/* =============================================================
   gbtapp.com — 贵宾会品牌站 (森林雅致风)
   配色: 苍岭绿 #3a5a40 / 琥珀橙 #d47a2a / 檀木棕 #5c3a21 / 月白 #f0eee6
   字体: Lora (英文) + Noto Serif SC (中文)
   气质: 自然尊贵、雅致静谧、东方禅意
   ============================================================= */

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

:root {
  --forest: #3a5a40;
  --forest-dark: #2a4230;
  --forest-light: #4d7a55;
  --amber: #d47a2a;
  --amber-light: #e08f3e;
  --amber-dark: #b05f18;
  --walnut: #5c3a21;
  --walnut-light: #7a5030;
  --cream: #f0eee6;
  --cream-dark: #e4e0d4;
  --text: #2c2c2c;
  --text-light: #777;
  --white: #fff;
  --font-en: 'Lora', 'Georgia', serif;
  --font-cn: 'Noto Serif SC', 'SimSun', serif;
  --shadow: 0 4px 24px rgba(58,90,64,0.08);
  --shadow-lg: 0 12px 48px rgba(58,90,64,0.12);
  --radius: 12px;
}

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

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

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; }

h1, h2, h3, h4 { font-family: var(--font-cn); font-weight: 700; line-height: 1.3; }
.en { font-family: var(--font-en); font-style: italic; }

/* ── Buttons ── */
.btn {
  display: inline-block;
  padding: 14px 40px;
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.4s ease;
  border-radius: 8px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--amber), var(--amber-dark));
  color: var(--white);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(212,122,42,0.35); }
.btn-forest {
  background: linear-gradient(135deg, var(--forest), var(--forest-dark));
  color: var(--white);
}
.btn-forest:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(58,90,64,0.35); }
.btn-ghost {
  background: transparent;
  color: var(--forest);
  border: 2px solid var(--forest);
}
.btn-ghost:hover { background: var(--forest); color: var(--white); transform: translateY(-3px); }

/* ── Section ── */
.section { padding: 90px 0; }
.section-dark { background: var(--forest); color: var(--white); }
.section-title {
  text-align: center;
  font-size: 34px;
  margin-bottom: 10px;
}
.section-title .a { color: var(--amber); }
.section-title .f { color: var(--forest); }
.section-title .en { display: block; font-size: 14px; font-weight: 400; color: var(--text-light); margin-top: 4px; }
.section-title::after {
  content: '◇';
  display: block;
  color: var(--amber);
  font-size: 18px;
  margin: 12px auto 0;
}
.section-subtitle {
  text-align: center;
  color: var(--text-light);
  font-size: 14px;
  margin-bottom: 50px;
  font-family: var(--font-en);
  font-style: italic;
}
.section-dark .section-subtitle { color: rgba(255,255,255,0.45); }

/* ── Navigation ── */
.navbar {
  position: fixed; top: 0; width: 100%; z-index: 1000;
  background: rgba(58,90,64,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(212,122,42,0.12);
  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: linear-gradient(135deg, var(--amber), var(--amber-dark));
  color: var(--white);
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center; justify-content: center;
  border-radius: 50% 50% 50% 0;
}
.logo-text { font-size: 20px; font-weight: 700; font-family: var(--font-en); color: var(--white); letter-spacing: 2px; }
.logo-accent { color: var(--amber); font-style: italic; }

.navbar-links { display: flex; list-style: none; gap: 4px; }
.navbar-links a {
  color: rgba(255,255,255,0.6);
  padding: 8px 18px;
  font-size: 14px;
  font-family: var(--font-en);
  transition: all 0.3s;
  position: relative;
}
.navbar-links a::after {
  content: '';
  position: absolute; bottom: 2px; left: 18px; right: 18px;
  height: 2px; background: var(--amber);
  transform: scaleX(0); transition: transform 0.3s;
  border-radius: 2px;
}
.navbar-links a:hover, .navbar-links a.active { color: var(--amber); }
.navbar-links a:hover::after, .navbar-links a.active::after { transform: scaleX(1); }
.navbar-links .btn-nav {
  background: linear-gradient(135deg, var(--amber), var(--amber-dark));
  color: var(--white); padding: 10px 24px; border-radius: 8px;
}
.navbar-links .btn-nav::after { display: none; }
.navbar-links .btn-nav:hover { opacity: 0.9; color: var(--white); }

