/* =============================================================
   gbtyl.com — 贵宾厅集团 (复古探险奢华风)
   配色: 熔岩黑 #1c0f0a / 火焰红 #e63946 / 铜锈绿 #457b5e / 暖沙 #f4e9cd
   字体: "Barlow Condensed" (英文) + "ZCOOL QingKe HuangYou" (中文)
   气质: 粗犷复古、探险奢华、力量感
   ============================================================= */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;500;600;700;800&family=ZCOOL+XiaoWei&display=swap');

:root {
  --lava: #1c0f0a;
  --lava-dark: #100806;
  --lava-light: #2e1a14;
  --flame: #e63946;
  --flame-dark: #c02330;
  --flame-light: #f05a65;
  --verdigris: #457b5e;
  --verdigris-light: #5a9e7a;
  --verdigris-dark: #2f5a42;
  --sand: #f4e9cd;
  --sand-dark: #e6d5b0;
  --sand-light: #faf3e0;
  --text: #1a1a1a;
  --text-light: #6b5b4e;
  --white: #fff;
  --font-en: 'Barlow Condensed', 'Arial Narrow', sans-serif;
  --font-cn: 'ZCOOL XiaoWei', 'Noto Serif SC', serif;
  --shadow: 0 4px 20px rgba(0,0,0,0.15);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.2);
}

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

body {
  font-family: var(--font-cn);
  color: var(--text);
  background: var(--sand);
  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%; }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.2; }
.en { font-family: var(--font-en); font-weight: 600; letter-spacing: 2px; text-transform: uppercase; }

/* ── Buttons ── */
.btn {
  display: inline-block;
  padding: 14px 44px;
  font-family: var(--font-en);
  font-size: 15px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 3px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
}
.btn::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 4px;
  right: -3px;
  height: 100%;
  border: 2px solid currentColor;
  opacity: 0.15;
  transition: all 0.3s;
}
.btn:hover::after { left: 0; right: 0; bottom: 0; }
.btn-primary {
  background: var(--flame);
  color: var(--white);
  border-bottom: 3px solid var(--flame-dark);
}
.btn-primary:hover { background: var(--flame-dark); transform: translateY(-2px); }
.btn-verdigris {
  background: var(--verdigris);
  color: var(--white);
  border-bottom: 3px solid var(--verdigris-dark);
}
.btn-verdigris:hover { background: var(--verdigris-dark); transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  color: var(--flame);
  border: 2px solid var(--flame);
}
.btn-outline:hover { background: var(--flame); color: var(--white); }

/* ── Section ── */
.section { padding: 90px 0; }
.section-title {
  text-align: center;
  font-size: 36px;
  margin-bottom: 8px;
  font-family: var(--font-en);
  letter-spacing: 4px;
  text-transform: uppercase;
  position: relative;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
}
.section-title .f { color: var(--flame); }
.section-title .v { color: var(--verdigris); }
.section-title .ornament {
  display: block;
  font-family: var(--font-cn);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 6px;
  color: var(--text-light);
  margin-top: 4px;
}
.section-title::before {
  content: '◆';
  display: inline-block;
  color: var(--flame);
  font-size: 10px;
  margin-right: 10px;
  vertical-align: middle;
}
.section-title::after {
  content: '◆';
  display: inline-block;
  color: var(--flame);
  font-size: 10px;
  margin-left: 10px;
  vertical-align: middle;
}
.section-subtitle {
  text-align: center;
  color: var(--text-light);
  font-size: 13px;
  margin-bottom: 50px;
  font-family: var(--font-en);
  letter-spacing: 4px;
}

.section-dark { background: var(--lava); color: var(--white); }
.section-dark .section-subtitle { color: rgba(255,255,255,0.35); }
.section-dark .section-title .ornament { color: rgba(255,255,255,0.35); }

