/* ============================================
   皇冠体育 - 主样式表
   独特配色：深蓝+金色+暗红 奢华风格
   移动优先响应式设计
   ============================================ */

/* CSS Variables */
:root {
  --primary-dark: #0a1628;
  --primary-blue: #0d2137;
  --accent-gold: #d4a843;
  --accent-gold-light: #f0d078;
  --accent-red: #c0392b;
  --accent-red-dark: #8b1a1a;
  --text-white: #f5f5f5;
  --text-light: #c8c8c8;
  --text-muted: #8a8a8a;
  --bg-card: #0f2a40;
  --bg-card-alt: #132d44;
  --border-gold: rgba(212, 168, 67, 0.3);
  --shadow-gold: 0 4px 20px rgba(212, 168, 67, 0.15);
  --gradient-hero: linear-gradient(135deg, #0a1628 0%, #1a3a5c 50%, #0d2137 100%);
  --gradient-gold: linear-gradient(135deg, #d4a843 0%, #f0d078 50%, #d4a843 100%);
  --gradient-card: linear-gradient(180deg, #0f2a40 0%, #0a1e30 100%);
  --font-main: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-heading: 'Noto Serif SC', 'STSong', serif;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-main);
  background: var(--primary-dark);
  color: var(--text-white);
  line-height: 1.8;
  overflow-x: hidden;
  min-height: 100vh;
}

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

a {
  color: var(--accent-gold);
  text-decoration: none;
  transition: var(--transition);
}

a:hover { color: var(--accent-gold-light); }

ul, ol { list-style: none; }

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.3;
  color: var(--text-white);
  margin-bottom: 0.6em;
}

h1 { font-size: 1.8rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }

p { margin-bottom: 1em; color: var(--text-light); }

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ============ HEADER / NAV ============ */
.site-header {
  background: rgba(10, 22, 40, 0.95);
  border-bottom: 2px solid var(--border-gold);
  padding: 12px 0;
  position: relative; /* NOT sticky */
  z-index: 100;
}

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

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-logo img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid var(--accent-gold);
}

.site-logo span {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--accent-gold);
  font-weight: 700;
}

.nav-toggle {
  display: block;
  background: none;
  border: 2px solid var(--accent-gold);
  color: var(--accent-gold);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1.4rem;
  transition: var(--transition);
}

.nav-toggle:hover {
  background: var(--accent-gold);
  color: var(--primary-dark);
}

.main-nav {
  width: 100%;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.main-nav.active {
  max-height: 600px;
}

.main-nav ul {
  display: flex;
  flex-direction: column;
  padding: 12px 0;
  gap: 4px;
}

.main-nav li a {
  display: block;
  padding: 10px 16px;
  color: var(--text-light);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  transition: var(--transition);
}

.main-nav li a:hover,
.main-nav li a.active {
  background: rgba(212, 168, 67, 0.15);
  color: var(--accent-gold);
}

/* ============ HERO SECTION ============ */
.hero-section {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--gradient-hero);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 40px 16px;
  text-align: center;
  width: 100%;
}

.hero-content h1 {
  font-size: 2rem;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  text-shadow: none;
}

.hero-content p {
  font-size: 1rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 24px;
}

.cta-btn {
  display: inline-block;
  padding: 14px 36px;
  background: var(--gradient-gold);
  color: var(--primary-dark);
  font-weight: 700;
  font-size: 1.05rem;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(212, 168, 67, 0.4);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(212, 168, 67, 0.6);
  color: var(--primary-dark);
}

.cta-btn-red {
  background: linear-gradient(135deg, var(--accent-red) 0%, #e74c3c 100%);
  color: #fff;
}

.cta-btn-red:hover { color: #fff; }

/* ============ SECTION STYLES ============ */
.section {
  padding: 40px 0;
}

.section-alt {
  background: var(--primary-blue);
}

.section-title {
  text-align: center;
  margin-bottom: 32px;
  position: relative;
}

.section-title h2 {
  font-size: 1.6rem;
  color: var(--accent-gold);
  display: inline-block;
  position: relative;
}

