/* InvestDesk shared visual system. Load after legacy page styles. */
:root {
  color-scheme: dark;
  --id-bg: #0d1117;
  --id-surface: #161b22;
  --id-surface-raised: #212a36;
  --id-border: #344153;
  --id-text: #e6edf3;
  --id-muted: #a4b0bf;
  --id-accent: #f0883e;
  --id-accent-hover: #ffa65c;
  --id-link: #79b8ff;
  --id-positive: #57c785;
  --id-negative: #ff827b;
  --id-radius-sm: 8px;
  --id-radius-md: 12px;
  --id-radius-lg: 18px;
  --id-space-1: 4px;
  --id-space-2: 8px;
  --id-space-3: 12px;
  --id-space-4: 16px;
  --id-space-6: 24px;
  --id-space-8: 32px;
  --id-space-12: 48px;
  --id-shadow: 0 12px 32px rgb(0 0 0 / 16%);
  --id-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 100px; }
body { background: var(--id-bg); color: var(--id-text); font-family: var(--id-font); line-height: 1.65; -webkit-font-smoothing: antialiased; }
button, input, textarea, select { font: inherit; }
a, button, input, textarea, select, [tabindex] { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 2px solid var(--id-link); outline-offset: 4px; }
.form-input:focus-visible { outline: 2px solid var(--id-link); outline-offset: 3px; }
::selection { color: var(--id-bg); background: var(--id-link); }
img, svg { max-width: 100%; }
.id-icon { display: inline-block; width: 24px; height: 24px; flex: 0 0 auto; vertical-align: -0.2em; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.logo-icon { width: 40px; height: 40px; flex: 0 0 40px; border-radius: 9px; overflow: hidden; }
.logo-icon img { display: block; width: 100%; height: 100%; object-fit: cover; }
.logo, .topnav .logo { display: flex; align-items: center; gap: 12px; text-decoration: none; flex-shrink: 0; }
.logo-text { color: var(--id-text); font-size: 19px; font-weight: 700; letter-spacing: -0.035em; }
.logo-tagline { color: var(--id-muted); font-size: 11px; }
header, nav.topnav, .topnav { min-height: 76px; height: auto; background: rgb(13 17 23 / 96%); backdrop-filter: blur(16px); border-bottom: 1px solid var(--id-border); }
nav.topnav, .topnav { position: sticky; top: 0; z-index: 100; }
header { padding: 16px 0; }
.topnav { padding: 16px max(24px, calc((100vw - 1200px) / 2 + 24px)); gap: 24px; }
.header-content { gap: 24px; }
header .container { max-width: 1200px; padding-block: 0; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a, .nav-link { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 9px 13px; border-radius: var(--id-radius-sm); color: var(--id-muted); font-size: 14px; text-decoration: none; white-space: nowrap; transition: color 160ms, background-color 160ms; }
.nav-links a:hover, .nav-link:hover { color: var(--id-text); background: var(--id-surface-raised); }
.nav-links a.active, .nav-links a[aria-current='page'] { color: var(--id-accent); background: rgb(240 136 62 / 10%); box-shadow: inset 0 -2px var(--id-accent); }
.btn, .btn-sm, .plan-btn, .nav-auth-btn, .btn-download { min-height: 44px; border-radius: var(--id-radius-sm); font-weight: 600; line-height: 1.4; text-decoration: none; transition: background-color 160ms, border-color 160ms, box-shadow 160ms; }
.btn { padding: 12px 22px; justify-content: center; }
.btn-sm, .nav-auth-btn { padding: 10px 14px; font-size: 13px; }
.btn-primary, .plan-btn.primary, .modal-tab.active, .platform-tab.active, .cat-btn.active, .cat-btn:hover { background: var(--id-accent); color: var(--id-bg); border-color: var(--id-accent); }
.btn-primary:hover, .plan-btn.primary:hover { background: var(--id-accent-hover); color: var(--id-bg); transform: none; box-shadow: 0 4px 16px rgb(240 136 62 / 16%); }
.btn-secondary, .btn-outline, .nav-auth-btn.logout { color: var(--id-text); background: var(--id-surface); border: 1px solid var(--id-border); }
.btn-secondary:hover, .btn-outline:hover { background: var(--id-surface-raised); transform: none; border-color: var(--id-muted); }
button:disabled, .btn-disabled, [aria-disabled='true'] { cursor: not-allowed; opacity: .65; box-shadow: none; transform: none; }
