/* ==========================================================================
   FAFSA ADVISORS - LUXURY MINIMALIST DESIGN SYSTEM
   Palette: White, Rich Black, Champagne & Metallic Gold
   Aesthetics: Quiet Luxury, Swiss Precision, High-Contrast Financial Advisory
   ========================================================================== */

:root {
  /* Rich Black & Dark Charcoal */
  --black-950: #08090a;
  --black-900: #101216;
  --black-850: #16191f;
  --black-800: #1e222a;
  --black-surface: #14171d;
  --black-card: #181c24;
  --black-border: #2a2f3b;
  --black-border-subtle: #20242e;

  /* Pure White & Alabaster / Ivory */
  --white: #ffffff;
  --off-white: #fafaf9;
  --ivory: #fcfbf8;
  --surface-warm: #f7f6f2;
  --surface-subtle: #f4f4f5;
  --border-light: #e4e4e7;
  --border-hairline: rgba(10, 10, 11, 0.08);

  /* Gold & Champagne System (Ánh Kim & Vàng Gold Cao Cấp) */
  --gold-50: #fdfbf7;
  --gold-100: #f7f0e3;
  --gold-200: #eddac0;
  --gold-300: #dfc095;
  --gold-400: #d1a66b;
  --gold-500: #be8a40;
  --gold-600: #a7722d;
  --gold-700: #88571c;
  --gold-gradient: linear-gradient(135deg, #e4c594 0%, #be8a40 50%, #9c6722 100%);
  --gold-gradient-hover: linear-gradient(135deg, #ecd3a9 0%, #cb974c 50%, #a8722c 100%);
  --gold-gradient-subtle: linear-gradient(135deg, rgba(228, 197, 148, 0.12) 0%, rgba(190, 138, 64, 0.04) 100%);
  --gold-border: rgba(190, 138, 64, 0.38);
  --gold-border-subtle: rgba(190, 138, 64, 0.2);
  --gold-glow: 0 4px 20px rgba(190, 138, 64, 0.28);
  --gold-glow-lg: 0 8px 32px rgba(190, 138, 64, 0.38);

  /* Text & Hierarchy */
  --text-primary: #0a0a0b;
  --text-secondary: #4a4d55;
  --text-muted: #71717a;
  --text-light-primary: #f4f4f5;
  --text-light-secondary: #a1a1aa;
  --text-light-muted: #71717a;

  /* Typography & Layout */
  --font-sans: "Be Vietnam Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.09);
  --shadow-dark: 0 16px 40px rgba(0, 0, 0, 0.5);

  --header-height: 64px;
  --bottom-bar-height: 62px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 12px);
  scroll-padding-bottom: calc(var(--bottom-bar-height) + 20px);
}

body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font-sans);
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--text-primary);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  padding-bottom: calc(var(--bottom-bar-height) + env(safe-area-inset-bottom) + 20px);
}

body.dialog-open {
  overflow: hidden;
}

img, svg {
  display: block;
}

img {
  max-width: 100%;
}

button, input, select {
  font: inherit;
}

/* Accessibility */
.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;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 2000;
  padding: 8px 14px;
  background: var(--black-950);
  color: var(--white);
  border: 1px solid var(--gold-500);
  border-radius: var(--radius-sm);
  transform: translateY(-150%);
  transition: transform 200ms ease;
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 2px;
}

/* Container */
.container {
  width: min(100% - 32px, 1120px);
  margin-inline: auto;
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--header-height);
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--border-hairline);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: background-color 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}

.site-header.is-scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  border-bottom-color: var(--border-light);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--black-950);
}

.brand-logo-img {
  height: 38px;
  width: auto;
  max-width: 175px;
  object-fit: contain;
  display: block;
  transition: opacity 160ms ease, transform 160ms ease;
}

.brand-logo-img:hover {
  opacity: 0.92;
  transform: scale(1.02);
}

@media (max-width: 400px) {
  .brand-logo-img {
    height: 32px;
    max-width: 140px;
  }
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--black-900), var(--black-950));
  color: var(--gold-300);
  border-radius: 9px;
  border: 1px solid rgba(190, 138, 64, 0.3);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.brand-mark svg {
  width: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
}

