/* ============================================================
   YALLA HACK - Premium Cybersecurity Design System
   Brand: Securing Tomorrow's Enterprise.
   Aesthetic: light sky blue intelligence, clean glassmorphism,
   professional enterprise grade with modern interactive UI.
   ============================================================ */

/* ----- Reset & Base ----- */
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}
*, *::before, *::after { box-sizing: border-box; }
img, video { max-width: 100%; height: auto; }
::selection { background: var(--yh-primary-020); color: #fff; }

:focus-visible {
    outline: 2px solid var(--yh-ring);
    outline-offset: 2px;
    border-radius: var(--yh-radius-sm);
}
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--yh-ring);
    outline-offset: 2px;
}

/* ----- Design Tokens ----- */
:root {
    --yh-background: #F0F6FC;
    --yh-background-deep: #E4EEF7;
    --yh-foreground: #0B1120;
    --yh-surface: #FFFFFF;
    --yh-surface-elevated: #F4F9FF;
    --yh-card: #FFFFFF;
    --yh-card-foreground: #0B1120;

    --yh-primary: #0085FF;
    --yh-primary-foreground: #FFFFFF;
    --yh-primary-glow: #4A9EF5;
    --yh-secondary: #E6EDF4;
    --yh-secondary-foreground: #1A2436;
    --yh-muted: #E6EDF4;
    --yh-muted-foreground: #5A6B80;
    --yh-accent: #0085FF;
    --yh-success: #059669;
    --yh-destructive: #DC2626;
    --yh-border: rgba(0, 0, 0, 0.06);
    --yh-border-strong: rgba(0, 0, 0, 0.12);
    --yh-input: #FFFFFF;
    --yh-ring: #0085FF;

    --yh-radius-sm: 6px;
    --yh-radius-md: 10px;
    --yh-radius-lg: 16px;
    --yh-radius-xl: 22px;
    --yh-radius-2xl: 28px;

    --yh-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --yh-ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --yh-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --yh-duration-fast: 150ms;
    --yh-duration-normal: 300ms;
    --yh-duration-slow: 500ms;

    --yh-font-sans: "Plus Jakarta Sans", "Outfit", system-ui, -apple-system, "Segoe UI", sans-serif;
    --yh-font-display: "Outfit", "Plus Jakarta Sans", sans-serif;
    --yh-font-serif: "Instrument Serif", Georgia, serif;
    --yh-font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

    --yh-shadow-glow: 0 0 40px -10px rgba(0, 133, 255, 0.25);
    --yh-shadow-glow-strong: 0 0 80px -20px rgba(0, 133, 255, 0.4);
    --yh-shadow-elevated: 0 20px 60px -20px rgba(0, 0, 0, 0.12);
    --yh-gradient-cyan: linear-gradient(135deg, #0085FF, #4A9EF5);
    --yh-gradient-text: linear-gradient(135deg, #0B1120 0%, #0085FF 100%);
    --yh-asset-logo: url("assets/template-v2/yalla-hack-logo.png?v=14");
    --yh-grid-line: rgba(0, 133, 255, 0.06);
    --yh-ease: cubic-bezier(0.2, 0.8, 0.2, 1);

    --yh-primary-010: rgba(0, 133, 255, 0.1);
    --yh-primary-015: rgba(0, 133, 255, 0.15);
    --yh-primary-020: rgba(0, 133, 255, 0.2);
    --yh-primary-025: rgba(0, 133, 255, 0.25);
    --yh-primary-030: rgba(0, 133, 255, 0.3);
    --yh-primary-005: rgba(0, 133, 255, 0.05);
    --yh-primary-0025: rgba(0, 133, 255, 0.025);
    --yh-primary-006: rgba(0, 133, 255, 0.06);
    --yh-primary-008: rgba(0, 133, 255, 0.08);
    --yh-primary-050: rgba(0, 133, 255, 0.5);
    --yh-primary-070: rgba(0, 133, 255, 0.7);
    --yh-primary-080: rgba(0, 133, 255, 0.8);
    --yh-primary-090: rgba(0, 133, 255, 0.9);
    --yh-primary-028: rgba(0, 133, 255, 0.28);
    --yh-primary-007: rgba(0, 133, 255, 0.07);
    --yh-primary-004: rgba(0, 133, 255, 0.04);
    --yh-primary-003: rgba(0, 133, 255, 0.03);
    --yh-primary-002: rgba(0, 133, 255, 0.02);
    --yh-primary-001: rgba(0, 133, 255, 0.01);

    /* RGB variants — MUST be declared before any rgba(var(...)) usage below */
    --yh-background-rgb: 240, 246, 252;
    --yh-foreground-rgb: 11, 17, 32;
    --yh-surface-rgb: 255, 255, 255;
    --yh-card-rgb: 255, 255, 255;
    --yh-primary-rgb: 0, 133, 255;

    --yh-surface-glass: rgba(var(--yh-surface-rgb), 0.55);
    --yh-surface-glass-md: rgba(var(--yh-surface-rgb), 0.75);
    --yh-surface-glass-hi: rgba(var(--yh-surface-rgb), 0.88);
    --yh-surface-glass-lo: rgba(var(--yh-surface-rgb), 0.35);
    --yh-muted-border: rgba(108, 128, 148, 0.18);
    --yh-muted-border-lo: rgba(108, 128, 148, 0.08);
    --yh-muted-border-hi: rgba(108, 128, 148, 0.22);
    --yh-text-muted: #5A6B80;
    --yh-text-muted-dark: #3D4B5C;
    --yh-shadow-black: rgba(var(--yh-foreground-rgb), 0.07);
    --yh-glow-primary: rgba(var(--yh-primary-rgb), 0.3);
    --yh-glow-secondary: rgba(var(--yh-primary-rgb), 0.12);

    /* Theme transition properties */
    --yh-transition-theme: background-color 0.35s ease, color 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease, opacity 0.35s ease;
}

/* ----- Skip Link ----- */
.yh-skip-link {
    position: absolute; top: -100%; left: 0; z-index: 10000;
    padding: 0.625rem 1.25rem;
    background: var(--yh-primary); color: var(--yh-background);
    font-weight: 600; font-size: 0.9rem; text-decoration: none;
    border-radius: 0 0 0.5rem 0; outline-offset: 2px;
    transition: top 0.15s ease;
}
.yh-skip-link:focus { top: 0; }

/* ----- Container ----- */
.yh-container {
    width: 100%; max-width: 80rem; margin: 0 auto; padding: 0 1.5rem;
}
@media (max-width: 640px) {
    .yh-container { padding: 0 1rem; }
}

/* ----- Typography ----- */
body {
    margin: 0; padding: 0;
    font-family: var(--yh-font-sans);
    background: var(--yh-background);
    color: var(--yh-foreground);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: var(--yh-transition-theme);
}

.yh-theme {
    transition: var(--yh-transition-theme);
}

.yh-font-mono { font-family: var(--yh-font-mono); }
.yh-font-display { font-family: var(--yh-font-display); }

.yh-text-cyan { color: var(--yh-primary); }
.yh-text-muted { color: var(--yh-muted-foreground); }

/* Theme transition for all themed elements */
.yh-nav,
.yh-nav.scrolled,
.yh-card,
.yh-card-strong,
.yh-why-card,
.yh-glass,
.yh-glass-strong,
.yh-mobile-menu,
.yh-dropdown-menu,
.yh-path-sticky,
.yh-mobile-convert,
.yh-btt,
.yh-footer,
.yh-section,
.yh-hero,
.yh-btn,
.yh-btn-ghost,
.yh-btn-primary,
.yh-lang-btn,
.yh-theme-btn,
.yh-burger,
.yh-search-input,
.yh-stat-card,
.yh-lj-tab,
.yh-lj-stats,
.yh-lj-dashboard,
.yh-lj-dash-module,
.yh-lj-milestone-content,
.yh-lj-cal-prev,
.yh-lj-cal-next,
.yh-lj-radio,
.yh-course-card,
.yh-path-option,
.yh-faq-item,
.yh-blog-card {
    transition: var(--yh-transition-theme);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.yh-nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 999;
    padding: 0.65rem 0;
    background: rgba(var(--yh-background-rgb), 0.88);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--yh-border);
    transition: var(--yh-transition-theme);
}
.yh-nav.scrolled {
    background: rgba(var(--yh-surface-rgb), 0.95);
    box-shadow: 0 4px 30px rgba(var(--yh-foreground-rgb), 0.08);
}
.yh-nav-shell {
    display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.yh-nav-logo { display: flex; align-items: center; flex-shrink: 0; text-decoration: none; }
.yh-nav-logo img { display: block; }
.yh-nav-links {
    display: flex; align-items: center; gap: 0rem;
}
.yh-nav-link {
    padding: 0.45rem 0.9rem;
    font-size: 0.875rem; font-weight: 500;
    color: var(--yh-foreground); text-decoration: none;
    border-radius: var(--yh-radius-md);
    transition: all 0.25s var(--yh-ease-out);
    white-space: nowrap;
    opacity: 0.75;
    position: relative;
}
.yh-nav-link::after {
    content: ""; position: absolute; bottom: 2px; left: 0.9rem; right: 0.9rem;
    height: 1.5px; border-radius: 1px;
    background: var(--yh-primary);
    transform: scaleX(0); transition: transform 0.3s var(--yh-ease-out);
}
.yh-nav-link:hover { opacity: 1; background: var(--yh-primary-005); color: var(--yh-primary); }
.yh-nav-link:hover::after { transform: scaleX(0.4); }
.yh-nav-link.active { opacity: 1; color: var(--yh-primary); }
.yh-nav-link.active::after { transform: scaleX(1); }

/* Nav Actions */
.yh-nav-actions {
    display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0;
}

/* Language Switcher */
.yh-lang-btn {
    display: inline-flex; align-items: center; gap: 0.3rem;
    padding: 0.4rem 0.7rem;
    border: 1px solid var(--yh-border); border-radius: var(--yh-radius-md);
    background: transparent;
    font-size: 0.78rem; font-weight: 600; cursor: pointer;
    color: var(--yh-foreground); transition: all 0.25s var(--yh-ease-out);
}
.yh-lang-btn:hover { border-color: var(--yh-primary); color: var(--yh-primary); background: var(--yh-primary-005); }

