/*
Theme Name: ThuThuatAI Precision Editorial
Theme URI: https://thuthuatai.net/
Author: MindVerse Tech Media (ThS. Lê Hoàng Minh Khôi)
Author URI: https://thuthuatai.net/ve-chung-toi/
Description: Giao diện Precision Tech Editorial chuẩn SEO, Core Web Vitals (Zero-jQuery) và Google E-E-A-T thiết kế riêng cho chuyên trang Tin tức Trí tuệ Nhân tạo, Prompt Engineering & Tự động hóa Thực chiến ThuThuatAI.net.
Version: 1.0.0
Requires at least: 6.4
Requires PHP: 8.1
License: Proprietary - MindVerse Digital Knowledge Media & Technology Co., Ltd.
Text Domain: thuthuatai-precision
*/

/* ==========================================================================
   1. SELF-HOSTED VIETNAMESE + LATIN WOFF2 FONTS (ZERO EXTERNAL REQUESTS)
   ========================================================================== */
@font-face {
  font-family: 'Be Vietnam Pro';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('assets/fonts/be-vietnam-pro-vn-600.woff2') format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+1EA0-1EF9, U+20AB;
}
@font-face {
  font-family: 'Be Vietnam Pro';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('assets/fonts/be-vietnam-pro-lat-600.woff2') format('woff2');
}
@font-face {
  font-family: 'Be Vietnam Pro';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('assets/fonts/be-vietnam-pro-vn-700.woff2') format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+1EA0-1EF9, U+20AB;
}
@font-face {
  font-family: 'Be Vietnam Pro';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('assets/fonts/be-vietnam-pro-lat-700.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/inter-vn-400.woff2') format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+1EA0-1EF9, U+20AB;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/inter-lat-400.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('assets/fonts/inter-vn-500.woff2') format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+1EA0-1EF9, U+20AB;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('assets/fonts/inter-lat-500.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('assets/fonts/inter-vn-600.woff2') format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+1EA0-1EF9, U+20AB;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('assets/fonts/inter-lat-600.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/jetbrains-mono-vn-400.woff2') format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+1EA0-1EF9, U+20AB;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/jetbrains-mono-lat-400.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('assets/fonts/jetbrains-mono-vn-500.woff2') format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+1EA0-1EF9, U+20AB;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('assets/fonts/jetbrains-mono-lat-500.woff2') format('woff2');
}

/* ==========================================================================
   2. SEMANTIC COLOR TOKENS (PAPER SLATE LIGHT & OBSIDIAN LAB DARK)
   ========================================================================== */
:root,
[data-theme="light"] {
  --ttai-bg-canvas: #F8FAFC;
  --ttai-bg-surface: #FFFFFF;
  --ttai-bg-elevated: #F1F5F9;
  --ttai-bg-code: #0F172A;
  --ttai-text-primary: #0F172A;
  --ttai-text-secondary: #334155;
  --ttai-text-muted: #475569;
  --ttai-brand-primary: #1D4ED8;
  --ttai-brand-hover: #1E40AF;
  --ttai-brand-soft: #EFF6FF;
  --ttai-accent-verified: #047857;
  --ttai-bg-verified: #ECFDF5;
  --ttai-status-warning: #B45309;
  --ttai-bg-warning: #FFFBEB;
  --ttai-status-danger: #B91C1C;
  --ttai-bg-danger: #FEF2F2;
  --ttai-border-subtle: #E2E8F0;
  --ttai-border-strong: #CBD5E1;
  --ttai-focus-ring: #2563EB;
  --ttai-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --ttai-shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --ttai-font-heading: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --ttai-font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --ttai-font-mono: 'JetBrains Mono', ui-monospace, 'Cascadia Code', Consolas, monospace;
}

[data-theme="dark"] {
  --ttai-bg-canvas: #0B1120;
  --ttai-bg-surface: #111827;
  --ttai-bg-elevated: #1E293B;
  --ttai-bg-code: #060B14;
  --ttai-text-primary: #F1F5F9;
  --ttai-text-secondary: #CBD5E1;
  --ttai-text-muted: #94A3B8;
  --ttai-brand-primary: #60A5FA;
  --ttai-brand-hover: #93C5FD;
  --ttai-brand-soft: rgba(59, 130, 246, 0.14);
  --ttai-accent-verified: #34D399;
  --ttai-bg-verified: #064E3B;
  --ttai-status-warning: #FBBF24;
  --ttai-bg-warning: #291D09;
  --ttai-status-danger: #F87171;
  --ttai-bg-danger: #3B1219;
  --ttai-border-subtle: #1F2937;
  --ttai-border-strong: #334155;
  --ttai-focus-ring: #38BDF8;
  --ttai-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
  --ttai-shadow-md: 0 12px 28px rgba(0, 0, 0, 0.45);
}

/* ==========================================================================
   3. BASE RESET, VIETNAMESE TYPOGRAPHY & ACCESSIBILITY
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background-color: var(--ttai-bg-canvas);
  color: var(--ttai-text-primary);
  font-family: var(--ttai-font-sans);
  font-feature-settings: "cv02" 1, "cv03" 1, "cv04" 1, "cv11" 1;
  font-size: clamp(1.0313rem, 1rem + 0.2vw, 1.0938rem);
  line-height: 1.76;
}
main, .ttai-topbar, .ttai-footer {
  overflow-x: clip;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--ttai-font-heading);
  color: var(--ttai-text-primary);
  margin-top: 0;
  letter-spacing: -0.012em;
}

h1 { font-size: clamp(1.625rem, 1.3rem + 1.4vw, 2.25rem); line-height: 1.32; font-weight: 700; }
h2 { font-size: clamp(1.3125rem, 1.15rem + 0.7vw, 1.625rem); line-height: 1.36; font-weight: 700; scroll-margin-top: 96px; }
h3 { font-size: clamp(1.125rem, 1.05rem + 0.35vw, 1.25rem); line-height: 1.42; font-weight: 600; scroll-margin-top: 96px; }
h4 { font-size: 1.0625rem; line-height: 1.45; font-weight: 600; }

code, pre, kbd, .ttai-mono {
  font-family: var(--ttai-font-mono);
  font-variant-ligatures: none;
}

a {
  color: var(--ttai-brand-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover {
  color: var(--ttai-brand-hover);
}

