:root {
  --primary: #0d9488;
  --primary-dark: #0f766e;
  --primary-light: #f0fdfa;
  --accent: #f59e0b;
  --accent-light: #fffbeb;
  --text: #1f2937;
  --text-secondary: #4b5563;
  --muted: #9ca3af;
  --border: #e5e7eb;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.08);
  --max-width: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg-soft);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 700;
  font-size: 18px;
}
.brand img { flex-shrink: 0; }
.brand-name { white-space: nowrap; }
.main-nav {
  display: flex;
  gap: 8px;
}
.main-nav a {
  padding: 8px 16px;
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
}
.main-nav a:hover,
.main-nav a.active {
  color: var(--primary);
  background: var(--primary-light);
}
.auth-links { display: flex; align-items: center; gap: 12px; }
.header-extra-links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-right: 12px;
}
.extra-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  transition: all 0.15s ease;
}
.extra-link:hover {
  color: var(--primary);
  background: var(--primary-light);
  border-color: var(--primary);
}
.extra-link svg { width: 16px; height: 16px; }
.user-menu {
  display: flex;
  align-items: center;
  gap: 16px;
}
.user-link {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 14px;
}
.user-link svg { width: 18px; height: 18px; }
.admin-entry {
  font-size: 13px;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--accent-light);
  color: #b45309;
  font-weight: 500;
}
.btn-text {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  padding: 0;
}
.btn-text:hover { color: var(--text); }
.btn-text svg { width: 18px; height: 18px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-ghost {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-ghost:hover { background: var(--primary-light); }
.btn-accent {
  background: var(--accent);
  color: #78350f;
}
.btn-accent:hover { background: #d97706; }
.btn-sm { padding: 6px 12px; font-size: 13px; }

/* Main */
main { flex: 1; }
.page-section { padding: 48px 0; }
.page-title {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 8px;
}
.page-subtitle { color: var(--text-secondary); margin: 0 0 24px; }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--primary-light) 0%, #fff 100%);
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--border);
}
.hero-inner { display: flex; align-items: center; gap: 48px; }
.hero-content { flex: 1; }
.hero-content h1 {
  font-size: 40px;
  line-height: 1.2;
  margin: 0 0 16px;
  color: var(--text);
}
.hero-content p {
  font-size: 17px;
  color: var(--text-secondary);
  margin: 0 0 28px;
  max-width: 560px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-image {
  width: 420px;
  flex-shrink: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
}
.hero-image img { width: 100%; height: 280px; object-fit: cover; }

/* Categories */
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 32px;
}
.category-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: all 0.15s ease;
}
.category-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.category-card .cat-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 14px;
  color: var(--primary);
}
.category-card h3 { margin: 0 0 6px; font-size: 17px; }
.category-card p { margin: 0; font-size: 13px; color: var(--text-secondary); }

/* Search bar */
.search-bar {
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.search-bar input[type="text"] {
  flex: 1;
  min-width: 240px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  background: var(--bg);
}
.search-bar select {
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  background: var(--bg);
  min-width: 140px;
}

/* Listing cards */
.listing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.listing-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.15s ease;
}
.listing-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.card-cover { display: block; position: relative; }
.card-cover img { width: 100%; height: 200px; object-fit: cover; }
.card-category {
  position: absolute;
  left: 12px;
  top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(255,255,255,0.95);
  color: var(--primary-dark);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}
.card-category svg { width: 14px; height: 14px; }
.card-body { padding: 18px; }
.card-body h3 {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.4;
}
.card-body h3 a { color: var(--text); }
.card-body h3 a:hover { color: var(--primary); }
.card-summary {
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0 0 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 12px;
}
.card-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}
.publisher { color: var(--text-secondary); }
.price { color: #b45309; font-weight: 700; }

.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-secondary);
}

/* Detail */
.detail-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 32px;
  align-items: start;
}
.detail-main {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.detail-cover { width: 100%; height: 360px; object-fit: cover; }
.detail-content { padding: 28px; }
.detail-content h1 { margin: 0 0 12px; font-size: 26px; }
.detail-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.detail-meta span {
  font-size: 13px;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.detail-meta svg { width: 14px; height: 14px; }
.detail-body {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  white-space: pre-wrap;
}
.detail-section {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.detail-section h3 { font-size: 16px; margin: 0 0 10px; }
.detail-section p { margin: 0; color: var(--text-secondary); }

