/* ===== CSS Variables ===== */
:root {
  --primary: #1565C0;
  --primary-dark: #0D47A1;
  --primary-light: #1E88E5;
  --accent: #2B2D42;
  --accent-light: #3D405B;
  --bg: #0a0e1a;
  --bg-card: #111827;
  --bg-section-alt: #0d1220;
  --text-primary: #e8eaed;
  --text-secondary: #9aa0a6;
  --text-light: #6b7280;
  --border: rgba(255,255,255,0.08);
  --glow: rgba(21,101,192,0.3);
  --radius: 16px;
  --radius-sm: 10px;
}

/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ===== Container ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Navbar ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-container {
  max-width: 1200px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav-logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; }
.logo-icon { font-size: 24px; }
.logo-icon-img { width: 28px; height: 28px; object-fit: contain; }
.logo-text { background: linear-gradient(135deg, var(--primary-light), #64B5F6); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.nav-links { display: flex; gap: 32px; }
.nav-link { font-size: 14px; color: var(--text-secondary); transition: color 0.3s; font-weight: 500; }
.nav-link:hover { color: var(--primary-light); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text-secondary); margin: 5px 0; transition: 0.3s; border-radius: 2px; }

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center;
  overflow: hidden; padding: 100px 24px 60px;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(21,101,192,0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(30,136,229,0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(43,45,66,0.2) 0%, transparent 50%);
  z-index: 0;
}
.hero-content { position: relative; z-index: 1; text-align: center; max-width: 720px; }
.hero-title {
  font-size: 56px; font-weight: 800; letter-spacing: 2px;
  background: linear-gradient(135deg, #fff 0%, #90CAF9 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 16px;
}
.hero-slogan { font-size: 18px; color: var(--text-secondary); margin-bottom: 40px; letter-spacing: 1px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; margin-bottom: 60px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; padding: 14px 32px;
  border-radius: 50px; font-size: 15px; font-weight: 600;
  transition: all 0.3s; cursor: pointer; border: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; box-shadow: 0 4px 20px var(--glow);
}
.btn-primary:hover { box-shadow: 0 6px 30px rgba(21,101,192,0.5); transform: translateY(-2px); }
.btn-outline {
  background: transparent; color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--primary-light); color: var(--primary-light); }

/* ===== Stats ===== */
.hero-stats { display: flex; gap: 48px; justify-content: center; }
.stat-item { text-align: center; }
.stat-number { display: block; font-size: 36px; font-weight: 800; color: var(--primary-light); }
.stat-label { font-size: 14px; color: var(--text-light); margin-top: 4px; }

/* ===== SVG Icons ===== */
.svg-icon { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; color: var(--primary-light); flex-shrink: 0; }
.svg-icon svg { width: 100%; height: 100%; }
.svg-icon-lg { width: 40px; height: 40px; }
.svg-icon-xl { width: 48px; height: 48px; }

/* ===== Section ===== */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-section-alt); }
.section-header { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.section-line { width: 4px; height: 28px; background: var(--primary); border-radius: 2px; }
.section-title { font-size: 28px; font-weight: 700; }
.section-subtitle { font-size: 15px; color: var(--text-light); margin-bottom: 32px; padding-left: 16px; }

/* ===== Card Base ===== */
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  transition: all 0.3s;
}
.card:hover { border-color: rgba(21,101,192,0.3); box-shadow: 0 4px 24px rgba(21,101,192,0.1); transform: translateY(-2px); }

/* ===== Daily Tool ===== */
.daily-tool-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 32px;
  cursor: pointer; transition: all 0.3s;
  border-left: 4px solid var(--primary);
}
.daily-tool-card:hover { border-color: rgba(21,101,192,0.3); box-shadow: 0 4px 24px rgba(21,101,192,0.1); }
.daily-tool-header { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.daily-tool-icon { font-size: 40px; }
.daily-tool-name { font-size: 22px; font-weight: 700; }
.daily-tool-subtitle { font-size: 14px; color: var(--text-secondary); margin-top: 2px; }
.daily-tool-desc { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 16px; }
.daily-tool-footer { display: flex; align-items: center; justify-content: space-between; }
.daily-tool-tag { font-size: 13px; color: var(--primary-light); background: rgba(21,101,192,0.1); padding: 4px 14px; border-radius: 6px; }
.daily-tool-hint { font-size: 13px; color: var(--text-light); }

