 0.15);
  box-shadow: var(--shadow-sm);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dark);
}

.logo-icon {
  width: 44px;
  height: 44px;
  background: var(--gradient-main);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.4rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.logo-icon::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(45deg, #26c6da, transparent, #00838f);
  animation: spin 4s linear infinite;
  z-index: -1;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.logo-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-link {
  position: relative;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-dark);
  transition: all 0.3s ease;
}

.nav-link:hover {
  color: var(--primary);
  background: rgba(38, 198, 218, 0.1);
}

.nav-link.active {
  color: var(--primary);
  background: rgba(38, 198, 218, 0.15);
  font-weight: 700;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  background: var(--gradient-main);
  border-radius: 2px;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--primary);
  cursor: pointer;
}

/* ========== Hero Section ========== */
.hero {
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 10%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(38, 198, 218, 0.25), transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 5%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 131, 143, 0.2), transparent 70%);
  border-radius: 50%;
  animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-30px) rotate(5deg); }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content h1 .highlight {
  position: relative;
  display: inline-block;
}

.hero-content h1 .highlight::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  height: 10px;
  background: rgba(38, 198, 218, 0.3);
  z-index: -1;
  border-radius: 4px;
}

.hero-content p {
  font-size: 1.15rem;
  color: #006064;
  margin-bottom: 32px;
  line-height: 1.8;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: 999px;
  font-size: 0.88rem;
  color: var(--primary);
  font-weight: 500;
  box-shadow: var(--shadow-sm);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--secondary);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--gradient-main);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: var(--white);
  color: var(--primary);
  border: 2px solid var(--secondary);
}

.btn-outline:hover {
  background: var(--bg-light);
  transform: translateY(-2px);
}

.btn-large {
  padding: 18px 40px;
  font-size: 1.1rem;
}

/* ========== Browser Mockup ========== */
.browser-mockup {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid rgba(38, 198, 218, 0.2);
  position: relative;
}

.browser-mockup::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: var(--gradient-main);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  z-index: 1;
}

.browser-topbar {
  background: linear-gradient(180deg, #f0f9fa, #e0f7fa);
  padding: 14px 16px;
  border-bottom: 1px solid rgba(38, 198, 218, 0.15);
}

.browser-dots {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.browser-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.browser-dots span:nth-child(1) { background: #ef5350; }
.browser-dots span:nth-child(2) { background: #ffca28; }
.browser-dots span:nth-child(3) { background: #66bb6a; }

.browser-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
}

.toolbar-btn {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 0.9rem;
  border: 1px solid rgba(38, 198, 218, 0.2);
}

.toolbar-url {
  flex: 1;
  height: 32px;
  background: var(--white);
  border-radius: 8px;
  border: 1px solid rgba(38, 198, 218, 0.2);
  display: flex;
  align-items: center;
  padding: 0 14px;
  font-size: 0.85rem;
  color: #006064;
}

.browser-content {
  padding: 32px;
  min-height: 320px;
  background: var(--gradient-bg);
}

.browser-tab-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.dimension-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  border: 1px solid rgba(38, 198, 218, 0.15);
  transition: all 0.3s ease;
  cursor: pointer;
}

.dimension-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--secondary);
}

.dimension-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 12px;
  background: var(--gradient-main);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.dimension-card h4 {
  font-size: 0.95rem;
  color: var(--text-dark);
  margin-bottom: 4px;
}

.dimension-card p {
  font-size: 0.8rem;
  color: #006064;
}

/* ========== Section Common ========== */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header .eyebrow {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(38, 198, 218, 0.15);
  color: var(--primary);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.section-header h2 {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 16px;
}

.section-header p {
  font-size: 1.05rem;
  color: #006064;
  max-width: 640px;
  margin: 0 auto;
}

/* ========== Feature Cards Grid ========== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid rgba(38, 198, 218, 0.12);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-main);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(38, 198, 218, 0.4);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: var(--gradient-main);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.feature-card p {
  color: #006064;
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ========== Dimension Banner ========== */
.dimension-banner {
  background: var(--gradient-dark);
  border-radius: var(--radius-lg);
  padding: 60px 48px;
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.dimension-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(38, 198, 218, 0.4), transparent 70%);
  border-radius: 50%;
}

.dimension-banner::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(38, 198, 218, 0.3), transparent 70%);
  border-radius: 50%;
}

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

.banner-text h2 {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 2rem;
  margin-bottom: 16px;
}

.banner-text p {
  font-size: 1.05rem;
  opacity: 0.9;
  margin-bottom: 28px;
  line-height: 1.8;
}

.banner-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.banner-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
}

.banner-list li::before {
  content: '✦';
  color: var(--secondary);
  font-size: 1.2rem;
}

.banner-actions {
  display: flex;
  gap: 16px;
  margin-top: 28px;
}

/* ========== CTA Section ========== */
.cta-section {
  padding: 100px 0;
  background: var(--gradient-dark);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2326c6da' fill-opacity='0.08'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4m-9-15V9h-2v10H9v2h10v10h2V21h10v-2h-10z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-inner {
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta-inner h2 {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 2.5rem;
  color: var(--white);
  margin-bottom: 20px;
}

