/* =========================================================
   app.css — 合并 home.css（应用外壳：页眉 / 页脚 / Hero / 容器等）
   与功能页样式（登录 / 注册 / 账户 / 仪表盘 / 聊天容器壳）。
   设计语言统一为 teal（#009688 / #00796B）。
   ========================================================= */

:root {
  --gg-primary: #009688;
  --gg-primary-dark: #00796B;
  --gg-primary-light: #B2DFDB;
  --gg-primary-soft: #E0F2F1;
  --gg-bg: #FFFFFF;
  --gg-bg-alt: #F7F9FA;
  --gg-text: #0F1419;
  --gg-text-secondary: #5A6B73;
  --gg-text-muted: #8A989F;
  --gg-border: #EAEDEF;
  --gg-border-strong: #DFE4E7;
  --gg-surface: #FFFFFF;
  --gg-text-light: #7F8C8D;
  --gg-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --gg-shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
  --header-height: 60px;
  --max-width: 1120px;
  --radius: 10px;
  --shadow-sm: 0 1px 2px rgba(15, 20, 25, 0.04);
  --shadow-md: 0 4px 16px rgba(15, 20, 25, 0.06);
  --shadow-lg: 0 16px 48px rgba(15, 20, 25, 0.10);
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'SF Mono', 'JetBrains Mono', 'Fira Code', Consolas, Monaco, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--gg-bg);
  color: var(--gg-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }

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

/* ============ Header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--gg-border);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.3px;
  color: var(--gg-text);
}

.brand img {
  width: 30px;
  height: 30px;
  border-radius: 7px;
}

.brand .brand-sub {
  font-weight: 400;
  font-size: 13px;
  color: var(--gg-text-muted);
  padding-left: 10px;
  margin-left: 2px;
  border-left: 1px solid var(--gg-border-strong);
}

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav a {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--gg-text-secondary);
  transition: color 0.18s ease;
}

.nav a:hover { color: var(--gg-primary); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  font-family: inherit;
  font-size: 14.5px;
  font-weight: 600;
  border-radius: var(--radius);
  padding: 9px 18px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.18s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gg-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--gg-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0, 150, 136, 0.28);
}

.btn-ghost {
  background: transparent;
  color: var(--gg-text);
  border-color: var(--gg-border-strong);
}
.btn-ghost:hover {
  border-color: var(--gg-primary);
  color: var(--gg-primary);
}

.btn-secondary {
  background: #fff;
  color: var(--gg-primary);
  border-color: var(--gg-border-strong);
}
.btn-secondary:hover {
  border-color: var(--gg-primary);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0, 150, 136, 0.15);
}

.btn-lg { padding: 12px 26px; font-size: 15.5px; }

.btn svg { width: 16px; height: 16px; fill: currentColor; }

/* ============ Hero ============ */
.hero {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--gg-border);
  background:
    radial-gradient(900px 380px at 88% -10%, var(--gg-primary-soft) 0%, transparent 60%),
    var(--gg-bg);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gg-primary-dark);
  background: var(--gg-primary-soft);
  border: 1px solid var(--gg-primary-light);
  padding: 5px 13px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero-badge .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--gg-primary);
}

.hero h1 {
  font-size: 46px;
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -1.2px;
  color: var(--gg-text);
  margin-bottom: 18px;
}

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

.hero p.lead {
  font-size: 17.5px;
  line-height: 1.65;
  color: var(--gg-text-secondary);
  max-width: 480px;
  margin-bottom: 30px;
}

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* terminal card */
.terminal {
  background: #0F1419;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  font-family: var(--font-mono);
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 14px;
  background: #161C22;
  border-bottom: 1px solid #232B33;
}
.terminal-bar .tdot {
  width: 11px; height: 11px; border-radius: 50%;
  background: #2C3742;
}
.terminal-bar .tdot.r { background: #FF5F57; }
.terminal-bar .tdot.y { background: #FEBC2E; }
.terminal-bar .tdot.g { background: #28C840; }
.terminal-bar .ttitle {
  margin-left: 8px;
  font-size: 12px;
  color: #6B7785;
  font-family: var(--font-sans);
}
.terminal-body {
  padding: 18px 18px 20px;
  font-size: 13.5px;
  line-height: 1.85;
  color: #C9D4DD;
}
.terminal-body .prompt { color: var(--gg-primary); }
.terminal-body .cmd { color: #E7EDF2; }
.terminal-body .out { color: #7C8B96; }
.terminal-body .ok { color: #3DDC97; }

/* ============ Section ============ */
.section { padding: 40px 0; }
.section.alt { background: var(--gg-bg-alt); border-top: 1px solid var(--gg-border); border-bottom: 1px solid var(--gg-border); }

