/* =============================================================
   ylcvip.com — VIP贵宾会品牌站
   配色: 深酒红 #6b1d2c / 翡翠绿 #1a6b4e / 暗金 #c9a84c / 墨黑 #1a1a2e
   字体: Cormorant Garamond (英文衬线) + Noto Serif SC (中文衬线)
   气质: 奢华、尊贵、欧洲古典
   ============================================================= */

/* ── Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;500;600;700&family=Noto+Serif+SC:wght@400;600;700&display=swap');

:root {
  --wine: #6b1d2c;
  --wine-dark: #4a1220;
  --wine-light: #8e2d40;
  --emerald: #1a6b4e;
  --emerald-dark: #124a36;
  --emerald-light: #24966d;
  --gold: #c9a84c;
  --gold-light: #e0c878;
  --gold-dark: #a68a30;
  --charcoal: #1a1a2e;
  --charcoal-light: #2a2a42;
  --ivory: #f5f0e8;
  --ivory-dark: #e8dec8;
  --text: #2c2c2c;
  --text-light: #666;
  --white: #fff;
  --font-en: 'Cormorant Garamond', 'Georgia', serif;
  --font-cn: 'Noto Serif SC', 'SimSun', serif;
  --shadow: 0 4px 20px rgba(0,0,0,0.12);
  --radius: 6px;
}

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

body {
  font-family: var(--font-cn);
  color: var(--text);
  background: var(--ivory);
  line-height: 1.8;
  font-size: 16px;
}

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

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

/* ── Typography ── */
h1, h2, h3, h4 {
  font-family: var(--font-cn);
  font-weight: 700;
  line-height: 1.3;
}

.en-title { font-family: var(--font-en); letter-spacing: 2px; }

.text-gold { color: var(--gold); }
.text-wine { color: var(--wine); }
.text-emerald { color: var(--emerald); }

/* ── Buttons ── */
.btn {
  display: inline-block;
  padding: 14px 40px;
  font-family: var(--font-en);
  font-size: 15px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 2px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--charcoal);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(201,168,76,0.4); }

.btn-glass {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--gold);
}
.btn-glass:hover { background: var(--gold); color: var(--charcoal); transform: translateY(-2px); }

.btn-emerald {
  background: linear-gradient(135deg, var(--emerald), var(--emerald-dark));
  color: var(--white);
}
.btn-emerald:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(26,107,78,0.4); }

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

.section-title {
  text-align: center;
  font-size: 32px;
  margin-bottom: 10px;
  position: relative;
}
.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  margin: 14px auto 0;
}

.section-subtitle {
  text-align: center;
  color: var(--text-light);
  font-size: 14px;
  letter-spacing: 2px;
  margin-bottom: 50px;
  font-family: var(--font-en);
}

/* ── Navigation ── */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(26,26,46,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(201,168,76,0.2);
  transition: all 0.3s;
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--charcoal);
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
}
.logo-text {
  font-size: 22px;
  font-weight: 700;
  font-family: var(--font-en);
  color: var(--white);
  letter-spacing: 3px;
}
.logo-accent { color: var(--gold); }

.navbar-links {
  display: flex;
  list-style: none;
  gap: 6px;
}
.navbar-links a {
  color: rgba(255,255,255,0.7);
  padding: 8px 16px;
  font-size: 14px;
  font-family: var(--font-en);
  letter-spacing: 1px;
  transition: all 0.3s;
  position: relative;
}
.navbar-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: width 0.3s;
}
.navbar-links a:hover, .navbar-links a.active {
  color: var(--gold);
}
.navbar-links a:hover::after, .navbar-links a.active::after { width: 60%; }
.navbar-links .btn-nav {
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--charcoal);
  padding: 10px 24px;
  border-radius: 2px;
  font-weight: 700;
}
.navbar-links .btn-nav::after { display: none; }
.navbar-links .btn-nav:hover { opacity: 0.9; color: var(--charcoal); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all 0.3s;
}

.nav-overlay {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  width: 100%;
  height: calc(100vh - 70px);
  background: rgba(26,26,46,0.98);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
}
.nav-overlay a {
  color: var(--white);
  font-size: 18px;
  font-family: var(--font-en);
  letter-spacing: 2px;
  transition: color 0.3s;
}
.nav-overlay a:hover { color: var(--gold); }