/* Theme Toggle */
.yh-theme-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 36px; height: 36px;
    border: 1px solid var(--yh-border); border-radius: var(--yh-radius-md);
    background: transparent; cursor: pointer; color: var(--yh-foreground);
    transition: all 0.25s var(--yh-ease-out);
}
.yh-theme-btn:hover { border-color: var(--yh-primary); color: var(--yh-primary); background: var(--yh-primary-005); }
.yh-sun-icon, .yh-moon-icon { width: 17px; height: 17px; transition: transform 0.3s var(--yh-ease-spring); }
.yh-theme-btn:hover .yh-sun-icon,
.yh-theme-btn:hover .yh-moon-icon { transform: rotate(15deg) scale(1.1); }
[data-theme="light"] .yh-moon-icon { display: none; }
[data-theme="dark"] .yh-sun-icon { display: none; }

/* Burger Menu */
.yh-burger {
    display: none; align-items: center; justify-content: center;
    width: 36px; height: 36px;
    border: 1px solid var(--yh-border); border-radius: var(--yh-radius-md);
    background: transparent; cursor: pointer; color: var(--yh-foreground);
    transition: all 0.25s var(--yh-ease-out);
}
.yh-burger:hover { border-color: var(--yh-primary); color: var(--yh-primary); background: var(--yh-primary-005); }
.yh-burger svg { transition: transform 0.3s var(--yh-ease-spring); }
.yh-burger:hover svg { transform: scale(1.1); }

/* ============================================================
   DROPDOWN MENU
   ============================================================ */
.yh-nav-dropdown { position: relative; display: flex; align-items: center; }
.yh-dropdown-menu {
    position: absolute; top: 100%; left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 240px;
    background: rgba(var(--yh-surface-rgb), 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--yh-border);
    border-radius: var(--yh-radius-lg);
    padding: 0.4rem;
    opacity: 0; visibility: hidden;
    transition: all 0.25s var(--yh-ease-out);
    box-shadow: 0 20px 60px -12px var(--yh-shadow-black);
    z-index: 100; pointer-events: none;
}
.yh-nav-dropdown:hover .yh-dropdown-menu,
.yh-nav-dropdown:focus-within .yh-dropdown-menu {
    opacity: 1; visibility: visible; pointer-events: auto;
    transform: translateX(-50%) translateY(4px);
}
.yh-dropdown-menu a {
    display: block; padding: 0.55rem 1rem;
    font-size: 0.85rem; font-weight: 500;
    color: var(--yh-foreground); text-decoration: none;
    border-radius: var(--yh-radius-sm);
    transition: all 0.2s var(--yh-ease-out);
}
.yh-dropdown-menu a:hover {
    background: var(--yh-primary-005); color: var(--yh-primary);
    padding-left: 1.25rem;
}

/* ============================================================
   MOBILE MENU
   ============================================================ */
.yh-mobile-menu {
    display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    z-index: 998;
    background: rgba(var(--yh-background-rgb), 0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    padding: 5rem 1.5rem 2rem;
    overflow-y: auto;
    opacity: 0; visibility: hidden;
    transition: var(--yh-transition-theme);
}
.yh-mobile-menu.open { opacity: 1; visibility: visible; display: block; }
.yh-mobile-menu a {
    display: block; padding: 0.75rem 0;
    font-size: 1.05rem; font-weight: 500;
    color: var(--yh-foreground); text-decoration: none;
    border-bottom: 1px solid var(--yh-border);
    transition: all 0.25s var(--yh-ease-out);
    border-radius: var(--yh-radius-sm);
}
.yh-mobile-menu a:hover { color: var(--yh-primary); padding-left: 0.5rem; }
.yh-mobile-menu a.active { color: var(--yh-primary); }
.yh-mobile-sub { padding-left: 1rem; margin: 0; display: flex; flex-direction: column; }
.yh-mobile-sub a {
    font-size: 0.88rem !important; padding: 0.5rem 0 !important;
    border-bottom: none !important; opacity: 0.8;
}
.yh-mobile-sub a:hover { opacity: 1; }

/* ============================================================
   BUTTONS
   ============================================================ */
.yh-btn {
    display: inline-flex; align-items: center; gap: 0.45rem;
    padding: 0.7rem 1.5rem;
    font-family: var(--yh-font-sans);
    font-size: 0.88rem; font-weight: 600;
    border-radius: var(--yh-radius-lg);
    border: 1px solid transparent;
    cursor: pointer; text-decoration: none;
    transition: all 0.3s var(--yh-ease-out);
    white-space: nowrap;
    position: relative; overflow: hidden;
    letter-spacing: 0.01em;
}
.yh-btn::after {
    content: ""; position: absolute; inset: 0;
    border-radius: inherit;
    background: radial-gradient(circle at var(--yh-mx, 50%) var(--yh-my, 50%), rgba(255,255,255,0.15) 0%, transparent 60%);
    opacity: 0; transition: opacity 0.3s;
    pointer-events: none;
}
.yh-btn:hover::after { opacity: 1; }

.yh-btn-sm { padding: 0.45rem 1.1rem; font-size: 0.82rem; border-radius: var(--yh-radius-md); }
.yh-btn-lg { padding: 0.85rem 2rem; font-size: 0.95rem; border-radius: var(--yh-radius-xl); }

.yh-btn-primary {
    background: var(--yh-gradient-cyan); color: var(--yh-primary-foreground);
    border-color: transparent;
    background-size: 100% 100%;
}
.yh-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px -8px rgba(var(--yh-primary-rgb), 0.3);
    background-position: right center;
}
.yh-btn-ghost {
    background: transparent; color: var(--yh-foreground);
    border-color: var(--yh-border-strong);
}
.yh-btn-ghost:hover {
    border-color: var(--yh-primary); color: var(--yh-primary);
    background: var(--yh-primary-005);
    transform: translateY(-1px);
}
.yh-btn-ghost::after { display: none; }

.yh-btn-outline {
    background: transparent; color: var(--yh-primary);
    border-color: var(--yh-primary-025);
}
.yh-btn-outline:hover {
    background: var(--yh-primary-005);
    border-color: var(--yh-primary);
    transform: translateY(-1px);
}
.yh-btn-outline::after { display: none; }

.yh-btn-magnetic { position: relative; overflow: hidden; }
.yh-glow { box-shadow: 0 0 30px -5px var(--yh-primary-020); }
.yh-glow-strong { box-shadow: 0 0 40px -5px var(--yh-primary-030); }

.yh-btn-icon {
    width: 2.5rem; height: 2.5rem; padding: 0;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: var(--yh-radius-md);
}
.yh-btn-icon svg { width: 1.1rem; height: 1.1rem; }

/* ============================================================
   SECTION LAYOUT
   ============================================================ */
.yh-section { padding: 5.5rem 0; }
.yh-section-compact { padding: 3.5rem 0; }
.yh-section-no-top { padding-top: 0; }
.yh-section-pb-xl { padding-bottom: 6.5rem; }
.yh-section-alt { background: var(--yh-background-deep); }

.yh-section-head { margin-bottom: 3rem; max-width: 48rem; }
.yh-section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.yh-eyebrow {
    display: inline-block;
    font-family: var(--yh-font-mono);
    font-size: 0.7rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.14em;
    color: var(--yh-primary);
    margin-bottom: 0.75rem;
    position: relative;
}
.yh-eyebrow::after {
    content: ""; display: inline-block;
    width: 2rem; height: 1px;
    background: var(--yh-primary-025);
    margin-left: 0.6rem;
    vertical-align: middle;
}
.yh-eyebrow.center::after { display: none; }

.yh-section-title {
    font-family: var(--yh-font-display);
    font-size: 2.35rem; font-weight: 700;
    color: var(--yh-foreground);
    margin: 0; line-height: 1.2;
    letter-spacing: -0.02em;
}
.yh-section-title-gradient {
    background: var(--yh-gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.yh-section-sub {
    font-size: 0.95rem; color: var(--yh-muted-foreground);
    line-height: 1.65; margin: 0.75rem 0 0;
    max-width: 36rem;
}
.yh-section-head.center .yh-section-sub { margin-left: auto; margin-right: auto; }

@media (max-width: 768px) {
    .yh-section-title { font-size: 1.65rem; }
    .yh-section { padding: 3.5rem 0; }
}

/* ============================================================
   HERO
   ============================================================ */
.yh-hero {
    position: relative;
    padding: 8rem 0 4rem;
    overflow: hidden;
    min-height: 85vh;
    display: flex; align-items: center;
}
.yh-hero-globe {
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 100%; height: 100%;
    z-index: 0; opacity: 0.7;
    pointer-events: none;
    mix-blend-mode: normal;
}
.yh-hero-content-center {
    position: relative; z-index: 1;
    text-align: center;
    max-width: 64rem; margin: 0 auto;
}
.yh-hero-title {
    font-family: var(--yh-font-display);
    font-size: 3.5rem; font-weight: 800;
    line-height: 1.08; letter-spacing: -0.03em;
    color: var(--yh-foreground);
    margin: 1.25rem 0 1rem;
}
.yh-hero-title-gradient {
    background: var(--yh-gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.yh-hero-sub {
    font-size: 1.15rem; color: var(--yh-muted-foreground);
    max-width: 36rem; margin: 0 auto 1.5rem;
    line-height: 1.6;
}
.yh-hero-actions { margin-top: 1.75rem; }
.yh-hero-actions-row {
    display: flex; flex-wrap: wrap; gap: 0.75rem;
    justify-content: center; align-items: center;
}

/* Hero pill accent */
.yh-hero-pill {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.45rem 1.1rem;
    border: 1px solid var(--yh-primary-015);
    border-radius: 100px;
    background: var(--yh-primary-005);
    backdrop-filter: blur(8px);
    font-size: 0.72rem; font-weight: 600; letter-spacing: 0.04em;
    color: var(--yh-primary);
    transition: var(--yh-transition-theme);
}
.yh-hero-pill:hover {
    background: var(--yh-primary-010);
    border-color: var(--yh-primary-025);
}