/* ── Navigation ── */
.navbar {
  position: fixed; top: 0; width: 100%; z-index: 1000;
  background: rgba(28,15,10,0.92);
  border-bottom: 3px solid rgba(230,57,70,0.2);
  transition: all 0.3s;
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.navbar-brand { display: flex; align-items: center; gap: 12px; }
.logo-icon {
  width: 36px; height: 36px;
  background: var(--flame);
  color: var(--white);
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 85%, 0 100%);
}
.logo-text { font-size: 22px; font-weight: 700; font-family: var(--font-en); color: var(--white); letter-spacing: 4px; }
.logo-accent { color: var(--flame); }

.navbar-links { display: flex; list-style: none; gap: 2px; }
.navbar-links a {
  color: rgba(255,255,255,0.5);
  padding: 8px 16px;
  font-size: 14px;
  font-family: var(--font-en);
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: all 0.3s;
  position: relative;
}
.navbar-links a::before {
  content: '';
  position: absolute; bottom: 0; left: 16px; right: 16px;
  height: 2px; background: var(--flame);
  transform: scaleX(0); transition: transform 0.3s;
}
.navbar-links a:hover, .navbar-links a.active { color: var(--flame); }
.navbar-links a:hover::before, .navbar-links a.active::before { transform: scaleX(1); }
.navbar-links .btn-nav {
  background: var(--flame); color: var(--white); padding: 8px 24px;
  font-weight: 700;
}
.navbar-links .btn-nav::before { display: none; }
.navbar-links .btn-nav:hover { background: var(--flame-dark); color: var(--white); }

.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(--sand); transition: all 0.3s; }
.nav-overlay {
  display: none; position: fixed; top: 72px; left: 0; width: 100%; height: calc(100vh - 72px);
  background: rgba(28,15,10,0.97); z-index: 999;
  flex-direction: column; align-items: center; justify-content: center; gap: 16px;
}
.nav-overlay a { color: rgba(255,255,255,0.55); font-size: 17px; font-family: var(--font-en); letter-spacing: 3px; transition: color 0.3s; text-transform: uppercase; }
.nav-overlay a:hover { color: var(--flame); }
.nav-overlay.open { display: flex; }

/* ── Hero ── */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
  background: var(--lava);
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(230,57,70,0.12) 0%, transparent 45%),
    radial-gradient(ellipse at 80% 80%, rgba(69,123,94,0.1) 0%, transparent 45%);
}
.hero-texture {
  position: absolute; inset: 0;
  opacity: 0.03;
  background-image: 
    repeating-linear-gradient(0deg, transparent, transparent 40px, var(--sand) 40px, var(--sand) 41px),
    repeating-linear-gradient(90deg, transparent, transparent 40px, var(--sand) 40px, var(--sand) 41px);
}
.hero-ornament {
  position: absolute;
  top: 10%; left: 5%;
  font-size: 200px;
  color: rgba(230,57,70,0.02);
  font-family: var(--font-en);
  font-weight: 800;
  pointer-events: none;
  user-select: none;
}
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 800px; padding: 0 20px; }
.hero-badge {
  display: inline-block;
  padding: 8px 24px;
  background: rgba(230,57,70,0.1);
  border-left: 3px solid var(--flame);
  color: var(--flame);
  font-size: 12px;
  letter-spacing: 4px;
  font-family: var(--font-en);
  text-transform: uppercase;
  margin-bottom: 28px;
}
.hero h1 {
  font-size: 60px;
  color: var(--white);
  font-family: var(--font-en);
  font-weight: 800;
  letter-spacing: 6px;
  text-transform: uppercase;
  margin-bottom: 16px;
  line-height: 1;
}
.hero h1 span { color: var(--flame); }
.hero p { color: rgba(255,255,255,0.4); font-size: 16px; max-width: 550px; margin: 0 auto 36px; line-height: 1.9; }
.hero-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 45px; justify-content: center; margin-top: 50px; flex-wrap: wrap; }
.hero-stat { text-align: center; }
.hero-stat .num { font-family: var(--font-en); font-size: 34px; font-weight: 800; color: var(--flame); }
.hero-stat .label { font-size: 11px; color: rgba(255,255,255,0.25); letter-spacing: 3px; margin-top: 6px; font-family: var(--font-en); text-transform: uppercase; }