.cta-inner p {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 36px;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

/* ========== Footer ========== */
.site-footer {
  background: #004d40;
  color: rgba(255, 255, 255, 0.8);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  color: var(--white);
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.6);
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  transition: all 0.3s ease;
}

.social-link:hover {
  background: var(--secondary);
  color: var(--text-dark);
  transform: translateY(-3px);
}

.footer-col h4 {
  color: var(--white);
  font-size: 1.05rem;
  margin-bottom: 20px;
  font-weight: 600;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col ul a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.footer-col ul a:hover {
  color: var(--secondary);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

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

/* ========== Page Banner ========== */
.page-banner {
  padding: 160px 0 80px;
  background: var(--gradient-dark);
  color: var(--white);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%2326c6da' fill-opacity='0.08'%3E%3Cpath d='M20.75 0l2.12 1.98-5.84 5.67 8.12.15.18 8.09L37 10.46l1.98 2.12L20 24 1.02 12.58 3 10.46l1.79 5.33.18-8.09 8.12-.15L7.25 1.98 9.37 0 20 10.75z'/%3E%3C/g%3E%3C/svg%3E");
}

.page-banner .container {
  position: relative;
  z-index: 1;
}

.page-banner h1 {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 2.8rem;
  margin-bottom: 16px;
}

.page-banner p {
  font-size: 1.15rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  margin-top: 24px;
  font-size: 0.9rem;
  opacity: 0.7;
}

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

.breadcrumb span {
  margin: 0 8px;
}

/* ========== Tool Cards (Tools Page) ========== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.tool-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  border: 1px solid rgba(38, 198, 218, 0.12);
  transition: all 0.3s ease;
  cursor: pointer;
}

.tool-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--secondary);
}

.tool-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 14px;
  background: var(--gradient-main);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
}

.tool-card h4 {
  font-size: 1rem;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.tool-card p {
  font-size: 0.82rem;
  color: #006064;
}

.tool-tag {
  display: inline-block;
  margin-top: 10px;
  padding: 2px 10px;
  background: rgba(38, 198, 218, 0.15);
  color: var(--primary);
  font-size: 0.72rem;
  border-radius: 999px;
  font-weight: 600;
}

/* ========== Anime/Dimension Cards ========== */
.anime-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.anime-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(38, 198, 218, 0.12);
  transition: all 0.3s ease;
}

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

.anime-cover {
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.anime-cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, 0.4));
}

.anime-info {
  padding: 16px;
}

.anime-info h4 {
  font-size: 0.95rem;
  color: var(--text-dark);
  margin-bottom: 6px;
  font-weight: 600;
}

.anime-meta {
  font-size: 0.8rem;
  color: #006064;
  display: flex;
  gap: 10px;
}

.anime-category {
  display: inline-block;
  padding: 2px 8px;
  background: rgba(38, 198, 218, 0.15);
  color: var(--primary);
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
}

/* ========== Filter Tabs ========== */
.filter-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.filter-tab {
  padding: 10px 22px;
  background: var(--white);
  border: 1px solid rgba(38, 198, 218, 0.2);
  border-radius: 999px;
  font-size: 0.9rem;
  color: var(--text-dark);
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
}

.filter-tab:hover,
.filter-tab.active {
  background: var(--gradient-main);
  color: var(--white);
  border-color: var(--secondary);
}

/* ========== Download Page ========== */
.download-hero {
  background: var(--gradient-dark);
  padding: 100px 0;
  color: var(--white);
  text-align: center;
}

.download-hero h1 {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 3rem;
  margin-bottom: 16px;
}

.download-hero p {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 36px;
}

.download-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

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

.stat-number {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 2.5rem;
  color: var(--secondary);
  display: block;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.8;
}

.download-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.download-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  border: 2px solid rgba(38, 198, 218, 0.2);
  transition: all 0.3s ease;
}

.download-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.download-card.featured {
  border-color: var(--primary);
  background: linear-gradient(180deg, #ffffff, #e0f7fa);
}

.download-platform {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: var(--gradient-main);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.download-card h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.download-card .version {
  color: #006064;
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.download-card .size {
  font-size: 0.85rem;
  color: #006064;
  margin-bottom: 24px;
}

.system-req {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 48px;
  border: 1px solid rgba(38, 198, 218, 0.15);
}

.system-req h2 {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 1.8rem;
  margin-bottom: 28px;
  text-align: center;
}

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

.req-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--bg-light);
  border-radius: var(--radius-md);
}

.req-icon {
  width: 48px;
  height: 48px;
  background: var(--gradient-main);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.req-item h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.req-item p {
  font-size: 0.9rem;
  color: #006064;
}

/* ========== Contact Page ========== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 40px;
}