/* ===== Tools Grid ===== */
.tools-categories { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 24px; }
.cat-btn {
  padding: 8px 20px; border-radius: 50px; font-size: 14px;
  background: rgba(255,255,255,0.05); border: 1px solid var(--border);
  color: var(--text-secondary); cursor: pointer; transition: all 0.3s;
}
.cat-btn:hover, .cat-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 20px; }
.tool-card { cursor: pointer; }
.tool-card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.tool-card-icon { font-size: 32px; }
.tool-card-name { font-size: 17px; font-weight: 700; }
.tool-card-cat { font-size: 12px; color: var(--primary-light); background: rgba(21,101,192,0.1); padding: 2px 10px; border-radius: 4px; margin-left: 8px; }
.tool-card-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ===== Trending Date Bar ===== */
.trending-date-bar {
  display: flex; align-items: center; gap: 12px; margin-bottom: 20px;
  flex-wrap: wrap;
}
.date-nav-btn {
  padding: 8px 18px; border-radius: 50px; font-size: 14px;
  background: rgba(255,255,255,0.05); border: 1px solid var(--border);
  color: var(--text-secondary); cursor: pointer; transition: all 0.3s;
  white-space: nowrap;
}
.date-nav-btn:hover:not(:disabled) { background: var(--primary); color: #fff; border-color: var(--primary); }
.date-nav-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.date-picker {
  padding: 8px 16px; border-radius: 50px; font-size: 14px;
  background: rgba(255,255,255,0.05); border: 1px solid var(--border);
  color: var(--text-primary); outline: none; cursor: pointer;
  color-scheme: dark;
}
.date-picker:focus { border-color: var(--primary-light); }
.trending-categories { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; }
.star-up { font-size: 13px; color: #4CAF50; font-weight: 600; }
.star-down { font-size: 13px; color: #EF5350; font-weight: 600; }
.trending-seen { font-size: 12px; color: var(--text-light); }

/* ===== Glossary Categories ===== */
.glossary-categories { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; }

/* ===== Trending Grid ===== */
.trending-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); gap: 20px; }
.trending-card-header { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.trending-rank { font-size: 24px; font-weight: 800; color: var(--primary-light); min-width: 36px; }
.trending-name { font-size: 16px; font-weight: 600; color: var(--primary-light); word-break: break-all; }
.trending-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.trending-meta { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.trending-star { font-size: 14px; color: #FFA726; font-weight: 600; }
.trending-lang { font-size: 12px; color: var(--text-light); background: rgba(255,255,255,0.06); padding: 3px 10px; border-radius: 4px; }
.trending-cat { font-size: 12px; color: var(--primary-light); background: rgba(21,101,192,0.1); padding: 3px 10px; border-radius: 4px; }

/* ===== Glossary ===== */
.glossary-search { margin-bottom: 24px; }
.search-input {
  width: 100%; padding: 14px 20px; border-radius: 50px;
  background: rgba(255,255,255,0.05); border: 1px solid var(--border);
  color: var(--text-primary); font-size: 15px; outline: none;
  transition: border-color 0.3s;
}
.search-input:focus { border-color: var(--primary-light); }
.search-input::placeholder { color: var(--text-light); }
.glossary-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.glossary-card-item { cursor: pointer; }
.glossary-card-header-row { display: flex; align-items: baseline; gap: 10px; margin-bottom: 4px; }
.glossary-card-title { font-size: 17px; font-weight: 700; color: var(--primary-light); }
.glossary-card-cn { font-size: 14px; color: var(--text-secondary); }
.glossary-card-fullname { font-size: 12px; color: var(--text-light); margin-bottom: 8px; }
.glossary-card-def { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.glossary-card-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }

/* ===== Original ===== */
.original-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 20px; }
.original-card { cursor: pointer; }
.original-card-icon { font-size: 36px; margin-bottom: 12px; line-height: 1; }
.original-card-icon svg { width: 36px; height: 36px; color: var(--primary-light); }
.original-card-name { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.original-card-subtitle { font-size: 14px; color: var(--text-secondary); margin-bottom: 12px; }
.original-card-desc { font-size: 14px; color: var(--text-light); line-height: 1.7; }

/* ===== About ===== */
.about-content { text-align: center; max-width: 600px; margin: 0 auto; }
.about-content p { font-size: 16px; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.8; }
.miniapp-qr { margin-top: 32px; }
.qr-image {
  width: 160px; height: 160px; margin: 0 auto 12px;
  border-radius: var(--radius-sm); object-fit: cover;
}
.qr-placeholder {
  width: 160px; height: 160px; margin: 0 auto 12px;
  background: rgba(255,255,255,0.05); border: 1px solid var(--border);
  border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
  color: var(--text-light); font-size: 14px;
}
.qr-hint { font-size: 14px; color: var(--text-light); }
.qr-group { display: flex; justify-content: center; align-items: flex-start; gap: 50px; }
.about-email { font-size: 15px; color: var(--text-secondary); margin-top: 20px; }
.about-email a { color: var(--primary-light); text-decoration: none; }
.about-email a:hover { text-decoration: underline; }