.detail-sidebar { display: flex; flex-direction: column; gap: 20px; }
.contact-card,
.notice-card,
.platform-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.contact-card h3,
.notice-card h3,
.platform-card h3 { margin: 0 0 14px; font-size: 16px; }
.contact-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--text-secondary);
}
.contact-row svg { width: 18px; height: 18px; color: var(--primary); flex-shrink: 0; }
.phone-box {
  background: var(--primary-light);
  border-radius: 8px;
  padding: 14px;
  text-align: center;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-top: 8px;
}
.login-tip {
  margin-top: 10px;
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}
.platform-card p { font-size: 13px; color: var(--text-secondary); margin: 0; }

/* Forms */
.form-card {
  max-width: 520px;
  margin: 0 auto;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.form-card h2 { margin: 0 0 6px; font-size: 24px; }
.form-card .form-hint { color: var(--text-secondary); margin-bottom: 24px; font-size: 14px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 600;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  background: var(--bg);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-group small {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}
.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--text-secondary);
}
.checkbox-row input { margin-top: 3px; }
.form-actions { margin-top: 24px; }
.form-actions .btn { width: 100%; }
.form-footer {
  text-align: center;
  margin-top: 20px;
  font-size: 14px;
  color: var(--text-secondary);
}
.form-message {
  margin-bottom: 16px;
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 14px;
  display: none;
}
.form-message.error { background: #fee2e2; color: #991b1b; display: block; }
.form-message.success { background: #d1fae5; color: #065f46; display: block; }

/* Tabs */
.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}
.auth-tab {
  flex: 1;
  padding: 14px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  font-size: 16px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
}
.auth-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}
.auth-panel { display: none; }
.auth-panel.active { display: block; }

/* About */
.about-intro {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  margin-bottom: 32px;
}
.about-intro h2 { margin-top: 0; font-size: 24px; }
.about-intro p { color: var(--text-secondary); line-height: 1.8; }
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.info-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.info-card h4 { margin: 0 0 8px; font-size: 14px; color: var(--muted); font-weight: 500; }
.info-card p { margin: 0; font-size: 15px; color: var(--text); }

/* Admin / Center tables */
.admin-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  align-items: start;
}
.admin-sidebar {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.admin-sidebar a {
  display: block;
  padding: 14px 20px;
  color: var(--text-secondary);
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}
.admin-sidebar a.active,
.admin-sidebar a:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}
.admin-main {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
th, td {
  text-align: left;
  padding: 14px 12px;
  border-bottom: 1px solid var(--border);
}
th { color: var(--text-secondary); font-weight: 600; background: var(--bg-soft); }
tr:hover td { background: var(--bg-soft); }
.status-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}
.status-pending { background: #fef3c7; color: #92400e; }
.status-approved { background: #d1fae5; color: #065f46; }
.status-rejected { background: #fee2e2; color: #991b1b; }
.action-btns { display: flex; gap: 8px; }
.action-btns .btn { padding: 5px 10px; font-size: 12px; }

/* Profile */
.profile-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 24px;
}
.profile-card h3 { margin: 0 0 16px; font-size: 18px; }
.profile-row { display: flex; margin-bottom: 12px; font-size: 14px; }
.profile-row .label { width: 100px; color: var(--muted); flex-shrink: 0; }
.profile-row .value { color: var(--text); }

/* Footer */
.site-footer {
  background: #0f3d3a;
  color: rgba(255,255,255,0.75);
  padding: 48px 0 24px;
  margin-top: auto;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 32px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.footer-intro { font-size: 14px; line-height: 1.7; margin: 0; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: rgba(255,255,255,0.75); font-size: 14px; }
.footer-links a:hover { color: #fff; }
.footer-legal {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
}
.footer-legal a { color: rgba(255,255,255,0.75); }
.footer-legal a:hover { color: #fff; }

/* Utility */
.text-center { text-align: center; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

/* Responsive */
@media (max-width: 992px) {
  .hero-inner { flex-direction: column; }
  .hero-image { width: 100%; }
  .detail-layout,
  .admin-layout { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .listing-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .header-inner { height: auto; flex-wrap: wrap; padding: 12px 16px; }
  .main-nav { order: 3; width: 100%; margin-top: 10px; overflow-x: auto; }
  .main-nav a { white-space: nowrap; }
  .category-grid,
  .listing-grid { grid-template-columns: 1fr; }
  .hero-content h1 { font-size: 28px; }
}