.section-head { text-align: center; max-width: 640px; margin: 0 auto 44px; }
.section-head h2 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.6px;
  margin-bottom: 12px;
}
.section-head p { color: var(--gg-text-secondary); font-size: 16px; }

/* feature grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature-card {
  background: var(--gg-bg);
  border: 1px solid var(--gg-border);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: all 0.2s ease;
}
.feature-card:hover {
  border-color: var(--gg-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.feature-icon {
  width: 42px; height: 42px;
  border-radius: 10px;
  background: var(--gg-primary-soft);
  color: var(--gg-primary-dark);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.feature-icon svg { width: 22px; height: 22px; fill: currentColor; }
.feature-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 14.5px; color: var(--gg-text-secondary); line-height: 1.6; }

/* steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.step {
  position: relative;
  padding: 26px 24px;
  background: var(--gg-bg);
  border: 1px solid var(--gg-border);
  border-radius: var(--radius);
}
.step .num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--gg-primary);
  background: var(--gg-primary-soft);
  border-radius: 6px;
  padding: 3px 9px;
  display: inline-block;
  margin-bottom: 14px;
}
.step h3 { font-size: 16.5px; font-weight: 700; margin-bottom: 7px; }
.step p { font-size: 14px; color: var(--gg-text-secondary); line-height: 1.6; }

/* CTA banner */
.cta-banner {
  text-align: center;
  background: linear-gradient(120deg, var(--gg-primary) 0%, var(--gg-primary-dark) 100%);
  border-radius: 16px;
  padding: 52px 32px;
  color: #fff;
}
.cta-banner h2 { font-size: 28px; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 12px; }
.cta-banner p { font-size: 16px; color: rgba(255,255,255,0.88); margin-bottom: 26px; }
.cta-banner .btn-ghost { background: rgba(255,255,255,0.12); color: #fff; border-color: rgba(255,255,255,0.35); }
.cta-banner .btn-ghost:hover { background: rgba(255,255,255,0.22); color: #fff; }
.cta-banner .btn-light { background: #fff; color: var(--gg-primary-dark); }
.cta-banner .btn-light:hover { transform: translateY(-1px); box-shadow: 0 8px 22px rgba(0,0,0,0.18); }

/* ============ Footer ============ */
.site-footer {
  border-top: 1px solid var(--gg-border);
  padding: 48px 0 28px;
  background: var(--gg-bg-alt);
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-bottom: 36px;
}
.footer-col--wechat {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.footer-col--wechat img {
  border-radius: 8px;
  margin-bottom: 10px;
}
.footer-col--wechat p {
  font-size: 12px;
  color: var(--gg-text-secondary);
  line-height: 1.5;
  margin: 0;
  max-width: 160px;
}
.footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--gg-text);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  margin-bottom: 14px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--gg-text-secondary);
  padding: 5px 0;
  transition: color 0.15s ease;
}
.footer-col a:hover { color: var(--gg-primary); }
.footer-bottom {
  border-top: 1px solid var(--gg-border);
  padding-top: 20px;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--gg-text-muted);
}

/* language switch */
.lang-switch {
  position: relative;
}
.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  color: var(--gg-text-secondary);
  background: var(--gg-bg);
  border: 1px solid var(--gg-border-strong);
  border-radius: var(--radius);
  padding: 8px 12px;
  cursor: pointer;
  transition: all 0.18s ease;
}
.lang-btn:hover { border-color: var(--gg-primary); color: var(--gg-primary); }
.lang-btn svg { width: 15px; height: 15px; fill: currentColor; }
.lang-btn .caret { width: 12px; height: 12px; transition: transform 0.2s ease; }
.lang-switch.open .lang-btn .caret { transform: rotate(180deg); }
.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 132px;
  background: var(--gg-bg);
  border: 1px solid var(--gg-border-strong);
  border-radius: 10px;
  box-shadow: var(--shadow-md);
  padding: 6px;
  display: none;
  z-index: 200;
}
.lang-switch.open .lang-menu { display: block; }
/* open upward (used in footer) so page height never shifts */
.lang-switch.up .lang-menu {
  top: auto;
  bottom: calc(100% + 8px);
}
.lang-switch.up .lang-btn .caret { transform: rotate(180deg); }
.lang-switch.up.open .lang-btn .caret { transform: rotate(0deg); }
.lang-menu button,
.lang-menu a {
  display: flex;
  width: 100%;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  font-size: 14px;
  color: var(--gg-text-secondary);
  background: none;
  border: none;
  border-radius: 7px;
  padding: 9px 10px;
  cursor: pointer;
  text-align: left;
  text-decoration: none;
  box-sizing: border-box;
  transition: background 0.15s ease;
}
.lang-menu button:hover,
.lang-menu a:hover { background: var(--gg-bg-alt); color: var(--gg-text); }
.lang-menu button.active,
.lang-menu a.active { color: var(--gg-primary); font-weight: 600; }
.lang-menu button .check,
.lang-menu a .check { width: 15px; height: 15px; fill: var(--gg-primary); margin-left: auto; opacity: 0; }
.lang-menu button.active .check,
.lang-menu a.active .check { opacity: 1; }