.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 5px; }
.hamburger span { display: block; width: 26px; height: 2px; background: var(--cream); border-radius: 2px; transition: all 0.3s; }
.nav-overlay {
  display: none; position: fixed; top: 72px; left: 0; width: 100%; height: calc(100vh - 72px);
  background: rgba(58,90,64,0.97); z-index: 999;
  flex-direction: column; align-items: center; justify-content: center; gap: 20px;
}
.nav-overlay a { color: rgba(255,255,255,0.7); font-size: 18px; font-family: var(--font-en); transition: color 0.3s; }
.nav-overlay a:hover { color: var(--amber); }
.nav-overlay.open { display: flex; }

/* ── Hero ── */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
  background: var(--forest-dark);
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(212,122,42,0.15) 0%, transparent 45%),
    radial-gradient(ellipse at 80% 70%, rgba(58,90,64,0.3) 0%, transparent 45%);
}
.hero-leaves { position: absolute; inset: 0; overflow: hidden; opacity: 0.06; }
.hero-leaves::before {
  content: '✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦ ✦';
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  font-size: 40px;
  color: var(--amber);
  word-break: break-all;
  line-height: 1.8;
  letter-spacing: 60px;
  padding: 20px;
}
.hero-shape {
  position: absolute;
  width: 300px; height: 300px;
  border: 1px solid rgba(212,122,42,0.05);
  bottom: -80px; left: -80px;
  border-radius: 50%;
}
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 800px; padding: 0 20px; }
.hero-badge {
  display: inline-block;
  padding: 8px 28px;
  border: 1px solid var(--amber);
  color: var(--amber);
  font-size: 12px;
  letter-spacing: 3px;
  font-family: var(--font-en);
  font-style: italic;
  margin-bottom: 28px;
  border-radius: 30px;
}
.hero h1 {
  font-size: 54px;
  color: var(--white);
  font-family: var(--font-en);
  font-weight: 700;
  margin-bottom: 18px;
}
.hero h1 span { color: var(--amber); font-style: italic; }
.hero p {
  color: rgba(255,255,255,0.5);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.9;
}
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 50px; justify-content: center; margin-top: 55px; flex-wrap: wrap; }
.hero-stat { text-align: center; }
.hero-stat .num { font-family: var(--font-en); font-size: 36px; font-weight: 700; color: var(--amber); }
.hero-stat .label { font-size: 12px; color: rgba(255,255,255,0.3); letter-spacing: 2px; margin-top: 6px; font-family: var(--font-en); }

/* ── Strip ── */
.strip-section {
  background: var(--cream-dark);
  padding: 60px 0;
}
.strip-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; max-width: 850px; margin: 0 auto; }
.strip-item { text-align: center; }
.strip-num { font-family: var(--font-en); font-size: 40px; font-weight: 700; color: var(--forest); }
.strip-label { font-size: 12px; color: var(--text-light); letter-spacing: 2px; margin-top: 8px; font-family: var(--font-en); }

