:root {
  --primary: #4f46e5; --primary-hover: #4338ca; --primary-light: #eef2ff;
  --primary-50: #f5f3ff; --primary-100: #ede9fe; --primary-600: #5b21b6;
  --text: #0f172a; --text-secondary: #475569; --text-muted: #94a3b8;
  --bg: #f8fafc; --surface: #ffffff; --border: #e2e8f0; --border-light: #f1f5f9;
  --green: #059669; --green-light: #d1fae5; --green-bg: #ecfdf5;
  --red: #dc2626; --red-light: #fee2e2; --red-bg: #fef2f2;
  --amber: #d97706; --amber-light: #fef3c7; --amber-bg: #fffbeb;
  --blue: #2563eb; --blue-light: #dbeafe;
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.03);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
  --shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.03);
  --shadow-lg: 0 12px 28px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.03);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.07), 0 8px 16px rgba(0,0,0,0.03);
  --radius-sm: 8px; --radius: 12px; --radius-lg: 16px; --radius-xl: 20px;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.6; min-height: 100vh;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}

/* ── Page Transition ── */
.page { display: none; animation: fadeSlideIn 0.3s ease; }
.page.active { display: block; }
@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Top Nav ── */
.topnav {
  background: rgba(255,255,255,0.85); backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border); padding: 0 40px; height: 64px;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 100;
}
.topnav-brand {
  font-size: 20px; font-weight: 800; color: var(--text);
  display: flex; align-items: center; gap: 10px; cursor: pointer;
  letter-spacing: -0.3px; user-select: none;
}
.topnav-brand .dot {
  width: 34px; height: 34px; background: linear-gradient(135deg, #6366f1, #8b5cf6);
  border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px; font-weight: 800;
  box-shadow: 0 2px 8px rgba(99,102,241,0.3);
}
.topnav-nav { display: flex; gap: 2px; }
.nav-link {
  padding: 8px 18px; border-radius: var(--radius-sm); font-size: 14px; color: var(--text-secondary);
  cursor: pointer; transition: var(--transition); font-weight: 500; background: none; border: none;
  font-family: inherit; position: relative;
}
.nav-link:hover { color: var(--text); background: var(--border-light); }
.nav-link.active { color: var(--primary); background: var(--primary-light); font-weight: 600; }
.topnav-right { display: flex; align-items: center; gap: 12px; }
.topnav-user { font-size: 13px; color: var(--text-muted); font-weight: 500; }
.topnav-balance {
  font-size: 14px; font-weight: 700; color: var(--primary); cursor: pointer;
  background: var(--primary-light); padding: 7px 16px; border-radius: 20px;
  letter-spacing: -0.2px; transition: var(--transition);
}
.topnav-balance:hover { background: #e0e7ff; }

/* ── Buttons ── */
.btn {
  height: 42px; padding: 0 22px; border-radius: var(--radius-sm); font-size: 14px;
  font-weight: 600; cursor: pointer; border: none; display: inline-flex;
  align-items: center; gap: 8px; transition: var(--transition); font-family: inherit;
  letter-spacing: -0.1px; position: relative; overflow: hidden;
}
.btn-primary { background: linear-gradient(135deg, #6366f1, #4f46e5); color: #fff; box-shadow: 0 2px 8px rgba(79,70,229,0.2); }
.btn-primary:hover { background: linear-gradient(135deg, #4f46e5, #4338ca); box-shadow: 0 4px 14px rgba(79,70,229,0.3); transform: translateY(-1px); }
.btn-secondary { background: #fff; color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border-light); border-color: #cbd5e1; }
.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { background: var(--border-light); }
.btn-sm { height: 34px; padding: 0 14px; font-size: 13px; }
.btn-lg { height: 54px; padding: 0 36px; font-size: 16px; border-radius: var(--radius); font-weight: 700; }
.btn-block { width: 100%; justify-content: center; }
.btn:active { transform: scale(0.98); }

/* ── Layout ── */
.main { max-width: 1240px; margin: 0 auto; }

/* ── Hero ── */
.hero {
  text-align: center; padding: 100px 40px 80px;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, #eef2ff 0%, transparent 60%),
              linear-gradient(180deg, #fafaff 0%, #f8fafc 100%);
  position: relative; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; top: -120px; right: -120px;
  width: 400px; height: 400px; background: radial-gradient(circle, rgba(99,102,241,0.06) 0%, transparent 70%);
  border-radius: 50%; pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; bottom: -100px; left: -80px;
  width: 360px; height: 360px; background: radial-gradient(circle, rgba(139,92,246,0.05) 0%, transparent 70%);
  border-radius: 50%; pointer-events: none;
}
.hero > * { position: relative; z-index: 1; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 20px; border-radius: 24px; font-size: 14px;
  font-weight: 600; background: var(--green-bg); color: var(--green);
  margin-bottom: 28px; border: 1px solid rgba(5,150,105,0.12);
}
.hero-badge::before {
  content: ""; width: 8px; height: 8px; background: var(--green);
  border-radius: 50%; animation: pulse 2s infinite;
  box-shadow: 0 0 0 4px rgba(5,150,105,0.15);
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(0.9)} }
.hero h1 { font-size: 52px; font-weight: 800; letter-spacing: -1.8px; margin-bottom: 20px; line-height: 1.12; }
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, #6366f1, #8b5cf6, #a78bfa);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p { color: var(--text-secondary); font-size: 18px; max-width: 560px; margin: 0 auto 40px; line-height: 1.75; }
.hero-actions { display: flex; gap: 14px; justify-content: center; }

/* ── Features ── */
.features-section { padding: 0 40px 80px; }
.features {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  max-width: 980px; margin: 0 auto;
}
.feature-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 40px 32px; text-align: center; transition: var(--transition);
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0; transition: var(--transition);
}
.feature-card:hover {
  border-color: transparent; box-shadow: var(--shadow-xl); transform: translateY(-3px);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 56px; height: 56px; border-radius: 16px; display: inline-flex;
  align-items: center; justify-content: center; font-size: 26px; margin-bottom: 24px;
  transition: var(--transition);
}
.feature-card:hover .feature-icon { transform: scale(1.08); }
.feature-icon.blue { background: #eef2ff; color: #4f46e5; }
.feature-icon.green { background: var(--green-light); }
.feature-icon.amber { background: var(--amber-light); }
.feature-card h4 { font-size: 18px; font-weight: 700; margin-bottom: 10px; letter-spacing: -0.2px; }
.feature-card p { color: var(--text-secondary); font-size: 14px; line-height: 1.7; }

/* ── Section Header ── */
.section-header { padding: 48px 40px 32px; }
.section-header h3 { font-size: 26px; font-weight: 800; letter-spacing: -0.4px; }
.section-header p { color: var(--text-secondary); font-size: 15px; margin-top: 8px; }