/* user chip (logged in) */
.user-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  font-weight: 600;
  color: var(--gg-text);
  background: var(--gg-bg);
  border: 1px solid var(--gg-border-strong);
  border-radius: 999px;
  padding: 5px 14px 5px 6px;
  cursor: pointer;
  transition: all 0.18s ease;
}
.user-chip:hover { border-color: var(--gg-primary); }
.user-chip .avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--gg-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
}

/* mobile menu toggle */
.menu-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--gg-border-strong);
  border-radius: 8px;
  background: var(--gg-bg);
  cursor: pointer;
  align-items: center; justify-content: center;
}
.menu-toggle svg { width: 20px; height: 20px; fill: var(--gg-text); }

/* ============ Responsive ============ */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero { padding: 52px 0 48px; }
  .hero h1 { font-size: 38px; }
  .feature-grid, .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
}

@media (max-width: 640px) {
  .container { padding: 0 18px; }
  .nav { display: none; }
  .header-actions .btn-ghost { display: none; }
  .header-actions .lang-switch { display: none; }
  .menu-toggle { display: flex; }

  .hero { padding: 32px 0 28px; }
  .hero h1 { font-size: 30px; letter-spacing: -0.8px; }
  .hero p.lead { font-size: 16px; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }

  .section { padding: 28px 0; }
  .section-head { margin-bottom: 30px; }
  .section-head h2 { font-size: 24px; }
  .feature-grid, .steps { grid-template-columns: 1fr; }
  .cta-banner { padding: 38px 22px; }
  .cta-banner h2 { font-size: 23px; }
  .cta-banner .hero-cta { flex-direction: column; }
  .cta-banner .btn { width: 100%; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .tag-cards { grid-template-columns: 1fr; }
}

/* ==================== Case Book 详情页（_doc/case_book.md） ==================== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--gg-text-light);
  margin-bottom: 22px;
}
.breadcrumb .sep { color: var(--gg-border); }
.breadcrumb a { color: var(--gg-primary-dark); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .current { color: var(--gg-text); font-weight: 600; }

.item-header {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  margin-bottom: 36px;
}
.item-cover {
  width: 200px;
  height: 150px;
  object-fit: cover;
  border-radius: 12px;
  flex-shrink: 0;
  background: var(--gg-bg-alt);
}
.item-head-text { flex: 1; min-width: 0; }
.item-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--gg-text);
  letter-spacing: -0.5px;
  line-height: 1.25;
}
.item-lead {
  margin-top: 12px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--gg-text-secondary);
}
.item-meta {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 14px;
}
.item-meta-item { color: var(--gg-text-light); }
.item-meta-item[href] { color: var(--gg-primary-dark); text-decoration: none; font-weight: 600; }
.item-meta-item[href]:hover { text-decoration: underline; }

.book-materials {
  list-style: none;
  counter-reset: bm;
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}
.book-material {
  counter-increment: bm;
}
.book-material-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  background: var(--gg-surface);
  border: 1px solid var(--gg-border);
  border-radius: 12px;
  text-decoration: none;
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}
.book-material-link:hover {
  border-color: var(--gg-primary-light);
  box-shadow: var(--gg-shadow);
  transform: translateY(-2px);
}
.book-material-link::before {
  content: counter(bm);
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gg-primary-soft);
  color: var(--gg-primary-dark);
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.book-material-thumb {
  width: 56px;
  height: 42px;
  object-fit: cover;
  border-radius: 6px;
  flex-shrink: 0;
  background: var(--gg-bg-alt);
}
.book-material-title {
  flex: 1;
  min-width: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--gg-text);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.book-material-author {
  font-size: 12px;
  color: var(--gg-text-light);
  flex-shrink: 0;
}
.empty-hint {
  margin-top: 16px;
  color: var(--gg-text-light);
  font-size: 15px;
}

@media (max-width: 768px) {
  .item-header { flex-direction: column; }
  .item-cover { width: 100%; height: 180px; }
}

/* mobile dropdown nav */
.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 14px 18px 18px;
  border-bottom: 1px solid var(--gg-border);
  background: var(--gg-bg);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--gg-text-secondary);
  padding: 10px 4px;
  border-bottom: 1px solid var(--gg-border);
}
.mobile-nav a:last-child { border-bottom: none; }

/* =========================================================
   app.css — 功能页样式（登录 / 注册 / 账户 / 聊天）
   以 home.css 设计语言为基准，独立于 landing.css
   ========================================================= */