.brand strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  line-height: 1.1;
  color: var(--black-950);
}

.brand small {
  display: block;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--gold-600);
  text-transform: uppercase;
}

.desktop-nav {
  display: none;
  gap: 24px;
}

.desktop-nav a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 600;
  transition: color 150ms ease;
  letter-spacing: 0.01em;
}

.desktop-nav a:hover,
.desktop-nav a.active {
  color: var(--gold-600);
}

@media (min-width: 820px) {
  .desktop-nav {
    display: flex;
  }
}

.header-cta {
  padding: 8px 16px;
  font-size: 0.8rem;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: var(--radius-pill);
  background: var(--black-950);
  color: var(--gold-300);
  border: 1px solid var(--gold-500);
  text-decoration: none;
  transition: all 180ms ease;
}

.header-cta:hover {
  background: var(--gold-gradient);
  color: var(--black-950);
  box-shadow: var(--gold-glow);
  transform: translateY(-1px);
}

.header-cta svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.5;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 700;
  transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease, border-color 160ms ease;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.button:active {
  transform: scale(0.98);
}

.button-primary {
  background: var(--black-950);
  color: var(--white);
  border: 1px solid var(--black-800);
}

.button-primary:hover {
  background: var(--black-850);
}

.button-accent {
  background: var(--gold-gradient);
  color: var(--black-950);
  font-weight: 800;
  box-shadow: var(--gold-glow);
  border: 1px solid rgba(228, 197, 148, 0.4);
}

.button-accent:hover {
  background: var(--gold-gradient-hover);
  box-shadow: var(--gold-glow-lg);
  transform: translateY(-2px);
}

.button-large {
  padding: 15px 24px;
  font-size: 0.95rem;
  border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
}

.button-submit-giant {
  width: 100%;
  padding: 16px 22px;
  font-size: 1.02rem;
  border-radius: var(--radius-md);
  letter-spacing: 0.02em;
  text-align: center;
}

.button-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-light);
  border-radius: var(--radius-pill);
  padding: 10px 18px;
  font-size: 0.85rem;
}

.button-ghost:hover {
  background: var(--surface-subtle);
  color: var(--text-primary);
}

.button-block {
  width: 100%;
}

/* ==========================================================================
   HERO SECTION (LUXURY HIGH-CONTRAST DARK THEME)
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 40px 0 44px;
  background:
    radial-gradient(ellipse 80% 60% at 50% -10%, #1a1e27 0%, var(--black-950) 100%);
  color: var(--white);
  border-bottom: 1px solid var(--black-border);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(50px);
}

.hero-glow-one {
  top: -100px;
  right: -80px;
  width: 260px;
  height: 260px;
  background: rgba(190, 138, 64, 0.12);
}

.hero-glow-two {
  bottom: -80px;
  left: -80px;
  width: 240px;
  height: 240px;
  background: rgba(228, 197, 148, 0.08);
}

.hero-copy.centered {
  text-align: center;
  max-width: 820px;
  margin-inline: auto;
  position: relative;
  z-index: 2;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: rgba(190, 138, 64, 0.12);
  color: var(--gold-300);
  border: 1px solid rgba(190, 138, 64, 0.3);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.live-dot {
  width: 7px;
  height: 7px;
  background: var(--gold-400);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(209, 166, 107, 0.25);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.6; }
}

.hero-title {
  margin: 0 0 16px;
  font-size: clamp(1.65rem, 5.5vw, 2.75rem);
  font-weight: 900;
  line-height: 1.24;
  color: var(--white);
  letter-spacing: -0.02em;
}

.text-gradient {
  background: linear-gradient(135deg, #fafaf9 0%, #e4c594 45%, #be8a40 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  margin: 0 0 24px;
  font-size: clamp(0.95rem, 2.5vw, 1.1rem);
  color: var(--text-light-secondary);
  line-height: 1.65;
  max-width: 680px;
  margin-inline: auto;
}