/* Stats */
.yh-stats {
    display: flex; flex-wrap: wrap; gap: 2.5rem;
    justify-content: center; margin-top: 2.5rem;
}
.yh-stat { text-align: center; position: relative; }
.yh-stat + .yh-stat::before {
    content: ""; position: absolute; left: -1.25rem; top: 50%;
    transform: translateY(-50%);
    width: 1px; height: 2.5rem;
    background: var(--yh-border);
}
@media (max-width: 640px) {
    .yh-stat + .yh-stat::before { display: none; }
}
.yh-stat-k {
    font-family: var(--yh-font-display);
    font-size: 1.85rem; font-weight: 700;
    color: var(--yh-primary);
    line-height: 1;
    margin-bottom: 0.25rem;
}
.yh-stat-v {
    font-size: 0.78rem; color: var(--yh-muted-foreground);
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* Pill */
.yh-pill {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.4rem 1rem;
    border: 1px solid var(--yh-muted-border);
    border-radius: 100px;
    background: var(--yh-surface-glass);
    backdrop-filter: blur(8px);
    font-size: 0.72rem; font-weight: 600; letter-spacing: 0.05em;
    color: var(--yh-muted-foreground);
}
.yh-pill-spacious { padding: 0.5rem 1.25rem; }
.yh-pill-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--yh-success); display: inline-block;
}

/* Partners Marquee */
.yh-hero-partners { margin-top: 2rem; }
.yh-hero-partners-label {
    display: block; font-size: 0.72rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.1em;
    color: var(--yh-muted-foreground); margin-bottom: 0.75rem;
}
.yh-marquee { overflow: hidden; position: relative; width: 100%; }
.yh-marquee-sm .yh-marquee-item {
    font-size: 0.82rem; font-weight: 600; color: var(--yh-muted-foreground);
    padding: 0.3rem 1.2rem; white-space: nowrap;
    opacity: 0.6;
}
@keyframes yh-marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ============================================================
   GRID SYSTEM
   ============================================================ */
.yh-grid {
    display: grid; gap: 1.5rem;
}
.yh-grid-2 { grid-template-columns: repeat(2, 1fr); }
.yh-grid-3 { grid-template-columns: repeat(3, 1fr); }
.yh-grid-6 { grid-template-columns: repeat(6, 1fr); }

@media (max-width: 1023px) {
    .yh-grid-3, .yh-grid-6 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .yh-grid-2, .yh-grid-3, .yh-grid-6 { grid-template-columns: 1fr; }
}

/* ============================================================
   CARDS
   ============================================================ */
.yh-card {
    background: var(--yh-card);
    border: 1px solid var(--yh-border);
    border-radius: var(--yh-radius-xl);
    padding: 1.75rem;
    transition: all 0.35s var(--yh-ease-out);
    position: relative;
}
.yh-card::before {
    content: ""; position: absolute; inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--yh-primary-0025) 0%, transparent 50%);
    opacity: 0; transition: opacity 0.4s;
    pointer-events: none;
}
.yh-card:hover::before { opacity: 1; }

.yh-card-strong {
    background: var(--yh-card);
    border: 1px solid var(--yh-border);
    border-radius: var(--yh-radius-2xl);
    padding: 2.5rem;
    position: relative; overflow: hidden;
}
.yh-card-strong::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--yh-gradient-cyan);
    opacity: 0; transition: opacity 0.4s;
}
.yh-card-strong:hover::before { opacity: 1; }

.yh-card-desc {
    font-size: 0.875rem; color: var(--yh-muted-foreground);
    line-height: 1.65; margin: 0.5rem 0 1.25rem;
}

.yh-hover-lift {
    transition: all 0.35s var(--yh-ease-out);
}
.yh-hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 48px -16px var(--yh-shadow-black);
    border-color: var(--yh-primary-010);
}

.yh-glass {
    background: var(--yh-surface-glass-md);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--yh-muted-border);
}
.yh-glass:hover {
    background: var(--yh-surface-glass-hi);
    border-color: var(--yh-primary-008);
}

.yh-glass-strong {
    background: var(--yh-surface-glass-hi);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--yh-muted-border);
    border-radius: var(--yh-radius-2xl);
    padding: 2.5rem;
    text-align: center;
}

.yh-card-border-accent {
    position: relative;
}
.yh-card-border-accent::after {
    content: ""; position: absolute; top: 0; left: 2rem; right: 2rem;
    height: 2px;
    background: var(--yh-gradient-cyan);
    border-radius: 0 0 2px 2px;
}

/* Icon Box */
.yh-icon-box {
    width: 48px; height: 48px;
    border-radius: var(--yh-radius-lg);
    background: var(--yh-primary-005);
    color: var(--yh-primary);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1rem;
}
.yh-icon-box svg { width: 22px; height: 22px; }

/* Core Cards */
.yh-core-card-head {
    display: flex; align-items: flex-start;
    justify-content: space-between; margin-bottom: 0.75rem;
}
.yh-core-card-index {
    font-size: 0.7rem; color: var(--yh-muted-foreground);
    font-family: var(--yh-font-mono); font-weight: 600;
}
.yh-core-card-title {
    font-family: var(--yh-font-display);
    font-size: 1.2rem; font-weight: 700; margin: 0 0 0.75rem;
    color: var(--yh-card-foreground);
}
.yh-core-card-list { margin: 0; padding: 0; list-style: none; }
.yh-core-card-list li {
    padding: 0.35rem 0; font-size: 0.85rem;
    color: var(--yh-muted-foreground); line-height: 1.5;
    display: flex; align-items: flex-start; gap: 0.4rem;
}
.yh-core-card-list li::before {
    content: "—";
    color: var(--yh-primary);
    flex-shrink: 0;
    font-weight: 300;
}
.yh-core-card-link {
    margin-top: 1rem; display: inline-flex; align-items: center; gap: 0.4rem;
    font-size: 0.85rem; font-weight: 600; color: var(--yh-primary);
    text-decoration: none; transition: all 0.25s var(--yh-ease-out);
}
.yh-core-card-link:hover { gap: 0.6rem; opacity: 0.85; }
.yh-core-card-link svg { transition: transform 0.25s var(--yh-ease-out); }
.yh-core-card-link:hover svg { transform: translateX(3px); }

/* Story Link */
.yh-story-link {
    font-size: 0.85rem; font-weight: 600; color: var(--yh-primary);
    text-decoration: none; transition: all 0.2s;
}
.yh-story-link:hover { gap: 0.5rem; opacity: 0.8; }

/* Why Cards */
.yh-why-card {
    text-align: center; padding: 1.75rem 1.5rem;
    border: 1px solid var(--yh-border);
    border-radius: var(--yh-radius-xl);
    background: var(--yh-card);
    transition: all 0.35s var(--yh-ease-out);
    position: relative; overflow: hidden;
}
.yh-why-card::before {
    content: ""; position: absolute; bottom: 0; left: 0; right: 0;
    height: 2px;
    background: var(--yh-gradient-cyan);
    transform: scaleX(0); transition: transform 0.4s var(--yh-ease-out);
    transform-origin: left;
}
.yh-why-card:hover::before { transform: scaleX(1); }
.yh-why-card:hover {
    border-color: var(--yh-primary-008);
    box-shadow: 0 12px 40px -16px var(--yh-shadow-black);
    transform: translateY(-3px);
}
.yh-why-card svg {
    margin-bottom: 0.75rem;
    transition: transform 0.35s var(--yh-ease-spring);
}
.yh-why-card:hover svg { transform: scale(1.1); }
.yh-why-title { font-family: var(--yh-font-display); font-size: 0.95rem; font-weight: 600; margin: 0; color: var(--yh-card-foreground); }
.yh-why-desc { font-size: 0.82rem; color: var(--yh-muted-foreground); line-height: 1.6; margin: 0.5rem 0 0; }

/* Industry Cards */
.yh-industry-card {
    text-align: center; padding: 1.25rem;
    display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
    transition: all 0.3s var(--yh-ease-out);
    border-radius: var(--yh-radius-lg);
    cursor: default;
}
.yh-industry-card:hover {
    background: var(--yh-primary-0025);
    transform: translateY(-2px);
}
.yh-industry-card svg {
    width: 28px; height: 28px;
    transition: transform 0.3s var(--yh-ease-spring);
}
.yh-industry-card:hover svg { transform: scale(1.15); }
.yh-industry-name { font-size: 0.78rem; font-weight: 600; color: var(--yh-foreground); }
.yh-industry-card:hover .yh-industry-name { color: var(--yh-primary); }

/* Credibility */
.yh-cred-shell { position: relative; }
.yh-cred-grid { align-items: center; }
.yh-cred-title { font-family: var(--yh-font-display); font-size: 1.6rem; font-weight: 700; line-height: 1.3; margin: 0; }
.yh-cred-badges { grid-template-columns: repeat(3, 1fr); gap: 0.75rem; }
.yh-cred-badge { text-align: center; padding: 1rem 0.75rem; }
.yh-cred-label { font-size: 0.6rem; font-weight: 700; letter-spacing: 0.1em; color: var(--yh-muted-foreground); margin-bottom: 0.25rem; }
.yh-cred-name { font-size: 1rem; font-weight: 700; color: var(--yh-foreground); }

/* ============================================================
   DJAC FEATURE
   ============================================================ */
.yh-djac-copy {
    font-size: 1rem; color: var(--yh-muted-foreground); line-height: 1.7;
    margin-bottom: 1.5rem;
}
.yh-djac-bullets { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.yh-djac-bullets li {
    padding: 0.4rem 0; font-size: 0.88rem;
    color: var(--yh-foreground); line-height: 1.5;
}
.yh-djac-bullets li::before { content: "✓ "; color: var(--yh-success); font-weight: 700; }
.yh-djac-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.yh-djac-visual-wrap { display: flex; align-items: center; justify-content: center; }
.yh-djac-screen {
    width: 100%; max-width: 360px;
    background: linear-gradient(145deg, #0a1628, #132240);
    border-radius: var(--yh-radius-2xl);
    padding: 1.5rem;
    border: 1px solid rgba(34, 211, 238, 0.2);
    box-shadow: 0 20px 60px -12px rgba(0,0,0,0.3);
}
.yh-djac-screen-title { font-size: 1.2rem; font-weight: 800; }
.yh-djac-screen-sub { font-size: 0.78rem; color: rgba(255,255,255,0.5); margin-bottom: 1.5rem; }
.yh-djac-screen-live { font-size: 0.65rem; color: var(--yh-success); display: flex; align-items: center; gap: 0.4rem; }
.yh-live-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--yh-success); animation: yhPulse 1.5s ease-in-out infinite; }
@keyframes yhPulse {
    0%, 100% { opacity: 1; } 50% { opacity: 0.3; }
}