/* ── Skill Grid ── */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px; padding: 0 40px 56px;
}
.skill-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px; transition: var(--transition); cursor: pointer; display: flex;
  flex-direction: column; position: relative; overflow: hidden;
}
.skill-card::after {
  content: ""; position: absolute; inset: 0; border-radius: var(--radius-lg);
  border: 2px solid transparent; transition: var(--transition); pointer-events: none;
}
.skill-card:hover {
  border-color: var(--primary); box-shadow: var(--shadow-lg); transform: translateY(-2px);
}
.skill-card:hover::after { border-color: rgba(79,70,229,0.15); }
.skill-card-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 10px; }
.skill-name { font-size: 17px; font-weight: 700; color: var(--text); letter-spacing: -0.2px; }
.skill-provider { font-size: 13px; color: var(--text-muted); margin-top: 3px; font-weight: 500; }
.skill-desc {
  color: var(--text-secondary); font-size: 14px; line-height: 1.65;
  flex: 1; margin: 12px 0 16px; display: -webkit-box;
  -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.skill-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px; }
.tag {
  padding: 5px 12px; border-radius: 6px; font-size: 12px; font-weight: 500;
  background: var(--border-light); color: var(--text-secondary); letter-spacing: -0.1px;
}
.skill-footer { display: flex; justify-content: space-between; align-items: center; padding-top: 16px; border-top: 1px solid var(--border-light); }
.skill-price { font-size: 24px; font-weight: 800; color: var(--primary); letter-spacing: -0.5px; }
.skill-price .unit { font-size: 13px; color: var(--text-muted); font-weight: 400; }
.skill-meta { display: flex; align-items: center; gap: 12px; }
.badge-free {
  padding: 4px 10px; border-radius: 6px; font-size: 12px; font-weight: 700;
  background: var(--green-light); color: #047857; white-space: nowrap;
}
.badge-source {
  font-size: 11px; padding: 4px 12px; border-radius: 6px;
  background: var(--primary-light); color: var(--primary); font-weight: 600;
}
.dev-link {
  font-size: 13px; color: var(--primary); cursor: pointer; margin-top: 8px;
  display: inline-block; font-weight: 500;
}
.dev-link:hover { text-decoration: underline; }

/* ── Category Bar ── */
.cat-bar { display: flex; gap: 10px; padding: 0 40px 28px; flex-wrap: wrap; }
.cat-chip {
  padding: 9px 20px; border-radius: 24px; font-size: 14px; cursor: pointer;
  background: #fff; border: 1px solid var(--border); color: var(--text-secondary);
  transition: var(--transition); font-weight: 500;
}
.cat-chip:hover { border-color: #a5b4fc; color: var(--primary); background: var(--primary-50); }
.cat-chip.active { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; box-shadow: 0 2px 8px rgba(79,70,229,0.25); }

/* ── Auth ── */
.auth-container { max-width: 440px; margin: 72px auto 80px; padding: 0 16px; }
.auth-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl);
  padding: 44px 40px; box-shadow: var(--shadow-lg);
}
.auth-card h3 { font-size: 24px; font-weight: 800; margin-bottom: 28px; text-align: center; letter-spacing: -0.4px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; font-weight: 600; letter-spacing: -0.1px; }
.input, select {
  width: 100%; padding: 11px 16px; background: #fff;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text); font-size: 14px; outline: none;
  font-family: inherit; transition: var(--transition);
}
.input:hover, select:hover { border-color: #cbd5e1; }
.input:focus, select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,0.1), 0 1px 2px rgba(0,0,0,0.03); }
.input::placeholder { color: #cbd5e1; }
.tab-row {
  display: flex; gap: 0; margin-bottom: 28px;
  background: var(--border-light); border-radius: var(--radius-sm); padding: 4px;
}
.tab {
  flex: 1; text-align: center; padding: 10px 8px; font-size: 14px; font-weight: 600;
  cursor: pointer; color: var(--text-secondary); border-radius: 6px;
  background: none; border: none; font-family: inherit; transition: var(--transition);
}
.tab:hover { color: var(--text); }
.tab.active { background: #fff; color: var(--text); box-shadow: var(--shadow); }

.login-subtab { font-family: inherit; color: var(--text-secondary); transition: var(--transition); }
.login-subtab:hover { color: var(--text); }
.login-subtab.active { background: var(--primary) !important; color: #fff !important; font-weight: 600; }

.model-filter-tab { padding: 6px 14px; border: 1px solid var(--border); background: var(--surface); color: var(--text-secondary); border-radius: 20px; cursor: pointer; font-size: 13px; font-family: inherit; transition: var(--transition); display: inline-block; }
.model-filter-tab.active { background: var(--primary) !important; color: #fff !important; border-color: var(--primary) !important; }
.model-filter-tab:hover { border-color: var(--primary) !important; color: var(--primary) !important; }
.model-filter-tab.active:hover { color: #fff !important; }

.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px; padding: 0 40px 56px;
}
.model-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px; transition: var(--transition); display: flex;
  flex-direction: column; position: relative; overflow: hidden;
}
.model-card::after {
  content: ""; position: absolute; inset: 0; border-radius: var(--radius-lg);
  border: 2px solid transparent; transition: var(--transition); pointer-events: none;
}
.model-card:hover {
  border-color: var(--primary); box-shadow: var(--shadow-lg); transform: translateY(-2px);
}
.model-card:hover::after { border-color: rgba(79,70,229,0.15); }
.model-card-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 10px; }
.model-name { font-size: 17px; font-weight: 700; color: var(--text); letter-spacing: -0.2px; word-break: break-all; }
.model-provider { font-size: 13px; color: var(--text-muted); margin-top: 3px; font-weight: 500; }
.model-meta { display: flex; gap: 6px; align-items: center; margin: 8px 0 12px; }
.model-cat { font-size: 11px; padding: 4px 8px; border-radius: 4px; background: var(--border-light); color: var(--text-secondary); }
.model-ctx { font-size: 11px; color: var(--text-muted); }
.model-pricing { font-size: 14px; color: var(--text-secondary); margin-top: auto; padding-top: 16px; border-top: 1px solid var(--border-light); display: flex; gap: 12px; align-items: center; }
.model-pricing b.input-price { color: var(--green); }
.model-pricing b.output-price { color: var(--red); }
.model-pricing .unit { font-size: 13px; color: var(--text-muted); }
.model-non-token { font-size: 12px; color: var(--text-muted); margin-top: auto; padding-top: 16px; border-top: 1px solid var(--border-light); }


@media (max-width: 768px) {
  .model-grid { grid-template-columns: 1fr; padding: 0 16px 40px; }
}

/* ── Balance Page ── */
.balance-card {
  background: linear-gradient(135deg, #312e81 0%, #4f46e5 40%, #6366f1 100%);
  border-radius: var(--radius-xl); padding: 48px 40px; text-align: center;
  margin: 44px 40px 32px; color: #fff; position: relative; overflow: hidden;
  box-shadow: 0 8px 32px rgba(79,70,229,0.2);
}
.balance-card::before {
  content: ""; position: absolute; top: -60px; right: -40px;
  width: 200px; height: 200px; background: rgba(255,255,255,0.06);
  border-radius: 50%; pointer-events: none;
}
.balance-card::after {
  content: ""; position: absolute; bottom: -80px; left: -30px;
  width: 240px; height: 240px; background: rgba(255,255,255,0.04);
  border-radius: 50%; pointer-events: none;
}
.balance-card > * { position: relative; z-index: 1; }
.balance-label { font-size: 15px; opacity: 0.75; font-weight: 500; letter-spacing: 0.5px; text-transform: uppercase; }
.balance-amount { font-size: 64px; font-weight: 800; letter-spacing: -2.5px; margin: 12px 0; font-variant-numeric: tabular-nums; }
.balance-hint { font-size: 14px; opacity: 0.6; line-height: 1.7; }
.grid2 {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
  padding: 0 40px 48px;
}
.card {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px;
  transition: var(--transition);
}
.card:hover { box-shadow: var(--shadow-md); }
.card-head {
  font-size: 13px; font-weight: 700; color: var(--text-muted);
  margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border-light);
  text-transform: uppercase; letter-spacing: 1.5px;
}
.form-row { display: flex; gap: 14px; align-items: flex-end; }
.form-row .field { flex: 1; margin-bottom: 0; }

/* ── Result ── */
.result {
  margin-top: 14px; padding: 14px 16px; background: var(--border-light);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-family: "SF Mono", "Monaco", "Cascadia Code", monospace; font-size: 12px;
  max-height: 240px; overflow-y: auto; white-space: pre-wrap;
  color: var(--text-secondary); display: none; word-break: break-all; line-height: 1.6;
}
.result.show { display: block; }
.result.ok { border-color: rgba(5,150,105,0.2); background: var(--green-bg); color: #047857; }
.result.err { border-color: rgba(220,38,38,0.15); background: var(--red-bg); color: #991b1b; }