.nav-overlay.open { display: flex; }

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--charcoal);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(107,29,44,0.3) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(26,107,78,0.25) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 30%, rgba(201,168,76,0.1) 0%, transparent 40%);
}
.hero-particles { position: absolute; inset: 0; overflow: hidden; }
.hero-particles span {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--gold);
  border-radius: 50%;
  animation: float 8s infinite;
  opacity: 0.4;
}
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.2; }
  50% { transform: translateY(-100px) scale(1.5); opacity: 0.6; }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 0 20px;
}
.hero-badge {
  display: inline-block;
  padding: 6px 20px;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  font-family: var(--font-en);
  margin-bottom: 30px;
}
.hero h1 {
  font-size: 56px;
  color: var(--white);
  font-family: var(--font-en);
  font-weight: 700;
  letter-spacing: 4px;
  margin-bottom: 20px;
}
.hero h1 span { color: var(--gold); }
.hero p {
  color: rgba(255,255,255,0.6);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.9;
}
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 60px;
  justify-content: center;
  margin-top: 60px;
}
.hero-stat { text-align: center; }
.hero-stat .num {
  font-family: var(--font-en);
  font-size: 32px;
  font-weight: 700;
  color: var(--gold);
}
.hero-stat .label {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 2px;
  margin-top: 4px;
  font-family: var(--font-en);
}

/* ── Stats Section ── */
.stats-section {
  background: var(--charcoal-light);
  padding: 60px 0;
  border-top: 1px solid rgba(201,168,76,0.15);
  border-bottom: 1px solid rgba(201,168,76,0.15);
}
.stats-section .section-title { color: var(--white); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  max-width: 900px;
  margin: 0 auto;
}
.stat-item { text-align: center; }
.stat-num {
  font-family: var(--font-en);
  font-size: 36px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}
.stat-label {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  letter-spacing: 2px;
  margin-top: 8px;
  font-family: var(--font-en);
}

/* ── Feature Cards ── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--white);
  padding: 40px 30px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: all 0.4s;
  position: relative;
  overflow: hidden;
  border: 1px solid transparent;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--wine), var(--emerald));
  opacity: 0;
  transition: opacity 0.4s;
}
.feature-card:hover::before { opacity: 1; }
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.15);
  border-color: rgba(201,168,76,0.2);
}
.feature-card .icon {
  font-size: 32px;
  margin-bottom: 18px;
}
.feature-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--charcoal);
}
.feature-card h3 .en { font-family: var(--font-en); color: var(--gold); letter-spacing: 1px; display: block; font-size: 13px; margin-top: 4px; }
.feature-card p { color: var(--text-light); font-size: 14px; line-height: 1.8; }

/* ── Section Dark ── */
.section-dark {
  background: var(--charcoal);
  color: var(--white);
}
.section-dark .section-title { color: var(--white); }
.section-dark .feature-card { background: var(--charcoal-light); }
.section-dark .feature-card p { color: rgba(255,255,255,0.6); }
.section-dark .feature-card h3 { color: var(--white); }

.features-strip {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}
.feature-mini {
  text-align: center;
  padding: 30px 20px;
}
.feature-mini .fm-icon { font-size: 36px; margin-bottom: 12px; }
.feature-mini h4 { font-size: 16px; margin-bottom: 8px; color: var(--gold); }
.feature-mini p { color: rgba(255,255,255,0.5); font-size: 13px; }

/* ── CTA ── */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--wine), var(--charcoal));
  text-align: center;
  color: var(--white);
}
.cta-section h2 {
  font-size: 36px;
  font-family: var(--font-en);
  letter-spacing: 3px;
  margin-bottom: 16px;
}
.cta-section h2 span { color: var(--gold); }
.cta-section p { color: rgba(255,255,255,0.6); margin-bottom: 30px; }

/* ── Interlink ── */
.interlink-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
}
.interlink-card {
  background: var(--white);
  padding: 24px 16px;
  text-align: center;
  border-radius: var(--radius);
  transition: all 0.3s;
  border: 1px solid rgba(201,168,76,0.1);
}
.interlink-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.1);
  border-color: var(--gold);
}
.interlink-card .il-icon { font-size: 28px; margin-bottom: 8px; }
.interlink-card h4 { font-size: 14px; margin-bottom: 4px; color: var(--charcoal); }
.interlink-card p { font-size: 12px; color: var(--text-light); }