/* ============ 通用按钮（与 home.css 保持一致） ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  font-family: inherit;
  font-size: 14.5px;
  font-weight: 600;
  border-radius: var(--radius);
  padding: 9px 18px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.18s ease;
  white-space: nowrap;
  text-decoration: none;
}
.btn-primary { background: var(--gg-primary); color: #fff; }
.btn-primary:hover {
  background: var(--gg-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0, 150, 136, 0.28);
}
/* 禁用态（如「已签到/Checked」）：统一灰色、不可点、无悬浮效果 */
.btn:disabled,
.btn-primary:disabled,
.btn-secondary:disabled,
.btn-ghost:disabled {
  background: #c2c8d0;
  color: #fff;
  border-color: #c2c8d0;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
  opacity: 1;
}
.btn-primary:disabled:hover,
.btn-secondary:disabled:hover {
  background: #c2c8d0;
  transform: none;
  box-shadow: none;
}
.btn-ghost {
  background: transparent;
  color: var(--gg-text);
  border-color: var(--gg-border-strong);
}
.btn-ghost:hover { border-color: var(--gg-primary); color: var(--gg-primary); }
.btn-secondary {
  background: #fff;
  color: var(--gg-primary);
  border-color: var(--gg-border-strong);
}
.btn-secondary:hover {
  border-color: var(--gg-primary);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0, 150, 136, 0.15);
}
.btn-lg { padding: 12px 26px; font-size: 15.5px; }

/* ============ 用户反馈（大方 / account 风格）============ */
.feedback-page {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 56px 20px 72px;
  background:
    radial-gradient(800px 360px at 50% -10%, var(--gg-primary-soft) 0%, transparent 60%),
    var(--gg-bg);
  min-height: 70vh;
}
.feedback-card {
  width: 100%;
  max-width: 680px;
  background: #fff;
  border: 1px solid var(--gg-border);
  border-radius: 16px;
  padding: 32px 36px 36px;
  box-shadow: 0 14px 36px rgba(15, 40, 60, 0.08);
}
.feedback-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--gg-border);
  margin-bottom: 16px;
}
.feedback-avatar {
  flex: 0 0 52px;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--gg-primary-soft);
  color: var(--gg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  overflow: hidden;
  line-height: 1;
}
.feedback-avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.feedback-header-text { min-width: 0; flex: 1; }
.feedback-header-text h1 {
  margin: 0;
  font-size: 21px;
  font-weight: 700;
  color: var(--gg-text);
  line-height: 1.25;
}
.feedback-greeting {
  margin: 2px 0 0;
  font-size: 13px;
  color: var(--gg-text-muted);
}
.feedback-intro {
  margin: 0 0 22px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gg-text-muted);
}
.feedback-form .auth-form-group { margin-bottom: 18px; }
.feedback-form .auth-form-group label {
  display: block;
  margin-bottom: 7px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--gg-text);
}
.feedback-form .auth-input {
  width: 100%;
  padding: 11px 13px;
  font-size: 14.5px;
  border: 1px solid var(--gg-border);
  border-radius: 10px;
  background: #fcfdfe;
  transition: border-color .15s, box-shadow .15s;
  box-sizing: border-box;
}
.feedback-form .auth-input:focus {
  border-color: var(--gg-primary);
  box-shadow: 0 0 0 3px var(--gg-primary-soft);
  background: #fff;
  outline: none;
}
.feedback-textarea { resize: vertical; min-height: 140px; line-height: 1.6; }
.feedback-counter {
  display: block;
  margin-top: 6px;
  text-align: right;
  font-size: 12px;
  color: var(--gg-text-muted);
}
.feedback-submit {
  width: 100%;
  margin-top: 6px;
  padding: 12px;
  font-size: 15px;
  font-weight: 600;
}
.feedback-msg {
  margin: 14px 0 0;
  padding: 11px 14px;
  border-radius: 9px;
  font-size: 13.5px;
  text-align: center;
}
.feedback-msg.ok { background: #e7f7ee; color: #1b7f4b; }
.feedback-msg.err { background: #fdecec; color: #c0392b; }

@media (max-width: 640px) {
  .feedback-page { padding: 24px 12px 40px; }
  .feedback-card { padding: 24px 20px 28px; border-radius: 14px; }
  .feedback-header-text h1 { font-size: 19px; }
}

/* ============ 登录 / 注册 ============ */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 20px;
  background:
    radial-gradient(700px 320px at 50% -10%, var(--gg-primary-soft) 0%, transparent 60%),
    var(--gg-bg);
}
.auth-container {
  width: 100%;
  max-width: 400px;
  background: var(--gg-bg);
  border: 1px solid var(--gg-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 28px 28px 24px;
}
.auth-header { text-align: center; margin-bottom: 18px; }
.auth-header h2 {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.4px;
  color: var(--gg-text);
  margin-bottom: 6px;
}
.auth-header p {
  font-size: 14px;
  color: var(--gg-text-secondary);
}