/* ── Modal ── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(15,23,42,0.45); z-index: 200;
  backdrop-filter: blur(4px); display: none; align-items: center; justify-content: center;
  animation: fadeIn 0.2s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal-overlay.show { display: flex; }
.modal {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl);
  padding: 40px; max-width: 500px; width: 92%; max-height: 82vh; overflow-y: auto;
  box-shadow: var(--shadow-xl); animation: modalSlideIn 0.25s ease;
}
@keyframes modalSlideIn { from { opacity: 0; transform: translateY(16px) scale(0.97); } to { opacity: 1; transform: translateY(0) scale(1); } }
.modal h3 { font-size: 24px; font-weight: 800; margin-bottom: 6px; letter-spacing: -0.4px; }
.modal .desc { color: var(--text-secondary); font-size: 14px; margin-bottom: 24px; line-height: 1.7; }
.modal .modal-meta { color: var(--text-secondary); font-size: 13px; margin-bottom: 18px; }
.modal .modal-meta strong { color: var(--text); font-weight: 600; }
.modal-meta > div { margin-bottom: 5px; }
.modal-footer { display: flex; gap: 12px; margin-top: 28px; }

/* ── Developer Page ── */
.page-padded { padding: 44px 40px; }
.dev-hero {
  text-align: center; padding: 56px 44px; background: #fff;
  border: 1px solid var(--border); border-radius: var(--radius-xl);
  margin-bottom: 32px; box-shadow: var(--shadow-sm);
}
.dev-avatar {
  width: 88px; height: 88px; border-radius: 24px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff; font-size: 38px; font-weight: 800;
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 20px; box-shadow: 0 8px 24px rgba(99,102,241,0.25);
}
.dev-name { font-size: 26px; font-weight: 800; letter-spacing: -0.3px; }
.dev-email { font-size: 14px; color: var(--text-muted); margin-top: 6px; }
.dev-stats { display: flex; gap: 48px; justify-content: center; margin-top: 28px; }
.dev-stat { text-align: center; }
.dev-stat .num { font-size: 32px; font-weight: 800; color: var(--primary); letter-spacing: -0.5px; }
.dev-stat .lbl { font-size: 13px; color: var(--text-muted); margin-top: 4px; font-weight: 500; }
.back-link {
  display: inline-flex; align-items: center; gap: 8px; font-size: 14px;
  color: var(--text-muted); cursor: pointer; margin-bottom: 24px; font-weight: 500;
  transition: var(--transition);
}
.back-link:hover { color: var(--text); }

/* ── CTA ── */
.cta-section {
  background: linear-gradient(135deg, #eef2ff 0%, #f5f3ff 50%, #ede9fe 100%);
  border: 1px solid rgba(79,70,229,0.08); border-radius: var(--radius-xl);
  padding: 64px 48px; text-align: center; margin: 0 40px 72px;
}
.cta-section h3 { font-size: 28px; font-weight: 800; margin-bottom: 12px; letter-spacing: -0.6px; }
.cta-section p { color: var(--text-secondary); font-size: 17px; margin-bottom: 28px; }

/* ── Footer ── */
.footer {
  text-align: center; padding: 32px 40px; border-top: 1px solid var(--border);
  color: var(--text-muted); font-size: 13px; background: #fff; font-weight: 500;
}

/* ── MCP URL ── */
.mcp-url {
  background: var(--border-light); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px 18px;
  font-family: "SF Mono", "Monaco", "Cascadia Code", monospace;
  font-size: 13px; color: var(--primary); word-break: break-all; margin: 8px 0;
  transition: var(--transition);
}
.mcp-url:hover { border-color: #a5b4fc; background: #f8faff; }

/* ── Create Skill Page ── */
.create-hero {
  text-align: center; padding: 80px 40px 64px;
  background: radial-gradient(ellipse 70% 50% at 50% -5%, #eef2ff 0%, transparent 60%),
              linear-gradient(180deg, #fafaff 0%, #f8fafc 100%);
  position: relative; overflow: hidden;
}
.create-hero::before {
  content: ""; position: absolute; top: -150px; left: -100px;
  width: 380px; height: 380px; background: radial-gradient(circle, rgba(139,92,246,0.06) 0%, transparent 70%);
  border-radius: 50%; pointer-events: none;
}
.create-hero > * { position: relative; z-index: 1; }
.create-hero .badge {
  display: inline-block; padding: 8px 20px; border-radius: 24px;
  font-size: 14px; font-weight: 600; background: var(--primary-light); color: var(--primary);
  margin-bottom: 24px; border: 1px solid rgba(79,70,229,0.1);
}
.create-hero h1 { font-size: 44px; font-weight: 800; letter-spacing: -1.8px; margin-bottom: 18px; line-height: 1.2; }
.create-hero h1 em { font-style: normal; background: linear-gradient(135deg, #6366f1, #8b5cf6); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.create-hero p { color: var(--text-secondary); font-size: 17px; max-width: 620px; margin: 0 auto; line-height: 1.75; }

/* Steps */
.steps-section { padding: 0 40px 64px; }
.steps {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  max-width: 980px; margin: 0 auto;
}
.step-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 40px 32px; text-align: center; position: relative; transition: var(--transition);
}
.step-card:hover { box-shadow: var(--shadow-xl); transform: translateY(-3px); }
.step-num {
  width: 48px; height: 48px; border-radius: 14px; display: inline-flex;
  align-items: center; justify-content: center; font-size: 22px; font-weight: 800;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #eef2ff, #e0e7ff); color: var(--primary);
}
.step-card h4 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.step-card p { color: var(--text-secondary); font-size: 14px; line-height: 1.7; }

/* Upload Form */
.upload-section { padding: 0 40px 72px; }
.upload-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-xl);
  padding: 44px 40px; max-width: 720px; margin: 0 auto; box-shadow: var(--shadow);
}
.upload-card h3 { font-size: 22px; font-weight: 800; margin-bottom: 28px; letter-spacing: -0.3px; }
.textarea {
  width: 100%; padding: 13px 16px; background: #fff;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text); font-size: 14px; outline: none; resize: vertical;
  font-family: inherit; min-height: 130px; transition: var(--transition); line-height: 1.6;
}
.textarea:hover { border-color: #cbd5e1; }
.textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,0.1); }
.tag-input-wrap {
  display: flex; flex-wrap: wrap; gap: 6px; padding: 9px 14px; background: #fff;
  border: 1px solid var(--border); border-radius: var(--radius-sm); min-height: 46px;
  align-items: center; cursor: text; transition: var(--transition);
}
.tag-input-wrap:hover { border-color: #cbd5e1; }
.tag-input-wrap:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,0.1); }
.tag-pill {
  display: inline-flex; align-items: center; gap: 5px; padding: 4px 12px;
  background: var(--primary-light); color: var(--primary); border-radius: 6px;
  font-size: 13px; font-weight: 500;
}
.tag-pill .remove { cursor: pointer; font-size: 15px; line-height: 1; opacity: 0.5; transition: var(--transition); }
.tag-pill .remove:hover { opacity: 1; }
.tag-input { border: none; outline: none; font-size: 14px; font-family: inherit; flex: 1; min-width: 100px; color: var(--text); }
.upload-result { margin-top: 18px; padding: 16px 20px; border-radius: var(--radius-sm); display: none; font-size: 14px; }
.upload-result.show { display: block; }
.upload-result.ok { background: var(--green-bg); color: #047857; border: 1px solid rgba(5,150,105,0.15); }
.upload-result.err { background: var(--red-bg); color: #991b1b; border: 1px solid rgba(220,38,38,0.15); }