/* ── FAQ ── */
.faq-list { max-width: 700px; margin: 0 auto; }
.faq-item {
  background: var(--white);
  border-radius: var(--radius);
  margin-bottom: 10px;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.06);
  transition: all 0.3s;
}
.faq-item.active { border-color: var(--gold); }
.faq-question {
  padding: 18px 24px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.3s;
}
.faq-item.active .faq-question { color: var(--wine); }
.faq-question .arrow { transition: transform 0.3s; font-size: 12px; }
.faq-item.active .arrow { transform: rotate(180deg); color: var(--gold); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-item.active .faq-answer { max-height: 500px; }
.faq-answer p { padding: 0 24px 18px; color: var(--text-light); font-size: 14px; line-height: 1.9; }

/* ── Footer ── */
.footer {
  background: var(--charcoal);
  color: rgba(255,255,255,0.6);
  padding: 60px 0 30px;
  border-top: 1px solid rgba(201,168,76,0.15);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand h3 { font-size: 24px; font-family: var(--font-en); color: var(--white); letter-spacing: 3px; margin-bottom: 16px; }
.footer-brand p { font-size: 13px; line-height: 1.9; }
.footer h4 { font-size: 14px; color: var(--gold); margin-bottom: 16px; font-family: var(--font-en); letter-spacing: 2px; }
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 10px; }
.footer ul li a { font-size: 13px; transition: color 0.3s; }
.footer ul li a:hover { color: var(--gold); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  text-align: center;
  font-size: 12px;
}
.footer-bottom span { color: var(--gold); }

/* ── Page Hero (inner pages) ── */
.page-hero {
  padding: 140px 0 60px;
  background: linear-gradient(135deg, var(--charcoal), var(--wine-dark));
  color: var(--white);
  text-align: center;
  position: relative;
}
.page-hero h1 { font-size: 42px; font-family: var(--font-en); letter-spacing: 4px; }
.page-hero h1 span { color: var(--gold); }
.page-hero p { color: rgba(255,255,255,0.6); margin-top: 12px; font-size: 14px; letter-spacing: 2px; }
.page-hero .breadcrumb {
  margin-top: 16px;
  font-size: 12px;
  font-family: var(--font-en);
  letter-spacing: 1px;
}
.page-hero .breadcrumb a { color: rgba(255,255,255,0.4); }
.page-hero .breadcrumb a:hover { color: var(--gold); }
.page-hero .breadcrumb span { color: var(--gold); }
.page-hero-stats {
  display: flex;
  gap: 40px;
  justify-content: center;
  margin-top: 40px;
}
.page-hero-stats .ps-item { text-align: center; }
.page-hero-stats .ps-num { font-family: var(--font-en); font-size: 28px; font-weight: 700; color: var(--gold); }
.page-hero-stats .ps-label { font-size: 11px; color: rgba(255,255,255,0.4); letter-spacing: 2px; margin-top: 4px; }

/* ── Content Layouts ── */

/* Two-column content */
.content-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.content-split.reverse { direction: rtl; }
.content-split.reverse > * { direction: ltr; }
.content-split .text h2 { font-size: 30px; margin-bottom: 16px; }
.content-split .text h2 .accent { color: var(--wine); }
.content-split .text p { color: var(--text-light); margin-bottom: 16px; line-height: 1.9; }
.content-split .visual {
  background: linear-gradient(135deg, rgba(107,29,44,0.05), rgba(26,107,78,0.05));
  border-radius: var(--radius);
  padding: 60px 40px;
  text-align: center;
  border: 1px solid rgba(201,168,76,0.15);
}
.content-split .visual .vs-icon { font-size: 64px; margin-bottom: 16px; }

