/* ============================================
   ENGLISH COURSE LP — Dark Gold Premium Theme
   ============================================ */

/* --- RESET & VARIABLES --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    /* Gold palette */
    --gold: #C9A84C;
    --gold-light: #E2C878;
    --gold-dark: #A68A3E;
    --gold-glow: rgba(201, 168, 76, 0.25);
    --gold-subtle: rgba(201, 168, 76, 0.08);

    /* Dark palette */
    --bg-primary: #0A0A0B;
    --bg-secondary: #111113;
    --bg-card: #161618;
    --bg-card-hover: #1C1C1F;
    --bg-elevated: #1E1E21;

    /* Borders */
    --border: rgba(255, 255, 255, 0.06);
    --border-gold: rgba(201, 168, 76, 0.2);
    --border-gold-strong: rgba(201, 168, 76, 0.4);

    /* Text */
    --text-primary: #F5F5F5;
    --text-secondary: #A0A0A8;
    --text-muted: #6B6B73;

    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing */
    --section-pad: clamp(80px, 10vw, 140px);
    --container-max: 1200px;

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 clamp(20px, 4vw, 40px);
}

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

/* --- REVEAL ANIMATIONS --- */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }

/* --- BUTTONS --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 14px 32px;
    border-radius: 60px;
    border: none;
    cursor: pointer;
    transition: all 0.4s var(--ease-out);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.01em;
}
.btn--gold {
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    color: #0A0A0B;
    box-shadow: 0 4px 24px rgba(201, 168, 76, 0.25), inset 0 1px 0 rgba(255,255,255,0.2);
}
.btn--gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 40px rgba(201, 168, 76, 0.4), inset 0 1px 0 rgba(255,255,255,0.2);
}
.btn--gold:active { transform: translateY(0); }

.btn--outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-gold);
}
.btn--outline:hover {
    border-color: var(--gold);
    background: var(--gold-subtle);
    color: var(--gold-light);
}

.btn--lg { padding: 16px 38px; font-size: 1rem; }
.btn--xl { padding: 20px 48px; font-size: 1.1rem; }

/* --- NAVBAR --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all 0.4s var(--ease-out);
    background: transparent;
}
.navbar.scrolled {
    background: rgba(10, 10, 11, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
    padding: 10px 0;
}
.navbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.navbar__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 10;
}
.logo__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    color: #0A0A0B;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: -0.02em;
}
.logo__text {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.15rem;
    color: var(--text-primary);
}
.navbar__links {
    display: flex;
    gap: 32px;
}
.navbar__links a {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.3s;
    position: relative;
}
.navbar__links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--gold);
    transition: width 0.4s var(--ease-out);
}
.navbar__links a:hover { color: var(--gold-light); }
.navbar__links a:hover::after { width: 100%; }

.navbar__cta { font-size: 0.85rem; padding: 10px 24px; }

.navbar__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 10;
}
.navbar__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}
.navbar__toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.navbar__toggle.active span:nth-child(2) { opacity: 0; }
.navbar__toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* --- HERO --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 0 80px;
    overflow: hidden;
}
.hero__bg-image {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.18;
    z-index: 0;
    transition: opacity 0.6s;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}
.hero__bg-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, transparent 30%, transparent 70%, var(--bg-primary) 100%);
    pointer-events: none;
}
/* Video background */
.hero__bg-video {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    opacity: 0.2;
}
.hero__bg-video video,
.hero__bg-video iframe {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    object-fit: cover;
    pointer-events: none;
}
.hero__bg-video iframe {
    width: 120vw;
    height: 120vh;
}
.hero__bg-video::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, transparent 30%, transparent 70%, var(--bg-primary) 100%);
    pointer-events: none;
    z-index: 1;
}
.hero__bg-effects {
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.hero__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
}
.hero__orb--1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(201, 168, 76, 0.12), transparent 70%);
    top: -10%;
    right: -10%;
    animation: float 12s ease-in-out infinite;
}
.hero__orb--2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(201, 168, 76, 0.08), transparent 70%);
    bottom: 10%;
    left: -5%;
    animation: float 15s ease-in-out infinite reverse;
}
.hero__grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(201, 168, 76, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(201, 168, 76, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at 50% 50%, black, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at 50% 50%, black, transparent 70%);
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(20px, -30px) scale(1.05); }
    66% { transform: translate(-15px, 20px) scale(0.95); }
}