.section-title h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--gradient-gold);
  margin: 10px auto 0;
  border-radius: 2px;
}

.section-title p {
  color: var(--text-muted);
  margin-top: 8px;
  font-size: 0.9rem;
}

/* ============ CARD GRID ============ */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.card {
  background: var(--gradient-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

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

.card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}

.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.card:hover .card-img img {
  transform: scale(1.05);
}

.card-body {
  padding: 16px;
}

.card-body h3 {
  font-size: 1.1rem;
  color: var(--accent-gold);
  margin-bottom: 8px;
}

.card-body p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ============ ODDS TABLE ============ */
.odds-table-wrap {
  overflow-x: auto;
  margin: 16px 0;
  -webkit-overflow-scrolling: touch;
}

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

.odds-table thead th {
  background: rgba(212, 168, 67, 0.2);
  color: var(--accent-gold);
  padding: 12px 10px;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 600;
  border-bottom: 2px solid var(--border-gold);
  white-space: nowrap;
}

.odds-table tbody td {
  padding: 10px;
  text-align: center;
  font-size: 0.85rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  color: var(--text-light);
}

.odds-table tbody tr:hover {
  background: rgba(212, 168, 67, 0.08);
}

.odds-value {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.85rem;
}

.odds-home { background: rgba(46, 204, 113, 0.2); color: #2ecc71; }
.odds-draw { background: rgba(241, 196, 15, 0.2); color: #f1c40f; }
.odds-away { background: rgba(231, 76, 60, 0.2); color: #e74c3c; }

.match-result {
  font-weight: 700;
  font-size: 1rem;
  color: var(--accent-gold-light);
}

/* ============ PREDICTION MODULE ============ */
.prediction-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 20px;
}

.prediction-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.prediction-badge {
  background: var(--accent-red);
  color: #fff;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.prediction-teams {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin: 16px 0;
  flex-wrap: wrap;
}

.team-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-white);
}

.vs-badge {
  background: var(--accent-gold);
  color: var(--primary-dark);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
}

/* ============ LICENSE MODULE ============ */
.license-section {
  background: linear-gradient(135deg, #0a1628 0%, #1a2a4a 100%);
  border: 2px solid var(--accent-gold);
  border-radius: var(--radius-lg);
  padding: 30px 20px;
  text-align: center;
}

.license-badge {
  display: inline-block;
  margin: 16px auto;
  max-width: 200px;
}

.license-badge img {
  border-radius: var(--radius-md);
  border: 2px solid var(--accent-gold);
}

.license-number {
  font-family: monospace;
  font-size: 1.1rem;
  color: var(--accent-gold-light);
  background: rgba(212, 168, 67, 0.1);
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin: 12px 0;
}

/* ============ ARTICLES ============ */
.article-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.article-item {
  display: flex;
  gap: 12px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
}

.article-item:hover {
  border-color: var(--border-gold);
}

.article-thumb {
  flex-shrink: 0;
  width: 100px;
  min-height: 80px;
}

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

.article-info {
  padding: 10px 12px 10px 0;
  flex: 1;
}

.article-info h4 {
  font-size: 0.9rem;
  color: var(--text-white);
  margin-bottom: 4px;
  line-height: 1.4;
}

.article-info p {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-date {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ============ VIDEO MODULE ============ */
.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-gold);
  background: #000;
}

.video-wrapper iframe,
.video-wrapper video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.video-play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.5);
  cursor: pointer;
  z-index: 2;
  transition: var(--transition);
}

.video-play-overlay:hover {
  background: rgba(0,0,0,0.3);
}

.play-btn-icon {
  width: 70px;
  height: 70px;
  background: var(--accent-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(212, 168, 67, 0.5);
}

.play-btn-icon::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 14px 0 14px 24px;
  border-color: transparent transparent transparent var(--primary-dark);
  margin-left: 4px;
}

/* ============ REGISTER MODULE ============ */
.register-box {
  background: linear-gradient(135deg, #1a2a4a 0%, #0d2137 100%);
  border: 2px solid var(--accent-gold);
  border-radius: var(--radius-lg);
  padding: 30px 20px;
  text-align: center;
}