.auth-form-group { margin-bottom: 13px; }
.auth-form-group label {
  display: block;
  margin-bottom: 5px;
  font-size: 13px;
  font-weight: 500;
  color: var(--gg-text-secondary);
}
.auth-form-group input,
.auth-form-group textarea,
.auth-form-group select {
  width: 100%;
  padding: 10px 13px;
  font-family: inherit;
  font-size: 15px;
  color: var(--gg-text);
  background: var(--gg-bg-alt);
  border: 1px solid var(--gg-border);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  resize: vertical;
}
.auth-form-group input:focus,
.auth-form-group textarea:focus,
.auth-form-group select:focus {
  outline: none;
  background: var(--gg-bg);
  border-color: var(--gg-primary);
  box-shadow: 0 0 0 3px rgba(0, 150, 136, 0.12);
}
.auth-form-group input[readonly] {
  background: #F0F2F3;
  color: var(--gg-text-muted);
  cursor: not-allowed;
}

.auth-btn {
  width: 100%;
  padding: 11px;
  border: none;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.18s ease;
  color: #fff;
  background: var(--gg-primary);
  margin-top: 4px;
}
.auth-btn:hover {
  background: var(--gg-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0, 150, 136, 0.28);
}
.auth-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}
.auth-btn-secondary {
  background: #fff;
  color: var(--gg-text);
  border: 1px solid var(--gg-border-strong);
}
.auth-btn-secondary:hover {
  border-color: var(--gg-primary);
  color: var(--gg-primary);
  box-shadow: none;
}

.auth-error-message,
.auth-success-message {
  font-size: 13.5px;
  padding: 9px 13px;
  border-radius: var(--radius);
  margin-bottom: 12px;
  text-align: center;
}
.auth-error-message {
  color: #C0392B;
  background: #FDECEA;
  border: 1px solid #F5C6C0;
}
.auth-success-message {
  color: #1E8449;
  background: #E9F7EF;
  border: 1px solid #B7E4C7;
}

.auth-link-text {
  text-align: center;
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--gg-text-secondary);
}
.auth-link-text a {
  color: var(--gg-primary);
  font-weight: 600;
  text-decoration: none;
}
.auth-link-text a:hover { text-decoration: underline; }

/* ============ 账户（个人设置） ============ */
.account-page {
  min-height: calc(100vh - var(--header-height));
  padding: 40px 24px;
}
.account-container {
  max-width: 640px;
  margin: 0 auto;
  background: var(--gg-bg);
  border: 1px solid var(--gg-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 36px;
}
.account-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}
.account-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gg-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  object-fit: cover;
  flex-shrink: 0;
}
.account-title {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.4px;
  color: var(--gg-text);
}
.account-title small {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--gg-text-muted);
  margin-top: 2px;
}

.account-section {
  padding: 22px 0;
  border-top: 1px solid var(--gg-border);
}
.account-section:first-of-type { border-top: none; padding-top: 0; }
.section-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--gg-text-muted);
  margin-bottom: 16px;
}
.account-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}
.account-actions .auth-btn { flex: 1; }

/* ============ 聊天页容器壳 ============
   注：聊天区内部（侧边栏、消息、GeoGebra 画板、弹窗等）的样式
   由 chat.css 提供，此处仅定义套在统一页眉下的整体布局。 */
.chat-app {
  height: calc(100vh - var(--header-height));
  display: flex;
  overflow: hidden;
  background: var(--gg-bg);
}
@media (max-width: 768px) {
  .chat-app {
    position: relative;
    height: calc(100vh - var(--header-height));
  }
}

/* ============ 响应式 ============ */
@media (max-width: 768px) {
  .account-container { padding: 26px 20px; }
  .auth-container { padding: 32px 24px; }
}

/* ============ 个人中心（Dashboard） ============ */
.dashboard {
  display: flex;
  gap: 24px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 28px 24px 48px;
  align-items: flex-start;
}
.dashboard-sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--gg-bg);
  border: 1px solid var(--gg-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 18px 14px;
  position: sticky;
  top: calc(var(--header-height) + 16px);
}
.dashboard-user {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 6px 16px;
  border-bottom: 1px solid var(--gg-border);
  margin-bottom: 12px;
}
.dashboard-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gg-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 700;
  object-fit: cover;
  flex-shrink: 0;
}
.dashboard-username {
  font-size: 15px;
  font-weight: 700;
  color: var(--gg-text);
}
.dashboard-user-meta small {
  font-size: 12px;
  color: var(--gg-text-muted);
}
.dashboard-nav { display: flex; flex-direction: column; gap: 4px; }
.dash-nav-item {
  padding: 10px 12px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  color: var(--gg-text-secondary);
  text-decoration: none;
  transition: all 0.15s ease;
}
.dash-nav-item:hover { background: var(--gg-bg-alt); color: var(--gg-text); }
.dash-nav-item.active {
  background: var(--gg-primary-soft);
  color: var(--gg-primary-dark);
}