/* ===== Roadmap Horizontal Grid ===== */
.roadmap-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.roadmap-col { display: flex; flex-direction: column; }
.roadmap-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  flex: 1;
  transition: all 0.3s;
}
.roadmap-card:hover {
  border-color: rgba(21,101,192,0.3);
  box-shadow: 0 4px 24px rgba(21,101,192,0.1);
}
.roadmap-card-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.node-circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  flex-shrink: 0;
}
.node-circle-sm { width: 36px; height: 36px; font-size: 16px; }
.node-num { position: relative; z-index: 1; }
.stage-title { font-size: 17px; font-weight: 700; }
.stage-time {
  font-size: 12px;
  color: var(--text-light);
  background: rgba(255,255,255,0.06);
  padding: 2px 10px;
  border-radius: 50px;
  display: inline-block;
  margin-top: 2px;
}
.stage-subtitle { font-size: 13px; color: var(--text-secondary); margin-bottom: 12px; }
.stage-items { display: flex; flex-direction: column; gap: 8px; }
.stage-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.stage-item-link {
  cursor: pointer;
  transition: color 0.2s;
  border-radius: 6px;
  padding: 4px 6px;
  margin: -4px -6px;
}
.stage-item-link:hover {
  color: var(--primary-light);
  background: rgba(21,101,192,0.08);
}
.item-check {
  flex-shrink: 0;
  color: #4CAF50;
  font-weight: 700;
  font-size: 13px;
  margin-top: 1px;
}

/* ===== Roadmap Detail Modal ===== */
.roadmap-detail-section {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.roadmap-detail-section:last-of-type { border-bottom: none; }
.rd-section-title { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.rd-section-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 12px; }
.rd-code-block {
  background: rgba(0,0,0,0.4);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  padding: 14px 18px;
  margin-bottom: 12px;
  overflow-x: auto;
}
.rd-code-block pre {
  font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
  font-size: 13px;
  color: #4FC3F7;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-all;
  margin: 0;
}
.rd-example {
  font-size: 14px;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.03);
  border-radius: 8px;
  padding: 12px 16px;
  line-height: 1.7;
  margin-bottom: 10px;
}
.rd-tip {
  font-size: 13px;
  color: var(--text-light);
  padding: 8px 0;
  line-height: 1.6;
}
.rd-footer-tip {
  font-size: 14px;
  color: var(--primary-light);
  background: rgba(21,101,192,0.08);
  border-radius: 8px;
  padding: 14px 18px;
  line-height: 1.7;
  margin-top: 8px;
}
.tips-icon { flex-shrink: 0; font-size: 16px; }

/* ===== Python速查 ===== */
.python-categories { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 24px; }
.python-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(380px, 1fr)); gap: 20px; }
.python-card { padding: 20px; }
.python-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.python-card-cat {
  font-size: 12px;
  color: var(--primary-light);
  background: rgba(21,101,192,0.1);
  padding: 3px 10px;
  border-radius: 4px;
  flex-shrink: 0;
}
.python-card-title { font-size: 17px; font-weight: 700; }
.python-command {
  background: rgba(0,0,0,0.4);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  padding: 14px 18px;
  margin-bottom: 12px;
  overflow-x: auto;
}
.python-command code {
  font-family: 'SF Mono', 'Fira Code', 'JetBrains Mono', Consolas, 'Courier New', monospace;
  font-size: 13px;
  color: #4FC3F7;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-all;
}
.python-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 8px;
}
.python-card-hint {
  font-size: 12px;
  color: var(--primary-light);
  opacity: 0.6;
  text-align: right;
  margin-top: 4px;
  transition: opacity 0.3s;
}
.python-card:hover .python-card-hint { opacity: 1; }

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 0; text-align: center;
}
.footer-content { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.footer-brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 16px; }
.footer-slogan { font-size: 14px; color: var(--text-secondary); }
.footer-copy { font-size: 13px; color: var(--text-light); }

/* ===== Modal ===== */
.modal-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(0,0,0,0.7); backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden; transition: all 0.3s;
}
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal-content {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 36px;
  max-width: 680px; width: 90%; max-height: 85vh; overflow-y: auto;
  position: relative; transform: translateY(20px); transition: transform 0.3s;
}
.modal-overlay.active .modal-content { transform: translateY(0); }
.modal-close {
  position: absolute; top: 16px; right: 16px;
  background: rgba(255,255,255,0.08); border: none;
  color: var(--text-secondary); font-size: 18px; width: 36px; height: 36px;
  border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all 0.3s;
}
.modal-close:hover { background: rgba(255,255,255,0.15); color: #fff; }
.detail-header { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }
.detail-header h2 { font-size: 24px; font-weight: 700; }
.detail-subtitle { font-size: 14px; color: var(--text-secondary); margin-top: 4px; }
.detail-tag { font-size: 13px; color: var(--primary-light); background: rgba(21,101,192,0.1); padding: 4px 14px; border-radius: 6px; display: inline-block; margin-bottom: 16px; }
.detail-desc { font-size: 15px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 20px; }
.detail-content { font-size: 15px; color: var(--text-primary); line-height: 1.9; padding: 20px; background: rgba(255,255,255,0.03); border-radius: var(--radius-sm); border: 1px solid var(--border); margin-bottom: 20px; }
.detail-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag { font-size: 12px; color: var(--primary-light); background: rgba(21,101,192,0.08); padding: 4px 12px; border-radius: 4px; }