.hero__inner {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 860px;
    margin: 0 auto;
}
.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    border-radius: 40px;
    border: 1px solid var(--border-gold);
    background: var(--gold-subtle);
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--gold-light);
    margin-bottom: 32px;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}
.badge__dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--gold);
    animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.4); }
}

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 6vw, 4.8rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}
.hero__subtitle {
    font-size: clamp(1rem, 1.8vw, 1.2rem);
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 40px;
    line-height: 1.8;
}
.hero__ctas {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 64px;
}
.hero__stats {
    display: flex;
    justify-content: center;
    gap: 0;
    padding: 32px 0;
    border-top: 1px solid var(--border);
}
.stat {
    text-align: center;
    padding: 0 clamp(20px, 4vw, 48px);
}
.stat__number {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--gold);
    line-height: 1;
}
.stat__suffix {
    font-family: var(--font-display);
    font-size: clamp(1rem, 2vw, 1.4rem);
    color: var(--gold-light);
    font-weight: 400;
}
.stat__label {
    display: block;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 4px;
}
.stat__divider {
    width: 1px;
    background: var(--border);
    align-self: stretch;
}

.hero__scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}
.scroll__line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--gold), transparent);
    animation: scroll-pulse 2s ease-in-out infinite;
}
@keyframes scroll-pulse {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
    100% { opacity: 0; transform: scaleY(1); transform-origin: bottom; }
}

/* --- SECTION HEADER --- */
.section__tag {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--gold);
    margin-bottom: 16px;
    position: relative;
    padding-left: 24px;
}
.section__tag::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 14px;
    height: 1.5px;
    background: var(--gold);
}
.section__header {
    text-align: center;
    margin-bottom: 64px;
}
.section__header .section__tag {
    padding-left: 0;
}
.section__header .section__tag::before {
    display: none;
}
.section__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.01em;
}
.section__desc {
    color: var(--text-secondary);
    max-width: 620px;
    margin: 16px auto 0;
    font-size: 1.05rem;
}

/* --- METHOD / TIMELINE --- */
.method {
    padding: var(--section-pad) 0;
    background: var(--bg-secondary);
    position: relative;
}
.method::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-gold), transparent);
}

.timeline {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
}
.timeline__line {
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, var(--gold), var(--border-gold), transparent);
}
.timeline__item {
    display: flex;
    gap: 32px;
    margin-bottom: 48px;
    position: relative;
}
.timeline__item:last-child { margin-bottom: 0; }

.timeline__number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1.5px solid var(--border-gold);
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--gold);
    position: relative;
    z-index: 1;
    transition: all 0.4s var(--ease-out);
}
.timeline__item:hover .timeline__number {
    border-color: var(--gold);
    background: var(--gold-subtle);
    box-shadow: 0 0 20px var(--gold-glow);
}

.timeline__content {
    flex: 1;
    padding: 24px 28px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    transition: all 0.4s var(--ease-out);
}
.timeline__content:hover {
    border-color: var(--border-gold);
    background: var(--bg-card-hover);
    transform: translateX(4px);
}
.timeline__icon {
    color: var(--gold);
    margin-bottom: 12px;
}
.timeline__content h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}
.timeline__content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* --- CONTENT / LEVELS --- */
.content-section {
    padding: var(--section-pad) 0;
}
.levels {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}
.level-card {
    border-radius: 20px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    overflow: hidden;
    transition: all 0.4s var(--ease-out);
    position: relative;
}
.level-card:hover {
    border-color: var(--border-gold);
    transform: translateY(-4px);
}
.level-card--featured {
    border-color: var(--border-gold-strong);
    box-shadow: 0 8px 40px rgba(201, 168, 76, 0.1);
}
.level-card__badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 14px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    color: #0A0A0B;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 2;
}
.level-card__header {
    padding: 32px 28px 24px;
    position: relative;
    overflow: hidden;
}
.level-card__glow {
    position: absolute;
    top: -50%;
    right: -30%;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.3;
}
.level-card__header--basic .level-card__glow { background: rgba(100, 200, 150, 0.2); }
.level-card__header--inter .level-card__glow { background: rgba(201, 168, 76, 0.3); }
.level-card__header--adv .level-card__glow { background: rgba(180, 120, 200, 0.2); }

.level-card__tag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 8px;
}
.level-card__header h3 {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
}
.level-card__list {
    padding: 0 28px 28px;
}
.level-card__list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.5;
}
.level-card__list li:last-child { border-bottom: none; }
.level-card__list svg {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--gold);
}