/* ── Feature Cards ── */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 28px; }
.feature-card {
  background: var(--white);
  padding: 40px 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: all 0.4s;
  border: 1px solid transparent;
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(212,122,42,0.15); }
.feature-card .icon { font-size: 36px; margin-bottom: 18px; display: block; }
.feature-card h3 { font-size: 20px; margin-bottom: 10px; }
.feature-card h3 .en { display: block; font-size: 13px; color: var(--amber); font-weight: 400; margin-top: 4px; }
.feature-card p { color: var(--text-light); font-size: 14px; line-height: 1.8; }
.section-dark .feature-card { background: rgba(255,255,255,0.06); backdrop-filter: blur(10px); border-color: rgba(212,122,42,0.06); }
.section-dark .feature-card:hover { border-color: rgba(212,122,42,0.2); }
.section-dark .feature-card h3 { color: var(--white); }
.section-dark .feature-card p { color: rgba(255,255,255,0.5); }
.section-dark .feature-card .icon { filter: brightness(1.2); }

.benefits-strip { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 24px; max-width: 900px; margin: 0 auto; }
.benefit-item { text-align: center; padding: 28px 20px; }
.benefit-item .bf-icon { font-size: 38px; margin-bottom: 14px; }
.benefit-item h4 { font-size: 17px; margin-bottom: 8px; color: var(--amber); }
.benefit-item p { color: rgba(255,255,255,0.5); font-size: 13px; }

/* ── CTA ── */
.cta-section {
  padding: 90px 0;
  background: linear-gradient(135deg, var(--walnut), var(--forest-dark), var(--walnut-light));
  text-align: center; color: var(--white);
}
.cta-section h2 { font-size: 38px; font-family: var(--font-en); margin-bottom: 14px; }
.cta-section h2 .a { color: var(--amber); font-style: italic; }
.cta-section p { color: rgba(255,255,255,0.5); margin-bottom: 30px; letter-spacing: 1px; }

/* ── Interlinks ── */
.interlink-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 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(92,58,33,0.06);
}
.interlink-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--amber); }
.interlink-card .il-icon { font-size: 28px; margin-bottom: 8px; }
.interlink-card h4 { font-size: 14px; }
.interlink-card p { font-size: 12px; color: var(--text-light); }
.section-dark .interlink-card { background: rgba(255,255,255,0.06); border-color: rgba(212,122,42,0.06); }
.section-dark .interlink-card h4 { color: var(--white); }
.section-dark .interlink-card:hover { background: rgba(255,255,255,0.1); }

/* ── 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(0,0,0,0.04);
  transition: all 0.3s;
}
.faq-item.active { border-color: var(--amber); }
.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(--amber); }
.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 18px; color: var(--text-light); font-size: 14px; line-height: 1.9; }

/* ── Footer ── */
.footer {
  background: var(--forest-dark);
  color: rgba(255,255,255,0.45);
  padding: 60px 0 30px;
  border-top: 1px solid rgba(212,122,42,0.08);
}
.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); margin-bottom: 14px; }
.footer-brand p { font-size: 13px; line-height: 1.9; }
.footer h4 { font-size: 14px; color: var(--amber); margin-bottom: 16px; font-family: var(--font-en); }
.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(--amber); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.05); padding-top: 24px; text-align: center; font-size: 12px; }

/* ── Page Hero ── */
.page-hero {
  padding: 150px 0 60px;
  background: linear-gradient(135deg, var(--forest), var(--walnut));
  color: var(--white);
  text-align: center;
  position: relative;
}
.page-hero::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--amber), transparent);
}
.page-hero h1 { font-size: 42px; font-family: var(--font-en); }
.page-hero h1 span { color: var(--amber); font-style: italic; }
.page-hero p { color: rgba(255,255,255,0.45); margin-top: 14px; font-size: 14px; letter-spacing: 2px; }
.page-hero .breadcrumb { margin-top: 16px; font-size: 12px; font-family: var(--font-en); }
.page-hero .breadcrumb a { color: rgba(255,255,255,0.35); }
.page-hero .breadcrumb a:hover { color: var(--amber); }
.page-hero .breadcrumb span { color: var(--amber); }
.page-hero-stats { display: flex; gap: 40px; justify-content: center; margin-top: 36px; 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: 700; color: var(--amber); }
.page-hero-stats .ps-label { font-size: 11px; color: rgba(255,255,255,0.35); letter-spacing: 2px; margin-top: 4px; }