/* ===== Modal Detail Sections ===== */
.modal-section { margin-bottom: 20px; }
.modal-section-label { font-size: 15px; font-weight: 700; margin-bottom: 10px; }
.modal-features { display: flex; flex-direction: column; gap: 6px; }
.modal-feature-item { font-size: 14px; color: var(--text-secondary); line-height: 1.7; padding-left: 4px; }
.modal-prompt-card {
  background: rgba(255,255,255,0.03); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px 16px; margin-bottom: 12px;
}
.modal-prompt-scene { font-size: 14px; font-weight: 600; margin-bottom: 8px; color: var(--primary-light); }
.modal-prompt-content {
  background: rgba(0,0,0,0.3); border-radius: 6px; padding: 12px 14px;
}
.modal-prompt-content code {
  font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
  font-size: 13px; color: #4FC3F7; line-height: 1.7; white-space: pre-wrap; word-break: break-all;
}
.modal-tips-block {
  font-size: 14px; color: var(--text-light); background: rgba(255,255,255,0.03);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 12px 16px; line-height: 1.7;
}
.modal-url-card { font-size: 14px; color: var(--text-secondary); }
.modal-url-link { color: var(--primary-light); word-break: break-all; }
.modal-url-link:hover { text-decoration: underline; }

/* ===== Original Detail Extras ===== */
.detail-emoji { font-size: 48px; line-height: 1; margin-right: 4px; }
.modal-screenshots {
  display: flex; gap: 12px; overflow-x: auto; padding-bottom: 8px;
}
.modal-screenshot-item { flex: 0 0 auto; max-width: 280px; }
.modal-screenshot-item img {
  width: 100%; border-radius: var(--radius-sm); border: 1px solid var(--border);
}
.modal-screenshot-caption {
  font-size: 12px; color: var(--text-light); text-align: center; margin-top: 6px;
}
.modal-tech-stack { display: flex; flex-wrap: wrap; gap: 8px; }
.tech-tag {
  font-size: 13px; padding: 4px 12px; border-radius: 20px;
  background: rgba(21,101,192,0.15); color: var(--primary-light);
  border: 1px solid rgba(21,101,192,0.25);
}

/* ===== Python Modal Code Blocks ===== */
.modal-code-block {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 16px; overflow-x: auto;
}
.modal-code-block code {
  font-family: 'Fira Code', 'Consolas', monospace; font-size: 13px;
  color: #4FC3F7; line-height: 1.7; white-space: pre-wrap; word-break: break-all;
}
.modal-ai-prompt-block {
  background: rgba(21,101,192,0.08); border: 1px solid rgba(21,101,192,0.2);
  border-radius: var(--radius-sm); padding: 12px 16px; overflow-x: auto;
}
.modal-ai-prompt-block code {
  font-family: 'Fira Code', 'Consolas', monospace; font-size: 13px;
  color: #81D4FA; line-height: 1.7; white-space: pre-wrap; word-break: break-all;
}

/* ===== Loading ===== */
.loading-placeholder {
  text-align: center; padding: 60px; color: var(--text-light); font-size: 15px;
}
.daily-tool-loading { text-align: center; padding: 40px; color: var(--text-light); }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.active {
    display: flex; flex-direction: column; position: absolute;
    top: 64px; left: 0; right: 0; background: rgba(10,14,26,0.95);
    padding: 20px 24px; gap: 16px; border-bottom: 1px solid var(--border);
  }
  .hero { min-height: auto; padding: 120px 24px 60px; }
  .hero-title { font-size: 36px; }
  .hero-slogan { font-size: 16px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-stats { gap: 24px; }
  .stat-number { font-size: 28px; }
  .section { padding: 48px 0; }
  .section-title { font-size: 22px; }
  .tools-grid, .trending-grid, .glossary-grid, .original-grid, .python-grid {
    grid-template-columns: 1fr;
  }
  .roadmap-timeline { grid-template-columns: 1fr 1fr; }
  .modal-content { padding: 24px; width: 95%; }
  .trending-date-bar { justify-content: center; }
}