.register-box .form-group {
  margin-bottom: 16px;
  text-align: left;
}

.register-box label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 6px;
}

.register-box input,
.register-box select {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-sm);
  color: var(--text-white);
  font-size: 0.95rem;
  transition: var(--transition);
}

.register-box input:focus,
.register-box select:focus {
  outline: none;
  border-color: var(--accent-gold);
  box-shadow: 0 0 10px rgba(212, 168, 67, 0.3);
}

/* ============ REVIEWS ============ */
.review-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 20px;
}

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

.review-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--primary-dark);
  flex-shrink: 0;
}

.review-meta {
  flex: 1;
}

.review-name {
  font-weight: 600;
  color: var(--text-white);
  font-size: 0.95rem;
}

.review-title-tag {
  font-size: 0.75rem;
  color: var(--accent-gold);
}

.review-level {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.review-stars {
  color: #f1c40f;
  font-size: 0.9rem;
  margin: 6px 0;
  letter-spacing: 2px;
}

.review-text {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.7;
}

.review-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 10px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ============ FAQ ============ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
}

.faq-question {
  padding: 16px 20px;
  background: var(--bg-card);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--text-white);
  font-size: 0.95rem;
  transition: var(--transition);
}

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

.faq-arrow {
  transition: transform 0.3s ease;
  color: var(--accent-gold);
  font-size: 1.2rem;
}

.faq-item.open .faq-arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
  background: rgba(15, 42, 64, 0.5);
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 16px 20px;
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.8;
}

/* ============ PAYMENT ============ */
.payment-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.payment-item {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  transition: var(--transition);
}

.payment-item:hover {
  border-color: var(--border-gold);
}

.payment-item img {
  max-height: 40px;
  margin: 0 auto 8px;
}

.payment-item h4 {
  font-size: 0.85rem;
  color: var(--accent-gold);
  margin-bottom: 4px;
}

.payment-item p {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============ SUPPORT ============ */
.support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.support-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  transition: var(--transition);
}

.support-card:hover {
  border-color: var(--accent-gold);
  transform: translateY(-2px);
}

.support-icon {
  font-size: 2rem;
  margin-bottom: 10px;
}

/* ============ BREADCRUMB ============ */
.breadcrumb {
  padding: 12px 0;
  font-size: 0.82rem;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
}

.breadcrumb li::after {
  content: '>';
  margin-left: 6px;
  color: var(--text-muted);
}

.breadcrumb li:last-child::after {
  display: none;
}

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

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

.breadcrumb .current {
  color: var(--accent-gold);
}

/* ============ FOOTER ============ */
.site-footer {
  background: #060e1a;
  border-top: 2px solid var(--border-gold);
  padding: 40px 0 20px;
}

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

.footer-col h4 {
  color: var(--accent-gold);
  font-size: 1rem;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}

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

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--accent-gold);
  padding-left: 4px;
}

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 12px;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(212, 168, 67, 0.15);
  color: var(--accent-gold);
  font-size: 1.1rem;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--accent-gold);
  color: var(--primary-dark);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 20px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.footer-payment-icons {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin: 12px 0;
}

.footer-payment-icons img {
  height: 28px;
  opacity: 0.7;
  transition: var(--transition);
}

.footer-payment-icons img:hover {
  opacity: 1;
}

.age-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--accent-red);
  color: var(--accent-red);
  font-weight: 800;
  font-size: 0.9rem;
  margin: 10px auto;
}

/* ============ ABOUT SECTION ============ */
.about-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.about-text {
  line-height: 1.9;
}

.about-text h3 {
  color: var(--accent-gold);
  margin: 20px 0 10px;
}

.about-img {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-gold);
}

/* ============ AUTHOR INFO ============ */
.author-box {
  display: flex;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  padding: 20px;
  margin: 20px 0;
  align-items: flex-start;
  flex-wrap: wrap;
}

.author-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--accent-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--primary-dark);
  font-weight: 700;
  flex-shrink: 0;
}

