/* =============================================
   头条工坊 — Toutiao Workshop（WOG AI 产品）
   使用 shared.css 统一 Design System 令牌
   ============================================= */

/* === Reset & Base === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--wog-font);
  background: var(--wog-bg);
  color: var(--wog-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
.container { max-width: var(--wog-container); margin: 0 auto; padding: 0 24px; }

/* === Announcement Bar === */
.announcement-bar {
  background: var(--wog-text);
  color: #fff;
  padding: 8px 0;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 500;
  animation: slideDown 0.4s ease-out;
}

/* === Navigation（统一：品牌 + 产品名 + 导航 + 返回 WOG AI） === */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 245, 247, .82);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  backdrop-filter: blur(20px) saturate(1.8);
  border-bottom: 1px solid var(--wog-border);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 24px;
  max-width: var(--wog-container);
  margin: 0 auto;
  height: var(--wog-nav-h);
}
.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  letter-spacing: -.01em;
  text-decoration: none;
  color: inherit;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: var(--wog-text);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}
.brand-name { font-size: 14px; font-weight: 600; letter-spacing: -.01em; }
.nav-product {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border: 1px solid var(--wog-border);
  border-radius: 999px;
  background: var(--wog-surface);
  color: var(--wog-text);
  font-size: 12.5px;
  font-weight: 600;
  white-space: nowrap;
}
.nav-product em { font-style: normal; color: var(--wog-muted); font-weight: 500; }
.nav-links { display: flex; gap: 26px; margin-left: auto; }
.nav-links a {
  color: var(--wog-text-2);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color var(--wog-dur-fast) var(--wog-ease);
}
.nav-links a:hover { color: var(--wog-text); }
.nav-back {
  flex: none;
  font-size: 13px;
  font-weight: 500;
  color: var(--wog-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--wog-dur-fast) var(--wog-ease);
}
.nav-back:hover { color: var(--wog-text); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--wog-text);
  border-radius: 2px;
  transition: transform .2s ease-out, opacity .2s ease-out;
}

/* === Hero Section === */
.hero {
  position: relative;
  background: linear-gradient(180deg, var(--wog-bg) 0%, var(--wog-surface) 55%, var(--wog-bg) 100%);
  padding: 100px 0 120px;
  text-align: center;
  overflow: hidden;
}
.hero-arc {
  position: absolute;
  bottom: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 140%;
  height: 80%;
  background: radial-gradient(ellipse at center, rgba(29, 29, 31, .045) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-content { position: relative; z-index: 1; }
.hero-badge {
  display: inline-block;
  background: var(--wog-surface-2);
  border: 1px solid var(--wog-border);
  color: var(--wog-text-2);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 20px;
  animation: fadeUp 0.6s ease-out;
}
.hero-title {
  font-size: clamp(34px, 5.4vw, 54px);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.1;
  margin-bottom: 16px;
  animation: fadeUp 0.6s ease-out 0.1s backwards;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--wog-text-2);
  line-height: 1.5;
  margin-bottom: 32px;
  animation: fadeUp 0.6s ease-out 0.2s backwards;
}
.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  animation: fadeUp 0.6s ease-out 0.3s backwards;
}
.hero-scroll {
  margin-top: 60px;
  color: #c7c7cc;
  animation: bounce 2s infinite;
}
.hero-scroll svg { width: 28px; height: 28px; }

/* === Buttons ===（按钮统一由 shared.css 提供） */

/* === Section Common === */
.section {
  padding: 80px 0;
}
.section-alt {
  background: var(--wog-surface);
}
.section-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--wog-muted);
  text-transform: uppercase;
  letter-spacing: .14em;
  margin-bottom: 8px;
  text-align: center;
}
.section-title {
  font-size: var(--wog-fs-section);
  font-weight: 700;
  text-align: center;
  margin-bottom: 44px;
  letter-spacing: -.02em;
}