/* --- DIFFERENTIALS --- */
.differentials {
    padding: var(--section-pad) 0;
    background: var(--bg-secondary);
    position: relative;
}
.differentials::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-gold), transparent);
}

/* Diferenciais como carrossel (não quebra com 4+ cards) */
.diff-carousel { position: relative; }
.diff-grid {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    padding: 6px 2px;
    -ms-overflow-style: none;
    scrollbar-width: none;
}
.diff-grid::-webkit-scrollbar { display: none; }
.diff-grid > .diff-card {
    flex: 0 0 calc((100% - 48px) / 3); /* 3 visíveis (2 gaps de 24px) */
    scroll-snap-align: start;
}
.diff-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    cursor: pointer;
    border: 1px solid var(--border-gold, rgba(226,183,114,.4));
    background: rgba(15,16,22,.85);
    color: var(--gold, #e2b772);
    backdrop-filter: blur(6px);
    transition: opacity .25s, background .25s, transform .15s;
}
.diff-nav:hover { background: rgba(15,16,22,.98); }
.diff-nav:active { transform: translateY(-50%) scale(.92); }
.diff-nav--prev { left: -16px; }
.diff-nav--next { right: -16px; }
.diff-nav[hidden] { display: none; }
@media (max-width: 900px) { .diff-grid > .diff-card { flex-basis: calc((100% - 24px) / 2); } }
@media (max-width: 600px) { .diff-grid > .diff-card { flex-basis: 86%; } .diff-nav { display: none; } }
.diff-card {
    padding: 36px 32px;
    border-radius: 20px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    transition: all 0.5s var(--ease-out);
    position: relative;
    overflow: hidden;
}
.diff-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}
.diff-card:hover::before { opacity: 1; }
.diff-card:hover {
    border-color: var(--border-gold);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}
.diff-card__icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--gold-subtle);
    border: 1px solid var(--border-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold);
    margin-bottom: 20px;
    transition: all 0.4s var(--ease-out);
}
.diff-card:hover .diff-card__icon {
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    color: #0A0A0B;
    border-color: transparent;
}
.diff-card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
}
.diff-card p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.7;
}

/* --- REALITY / STATS --- */
.reality {
    padding: var(--section-pad) 0;
}
.reality__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}
.reality__content .section__title {
    text-align: left;
    margin-bottom: 20px;
}
.reality__content p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
}
.reality__quote {
    margin-top: 32px;
    padding: 24px 28px;
    border-left: 3px solid var(--gold);
    background: var(--gold-subtle);
    border-radius: 0 12px 12px 0;
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-style: italic;
    color: var(--gold-light);
    position: relative;
}
.quote__mark {
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--gold);
    position: absolute;
    top: -10px;
    left: 16px;
    line-height: 1;
    opacity: 0.3;
}

.reality__numbers {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.reality__stat {
    padding: 28px 32px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    text-align: center;
    transition: all 0.4s var(--ease-out);
}
.reality__stat:hover {
    border-color: var(--border-gold);
    transform: translateX(4px);
}
.reality__stat-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--gold);
    line-height: 1;
}
.reality__stat-number small {
    font-size: 0.5em;
    color: var(--gold-light);
}
.reality__stat-label {
    display: block;
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-top: 6px;
}

/* --- PROFESSOR --- */
.professor {
    padding: var(--section-pad) 0;
    background: var(--bg-secondary);
    position: relative;
}
.professor::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-gold), transparent);
}
.professor__inner {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 64px;
    align-items: center;
}
.professor__frame {
    position: relative;
    aspect-ratio: 3 / 4;
    border-radius: 20px;
    overflow: hidden;
    background: var(--bg-card);
}
.professor__placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    gap: 16px;
}
.professor__placeholder span {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 500;
}
.professor__frame-border {
    position: absolute;
    inset: 0;
    border-radius: 20px;
    border: 1px solid var(--border-gold);
    pointer-events: none;
}
.professor__frame::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, var(--bg-secondary), transparent);
    pointer-events: none;
}

.professor__content .section__tag { margin-bottom: 12px; }
.professor__content .section__title { text-align: left; margin-bottom: 24px; }

.professor__bio {
    color: var(--text-secondary);
    font-size: 0.98rem;
    line-height: 1.8;
    margin-bottom: 16px;
}
.professor__credentials {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-top: 28px;
}
.credential {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    font-size: 0.88rem;
    font-weight: 500;
    transition: all 0.3s var(--ease-out);
}
.credential:hover {
    border-color: var(--border-gold);
    background: var(--gold-subtle);
}
.credential__icon {
    color: var(--gold);
    display: flex;
    flex-shrink: 0;
}