.hero-schedule-wrapper {
  margin: 20px 0 26px;
  padding: 16px 16px;
  background: rgba(20, 23, 29, 0.65);
  border: 1px solid rgba(190, 138, 64, 0.25);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-dark);
}

.hero-schedule-title {
  display: block;
  font-size: 0.74rem;
  font-weight: 800;
  color: var(--gold-300);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.hero-session-badges {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

@media (min-width: 620px) {
  .hero-session-badges {
    flex-direction: row;
    justify-content: center;
  }
}

.session-pill {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 16px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-light-primary);
  text-decoration: none;
  font-size: 0.82rem;
  transition: all 160ms ease;
}

.session-pill:hover {
  background: rgba(190, 138, 64, 0.12);
  border-color: var(--gold-500);
  transform: translateY(-1px);
}

.session-pill .pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-400);
  flex-shrink: 0;
}

.session-pill strong {
  color: var(--gold-300);
  font-weight: 800;
}

.session-pill .pill-arrow {
  color: var(--gold-400);
  font-weight: 800;
}

.hero-actions.centered-actions {
  display: flex;
  justify-content: center;
  margin-top: 24px;
}

.button-cta-hero {
  box-shadow: var(--gold-glow);
}

.button-cta-hero svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.4;
  transition: transform 160ms ease;
}

.button-cta-hero:hover svg {
  transform: translateX(3px);
}

.trust-row.centered-trust {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: 18px;
  font-size: 0.78rem;
  color: var(--text-light-muted);
}

.trust-row span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.trust-row svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: var(--gold-400);
  stroke-width: 2.2;
}

/* ==========================================================================
   GENERIC SECTION HEADINGS
   ========================================================================== */
.section {
  padding: 48px 0;
}

@media (min-width: 768px) {
  .section {
    padding: 64px 0;
  }
}

.section-heading.centered {
  text-align: center;
  max-width: 760px;
  margin-inline: auto;
  margin-bottom: 32px;
}

.section-kicker {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 800;
  color: var(--gold-600);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.section-kicker-light {
  color: var(--gold-500);
}

.section-heading h2 {
  margin: 0 0 12px;
  font-size: clamp(1.4rem, 4vw, 2.1rem);
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.3;
  letter-spacing: -0.015em;
}

.section-desc {
  margin: 0;
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ==========================================================================
   SECTION 1: CẢNH BÁO RỦI RO (noi-dung)
   Pure White Minimalist, Hairline Borders, Gold Subtle Accents
   ========================================================================== */
.section-risk {
  background: var(--white);
}

.risk-cards-grid {
  display: grid;
  gap: 16px;
}

@media (min-width: 768px) {
  .risk-cards-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
}

.risk-mobile-card {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.risk-mobile-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--gold-border);
}

.risk-card-top {
  display: flex;
  align-items: center;
  margin-bottom: 14px;
}

.risk-icon {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: var(--gold-50);
  border: 1px solid rgba(190, 138, 64, 0.22);
  color: var(--gold-600);
}

.risk-icon svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
}

.risk-card-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--black-950);
  margin: 0 0 8px;
  line-height: 1.35;
}

.risk-card-body {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   SECTION 2: CHIẾN LƯỢC & SO SÁNH (so-sanh)
   Clean Alabaster Surface with High-Contrast Dark-Gold Strategy Highlights
   ========================================================================== */
.section-strategy {
  background: var(--surface-warm);
  border-top: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
}

.strategy-block {
  margin-bottom: 40px;
}

.strategy-block:last-child {
  margin-bottom: 0;
}

.strategy-block-header {
  margin-bottom: 22px;
}

.step-pill {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--black-950);
  color: var(--gold-300);
  border: 1px solid rgba(190, 138, 64, 0.4);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.strategy-block-header h3 {
  margin: 0 0 6px;
  font-size: clamp(1.2rem, 3.5vw, 1.55rem);
  font-weight: 900;
  color: var(--black-950);
  line-height: 1.35;
}

