/* ============================================
   QQ靓号批发平台 - 全站样式
   配色：深蓝主色 + 金色强调
   ============================================ */

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

:root {
  --color-primary: #0f2942;
  --color-primary-light: #1a365d;
  --color-primary-dark: #0a1f33;
  --color-accent: #d4a843;
  --color-accent-light: #f0b429;
  --color-accent-dark: #b8912e;
  --color-bg: #f5f7fa;
  --color-white: #ffffff;
  --color-text: #2d3748;
  --color-text-light: #718096;
  --color-border: #e2e8f0;
  --color-success: #38a169;
  --color-danger: #e53e3e;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.15);
  --radius: 8px;
  --radius-lg: 12px;
  --transition: all 0.3s ease;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

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

/* ---- 顶部导航 ---- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(15, 41, 66, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-white);
  font-size: 1.3rem;
  font-weight: 700;
}

.logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-weight: 900;
  font-size: 1.1rem;
}

.logo span { color: var(--color-accent); }

.main-nav {
  display: flex;
  gap: 8px;
  list-style: none;
}

.main-nav a {
  color: rgba(255,255,255,0.85);
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 500;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-accent);
  background: rgba(212, 168, 67, 0.1);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ---- Hero 区域 ---- */
.hero {
  margin-top: 64px;
  min-height: 520px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../pic/hero-bg.jpg') center/cover;
  opacity: 0.35;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 640px;
  padding: 80px 0;
}

.hero h1 {
  font-size: 2.8rem;
  color: var(--color-white);
  line-height: 1.2;
  margin-bottom: 20px;
  font-weight: 800;
}

.hero h1 .highlight {
  color: var(--color-accent);
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 32px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---- 按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  color: var(--color-primary-dark);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(212, 168, 67, 0.4);
  color: var(--color-primary-dark);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-block { width: 100%; }

/* ---- 通用区块 ---- */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title h2 {
  font-size: 2rem;
  color: var(--color-primary);
  margin-bottom: 12px;
  font-weight: 700;
}

.section-title p {
  color: var(--color-text-light);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ---- 特色优势卡片 ---- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--color-white);
  padding: 32px 24px;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.feature-icon {
  width: 56px; height: 56px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, rgba(212,168,67,0.15), rgba(240,180,41,0.1));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

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

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

/* ---- 流程步骤 ---- */
.steps-wrap {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  box-shadow: var(--shadow-sm);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.step-item {
  text-align: center;
  position: relative;
}

.step-num {
  width: 48px; height: 48px;
  background: var(--color-primary);
  color: var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 auto 16px;
}

.step-item h4 {
  color: var(--color-primary);
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.step-item p {
  color: var(--color-text-light);
  font-size: 0.88rem;
}

/* ---- 号码展示区 ---- */
.numbers-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.numbers-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.numbers-info h3 {
  font-size: 1.8rem;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.numbers-info p {
  color: var(--color-text-light);
  margin-bottom: 24px;
  line-height: 1.8;
}

.numbers-list {
  list-style: none;
}

.numbers-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
}

.numbers-list li:last-child { border-bottom: none; }

.check-icon {
  width: 20px; height: 20px;
  background: var(--color-success);
  color: white;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
}

/* ---- CTA 区块 ---- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  padding: 60px 0;
  text-align: center;
}

.cta-section h2 {
  color: var(--color-white);
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.cta-section p {
  color: rgba(255,255,255,0.7);
  margin-bottom: 28px;
}

/* ---- 页脚 ---- */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.7);
  padding: 48px 0 24px;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-col h4 {
  color: var(--color-white);
  margin-bottom: 16px;
  font-size: 1rem;
}

.footer-col ul {
  list-style: none;
}

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

.footer-col a {
  color: rgba(255,255,255,0.6);
}

.footer-col a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  text-align: center;
  color: rgba(255,255,255,0.4);
  font-size: 0.85rem;
}

/* ============================================
   靓号选择页
   ============================================ */
.page-hero {
  margin-top: 64px;
  padding: 60px 0;
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  text-align: center;
  color: var(--color-white);
}

.page-hero h1 {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.page-hero p {
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  margin: 0 auto;
}

/* 筛选栏 */
.filter-bar {
  background: var(--color-white);
  padding: 20px 24px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin: -30px auto 40px;
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.filter-group label {
  font-size: 0.9rem;
  color: var(--color-text-light);
  white-space: nowrap;
}

.filter-group select {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.9rem;
  background: var(--color-white);
  color: var(--color-text);
  cursor: pointer;
}

/* 号码网格 */
.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.number-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 2px solid transparent;
}

.number-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.number-badge {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-light));
  padding: 24px 16px;
  text-align: center;
  position: relative;
}

.number-badge .num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: 2px;
  font-family: "Courier New", monospace;
}

.number-tag {
  position: absolute;
  top: 10px; right: 10px;
  background: var(--color-accent);
  color: var(--color-primary-dark);
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.number-info {
  padding: 16px;
}

.number-info .type {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.number-info .price {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-danger);
}

.number-info .price small {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-text-light);
}

.number-info .btn {
  margin-top: 12px;
  padding: 8px 16px;
  font-size: 0.85rem;
}

/* ============================================
   联系我们页
   ============================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.contact-info-card {
  background: var(--color-white);
  padding: 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.contact-info-card h3 {
  color: var(--color-primary);
  margin-bottom: 24px;
  font-size: 1.3rem;
}

.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  align-items: flex-start;
}

.contact-item:last-child { margin-bottom: 0; }

.contact-icon {
  width: 44px; height: 44px;
  background: rgba(212,168,67,0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.2rem;
}

.contact-item h4 {
  color: var(--color-primary);
  font-size: 0.95rem;
  margin-bottom: 4px;
}

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

.contact-form-card {
  background: var(--color-white);
  padding: 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.contact-form-card h3 {
  color: var(--color-primary);
  margin-bottom: 24px;
  font-size: 1.3rem;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--color-text);
  font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(212,168,67,0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

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

.faq-item {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--color-primary);
  font-size: 1.02rem;
  transition: var(--transition);
}

.faq-question:hover {
  background: rgba(212,168,67,0.05);
}

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

.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-inner {
  padding: 0 24px 20px;
  color: var(--color-text-light);
  line-height: 1.8;
  font-size: 0.95rem;
}

/* ---- Toast 提示 ---- */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-primary);
  color: var(--color-white);
  padding: 12px 24px;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  z-index: 9999;
  opacity: 0;
  transition: all 0.3s ease;
  font-size: 0.95rem;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ============================================
   响应式适配
   ============================================ */
@media (max-width: 992px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .numbers-grid { grid-template-columns: repeat(3, 1fr); }
  .numbers-showcase { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .section { padding: 56px 0; }
  .section-title h2 { font-size: 1.6rem; }

  .nav-toggle { display: block; }
  .main-nav {
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--color-primary);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .main-nav a { display: block; padding: 12px 16px; }

  .numbers-grid { grid-template-columns: repeat(2, 1fr); }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .filter-group { flex-direction: column; align-items: flex-start; }
  .filter-group select { width: 100%; }
}

@media (max-width: 480px) {
  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .numbers-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.6rem; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; }
}