.card, .feature-card, .ticker-card, .mini-card, .plan-card, .latest-section, .download-item, .feature-intro-card, .guide-step { background: var(--id-surface); border-color: var(--id-border); border-radius: var(--id-radius-md); }
.feature-card, .plan-card, .latest-section { box-shadow: var(--id-shadow); }
.feature-card:hover, .ticker-card:hover, .plan-card:hover { transform: none; border-color: var(--id-link); }
.page-title, .page h1 { font-size: clamp(28px, 3vw, 38px); letter-spacing: -0.035em; line-height: 1.25; }
.page-subtitle, .page-sub, .feature-card p, .feature-content p, .ticker-name, .form-label, .plan-tagline, .info-label, .form-hint, .modal-hint, .modal-close, .ticker-source, .ticker-update, footer, .empty, .download-item .size { color: var(--id-muted); }
.ticker-price, .plan-price, .plan-card-price, .info-value { font-variant-numeric: tabular-nums; }
.ticker-up { color: var(--id-negative); }
.ticker-down, .plan-save, .compare-check, .feature-check, .badge-green { color: var(--id-positive); }
.step-num, .plan-card.popular::before, .plan-card.current::after { color: var(--id-bg); }
.form-input { min-height: 44px; border-color: var(--id-border); border-radius: var(--id-radius-sm); background: var(--id-bg); color: var(--id-text); }
.form-input::placeholder { color: var(--id-muted); }
.modal { border-color: var(--id-border); border-radius: var(--id-radius-lg); box-shadow: 0 24px 80px rgb(0 0 0 / 50%); max-height: calc(100dvh - 32px); overflow-y: auto; }
.modal-overlay { padding: 16px; }
.toast { max-width: calc(100vw - 32px); }
footer { font-size: 13px; border-color: var(--id-border); }
footer a { color: var(--id-link); }
footer { padding: 40px 0; border-top: 1px solid var(--id-border); text-align: center; }
.feature-icon, .feature-intro-icon { display: flex; align-items: center; justify-content: center; width: 48px; height: 48px; border: 1px solid rgb(240 136 62 / 24%); border-radius: var(--id-radius-md); background: rgb(240 136 62 / 8%); color: var(--id-accent); }
.feature-icon .id-icon, .feature-intro-icon .id-icon { width: 26px; height: 26px; }
.success-icon .id-icon { width: 48px; height: 48px; color: var(--id-positive); }
/* Home-specific composition: restrained type and one warm accent. */
body[data-page='index'] .hero { padding: 104px 0 72px; background: radial-gradient(ellipse at 50% 0, rgb(240 136 62 / 8%), transparent 65%); }
body[data-page='index'] .hero h1 { font-size: clamp(42px, 7vw, 76px); line-height: 1.1; letter-spacing: -0.055em; color: var(--id-text); background: none; -webkit-text-fill-color: currentColor; }
body[data-page='index'] .hero p { max-width: 640px; color: var(--id-muted); line-height: 1.8; margin-top: 24px; }
body[data-page='index'] .feature-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
body[data-page='index'] .feature-card { padding: 28px; }
body[data-page='index'] .features { padding: 64px 0 88px; }
body[data-page='index'] .features h2 { letter-spacing: -0.03em; margin-bottom: 32px; }
body[data-page='dashboard'] .sidebar { top: 76px; height: calc(100vh - 76px); }
body[data-page='dashboard'] .content { min-width: 0; }
body[data-page='dashboard'] .page-title { font-size: 26px; }
@media (max-width: 1024px) {
  .topnav, .header-content { flex-wrap: wrap; gap: 12px; }
  .nav-links { flex-wrap: wrap; }
  .topnav .user-info { margin-left: auto; }
}
@media (max-width: 768px) {
  header, .topnav { position: relative; }
  .topnav { padding: 16px 20px; }
  .header-content { align-items: flex-start; }
  .nav-links { width: 100%; gap: 4px; }
  .nav-links a { padding: 9px 11px; }
  .container { padding-inline: 20px; }
  body[data-page='index'] .hero { padding: 64px 0 48px; }
  body[data-page='index'] .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  body[data-page='dashboard'] .main-layout { flex-direction: column; }
  body[data-page='dashboard'] .sidebar { display: block; position: static; height: auto; width: 100%; border-right: 0; border-bottom: 1px solid var(--id-border); padding: 16px 0; }