/* Center layout */
.center-layout { display: grid; grid-template-columns: 240px 1fr; gap: 32px; align-items: start; }
.center-sidebar { position: sticky; top: 90px; }
.side-menu {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  box-shadow: var(--shadow);
}
.side-menu a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
}
.side-menu a:hover,
.side-menu a.active {
  background: var(--primary-light);
  color: var(--primary);
}
.side-menu a svg { width: 18px; height: 18px; }
.center-main .page-title { margin-top: 0; }

/* Member card */
.member-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  margin-bottom: 32px;
}
.member-row {
  display: grid;
  grid-template-columns: 1.2fr 1.5fr 1fr;
  gap: 24px;
  align-items: center;
}
.member-info h3 { margin: 0 0 8px; font-size: 20px; }
.member-info p { margin: 4px 0; font-size: 14px; color: var(--text-secondary); }
.member-level { color: var(--primary); font-weight: 600; }
.member-quotas { display: flex; gap: 24px; }
.quota-item { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.quota-value { font-size: 28px; font-weight: 700; color: var(--primary); }
.quota-label { font-size: 13px; color: var(--text-secondary); }
.member-actions { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }

/* Section title */
.section-title { font-size: 18px; font-weight: 700; margin: 32px 0 16px; color: var(--text); }

/* Plan grid */
.plan-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 32px; }
.plan-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.plan-card h4 { margin: 0 0 8px; font-size: 16px; }
.plan-price { font-size: 28px; font-weight: 700; color: var(--primary); margin-bottom: 4px; }
.plan-unit { font-size: 14px; color: var(--text-secondary); font-weight: 500; }
.plan-desc { font-size: 13px; color: var(--text-secondary); margin: 8px 0; min-height: 38px; }
.plan-features {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}
.plan-features li { position: relative; padding-left: 16px; }
.plan-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}
.plan-action { margin-top: auto; }

/* Stat grid */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 32px; }
.stat-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
}
.stat-value { display: block; font-size: 32px; font-weight: 700; color: var(--primary); margin-bottom: 4px; }
.stat-label { font-size: 14px; color: var(--text-secondary); }
.stat-pending .stat-value { color: var(--accent); }
.stat-approved .stat-value { color: #16a34a; }
.stat-rejected .stat-value { color: #dc2626; }

/* Empty tip */
.empty-tip {
  text-align: center;
  padding: 24px;
  color: var(--muted);
  font-size: 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

@media (max-width: 992px) {
  .center-layout { grid-template-columns: 1fr; }
  .center-sidebar { position: static; margin-bottom: 20px; }
  .side-menu { flex-direction: row; overflow-x: auto; }
  .member-row { grid-template-columns: 1fr; gap: 20px; text-align: center; }
  .member-quotas { justify-content: center; }
  .member-actions { align-items: center; }
  .plan-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .plan-grid,
  .stat-grid { grid-template-columns: 1fr; }
}

/* Article card (recharge guide / privacy / terms) */
.container.narrow { max-width: 800px; }
.article-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  line-height: 1.8;
}
.article-card h2 {
  font-size: 18px;
  margin: 28px 0 12px;
  color: var(--text);
}
.article-card h2:first-child { margin-top: 0; }
.article-card p { margin: 10px 0; color: var(--text-secondary); }
.article-card ul { margin: 10px 0; padding-left: 22px; color: var(--text-secondary); }
.article-card li { margin: 6px 0; }
.article-card strong { color: var(--primary); }

/* Recharge note */
.recharge-note {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 32px;
  box-shadow: var(--shadow);
}
.recharge-note h3 { margin: 0 0 10px; font-size: 16px; }
.recharge-note p { margin: 0; color: var(--text-secondary); font-size: 14px; }

/* Quota tip */
.quota-tip {
  background: var(--primary-light);
  border: 1px solid #ccfbf1;
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 14px;
  color: var(--text-secondary);
}
.quota-num { color: var(--primary); font-weight: 700; font-size: 18px; margin: 0 4px; }
.quota-low { color: #b91c1c; font-weight: 500; }
.quota-low a { text-decoration: underline; }