/* Timeline */
.timeline { max-width: 700px; margin: 0 auto; position: relative; }
.timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), var(--emerald), var(--wine));
}
.tl-item { padding-left: 56px; margin-bottom: 40px; position: relative; }
.tl-item::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 6px;
  width: 16px;
  height: 16px;
  background: var(--gold);
  border-radius: 50%;
  border: 3px solid var(--ivory);
}
.tl-item h3 { font-size: 18px; margin-bottom: 8px; }
.tl-item h3 .year { color: var(--gold); font-family: var(--font-en); margin-right: 8px; }
.tl-item p { color: var(--text-light); font-size: 14px; }
.tl-item ul { margin-top: 8px; }
.tl-item ul li { list-style: none; color: var(--text-light); font-size: 14px; margin-bottom: 4px; padding-left: 16px; position: relative; }
.tl-item ul li::before { content: '◆'; position: absolute; left: 0; color: var(--gold); font-size: 8px; top: 3px; }

/* Comparison / Table */
.comp-table { width: 100%; border-collapse: collapse; }
.comp-table th, .comp-table td { padding: 14px 20px; text-align: left; border-bottom: 1px solid rgba(0,0,0,0.06); font-size: 14px; }
.comp-table th { background: var(--charcoal); color: var(--gold); font-family: var(--font-en); letter-spacing: 1px; font-weight: 600; }
.comp-table tr:hover td { background: rgba(201,168,76,0.05); }
.comp-table .tag {
  display: inline-block;
  padding: 2px 12px;
  border-radius: 10px;
  font-size: 12px;
}
.comp-table .tag.gold { background: var(--gold); color: var(--charcoal); }
.comp-table .tag.green { background: var(--emerald-light); color: var(--white); }
.comp-table .tag.wine { background: var(--wine-light); color: var(--white); }

/* Features List */
.feature-list { max-width: 700px; margin: 0 auto; }
.fl-item {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.fl-item:last-child { border-bottom: none; }
.fl-icon { font-size: 28px; min-width: 44px; text-align: center; }
.fl-text h4 { font-size: 16px; margin-bottom: 4px; }
.fl-text p { color: var(--text-light); font-size: 14px; }

/* Card Grid (for multi-card layouts) */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.card-grid .card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.4s;
  border: 1px solid transparent;
}
.card-grid .card:hover { transform: translateY(-4px); box-shadow: 0 12px 35px rgba(0,0,0,0.12); border-color: rgba(201,168,76,0.2); }
.card .card-body { padding: 28px; }
.card .card-body h3 { font-size: 18px; margin-bottom: 10px; }
.card .card-body p { color: var(--text-light); font-size: 14px; line-height: 1.8; }
.card .card-header {
  padding: 30px;
  text-align: center;
  font-size: 36px;
  background: linear-gradient(135deg, rgba(107,29,44,0.05), rgba(26,107,78,0.05));
}

/* Step flow */
.steps { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 30px; counter-reset: step; }
.step { text-align: center; padding: 30px 20px; background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); position: relative; }
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  top: -12px;
  left: 20px;
  font-family: var(--font-en);
  font-size: 48px;
  font-weight: 700;
  color: rgba(201,168,76,0.1);
  line-height: 1;
}
.step .s-icon { font-size: 36px; margin-bottom: 14px; }
.step h4 { font-size: 16px; margin-bottom: 8px; }
.step p { color: var(--text-light); font-size: 13px; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .content-split { grid-template-columns: 1fr; gap: 30px; }
  .hero-stats { gap: 30px; flex-wrap: wrap; }
  .hero h1 { font-size: 40px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}

@media (max-width: 768px) {
  .navbar-links { display: none; }
  .hamburger { display: flex; }
  .hero h1 { font-size: 30px; }
  .hero { min-height: 80vh; }
  .hero-stats { gap: 20px; }
  .hero-stat .num { font-size: 24px; }
  .section { padding: 50px 0; }
  .section-title { font-size: 26px; }
  .feature-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stats { gap: 20px; }
  .page-hero h1 { font-size: 30px; }
  .page-hero { padding: 110px 0 40px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .steps { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr; }
  .comp-table { display: block; overflow-x: auto; }
  .features-strip { grid-template-columns: 1fr 1fr; }
  .content-split .visual { padding: 40px 20px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 24px; }
  .hero-content .hero-badge { font-size: 10px; }
  .features-strip { grid-template-columns: 1fr; }
  .interlink-grid { grid-template-columns: repeat(2, 1fr); }
}