:focus-visible {
  outline: 2px solid var(--ttai-focus-ring);
  outline-offset: 2px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.ttai-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.ttai-skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  z-index: 9999;
  background: var(--ttai-brand-primary);
  color: #FFFFFF;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
}
.ttai-skip-link:focus {
  left: 16px;
  color: #FFFFFF;
}

.ttai-container {
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: 16px;
}
@media (min-width: 768px) { .ttai-container { padding-inline: 24px; } }
@media (min-width: 1280px) { .ttai-container { padding-inline: 32px; } }

/* ==========================================================================
   4. SECTION A1: TOP BREAKING AI TICKER BAR & A2: STICKY MEGA MENU HEADER
   ========================================================================== */
.ttai-topbar {
  min-height: 38px;
  background: var(--ttai-bg-elevated);
  border-bottom: 1px solid var(--ttai-border-subtle);
  font-size: 0.8125rem;
}
.ttai-topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 38px;
}
.ttai-ticker {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
}
.ttai-ticker__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--ttai-bg-verified);
  color: var(--ttai-accent-verified);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
}
.ttai-ticker__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ttai-accent-verified);
}
.ttai-ticker__pause {
  background: transparent;
  border: 1px solid var(--ttai-border-strong);
  color: var(--ttai-text-secondary);
  border-radius: 4px;
  min-width: 28px;
  min-height: 26px;
  padding: 0 7px;
  font-size: 0.75rem;
  cursor: pointer;
}
.ttai-ticker__viewport {
  position: relative;
  height: 24px;
  overflow: hidden;
  flex: 1;
  min-width: 0;
}
.ttai-ticker__item {
  display: none;
  line-height: 24px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--ttai-text-secondary);
  font-weight: 500;
}
.ttai-ticker__item.is-active {
  display: block;
}
.ttai-topbar__links {
  display: none;
  align-items: center;
  gap: 14px;
  white-space: nowrap;
}
@media (min-width: 1024px) {
  .ttai-topbar__links { display: flex; }
}
.ttai-topbar__links a {
  color: var(--ttai-text-muted);
  font-weight: 500;
}
.ttai-topbar__links a:hover {
  color: var(--ttai-brand-primary);
}

.ttai-header {
  position: -webkit-sticky;
  position: sticky;
  top: 0;
  z-index: 950;
  height: 64px;
  background: var(--ttai-bg-surface);
  border-bottom: 1px solid var(--ttai-border-subtle);
  box-shadow: var(--ttai-shadow-sm);
}
@media (min-width: 601px) and (max-width: 782px) {
  body.admin-bar .ttai-header { top: 46px; }
}
@media (min-width: 783px) {
  body.admin-bar .ttai-header { top: 32px; }
}
@media (min-width: 1024px) {
  .ttai-header { height: 72px; }
}
.ttai-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 10px;
}
.ttai-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ttai-text-primary);
  text-decoration: none;
  flex-shrink: 0;
}
.ttai-brand__mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #1D4ED8, #047857);
  color: #FFFFFF;
  font-family: var(--ttai-font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.ttai-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.ttai-brand__title {
  font-family: var(--ttai-font-heading);
  font-weight: 700;
  font-size: 1.18rem;
  color: var(--ttai-text-primary);
}
.ttai-brand__title span { color: var(--ttai-brand-primary); }
.ttai-brand__sub {
  font-family: var(--ttai-font-mono);
  font-size: 0.68rem;
  color: var(--ttai-accent-verified);
  font-weight: 600;
}