.strategy-lead-text {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

/* Triad Comparison Cards ($40k savings) */
.comparison-cards-triad {
  display: grid;
  gap: 16px;
}

@media (min-width: 768px) {
  .comparison-cards-triad {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
}

.triad-card {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.triad-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.triad-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: flex-start;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: var(--surface-subtle);
  color: var(--text-secondary);
  font-size: 0.73rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.triad-name {
  margin: 0 0 14px;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--black-950);
  line-height: 1.3;
}

.triad-rate-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: var(--surface-warm);
  border-radius: 8px;
  margin-bottom: 10px;
}

.triad-rate-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
}

.triad-rate-val {
  font-size: 1.15rem;
  font-weight: 900;
}

.triad-result-box {
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--surface-subtle);
  margin-bottom: 14px;
}

.triad-loss-label {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 3px;
}

.triad-loss-val {
  font-size: 0.88rem;
  font-weight: 800;
}

.triad-desc {
  margin: 0;
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-top: auto;
}

/* Specific Triad Accents */
.text-red {
  color: var(--black-950);
}

.text-amber {
  color: var(--text-secondary);
}

.text-green {
  color: var(--gold-400);
}

/* Featured Strategy Card (Optimal 0% FAFSA) */
.triad-best {
  background: var(--black-950);
  color: var(--white);
  border: 1.5px solid var(--gold-500);
  box-shadow: 0 12px 36px rgba(190, 138, 64, 0.22);
}

.triad-best .triad-name {
  color: var(--white);
}

.triad-badge-best {
  background: var(--gold-gradient);
  color: var(--black-950);
  font-weight: 900;
}

.triad-best .triad-rate-box {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(190, 138, 64, 0.3);
}

.triad-best .triad-rate-label {
  color: var(--gold-300);
}

.triad-best .triad-rate-val {
  color: var(--gold-300);
}

.triad-best .triad-result-box {
  background: rgba(190, 138, 64, 0.12);
  border: 1px solid rgba(190, 138, 64, 0.3);
}

.triad-best .triad-loss-label {
  color: var(--gold-300);
}

.triad-best .triad-loss-val {
  color: var(--gold-300);
}

.triad-best .triad-desc {
  color: var(--text-light-secondary);
}

/* Key Questions / Points */
.tools-key-points {
  display: grid;
  gap: 12px;
}

.key-point-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 18px;
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  font-size: 0.88rem;
  line-height: 1.6;
}

.key-point-icon {
  font-size: 1.2rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.key-point-item strong {
  display: block;
  font-size: 0.95rem;
  color: var(--black-950);
  margin-bottom: 2px;
  font-weight: 800;
}

.key-point-item span {
  color: var(--text-secondary);
}

.key-point-highlight {
  background: var(--gold-50);
  border: 1.5px solid var(--gold-500);
  box-shadow: 0 4px 16px rgba(190, 138, 64, 0.14);
}

.key-point-highlight strong {
  color: var(--gold-700);
}

/* Part 3: Roadmap Steps (High-Contrast Dark Theme) */
.roadmap-block {
  padding: 26px 20px;
  background: var(--black-950);
  color: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--black-border);
  box-shadow: var(--shadow-dark);
}

.roadmap-block .strategy-block-header h3 {
  color: var(--white);
}

.roadmap-block .strategy-lead-text {
  color: var(--text-light-secondary);
}

.roadmap-steps-list {
  display: grid;
  gap: 14px;
}

.roadmap-step-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  transition: border-color 160ms ease, background 160ms ease;
}

.roadmap-step-item:hover {
  border-color: rgba(190, 138, 64, 0.4);
  background: rgba(255, 255, 255, 0.06);
}

.step-number {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--gold-gradient);
  color: var(--black-950);
  font-weight: 900;
  font-size: 0.95rem;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(190, 138, 64, 0.35);
}

.step-content h4 {
  margin: 0 0 4px;
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1.35;
}