/* ============================================================
   FAQ
   ============================================================ */
.yh-faq { max-width: 48rem; margin: 0 auto; }
.yh-faq-narrow { max-width: 40rem; }
.yh-faq-item {
    border-bottom: 1px solid var(--yh-border);
    padding: 0.15rem 0;
    transition: var(--yh-transition-theme);
}
.yh-faq-item summary {
    padding: 1.1rem 0.5rem; font-weight: 600; font-size: 0.95rem;
    cursor: pointer; list-style: none;
    display: flex; align-items: center; justify-content: space-between;
    transition: all 0.25s var(--yh-ease-out);
    border-radius: var(--yh-radius-sm);
    gap: 1rem;
}
.yh-faq-item summary::-webkit-details-marker { display: none; }
.yh-faq-item summary::after {
    content: ""; display: inline-flex; align-items: center; justify-content: center;
    width: 1.5rem; height: 1.5rem; flex-shrink: 0;
    font-size: 1rem; font-weight: 300; line-height: 1;
    color: var(--yh-muted-foreground);
    border-radius: 50%;
    border: 1px solid var(--yh-border);
    transition: all 0.3s var(--yh-ease-out);
    background: var(--yh-surface);
}
.yh-faq-item[open] > summary::after {
    transform: rotate(45deg);
    background: var(--yh-primary-005);
    border-color: var(--yh-primary);
    color: var(--yh-primary);
}
.yh-faq-item summary:hover {
    color: var(--yh-primary);
    padding-left: 0.75rem;
}
.yh-faq-item summary:hover::after {
    border-color: var(--yh-primary-020);
    color: var(--yh-primary);
}
.yh-faq-body {
    padding: 0 0.5rem 1.25rem; font-size: 0.88rem;
    color: var(--yh-muted-foreground); line-height: 1.7;
}

/* ============================================================
   TESTIMONIALS
   ============================================================ */
.yh-testimonial-card {
    background: var(--yh-card);
    border: 1px solid var(--yh-border);
    border-radius: var(--yh-radius-xl);
    padding: 1.75rem;
    transition: all 0.35s var(--yh-ease-out);
}
.yh-testimonial-card:hover {
    border-color: var(--yh-primary-008);
    box-shadow: 0 12px 40px -16px var(--yh-shadow-black);
    transform: translateY(-2px);
}
.yh-testimonial-body {
    font-size: 0.88rem; color: var(--yh-muted-foreground);
    line-height: 1.7; margin-bottom: 1.25rem;
    font-style: italic;
    position: relative;
    padding-left: 1.25rem;
    border-left: 2px solid var(--yh-primary-015);
}
.yh-testimonial-author {
    display: flex; align-items: center; gap: 0.75rem;
}
.yh-testimonial-avatar {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: var(--yh-gradient-cyan);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 700; font-size: 0.85rem;
    font-family: var(--yh-font-display); flex-shrink: 0;
}
.yh-testimonial-author strong {
    display: block; font-size: 0.85rem; color: var(--yh-foreground);
}
.yh-testimonial-author span {
    font-size: 0.75rem; color: var(--yh-muted-foreground);
}

/* ============================================================
   UTILITY CLASSES
   ============================================================ */
/* Spacing */
.yh-mt-1 { margin-top: 0.5rem; }
.yh-mt-2 { margin-top: 1rem; }
.yh-mt-3 { margin-top: 1.5rem; }
.yh-mt-4 { margin-top: 2rem; }
.yh-mt-5 { margin-top: 2.5rem; }
.yh-mt-6 { margin-top: 3rem; }
.yh-mb-1 { margin-bottom: 0.5rem; }
.yh-mb-2 { margin-bottom: 1rem; }
.yh-mb-3 { margin-bottom: 1.5rem; }
.yh-mb-4 { margin-bottom: 2rem; }
.yh-mb-5 { margin-bottom: 2.5rem; }
.yh-mb-6 { margin-bottom: 3rem; }

.yh-p-1 { padding: 0.5rem; }
.yh-p-2 { padding: 1rem; }
.yh-p-3 { padding: 1.5rem; }
.yh-p-4 { padding: 2rem; }

/* Layout */
.yh-text-center { text-align: center; }
.yh-text-left { text-align: left; }
.yh-text-right { text-align: right; }
.yh-inline-flex { display: inline-flex; align-items: center; gap: 0.4rem; }
.yh-flex { display: flex; }
.yh-flex-center { display: flex; align-items: center; justify-content: center; }
.yh-flex-between { display: flex; align-items: center; justify-content: space-between; }
.yh-flex-col { display: flex; flex-direction: column; }
.yh-gap-1 { gap: 0.5rem; }
.yh-gap-2 { gap: 1rem; }
.yh-gap-3 { gap: 1.5rem; }
.yh-gap-4 { gap: 2rem; }
.yh-flex-wrap { flex-wrap: wrap; }
.yh-items-center { align-items: center; }
.yh-justify-center { justify-content: center; }

/* Typography */
.yh-text-sm { font-size: 0.82rem; }
.yh-text-xs { font-size: 0.72rem; }
.yh-text-lg { font-size: 1.05rem; }
.yh-text-xl { font-size: 1.2rem; }
.yh-text-2xl { font-size: 1.5rem; }
.yh-font-bold { font-weight: 700; }
.yh-font-semibold { font-weight: 600; }
.yh-font-medium { font-weight: 500; }
.yh-leading-tight { line-height: 1.2; }
.yh-leading-relaxed { line-height: 1.7; }

/* Colors */
.yh-text-primary { color: var(--yh-primary); }
.yh-text-foreground { color: var(--yh-foreground); }
.yh-text-muted { color: var(--yh-muted-foreground); }
.yh-text-success { color: var(--yh-success); }
.yh-text-destructive { color: var(--yh-destructive); }

/* Text effects */
.yh-gradient-text {
    background: var(--yh-gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.yh-strikethrough { opacity: 0.6; font-weight: 400; text-decoration: line-through; }
.yh-op-65 { opacity: 0.65; }
.yh-op-50 { opacity: 0.5; }
.yh-op-80 { opacity: 0.8; }

/* Borders */
.yh-border { border: 1px solid var(--yh-border); }
.yh-border-primary { border-color: var(--yh-primary-020) !important; }
.yh-border-cyan { border-color: rgba(34, 211, 238, 0.3) !important; }
.yh-rounded-sm { border-radius: var(--yh-radius-sm); }
.yh-rounded-md { border-radius: var(--yh-radius-md); }
.yh-rounded-lg { border-radius: var(--yh-radius-lg); }
.yh-rounded-xl { border-radius: var(--yh-radius-xl); }
.yh-rounded-full { border-radius: 9999px; }

/* Width */
.yh-w-full { width: 100%; }
.yh-max-w-sm { max-width: 24rem; }
.yh-max-w-md { max-width: 32rem; }
.yh-max-w-lg { max-width: 48rem; }
.yh-max-w-xl { max-width: 64rem; }

/* Misc */
.yh-ml-1 { margin-left: 0.35rem; }
.yh-mr-1 { margin-right: 0.5rem; }
.yh-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.yh-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* Divider */
.yh-divider {
    width: 100%; height: 1px;
    background: var(--yh-border);
    margin: 1.5rem 0;
}
.yh-divider-gradient {
    width: 100%; height: 1px;
    background: linear-gradient(90deg, transparent, var(--yh-primary-015), transparent);
    margin: 2rem 0;
}

/* Skeleton loading */
.yh-skeleton {
    background: linear-gradient(90deg, var(--yh-muted) 25%, var(--yh-surface-elevated) 50%, var(--yh-muted) 75%);
    background-size: 200% 100%;
    animation: yh-shimmer 1.5s ease-in-out infinite;
    border-radius: var(--yh-radius-sm);
}
@keyframes yh-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ============================================================
   CTA BOX
   ============================================================ */
.yh-cta-box {
    background: var(--yh-card);
    border: 1px solid var(--yh-border);
    border-radius: var(--yh-radius-2xl);
    padding: 3rem;
    text-align: center;
    position: relative; overflow: hidden;
    transition: var(--yh-transition-theme);
}
.yh-cta-box::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--yh-gradient-cyan);
}
.yh-cta-title {
    font-family: var(--yh-font-display);
    font-size: 2rem; font-weight: 700;
    margin: 0.75rem 0; line-height: 1.2;
    color: var(--yh-foreground);
}
.yh-cta-title-gradient {
    background: var(--yh-gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.yh-cta-lead {
    font-size: 1rem; color: var(--yh-muted-foreground);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}
.yh-cta-actions { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }

/* ============================================================
   FOOTER
   ============================================================ */
.yh-footer {
    background: #0A0F1A;
    color: rgba(241, 245, 249, 0.7);
    padding: 4rem 0 2rem;
}
.yh-footer-inner { max-width: 80rem; margin: 0 auto; padding: 0 1.5rem; }
.yh-footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 2rem; margin-bottom: 2.5rem;
}
@media (max-width: 1023px) {
    .yh-footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
    .yh-footer-grid { grid-template-columns: 1fr; }
}

.yh-footer h4 {
    color: #fff; font-size: 0.82rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.08em;
    margin: 0 0 1rem;
}
.yh-footer ul { list-style: none; padding: 0; margin: 0; }
.yh-footer ul li { margin-bottom: 0.4rem; }
.yh-footer ul li a {
    color: rgba(255,255,255,0.55); text-decoration: none;
    font-size: 0.82rem; transition: all 0.2s;
}
.yh-footer ul li a:hover { color: #fff; padding-left: 4px; }
.yh-footer-blurb {
    font-size: 0.82rem; color: rgba(255,255,255,0.45);
    line-height: 1.6; margin: 0.75rem 0;
}
.yh-footer-socials { display: flex; gap: 0.75rem; margin-top: 1rem; }
.yh-footer-socials a {
    width: 34px; height: 34px;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--yh-radius-md);
    display: flex; align-items: center; justify-content: center;
    color: rgba(255,255,255,0.5); text-decoration: none;
    transition: all 0.2s;
}
.yh-footer-socials a:hover { border-color: var(--yh-primary); color: var(--yh-primary); }
.yh-footer-hq-copy { font-size: 0.82rem; line-height: 1.7; }
.yh-footer-email { color: var(--yh-primary); text-decoration: none; }
.yh-footer-phone { color: rgba(255,255,255,0.5); }
.yh-footer-bottom {
    padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,0.08);
    display: flex; justify-content: space-between;
    font-size: 0.75rem; color: rgba(255,255,255,0.35);
    flex-wrap: wrap; gap: 0.5rem;
}