/* --- CERTIFICATION --- */
.certification {
    padding: var(--section-pad) 0;
}
.cert-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.cert-stat {
    text-align: center;
    padding: 48px 32px;
    border-radius: 20px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    transition: all 0.4s var(--ease-out);
    position: relative;
    overflow: hidden;
}
.cert-stat::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}
.cert-stat:hover::before { opacity: 1; }
.cert-stat:hover {
    border-color: var(--border-gold);
    transform: translateY(-4px);
}
.cert-stat__number {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--gold);
    line-height: 1;
}
.cert-stat__max, .cert-stat__plus {
    font-size: 0.45em;
    color: var(--gold-light);
    font-weight: 400;
}
.cert-stat__label {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    margin-top: 12px;
    color: var(--text-primary);
}
.cert-stat__desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* --- AUDIENCE --- */
.audience {
    padding: var(--section-pad) 0;
    background: var(--bg-secondary);
    position: relative;
}
.audience::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-gold), transparent);
}
.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}
.audience-card {
    padding: 40px 32px;
    border-radius: 20px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    text-align: center;
    transition: all 0.4s var(--ease-out);
}
.audience-card:hover {
    border-color: var(--border-gold);
    transform: translateY(-4px);
}
.audience-card__icon {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    background: var(--gold-subtle);
    border: 1px solid var(--border-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold);
    margin: 0 auto 24px;
    transition: all 0.4s;
}
.audience-card:hover .audience-card__icon {
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    color: #0A0A0B;
    border-color: transparent;
    transform: scale(1.05);
}
.audience-card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 12px;
}
.audience-card p {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

/* --- FINAL CTA --- */
.final-cta {
    padding: var(--section-pad) 0;
    position: relative;
}
.final-cta__inner {
    text-align: center;
    padding: 72px 48px;
    border-radius: 28px;
    border: 1px solid var(--border-gold);
    background: var(--bg-card);
    position: relative;
    overflow: hidden;
}
.final-cta__glow {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(201, 168, 76, 0.1), transparent 60%);
    pointer-events: none;
}
.final-cta__inner .section__tag {
    padding-left: 0;
}
.final-cta__inner .section__tag::before { display: none; }

.final-cta__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 700;
    line-height: 1.15;
    margin: 16px 0 20px;
}
.final-cta__text {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 32px;
    font-size: 1.05rem;
}
.final-cta__features {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 36px;
}
.final-cta__features span {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    color: var(--text-secondary);
}
.final-cta__features svg { color: var(--gold); }

.final-cta__note {
    margin-top: 16px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* --- FOOTER --- */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
}
.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}
.footer__brand {
    display: flex;
    align-items: center;
    gap: 10px;
}
.footer__brand .logo__icon { width: 32px; height: 32px; font-size: 0.75rem; border-radius: 8px; }
.footer__brand .logo__text { font-size: 0.95rem; }
.footer__copy {
    font-size: 0.82rem;
    color: var(--text-muted);
}
.footer__links {
    display: flex;
    gap: 24px;
}
.footer__links a {
    font-size: 0.82rem;
    color: var(--text-muted);
    transition: color 0.3s;
}
.footer__links a:hover { color: var(--gold); }

/* --- SPLIT SECTIONS (image + content) --- */
.split-section {
    padding: var(--section-pad) 0;
}
.split-section:nth-child(even) { background: var(--bg-secondary); }
.split-section:nth-child(even)::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-gold), transparent);
}
.split-section { position: relative; }
.split__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}
.split__inner--reverse { direction: rtl; }
.split__inner--reverse > * { direction: ltr; }
.split__content .section__tag { margin-bottom: 12px; }
.split__content .section__title { text-align: left; margin-bottom: 20px; }
.split__content p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 16px;
}
.split__content .btn { margin-top: 12px; }
.split__image {
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border);
    position: relative;
    aspect-ratio: 4 / 3;
    background: var(--bg-card);
}
.split__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s var(--ease-out);
}
.split__image:hover img { transform: scale(1.03); }
/* Contain mode — show full image without cropping */
.split__image--contain {
    aspect-ratio: auto;
    background: transparent;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
}
.split__image--contain img {
    object-fit: contain;
    height: auto;
    max-height: 500px;
    border-radius: 20px;
    border: 1px solid var(--border);
}
.split__image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    gap: 12px;
    font-size: 0.85rem;
}
/* Split video embed */
.split__video {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 */
    border-radius: 16px;
    overflow: hidden;
    background: #000;
}
.split__video-embed {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 16px;
}