.step-content p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-light-secondary);
  line-height: 1.55;
}

/* ==========================================================================
   SECTION 3: CHUYÊN GIA ĐỒNG HÀNH (chuyen-gia)
   Pure White Canvas, Gold Ring Avatars, VIP Centered Trust Banner
   ========================================================================== */
.section-expert {
  background: var(--white);
}

.expert-cards-grid {
  display: grid;
  gap: 18px;
}

@media (min-width: 820px) {
  .expert-cards-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }
}

.expert-card {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.expert-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--gold-border);
}

.expert-card-top {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 0;
}

.expert-avatar {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2.5px solid var(--gold-500);
  box-shadow: 0 4px 14px rgba(190, 138, 64, 0.25);
}

.expert-meta {
  flex: 1;
}

.expert-name {
  margin: 0 0 4px;
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--black-950);
  line-height: 1.25;
}

.expert-role-highlight {
  margin: 0 0 2px;
  font-size: 0.74rem;
  font-weight: 800;
  color: var(--gold-600);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1.35;
}

.expert-role-sub {
  margin: 0;
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 500;
  line-height: 1.35;
}

/* VIP Centered Trust Banner */
.expert-trust-banner {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 26px;
  padding: 14px 24px;
  background: var(--black-950);
  color: var(--white);
  border: 1px solid rgba(190, 138, 64, 0.4);
  border-radius: var(--radius-pill);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
  max-width: 440px;
  margin-left: auto;
  margin-right: auto;
}

.trust-banner-item {
  text-align: center;
}

.trust-banner-item strong {
  display: block;
  font-size: 1rem;
  font-weight: 800;
  color: var(--gold-300);
  margin-bottom: 2px;
  letter-spacing: 0.02em;
}

.trust-banner-item span {
  font-size: 0.8rem;
  color: var(--text-light-secondary);
}

/* ==========================================================================
   SECTION 4: LỊCH TRÌNH WORKSHOP (lich-trinh)
   Deep Black Canvas, Gold Interactive Card Selectors
   ========================================================================== */
.section-schedule {
  background: var(--black-950);
  color: var(--white);
  border-top: 1px solid var(--black-border);
  border-bottom: 1px solid var(--black-border);
}

.section-schedule .section-heading h2 {
  color: var(--white);
}

.section-schedule .section-desc {
  color: var(--text-light-secondary);
}

.schedule-mobile-grid {
  display: grid;
  gap: 16px;
  max-width: 780px;
  margin-inline: auto;
}

@media (min-width: 640px) {
  .schedule-mobile-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.schedule-card-interactive {
  background: var(--black-card);
  border: 1.5px solid var(--black-border);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  text-align: left;
  color: var(--white);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  transition: all 180ms ease;
  box-shadow: var(--shadow-dark);
}

.schedule-card-interactive:hover {
  border-color: var(--gold-border);
  background: #1c212a;
  transform: translateY(-2px);
}

.schedule-card-interactive:focus-visible {
  border-color: var(--gold-500);
  box-shadow: 0 0 0 3px rgba(190, 138, 64, 0.3);
}

.sched-card-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: rgba(190, 138, 64, 0.14);
  color: var(--gold-300);
  border: 1px solid rgba(190, 138, 64, 0.3);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
  align-self: flex-start;
}

.sched-card-time strong {
  display: block;
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1.25;
  margin-bottom: 4px;
}

.sched-hour {
  display: block;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--gold-400);
}

.sched-note {
  margin: 10px 0 16px;
  font-size: 0.78rem;
  color: var(--text-light-muted);
}

.sched-action-btn {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--text-light-primary);
  transition: all 160ms ease;
}

.schedule-card-interactive:hover .sched-action-btn {
  background: var(--gold-gradient);
  color: var(--black-950);
  border-color: transparent;
  box-shadow: 0 4px 12px rgba(190, 138, 64, 0.3);
}

/* ==========================================================================
   SECTION 5: FORM ĐĂNG KÝ (dang-ky)
   Private Wealth Banking Style: Crisp Clean Form, Gold Focus Rings & CTA
   ========================================================================== */
.section-registration {
  background: var(--surface-warm);
}

