/* Navigation and compact API introduction; shared colors come from theme-tokens.css. */
:root {
  --tf-nav-bg: rgba(247,248,251,.92);
  --tf-nav-text: #3e4960;
  --tf-menu-bg: #ffffff;
  --tf-intro-bg: #ffffff;
  --tf-intro-ink: #18243b;
  --tf-intro-muted: #53627d;
  --tf-intro-border: #cfdaef;
  --tf-intro-glow: rgba(101,119,239,.11);
  --tf-intro-eyebrow-bg: #eff2ff;
  --tf-intro-eyebrow-ink: #4055bd;
  --tf-intro-eyebrow-border: #d5dcff;
  --tf-intro-address-bg: #f5f7ff;
  --tf-intro-address-border: #d0daee;
  --tf-intro-address-label: #65728b;
  --tf-intro-address-ink: #243350;
  --tf-intro-secondary-bg: #f4f6ff;
  --tf-intro-secondary-border: #cbd6ec;
  --tf-intro-secondary-ink: #2c3d66;
  --tf-intro-divider: #e2e8f4;
  --tf-intro-chip-border: #d5dfef;
  --tf-intro-chip-ink: #52617d;
  --tf-wave-color: #536cdb;
  --tf-wave-line-opacity: .34;
  --tf-wave-glow-opacity: .09;
}
:root[data-theme="dark"] {
  --tf-nav-bg: rgba(18,25,39,.94);
  --tf-nav-text: #c8d2e4;
  --tf-menu-bg: #182234;
  --tf-intro-bg: #121b2c;
  --tf-intro-ink: #f5f7ff;
  --tf-intro-muted: #a9b5d0;
  --tf-intro-border: #33405c;
  --tf-intro-glow: rgba(99,111,245,.2);
  --tf-intro-eyebrow-bg: rgba(117,128,255,.12);
  --tf-intro-eyebrow-ink: #acb7ff;
  --tf-intro-eyebrow-border: rgba(149,164,255,.3);
  --tf-intro-address-bg: rgba(6,11,22,.42);
  --tf-intro-address-border: #3a4662;
  --tf-intro-address-label: #9eaacc;
  --tf-intro-address-ink: #e9edff;
  --tf-intro-secondary-bg: rgba(255,255,255,.08);
  --tf-intro-secondary-border: #56627a;
  --tf-intro-secondary-ink: #f1f3ff;
  --tf-intro-divider: rgba(255,255,255,.1);
  --tf-intro-chip-border: #404c67;
  --tf-intro-chip-ink: #d4dcf2;
  --tf-wave-color: #8ca4ff;
  --tf-wave-line-opacity: .42;
  --tf-wave-glow-opacity: .12;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]), :root[data-theme="system"] {
    --tf-nav-bg: rgba(18,25,39,.94);
    --tf-nav-text: #c8d2e4;
    --tf-menu-bg: #182234;
    --tf-intro-bg: #121b2c;
    --tf-intro-ink: #f5f7ff;
    --tf-intro-muted: #a9b5d0;
    --tf-intro-border: #33405c;
    --tf-intro-glow: rgba(99,111,245,.2);
    --tf-intro-eyebrow-bg: rgba(117,128,255,.12);
    --tf-intro-eyebrow-ink: #acb7ff;
    --tf-intro-eyebrow-border: rgba(149,164,255,.3);
    --tf-intro-address-bg: rgba(6,11,22,.42);
    --tf-intro-address-border: #3a4662;
    --tf-intro-address-label: #9eaacc;
    --tf-intro-address-ink: #e9edff;
    --tf-intro-secondary-bg: rgba(255,255,255,.08);
    --tf-intro-secondary-border: #56627a;
    --tf-intro-secondary-ink: #f1f3ff;
    --tf-intro-divider: rgba(255,255,255,.1);
    --tf-intro-chip-border: #404c67;
    --tf-intro-chip-ink: #d4dcf2;
    --tf-wave-color: #8ca4ff;
    --tf-wave-line-opacity: .42;
    --tf-wave-glow-opacity: .12;
  }
}
.tf-nav { background: var(--tf-nav-bg); border-bottom-color: var(--line); }
.tf-nav-inner { gap: 28px; }
.tf-nav-links { margin-right: auto; color: var(--tf-nav-text); }
.tf-nav-planned { color: var(--muted); cursor: default; }
.tf-mobile-planned { display:block; padding:13px 4px; color:var(--muted); font-size:14px; }
.tf-nav-support {
  display: inline-flex; align-items: center; min-height: 34px; padding: 0 12px;
  border: 1px solid var(--line-strong); border-radius: 9px;
  background: var(--surface); color: var(--ink); font-size: 12px; font-weight: 700;
}
.tf-nav-support:hover { border-color: var(--blue); }
.tf-director-contact { display:grid; grid-template-columns:minmax(0, 1fr) minmax(220px, 360px); gap:32px; align-items:center; margin-top:24px; }
.tf-director-contact h2 { margin:12px 0 0; }