/* ============================================================
   SERVICE PAGE COMPONENTS
   ============================================================ */
.yh-hero-compact-sm { padding: 7rem 0 3rem; min-height: auto; }
.yh-hero-bg {
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(var(--yh-primary-rgb), 0.05) 0%, transparent 100%);
    pointer-events: none;
}
.yh-hero-bg-accent {
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at 30% 40%, rgba(var(--yh-primary-rgb), 0.1) 0%, transparent 60%);
    pointer-events: none;
}
.yh-hero-grid {
    position: absolute; inset: 0;
    background-image: linear-gradient(var(--yh-grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--yh-grid-line) 1px, transparent 1px);
    background-size: 3rem 3rem;
    pointer-events: none; opacity: 0.5;
}
.yh-hero-vignette {
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at center, transparent 40%, rgba(var(--yh-background-rgb), 1) 80%);
    pointer-events: none;
}
.yh-hero-content-left { text-align: left; }

/* Hero lead paragraph (used across all service pages) */
.yh-hero-lead {
    font-size: 1.05rem; line-height: 1.65;
    color: var(--yh-muted-foreground);
    max-width: 36rem; margin: 0 0 1.5rem;
}
.yh-hero-lead-left { text-align: left; }

/* Tag chips for hero navigation */
.yh-tag-chip {
    display: inline-flex; align-items: center;
    padding: 0.4rem 1rem;
    border: 1px solid var(--yh-muted-border);
    border-radius: 100px;
    background: var(--yh-surface-glass);
    backdrop-filter: blur(8px);
    font-size: 0.75rem; font-weight: 600; letter-spacing: 0.03em;
    color: var(--yh-muted-foreground);
    text-decoration: none;
    transition: all 0.25s var(--yh-ease-out);
}
.yh-tag-chip:hover {
    border-color: var(--yh-primary);
    color: var(--yh-primary);
    background: var(--yh-primary-005);
}
[data-theme="dark"] .yh-tag-chip { background: rgba(var(--yh-surface-rgb), 0.3); }

/* Solutions page hero pill */
.yh-solutions-hero-pill { margin-bottom: 1.25rem; }

/* Card grid for service listing pages */
.yh-service-card {
    padding: 1.5rem;
}
.yh-service-card h3 {
    font-family: var(--yh-font-display);
    font-size: 1.05rem; font-weight: 600;
    color: var(--yh-card-foreground);
    margin: 0 0 0.5rem;
    line-height: 1.3;
}
.yh-service-card p {
    font-size: 0.875rem;
    color: var(--yh-muted-foreground);
    line-height: 1.6;
    margin: 0;
}
.yh-service-link-inline {
    color: var(--yh-primary);
    text-decoration: none;
    font-weight: 600;
    transition: opacity 0.2s;
}
.yh-service-link-inline:hover { opacity: 0.8; }
.yh-service-copy-link {
    color: var(--yh-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
    font-weight: 500;
}
.yh-service-copy-link:hover { opacity: 0.8; }
[data-theme="dark"] .yh-service-card h3 { color: var(--yh-card-foreground); }
[data-theme="dark"] .yh-service-card p { color: var(--yh-muted-foreground); }

/* Solutions page section layout */
.yh-solutions-section-first { padding-top: 3rem; }
.yh-solutions-section-anchor { scroll-margin-top: 5rem; }

.yh-contact-hero { padding: 7rem 0 3rem; min-height: auto; }

/* VAPT page specific overrides */
.yh-vapt-hero-lead { max-width: 40rem; }

.yh-stats-grid {
    display: grid; gap: 1rem; margin: 2rem 0;
}
.yh-stats-grid-4 { grid-template-columns: repeat(4, 1fr); }
.yh-stat-card {
    text-align: center; padding: 1.25rem 0.75rem;
    border: 1px solid var(--yh-border);
    border-radius: var(--yh-radius-lg);
    background: var(--yh-surface-glass);
    backdrop-filter: blur(8px);
    transition: all 0.35s var(--yh-ease-out);
    position: relative; overflow: hidden;
}
.yh-stat-card::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--yh-gradient-cyan);
    opacity: 0; transition: opacity 0.35s;
}
.yh-stat-card:hover::before { opacity: 1; }
.yh-stat-card:hover {
    border-color: var(--yh-primary-010);
    transform: translateY(-3px);
    box-shadow: 0 12px 32px -16px var(--yh-shadow-black);
}
.yh-stat-value {
    display: block; font-family: var(--yh-font-display);
    font-size: 1.5rem; font-weight: 700;
    color: var(--yh-primary); margin-bottom: 0.25rem;
}
.yh-stat-label {
    display: block; font-size: 0.78rem;
    color: var(--yh-muted-foreground); font-weight: 500;
}

@media (max-width: 768px) {
    .yh-stats-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
    .yh-stats-grid-4 { grid-template-columns: 1fr; }
}

/* ============================================================
   ANIMATIONS & REVEAL
   ============================================================ */
.yh-reveal { opacity: 0; transform: translateY(28px); transition: all 0.7s var(--yh-ease-out); }
.yh-reveal.is-visible { opacity: 1; transform: translateY(0); }

.yh-reveal-strong { opacity: 0; transform: translateY(44px); transition: all 0.9s var(--yh-ease-out); }
.yh-reveal-strong.is-visible { opacity: 1; transform: translateY(0); }

.yh-reveal-left { opacity: 0; transform: translateX(-32px); transition: all 0.7s var(--yh-ease-out); }
.yh-reveal-left.is-visible { opacity: 1; transform: translateX(0); }

.yh-reveal-right { opacity: 0; transform: translateX(32px); transition: all 0.7s var(--yh-ease-out); }
.yh-reveal-right.is-visible { opacity: 1; transform: translateX(0); }

.yh-reveal-scale { opacity: 0; transform: scale(0.95); transition: all 0.7s var(--yh-ease-out); }
.yh-reveal-scale.is-visible { opacity: 1; transform: scale(1); }

.yh-grid-reveal > * { opacity: 0; transform: translateY(24px); transition: all 0.6s var(--yh-ease-out); }
.yh-grid-reveal > *.is-visible { opacity: 1; transform: translateY(0); }

/* Stagger children reveal */
.yh-stagger > * { opacity: 0; transform: translateY(20px); transition: all 0.5s var(--yh-ease-out); }
.yh-stagger > *.is-visible { opacity: 1; transform: translateY(0); }
.yh-stagger > *:nth-child(1) { transition-delay: 0ms; }
.yh-stagger > *:nth-child(2) { transition-delay: 80ms; }
.yh-stagger > *:nth-child(3) { transition-delay: 160ms; }
.yh-stagger > *:nth-child(4) { transition-delay: 240ms; }
.yh-stagger > *:nth-child(5) { transition-delay: 320ms; }
.yh-stagger > *:nth-child(6) { transition-delay: 400ms; }

/* Pulse animation for live indicators */
@keyframes yh-pulse-soft {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}
.yh-pulse { animation: yh-pulse-soft 2s ease-in-out infinite; }

/* Fade in */
@keyframes yh-fade-in {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}
.yh-fade-in { animation: yh-fade-in 0.5s var(--yh-ease-out) both; }

/* ============================================================
   STICKY PATH ESTIMATOR
   ============================================================ */
.yh-path-sticky {
    position: fixed; bottom: 1.5rem; right: 1.5rem;
    width: 340px; max-width: calc(100vw - 2rem);
    z-index: 900;
    background: rgba(var(--yh-surface-rgb), 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--yh-border);
    border-radius: var(--yh-radius-2xl);
    padding: 1.25rem;
    box-shadow: 0 20px 60px -12px rgba(var(--yh-foreground-rgb), 0.18);
}
.yh-path-close {
    position: absolute; top: 0.75rem; right: 0.75rem;
    width: 28px; height: 28px;
    border: 1px solid var(--yh-border); border-radius: 50%;
    background: transparent; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    color: var(--yh-muted-foreground); transition: all 0.2s;
}
.yh-path-close:hover { border-color: var(--yh-destructive); color: var(--yh-destructive); }
.yh-path-kicker { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--yh-muted-foreground); display: block; margin-bottom: 0.5rem; }
.yh-path-options { display: flex; gap: 0.35rem; margin-bottom: 0.75rem; flex-wrap: wrap; }
.yh-path-option {
    padding: 0.3rem 0.65rem; font-size: 0.72rem; font-weight: 600;
    border: 1px solid var(--yh-border); border-radius: 100px;
    background: transparent; cursor: pointer; color: var(--yh-muted-foreground);
    transition: all 0.2s;
}
.yh-path-option.is-active { background: var(--yh-primary); color: #fff; border-color: var(--yh-primary); }
.yh-path-estimator { margin-bottom: 0.75rem; }
.yh-path-estimator-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; margin-bottom: 0.5rem; }
.yh-path-estimator-field span { display: block; font-size: 0.65rem; font-weight: 600; color: var(--yh-muted-foreground); margin-bottom: 0.15rem; }
.yh-path-estimator-field select {
    width: 100%; padding: 0.35rem 0.5rem;
    border: 1px solid var(--yh-border); border-radius: var(--yh-radius-sm);
    font-size: 0.72rem; background: var(--yh-surface); color: var(--yh-foreground);
}
.yh-path-estimator-outcome { font-size: 0.72rem; color: var(--yh-muted-foreground); margin: 0.5rem 0 0; }
.yh-path-sticky .yh-btn { width: 100%; justify-content: center; }

/* ============================================================
   MOBILE CONVERT BAR
   ============================================================ */
.yh-mobile-convert {
    display: none;
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 800;
    background: rgba(var(--yh-surface-rgb), 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid var(--yh-border);
    padding: 0.6rem 1rem;
    gap: 0.5rem; justify-content: center;
}
.yh-mobile-convert .yh-btn { font-size: 0.78rem; padding: 0.4rem 0.75rem; }

/* ============================================================
   BACK TO TOP
   ============================================================ */
.yh-btt {
    position: fixed; bottom: 5rem; right: 1.5rem; z-index: 800;
    width: 40px; height: 40px;
    border: 1px solid var(--yh-border); border-radius: 50%;
    background: rgba(var(--yh-surface-rgb), 0.88);
    backdrop-filter: blur(12px);
    cursor: pointer; display: flex;
    align-items: center; justify-content: center;
    color: var(--yh-foreground);
    transition: all 0.2s;
    box-shadow: 0 4px 16px rgba(var(--yh-foreground-rgb), 0.08);
}
.yh-btt:hover { border-color: var(--yh-primary); color: var(--yh-primary); transform: translateY(-2px); }