/* ── 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: 16px; }
.content-split .text h2 .a { color: var(--amber); }
.content-split .text p { color: var(--text-light); margin-bottom: 16px; line-height: 1.9; font-size: 15px; }
.content-split .visual {
  background: linear-gradient(135deg, rgba(58,90,64,0.04), rgba(212,122,42,0.04));
  border-radius: var(--radius);
  padding: 60px 40px;
  text-align: center;
  border: 1px solid rgba(212,122,42,0.08);
}
.content-split .visual .vs-icon { font-size: 64px; margin-bottom: 16px; display: block; }
.content-split .visual h3 { font-family: var(--font-en); font-style: italic; color: var(--amber); font-size: 20px; }
.content-split .visual p { color: var(--text-light); margin-top: 8px; font-size: 13px; }

/* Timeline */
.timeline { max-width: 680px; margin: 0 auto; position: relative; }
.timeline::before {
  content: ''; position: absolute; left: 20px; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--amber), var(--forest), var(--walnut));
}
.tl-item { padding-left: 60px; margin-bottom: 40px; position: relative; }
.tl-item::before {
  content: '◇'; position: absolute; left: 8px; top: 2px;
  font-size: 24px; color: var(--amber);
}
.tl-item h3 { font-size: 19px; margin-bottom: 6px; }
.tl-item h3 .year { color: var(--amber); font-weight: 700; margin-right: 10px; font-family: var(--font-en); }
.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: 18px; position: relative; }
.tl-item ul li::before { content: '•'; position: absolute; left: 0; color: var(--amber); }

/* 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(0,0,0,0.04); font-size: 14px; }
.comp-table th { background: var(--forest); color: var(--amber); font-family: var(--font-en); font-weight: 600; }
.comp-table tr:hover td { background: rgba(212,122,42,0.03); }
.comp-table .tag { display: inline-block; padding: 3px 14px; border-radius: 20px; font-size: 11px; font-weight: 600; }
.comp-table .tag.amber { background: var(--amber); color: var(--white); }
.comp-table .tag.forest { background: var(--forest); color: var(--white); }
.comp-table .tag.cream { background: var(--cream-dark); color: var(--walnut); }

/* Feature List */
.feature-list { max-width: 700px; margin: 0 auto; }
.fl-item { display: flex; gap: 20px; padding: 24px 0; border-bottom: 1px solid rgba(0,0,0,0.04); }
.fl-item:last-child { border-bottom: none; }
.fl-icon { font-size: 28px; min-width: 44px; text-align: center; }
.fl-text h4 { font-size: 17px; margin-bottom: 4px; }
.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: 24px; }
.card-grid .card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.4s;
}
.card-grid .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.card .card-body { padding: 30px; }
.card .card-body h3 { font-size: 18px; margin-bottom: 8px; }
.card .card-body p { color: var(--text-light); font-size: 14px; line-height: 1.8; }
.card .card-header { padding: 36px; text-align: center; font-size: 40px; background: linear-gradient(135deg, rgba(58,90,64,0.04), rgba(212,122,42,0.04)); }
.section-dark .card-grid .card { background: rgba(255,255,255,0.06); border: 1px solid rgba(212,122,42,0.06); }
.section-dark .card .card-header { background: rgba(212,122,42,0.06); }
.section-dark .card .card-body h3 { color: var(--white); }
.section-dark .card .card-body p { color: rgba(255,255,255,0.5); }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 28px; counter-reset: step; }
.step { text-align: center; padding: 32px 24px; background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow); position: relative; }
.step::before {
  counter-increment: step;
  content: counter(step) ".";
  position: absolute; top: 16px; left: 24px;
  font-family: var(--font-en);
  font-size: 48px;
  font-weight: 700;
  color: rgba(212,122,42,0.08);
  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; }
  .hero h1 { font-size: 40px; }
  .strip-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}
@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: 28px; }
  .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); }
}