  body[data-page='dashboard'] .tree-menu { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
  body[data-page='dashboard'] .tree-group-header { padding: 10px 12px; gap: 6px; font-size: 12px; }
  body[data-page='dashboard'] .tree-item { padding: 10px 12px; min-height: 44px; }
  body[data-page='dashboard'] .content { width: 100%; max-width: 100%; padding: 24px 20px; }
  .compare-table { display: block; overflow-x: auto; }
  .modal { padding: 24px; }
  .latest-section { padding: 24px 20px; }
  .latest-buttons .btn { max-width: 100%; flex-wrap: wrap; }
}
@media (max-width: 480px) {
  body[data-page='index'] .feature-grid { grid-template-columns: minmax(0, 1fr); }
  body[data-page='index'] .feature-card { padding: 24px; }
  .download-buttons .btn { width: 100%; flex-wrap: wrap; }
  .billing-toggle { gap: 10px; }
  .info-row { gap: 12px; flex-wrap: wrap; }
  .info-value { overflow-wrap: anywhere; }
  .feature-intro-card { gap: 12px; padding: 16px; }
  body[data-page='dashboard'] .tree-menu { grid-template-columns: 1fr; }
  body[data-page='dashboard'] .tree-children.expanded { display: flex; flex-wrap: wrap; }
}
/* ── Unified topnav layout + mobile drawer (hamburger) ── */
.nav-auth-btn { cursor: pointer; border: none; }
.nav-auth-btn.login { background: transparent; color: var(--id-accent); border: 1px solid var(--id-accent); }
.nav-auth-btn.login:hover { background: rgb(240 136 62 / 10%); }
.topnav, nav.topnav { display: flex; align-items: center; flex-wrap: wrap; justify-content: space-between; }
.topnav .nav-toggle { display: none; margin-left: auto; width: 44px; height: 44px; padding: 0; border: 1px solid var(--id-border); border-radius: var(--id-radius-sm); background: var(--id-surface); cursor: pointer; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.topnav .nav-toggle:hover { background: var(--id-surface-raised); }
.topnav .nav-toggle span { display: block; width: 18px; height: 2px; border-radius: 1px; background: var(--id-text); transition: transform 160ms, opacity 160ms; }
.topnav .nav-toggle[aria-expanded='true'] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.topnav .nav-toggle[aria-expanded='true'] span:nth-child(2) { opacity: 0; }
.topnav .nav-toggle[aria-expanded='true'] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
@media (max-width: 768px) {
  .topnav .nav-toggle { display: inline-flex; }
  /* specificity (0,2,0) beats legacy `.nav-links{display:flex}` in page <style> blocks */
  .topnav .nav-links { display: none; }
  .topnav .nav-links.nav-open { display: flex; flex-direction: column; align-items: stretch; width: 100%; gap: 4px; padding-top: 12px; }
  .topnav .nav-links.nav-open a, .topnav .nav-links.nav-open .nav-auth-btn { width: 100%; justify-content: flex-start; }
  .topnav .user-info { margin-left: 0; }
  body[data-page='features'] .evidence-list { overflow-wrap: anywhere; }
}
@media (max-width: 480px) {
  body[data-page='features'] .mini-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 600px) {
  body[data-page='dashboard'] .content [style*='grid-template-columns'] { grid-template-columns: 1fr !important; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

/* ── Unified marketing page header（eyebrow + H1 + subtitle，全站一致，切页零跳动） ── */
.page-head { padding: 64px 24px 48px; text-align: center; background: radial-gradient(720px 320px at 50% 0%, rgb(240 136 62 / 7%), transparent 70%); }
.page-head-inner { max-width: 860px; margin: 0 auto; }
.page-head .page-eyebrow { font-size: 12px; font-weight: 600; letter-spacing: 0.18em; color: var(--id-accent); text-transform: uppercase; margin: 0 0 14px; }
.page-head .page-title, .page-head h1 { font-size: clamp(28px, 3.4vw, 38px); font-weight: 700; letter-spacing: -0.035em; line-height: 1.25; color: var(--id-text); margin: 0 0 12px; text-align: center; }
.page-head .page-subtitle, .page-head .page-sub { font-size: 16px; color: var(--id-muted); margin: 0 auto; max-width: 640px; text-align: center; }
@media (max-width: 768px) {
  .page-head { padding: 48px 20px 36px; }
}