/* ============================================================
   CYBER BG
   ============================================================ */
.yh-cyber-bg {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    z-index: 0; pointer-events: none; overflow: hidden;
}
.yh-cyber-bg__canvas { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
.yh-cyber-bg__vignette {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(ellipse at center, transparent 50%, rgba(var(--yh-background-rgb), 1) 85%);
}
.yh-cyber-bg__scanline {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,133,255,0.015) 2px, rgba(0,133,255,0.015) 4px);
    pointer-events: none;
}
.yh-cyber-bg__particles { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
.yh-cyber-bg__particle {
    position: absolute; border-radius: 50%;
    background: var(--yh-primary-015);
    animation: yhDrift var(--dur, 20s) linear infinite;
    animation-delay: var(--delay, 0s);
}
@keyframes yhDrift {
    0% { transform: translateY(100vh) translateX(0); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-10vh) translateX(var(--drift, 0px)); opacity: 0; }
}

/* ============================================================
   LIVE BRIEF / CYBER PULSE
   ============================================================ */
.yh-live-bars { display: flex; align-items: flex-end; gap: 2px; height: 48px; }
.yh-live-bar {
    flex: 1; border-radius: 1px 1px 0 0;
    background: var(--yh-gradient-cyan);
    opacity: 0.5; transition: height 1.2s ease, opacity 1.2s ease;
}

/* ============================================================
   INTENT RAIL (Critical)
   ============================================================ */
.yh-intent-rail-wrap {
    padding-top: 6.4rem; padding-bottom: 0;
    position: relative; z-index: 2;
    background: var(--yh-background-deep);
    transition: var(--yh-transition-theme);
}
[data-theme="dark"] .yh-intent-rail-wrap { background: var(--yh-background-deep); }
.yh-intent-rail { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.55rem; }
.yh-intent-chip {
    display: inline-flex; align-items: center; justify-content: center;
    min-height: 2.2rem; padding: 0.35rem 0.9rem;
    border-radius: 999px;
    border: 1px solid var(--yh-muted-border);
    background: var(--yh-primary-0025);
    backdrop-filter: blur(8px);
    color: var(--yh-foreground);
    font-size: 0.79rem; font-weight: 600;
    letter-spacing: 0.02em; line-height: 1.25;
    text-align: center;
    transition: var(--yh-transition-theme);
}
.yh-intent-chip.yh-intent-chip-primary {
    border-color: var(--yh-primary-030);
    color: var(--yh-primary); background: var(--yh-primary-010);
}
.yh-proof-strip { margin-top: 0.6rem; display: flex; flex-wrap: wrap; gap: 0.45rem 0.6rem; justify-content: center; }

/* ============================================================
   DARK MODE
   ============================================================ */
[data-theme="dark"] {
    --yh-background: #0A0F1A;
    --yh-background-deep: #060A12;
    --yh-foreground: #F1F5F9;
    --yh-surface: #162240;
    --yh-surface-elevated: #1E2F51;
    --yh-card: #162240;
    --yh-card-foreground: #F1F5F9;
    --yh-secondary: #1E2F51;
    --yh-secondary-foreground: #E2E8F0;
    --yh-input: #162240;
    --yh-border: rgba(255, 255, 255, 0.07);
    --yh-border-strong: rgba(255, 255, 255, 0.13);
    --yh-muted: #1A2D4A;
    --yh-muted-foreground: #94A3B8;
    --yh-shadow-black: rgba(0, 0, 0, 0.35);

    --yh-primary: #3B82F6;
    --yh-primary-foreground: #FFFFFF;
    --yh-primary-glow: #60A5FA;
    --yh-accent: #3B82F6;
    --yh-success: #34D399;
    --yh-destructive: #F87171;

    --yh-primary-010: rgba(59, 130, 246, 0.1);
    --yh-primary-015: rgba(59, 130, 246, 0.15);
    --yh-primary-020: rgba(59, 130, 246, 0.2);
    --yh-primary-025: rgba(59, 130, 246, 0.25);
    --yh-primary-030: rgba(59, 130, 246, 0.3);
    --yh-primary-005: rgba(59, 130, 246, 0.05);
    --yh-primary-0025: rgba(59, 130, 246, 0.025);
    --yh-primary-006: rgba(59, 130, 246, 0.06);
    --yh-primary-008: rgba(59, 130, 246, 0.08);
    --yh-primary-050: rgba(59, 130, 246, 0.5);
    --yh-primary-070: rgba(59, 130, 246, 0.7);
    --yh-primary-080: rgba(59, 130, 246, 0.8);
    --yh-primary-090: rgba(59, 130, 246, 0.9);
    --yh-primary-028: rgba(59, 130, 246, 0.28);
    --yh-primary-007: rgba(59, 130, 246, 0.07);
    --yh-primary-004: rgba(59, 130, 246, 0.04);
    --yh-primary-003: rgba(59, 130, 246, 0.03);
    --yh-primary-002: rgba(59, 130, 246, 0.02);
    --yh-primary-001: rgba(59, 130, 246, 0.01);

    --yh-gradient-cyan: linear-gradient(135deg, #3B82F6, #60A5FA);
    --yh-gradient-text: linear-gradient(135deg, #F1F5F9 0%, #60A5FA 100%);
    --yh-shadow-glow: 0 0 40px -10px rgba(59, 130, 246, 0.3);
    --yh-shadow-glow-strong: 0 0 80px -20px rgba(59, 130, 246, 0.45);
    --yh-shadow-elevated: 0 20px 60px -20px rgba(0, 0, 0, 0.35);
    --yh-grid-line: rgba(59, 130, 246, 0.08);
    --yh-muted-border: rgba(108, 128, 148, 0.2);
    --yh-muted-border-lo: rgba(108, 128, 148, 0.1);
    --yh-muted-border-hi: rgba(108, 128, 148, 0.25);
    --yh-text-muted: #94A3B8;
    --yh-text-muted-dark: #CBD5E1;
    --yh-glow-primary: rgba(59, 130, 246, 0.35);
    --yh-glow-secondary: rgba(59, 130, 246, 0.15);

    --yh-background-rgb: 10, 15, 26;
    --yh-foreground-rgb: 241, 245, 249;
    --yh-surface-rgb: 22, 34, 64;
    --yh-card-rgb: 22, 34, 64;
    --yh-primary-rgb: 59, 130, 246;

    --yh-surface-glass: rgba(var(--yh-surface-rgb), 0.55);
    --yh-surface-glass-md: rgba(var(--yh-surface-rgb), 0.75);
    --yh-surface-glass-hi: rgba(var(--yh-surface-rgb), 0.88);
    --yh-surface-glass-lo: rgba(var(--yh-surface-rgb), 0.35);
    --yh-ring: #3B82F6;
}

[data-theme="dark"] .yh-nav {
    background: rgba(var(--yh-background-rgb), 0.9);
    border-bottom-color: var(--yh-border);
}
[data-theme="dark"] .yh-nav.scrolled {
    background: rgba(var(--yh-surface-rgb), 0.97);
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}
[data-theme="dark"] .yh-nav-link { color: var(--yh-foreground); }
[data-theme="dark"] .yh-mobile-menu { background: rgba(var(--yh-background-rgb), 0.98); }
[data-theme="dark"] .yh-dropdown-menu { background: rgba(var(--yh-surface-rgb), 0.97); }
[data-theme="dark"] .yh-footer { background: #060A12; }
[data-theme="dark"] .yh-path-sticky { background: rgba(var(--yh-surface-rgb), 0.95); }
[data-theme="dark"] .yh-mobile-convert { background: rgba(var(--yh-background-rgb), 0.95); }
[data-theme="dark"] .yh-btt { background: rgba(var(--yh-surface-rgb), 0.9); border-color: rgba(255,255,255,0.1); }
[data-theme="dark"] .yh-djac-screen { background: linear-gradient(145deg, #060e1a, #0d1a30); }
.yh-newsletter-form { display: flex; gap: 0.5rem; margin-top: 0.75rem; }
.yh-newsletter-form input {
    flex: 1; padding: 0.5rem 0.75rem;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--yh-radius-md);
    background: rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.8);
    font-family: var(--yh-font-sans);
    font-size: 0.82rem;
    outline: none;
    transition: border-color 0.2s;
}
.yh-newsletter-form input:focus { border-color: var(--yh-primary); }
.yh-newsletter-form input::placeholder { color: rgba(255,255,255,0.35); }
[data-theme="dark"] .yh-newsletter-form input { background: rgba(var(--yh-surface-rgb), 0.5); border-color: var(--yh-border); color: var(--yh-foreground); }
[data-theme="dark"] .yh-newsletter-form input::placeholder { color: var(--yh-text-muted); }
[data-theme="dark"] .yh-card { background: var(--yh-card); }
[data-theme="dark"] .yh-card-strong { background: var(--yh-card); }
[data-theme="dark"] .yh-why-card { background: var(--yh-card); }
[data-theme="dark"] .yh-testimonial-card { background: var(--yh-card); }
[data-theme="dark"] .yh-stat-card { background: var(--yh-surface-glass); }
[data-theme="dark"] .yh-glass { background: var(--yh-surface-glass-md); }
[data-theme="dark"] .yh-glass-strong { background: var(--yh-surface-glass-hi); }
[data-theme="dark"] .yh-lj-tab { background: var(--yh-surface); color: var(--yh-muted-foreground); border-color: var(--yh-border); }
[data-theme="dark"] .yh-lj-tab-active { background: var(--yh-primary); color: var(--yh-primary-foreground); border-color: var(--yh-primary); }
[data-theme="dark"] .yh-faq-item summary::after { background: var(--yh-surface); border-color: var(--yh-border); }
[data-theme="dark"] .yh-faq-item[open] > summary::after { background: var(--yh-primary-005); border-color: var(--yh-primary); color: var(--yh-primary); }
[data-theme="dark"] .yh-search-input { background: var(--yh-surface); border-color: var(--yh-border); color: var(--yh-foreground); }
[data-theme="dark"] .yh-path-estimator-field select { background: var(--yh-surface); border-color: var(--yh-border); color: var(--yh-foreground); }
[data-theme="dark"] .yh-pill { background: rgba(var(--yh-surface-rgb), 0.5); }
[data-theme="dark"] .yh-hero-pill { background: var(--yh-primary-005); border-color: var(--yh-primary-015); }
[data-theme="dark"] .yh-intent-chip { background: var(--yh-primary-0025); border-color: var(--yh-muted-border); }
[data-theme="dark"] .yh-intent-chip.yh-intent-chip-primary { border-color: var(--yh-primary-030); color: var(--yh-primary); background: var(--yh-primary-010); }
[data-theme="dark"] .yh-cred-badge .yh-card { background: var(--yh-surface); border-color: var(--yh-border); }
[data-theme="dark"] .yh-cta-box { background: var(--yh-card); border-color: var(--yh-border); }
[data-theme="dark"] .yh-cta-title-gradient { background: var(--yh-gradient-text); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
[data-theme="dark"] .yh-hero-vignette { background: radial-gradient(ellipse at center, transparent 40%, rgba(var(--yh-background-rgb), 1) 80%); }
[data-theme="dark"] .yh-hero-bg-accent { background: radial-gradient(ellipse at 30% 40%, var(--yh-primary-010) 0%, transparent 60%); }
[data-theme="dark"] .yh-cyber-bg__vignette { background: radial-gradient(ellipse at center, transparent 50%, rgba(var(--yh-background-rgb), 1) 85%); }
[data-theme="dark"] .yh-course-badge { background: var(--yh-primary-010); color: var(--yh-primary); }
[data-theme="dark"] .yh-lj-dash-module { background: var(--yh-surface); }
[data-theme="dark"] .yh-lj-dash-event { background: var(--yh-surface); }
[data-theme="dark"] .yh-lj-cal-prev, [data-theme="dark"] .yh-lj-cal-next { background: var(--yh-surface); border-color: var(--yh-border); color: var(--yh-card-foreground); }
[data-theme="dark"] .yh-lj-radio { border-color: var(--yh-border); }
[data-theme="dark"] .yh-lj-radio-mark { border-color: var(--yh-border-strong); }
[data-theme="dark"] .yh-course-card { background: var(--yh-card); border-color: var(--yh-border); }
[data-theme="dark"] .yh-hero-globe { opacity: 0.4; }