.dashboard-content {
  flex: 1;
  min-width: 0;
  background: var(--gg-bg);
  border: 1px solid var(--gg-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 28px;
}
.dashboard-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--gg-border);
}
.dashboard-credits {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 14px;
  color: var(--gg-text-secondary);
}
.dashboard-credits .dc-value {
  font-size: 26px;
  font-weight: 800;
  color: var(--gg-primary-dark);
  line-height: 1;
}
.dashboard-credits .dc-streak { font-size: 13px; color: var(--gg-text-muted); }
.dashboard-credits .dc-streak b { color: var(--gg-text); }

.dash-desc { font-size: 14px; color: var(--gg-text-secondary); margin: 0 0 18px; }

/* 积分获取页：签到小组件 */
.checkin-widget {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  margin: 0 0 22px;
  padding: 16px 20px;
  background: var(--gg-bg-soft, #f7f8fa);
  border: 1px solid var(--gg-border);
  border-radius: 12px;
}
.checkin-stat { display: flex; flex-direction: column; gap: 4px; }
.checkin-stat .cs-label { font-size: 12px; color: var(--gg-text-muted); }
.checkin-stat .cs-value {
  font-size: 22px;
  font-weight: 800;
  color: var(--gg-primary-dark);
  line-height: 1.1;
}
.checkin-widget .btn { margin-left: auto; }
.dash-subtitle {
  font-size: 14px;
  font-weight: 700;
  color: var(--gg-text);
  margin: 22px 0 10px;
}
.dash-note { font-size: 13px; color: var(--gg-text-muted); margin-top: 16px; }

/* 分享邀请 */
.referral-rules {
  margin: 0 0 22px;
  padding: 16px 18px;
  background: var(--gg-bg-soft, #f7f8fa);
  border: 1px solid var(--gg-border);
  border-radius: 10px;
}
.referral-rules .dash-subtitle { margin-top: 0; }
.referral-rule-list { list-style: none; padding: 0; margin: 0; }
.referral-rule-list li {
  position: relative;
  padding: 6px 0 6px 22px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gg-text-secondary);
}
.referral-rule-list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 13px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gg-primary, #4c6ef5);
}
.referral-grid { display: flex; gap: 24px; flex-wrap: wrap; align-items: flex-start; }
.referral-link-box { flex: 1; min-width: 240px; }
.referral-link-box label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--gg-text-secondary);
  margin-bottom: 6px;
}
.referral-link-row { display: flex; gap: 8px; }
.referral-link-row input {
  flex: 1;
  padding: 9px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  border: 1px solid var(--gg-border);
  border-radius: var(--radius);
  background: var(--gg-bg-alt);
  color: var(--gg-text);
}
.referral-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--gg-text-muted);
  font-size: 12px;
}
.referral-qr #qrcode {
  padding: 8px;
  background: #fff;
  border: 1px solid var(--gg-border);
  border-radius: var(--radius);
}
.invitee-list, .ledger-list { list-style: none; padding: 0; margin: 0; }
.invitee-item, .ledger-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 4px;
  border-bottom: 1px solid var(--gg-border);
  font-size: 14px;
}
.invitee-name { font-weight: 600; color: var(--gg-text); }
.invitee-date, .ledger-date { color: var(--gg-text-muted); font-size: 13px; }
.ledger-reason { flex: 1; color: var(--gg-text); }
.ledger-delta { font-weight: 700; }
.ledger-delta.in { color: #1E8449; }
.ledger-delta.out { color: #C0392B; }
.ledger-table { width: 100%; border-collapse: collapse; margin: 0; font-size: 14px; table-layout: fixed; }
.ledger-table th, .ledger-table td { padding: 11px 4px; border-bottom: 1px solid var(--gg-border); text-align: left; }
.ledger-table th { color: var(--gg-text-muted); font-weight: 600; font-size: 13px; }
.ledger-table .col-time { width: 160px; }
.ledger-table .col-credits { width: 84px; text-align: right; white-space: nowrap; }
.ledger-table .col-source { width: auto; }
.ledger-table td.ledger-date { color: var(--gg-text-muted); font-size: 13px; white-space: nowrap; }
.ledger-table td.ledger-reason { color: var(--gg-text); }
.ledger-table td.ledger-delta { text-align: right; white-space: nowrap; font-weight: 700; }
.dash-empty {
  padding: 24px;
  text-align: center;
  color: var(--gg-text-muted);
  font-size: 14px;
  background: var(--gg-bg-alt);
  border-radius: var(--radius);
}