/* === Features Grid === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
.feature-card {
  background: var(--wog-surface);
  border: 1px solid var(--wog-border);
  border-radius: var(--wog-radius-xl);
  padding: 28px;
  box-shadow: var(--wog-shadow-sm);
  transition: transform var(--wog-dur) var(--wog-ease), box-shadow var(--wog-dur) var(--wog-ease), border-color var(--wog-dur) var(--wog-ease);
}
.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--wog-border-strong);
  box-shadow: var(--wog-shadow-lg);
}
.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--wog-radius-md);
  background: var(--wog-bg);
  color: var(--wog-text);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}
.feature-icon svg { width: 22px; height: 22px; }
.feature-card h3 { font-size: var(--wog-fs-card); font-weight: 600; margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--wog-text-2); line-height: 1.6; }

/* === Steps === */
.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 500px;
  margin: 0 auto;
}
.step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px 0;
}
.step-number {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--wog-text);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}
.step-content h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 4px; }
.step-content p { font-size: 0.9rem; color: var(--wog-text-2); }
.step-connector {
  width: 2px;
  height: 24px;
  background: var(--wog-border-strong);
  margin-left: 21px;
}

/* === Pricing === */
.pricing-desc {
  text-align: center;
  color: var(--wog-text-2);
  font-size: 0.9rem;
  margin-bottom: 32px;
  margin-top: -32px;
}
.pricing-grid {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}
.pricing-card {
  background: var(--wog-surface);
  border: 1px solid var(--wog-border);
  border-radius: var(--wog-radius-xl);
  padding: 36px 32px;
  flex: 1;
  min-width: 260px;
  max-width: 340px;
  text-align: center;
  box-shadow: var(--wog-shadow-md);
  transition: transform var(--wog-dur) var(--wog-ease), box-shadow var(--wog-dur) var(--wog-ease), border-color var(--wog-dur) var(--wog-ease);
  position: relative;
}
.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--wog-shadow-lg);
}
.pricing-card.featured {
  border-color: var(--wog-text);
  box-shadow: 0 4px 24px rgba(29, 29, 31, .10);
}
.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--wog-text);
  color: #fff;
  padding: 4px 16px;
  border-radius: 999px;
}
.pricing-tag {
  display: inline-block;
  margin-top: 4px;
  padding: 2px 10px;
  background: var(--wog-accent-soft);
  color: var(--wog-accent);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--wog-radius-sm);
}
.pricing-label { font-size: 1rem; font-weight: 600; margin-bottom: 8px; }
.pricing-amount {
  font-size: 2.6rem;
  font-weight: 700;
  letter-spacing: -.03em;
  margin-bottom: 4px;
}
.pricing-currency {
  font-size: 1.4rem;
  vertical-align: super;
  font-weight: 600;
}
.pricing-period { font-size: 0.85rem; color: var(--wog-text-2); margin-bottom: 20px; }
.pricing-features { list-style: none; text-align: left; margin-bottom: 24px; }
.pricing-features li {
  position: relative;
  padding: 8px 0 8px 26px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--wog-border);
}
.pricing-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 8px;
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--wog-success-bg);
  color: var(--wog-success);
  font-size: 10px;
  font-weight: 700;
}
.pricing-features li.na { color: var(--wog-muted); }
.pricing-features li.na::before {
  content: '×';
  background: var(--wog-bg);
  color: var(--wog-muted);
}

/* === FAQ === */
.faq-list {
  max-width: 600px;
  margin: 0 auto;
}
.faq-item {
  background: var(--wog-surface);
  border: 1px solid var(--wog-border);
  border-radius: var(--wog-radius-lg);
  margin-bottom: 8px;
  overflow: hidden;
}
.faq-question {
  padding: 18px 20px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  transition: background var(--wog-dur-fast) var(--wog-ease);
}
.faq-question:hover { background: var(--wog-surface-2); }
.faq-arrow {
  font-size: 1.4rem;
  transition: transform .3s ease;
  color: var(--wog-muted);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 20px;
  font-size: 0.88rem;
  color: var(--wog-text-2);
  line-height: 1.6;
  transition: all .3s ease;
}

/* === Footer === */
.footer {
  text-align: center;
  padding: 44px 0;
  font-size: 0.85rem;
  color: var(--wog-text-2);
  border-top: 1px solid var(--wog-border);
}
.footer-meta { margin-top: 4px; font-size: 0.8rem; color: var(--wog-muted); }