.tf-director-contact .tf-director-name { margin:14px 0 0; color:var(--ink); font-size:24px; font-weight:750; line-height:1.4; }
.tf-director-copy > p:not(.tf-director-name) { max-width:520px; }
.tf-director-hint { display:block; margin-top:18px; color:var(--blue); font-size:12px; font-weight:700; }
.tf-director-qr { display:block; width:100%; max-width:360px; overflow:hidden; border:1px solid var(--line); border-radius:18px; background:#fff; }
.tf-director-qr:focus-visible { outline:3px solid var(--blue); outline-offset:4px; }
.tf-director-qr img { display:block; width:100%; height:auto; }
.tf-qq-support { display:grid; grid-template-columns:minmax(0, 1fr) minmax(220px, 360px); gap:32px; align-items:center; margin-top:24px; }
.tf-qq-support h2 { margin:12px 0 0; }
.tf-qq-support p { max-width:520px; }
.tf-qq-support strong { display:inline-block; margin-top:12px; font-size:24px; letter-spacing:.03em; }
.tf-qq-support img { display:block; width:100%; height:380px; object-fit:cover; object-position:center 43%; border:1px solid var(--line); border-radius:18px; background:#f4f6fa; }
@media(max-width:700px){.tf-director-contact,.tf-qq-support{grid-template-columns:1fr}.tf-director-qr{max-width:360px}.tf-qq-support img{max-width:360px;height:340px}}
.tf-nav-popover { position: relative; }
.tf-nav-popover summary {
  display: grid; place-items: center; width: 34px; height: 34px;
  border: 1px solid var(--line); border-radius: 50%;
  background: var(--surface-2); color: var(--tf-nav-text); cursor: pointer;
  list-style: none; font-size: 16px;
}
.tf-nav-popover summary::-webkit-details-marker { display: none; }
.tf-nav-popover[open] summary, .tf-nav-popover summary:hover { border-color: var(--blue); color: var(--ink); }
.tf-nav-dropdown {
  position: absolute; top: calc(100% + 12px); right: 0; z-index: 120;
  display: grid; min-width: 160px; padding: 7px;
  border: 1px solid var(--line); border-radius: 11px; background: var(--tf-menu-bg);
  box-shadow: var(--shadow);
}
.tf-nav-dropdown button, .tf-nav-dropdown a {
  display: block; width: 100%; padding: 10px 12px; border: 0; border-radius: 7px;
  background: transparent; color: var(--ink); text-align: left; font-size: 12px; cursor: pointer;
}
.tf-nav-dropdown button:hover, .tf-nav-dropdown a:hover, .tf-nav-dropdown button[aria-pressed="true"] {
  background: var(--surface-2); color: var(--blue);
}
.tf-nav-dropdown p { margin: 6px 8px; color: var(--muted); font-size: 12px; white-space: nowrap; }
.tf-nav-popover:focus-within summary, .tf-api-address button:focus-visible, .tf-mobile-theme button:focus-visible {
  outline: 2px solid var(--blue); outline-offset: 2px;
}
.tf-mobile-theme { display: flex; gap: 8px; padding: 12px 4px; }
.tf-mobile-theme button {
  padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--surface); color: var(--ink); font-size: 12px;
}
.tf-mobile-theme button[aria-pressed="true"] { border-color: var(--blue); color: var(--blue); }
.tf-mobile-menu { background: var(--tf-menu-bg); }
.tf-mobile-menu a { color: var(--ink); }
.tf-menu-toggle { background: var(--surface); }
.tf-menu-toggle span { background: var(--ink); }
.tf-language-switch a, .tf-mobile-language a { color: var(--muted); }

.tf-api-intro {
  padding: 104px 0 30px; border-bottom: 1px solid var(--line); background: var(--bg);
}
.tf-api-intro-inner {
  position: relative; padding: 50px 38px 38px; border: 1px solid var(--tf-intro-border);
  border-radius: 24px; background: radial-gradient(circle at 82% 18%,var(--tf-intro-glow),transparent 35%),var(--tf-intro-bg);
  color: var(--tf-intro-ink); text-align: center; overflow: hidden;
}
.tf-api-intro-inner > :not(.tf-api-wave-viewport) { position: relative; z-index: 1; }