.ttai-nav {
  display: none;
  align-items: stretch;
  height: 100%;
  gap: 2px;
}
@media (min-width: 1180px) {
  .ttai-nav { display: flex; }
}
.ttai-nav__item {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
}
.ttai-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 40px;
  padding: 0 9px;
  border-radius: 8px;
  color: var(--ttai-text-primary);
  font-weight: 600;
  font-size: 0.84rem;
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.14s ease, color 0.14s ease;
}
.ttai-nav__caret {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72em;
  opacity: 0.75;
  padding: 4px 2px;
  transition: transform 0.16s ease, opacity 0.16s ease;
}
.ttai-nav__item:not(.is-force-closed):hover .ttai-nav__caret,
.ttai-nav__item.is-open .ttai-nav__caret {
  transform: rotate(180deg);
  opacity: 1;
}
.ttai-nav__link:hover,
.ttai-nav__item:not(.is-force-closed):hover .ttai-nav__link,
.ttai-nav__item.is-open .ttai-nav__link {
  background: var(--ttai-bg-elevated);
  color: var(--ttai-brand-primary);
  text-decoration: none;
}
.ttai-mega {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 368px;
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-strong);
  border-top: 2px solid var(--ttai-brand-primary);
  border-radius: 0 0 12px 12px;
  padding: 10px;
  box-shadow: var(--ttai-shadow-md);
  z-index: 950;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(4px);
  transition: opacity 0.14s ease, transform 0.14s ease, visibility 0s linear 0.14s;
}
.ttai-mega::before {
  content: "";
  position: absolute;
  top: -24px;
  left: -32px;
  right: -32px;
  height: 28px;
}
.ttai-nav__item:nth-last-child(-n+3) .ttai-mega {
  left: auto;
  right: 0;
}
.ttai-nav__item:not(.is-force-closed):hover .ttai-mega,
.ttai-nav__item:not(.is-force-closed):focus-within .ttai-mega,
.ttai-nav__item.is-open .ttai-mega {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  transition: opacity 0.14s ease, transform 0.14s ease, visibility 0s linear 0s;
}
.ttai-mega__link {
  display: block;
  padding: 11px 14px;
  border-radius: 8px;
  color: var(--ttai-text-primary);
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.12s ease;
}
.ttai-mega__link:hover {
  background: var(--ttai-bg-elevated);
  text-decoration: none;
}
.ttai-mega__link:hover .ttai-mega__title {
  color: var(--ttai-brand-primary);
}
.ttai-mega__title {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--ttai-text-primary);
}
.ttai-mega__desc {
  display: block;
  font-size: 0.77rem;
  color: var(--ttai-text-muted);
  line-height: 1.45;
  margin-top: 2px;
}
.ttai-mega__foot {
  margin-top: 6px;
  padding-top: 8px;
  border-top: 1px solid var(--ttai-border-subtle);
}
.ttai-mega__all {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 14px;
  border-radius: 8px;
  font-size: 0.81rem;
  font-weight: 700;
  color: var(--ttai-brand-primary);
  text-decoration: none;
}
.ttai-mega__all:hover {
  background: var(--ttai-brand-soft);
  text-decoration: none;
}

.ttai-header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.ttai-btn-icon,
.ttai-search-trigger {
  height: 40px;
  width: 40px;
  min-height: 40px;
  min-width: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ttai-bg-elevated);
  border: 1px solid var(--ttai-border-subtle);
  color: var(--ttai-text-secondary);
  border-radius: 10px;
  padding: 0;
  flex-shrink: 0;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, background-color 0.15s ease;
}
.ttai-btn-icon:hover,
.ttai-search-trigger:hover {
  border-color: var(--ttai-border-strong);
  color: var(--ttai-brand-primary);
}
.ttai-icon-moon,
.ttai-icon-sun {
  display: block;
}
.ttai-icon-sun {
  display: none;
}
[data-theme="dark"] .ttai-icon-moon {
  display: none;
}
[data-theme="dark"] .ttai-icon-sun {
  display: block;
}
.ttai-btn-cta {
  display: none;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 10px;
  background: var(--ttai-brand-primary);
  color: #FFFFFF !important;
  font-weight: 600;
  font-size: 0.85rem;
  white-space: nowrap;
}
.ttai-btn-cta:hover { background: var(--ttai-brand-hover); }
@media (min-width: 640px) and (max-width: 1179.98px) { .ttai-header__actions .ttai-btn-cta { display: inline-flex; padding: 0 12px; font-size: 0.81rem; } }

.ttai-mobile-toggle {
  display: inline-flex;
  background: var(--ttai-brand-soft);
  color: var(--ttai-brand-primary);
  border-color: var(--ttai-border-strong);
  font-size: 1.15rem;
  font-weight: 700;
}
@media (max-width: 479.98px) {
  .ttai-header__inner { gap: 6px; }
  .ttai-header .ttai-brand { gap: 8px; min-width: 0; }
  .ttai-header .ttai-brand__mark { width: 34px; height: 34px; font-size: 0.85rem; border-radius: 8px; }
  .ttai-header .ttai-brand__title { font-size: 1.04rem; }
  .ttai-header .ttai-brand__sub { font-size: 0.61rem; }
  .ttai-header__actions { gap: 6px; }
  .ttai-header__actions .ttai-btn-icon,
  .ttai-header__actions .ttai-search-trigger {
    height: 38px;
    width: 38px;
    min-height: 38px;
    min-width: 38px;
    padding: 0;
  }
  .ttai-header__actions .ttai-mobile-toggle {
    font-size: 1.12rem;
  }
}
@media (max-width: 359.98px) {
  .ttai-header .ttai-brand__sub { display: none; }
}
@media (min-width: 1180px) {
  .ttai-mobile-toggle { display: none; }
}

