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

:root {
  --color-primary: #1a6b4a;
  --color-primary-dark: #0d4a32;
  --color-primary-deeper: #0d2b1e;
  --color-gold: #c8a45c;
  --color-gold-light: #d4b76a;
  --color-bg: #faf8f5;
  --color-bg-warm: #f5f0ea;
  --color-bg-green-light: #e8f5e9;
  --color-text: #1a1a1a;
  --color-text-secondary: #555;
  --color-text-muted: #888;
  --color-white: #ffffff;
  --color-border: #e0ddd8;

  --font-serif: 'Noto Serif SC', 'Songti SC', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-display: 'Playfair Display', var(--font-serif);
  --font-number: 'Oswald', 'Arial Narrow', sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);

  --container-max: 1100px;
  --section-padding: 80px 0;
}

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Section Common ===== */
.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 16px;
  font-weight: 600;
}
.label-line {
  display: inline-block;
  width: 32px;
  height: 2px;
  background: var(--color-primary);
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(24px, 5vw, 36px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: 20px;
}
.section-desc {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 640px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 36px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  min-height: 48px;
  -webkit-tap-highlight-color: transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(26, 107, 74, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(26, 107, 74, 0.4);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 1.5px solid rgba(255,255,255,0.5);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-white);
}
.btn-large {
  padding: 18px 56px;
  font-size: 17px;
  min-height: 56px;
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(160deg, var(--color-primary-deeper) 0%, #0f3d28 40%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: 60px 24px 80px;
  overflow: hidden;
}
.hero-bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(ellipse 600px 400px at 20% 80%, rgba(26,107,74,0.3) 0%, transparent 70%),
    radial-gradient(ellipse 500px 500px at 80% 20%, rgba(200,164,92,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 100px;
  font-size: 13px;
  letter-spacing: 1px;
  margin-bottom: 32px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-gold);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 6vw, 46px);
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 20px;
}
.hero-title em {
  font-style: normal;
  color: var(--color-gold-light);
}
.hero-subtitle {
  font-size: clamp(15px, 3vw, 18px);
  color: rgba(255,255,255,0.85);
  margin-bottom: 12px;
  line-height: 1.6;
}
.hero-en {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 3px;
  color: rgba(255,255,255,0.35);
  margin-bottom: 40px;
  text-transform: uppercase;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 1px;
  animation: bounce-hint 2s ease-in-out infinite;
}
@keyframes bounce-hint {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== About Section ===== */
.about {
  padding: var(--section-padding);
  background: var(--color-bg);
}
.about-content {
  margin-bottom: 48px;
}
.about-text {
  font-size: 15px;
  line-height: 2;
  color: var(--color-text-secondary);
  max-width: 720px;
}
.about-text strong {
  color: var(--color-primary);
  font-weight: 600;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.stat-item {
  text-align: center;
  padding: 28px 16px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.stat-number {
  display: block;
  font-family: var(--font-number);
  font-size: clamp(32px, 7vw, 48px);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.1;
  margin-bottom: 8px;
}
.stat-number sub {
  font-size: 0.4em;
  color: var(--color-gold);
  vertical-align: baseline;
  margin-left: 2px;
  font-weight: 500;
}
.stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  letter-spacing: 0.5px;
}

/* ===== Benefits Section ===== */
.benefits {
  padding: var(--section-padding);
  background: var(--color-bg-warm);
}
.benefits .section-title {
  margin-bottom: 12px;
}
.benefits .section-desc {
  margin-bottom: 48px;
}
.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.benefit-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  border: 1px solid var(--color-border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}
.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.benefit-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-primary), var(--color-gold));
  opacity: 0;
  transition: opacity 0.3s ease;
}
.benefit-card:hover::before {
  opacity: 1;
}
.benefit-number {
  font-family: var(--font-number);
  font-size: 36px;
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.15;
  line-height: 1;
  margin-bottom: 12px;
}
.benefit-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 0;
}
.benefit-header .benefit-number {
  margin-bottom: 0;
}
.benefit-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-bg-green-light);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 600;
  border-radius: 100px;
  letter-spacing: 0.5px;
}
.benefit-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text);
  line-height: 1.5;
}
.benefit-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}
.benefit-featured {
  background: linear-gradient(135deg, var(--color-primary-deeper), var(--color-primary-dark));
  color: var(--color-white);
  border: none;
}
.benefit-featured .benefit-number {
  color: var(--color-gold);
  opacity: 0.4;
}
.benefit-featured .benefit-title {
  color: var(--color-white);
}
.benefit-featured .benefit-desc {
  color: rgba(255,255,255,0.8);
}
.benefit-featured::before {
  background: linear-gradient(180deg, var(--color-gold), var(--color-gold-light));
  opacity: 1;
}
.benefit-tabs {
  display: flex;
  gap: 8px;
  margin-top: 20px;
  flex-wrap: wrap;
}
.tab-item {
  padding: 6px 16px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 100px;
  font-size: 12px;
  color: rgba(255,255,255,0.7);
  transition: all 0.3s ease;
}
.tab-item.active {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-primary-deeper);
  font-weight: 600;
}
.date-highlight {
  display: block;
  font-family: var(--font-number);
  font-size: 32px;
  font-weight: 700;
  color: var(--color-gold);
  margin-bottom: 4px;
}
.benefit-extra {
  margin-top: 12px;
  font-size: 13px;
  color: var(--color-gold-light);
  font-weight: 500;
  letter-spacing: 0.5px;
}