/* Become Developer CTA */
.become-section {
  background: linear-gradient(135deg, #eef2ff 0%, #f5f3ff 50%, #ede9fe 100%);
  border: 1px solid rgba(79,70,229,0.08); border-radius: var(--radius-xl);
  padding: 64px 48px; text-align: center; margin: 0 40px 72px;
}
.become-section h3 { font-size: 28px; font-weight: 800; margin-bottom: 12px; letter-spacing: -0.6px; }
.become-section p { color: var(--text-secondary); font-size: 17px; margin-bottom: 28px; }

/* ── Settings Page ── */
.settings-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
}
.settings-card {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 36px; transition: var(--transition);
}
.settings-card:hover { box-shadow: var(--shadow-md); }
.settings-card-icon {
  width: 48px; height: 48px; border-radius: 14px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 16px; background: var(--border-light);
}
.settings-card-title { font-size: 19px; font-weight: 800; margin-bottom: 6px; letter-spacing: -0.3px; }
.settings-card-desc { color: var(--text-muted); font-size: 14px; margin-bottom: 24px; }
.settings-card .field { margin-bottom: 16px; }
.settings-card .btn-block { margin-top: 6px; }
.settings-card .result { margin-top: 12px; }

/* Toggle Switch */
.toggle-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; border-bottom: 1px solid var(--border-light);
}
.toggle-row:last-of-type { border-bottom: none; }
.toggle-label { flex: 1; }
.toggle-title { font-size: 15px; font-weight: 600; }
.toggle-desc { font-size: 13px; color: var(--text-muted); margin-top: 3px; }
.toggle-switch { position: relative; display: inline-block; width: 46px; height: 26px; flex-shrink: 0; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; cursor: pointer; inset: 0;
  background: #d1d5db; border-radius: 26px; transition: var(--transition);
}
.toggle-slider::before {
  content: ""; position: absolute; left: 3px; bottom: 3px;
  width: 20px; height: 20px; background: #fff; border-radius: 50%;
  transition: var(--transition); box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.toggle-switch input:checked + .toggle-slider { background: var(--primary); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(20px); }

/* Usage Stats */
.usage-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 12px; }
.usage-stat {
  text-align: center; padding: 20px 12px; background: var(--border-light);
  border-radius: var(--radius); transition: var(--transition);
}
.usage-stat:hover { background: var(--primary-light); }
.usage-num { font-size: 26px; font-weight: 800; color: var(--primary); letter-spacing: -0.5px; font-variant-numeric: tabular-nums; }
.usage-lbl { font-size: 12px; color: var(--text-muted); margin-top: 6px; font-weight: 500; }

/* Admin Dashboard */
.admin-stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.admin-stat-card {
  text-align: center;
  padding: 24px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  transition: var(--transition);
}
.admin-stat-card:hover {
  border-color: var(--primary);
  box-shadow: 0 2px 12px rgba(99,102,241,0.08);
}
.admin-stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
  font-variant-numeric: tabular-nums;
}
.admin-stat-lbl {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 6px;
  font-weight: 500;
}
@media (max-width: 768px) {
  .admin-stat-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .admin-stat-grid { grid-template-columns: 1fr; }
}

/* Admin Login Tabs */
.admin-login-tabs {
  display: flex; gap: 0; margin-bottom: 18px;
  border-bottom: 2px solid var(--border);
}
.admin-login-tab {
  flex: 1; text-align: center; padding: 10px 0;
  background: none; border: none; cursor: pointer;
  font-size: 14px; font-weight: 500; color: var(--text-muted);
  border-bottom: 2px solid transparent; margin-bottom: -2px;
  transition: all 0.2s;
}
.admin-login-tab:hover { color: var(--text); }
.admin-login-tab.active {
  color: var(--primary); border-bottom-color: var(--primary); font-weight: 600;
}

/* Admin Tabbed Layout */
.admin-layout { display: flex; min-height: calc(100vh - 200px); }
.admin-sidebar {
  width: 170px; min-width: 170px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 12px 0;
}
.admin-sidebar-title {
  font-size: 13px; font-weight: 700; color: var(--text-muted);
  padding: 8px 16px 16px; text-transform: uppercase; letter-spacing: 0.5px;
}
.admin-tab {
  display: block; width: 100%; text-align: left;
  padding: 10px 16px; border: none; background: none;
  font-size: 13px; color: var(--text-secondary); cursor: pointer;
  transition: var(--transition);
}
.admin-tab:hover { background: var(--bg-hover); color: var(--text-primary); }
.admin-tab.active {
  background: var(--primary-light); color: var(--primary);
  font-weight: 600; border-right: 3px solid var(--primary);
}
.admin-main { flex: 1; padding: 20px 24px; overflow-y: auto; }
.admin-panel { display: none; }
.admin-panel.active { display: block; }
.admin-pager {
  display: flex; justify-content: center; align-items: center;
  gap: 8px; padding: 12px 0;
}
.admin-pager button {
  padding: 4px 12px; border: 1px solid var(--border-color);
  border-radius: var(--radius); background: var(--bg-primary);
  font-size: 13px; cursor: pointer;
}
.admin-pager button:hover { border-color: var(--primary); color: var(--primary); }
.admin-pager button:disabled { opacity: 0.4; cursor: default; }
.admin-pager span { font-size: 13px; color: var(--text-muted); }

@media (max-width: 768px) {
  .admin-layout { flex-direction: column; }
  .admin-sidebar { width: 100%; min-width: 0; display: flex; overflow-x: auto; padding: 8px; border-right: none; border-bottom: 1px solid var(--border-color); }
  .admin-sidebar-title { display: none; }
  .admin-tab { white-space: nowrap; width: auto; border-right: none; }
  .admin-tab.active { border-right: none; border-bottom: 3px solid var(--primary); }
}

/* Danger Zone */
.danger-card {
  border-color: rgba(220,38,38,0.12);
  background: #fff;
}
.danger-card .settings-card-icon { background: var(--red-light); }
.danger-card .settings-card-title { color: var(--red); }
.btn-danger {
  background: var(--red); color: #fff; border: none;
  box-shadow: 0 2px 8px rgba(220,38,38,0.2);
}
.btn-danger:hover { background: #b91c1c; box-shadow: 0 4px 14px rgba(220,38,38,0.3); transform: translateY(-1px); }
.btn-outline-danger {
  background: #fff; color: var(--red); border: 1px solid rgba(220,38,38,0.25);
}
.btn-outline-danger:hover { background: var(--red-bg); border-color: rgba(220,38,38,0.4); }

/* ── Relay Card extras ── */
.card-hd { font-size: 15px; font-weight: 700; margin-bottom: 16px; letter-spacing: -0.2px; }
.card-bd { }
.fg { margin-bottom: 12px; }
.fg label { display: block; font-size: 12px; color: var(--text-muted); margin-bottom: 4px; font-weight: 600; }
.fg .input, .fg select { width: 100%; }

/* ── Skills Wrap ── */
.skills-wrap { background: var(--border-light); padding: 52px 0 36px; }
.skills-wrap .skill-grid { padding-top: 8px; }
.skills-wrap .section-header { padding-top: 0; }

/* ── Billing Page ── */
.billing-tabs { display: flex; gap: 8px; margin-bottom: 28px; }
.bill-tab {
  padding: 10px 24px; border-radius: 24px; font-size: 14px; cursor: pointer;
  background: #fff; border: 1px solid var(--border); color: var(--text-secondary);
  transition: var(--transition); font-weight: 600; font-family: inherit;
}
.bill-tab:hover { border-color: #a5b4fc; color: var(--primary); }
.bill-tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.billing-table-wrap { overflow-x: auto; }
.billing-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.billing-table th {
  text-align: left; padding: 12px 16px; font-size: 12px; font-weight: 700;
  color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px;
  border-bottom: 2px solid var(--border); white-space: nowrap;
}
.billing-table td {
  padding: 14px 16px; border-bottom: 1px solid var(--border-light);
  color: var(--text-secondary); white-space: nowrap;
}
.billing-table tr:hover td { background: var(--border-light); }
.billing-table .amount-income { color: var(--green); font-weight: 700; }
.billing-table .amount-expense { color: var(--red); font-weight: 600; }
.billing-table .empty-row { text-align: center; color: var(--text-muted); padding: 40px 16px; }