.split__image::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    border: 1px solid var(--border-gold);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.4s;
}
.split__image:hover::after { opacity: 1; }

/* --- FORM SECTION --- */
.form-section {
    padding: var(--section-pad) 0;
    background: var(--bg-secondary);
    position: relative;
}
.form-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-gold), transparent);
}
.form__inner {
    max-width: 640px;
    margin: 0 auto;
}
.form__card {
    padding: 48px 40px;
    border-radius: 24px;
    border: 1px solid var(--border-gold);
    background: var(--bg-card);
    position: relative;
    overflow: hidden;
}
.form__card-glow {
    position: absolute;
    top: -40%;
    left: 50%;
    transform: translateX(-50%);
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(201,168,76,0.06), transparent 60%);
    pointer-events: none;
}
.form__field {
    margin-bottom: 18px;
}
.form__field label {
    display: block;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.02em;
}
.form__field input,
.form__field textarea,
.form__field select {
    width: 100%;
    padding: 13px 18px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
    -webkit-appearance: none;
}
.form__field textarea {
    min-height: 100px;
    resize: vertical;
}
.form__field select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23A0A0A8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}
.form__field input:focus,
.form__field textarea:focus,
.form__field select:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px var(--gold-glow);
}
.form__field input::placeholder,
.form__field textarea::placeholder {
    color: var(--text-muted);
}
.form__field--checkbox {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}
.form__field--checkbox input[type="checkbox"] {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 2px;
    accent-color: var(--gold);
    cursor: pointer;
}
.form__field--checkbox label {
    margin-bottom: 0;
    cursor: pointer;
}
.form__submit {
    width: 100%;
    margin-top: 8px;
}
.form__success {
    display: none;
    text-align: center;
    padding: 40px 20px;
}
.form__success.show { display: block; }
.form__success-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--gold-subtle);
    border: 2px solid var(--gold);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--gold);
}
.form__success h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: 8px;
}
.form__success p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width: 1024px) {
    .professor__inner { grid-template-columns: 300px 1fr; gap: 40px; }
    .reality__inner { gap: 40px; }
}

@media (max-width: 768px) {
    .navbar__links, .navbar__cta { display: none; }
    .navbar__toggle { display: flex; }

    /* Mobile menu */
    .navbar__links.active {
        display: flex;
        flex-direction: column;
        position: fixed;
        inset: 0;
        background: rgba(10, 10, 11, 0.97);
        backdrop-filter: blur(20px);
        align-items: center;
        justify-content: center;
        gap: 32px;
        z-index: 5;
    }
    .navbar__links.active a {
        font-size: 1.3rem;
        color: var(--text-primary);
    }

    .levels { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
    .reality__inner { grid-template-columns: 1fr; }
    .professor__inner { grid-template-columns: 1fr; }
    .professor__frame { max-width: 320px; margin: 0 auto; }
    .cert-stats { grid-template-columns: 1fr; }
    .audience-grid { grid-template-columns: 1fr; }

    .hero__stats { flex-direction: column; gap: 24px; }
    .stat__divider { width: 40px; height: 1px; margin: 0 auto; }

    .timeline__line { left: 23px; }

    .final-cta__inner { padding: 48px 24px; }
    .final-cta__features { flex-direction: column; align-items: center; gap: 12px; }

    .footer__inner { flex-direction: column; text-align: center; }

    .professor__credentials { grid-template-columns: 1fr; }

    .split__inner { grid-template-columns: 1fr; gap: 32px; }
    .split__inner--reverse { direction: ltr; }
    .split__image { max-width: 480px; margin: 0 auto; }
    .form__card { padding: 32px 20px; }
}

@media (max-width: 480px) {
    .hero { padding: 100px 0 60px; }
    .hero__title { font-size: 2.2rem; }
    .btn--lg { padding: 14px 28px; font-size: 0.92rem; }
    .btn--xl { padding: 16px 36px; font-size: 1rem; }
    .timeline__item { gap: 16px; }
    .timeline__content { padding: 20px; }
}

/* --- CUSTOM SCROLLBAR --- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-gold); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold-dark); }

/* --- SELECTION --- */
::selection {
    background: var(--gold);
    color: #0A0A0B;
}