.author-info {
  flex: 1;
  min-width: 200px;
}

.author-name {
  font-weight: 700;
  color: var(--accent-gold);
  font-size: 1.05rem;
}

.author-title {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.author-bio {
  font-size: 0.88rem;
  color: var(--text-light);
  margin-top: 6px;
  line-height: 1.7;
}

/* ============ DISCLAIMER ============ */
.disclaimer-box {
  background: rgba(192, 57, 43, 0.1);
  border: 1px solid rgba(192, 57, 43, 0.3);
  border-radius: var(--radius-md);
  padding: 20px;
  margin: 20px 0;
}

.disclaimer-box h4 {
  color: var(--accent-red);
  margin-bottom: 10px;
}

.disclaimer-box p, .disclaimer-box li {
  font-size: 0.85rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* ============ INNER PAGE ============ */
.inner-hero {
  background: var(--gradient-hero);
  padding: 40px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.inner-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(212, 168, 67, 0.1) 0%, transparent 70%);
}

.inner-hero h1 {
  position: relative;
  z-index: 2;
  color: var(--accent-gold);
  font-size: 1.8rem;
}

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

.content-section {
  padding: 30px 0;
}

.content-section h2 {
  color: var(--accent-gold);
  border-left: 4px solid var(--accent-gold);
  padding-left: 12px;
  margin: 24px 0 16px;
}

.content-section h3 {
  color: var(--accent-gold-light);
  margin: 20px 0 10px;
}

.content-img {
  margin: 16px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-gold);
}

.content-img img {
  width: 100%;
}

/* ============ APP DOWNLOAD ============ */
.app-hero {
  background: linear-gradient(135deg, #0a1628 0%, #1a0a3a 50%, #0d2137 100%);
  padding: 50px 0;
  text-align: center;
}

.app-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 24px 0;
}

.app-feature-item {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
}

.app-feature-item .feature-icon {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.download-btns {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  margin: 24px 0;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  min-width: 220px;
  justify-content: center;
}

.download-btn-ios {
  background: #333;
  color: #fff;
  border: 1px solid #555;
}

.download-btn-android {
  background: #1a6b3c;
  color: #fff;
  border: 1px solid #2a8b4c;
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

/* ============ PROMOTION / BONUS ============ */
.promo-banner {
  background: linear-gradient(135deg, #2c1810 0%, #4a2010 50%, #2c1810 100%);
  border: 2px solid var(--accent-gold);
  border-radius: var(--radius-lg);
  padding: 30px 20px;
  text-align: center;
  margin: 20px 0;
}

.promo-banner h3 {
  color: var(--accent-gold-light);
  font-size: 1.4rem;
}

.promo-amount {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent-gold);
  margin: 10px 0;
}

/* ============ RESPONSIVE ============ */
@media (min-width: 480px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: repeat(2, 1fr); }
  .payment-grid { grid-template-columns: repeat(3, 1fr); }
  .support-grid { grid-template-columns: repeat(2, 1fr); }
  .article-list { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.8rem; }
  .container { padding: 0 24px; }
  .hero-content h1 { font-size: 2.6rem; }
  .hero-section { min-height: 500px; }
  .section { padding: 60px 0; }
  .card-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .about-content { grid-template-columns: 1fr 1fr; }
  .nav-toggle { display: none; }
  .main-nav { max-height: none; width: auto; }
  .main-nav ul { flex-direction: row; gap: 0; }
  .main-nav li a { padding: 8px 14px; font-size: 0.88rem; }
  .download-btns { flex-direction: row; justify-content: center; }
  .app-features { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1024px) {
  .card-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: repeat(4, 1fr); }
  .review-grid { grid-template-columns: repeat(3, 1fr); }
  .support-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ============ ANIMATIONS ============ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

.gold-shimmer {
  background: linear-gradient(90deg, var(--accent-gold) 0%, var(--accent-gold-light) 50%, var(--accent-gold) 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 3s linear infinite;
}

/* ============ UTILITY ============ */
.text-center { text-align: center; }
.text-gold { color: var(--accent-gold); }
.text-red { color: var(--accent-red); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.hidden { display: none; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}