.registration-card,
.registration-form-wrap {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  box-shadow: var(--shadow-lg);
  max-width: 680px;
  margin-inline: auto;
}

@media (min-width: 600px) {
  .registration-card,
  .registration-form-wrap {
    padding: 38px 36px;
  }
}

.form-header,
.form-title-head {
  text-align: center;
  margin-bottom: 26px;
}

.form-step-badge,
.badge-free {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: var(--black-950);
  color: var(--gold-300);
  border: 1px solid rgba(190, 138, 64, 0.4);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.form-header h2,
.form-title-head h3 {
  margin: 0 0 8px;
  font-size: clamp(1.35rem, 3.5vw, 1.8rem);
  font-weight: 900;
  color: var(--black-950);
  line-height: 1.25;
}

.form-header p,
.form-lead-desc {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.form-section-card {
  background: var(--surface-warm);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 20px 18px;
  margin-bottom: 18px;
  transition: border-color 160ms ease;
}

.form-section-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.form-step-num {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--black-950);
  color: var(--gold-300);
  font-weight: 900;
  font-size: 0.82rem;
  display: grid;
  place-items: center;
  border: 1px solid rgba(190, 138, 64, 0.35);
  flex-shrink: 0;
}

.form-section-head h4 {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--black-950);
}

.req,
.field-req {
  color: var(--gold-600);
  font-weight: 800;
}

.form-fields-stack,
.field-stack {
  display: grid;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
}

.field:last-child {
  margin-bottom: 0;
}

.field label,
.field-label {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--black-950);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.field-help,
.field-hint {
  font-size: 0.74rem;
  color: var(--text-muted);
  margin-top: -2px;
}

.field-grid-2 {
  display: grid;
  gap: 14px;
}

@media (min-width: 600px) {
  .field-grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.field input,
.input {
  width: 100%;
  padding: 13px 15px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-light);
  background: var(--white);
  color: var(--black-950);
  font-size: 0.94rem;
  transition: border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.field input::placeholder,
.input::placeholder {
  color: #a1a1aa;
}

.field input:focus,
.input:focus {
  outline: none;
  border-color: var(--gold-500);
  box-shadow: 0 0 0 3px rgba(190, 138, 64, 0.18);
  background: var(--white);
}

.field input.is-invalid,
.input.is-invalid {
  border-color: #ef4444;
  background: #fffafa;
}

.field-error {
  font-size: 0.76rem;
  color: #dc2626;
  font-weight: 700;
  min-height: 16px;
  margin: 2px 0 0;
}

/* Radio Pill Group (Grade Selector) */
.radio-pill-group,
.grade-options-group {
  border: 0;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 9px;
}

@media (min-width: 520px) {
  .radio-pill-group,
  .grade-options-group {
    grid-template-columns: repeat(2, 1fr);
  }
}

.radio-pill,
.radio-option-card {
  position: relative;
  display: flex;
  align-items: center;
  padding: 13px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-light);
  background: var(--white);
  cursor: pointer;
  transition: all 160ms ease;
  user-select: none;
}

.radio-pill:hover,
.radio-option-card:hover {
  background: var(--gold-50);
  border-color: var(--gold-border);
}

.radio-pill input[type="radio"],
.radio-option-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.radio-pill-box,
.radio-dot-ui {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1.5px solid #a1a1aa;
  margin-right: 12px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  transition: all 160ms ease;
}

.radio-pill-box::after,
.radio-dot-ui::after {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold-400);
  transform: scale(0);
  transition: transform 160ms ease;
}

.radio-pill-text,
.radio-text-wrap {
  display: flex;
  flex-direction: column;
}

.radio-pill-text strong,
.radio-text-wrap strong {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--black-950);
  line-height: 1.3;
}

.radio-pill-text small,
.radio-text-wrap small {
  font-size: 0.74rem;
  color: var(--text-muted);
  line-height: 1.3;
}