/* ── Strip ── */
.strip-section { background: var(--lava-light); padding: 60px 0; border-top: 1px solid rgba(230,57,70,0.08); border-bottom: 1px solid rgba(230,57,70,0.08); }
.strip-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; max-width: 800px; margin: 0 auto; }
.strip-item { text-align: center; }
.strip-num { font-family: var(--font-en); font-size: 38px; font-weight: 800; color: var(--flame); }
.strip-label { font-size: 11px; color: rgba(255,255,255,0.3); letter-spacing: 3px; margin-top: 8px; font-family: var(--font-en); text-transform: uppercase; }

/* ── Feature Cards ── */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.feature-card {
  background: var(--white);
  padding: 36px 28px;
  transition: all 0.4s;
  border: 1px solid rgba(0,0,0,0.04);
  position: relative;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--flame); }
.feature-card .icon { font-size: 34px; margin-bottom: 16px; display: block; }
.feature-card h3 { font-size: 20px; margin-bottom: 8px; font-family: var(--font-en); letter-spacing: 2px; text-transform: uppercase; }
.feature-card h3 .cn { display: block; font-family: var(--font-cn); font-size: 13px; font-weight: 400; color: var(--text-light); letter-spacing: 0; text-transform: none; margin-top: 4px; }
.feature-card p { color: var(--text-light); font-size: 14px; line-height: 1.8; }
.section-dark .feature-card { background: rgba(255,255,255,0.03); border-color: rgba(230,57,70,0.05); }
.section-dark .feature-card:hover { border-color: var(--flame); }
.section-dark .feature-card h3 { color: var(--white); }
.section-dark .feature-card p { color: rgba(255,255,255,0.45); }
.section-dark .feature-card h3 .cn { color: rgba(255,255,255,0.35); }

.benefits-strip { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; max-width: 900px; margin: 0 auto; }
.benefit-item { text-align: center; padding: 28px 20px; }
.benefit-item .bf-icon { font-size: 36px; margin-bottom: 12px; }
.benefit-item h4 { font-size: 16px; margin-bottom: 6px; font-family: var(--font-en); letter-spacing: 2px; text-transform: uppercase; color: var(--flame); }
.benefit-item p { font-size: 13px; color: rgba(255,255,255,0.4); }

/* ── CTA ── */
.cta-section {
  padding: 90px 0;
  background: linear-gradient(135deg, var(--lava), var(--lava-dark));
  text-align: center; color: var(--white);
  position: relative;
}
.cta-section::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--flame), var(--verdigris), var(--flame));
}
.cta-section h2 { font-size: 38px; font-family: var(--font-en); letter-spacing: 6px; text-transform: uppercase; margin-bottom: 14px; }
.cta-section h2 .f { color: var(--flame); }
.cta-section p { color: rgba(255,255,255,0.35); margin-bottom: 30px; letter-spacing: 3px; font-family: var(--font-en); }

/* ── Interlinks ── */
.interlink-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }
.interlink-card {
  background: var(--white);
  padding: 20px 14px;
  text-align: center;
  transition: all 0.3s;
  border: 1px solid rgba(0,0,0,0.03);
}
.interlink-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--flame); }
.interlink-card .il-icon { font-size: 26px; margin-bottom: 6px; }
.interlink-card h4 { font-size: 12px; font-family: var(--font-en); letter-spacing: 1px; text-transform: uppercase; }
.section-dark .interlink-card { background: rgba(255,255,255,0.03); border-color: rgba(230,57,70,0.04); }
.section-dark .interlink-card h4 { color: var(--white); }
.section-dark .interlink-card:hover { background: rgba(230,57,70,0.08); }

/* ── FAQ ── */
.faq-list { max-width: 680px; margin: 0 auto; }
.faq-item {
  background: var(--white);
  margin-bottom: 8px;
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.03);
  transition: all 0.3s;
}
.faq-item.active { border-color: var(--flame); border-left-width: 3px; }
.faq-question {
  padding: 16px 24px; cursor: pointer;
  font-size: 15px; font-weight: 600;
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-en); letter-spacing: 1px; text-transform: uppercase;
  transition: background 0.2s;
}
.faq-item.active .faq-question { color: var(--flame); }
.faq-question .arrow { transition: transform 0.3s; font-size: 12px; }
.faq-item.active .arrow { transform: rotate(180deg); }
.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 16px; color: var(--text-light); font-size: 14px; line-height: 1.9; }