/* 用户方案 */
.plan-current {
  display: inline-block;
  padding: 6px 14px;
  background: var(--gg-primary-soft);
  color: var(--gg-primary-dark);
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 18px;
}
.plan-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.plan-card {
  border: 1px solid var(--gg-border);
  border-radius: var(--radius-lg);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--gg-bg);
  position: relative;
}
.plan-card.current {
  border-color: var(--gg-primary);
  box-shadow: 0 0 0 2px var(--gg-primary-soft), var(--shadow-md);
}
.plan-card h4 { margin: 0; font-size: 16px; color: var(--gg-text); }
.plan-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.plan-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--gg-primary-soft);
  color: var(--gg-primary-dark);
  white-space: nowrap;
}
.plan-price { font-size: 24px; font-weight: 800; color: var(--gg-primary-dark); margin: 0; }
.plan-price small { font-size: 13px; font-weight: 500; color: var(--gg-text-muted); }
.plan-card ul { list-style: none; padding: 0; margin: 4px 0; flex: 1; }
.plan-card li {
  font-size: 13px;
  color: var(--gg-text-secondary);
  padding: 4px 0 4px 18px;
  position: relative;
}
.plan-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--gg-primary);
  font-weight: 700;
}
.plan-card .btn { width: 100%; margin-top: 6px; }
.plan-card .btn:disabled { opacity: 0.55; cursor: not-allowed; }

@media (max-width: 1100px) {
  .plan-cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .dashboard { flex-direction: column; padding: 16px; }
  .dashboard-sidebar {
    width: 100%;
    position: static;
    display: flex;
    align-items: center;
    gap: 14px;
  }
  .dashboard-user { border-bottom: none; margin-bottom: 0; padding-bottom: 0; flex: 1; }
  .dashboard-nav { flex-direction: row; flex-wrap: wrap; gap: 6px; }
  .dash-nav-item { padding: 8px 12px; font-size: 13px; }
  .dashboard-content { padding: 20px 18px; }
  .plan-cards { grid-template-columns: 1fr; }
}

/* 当前权益配额卡片（freemium.md §12.5 任务11） */
.plan-quota {
  margin-top: 28px;
  background: var(--gg-surface, #fff);
  border: 1px solid var(--gg-border, #e6ecf2);
  border-radius: 14px;
  padding: 20px 22px;
}
.plan-quota-title {
  margin: 0 0 16px;
  font-size: 17px;
  font-weight: 600;
  color: var(--gg-text, #1f2d3d);
}
.plan-quota-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.plan-quota-card {
  border: 1px solid var(--gg-border, #e6ecf2);
  border-radius: 10px;
  padding: 14px 16px;
  background: var(--gg-bg-alt, #f8fafc);
}
.plan-quota-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}
.plan-quota-name { font-size: 14px; font-weight: 600; color: var(--gg-text, #1f2d3d); }
.plan-quota-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  white-space: nowrap;
}
.plan-quota-badge.locked { background: #fde8e8; color: #c0392b; }
.plan-quota-badge.unlimited { background: #e6f6ec; color: #1e8e4a; }
.plan-quota-bar {
  height: 6px;
  border-radius: 999px;
  background: var(--gg-border, #e6ecf2);
  overflow: hidden;
  margin-bottom: 8px;
}
.plan-quota-fill { height: 100%; background: var(--gg-primary, #2f6df6); border-radius: 999px; }
.plan-quota-meta { font-size: 13px; color: var(--gg-text-muted, #6b7a8a); }
.plan-quota-hint {
  margin: 16px 0 0;
  font-size: 13px;
  color: var(--gg-text-muted, #6b7a8a);
}
@media (max-width: 860px) {
  .plan-quota-grid { grid-template-columns: 1fr; }
}

/* ==================== Profile Page（公开个人主页，统一外壳） ==================== */
.profile-page {
  min-height: 100vh;
  padding: 40px 24px;
  max-width: 800px;
  margin: 0 auto;
}

.profile-header {
  text-align: center;
  padding: 40px 0;
}

.profile-avatar {
  width: 128px;
  height: 128px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 16px;
  border: 4px solid var(--gg-primary);
}

.profile-name {
  font-size: 28px;
  font-weight: 700;
  color: var(--gg-text);
  margin-bottom: 8px;
}

.profile-bio {
  color: var(--gg-text-light);
  font-size: 16px;
  line-height: 1.6;
}

.profile-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 32px;
  padding: 20px 0;
  border-top: 1px solid var(--gg-border);
  border-bottom: 1px solid var(--gg-border);
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--gg-primary);
}

/* ==================== Popular tags hub（seo_plan.md A1④） ==================== */
/* 参考 insightagent 卡片风格：浅灰卡片 + 图标标题 + chip + tip 框（teal 配色版） */
.tag-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 26px;
}