.radio-pill:has(input[type="radio"]:checked),
.radio-option-card:has(input[type="radio"]:checked) {
  background: var(--black-950);
  border-color: var(--black-950);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
}

.radio-pill:has(input[type="radio"]:checked) .radio-pill-box,
.radio-option-card:has(input[type="radio"]:checked) .radio-dot-ui {
  border-color: var(--gold-400);
}

.radio-pill:has(input[type="radio"]:checked) .radio-pill-box::after,
.radio-option-card:has(input[type="radio"]:checked) .radio-dot-ui::after {
  transform: scale(1);
  background: var(--gold-400);
}

.radio-pill:has(input[type="radio"]:checked) .radio-text-wrap strong {
  color: var(--white);
}

.radio-pill:has(input[type="radio"]:checked) .radio-text-wrap small {
  color: var(--gold-300);
}

.radio-option-card:has(input[type="radio"]:focus-visible) {
  outline: 2px solid var(--gold-500);
  outline-offset: 2px;
}

/* Session Picker Group */
.session-radio-group {
  border: 0;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.session-pick-card {
  position: relative;
  display: flex;
  align-items: center;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--border-light);
  background: var(--white);
  cursor: pointer;
  transition: all 160ms ease;
}

.session-pick-card:hover {
  border-color: var(--gold-border);
  background: var(--gold-50);
}

.session-pick-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.session-badge-mini {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: rgba(190, 138, 64, 0.12);
  color: var(--gold-600);
  border: 1px solid rgba(190, 138, 64, 0.3);
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
  align-self: flex-start;
}

.session-pick-body {
  display: flex;
  flex-direction: column;
}

.session-pick-body strong {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--black-950);
  line-height: 1.3;
}

.session-pick-body small {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.session-pick-card:has(input[type="radio"]:checked) {
  background: var(--black-950);
  border-color: var(--black-950);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
}

.session-pick-card:has(input[type="radio"]:checked) .radio-dot-ui {
  border-color: var(--gold-400);
}

.session-pick-card:has(input[type="radio"]:checked) .radio-dot-ui::after {
  transform: scale(1);
  background: var(--gold-400);
}

.session-pick-card:has(input[type="radio"]:checked) .session-badge-mini {
  background: var(--gold-gradient);
  color: var(--black-950);
  font-weight: 900;
  border-color: transparent;
}

.session-pick-card:has(input[type="radio"]:checked) .session-pick-body strong {
  color: var(--white);
}

.session-pick-card:has(input[type="radio"]:checked) .session-pick-body small {
  color: var(--gold-300);
}

/* Submit Button & Guarantee */
.form-submit-wrap,
.form-submit-block {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.button-submit-giant {
  width: 100%;
  padding: 17px 24px;
  font-size: 1.02rem;
  font-weight: 900;
  border-radius: var(--radius-md);
  background: var(--gold-gradient);
  color: var(--black-950);
  box-shadow: var(--gold-glow);
  border: 1px solid rgba(228, 197, 148, 0.4);
  letter-spacing: 0.02em;
  text-align: center;
}

.button-submit-giant:hover {
  background: var(--gold-gradient-hover);
  box-shadow: var(--gold-glow-lg);
  transform: translateY(-2px);
}

.button-submit-giant.is-loading {
  opacity: 0.85;
  cursor: wait;
}

.form-guarantee,
.form-commitment-text {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--gold-50);
  border: 1px solid rgba(190, 138, 64, 0.2);
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}

.form-guarantee strong,
.form-commitment-text strong {
  color: var(--gold-700);
  font-weight: 800;
  flex-shrink: 0;
}

.form-guarantee svg,
.form-commitment-text svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: var(--gold-600);
  stroke-width: 2.2;
  flex-shrink: 0;
}

/* Error Summary */
.form-error-summary,
.error-summary {
  background: #fef2f2;
  border: 1.5px solid #fecaca;
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin-bottom: 22px;
  color: #991b1b;
  font-size: 0.88rem;
  line-height: 1.55;
}