/* ── Code Block ── */
.code-block {
  background: #1e293b; border-radius: var(--radius); overflow: hidden; margin: 0;
}
.code-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 18px; background: #334155; color: #94a3b8; font-size: 12px; font-weight: 600;
}
.code-header .copy-btn { background: #475569; font-size: 11px; padding: 4px 12px; }
.code-header .copy-btn:hover { background: #64748b; }
.code-header .copy-btn.copied { background: var(--green); }
.code-block pre {
  margin: 0; padding: 24px; overflow-x: auto;
  color: #e2e8f0; font-family: "SF Mono","Monaco","Cascadia Code",monospace;
  font-size: 13px; line-height: 1.7;
}
.code-block code { color: inherit; background: none; padding: 0; }

/* ── Developer Create Page ── */
.mcp-address-big {
  background: var(--border-light); border: 2px dashed #a5b4fc;
  border-radius: var(--radius); padding: 20px 28px;
  font-family: "SF Mono","Monaco","Cascadia Code",monospace;
  font-size: 16px; color: var(--primary); word-break: break-all;
  transition: var(--transition); cursor: pointer; user-select: all;
}
.mcp-address-big:hover { border-color: var(--primary); background: #f8faff; }
.faq-section { max-width: 780px; margin: 0 auto; padding: 0 40px 72px; }
.faq-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 32px; margin-bottom: 14px; transition: var(--transition);
}
.faq-card:hover { box-shadow: var(--shadow-sm); border-color: #cbd5e1; }
.faq-q { font-size: 16px; font-weight: 700; margin-bottom: 10px; color: var(--text); letter-spacing: -0.2px; }
.faq-q::before { content: "Q: "; color: var(--primary); }
.faq-a { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }
.faq-a::before { content: "A: "; color: var(--green); font-weight: 700; }

/* ── Usage Grid (Skill Integration page) ── */
.usage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 20px; padding: 0 40px 56px;
}
.usage-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px; transition: var(--transition); display: flex;
  flex-direction: column; position: relative; overflow: hidden;
}
.usage-card:hover { box-shadow: var(--shadow-lg); border-color: var(--primary); transform: translateY(-2px); }
.usage-card-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 12px; }
.usage-card-name { font-size: 17px; font-weight: 700; color: var(--text); letter-spacing: -0.2px; }
.usage-card-meta { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.usage-card-desc { color: var(--text-secondary); font-size: 13px; line-height: 1.6; margin-bottom: 16px; }
.usage-card-section { margin-bottom: 14px; }
.usage-card-section .label { font-size: 11px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }
.usage-address {
  display: flex; align-items: center; gap: 8px;
  background: var(--border-light); border: 1px solid var(--border);
  border-radius: 6px; padding: 10px 14px; font-family: "SF Mono","Monaco","Cascadia Code",monospace;
  font-size: 12px; color: var(--primary); transition: var(--transition); word-break: break-all;
}
.usage-address:hover { border-color: #a5b4fc; background: #f8faff; }
.usage-address .addr-text { flex: 1; min-width: 0; }
.copy-btn {
  flex-shrink: 0; padding: 5px 14px; border-radius: 6px; font-size: 12px; font-weight: 600;
  cursor: pointer; border: none; background: var(--primary); color: #fff;
  transition: var(--transition); font-family: inherit; white-space: nowrap;
}
.copy-btn:hover { background: var(--primary-hover); }
.copy-btn.copied { background: var(--green); }
.usage-example {
  background: var(--border-light); border-radius: 6px; padding: 10px 14px;
  font-size: 12px; color: var(--text-secondary); line-height: 1.6; max-height: 72px; overflow-y: auto;
}
.usage-card-footer { display: flex; justify-content: space-between; align-items: center; padding-top: 16px; border-top: 1px solid var(--border-light); margin-top: auto; }
.usage-card-footer .skill-price { font-size: 22px; }

/* ── Topnav Variants ── */
.topnav-simple { justify-content: space-between; }
.topnav-simple .topnav-nav { flex: 1; text-align: center; justify-content: center; }

/* ── User Menu ── */
.user-menu { display: flex; align-items: center; gap: 10px; position: relative; }
.user-dropdown-toggle {
  display: flex; align-items: center; gap: 6px; cursor: pointer;
  padding: 6px 10px; border-radius: var(--radius-sm); transition: var(--transition);
  user-select: none;
}
.user-dropdown-toggle:hover { background: var(--border-light); }
.dropdown-arrow { font-size: 10px; color: var(--text-muted); transition: var(--transition); }
.user-dropdown-toggle.open .dropdown-arrow { transform: rotate(180deg); }
.user-dropdown {
  position: absolute; top: 100%; right: 0; margin-top: 8px;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); min-width: 180px; z-index: 150;
  padding: 6px; animation: fadeSlideIn 0.15s ease;
}
.user-dropdown-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; font-size: 14px; color: var(--text-secondary);
  cursor: pointer; border-radius: var(--radius-sm); transition: var(--transition);
  font-weight: 500;
}
.user-dropdown-item:hover { background: var(--border-light); color: var(--text); }
.user-dropdown-divider { height: 1px; background: var(--border); margin: 4px 8px; }

/* ── Panel Layout ── */
.panel-layout {
  display: flex; min-height: calc(100vh - 64px);
}
.panel-sidebar {
  width: 240px; flex-shrink: 0; background: #fff;
  border-right: 1px solid var(--border); padding: 20px 0;
  display: flex; flex-direction: column; position: sticky; top: 64px;
  height: calc(100vh - 64px); overflow-y: auto;
}
.panel-sidebar-header {
  font-size: 12px; font-weight: 700; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 1px; padding: 8px 20px 18px;
}
.panel-sidebar-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 20px; font-size: 14px; color: var(--text-secondary);
  cursor: pointer; transition: var(--transition); font-weight: 500;
  border-left: 3px solid transparent;
}
.panel-sidebar-item:hover { background: var(--border-light); color: var(--text); }
.panel-sidebar-item.active {
  background: var(--primary-light); color: var(--primary);
  font-weight: 600; border-left-color: var(--primary);
}
.panel-sidebar-icon { font-size: 16px; width: 22px; text-align: center; flex-shrink: 0; }
.panel-sidebar-divider { height: 1px; background: var(--border); margin: 12px 16px; }
.panel-sidebar-back { margin-top: auto; color: var(--text-muted); font-size: 13px; }
.panel-content { flex: 1; min-width: 0; background: var(--bg); }
.panel-content .balance-card { margin: 32px 32px 28px; }
.panel-content .page-padded { padding: 28px 32px; }
.panel-content .section-header { padding: 40px 32px 24px; }
.panel-content .features { padding: 0 32px; }
.panel-content .skill-grid,
.panel-content .model-grid { padding: 0 32px 40px; }
.panel-content .card[style] { margin-left: 32px; margin-right: 32px; }
.panel-content .footer { background: transparent; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .topnav { padding: 0 16px; }
  .topnav-nav { display: none; }
  .hero { padding: 64px 20px 48px; }
  .hero h1 { font-size: 32px; }
  .features-section { padding: 0 16px 48px; }
  .features { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .stats-section { padding: 16px 16px 40px; }
  .skill-grid { grid-template-columns: 1fr; padding: 0 16px 40px; }
  .grid2 { grid-template-columns: 1fr; padding: 0 16px 40px; }
  .balance-card { margin: 28px 16px; padding: 36px 24px; }
  .balance-amount { font-size: 44px; }
  .page-padded { padding: 28px 16px; }
  .section-header { padding: 36px 16px 24px; }
  .cat-bar { padding: 0 16px 24px; }
  .cta-section { margin: 0 16px 40px; padding: 44px 24px; }
  .steps { grid-template-columns: 1fr; }
  .create-hero { padding: 52px 20px 40px; }
  .create-hero h1 { font-size: 32px; }
  .upload-section { padding: 0 16px 48px; }
  .upload-card { padding: 28px 20px; }
  .become-section { margin: 0 16px 40px; padding: 44px 24px; }
  .skills-wrap { padding: 36px 0 20px; }
  .settings-grid { grid-template-columns: 1fr; }
  .usage-grid { grid-template-columns: 1fr; padding: 0 16px 40px; }
  .auth-container { margin: 40px auto 60px; }
  .auth-card { padding: 32px 24px; }
  .dev-hero { padding: 40px 24px; }
  .panel-layout { flex-direction: column; }
  .panel-sidebar {
    position: static; width: 100%; height: auto; flex-direction: row;
    overflow-x: auto; border-right: none; border-bottom: 1px solid var(--border);
    padding: 8px 12px; gap: 4px; flex-wrap: wrap;
  }
  .panel-sidebar-header { display: none; }
  .panel-sidebar-item {
    padding: 8px 14px; font-size: 13px; border-left: none;
    border-bottom: 2px solid transparent; white-space: nowrap;
  }
  .panel-sidebar-item.active { border-left-color: transparent; border-bottom-color: var(--primary); }
  .panel-sidebar-divider { display: none; }
  .panel-sidebar-back { margin-top: 0; }
  .panel-content .balance-card { margin: 20px 12px; }
  .panel-content .page-padded { padding: 20px 12px; }
  .panel-content .section-header { padding: 24px 12px 20px; }
  .panel-content .features { padding: 0 12px; }
  .panel-content .skill-grid { padding: 0 12px 32px; }
  .user-dropdown { right: -60px; }
}