.ttai-drawer {
  position: fixed;
  inset: 0;
  z-index: 100001;
  visibility: hidden;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease, visibility 0s linear 0.2s;
}
.ttai-drawer.is-open {
  visibility: visible;
  pointer-events: auto;
  opacity: 1;
  transition: opacity 0.2s ease, visibility 0s linear 0s;
}
.ttai-drawer__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.62);
  touch-action: none;
}
.ttai-drawer__panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(90vw, 380px);
  height: 100%;
  max-height: 100dvh;
  background: var(--ttai-bg-surface);
  border-left: 1px solid var(--ttai-border-strong);
  box-shadow: -8px 0 28px rgba(15, 23, 42, 0.28);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}
.ttai-drawer.is-open .ttai-drawer__panel {
  transform: translateX(0);
}
.ttai-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 16px;
  min-height: 64px;
  border-bottom: 1px solid var(--ttai-border-subtle);
  flex-shrink: 0;
}
.ttai-drawer__close {
  font-size: 1.05rem;
  font-weight: 700;
}
.ttai-drawer__body {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  padding: 14px 16px 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.ttai-drawer__search {
  width: 100%;
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 14px;
  border-radius: 10px;
  background: var(--ttai-bg-elevated);
  border: 1px solid var(--ttai-border-strong);
  color: var(--ttai-text-secondary);
  font-size: 0.88rem;
  text-align: left;
  cursor: pointer;
}
.ttai-drawer__nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.ttai-drawer__group {
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 10px;
  background: var(--ttai-bg-canvas);
  overflow: hidden;
}
.ttai-drawer__direct {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 48px;
  padding: 10px 14px;
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 10px;
  background: var(--ttai-bg-canvas);
  font-weight: 700;
  font-size: 0.94rem;
  color: var(--ttai-text-primary);
  text-decoration: none;
}
.ttai-drawer__direct:hover {
  border-color: var(--ttai-brand-primary);
  color: var(--ttai-brand-primary);
}
.ttai-drawer__summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 48px;
  padding: 10px 14px;
  font-weight: 700;
  font-size: 0.94rem;
  color: var(--ttai-text-primary);
  cursor: pointer;
  user-select: none;
}
.ttai-drawer__summary::-webkit-details-marker {
  display: none;
}
.ttai-drawer__chev {
  font-size: 0.82rem;
  color: var(--ttai-text-muted);
  transition: transform 0.16s ease;
}
.ttai-drawer__group[open] {
  border-color: var(--ttai-brand-primary);
  background: var(--ttai-bg-surface);
}
.ttai-drawer__group[open] .ttai-drawer__summary {
  color: var(--ttai-brand-primary);
  border-bottom: 1px solid var(--ttai-border-subtle);
}
.ttai-drawer__group[open] .ttai-drawer__chev {
  transform: rotate(180deg);
  color: var(--ttai-brand-primary);
}
.ttai-drawer__sublist {
  display: flex;
  flex-direction: column;
  padding: 6px;
}
.ttai-drawer__sublink {
  display: block;
  padding: 10px 10px;
  border-radius: 8px;
  color: var(--ttai-text-primary);
  text-decoration: none;
}
.ttai-drawer__sublink:hover,
.ttai-drawer__sublink:active {
  background: var(--ttai-bg-elevated);
}
.ttai-drawer__subtitle {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--ttai-text-primary);
}
.ttai-drawer__subdesc {
  display: block;
  font-size: 0.76rem;
  color: var(--ttai-text-muted);
  line-height: 1.4;
  margin-top: 2px;
}
.ttai-drawer__all {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
  padding: 10px 10px;
  border-top: 1px solid var(--ttai-border-subtle);
  font-size: 0.83rem;
  font-weight: 700;
  color: var(--ttai-brand-primary);
  text-decoration: none;
}
.ttai-drawer__foot {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--ttai-border-subtle);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 600;
}
.ttai-drawer__foot a {
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--ttai-bg-elevated);
  color: var(--ttai-text-secondary);
  text-align: center;
}

/* ==========================================================================
   5. HOME PAGE SECTIONS (HERO BENTO, TRUST STRIP, PILLARS, INTERACTIVE PROMPT)
   ========================================================================== */
.ttai-section {
  padding-block: 36px;
}
.ttai-section--alt {
  background: var(--ttai-bg-surface);
  border-block: 1px solid var(--ttai-border-subtle);
}
.ttai-home-h1-bar {
  padding-top: 20px;
  padding-bottom: 4px;
}
.ttai-home-h1 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--ttai-text-muted);
  margin: 0;
}

.ttai-bento {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding-block: 18px 28px;
}
@media (min-width: 1024px) {
  .ttai-bento { grid-template-columns: 7fr 5fr; }
}
.ttai-bento__main {
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--ttai-shadow-sm);
}
.ttai-bento__media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #0F172A;
}
.ttai-bento__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.ttai-bento__content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.ttai-bento__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.ttai-pill-cat {
  background: var(--ttai-brand-soft);
  color: var(--ttai-brand-primary);
  font-weight: 700;
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: 6px;
}
.ttai-badge-verified {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--ttai-bg-verified);
  color: var(--ttai-accent-verified);
  font-weight: 600;
  font-size: 0.76rem;
  padding: 3px 9px;
  border-radius: 6px;
  max-width: 100%;
  white-space: normal;
}
.ttai-bento__title {
  font-size: clamp(1.35rem, 1.15rem + 0.9vw, 1.85rem);
  margin: 0;
}
.ttai-bento__title a { color: var(--ttai-text-primary); }
.ttai-bento__title a:hover { color: var(--ttai-brand-primary); }
.ttai-bento__lead {
  color: var(--ttai-text-secondary);
  margin: 0;
  font-size: 0.98rem;
}
.ttai-byline-mini {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 0.83rem;
  color: var(--ttai-text-muted);
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--ttai-border-subtle);
}
.ttai-byline-mini img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.ttai-bento__side {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.ttai-hot-card {
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 14px;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.ttai-hot-card__title {
  font-size: 1.04rem;
  margin: 0;
  line-height: 1.42;
}
.ttai-hot-card__title a { color: var(--ttai-text-primary); }
.ttai-hot-card__title a:hover { color: var(--ttai-brand-primary); }