.tf-api-wave-viewport {
  position: absolute; inset: 0; z-index: 0; overflow: hidden; pointer-events: none;
  -webkit-mask-image: radial-gradient(ellipse 64% 52% at 50% 43%,rgba(0,0,0,.08),rgba(0,0,0,.25) 55%,#000 100%);
  mask-image: radial-gradient(ellipse 64% 52% at 50% 43%,rgba(0,0,0,.08),rgba(0,0,0,.25) 55%,#000 100%);
}
.tf-api-waves {
  position: absolute; top: 0; left: 0;
  width: 200%; height: 100%; max-width: none; color: var(--tf-wave-color);
  pointer-events: none; animation: tf-api-wave-drift 36s linear infinite;
}
.tf-api-wave-line { stroke-width: 8; opacity: var(--tf-wave-line-opacity); }
.tf-api-wave-glow { stroke-width: 30; opacity: var(--tf-wave-glow-opacity); }
@keyframes tf-api-wave-drift { to { transform: translateX(-50%); } }
.tf-hero-copy h1 { font-size: 52px; }
.tf-lang-en .tf-hero-copy h1 { font-size: 50px; }
.tf-api-intro-eyebrow {
  display: inline-flex; padding: 7px 12px; border: 1px solid var(--tf-intro-eyebrow-border);
  border-radius: 999px; background: var(--tf-intro-eyebrow-bg); color: var(--tf-intro-eyebrow-ink);
  font-size: 11px; font-weight: 700; letter-spacing: .04em;
}
.tf-api-intro h2 { margin: 18px 0 0; font-size: clamp(32px,4vw,52px); line-height: 1.12; letter-spacing: -.045em; }
.tf-api-intro p { max-width: 700px; margin: 15px auto 0; color: var(--tf-intro-muted); font-size: 14px; line-height: 1.7; }
.tf-api-address {
  display: flex; align-items: center; justify-content: space-between; gap: 15px;
  width: min(540px,100%); margin: 25px auto 0; padding: 8px 9px 8px 18px;
  border: 1px solid var(--tf-intro-address-border); border-radius: 13px; background: var(--tf-intro-address-bg); text-align: left;
}
.tf-api-address span { min-width: 0; }
.tf-api-address small, .tf-api-address code { display: block; }
.tf-api-address small { margin-bottom: 4px; color: var(--tf-intro-address-label); font-size: 10px; }
.tf-api-address code { color: var(--tf-intro-address-ink); font: 600 14px/1.3 var(--mono); overflow-wrap: anywhere; }
.tf-api-address button {
  flex: none; min-height: 36px; padding: 0 13px; border: 0; border-radius: 8px;
  background: #6877ed; color: white; font-size: 11px; font-weight: 700; cursor: pointer;
}
.tf-api-intro-actions { display: flex; justify-content: center; gap: 10px; margin-top: 21px; }
.tf-api-intro-actions .tf-btn { min-height: 40px; padding-inline: 17px; font-size: 12px; }
.tf-btn-planned { opacity:.55; cursor:default; }
.tf-btn-planned:hover { transform:none; }
.tf-api-intro-actions .tf-btn-secondary { background: var(--tf-intro-secondary-bg); border-color: var(--tf-intro-secondary-border); color: var(--tf-intro-secondary-ink); }
.tf-api-intro-catalog { margin-top: 26px; padding-top: 17px; border-top: 1px solid var(--tf-intro-divider); color: var(--tf-intro-muted); font-size: 11px; }
.tf-api-intro-catalog div { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; margin-top: 11px; }
.tf-api-intro-catalog div span {
  padding: 7px 11px; border: 1px solid var(--tf-intro-chip-border); border-radius: 999px;
  color: var(--tf-intro-chip-ink); font-size: 11px;
}

:root[data-theme="dark"] .tf-grid-bg:after { background: linear-gradient(to bottom,rgba(14,20,33,.05),var(--bg) 88%); }
:root[data-theme="dark"] .tf-eyebrow,
:root[data-theme="dark"] .tf-btn-secondary,
:root[data-theme="dark"] .tf-page-aside,
:root[data-theme="dark"] .tf-doc-block,
:root[data-theme="dark"] .tf-code-layout,
:root[data-theme="dark"] .tf-steps>div span { background: var(--surface); color: var(--ink); }
:root[data-theme="dark"] .tf-models,
:root[data-theme="dark"] .tf-status-section,
:root[data-theme="dark"] .tf-cta { background: var(--bg); }