/* ═══════════════════════════════════════════════════════════════
   Dark Theme
   ═══════════════════════════════════════════════════════════════ */

[data-theme="dark"] {
  --primary: #818cf8; --primary-hover: #6366f1; --primary-light: #1e1b4b;
  --primary-50: #1e1b4b; --primary-100: #312e81; --primary-600: #a78bfa;
  --text: #f1f5f9; --text-secondary: #94a3b8; --text-muted: #64748b;
  --bg: #0f172a; --surface: #1e293b; --border: #334155; --border-light: #1e293b;
  --green: #34d399; --green-light: #064e3b; --green-bg: #022c22;
  --red: #f87171; --red-light: #450a0a; --red-bg: #1c0909;
  --amber: #fbbf24; --amber-light: #451a03; --amber-bg: #1c1006;
  --blue: #60a5fa; --blue-light: #172554;
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow: 0 1px 3px rgba(0,0,0,0.5);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 28px rgba(0,0,0,0.5);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.6);
}

[data-theme="dark"] body {
  background: var(--bg); color: var(--text);
}

[data-theme="dark"] .topnav {
  background: rgba(15,23,42,0.9); border-bottom-color: var(--border);
}

[data-theme="dark"] .topnav-brand { color: var(--text); }
[data-theme="dark"] .topnav-brand .dot {
  background: linear-gradient(135deg, #818cf8, #a78bfa);
}

[data-theme="dark"] .nav-link { color: var(--text-muted); }
[data-theme="dark"] .nav-link:hover { color: var(--text); background: rgba(255,255,255,0.05); }
[data-theme="dark"] .nav-link.active { color: var(--primary); background: var(--primary-light); }

[data-theme="dark"] .topnav-balance { background: var(--primary-light); color: var(--primary); }
[data-theme="dark"] .topnav-balance:hover { background: #312e81; }

[data-theme="dark"] .btn-secondary {
  background: var(--surface); color: var(--text); border-color: var(--border);
}
[data-theme="dark"] .btn-secondary:hover { background: var(--border-light); border-color: #475569; }
[data-theme="dark"] .btn-ghost { color: var(--text-muted); }
[data-theme="dark"] .btn-ghost:hover { background: rgba(255,255,255,0.05); }

[data-theme="dark"] .hero {
  background: radial-gradient(ellipse 80% 60% at 50% -10%, #1e1b4b 0%, transparent 60%),
              linear-gradient(180deg, #0f172a 0%, #0f172a 100%);
}
[data-theme="dark"] .hero::before {
  background: radial-gradient(circle, rgba(99,102,241,0.15) 0%, transparent 70%);
}
[data-theme="dark"] .hero::after {
  background: radial-gradient(circle, rgba(139,92,246,0.1) 0%, transparent 70%);
}

[data-theme="dark"] .feature-card,
[data-theme="dark"] .model-card,
[data-theme="dark"] .skill-card,
[data-theme="dark"] .step-card,
[data-theme="dark"] .card,
[data-theme="dark"] .settings-card,
[data-theme="dark"] .upload-card,
[data-theme="dark"] .dev-hero {
  background: var(--surface); border-color: var(--border);
}
[data-theme="dark"] .feature-card:hover,
[data-theme="dark"] .model-card:hover,
[data-theme="dark"] .skill-card:hover,
[data-theme="dark"] .step-card:hover {
  border-color: var(--primary); box-shadow: var(--shadow-xl);
}

[data-theme="dark"] .cat-chip { background: var(--surface); color: var(--text-muted); border-color: var(--border); }
[data-theme="dark"] .cat-chip:hover { background: var(--primary-light); color: var(--primary); }
[data-theme="dark"] .cat-chip.active { background: var(--primary); color: #fff; }

[data-theme="dark"] .auth-card { background: var(--surface); border-color: var(--border); }
[data-theme="dark"] .input, [data-theme="dark"] select, [data-theme="dark"] .textarea {
  background: #0f172a; border-color: var(--border); color: var(--text);
}
[data-theme="dark"] .input:focus, [data-theme="dark"] select:focus, [data-theme="dark"] .textarea:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99,102,241,0.2);
}
[data-theme="dark"] .input::placeholder { color: #475569; }

[data-theme="dark"] .tab-row { background: rgba(255,255,255,0.05); }
[data-theme="dark"] .tab.active { background: var(--surface); color: var(--text); }
[data-theme="dark"] .login-subtab.active { background: var(--primary) !important; color: #fff !important; }

[data-theme="dark"] .cta-section {
  background: linear-gradient(135deg, #1e1b4b 0%, #1e293b 100%);
  border-color: rgba(99,102,241,0.15);
}
[data-theme="dark"] .become-section {
  background: linear-gradient(135deg, #1e1b4b 0%, #1e293b 100%);
  border-color: rgba(99,102,241,0.15);
}

[data-theme="dark"] .footer { background: var(--bg); border-top-color: var(--border); }

[data-theme="dark"] .result { background: rgba(0,0,0,0.3); border-color: var(--border); color: var(--text-secondary); }
[data-theme="dark"] .result.ok { background: var(--green-bg); border-color: rgba(52,211,153,0.15); color: var(--green); }
[data-theme="dark"] .result.err { background: var(--red-bg); border-color: rgba(248,113,113,0.15); color: var(--red); }

[data-theme="dark"] .modal-overlay { background: rgba(0,0,0,0.6); }
[data-theme="dark"] .modal { background: var(--surface); border-color: var(--border); }

[data-theme="dark"] .tag { background: rgba(255,255,255,0.05); color: var(--text-muted); }
[data-theme="dark"] .bill-tab { background: var(--surface); border-color: var(--border); color: var(--text-muted); }
[data-theme="dark"] .bill-tab.active { background: var(--primary); color: #fff; }

[data-theme="dark"] .billing-table th { border-bottom-color: var(--border); }
[data-theme="dark"] .billing-table td { border-bottom-color: rgba(255,255,255,0.04); }
[data-theme="dark"] .billing-table tr:hover td { background: rgba(255,255,255,0.03); }