/* Compact Prompt Grid List on Homepage */
.ttai-prompt-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 640px) {
  .ttai-prompt-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .ttai-prompt-grid { grid-template-columns: repeat(3, 1fr); }
}
.ttai-prompt-card {
  background: var(--ttai-bg-canvas);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 12px;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.ttai-prompt-card:hover {
  border-color: var(--ttai-brand-primary);
  box-shadow: var(--ttai-shadow-sm);
}
.ttai-prompt-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.76rem;
}
.ttai-prompt-card__cat {
  font-weight: 700;
  color: var(--ttai-brand-primary);
}
.ttai-prompt-card__lvl {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--ttai-text-muted);
  background: var(--ttai-bg-elevated);
  padding: 2px 8px;
  border-radius: 5px;
  white-space: nowrap;
}
.ttai-prompt-card__title {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.42;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.ttai-prompt-card__title a {
  color: var(--ttai-text-primary);
}
.ttai-prompt-card__title a:hover {
  color: var(--ttai-brand-primary);
}
.ttai-prompt-card__tools {
  font-size: 0.75rem;
  color: var(--ttai-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ttai-prompt-card__foot {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--ttai-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.ttai-prompt-card__link {
  font-size: 0.82rem;
  font-weight: 600;
}
.ttai-prompt-card__copy {
  min-height: 32px;
  padding: 0 10px;
  border-radius: 6px;
  border: 1px solid var(--ttai-border-strong);
  background: var(--ttai-bg-surface);
  color: var(--ttai-text-primary);
  font-family: var(--ttai-font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.ttai-prompt-card__copy:hover {
  border-color: var(--ttai-brand-primary);
  color: var(--ttai-brand-primary);
}
.ttai-prompt-card__copy.is-copied {
  background: var(--ttai-bg-verified);
  border-color: var(--ttai-accent-verified);
  color: var(--ttai-accent-verified);
}

/* Section A4.5: 6 Cornerstone Pillars Grid (Click Depth = 1) */
.ttai-pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
  gap: 16px;
}
.ttai-pillar-tile {
  background: var(--ttai-bg-surface);
  border: 1.5px solid var(--ttai-border-subtle);
  border-radius: 12px;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.ttai-pillar-tile:hover {
  border-color: var(--ttai-brand-primary);
}
.ttai-pillar-tile__silo {
  font-family: var(--ttai-font-mono);
  font-size: 0.74rem;
  color: var(--ttai-accent-verified);
  font-weight: 600;
}
.ttai-pillar-tile h3 {
  margin: 0;
  font-size: 1rem;
}
.ttai-pillar-tile h3 a { color: var(--ttai-text-primary); }
.ttai-pillar-tile h3 a:hover { color: var(--ttai-brand-primary); }

/* Section Header Bar */
.ttai-sec-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}
.ttai-sec-head h2 { margin: 0; }
.ttai-sec-head__more {
  font-weight: 600;
  font-size: 0.9rem;
}

/* Single Post C4: Interactive Prompt / JSON Box */
.ttai-prompt-box {
  background: var(--ttai-bg-code);
  color: #F1F5F9;
  border-radius: 14px;
  border: 1px solid #334155;
  overflow: hidden;
  margin-block: 22px;
  max-width: 100%;
  min-width: 0;
}
.ttai-prompt-box__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 18px;
  background: rgba(15, 23, 42, 0.85);
  border-bottom: 1px solid #1E293B;
  font-family: var(--ttai-font-mono);
  font-size: 0.78rem;
  color: #94A3B8;
  min-width: 0;
  overflow-wrap: anywhere;
}
.ttai-prompt-box__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.ttai-copy-btn,
.ttai-dl-btn,
.ttai-expand-btn {
  min-height: 44px;
  padding: 0 16px;
  border-radius: 8px;
  border: 1px solid #3B82F6;
  background: #1D4ED8;
  color: #FFFFFF !important;
  font-family: var(--ttai-font-sans);
  font-weight: 600;
  font-size: 0.84rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.ttai-copy-btn.is-copied {
  background: #047857;
  border-color: #34D399;
}
.ttai-dl-btn,
.ttai-expand-btn {
  background: #1E293B;
  border-color: #475569;
}
.ttai-prompt-box__pre {
  margin: 0;
  padding: 20px;
  font-size: 0.875rem;
  line-height: 1.65;
  color: #E2E8F0;
  max-width: 100%;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
  overflow-x: auto;
}
.ttai-prompt-box__pre--collapsible {
  max-height: 420px;
  overflow-y: auto;
}
.ttai-prompt-box__pre--collapsible.is-expanded {
  max-height: none;
}

/* ==========================================================================
   6. STANDARD POST CARDS, BLUEPRINT CARDS & BENCHMARK CARDS
   ========================================================================== */
.ttai-grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 768px) { .ttai-grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .ttai-grid-3 { grid-template-columns: repeat(3, 1fr); } }

.ttai-card {
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 14px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--ttai-shadow-sm);
}
.ttai-card--pillar {
  border: 1.5px solid var(--ttai-brand-primary);
}
.ttai-card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #0F172A;
  overflow: hidden;
}
.ttai-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.ttai-card__asset-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(15, 23, 42, 0.88);
  color: #34D399;
  border: 1px solid rgba(52, 211, 153, 0.45);
  font-family: var(--ttai-font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 6px;
}
.ttai-card__body {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.ttai-card__eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 0.77rem;
  color: var(--ttai-text-muted);
}
.ttai-card__cat {
  font-weight: 700;
  color: var(--ttai-brand-primary);
}
.ttai-card__title {
  font-size: 1.08rem;
  line-height: 1.4;
  margin: 0;
}
.ttai-card__title a { color: var(--ttai-text-primary); }
.ttai-card__title a:hover { color: var(--ttai-brand-primary); }
.ttai-card__excerpt {
  margin: 0;
  font-size: 0.89rem;
  color: var(--ttai-text-secondary);
  line-height: 1.58;
}
.ttai-card__footer {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--ttai-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--ttai-text-muted);
}
.ttai-card__author {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--ttai-text-secondary);
  font-weight: 600;
}
.ttai-card__author img {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
}
.ttai-card__meta-right {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-variant-numeric: tabular-nums;
}