/* === Modal === */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--wog-overlay);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  animation: fadeIn var(--wog-dur) var(--wog-ease);
}
.modal {
  background: var(--wog-surface);
  border: 1px solid var(--wog-border);
  border-radius: var(--wog-radius-xl);
  padding: 36px;
  max-width: 420px;
  width: 90%;
  position: relative;
  animation: scaleIn var(--wog-dur) var(--wog-ease);
  box-shadow: var(--wog-shadow-modal);
  max-height: 90vh;
  overflow-y: auto;
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--wog-muted);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--wog-dur-fast) var(--wog-ease);
}
.modal-close:hover { background: var(--wog-bg); }
.modal-header { text-align: center; margin-bottom: 24px; }
.modal-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--wog-bg);
  border-radius: var(--wog-radius-md);
  color: var(--wog-text);
}
.modal-icon svg { width: 24px; height: 24px; }
.modal-header h3 { font-size: 1.2rem; font-weight: 600; }
.modal-price { font-size: 1.8rem; font-weight: 700; color: var(--wog-text); margin-top: 4px; }
.modal-body { text-align: center; }
.order-id-display { margin-bottom: 24px; }
.order-id-display label { font-size: 0.8rem; color: var(--wog-text-2); display: block; margin-bottom: 6px; }
.order-id-box {
  background: var(--wog-bg);
  padding: 12px 16px;
  border-radius: var(--wog-radius-md);
  font-family: "SF Mono", ui-monospace, monospace;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 1px;
  user-select: all;
}
.payment-info { margin-top: 8px; }
.payment-hint { font-size: 0.85rem; color: var(--wog-text-2); margin-bottom: 16px; }
.payment-qr {
  background: var(--wog-bg);
  border-radius: var(--wog-radius-lg);
  padding: 24px;
  margin-bottom: 16px;
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.qr-placeholder p { color: var(--wog-muted); font-size: 0.9rem; }

/* 收款码切换 Tab */
.pay-tabs { display: flex; gap: 8px; margin-bottom: 12px; }
.pay-tab {
  flex: 1; padding: 8px 0; border: 1px solid var(--wog-border-strong); border-radius: 10px;
  background: var(--wog-surface); font-size: 0.85rem; color: var(--wog-text-2); cursor: pointer;
  font-family: inherit; transition: all var(--wog-dur-fast) var(--wog-ease);
}
.pay-tab.active { border-color: var(--wog-text); color: var(--wog-text); background: var(--wog-surface-2); }
.qr-img { display: none; width: 200px; height: 200px; object-fit: contain; border-radius: var(--wog-radius-md); }
.qr-img.show { display: block; }

.payment-note { font-size: 0.8rem; color: var(--wog-muted); line-height: 1.5; }
.payment-note a { color: var(--wog-accent); text-decoration: none; font-weight: 500; }

/* === Animations === */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }
@keyframes slideDown { from { opacity: 0; transform: translateY(-100%); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* === Intersection Observer === */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
  transition-delay: var(--delay, 0s);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Responsive === */
@media (max-width: 899px) {
  .nav-links {
    position: fixed;
    top: var(--wog-nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(245, 245, 247, .96);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--wog-border);
    padding: 8px 0;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--wog-dur) var(--wog-ease), transform var(--wog-dur) var(--wog-ease);
  }
  .nav-links a {
    padding: 14px 24px;
    font-size: 16px;
    color: var(--wog-text);
  }
  body.menu-open .nav-links {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
  .nav-toggle { display: flex; }
  .nav-product { display: none; }
}
@media (max-width: 640px) {
  .hero-title { font-size: 2.2rem; }
  .hero { padding: 60px 0 80px; }
  .features-grid { grid-template-columns: 1fr; }
  .pricing-grid { flex-direction: column; align-items: center; }
  .pricing-card { min-width: auto; width: 100%; }
  .section { padding: 48px 0; }
  .section-title { font-size: 1.5rem; margin-bottom: 32px; }
  .nav-back { font-size: 12px; }
  .nav-inner { gap: 10px; padding: 0 16px; }
}