[data-theme="dark"] .tag-input-wrap { background: #0f172a; border-color: var(--border); }
[data-theme="dark"] .tag-pill { background: var(--primary-light); color: var(--primary); }

[data-theme="dark"] .mcp-url { background: #0f172a; border-color: var(--border); color: var(--primary); }
[data-theme="dark"] .mcp-url:hover { border-color: var(--primary); background: #1e1b4b; }

[data-theme="dark"] .step-num { background: var(--primary-light); }
[data-theme="dark"] .feature-icon.blue { background: var(--primary-light); color: var(--primary); }

[data-theme="dark"] .usage-stat { background: rgba(255,255,255,0.03); }
[data-theme="dark"] .usage-stat:hover { background: var(--primary-light); }

[data-theme="dark"] .btn-outline-danger { background: var(--surface); color: var(--red); border-color: rgba(248,113,113,0.25); }
[data-theme="dark"] .danger-card { background: var(--surface); }

[data-theme="dark"] .toggle-slider { background: #475569; }

[data-theme="dark"] .panel-sidebar {
  background: var(--surface); border-color: var(--border);
}
[data-theme="dark"] .panel-sidebar-item { color: var(--text-muted); }
[data-theme="dark"] .panel-sidebar-item:hover { color: var(--text); background: rgba(255,255,255,0.03); }
[data-theme="dark"] .panel-sidebar-item.active { color: var(--primary); background: var(--primary-light); }

[data-theme="dark"] .balance-card {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 40%, #4f46e5 100%);
}

[data-theme="dark"] .create-hero {
  background: radial-gradient(ellipse 70% 50% at 50% -5%, #1e1b4b 0%, transparent 60%),
              linear-gradient(180deg, #0f172a 0%, #0f172a 100%);
}

/* ── Theme Toggle ── */
.theme-toggle {
  width: 38px; height: 38px; border-radius: var(--radius-sm);
  background: var(--border-light); border: 1px solid var(--border);
  cursor: pointer; font-size: 18px; display: flex; align-items: center;
  justify-content: center; transition: var(--transition);
  color: var(--text-secondary); flex-shrink: 0;
}
.theme-toggle:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }


/* ── Landing Page Stats ── */
.stats-section {
  padding: 32px 40px 64px;
}
.stats-row {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  max-width: 980px; margin: 0 auto;
}
.stat-card {
  text-align: center; padding: 32px 20px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); transition: var(--transition);
}
.stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.stat-number {
  font-size: 36px; font-weight: 800; letter-spacing: -1px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; margin-bottom: 6px;
}
.stat-label { font-size: 14px; color: var(--text-muted); font-weight: 500; }

/* Hero blob animation */
@keyframes float {
  0%,100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}
.hero-blob {
  animation: float 8s ease-in-out infinite;
}


/* ── Skill Academy ── */
.academy-section {
  max-width: 800px; margin: 0 auto 48px;
}
.academy-section h3 {
  font-size: 24px; font-weight: 800; margin-bottom: 20px;
  padding-bottom: 12px; border-bottom: 2px solid var(--border);
  letter-spacing: -0.4px;
}
.academy-body { color: var(--text-secondary); font-size: 15px; line-height: 1.85; }
.academy-body p { margin-bottom: 14px; }

.academy-steps { display: flex; flex-direction: column; gap: 20px; margin: 20px 0; }
.academy-step {
  display: flex; gap: 20px; padding: 24px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); transition: var(--transition);
}
.academy-step:hover { box-shadow: var(--shadow-md); }
.academy-step-num {
  width: 44px; height: 44px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 800; flex-shrink: 0;
  background: linear-gradient(135deg, #eef2ff, #e0e7ff); color: var(--primary);
}
.academy-step strong { font-size: 16px; display: block; margin-bottom: 4px; }
.academy-step p { font-size: 14px; color: var(--text-muted); margin: 0; }

.academy-example {
  margin-bottom: 32px; border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: var(--transition);
}
.academy-example:hover { box-shadow: var(--shadow-md); }
.academy-example-header {
  display: flex; gap: 18px; padding: 24px 28px;
  background: var(--border-light); align-items: center;
}
.academy-example-icon {
  width: 52px; height: 52px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; background: var(--surface); flex-shrink: 0;
}
.academy-example-header h4 { font-size: 18px; font-weight: 700; margin-bottom: 2px; }
.academy-example-header p { font-size: 14px; color: var(--text-muted); margin: 0; }
.academy-example-detail { padding: 24px 28px; }

.academy-code-block {
  background: #1e293b; border-radius: var(--radius-sm);
  overflow: hidden;
}
.academy-code-label {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1px; color: #64748b; padding: 12px 18px 8px;
}
.academy-code-block pre {
  padding: 0 18px 18px; margin: 0; color: #e2e8f0;
  font-family: "SF Mono", "Monaco", "Cascadia Code", monospace;
  font-size: 13px; line-height: 1.8; overflow-x: auto;
}

.revenue-cards {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
  margin: 20px 0;
}
.revenue-card {
  text-align: center; padding: 32px 20px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); transition: var(--transition);
}
.revenue-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.revenue-card-num {
  font-size: 36px; font-weight: 800; letter-spacing: -1px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; margin-bottom: 6px;
}
.revenue-card-label {
  font-size: 14px; font-weight: 700; margin-bottom: 10px;
}
.revenue-card p { font-size: 13px; color: var(--text-muted); margin: 0; }

[data-theme="dark"] .academy-step-num { background: var(--primary-light); }
[data-theme="dark"] .academy-example-header { background: rgba(255,255,255,0.02); }
[data-theme="dark"] .academy-example-icon { background: var(--surface); }
[data-theme="dark"] .academy-code-block { background: #0f172a; }

@media (max-width: 768px) {
  .revenue-cards { grid-template-columns: 1fr; }
}

/* ── Skill Detail Page ──────────────────────────────────────────────────── */

.skill-detail { max-width: 1100px; margin: 0 auto; }

.skill-detail-loading {
  text-align: center; padding: 80px; color: var(--text-muted); font-size: 16px;
}

.skill-detail-layout {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start;
}

/* ── Image Carousel ── */

.skill-detail-gallery {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  background: var(--border-light); aspect-ratio: 4/3;
}
.skill-detail-gallery .carousel-track {
  display: flex; height: 100%; transition: transform 0.4s ease;
}
.skill-detail-gallery .carousel-slide {
  min-width: 100%; height: 100%;
}
.skill-detail-gallery .carousel-slide img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.skill-detail-gallery .carousel-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 40px; height: 40px; border-radius: 50%; border: none;
  background: rgba(0,0,0,0.45); color: #fff; font-size: 20px;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background 0.2s; z-index: 2;
}
.skill-detail-gallery .carousel-btn:hover { background: rgba(0,0,0,0.65); }
.skill-detail-gallery .carousel-prev { left: 12px; }
.skill-detail-gallery .carousel-next { right: 12px; }
.skill-detail-gallery .carousel-dots {
  position: absolute; bottom: 12px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 8px; z-index: 2;
}
.skill-detail-gallery .carousel-dot {
  width: 8px; height: 8px; border-radius: 50%; border: none;
  background: rgba(255,255,255,0.5); cursor: pointer; padding: 0;
  transition: background 0.2s;
}
.skill-detail-gallery .carousel-dot.active { background: #fff; }

.no-images-placeholder {
  display: flex; align-items: center; justify-content: center;
  height: 100%; color: var(--text-muted); font-size: 15px;
  flex-direction: column; gap: 10px;
}
.no-images-placeholder .no-images-icon { font-size: 48px; opacity: 0.4; }