/* Workflow Node Strip & Benchmark Score Bars */
.ttai-node-flow {
  font-family: var(--ttai-font-mono);
  font-size: 0.76rem;
  background: var(--ttai-bg-elevated);
  color: var(--ttai-text-secondary);
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px dashed var(--ttai-border-strong);
}
.ttai-bench-bar {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 6px;
}
.ttai-bench-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  font-weight: 600;
}
.ttai-bench-track {
  flex: 1;
  height: 8px;
  background: var(--ttai-bg-elevated);
  border-radius: 99px;
  overflow: hidden;
}
.ttai-bench-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--ttai-brand-primary), var(--ttai-accent-verified));
  border-radius: 99px;
}

/* Expert Team E-E-A-T Cards */
.ttai-expert-card {
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 16px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.ttai-expert-card__head {
  display: flex;
  align-items: center;
  gap: 16px;
}
.ttai-expert-card__head img {
  width: 84px;
  height: 84px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--ttai-brand-primary);
}
.ttai-expert-card__role {
  font-size: 0.82rem;
  color: var(--ttai-accent-verified);
  font-weight: 700;
}

/* Newsletter Lead Magnet */
.ttai-newsletter {
  background: var(--ttai-bg-code);
  color: #F8FAFC;
  border-radius: 18px;
  padding: 32px;
  border: 1px solid #334155;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: center;
}
@media (min-width: 1024px) {
  .ttai-newsletter { grid-template-columns: 7fr 5fr; padding: 40px; }
}
.ttai-newsletter h2 { color: #F8FAFC; margin-bottom: 10px; }
.ttai-newsletter p { color: #CBD5E1; margin: 0; font-size: 0.95rem; }
.ttai-newsletter__form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.ttai-newsletter__row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.ttai-newsletter__input {
  flex: 1;
  min-width: 220px;
  height: 48px;
  padding: 0 16px;
  border-radius: 10px;
  border: 1px solid #475569;
  background: #111827;
  color: #F8FAFC;
  font-size: 0.95rem;
}
.ttai-newsletter__submit {
  height: 48px;
  padding: 0 22px;
  border-radius: 10px;
  border: none;
  background: #10B981;
  color: #06281E;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
}

/* ==========================================================================
   7. SINGLE POST 3-COLUMN LAYOUT, DUAL-BYLINE, CALLOUTS & DUAL AUTHOR BOX
   ========================================================================== */
.ttai-breadcrumbs {
  padding-block: 14px;
  font-size: 0.83rem;
  color: var(--ttai-text-muted);
}
.ttai-breadcrumbs ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.ttai-breadcrumbs a { color: var(--ttai-text-muted); }
.ttai-breadcrumbs a:hover { color: var(--ttai-brand-primary); }

.ttai-post-header {
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 24px;
}
@media (min-width: 768px) { .ttai-post-header { padding: 32px; } }

.ttai-dual-byline {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--ttai-border-subtle);
  font-size: 0.86rem;
}
.ttai-byline-person {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.ttai-byline-person img {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  object-fit: cover;
}

.ttai-post-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}
@media (min-width: 1024px) {
  .ttai-post-layout { grid-template-columns: 250px minmax(0, 1fr); }
}

.ttai-toc-desktop {
  display: none;
  position: sticky;
  top: 92px;
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 12px;
  padding: 16px;
  max-height: calc(100vh - 116px);
  overflow-y: auto;
}
@media (min-width: 1024px) { .ttai-toc-desktop { display: block; } }

.ttai-toc-progress {
  height: 3px;
  background: var(--ttai-bg-elevated);
  border-radius: 99px;
  margin-bottom: 12px;
  overflow: hidden;
}
.ttai-toc-progress__bar {
  height: 100%;
  width: 0%;
  background: var(--ttai-brand-primary);
  transition: width 0.1s linear;
}
.ttai-toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.82rem;
}
.ttai-toc-list a {
  display: block;
  padding: 5px 8px;
  border-radius: 6px;
  color: var(--ttai-text-secondary);
  line-height: 1.4;
}
.ttai-toc-list a.is-active,
.ttai-toc-list a:hover {
  background: var(--ttai-brand-soft);
  color: var(--ttai-brand-primary);
  font-weight: 600;
}
.ttai-toc-list .is-h3 { padding-left: 18px; font-size: 0.78rem; }

.ttai-mobile-toc {
  display: block;
  background: var(--ttai-bg-elevated);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 10px;
  margin-bottom: 20px;
}
@media (min-width: 1024px) { .ttai-mobile-toc { display: none; } }
.ttai-mobile-toc summary {
  min-height: 52px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 700;
  font-size: 0.92rem;
  cursor: pointer;
}
.ttai-mobile-toc .ttai-toc-list { padding: 0 16px 14px; }

.ttai-article-main {
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 16px;
  padding: 20px;
  min-width: 0;
  max-width: 100%;
  overflow-x: clip;
  overflow-wrap: break-word;
}
@media (min-width: 768px) { .ttai-article-main { padding: 34px; } }