/* ============================================================
   RESPONSIVE - MOBILE (max-width: 1023px)
   ============================================================ */
@media (max-width: 1023px) {
    .yh-nav-dropdown .yh-dropdown-menu { display: none; }
    .yh-nav-links { display: none; }
    .yh-nav-actions { display: flex; align-items: center; gap: 0.5rem; }
    .yh-burger { display: flex !important; }
    .yh-hero { padding: 6rem 0 3rem; min-height: auto; }
    .yh-hero-title { font-size: 2.5rem; }
    .yh-hero-sub { font-size: 0.95rem; max-width: 28rem; }
    .yh-stats { gap: 1.25rem; }
    .yh-section { padding: 3.5rem 0; }
    .yh-cta-box { padding: 2rem; }
    .yh-stagger > *:nth-child(n) { transition-delay: 0ms; }
}

@media (min-width: 1024px) {
    .yh-burger { display: none !important; }
    .yh-mobile-menu { display: none !important; }
}
@media (max-width: 640px) {
    .yh-hero-title { font-size: 1.85rem; }
    .yh-hero-sub { font-size: 0.88rem; }
    .yh-hero { padding: 5rem 0 2.5rem; }
    .yh-stats { gap: 1rem; }
    .yh-stat-k { font-size: 1.5rem; }
    .yh-cred-badges { grid-template-columns: repeat(2, 1fr); }
    .yh-path-sticky { right: 0.5rem; bottom: 4.5rem; width: calc(100% - 1rem); }
    .yh-mobile-convert { display: flex; }
    .yh-btt { bottom: 5rem; }
    .yh-cta-box { padding: 1.5rem; }
    .yh-stat + .yh-stat::before { display: none; }
}

/* ============================================================
   LEARNING JOURNEY PAGE
   ============================================================ */
.yh-lj-hero-grid { align-items: center; }
.yh-lj-hero-visual {
    position: relative; display: flex;
    align-items: center; justify-content: center;
    min-height: 300px;
}
.yh-lj-hex-grid { position: relative; width: 280px; height: 280px; }
.yh-lj-hex {
    position: absolute; width: 60px; height: 68px;
    background: var(--yh-primary-005);
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    transition: all 0.4s ease;
    animation: yhHexFloat 4s ease-in-out infinite;
}
.yh-lj-hex-1 { top: 10px; left: 90px; background: var(--yh-primary-010); animation-delay: 0s; }
.yh-lj-hex-2 { top: 80px; left: 20px; background: var(--yh-primary-0025); animation-delay: 0.5s; }
.yh-lj-hex-3 { top: 80px; left: 160px; background: var(--yh-primary-015); animation-delay: 1s; }
.yh-lj-hex-4 { top: 150px; left: 90px; background: var(--yh-primary-005); animation-delay: 1.5s; }
.yh-lj-hex-5 { top: 150px; left: 200px; background: var(--yh-primary-010); animation-delay: 2s; }
.yh-lj-hex-6 { top: 220px; left: 20px; background: var(--yh-primary-0025); animation-delay: 2.5s; }
.yh-lj-hex-7 { top: 220px; left: 160px; background: var(--yh-primary-015); animation-delay: 3s; }

@keyframes yhHexFloat {
    0%, 100% { transform: translateY(0) scale(1); opacity: 0.6; }
    50% { transform: translateY(-8px) scale(1.05); opacity: 1; }
}

.yh-lj-stats {
    padding: 1.5rem 2rem;
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 1rem; text-align: center;
    border: 1px solid var(--yh-border);
    border-radius: var(--yh-radius-xl);
    background: var(--yh-surface-glass);
}
.yh-lj-stats .yh-stat { padding: 0.5rem; }
.yh-lj-stats .yh-stat-k {
    font-size: 1.75rem; font-weight: 700;
    color: var(--yh-primary); display: block;
    font-family: var(--yh-font-display);
}
.yh-lj-stats .yh-stat-v {
    font-size: 0.8rem; color: var(--yh-muted-foreground);
    display: block; margin-top: 0.15rem;
}

.yh-lj-program-tabs { display: flex; gap: 0.5rem; margin-bottom: 2rem; flex-wrap: wrap; }
.yh-lj-tab {
    padding: 0.6rem 1.4rem;
    border: 1px solid var(--yh-border);
    background: var(--yh-card);
    color: var(--yh-muted-foreground);
    border-radius: var(--yh-radius-lg);
    font-family: var(--yh-font-sans);
    font-size: 0.875rem; font-weight: 500;
    cursor: pointer;
    transition: all 0.25s ease;
}
.yh-lj-tab:hover { border-color: var(--yh-primary); color: var(--yh-primary); }
.yh-lj-tab-active { background: var(--yh-primary); color: var(--yh-primary-foreground); border-color: var(--yh-primary); }
.yh-lj-panel { display: none; }
.yh-lj-panel-active { display: block; }

/* Course cards */
.yh-course-card { padding: 1.5rem; position: relative; }
.yh-course-icon {
    width: 44px; height: 44px; border-radius: var(--yh-radius-md);
    background: var(--yh-primary-005);
    display: flex; align-items: center; justify-content: center;
    color: var(--yh-primary); margin-bottom: 0.75rem;
}
.yh-course-badge {
    position: absolute; top: 1rem; right: 1rem;
    font-size: 0.65rem; padding: 0.2rem 0.6rem; border-radius: 100px;
    background: var(--yh-primary-010); color: var(--yh-primary);
    font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em;
}
.yh-course-title {
    font-size: 1rem; font-weight: 600; color: var(--yh-card-foreground);
    margin-bottom: 0.5rem; font-family: var(--yh-font-display);
    padding-right: 5rem;
}
.yh-course-desc {
    font-size: 0.85rem; color: var(--yh-muted-foreground);
    line-height: 1.6; margin-bottom: 1rem;
}
.yh-course-meta {
    display: flex; gap: 1rem;
    font-size: 0.75rem; color: var(--yh-muted-foreground);
    font-family: var(--yh-font-mono);
}

/* Timeline */
.yh-lj-timeline { padding: 2rem 0; position: relative; }
.yh-lj-timeline-track { position: relative; padding-left: 3rem; max-width: 720px; margin: 0 auto; }
.yh-lj-timeline-line {
    position: absolute; left: 1rem; top: 0; bottom: 0;
    width: 2px; background: var(--yh-border); border-radius: 2px;
}
.yh-lj-timeline-progress {
    position: absolute; left: 1rem; top: 0;
    width: 2px; background: var(--yh-primary); border-radius: 2px;
    transition: height 0.3s ease; z-index: 1;
}
.yh-lj-milestone { position: relative; padding-bottom: 2.5rem; opacity: 0.4; transition: all 0.4s ease; }
.yh-lj-milestone-active { opacity: 1; }
.yh-lj-milestone-marker {
    position: absolute; left: -2.5rem; top: 0;
    width: 2rem; height: 2rem; border-radius: 50%;
    background: var(--yh-card); border: 2px solid var(--yh-border);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.75rem; font-weight: 700;
    color: var(--yh-muted-foreground); transition: all 0.3s ease; z-index: 2;
}
.yh-lj-milestone-active .yh-lj-milestone-marker {
    background: var(--yh-primary); border-color: var(--yh-primary);
    color: var(--yh-primary-foreground);
    box-shadow: 0 0 0 4px var(--yh-primary-015);
}
.yh-lj-milestone-content {
    background: var(--yh-card); border: 1px solid var(--yh-border);
    border-radius: var(--yh-radius-lg); padding: 1.25rem 1.5rem;
    transition: all 0.3s ease;
}
.yh-lj-milestone-active .yh-lj-milestone-content {
    border-color: var(--yh-primary-010);
    box-shadow: 0 4px 20px rgba(var(--yh-primary-rgb), 0.08);
}
.yh-lj-milestone-step {
    font-size: 0.65rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.1em; color: var(--yh-primary);
    display: block; margin-bottom: 0.25rem; font-family: var(--yh-font-mono);
}
.yh-lj-milestone-title {
    font-size: 1rem; font-weight: 600; color: var(--yh-card-foreground);
    margin-bottom: 0.35rem; font-family: var(--yh-font-display);
}
.yh-lj-milestone-desc { font-size: 0.85rem; color: var(--yh-muted-foreground); line-height: 1.6; }