.form-error-summary h3,
.error-summary strong {
  display: block;
  margin: 0 0 6px;
  font-size: 0.95rem;
  font-weight: 800;
  color: #991b1b;
}

.form-error-summary ul,
.error-summary ul {
  margin: 0;
  padding-left: 20px;
}

/* ==========================================================================
   SECTION 6: CÂU HỎI THƯỜNG GẶP (faq)
   Clean Minimalist Accordion with Gold Expand Icons
   ========================================================================== */
.section-faq {
  background: var(--white);
}

.faq-mobile-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 780px;
  margin-inline: auto;
}

.accordion-mobile details {
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  transition: all 160ms ease;
}

.accordion-mobile details:hover {
  border-color: var(--gold-border);
}

.accordion-mobile details[open] {
  background: var(--gold-50);
  border-color: var(--gold-border);
}

.accordion-mobile summary {
  cursor: pointer;
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--black-950);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion-mobile summary::-webkit-details-marker {
  display: none;
}

.accordion-mobile summary span::after {
  content: "+";
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--gold-600);
}

.accordion-mobile details[open] summary span::after {
  content: "−";
}

.accordion-mobile p {
  margin: 12px 0 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}



/* ==========================================================================
   APP-LIKE FIXED BOTTOM TAB BAR
   High-End Frosted Glass, Black Icons, Gold Active Indicator
   ========================================================================== */
.app-bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.94);
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding-bottom: env(safe-area-inset-bottom);
}

.app-tab-container {
  display: flex;
  align-items: center;
  justify-content: space-around;
  height: var(--bottom-bar-height);
  max-width: 520px;
  margin-inline: auto;
  padding: 0 8px;
}

.app-tab-item {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  flex: 1;
  height: 100%;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: color 150ms ease;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.app-tab-item:hover,
.app-tab-item:focus-visible {
  color: var(--black-950);
}

.app-tab-icon svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.1;
  transition: transform 150ms ease, stroke 150ms ease;
}

.app-tab-item.active {
  color: var(--black-950);
  font-weight: 900;
}

.app-tab-item.active::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 3px;
  border-radius: 0 0 4px 4px;
  background: var(--gold-500);
}

.app-tab-item.active .app-tab-icon svg {
  stroke: var(--gold-600);
  transform: scale(1.08);
}

/* CTA Tab Button (Đăng Ký) */
.app-tab-cta {
  color: var(--black-950);
}

.app-tab-cta .app-tab-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gold-gradient);
  display: grid;
  place-items: center;
  box-shadow: 0 2px 8px rgba(190, 138, 64, 0.35);
  margin-bottom: -1px;
}

.app-tab-cta .app-tab-icon svg {
  width: 17px;
  height: 17px;
  stroke: var(--black-950);
  stroke-width: 2.5;
}

.app-tab-cta .app-tab-label {
  color: var(--gold-700);
  font-weight: 900;
}

.app-tab-cta.active::before {
  display: none;
}

/* ==========================================================================
   SUCCESS DIALOG
   ========================================================================== */
.success-dialog {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  max-width: 440px;
  background: var(--white);
  box-shadow: var(--shadow-dark);
  text-align: center;
}

.success-dialog::backdrop {
  background: rgba(8, 9, 10, 0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.success-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gold-50);
  border: 2px solid var(--gold-500);
  color: var(--gold-600);
  display: grid;
  place-items: center;
  margin: 0 auto 16px;
  box-shadow: 0 4px 16px rgba(190, 138, 64, 0.25);
}

.success-icon svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.8;
}

.success-kicker {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 800;
  color: var(--gold-600);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.success-dialog h2 {
  margin: 0 0 10px;
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--black-950);
}

.success-dialog p {
  margin: 0 0 18px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.success-summary {
  background: var(--surface-warm);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 0.84rem;
  text-align: left;
  line-height: 1.6;
  margin-bottom: 22px;
  color: var(--black-950);
}

.success-summary strong {
  color: var(--black-950);
}