.tag-card {
  background: var(--gg-bg-alt, #f7f9fa);
  border: 1px solid var(--gg-border, #eaedef);
  border-radius: 14px;
  padding: 24px;
  transition: border-color .18s ease, box-shadow .18s ease;
}

.tag-card:hover {
  border-color: var(--gg-primary-light, #b2dfdb);
  box-shadow: var(--shadow-md, 0 4px 16px rgba(15, 20, 25, 0.06));
}

.tag-card-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.tag-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--gg-primary-soft, #e0f2f1);
  color: var(--gg-primary-dark, #00796b);
  flex-shrink: 0;
}

.tag-card-icon svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.tag-card-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--gg-text, #0f1419);
  letter-spacing: -0.3px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 标签 chip（参考蓝底胶囊，改为本站 teal 体系） */
.tag-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  background: var(--gg-primary-soft, #e0f2f1);
  color: var(--gg-primary-dark, #00796b);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: transform .15s ease, background .15s ease, color .15s ease;
}

.tag-chip:hover {
  background: var(--gg-primary, #009688);
  color: #fff;
  transform: translateY(-2px);
}

/* Pro Tip 提示框 */
.tag-card-tip {
  margin-top: 18px;
  padding: 12px 14px;
  background: var(--gg-primary-soft, #e0f2f1);
  border: 1px solid var(--gg-primary-light, #b2dfdb);
  border-radius: 10px;
}

.tag-card-tip p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--gg-text-secondary, #5a6b73);
}

.tag-card-tip strong {
  color: var(--gg-primary-dark, #00796b);
}

/* 页脚内联标签枢纽 */
.footer-tags {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px dashed var(--gg-border, #25324f);
  font-size: 13px;
  color: var(--gg-text-muted, #9aa7c2);
  line-height: 2;
}

.footer-tags-label {
  font-weight: 600;
  margin-right: 4px;
}

.footer-tag {
  color: var(--gg-text-muted, #9aa7c2);
  text-decoration: none;
}

.footer-tag:hover {
  color: var(--gg-primary, #2f6df6);
  text-decoration: underline;
}

.footer-tag-sep {
  margin: 0 6px;
  opacity: .5;
}


.stat-label {
  font-size: 14px;
  color: var(--gg-text-light);
  margin-top: 4px;
}

.profile-content {
  margin-top: 32px;
}

.content-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--gg-text);
  margin-bottom: 16px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.gallery-card {
  background: var(--gg-surface);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--gg-shadow);
  transition: transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
}

.gallery-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--gg-shadow-lg);
}

.card-image {
  height: 200px;
  background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gg-primary);
  font-size: 48px;
}

.card-content {
  padding: 16px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--gg-text);
  margin-bottom: 8px;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  color: var(--gg-text-light);
  font-size: 14px;
}

.empty-state {
  text-align: center;
  padding: 80px 40px;
  color: var(--gg-text-light);
  background: var(--gg-surface);
  border-radius: 12px;
}

.back-link {
  display: inline-block;
  margin-bottom: 24px;
  color: var(--gg-primary);
  text-decoration: none;
  font-weight: 500;
}

.back-link:hover {
  text-decoration: underline;
}

/* ===== 关注按钮（作者页 / 关注列表，复用 .idol-btn） ===== */
.profile-actions {
  margin: 12px 0 4px;
  text-align: center;
}
.idol-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border: 1px solid var(--gg-primary, #2f6df6);
  border-radius: 999px;
  background: transparent;
  color: var(--gg-primary, #2f6df6);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.idol-btn:hover {
  background: var(--gg-primary, #2f6df6);
  color: #fff;
}
.idol-btn.following {
  background: var(--gg-surface, #f1f5f9);
  border-color: var(--gg-border, #e2e8f0);
  color: var(--gg-text-muted, #64748b);
}
.idol-btn.following:hover {
  background: #fee2e2;
  border-color: #fca5a5;
  color: #dc2626;
}
.idol-icon { font-size: 14px; line-height: 1; }

/* ===== 关注的作者列表 ===== */
.author-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.author-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--gg-surface);
  border: 1px solid var(--gg-border, #e2e8f0);
  border-radius: 12px;
  cursor: pointer;
  transition: box-shadow 0.15s;
}
.author-card:hover {
  box-shadow: var(--gg-shadow, 0 2px 8px rgba(0,0,0,0.06));
}
.author-avatar {
  width: 56px; height: 56px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  background: #f1f5f9;
}
.author-info { flex: 1; min-width: 0; }
.author-name { font-weight: 600; font-size: 15px; }
.author-bio {
  font-size: 13px; color: var(--gg-text-muted, #64748b);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.author-meta {
  display: flex; gap: 16px;
  font-size: 12px; color: var(--gg-text-muted, #64748b);
  margin-top: 4px;
}
.author-actions { flex-shrink: 0; }