/* ── Detail Info ── */

.skill-detail-info { display: flex; flex-direction: column; gap: 24px; }

.skill-detail-name {
  font-size: 28px; font-weight: 800; letter-spacing: -0.5px; line-height: 1.3;
}
.skill-detail-meta-row {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
}
.skill-detail-meta-row .badge-source {
  padding: 4px 12px; border-radius: 6px; font-size: 12px; font-weight: 600;
}
.skill-detail-meta-row .badge-source.native {
  background: var(--green-light); color: var(--green);
}
.skill-detail-meta-row .badge-source.imported {
  background: var(--blue-light); color: var(--blue);
}

.skill-detail-price-row {
  display: flex; align-items: baseline; gap: 8px;
  padding: 16px 20px; background: var(--primary-light);
  border-radius: var(--radius); border: 1px solid var(--primary-100);
}
.skill-detail-price {
  font-size: 32px; font-weight: 800; color: var(--primary);
}
.skill-detail-price .unit { font-size: 14px; font-weight: 500; color: var(--text-muted); }
.skill-detail-price-row .badge-free {
  padding: 3px 10px; border-radius: 4px; font-size: 12px; font-weight: 600;
  background: var(--green-light); color: var(--green);
}

.skill-detail-section { }
.skill-detail-section h4 {
  font-size: 15px; font-weight: 700; margin-bottom: 10px;
  padding-bottom: 8px; border-bottom: 2px solid var(--primary-light);
}
.skill-detail-section .content {
  font-size: 14px; line-height: 1.8; color: var(--text-secondary);
  white-space: pre-line;
}

.skill-detail-tags { display: flex; gap: 8px; flex-wrap: wrap; }

.skill-detail-stats {
  display: flex; gap: 24px; padding: 16px 0;
  border-top: 1px solid var(--border);
}
.skill-detail-stat {
  text-align: center;
}
.skill-detail-stat .num {
  font-size: 20px; font-weight: 700; color: var(--text);
}
.skill-detail-stat .lbl {
  font-size: 12px; color: var(--text-muted);
}

[data-theme="dark"] .skill-detail-price-row { background: rgba(99,102,241,0.1); border-color: rgba(99,102,241,0.2); }
[data-theme="dark"] .carousel-btn { background: rgba(255,255,255,0.15); }
[data-theme="dark"] .carousel-btn:hover { background: rgba(255,255,255,0.3); }

@media (max-width: 768px) {
  .skill-detail-layout { grid-template-columns: 1fr; gap: 28px; }
  .skill-detail-name { font-size: 22px; }
  .skill-detail-price { font-size: 26px; }
}

/* ── Developer Portal (技能接入) ─────────────────────────────────────── */

.dev-hero-section {
  text-align: center; padding: 64px 40px 48px; max-width: 760px; margin: 0 auto;
}
.dev-hero-section h1 { font-size: 40px; font-weight: 800; letter-spacing: -1px; margin-bottom: 16px; }
.dev-hero-section h1 em { color: var(--primary); font-style: normal; }
.dev-hero-section p { font-size: 16px; color: var(--text-secondary); line-height: 1.7; }
.dev-hero-section .badge {
  display: inline-block; padding: 6px 18px; border-radius: 20px; font-size: 13px; font-weight: 600;
  background: var(--primary-light); color: var(--primary); margin-bottom: 20px;
}

/* MCP Address Card (dev page — theme-aware) */
.dev-mcp-card {
  padding: 28px 32px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  text-align: center;
  color: var(--text);
}
.dev-mcp-card.highlight {
  border: 2px solid var(--primary);
  background: var(--primary-light);
}
.dev-mcp-label {
  font-size: 13px; font-weight: 700; letter-spacing: 1px;
  color: var(--text-secondary); margin-bottom: 14px;
}
.dev-mcp-row {
  display: flex; align-items: center; gap: 12px; justify-content: center;
  margin-bottom: 12px; flex-wrap: wrap;
}
.dev-mcp-addr {
  font-size: 15px; font-family: "SF Mono", "Monaco", "Cascadia Code", monospace;
  background: var(--bg-primary); padding: 10px 20px; border-radius: var(--radius-sm);
  word-break: break-all; color: var(--text); border: 1px solid var(--border-color);
}
.dev-mcp-hint { font-size: 13px; color: var(--text-muted); }
.dev-mcp-hint code { background: var(--bg-secondary); padding: 2px 8px; border-radius: 4px; color: var(--text); }
.dev-mcp-hint a { color: var(--primary); }
.dev-mcp-hint strong { color: var(--text); }

/* MCP Connect Card (market page — theme-aware) */
.mcp-connect-card {
  max-width: 700px; margin: 0 auto 40px; padding: 24px 28px;
  background: var(--bg-secondary); border: 1px solid var(--border-color);
  border-radius: var(--radius-lg); text-align: center;
}
.mcp-connect-label {
  font-size: 13px; font-weight: 700; color: var(--text-secondary);
  letter-spacing: 1px; margin-bottom: 12px;
}
.mcp-connect-row {
  display: flex; align-items: center; gap: 12px; justify-content: center;
  margin-bottom: 10px; flex-wrap: wrap;
}
.mcp-connect-addr {
  font-size: 15px; font-family: "SF Mono", "Monaco", "Cascadia Code", monospace;
  background: var(--bg-primary); padding: 10px 18px; border-radius: var(--radius-sm);
  word-break: break-all; color: var(--text); border: 1px solid var(--border-color);
}
.mcp-connect-hint {
  font-size: 13px; color: var(--text-muted);
}
.mcp-connect-hint code { background: var(--bg-secondary); padding: 2px 8px; border-radius: 4px; color: var(--text); }

/* Sections */
.dev-section { margin-bottom: 48px; }
.dev-section h3 { font-size: 22px; font-weight: 800; margin-bottom: 8px; }
.dev-section > p { font-size: 14px; color: var(--text-muted); margin-bottom: 24px; }

/* Agent Tools Grid */
.dev-agent-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}
.dev-agent-card {
  padding: 24px 20px; text-align: center;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); transition: var(--transition);
}
.dev-agent-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.dev-agent-icon { font-size: 32px; margin-bottom: 10px; }
.dev-agent-name { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.dev-agent-desc { font-size: 12px; color: var(--text-muted); }

/* Interaction Example Cards */
.dev-interaction-cards { display: flex; flex-direction: column; gap: 16px; }
.dev-qa-card {
  padding: 24px; border-radius: var(--radius); border: 1px solid var(--border);
  background: var(--surface);
}
.dev-qa-q {
  font-size: 15px; font-weight: 700; color: var(--primary);
  margin-bottom: 8px; padding-left: 16px; border-left: 3px solid var(--primary);
}
.dev-qa-divider {
  font-size: 12px; color: var(--text-muted); margin-bottom: 10px;
  font-family: "SF Mono", monospace;
}
.dev-qa-a { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* Upload Requirements */
.dev-req-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}
.dev-req-card {
  padding: 24px; border-radius: var(--radius); border: 1px solid var(--border);
  background: var(--surface);
}
.dev-req-label { font-size: 14px; font-weight: 700; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 2px solid var(--border); }
.dev-req-card.required .dev-req-label { border-color: var(--red); color: var(--red); }
.dev-req-card.optional .dev-req-label { border-color: var(--amber); color: var(--amber); }
.dev-req-card.auto .dev-req-label { border-color: var(--green); color: var(--green); }
.dev-req-card ul { list-style: none; padding: 0; }
.dev-req-card li { font-size: 13px; color: var(--text-secondary); margin-bottom: 10px; line-height: 1.5; }
.dev-req-card li strong { color: var(--text); }

/* Dark theme */
[data-theme="dark"] .dev-agent-card { background: var(--surface); border-color: var(--border); }
[data-theme="dark"] .dev-qa-card { background: var(--surface); }

/* Mobile */
@media (max-width: 768px) {
  .dev-hero-section h1 { font-size: 28px; }
  .dev-agent-grid { grid-template-columns: repeat(2, 1fr); }
  .dev-req-grid { grid-template-columns: 1fr; }
  .dev-mcp-addr { font-size: 14px; }
}