/* Dashboard */
.yh-lj-dashboard { padding: 1.5rem; border: 1px solid var(--yh-border); border-radius: var(--yh-radius-xl); }
.yh-lj-dash-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 1.5rem; padding-bottom: 1rem; border-bottom: 1px solid var(--yh-border);
}
.yh-lj-dash-user { display: flex; align-items: center; gap: 0.75rem; }
.yh-lj-dash-avatar {
    width: 40px; height: 40px; border-radius: 50%;
    background: var(--yh-primary); color: var(--yh-primary-foreground);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 0.85rem; font-family: var(--yh-font-display);
}
.yh-lj-dash-name { display: block; font-size: 0.9rem; font-weight: 600; color: var(--yh-card-foreground); }
.yh-lj-dash-program { display: block; font-size: 0.75rem; color: var(--yh-muted-foreground); font-family: var(--yh-font-mono); }
.yh-lj-dash-overall { text-align: right; }
.yh-lj-dash-pct { display: block; font-size: 1.5rem; font-weight: 700; color: var(--yh-primary); font-family: var(--yh-font-display); }
.yh-lj-dash-label { display: block; font-size: 0.75rem; color: var(--yh-muted-foreground); }
.yh-lj-dash-body { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.yh-lj-dash-modules { display: flex; flex-direction: column; gap: 0.5rem; }
.yh-lj-dash-module { display: flex; align-items: center; gap: 0.75rem; padding: 0.75rem; border-radius: var(--yh-radius-md); background: var(--yh-surface-elevated); transition: all 0.2s ease; }
.yh-lj-dash-done { opacity: 0.7; }
.yh-lj-dash-check { width: 24px; height: 24px; border-radius: 50%; background: var(--yh-success); color: #fff; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.yh-lj-dash-active { border: 1px solid var(--yh-primary-010); background: var(--yh-primary-0025); }
.yh-lj-dash-progress-ring { width: 24px; height: 24px; border-radius: 50%; border: 2px solid var(--yh-primary); border-top-color: transparent; animation: yhSpin 1s linear infinite; flex-shrink: 0; }
@keyframes yhSpin { to { transform: rotate(360deg); } }
.yh-lj-dash-pending { opacity: 0.5; }
.yh-lj-dash-lock { width: 24px; height: 24px; border-radius: 50%; background: var(--yh-muted); color: var(--yh-muted-foreground); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.yh-lj-dash-mod-title { display: block; font-size: 0.8rem; font-weight: 500; color: var(--yh-card-foreground); }
.yh-lj-dash-mod-status { display: block; font-size: 0.7rem; color: var(--yh-muted-foreground); }
.yh-lj-dash-calendar { padding-left: 1.5rem; border-left: 1px solid var(--yh-border); }
.yh-lj-dash-cal-header { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--yh-muted-foreground); margin-bottom: 1rem; }
.yh-lj-dash-event { display: flex; gap: 0.75rem; margin-bottom: 1rem; padding: 0.75rem; border-radius: var(--yh-radius-md); background: var(--yh-surface-elevated); }
.yh-lj-dash-event-date { text-align: center; min-width: 40px; }
.yh-lj-dash-event-day { display: block; font-size: 1.1rem; font-weight: 700; color: var(--yh-primary); font-family: var(--yh-font-display); }
.yh-lj-dash-event-month { display: block; font-size: 0.65rem; color: var(--yh-muted-foreground); text-transform: uppercase; }
.yh-lj-dash-event-title { display: block; font-size: 0.8rem; font-weight: 500; color: var(--yh-card-foreground); }
.yh-lj-dash-event-time { display: block; font-size: 0.7rem; color: var(--yh-muted-foreground); font-family: var(--yh-font-mono); }
.yh-lj-dash-enroll { margin-top: 1rem; width: 100%; text-align: center; display: block; }

/* Exam scheduler */
.yh-lj-scheduler-card { padding: 1.5rem; }
.yh-lj-exam-select { display: flex; flex-direction: column; gap: 0.75rem; margin-top: 1rem; }
.yh-lj-radio { display: flex; align-items: center; gap: 0.75rem; padding: 0.75rem 1rem; border: 1px solid var(--yh-border); border-radius: var(--yh-radius-md); cursor: pointer; transition: all 0.2s ease; }
.yh-lj-radio:hover { border-color: var(--yh-primary); }
.yh-lj-radio input[type="radio"] { display: none; }
.yh-lj-radio-mark { width: 18px; height: 18px; border-radius: 50%; border: 2px solid var(--yh-border-strong); flex-shrink: 0; position: relative; transition: all 0.2s ease; }
.yh-lj-radio input[type="radio"]:checked + .yh-lj-radio-mark { border-color: var(--yh-primary); }
.yh-lj-radio input[type="radio"]:checked + .yh-lj-radio-mark::after { content: ''; position: absolute; top: 3px; left: 3px; width: 8px; height: 8px; border-radius: 50%; background: var(--yh-primary); }
.yh-lj-exam-name { display: block; font-size: 0.9rem; font-weight: 600; color: var(--yh-card-foreground); }
.yh-lj-exam-meta { display: block; font-size: 0.75rem; color: var(--yh-muted-foreground); font-family: var(--yh-font-mono); }

.yh-lj-calendar { margin-top: 1rem; }
.yh-lj-cal-nav { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.yh-lj-cal-prev, .yh-lj-cal-next { width: 32px; height: 32px; border-radius: var(--yh-radius-sm); border: 1px solid var(--yh-border); background: var(--yh-card); color: var(--yh-card-foreground); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all 0.2s ease; }
.yh-lj-cal-prev:hover, .yh-lj-cal-next:hover { border-color: var(--yh-primary); color: var(--yh-primary); }
.yh-lj-cal-month { font-size: 0.9rem; font-weight: 600; color: var(--yh-card-foreground); font-family: var(--yh-font-display); }
.yh-lj-cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; }
.yh-lj-cal-day-head { text-align: center; font-size: 0.65rem; font-weight: 700; text-transform: uppercase; color: var(--yh-muted-foreground); padding: 0.5rem 0; font-family: var(--yh-font-mono); }
.yh-lj-cal-day { text-align: center; padding: 0.5rem; font-size: 0.8rem; color: var(--yh-card-foreground); border-radius: var(--yh-radius-sm); cursor: default; }
.yh-lj-cal-day-empty { visibility: hidden; }
.yh-lj-cal-day-available { cursor: pointer; color: var(--yh-primary); font-weight: 500; transition: all 0.2s ease; }
.yh-lj-cal-day-available:hover { background: var(--yh-primary-005); }
.yh-lj-cal-day-today { background: var(--yh-primary-010); font-weight: 700; cursor: pointer; }
.yh-lj-cal-day-selected { background: var(--yh-primary) !important; color: var(--yh-primary-foreground) !important; font-weight: 700; }
.yh-lj-schedule-btn { margin-top: 1rem; width: 100%; text-align: center; }

/* Certification cards */
.yh-lj-cert-item { padding: 1.5rem; text-align: center; }
.yh-lj-cert-badge { font-size: 1.5rem; font-weight: 800; color: var(--yh-primary); margin-bottom: 0.5rem; letter-spacing: -0.02em; }
.yh-lj-cert-name { font-size: 0.75rem; color: var(--yh-muted-foreground); line-height: 1.4; }

/* Dark mode overrides for LJ */
[data-theme="dark"] .yh-lj-hex { background: var(--yh-primary-020); }
[data-theme="dark"] .yh-lj-hex-1, [data-theme="dark"] .yh-lj-hex-5 { background: var(--yh-primary-025); }
[data-theme="dark"] .yh-lj-hex-2, [data-theme="dark"] .yh-lj-hex-6 { background: var(--yh-primary-015); }
[data-theme="dark"] .yh-lj-hex-3, [data-theme="dark"] .yh-lj-hex-7 { background: var(--yh-primary-010); }
[data-theme="dark"] .yh-lj-tab { border-color: var(--yh-border); }
[data-theme="dark"] .yh-lj-milestone-active .yh-lj-milestone-content { border-color: var(--yh-primary-010); }
[data-theme="dark"] .yh-lj-dash-module { background: var(--yh-surface); }

/* Blog toolbar */
.yh-blog-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}
.yh-blog-search {
    position: relative;
    flex: 1;
    max-width: 400px;
}
.yh-search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--yh-text-muted);
    pointer-events: none;
}
.yh-search-input {
    width: 100%;
    padding: 0.625rem 0.75rem 0.625rem 2.25rem;
    border: 1px solid var(--yh-border);
    border-radius: var(--yh-radius-md);
    background: var(--yh-input);
    color: var(--yh-foreground);
    font-size: 0.875rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}
.yh-search-input:focus {
    border-color: var(--yh-primary);
    box-shadow: 0 0 0 3px var(--yh-primary-010);
}
.yh-search-input::placeholder { color: var(--yh-text-muted); }
.yh-blog-count {
    font-size: 0.875rem;
    color: var(--yh-text-muted);
    white-space: nowrap;
}
.yh-blog-card {
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.yh-blog-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--yh-shadow-elevated);
}
.yh-blog-card-img {
    overflow: hidden;
    border-radius: var(--yh-radius-md) var(--yh-radius-md) 0 0;
}
.yh-blog-card-img img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}
.yh-blog-card:hover .yh-blog-card-img img { transform: scale(1.05); }
.yh-blog-card-body { padding: 1.25rem; }
.yh-blog-card-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--yh-text-muted);
    margin-bottom: 0.5rem;
}
.yh-blog-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.4;
    margin: 0 0 0.5rem 0;
    color: var(--yh-foreground);
}
.yh-blog-card-excerpt {
    font-size: 0.875rem;
    color: var(--yh-text-muted-dark);
    line-height: 1.6;
    margin: 0 0 1rem 0;
}
.yh-blog-card-cta {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--yh-primary);
}
[data-theme="dark"] .yh-search-input {
    background: var(--yh-input);
    border-color: var(--yh-border);
    color: var(--yh-foreground);
}

/* LJ responsive */
@media (max-width: 768px) {
    .yh-lj-stats { grid-template-columns: repeat(2, 1fr); }
    .yh-lj-dash-body { grid-template-columns: 1fr; }
    .yh-lj-dash-calendar { padding-left: 0; border-left: none; padding-top: 1rem; border-top: 1px solid var(--yh-border); }
    .yh-lj-program-tabs { overflow-x: auto; flex-wrap: nowrap; -webkit-overflow-scrolling: touch; }
    .yh-lj-tab { white-space: nowrap; flex-shrink: 0; }
    .yh-lj-hero-visual { display: none; }
    .yh-lj-milestone-content { padding: 1rem; }
}