.ttai-prose {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-wrap: break-word;
  word-wrap: break-word;
}
.ttai-prose > * {
  max-width: 100%;
  min-width: 0;
}
.ttai-prose a {
  overflow-wrap: anywhere;
}
.ttai-prose :not(pre) > code {
  background: var(--ttai-bg-elevated);
  border: 1px solid var(--ttai-border-subtle);
  padding: 2px 6px;
  border-radius: 5px;
  font-size: 0.875em;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.ttai-prose pre:not(.ttai-prompt-box__pre) {
  margin-block: 18px;
  padding: 16px 18px;
  background: var(--ttai-bg-code);
  color: #E2E8F0;
  border: 1px solid #334155;
  border-radius: 12px;
  font-size: 0.875rem;
  line-height: 1.65;
  max-width: 100%;
  overflow-x: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.ttai-prose pre code {
  background: transparent;
  border: 0;
  padding: 0;
  color: inherit;
  font-size: inherit;
  white-space: inherit;
  overflow-wrap: inherit;
  word-break: inherit;
}
.ttai-prose p, .ttai-prose ul, .ttai-prose ol, .ttai-table-wrap {
  margin-top: 0;
  margin-bottom: 1.35em;
}
.ttai-prose h2 { margin-top: 1.9em; margin-bottom: 0.65em; }
.ttai-prose h3 { margin-top: 1.5em; margin-bottom: 0.55em; }
.ttai-prose li { margin-bottom: 0.45em; }
.ttai-table-wrap {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.ttai-prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.ttai-prose th, .ttai-prose td {
  border: 1px solid var(--ttai-border-subtle);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
  overflow-wrap: break-word;
}
.ttai-prose th { background: var(--ttai-bg-elevated); font-weight: 700; }

/* Empirical E-E-A-T Callout Boxes inside Articles */
.ttai-sandbox-box {
  background: var(--ttai-bg-verified);
  border: 1px solid var(--ttai-accent-verified);
  border-left: 5px solid var(--ttai-accent-verified);
  border-radius: 10px;
  padding: 18px 20px;
  margin-block: 20px;
  font-size: 0.92rem;
}
.ttai-sandbox-box h4 {
  color: var(--ttai-accent-verified);
  margin-bottom: 10px;
  font-family: var(--ttai-font-mono);
  font-size: 0.86rem;
}
.ttai-sandbox-box ul { margin-bottom: 0; padding-left: 18px; }

.ttai-tldr-box {
  background: var(--ttai-bg-elevated);
  border-left: 4px solid var(--ttai-brand-primary);
  border-radius: 10px;
  padding: 18px 20px;
  margin-block: 20px;
}

.ttai-warning-box {
  background: var(--ttai-bg-warning);
  border: 1px solid var(--ttai-status-warning);
  border-left: 5px solid var(--ttai-status-warning);
  border-radius: 10px;
  padding: 18px 20px;
  margin-block: 22px;
}
.ttai-warning-box h4 {
  color: var(--ttai-status-warning);
  margin-bottom: 8px;
}

.ttai-source-box {
  background: var(--ttai-bg-elevated);
  border: 1px solid var(--ttai-border-strong);
  border-radius: 10px;
  padding: 18px 20px;
  margin-block: 20px;
  font-size: 0.92rem;
}

.ttai-expert-quote {
  background: var(--ttai-brand-soft);
  border-left: 4px solid var(--ttai-brand-primary);
  border-radius: 10px;
  padding: 18px 22px;
  margin-block: 22px;
}

/* Dual Author Verification Box (C8) */
.ttai-dual-authors {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 32px;
  padding-top: 28px;
  border-top: 2px solid var(--ttai-border-subtle);
}
@media (min-width: 768px) {
  .ttai-dual-authors--two { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
}
.ttai-author-box {
  background: var(--ttai-bg-elevated);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 14px;
  padding: 20px;
  font-size: 0.87rem;
  min-width: 0;
  max-width: 100%;
  overflow-wrap: anywhere;
}
.ttai-author-box__tag {
  font-family: var(--ttai-font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--ttai-accent-verified);
  margin-bottom: 10px;
}
.ttai-author-box__top {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 10px;
}
.ttai-author-box__top img {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  object-fit: cover;
}

/* ==========================================================================
   8. SINGLE PAGE VARIANTS (B1 TRUST/BRAND & B2 LEGAL STICKY SIDEBAR)
   ========================================================================== */
.ttai-page-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 28px;
}
@media (min-width: 1024px) {
  .ttai-page-hero { grid-template-columns: 8fr 4fr; align-items: center; }
}
.ttai-legal-seal {
  background: var(--ttai-bg-elevated);
  border: 1.5px solid var(--ttai-accent-verified);
  border-radius: 12px;
  padding: 18px;
  font-size: 0.84rem;
}
.ttai-legal-seal__badge {
  font-family: var(--ttai-font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--ttai-accent-verified);
  margin-bottom: 6px;
}

.ttai-legal-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}
@media (min-width: 1024px) {
  .ttai-legal-layout { grid-template-columns: 270px minmax(0, 1fr); }
}
.ttai-legal-jump-wrap {
  display: block;
  margin-bottom: 18px;
}
.ttai-legal-sidebar {
  display: none;
  position: sticky;
  top: 92px;
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 12px;
  padding: 18px;
}
@media (min-width: 1024px) {
  .ttai-legal-jump-wrap { display: none; }
  .ttai-legal-sidebar { display: block; }
}

/* Contact Page 7/5 Interactive Form & Map */
.ttai-contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-block: 28px;
}
@media (min-width: 1024px) {
  .ttai-contact-grid { grid-template-columns: 7fr 5fr; }
}
.ttai-form-card {
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 16px;
  padding: 28px;
}
.ttai-field {
  margin-bottom: 16px;
}
.ttai-field label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  margin-bottom: 6px;
}
.ttai-field input[type="text"],
.ttai-field input[type="email"],
.ttai-field input[type="tel"],
.ttai-field input[type="url"],
.ttai-field select,
.ttai-field textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--ttai-border-strong);
  background: var(--ttai-bg-canvas);
  color: var(--ttai-text-primary);
  font-family: var(--ttai-font-sans);
  font-size: 0.94rem;
}
.ttai-field textarea { min-height: 120px; resize: vertical; }
.ttai-btn-primary {
  min-height: 48px;
  padding: 0 24px;
  border-radius: 10px;
  border: none;
  background: var(--ttai-brand-primary);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
}
.ttai-btn-primary:hover { background: var(--ttai-brand-hover); }