/* === Page-specific: Activate, Bug, Admin === */
.page-mini-hero {
  background: linear-gradient(180deg, var(--wog-bg), var(--wog-surface));
  padding: 60px 0 40px;
  text-align: center;
}
.page-mini-hero h1 { font-size: var(--wog-fs-page); font-weight: 700; letter-spacing: -.02em; margin-bottom: 8px; }
.page-mini-hero p { color: var(--wog-text-2); font-size: 0.95rem; }

.form-card {
  background: var(--wog-surface);
  border: 1px solid var(--wog-border);
  border-radius: var(--wog-radius-xl);
  padding: 32px;
  max-width: 480px;
  margin: -20px auto 40px;
  box-shadow: var(--wog-shadow-md);
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--wog-text);
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--wog-border-strong);
  border-radius: var(--wog-radius-md);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--wog-dur-fast) var(--wog-ease), box-shadow var(--wog-dur-fast) var(--wog-ease);
  background: var(--wog-surface);
  color: var(--wog-text);
  outline: none;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--wog-accent);
  background: var(--wog-surface);
  box-shadow: var(--wog-focus-ring);
}
.form-group textarea { min-height: 100px; resize: vertical; }
.form-hint { font-size: 0.78rem; color: var(--wog-muted); margin-top: 4px; }

.result-card {
  background: var(--wog-bg);
  border-radius: var(--wog-radius-lg);
  padding: 24px;
  margin-top: 20px;
  text-align: center;
}
.result-card.success { background: var(--wog-success-bg); }
.result-card.error { background: var(--wog-error-bg); }
.result-code {
  font-family: "SF Mono", ui-monospace, monospace;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--wog-text);
  word-break: break-all;
  user-select: all;
  padding: 12px;
  background: var(--wog-surface);
  border-radius: var(--wog-radius-md);
  margin: 8px 0;
  cursor: copy;
}

.alert {
  padding: 12px 16px;
  border-radius: var(--wog-radius-md);
  font-size: 0.9rem;
  margin-bottom: 16px;
}
.alert-success { background: var(--wog-success-bg); color: var(--wog-success); }
.alert-error { background: var(--wog-error-bg); color: var(--wog-error); }
.alert-info { background: var(--wog-info-bg); color: var(--wog-info); }
.alert-warning { background: var(--wog-warning-bg); color: var(--wog-warning); }

/* === Admin === */
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar {
  width: 220px;
  background: #1d1d1f;
  color: #fff;
  padding: 24px 0;
  flex-shrink: 0;
}
.admin-sidebar .admin-sidebar-brand { display: flex; align-items: center; gap: 8px; padding: 0 20px; margin-bottom: 24px; font-size: 15px; font-weight: 700; color: #fff; }
.admin-sidebar nav a {
  display: block;
  padding: 10px 20px;
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.admin-sidebar nav a:hover, .admin-sidebar nav a.active {
  color: #fff;
  background: rgba(255,255,255,0.08);
}
.admin-main { flex: 1; padding: 32px; background: var(--wog-bg); }
.admin-main h1 { font-size: 1.5rem; font-weight: 700; margin-bottom: 24px; }
.admin-sidebar .admin-sidebar-brand .brand-mark { margin: 0; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 32px;
}
.stat-card {
  background: var(--wog-surface);
  border: 1px solid var(--wog-border);
  border-radius: var(--wog-radius-lg);
  padding: 20px;
  text-align: center;
  box-shadow: var(--wog-shadow-sm);
}
.stat-card .stat-value { font-size: 1.8rem; font-weight: 700; }
.stat-card .stat-label { font-size: 0.8rem; color: var(--wog-text-2); margin-top: 4px; }

.admin-table {
  width: 100%;
  background: var(--wog-surface);
  border: 1px solid var(--wog-border);
  border-radius: var(--wog-radius-lg);
  overflow: hidden;
  box-shadow: var(--wog-shadow-sm);
}
.admin-table th, .admin-table td {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.85rem;
  border-bottom: 1px solid var(--wog-border);
}
.admin-table th { background: var(--wog-surface-2); font-weight: 600; color: var(--wog-text-2); }
.admin-table tr:hover { background: var(--wog-surface-2); }