/* ===== Membership Section ===== */
.membership {
  padding: var(--section-padding);
  background: var(--color-bg);
}
.membership .section-title {
  text-align: center;
}
.membership .section-label {
  justify-content: center;
}
.pricing-card {
  max-width: 560px;
  margin: 0 auto;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 48px 36px;
  border: 2px solid var(--color-primary);
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.pricing-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold), var(--color-primary));
}
.pricing-amount {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
  margin-bottom: 12px;
}
.currency {
  font-family: var(--font-number);
  font-size: 28px;
  font-weight: 600;
  color: var(--color-primary);
}
.price {
  font-family: var(--font-number);
  font-size: clamp(48px, 10vw, 64px);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}
.period {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-left: 4px;
}
.pricing-note {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 32px;
}
.pricing-features {
  list-style: none;
  text-align: left;
}
.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  border-bottom: 1px solid var(--color-border);
}
.pricing-features li:last-child {
  border-bottom: none;
}
.pricing-features li svg {
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 2px;
}

/* ===== Join Section ===== */
.join {
  padding: var(--section-padding);
  background: linear-gradient(160deg, var(--color-primary-deeper) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  text-align: center;
}
.join .section-label {
  justify-content: center;
  color: var(--color-gold-light);
}
.join .section-label .label-line {
  background: var(--color-gold-light);
}
.join .section-title {
  color: var(--color-white);
}
.join .section-desc {
  color: rgba(255,255,255,0.75);
  margin: 0 auto 40px;
}
.join-content {
  max-width: 560px;
  margin: 0 auto;
}
.join-link {
  margin-top: 20px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}
.join-link a {
  color: var(--color-gold-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.notice-box {
  margin-top: 40px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px 24px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  text-align: left;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.notice-icon {
  flex-shrink: 0;
  color: var(--color-gold);
  margin-top: 2px;
}
.notice-content {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.85);
}
.notice-content strong {
  color: var(--color-gold-light);
}

/* ===== Footer ===== */
.footer {
  padding: 32px 0;
  background: #091a12;
  text-align: center;
}
.footer-text {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.5px;
}

/* ===== Mobile CTA Bar ===== */
.mobile-cta-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 12px 16px;
  padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
  background: rgba(13, 43, 30, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(255,255,255,0.1);
  transform: translateY(100%);
  transition: transform 0.4s ease;
}
.mobile-cta-bar.show {
  transform: translateY(0);
}
.mobile-cta-btn {
  display: block;
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-light));
  color: var(--color-primary-deeper);
  text-align: center;
  font-size: 16px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  letter-spacing: 1px;
  -webkit-tap-highlight-color: transparent;
}
.mobile-cta-btn:active {
  opacity: 0.9;
  transform: scale(0.98);
}

/* ===== Tablet (≥600px) ===== */
@media (min-width: 600px) {
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .benefit-featured {
    grid-column: 1 / -1;
  }
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ===== Desktop (≥900px) ===== */
@media (min-width: 900px) {
  :root {
    --section-padding: 120px 0;
  }
  .container {
    padding: 0 40px;
  }
  .hero {
    padding: 80px 40px 100px;
  }
  .hero-title {
    font-size: 46px;
  }
  .benefits-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .benefit-featured {
    grid-column: 1 / -1;
  }
  .benefit-card {
    padding: 36px 32px;
  }
  .pricing-card {
    padding: 56px 48px;
  }
  .notice-box {
    padding: 24px 32px;
  }
}

/* ===== Mobile (≤599px) ===== */
@media (max-width: 599px) {
  :root {
    --section-padding: 60px 0;
  }
  .container {
    padding: 0 20px;
  }
  .hero {
    min-height: 100svh;
    padding: 48px 20px 72px;
  }
  .hero-badge {
    font-size: 12px;
    padding: 6px 16px;
    margin-bottom: 24px;
  }
  .hero-title {
    font-size: 28px;
    margin-bottom: 16px;
  }
  .hero-subtitle {
    font-size: 15px;
    margin-bottom: 8px;
  }
  .hero-en {
    font-size: 9px;
    letter-spacing: 2px;
    margin-bottom: 32px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-scroll-hint {
    display: none;
  }
  .section-title {
    font-size: 24px;
  }
  .section-desc {
    font-size: 14px;
  }
  .about-text {
    font-size: 14px;
    line-height: 1.9;
  }
  .stats-grid {
    gap: 12px;
  }
  .stat-item {
    padding: 20px 12px;
  }
  .stat-number {
    font-size: 32px;
  }
  .stat-label {
    font-size: 12px;
  }
  .benefit-card {
    padding: 24px 20px;
  }
  .benefit-title {
    font-size: 17px;
  }
  .benefit-desc {
    font-size: 13px;
  }
  .benefit-tabs {
    gap: 6px;
  }
  .tab-item {
    font-size: 11px;
    padding: 5px 12px;
  }
  .date-highlight {
    font-size: 28px;
  }
  .pricing-card {
    padding: 36px 24px;
    border-radius: var(--radius-md);
  }
  .price {
    font-size: 48px;
  }
  .pricing-features li {
    font-size: 13px;
    padding: 10px 0;
  }
  .btn-large {
    padding: 16px 40px;
    font-size: 16px;
    width: 100%;
  }
  .notice-box {
    flex-direction: column;
    gap: 10px;
    padding: 16px 20px;
    margin-top: 32px;
  }
  .notice-content {
    font-size: 13px;
  }
  .mobile-cta-bar {
    display: block;
  }
  .footer {
    padding-bottom: calc(32px + 72px);
  }
}

/* ===== Touch optimization ===== */
@media (hover: none) and (pointer: coarse) {
  .btn {
    min-height: 48px;
    padding: 14px 28px;
  }
  .benefit-card {
    cursor: default;
  }
  .benefit-card:hover {
    transform: none;
    box-shadow: none;
  }
  .stat-item:hover {
    transform: none;
    box-shadow: none;
  }
}