/* ==========================================================================
   9. ARCHIVE HEADER, PINNED PILLAR, AJAX FILTERS & NUMBERED PAGINATION
   ========================================================================== */
.ttai-archive-head {
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 16px;
  padding: 28px;
  margin-bottom: 20px;
}
.ttai-pinned-pillar {
  background: linear-gradient(135deg, var(--ttai-brand-soft), var(--ttai-bg-verified));
  border: 1.5px solid var(--ttai-brand-primary);
  border-radius: 14px;
  padding: 20px 24px;
  margin-bottom: 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.ttai-subcat-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.ttai-subcat-pill {
  min-height: 44px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  border-radius: 99px;
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-strong);
  color: var(--ttai-text-primary);
  font-weight: 600;
  font-size: 0.86rem;
}
.ttai-subcat-pill.is-active,
.ttai-subcat-pill:hover {
  background: var(--ttai-brand-primary);
  border-color: var(--ttai-brand-primary);
  color: #FFFFFF;
}

.ttai-filter-bar {
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 12px;
  padding: 14px 18px;
  margin-bottom: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.ttai-filter-btn {
  min-height: 44px;
  padding: 0 14px;
  border-radius: 8px;
  border: 1px solid var(--ttai-border-strong);
  background: var(--ttai-bg-canvas);
  color: var(--ttai-text-secondary);
  font-weight: 600;
  font-size: 0.82rem;
  cursor: pointer;
}
.ttai-filter-btn[aria-pressed="true"] {
  background: var(--ttai-brand-primary);
  border-color: var(--ttai-brand-primary);
  color: #FFFFFF;
}

.ttai-pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 36px;
}
.ttai-pagination a,
.ttai-pagination span {
  min-width: 44px;
  min-height: 44px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-strong);
  color: var(--ttai-text-primary);
  font-weight: 600;
  font-size: 0.9rem;
}
.ttai-pagination .current {
  background: var(--ttai-brand-primary);
  border-color: var(--ttai-brand-primary);
  color: #FFFFFF;
}

/* ==========================================================================
   10. COMMENTS WITH EXPERT VERIFICATION BADGE, MEGA FOOTER & SEARCH MODAL
   ========================================================================== */
.ttai-comments {
  margin-top: 32px;
  padding-top: 28px;
  border-top: 2px solid var(--ttai-border-subtle);
}
.ttai-comment-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.ttai-comment-list ul.children {
  list-style: none;
  padding-left: 22px;
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.ttai-comment-item {
  background: var(--ttai-bg-elevated);
  border: 1px solid var(--ttai-border-subtle);
  border-radius: 12px;
  padding: 16px 18px;
}
.ttai-comment-item--expert {
  background: var(--ttai-bg-verified);
  border: 1.5px solid var(--ttai-accent-verified);
}

.ttai-footer {
  background: #0B1120;
  color: #CBD5E1;
  border-top: 1px solid #1E293B;
  padding-block: 48px 32px;
  margin-top: 48px;
  font-size: 0.88rem;
}
.ttai-footer a { color: #CBD5E1; }
.ttai-footer a:hover { color: #60A5FA; }
.ttai-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-bottom: 32px;
  border-bottom: 1px solid #1E293B;
}
@media (min-width: 768px) { .ttai-footer__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .ttai-footer__grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; } }
.ttai-footer h3 {
  color: #F8FAFC;
  font-size: 0.96rem;
  margin-bottom: 14px;
}
.ttai-footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.ttai-footer__nap {
  padding-top: 24px;
  font-size: 0.82rem;
  color: #94A3B8;
  line-height: 1.65;
}

/* Instant Search Modal (Cmd+K) */
.ttai-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100002;
  background: rgba(15, 23, 42, 0.72);
  padding: 60px 16px 24px;
}
.ttai-modal.is-open { display: block; }
.ttai-modal__dialog {
  max-width: 680px;
  margin-inline: auto;
  background: var(--ttai-bg-surface);
  border: 1px solid var(--ttai-border-strong);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--ttai-shadow-md);
}
.ttai-modal__head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--ttai-border-subtle);
}
.ttai-modal__input {
  flex: 1;
  min-height: 44px;
  border: none;
  background: transparent;
  color: var(--ttai-text-primary);
  font-size: 1rem;
  outline: none;
}
.ttai-modal__results {
  max-height: 420px;
  overflow-y: auto;
  padding: 12px;
}
.ttai-search-hit {
  display: block;
  padding: 12px 14px;
  border-radius: 10px;
  color: var(--ttai-text-primary);
}
.ttai-search-hit:hover { background: var(--ttai-bg-elevated); }

/* Print Stylesheet for Legal & Technical Docs (@media print) */
@media print {
  .ttai-topbar, .ttai-header, .ttai-footer, .ttai-legal-sidebar, .ttai-toc-desktop,
  .ttai-mobile-toc, .ttai-newsletter, .ttai-print-hide {
    display: none !important;
  }
  body, .ttai-article-main {
    background: #FFFFFF !important;
    color: #000000 !important;
    border: none !important;
    padding: 0 !important;
  }
  .ttai-legal-layout, .ttai-post-layout {
    display: block !important;
  }
}