.contact-info {
  background: var(--gradient-dark);
  border-radius: var(--radius-lg);
  padding: 48px 36px;
  color: var(--white);
}

.contact-info h3 {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.contact-info p {
  opacity: 0.85;
  margin-bottom: 32px;
  line-height: 1.8;
}

.contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.contact-list .contact-icon {
  width: 42px;
  height: 42px;
  background: rgba(38, 198, 218, 0.2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
}

.contact-list h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.contact-list p {
  font-size: 0.9rem;
  opacity: 0.75;
  margin: 0;
}

.contact-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 48px 36px;
  border: 1px solid rgba(38, 198, 218, 0.15);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid rgba(38, 198, 218, 0.3);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text-dark);
  background: var(--bg-light);
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--white);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* ========== About Page ========== */
.about-hero {
  background: var(--gradient-dark);
  padding: 120px 0 80px;
  color: var(--white);
  text-align: center;
}

.about-hero h1 {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 3rem;
  margin-bottom: 20px;
}

.about-hero p {
  font-size: 1.2rem;
  opacity: 0.9;
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.8;
}

.about-section {
  padding: 80px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  background: var(--gradient-main);
  border-radius: var(--radius-lg);
  height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.about-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.3), transparent 50%);
}

.about-text h2 {
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 2.2rem;
  margin-bottom: 20px;
}

.about-text p {
  color: #006064;
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 1.05rem;
}

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

.team-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 24px;
  text-align: center;
  border: 1px solid rgba(38, 198, 218, 0.12);
  transition: all 0.3s ease;
}

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

.team-avatar {
  width: 100px;
  height: 100px;
  margin: 0 auto 16px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  color: var(--white);
}

.team-card h4 {
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.team-role {
  color: var(--primary);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.team-card p {
  font-size: 0.88rem;
  color: #006064;
}

/* ========== Timeline ========== */
.timeline {
  position: relative;
  padding: 40px 0;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--gradient-main);
  border-radius: 2px;
}

.timeline-item {
  display: flex;
  margin-bottom: 48px;
  position: relative;
}

.timeline-item:nth-child(odd) {
  flex-direction: row-reverse;
}

.timeline-content {
  width: 45%;
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(38, 198, 218, 0.12);
}

.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 20px;
  background: var(--gradient-main);
  border-radius: 50%;
  border: 4px solid var(--white);
  box-shadow: var(--shadow-sm);
}

.timeline-year {
  color: var(--primary);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.timeline-content h4 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.timeline-content p {
  color: #006064;
  font-size: 0.95rem;
}

/* ========== Installation Steps ========== */
.install-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}

.install-step {
  text-align: center;
  padding: 32px 24px;
}

.step-number {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--gradient-main);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'ZCOOL XiaoWei', serif;
  font-size: 1.6rem;
  font-weight: 700;
}

.install-step h4 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.install-step p {
  color: #006064;
  font-size: 0.95rem;
}

/* ========== Responsive Design ========== */
@media (max-width: 1024px) {
  .hero-content h1 { font-size: 2.4rem; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .tools-grid { grid-template-columns: repeat(3, 1fr); }
  .anime-grid { grid-template-columns: repeat(3, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .download-options { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .banner-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    transition: transform 0.3s ease;
  }
  .main-nav.open { transform: translateY(0); }
  .nav-link { width: 100%; text-align: center; padding: 12px; }

  .hero { padding: 120px 0 60px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-content h1 { font-size: 2rem; }
  .hero-content p { font-size: 1rem; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; }

  .section { padding: 60px 0; }
  .section-header h2 { font-size: 1.8rem; }

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

  .browser-tab-content { grid-template-columns: 1fr; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding-bottom: 32px;
  }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

  .dimension-banner { padding: 40px 28px; }
  .banner-grid { grid-template-columns: 1fr; }

  .page-banner { padding: 120px 0 60px; }
  .page-banner h1 { font-size: 2rem; }

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

  .download-hero h1 { font-size: 2rem; }
  .download-stats { gap: 32px; }
  .stat-number { font-size: 2rem; }

  .req-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .install-steps { grid-template-columns: 1fr; }

  .timeline::before { left: 20px; }
  .timeline-item,
  .timeline-item:nth-child(odd) { flex-direction: row; }
  .timeline-content { width: calc(100% - 40px); margin-left: 40px; }
  .timeline-dot { left: 20px; }

  .cta-section { padding: 60px 0; }
  .cta-inner h2 { font-size: 1.8rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-content h1 { font-size: 1.7rem; }
  .section-header h2 { font-size: 1.5rem; }
  .tools-grid { grid-template-columns: 1fr; }
  .anime-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .browser-content { padding: 20px; }
  .browser-tab-content { grid-template-columns: 1fr; }
  .dimension-banner { padding: 32px 20px; }
  .system-req { padding: 28px 20px; }
  .contact-form,
  .contact-info { padding: 28px 20px; }
  .about-hero h1 { font-size: 2rem; }
  .anime-cover { aspect-ratio: 16/10; }
}