/* ── Footer ── */
.footer {
  background: var(--lava-dark);
  color: rgba(255,255,255,0.35);
  padding: 60px 0 30px;
  border-top: 3px solid rgba(230,57,70,0.08);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand h3 { font-size: 22px; font-family: var(--font-en); color: var(--white); letter-spacing: 4px; text-transform: uppercase; margin-bottom: 12px; }
.footer-brand p { font-size: 13px; line-height: 1.9; }
.footer h4 { font-size: 13px; color: var(--flame); margin-bottom: 14px; font-family: var(--font-en); letter-spacing: 3px; text-transform: uppercase; }
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 8px; }
.footer ul li a { font-size: 13px; transition: color 0.3s; }
.footer ul li a:hover { color: var(--flame); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.04); padding-top: 24px; text-align: center; font-size: 12px; }

/* ── Page Hero ── */
.page-hero {
  padding: 140px 0 60px;
  background: linear-gradient(135deg, var(--lava), var(--lava-light));
  color: var(--white);
  text-align: center;
  position: relative;
}
.page-hero::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--flame), var(--verdigris), var(--flame));
}
.page-hero h1 { font-size: 44px; font-family: var(--font-en); letter-spacing: 6px; text-transform: uppercase; }
.page-hero h1 span { color: var(--flame); }
.page-hero p { color: rgba(255,255,255,0.35); margin-top: 14px; font-size: 14px; letter-spacing: 3px; }
.page-hero .breadcrumb { margin-top: 14px; font-size: 12px; font-family: var(--font-en); letter-spacing: 2px; }
.page-hero .breadcrumb a { color: rgba(255,255,255,0.3); }
.page-hero .breadcrumb a:hover { color: var(--flame); }
.page-hero .breadcrumb span { color: var(--flame); }
.page-hero-stats { display: flex; gap: 36px; justify-content: center; margin-top: 32px; flex-wrap: wrap; }
.page-hero-stats .ps-item { text-align: center; }
.page-hero-stats .ps-num { font-family: var(--font-en); font-size: 30px; font-weight: 800; color: var(--flame); }
.page-hero-stats .ps-label { font-size: 11px; color: rgba(255,255,255,0.3); letter-spacing: 2px; margin-top: 4px; text-transform: uppercase; }

/* ── Content Layouts ── */

/* Content Split */
.content-split { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.content-split.reverse { direction: rtl; }
.content-split.reverse > * { direction: ltr; }
.content-split .text h2 { font-size: 32px; margin-bottom: 14px; font-family: var(--font-en); letter-spacing: 3px; text-transform: uppercase; }
.content-split .text h2 .a { color: var(--flame); }
.content-split .text p { color: var(--text-light); margin-bottom: 14px; line-height: 1.9; font-size: 15px; }
.content-split .visual {
  background: linear-gradient(135deg, rgba(230,57,70,0.03), rgba(69,123,94,0.03));
  padding: 60px 40px;
  text-align: center;
  border: 1px solid rgba(230,57,70,0.06);
}
.content-split .visual .vs-icon { font-size: 64px; margin-bottom: 16px; display: block; }
.content-split .visual h3 { font-family: var(--font-en); letter-spacing: 4px; text-transform: uppercase; color: var(--flame); font-size: 20px; }
.content-split .visual p { color: var(--text-light); margin-top: 8px; font-size: 13px; }