:root[data-theme="dark"] .tf-dev-section,
:root[data-theme="dark"] .tf-footer { background: #121b2a; }
:root[data-theme="dark"] .tf-cta-box { background: linear-gradient(120deg,#1c2750,#4254a9 58%,#146477); }
:root[data-theme="dark"] .tf-nav-links,
:root[data-theme="dark"] .tf-nav-text,
:root[data-theme="dark"] .tf-text-link,
:root[data-theme="dark"] .tf-feature-line,
:root[data-theme="dark"] .tf-list li,
:root[data-theme="dark"] .tf-page-aside a,
:root[data-theme="dark"] .tf-status-summary p,
:root[data-theme="dark"] .tf-legal-note { color: var(--muted)!important; }
:root[data-theme="dark"] .tf-model-strip small,
:root[data-theme="dark"] .tf-service-card small,
:root[data-theme="dark"] .tf-trust-row span,
:root[data-theme="dark"] .tf-footer-col a { color: #a9b6ca; }
:root[data-theme="dark"] .tf-inline-code { background: var(--surface-2); color: var(--ink); }
:root[data-theme="dark"] .tf-page-hero { background-color: var(--bg); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .tf-grid-bg:after, :root[data-theme="system"] .tf-grid-bg:after { background: linear-gradient(to bottom,rgba(14,20,33,.05),var(--bg) 88%); }
  :root:not([data-theme]) .tf-eyebrow, :root[data-theme="system"] .tf-eyebrow,
  :root:not([data-theme]) .tf-btn-secondary, :root[data-theme="system"] .tf-btn-secondary,
  :root:not([data-theme]) .tf-page-aside, :root[data-theme="system"] .tf-page-aside,
  :root:not([data-theme]) .tf-doc-block, :root[data-theme="system"] .tf-doc-block,
  :root:not([data-theme]) .tf-code-layout, :root[data-theme="system"] .tf-code-layout,
  :root:not([data-theme]) .tf-steps>div span, :root[data-theme="system"] .tf-steps>div span { background: var(--surface); color: var(--ink); }
  :root:not([data-theme]) .tf-models, :root[data-theme="system"] .tf-models,
  :root:not([data-theme]) .tf-status-section, :root[data-theme="system"] .tf-status-section,
  :root:not([data-theme]) .tf-cta, :root[data-theme="system"] .tf-cta { background: var(--bg); }
  :root:not([data-theme]) .tf-dev-section, :root[data-theme="system"] .tf-dev-section,
  :root:not([data-theme]) .tf-footer, :root[data-theme="system"] .tf-footer { background: #121b2a; }
  :root:not([data-theme]) .tf-nav-links, :root[data-theme="system"] .tf-nav-links,
  :root:not([data-theme]) .tf-text-link, :root[data-theme="system"] .tf-text-link,
  :root:not([data-theme]) .tf-feature-line, :root[data-theme="system"] .tf-feature-line,
  :root:not([data-theme]) .tf-list li, :root[data-theme="system"] .tf-list li,
  :root:not([data-theme]) .tf-page-aside a, :root[data-theme="system"] .tf-page-aside a,
  :root:not([data-theme]) .tf-legal-note, :root[data-theme="system"] .tf-legal-note { color: var(--muted)!important; }
  :root:not([data-theme]) .tf-inline-code, :root[data-theme="system"] .tf-inline-code { background: var(--surface-2); color: var(--ink); }
}
@media (max-width: 820px) {
  .tf-nav-support, .tf-account-popover { display: none; }
  .tf-nav-actions { margin-left: auto; }
  .tf-hero-copy h1, .tf-lang-en .tf-hero-copy h1 { font-size: 46px; }
}
@media (max-width: 560px) {
  .tf-nav-inner { gap: 12px; }
  .tf-nav-actions { gap: 7px; }
  .tf-nav-popover summary { width: 30px; height: 30px; }
  .tf-api-intro { padding-top: 88px; }
  .tf-api-intro-inner { padding: 35px 20px 26px; }
  .tf-api-address { align-items: stretch; flex-direction: column; padding: 13px; }
  .tf-api-address button { width: 100%; }
  .tf-api-intro-actions { align-items: stretch; flex-direction: column; }
  .tf-hero-copy h1, .tf-lang-en .tf-hero-copy h1 { font-size: 36px; }
}
@media (prefers-reduced-motion: reduce) {
  .tf-api-waves { animation: none; }
}