.admin-search {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}
.admin-search input {
  flex: 1;
  padding: 10px 16px;
  border: 1px solid var(--wog-border-strong);
  border-radius: var(--wog-radius-md);
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
}
.admin-search input:focus { border-color: var(--wog-accent); box-shadow: var(--wog-focus-ring); }

.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-pending { background: var(--wog-warning-bg); color: var(--wog-warning); }
.badge-paid { background: var(--wog-success-bg); color: var(--wog-success); }
.badge-activated { background: var(--wog-info-bg); color: var(--wog-info); }

.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--wog-bg);
}
.login-card {
  background: var(--wog-surface);
  border: 1px solid var(--wog-border);
  border-radius: var(--wog-radius-xl);
  padding: 40px;
  max-width: 380px;
  width: 90%;
  box-shadow: var(--wog-shadow-md);
  text-align: center;
}
.login-card h1 { font-size: 1.3rem; margin-bottom: 24px; }

/* === Toggle Switch === */
.toggle-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}
.toggle {
  width: 44px;
  height: 24px;
  background: #e5e5ea;
  border-radius: 12px;
  cursor: pointer;
  position: relative;
  transition: background 0.2s;
}
.toggle.active { background: var(--wog-accent); }
.toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.toggle.active::after { transform: translateX(20px); }

/* === Loading === */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--wog-border-strong);
  border-top-color: var(--wog-text-2);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
/* 下载区域 */
.download-area { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--wog-border); text-align: center; }
.download-hint { font-size: 0.85rem; color: var(--wog-text-2); margin-bottom: 12px; }
.download-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 32px; background: var(--wog-text); color: #fff;
  border-radius: var(--wog-radius-md); text-decoration: none; font-weight: 600; font-size: 0.95rem;
  transition: background var(--wog-dur-fast) var(--wog-ease), transform var(--wog-dur) var(--wog-ease), box-shadow var(--wog-dur) var(--wog-ease);
}
.download-btn:hover { background: #2C2C2E; transform: translateY(-1px); box-shadow: 0 6px 16px rgba(29, 29, 31, .18); }
.download-btn svg { width: 16px; height: 16px; }

/* 下载选择弹窗 */
.download-modal-content { max-width: 420px; }
.download-tip { font-size: 0.9rem; color: var(--wog-text-2); margin-bottom: 16px; text-align: center; }
.download-options { display: flex; flex-direction: column; gap: 12px; }
.download-option {
  display: flex; align-items: center; gap: 14px; padding: 16px;
  background: var(--wog-bg); border-radius: var(--wog-radius-lg); text-decoration: none; color: var(--wog-text);
  border: 1px solid transparent; transition: all var(--wog-dur) var(--wog-ease);
}
.download-option:hover { border-color: var(--wog-text-2); background: var(--wog-surface); }
.dl-icon {
  width: 40px; height: 40px; border-radius: 10px; background: var(--wog-surface);
  display: flex; align-items: center; justify-content: center; color: var(--wog-text);
}
.dl-icon svg { width: 22px; height: 22px; }
.dl-info { flex: 1; }
.dl-name { font-weight: 600; font-size: 1rem; }
.dl-sub { font-size: 0.8rem; color: var(--wog-text-2); }
.download-note { font-size: 0.78rem; color: var(--wog-muted); text-align: center; margin-top: 16px; line-height: 1.5; }

/* 阶段 4.2 — 未登录提示条 */
.auth-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 10px 16px;
  background: #E8F1FF;
  color: #0A60C9;
  font-size: 13.5px;
}

.auth-banner-btn {
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  color: #0A60C9;
  border: 1px solid #B8D5F5;
  transition: background var(--wog-dur-fast, .15s) ease-out;
}

.auth-banner-btn:hover { background: #DCEBFF; }

.auth-banner-btn-dark {
  background: #1D1D1F;
  border-color: #1D1D1F;
  color: #fff;
}

.auth-banner-btn-dark:hover { background: #3A3A3C; }