/* Timeline */
.timeline { max-width: 650px; margin: 0 auto; position: relative; }
.timeline::before {
  content: ''; position: absolute; left: 18px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--flame), var(--verdigris));
}
.tl-item { padding-left: 52px; margin-bottom: 36px; position: relative; }
.tl-item::before {
  content: ''; position: absolute; left: 8px; top: 4px;
  width: 22px; height: 22px;
  background: var(--flame);
  clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
}
.tl-item h3 { font-size: 18px; margin-bottom: 6px; font-family: var(--font-en); letter-spacing: 2px; text-transform: uppercase; }
.tl-item h3 .year { color: var(--flame); font-weight: 700; margin-right: 8px; }
.tl-item p { color: var(--text-light); font-size: 14px; }
.tl-item ul { margin-top: 6px; }
.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(--flame); font-size: 8px; top: 3px; }

/* Table */
.comp-table { width: 100%; border-collapse: collapse; }
.comp-table th, .comp-table td { padding: 14px 18px; text-align: left; border-bottom: 1px solid rgba(0,0,0,0.04); font-size: 14px; }
.comp-table th { background: var(--lava); color: var(--flame); font-family: var(--font-en); letter-spacing: 2px; font-weight: 600; text-transform: uppercase; }
.comp-table tr:hover td { background: rgba(230,57,70,0.02); }
.comp-table .tag { display: inline-block; padding: 3px 14px; font-size: 11px; font-weight: 600; }
.comp-table .tag.flame { background: var(--flame); color: var(--white); }
.comp-table .tag.green { background: var(--verdigris); color: var(--white); }
.comp-table .tag.sand { background: var(--sand-dark); color: var(--lava); }

/* Feature List */
.feature-list { max-width: 700px; margin: 0 auto; }
.fl-item { display: flex; gap: 18px; padding: 22px 0; border-bottom: 1px solid rgba(0,0,0,0.03); }
.fl-item:last-child { border-bottom: none; }
.fl-icon { font-size: 26px; min-width: 40px; text-align: center; }
.fl-text h4 { font-size: 16px; margin-bottom: 4px; font-family: var(--font-en); letter-spacing: 1px; text-transform: uppercase; }
.fl-text p { color: var(--text-light); font-size: 14px; }

/* Card Grid */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.card-grid .card {
  background: var(--white);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.4s;
  border: 1px solid transparent;
}
.card-grid .card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: var(--flame); }
.card .card-body { padding: 28px; }
.card .card-body h3 { font-size: 17px; margin-bottom: 6px; font-family: var(--font-en); letter-spacing: 2px; text-transform: uppercase; }
.card .card-body p { color: var(--text-light); font-size: 14px; line-height: 1.8; }
.card .card-header { padding: 32px; text-align: center; font-size: 36px; background: linear-gradient(135deg, rgba(230,57,70,0.03), rgba(69,123,94,0.03)); }
.section-dark .card-grid .card { background: rgba(255,255,255,0.03); border-color: rgba(230,57,70,0.04); }
.section-dark .card .card-header { background: rgba(230,57,70,0.04); }
.section-dark .card .card-body h3 { color: var(--white); }
.section-dark .card .card-body p { color: rgba(255,255,255,0.45); }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 20px; counter-reset: step; }
.step { text-align: center; padding: 30px 20px; background: var(--white); box-shadow: var(--shadow); position: relative; }
.step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute; top: -8px; left: 20px;
  font-family: var(--font-en);
  font-size: 52px;
  font-weight: 800;
  color: rgba(230,57,70,0.06);
  line-height: 1;
}
.step .s-icon { font-size: 34px; margin-bottom: 12px; }
.step h4 { font-size: 15px; margin-bottom: 6px; font-family: var(--font-en); letter-spacing: 2px; text-transform: uppercase; }
.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: 24px; }
  .hero h1 { font-size: 40px; }
  .strip-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
}
@media (max-width: 768px) {
  .navbar-links { display: none; }
  .hamburger { display: flex; }
  .hero h1 { font-size: 32px; }
  .hero { min-height: 80vh; }
  .hero-stat .num { font-size: 24px; }
  .section { padding: 60px 0; }
  .section-title { font-size: 26px; }
  .feature-grid { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 30px; }
  .page-hero { padding: 120px 0 40px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .steps { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr; }
  .benefits-strip { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .strip-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 26px; }
  .benefits-strip { grid-template-columns: 1fr; }
  .interlink-grid { grid-template-columns: repeat(2, 1fr); }
}