/* =====================================================
   VraxiStream 維拉溪 - Landing Page Stylesheet
   ===================================================== */

/* ---- CSS Variables ---- */
:root {
    --primary: #6C3CE1;
    --primary-dark: #5228B8;
    --primary-light: #8B5CF6;
    --accent: #F59E0B;
    --accent-dark: #D97706;
    --dark: #0F172A;
    --dark-soft: #1E293B;
    --text: #334155;
    --text-light: #64748B;
    --text-lighter: #94A3B8;
    --bg: #FFFFFF;
    --bg-soft: #F8FAFC;
    --bg-muted: #F1F5F9;
    --border: #E2E8F0;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xs: 6px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 25px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
    --shadow-lg: 0 20px 50px -12px rgba(0,0,0,0.15);
    --shadow-xl: 0 25px 60px -15px rgba(0,0,0,0.2);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-cn: 'Noto Sans TC', 'Noto Sans SC', 'PingFang HK', 'Microsoft YaHei', sans-serif;
    --font-en: 'Inter', 'Noto Sans TC', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

/* ===================== NAVBAR ===================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255,255,255,0.96);
    border-bottom-color: var(--border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    height: 40px;
    width: auto;
    border-radius: 8px;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.logo-en {
    font-family: var(--font-en);
    font-weight: 700;
    font-size: 17px;
    color: var(--dark);
    letter-spacing: -0.3px;
}

.logo-cn {
    font-size: 12px;
    color: var(--text-light);
    font-weight: 500;
}

.nav-links {
    display: flex;
    gap: 6px;
}

.nav-links a {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    border-radius: var(--radius-xs);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary);
    background: rgba(108,60,225,0.06);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ---- Language Switcher ---- */
.lang-switcher {
    display: flex;
    gap: 2px;
    background: var(--bg-muted);
    padding: 3px;
    border-radius: var(--radius-sm);
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 5px 10px;
    border: none;
    background: transparent;
    border-radius: var(--radius-xs);
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-light);
    transition: var(--transition);
    font-family: var(--font-cn);
}

.lang-btn:hover {
    color: var(--primary);
}

.lang-btn.active {
    background: var(--bg);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

/* Flag Icons (image-based) */
.flag-icon {
    width: 22px;
    height: 16px;
    border-radius: 3px;
    display: inline-block;
    background-size: cover;
    background-position: center;
    border: 1px solid rgba(0,0,0,0.08);
    flex-shrink: 0;
    object-fit: cover;
}

.flag-hk {
    background-image: url('images/hk.png');
}

.flag-cn {
    background-image: url('images/cn.webp');
}

.flag-tw {
    background-image: url('images/tw.png');
}

/* Nav CTA */
.nav-cta {
    font-size: 13px !important;
    padding: 8px 20px !important;
}

/* ---- CTA Button ---- */
.cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-cn);
    white-space: nowrap;
}

.cta-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(108,60,225,0.35);
}

.cta-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 6px 20px rgba(108,60,225,0.45);
    transform: translateY(-2px);
}

.cta-outline {
    background: rgba(255,255,255,0.15);
    color: #fff;
    border: 2px solid rgba(255,255,255,0.4);
    backdrop-filter: blur(10px);
}

.cta-outline:hover {
    background: rgba(255,255,255,0.25);
    border-color: rgba(255,255,255,0.7);
}

.cta-plan {
    background: var(--bg-muted);
    color: var(--primary);
    border: 1px solid var(--border);
}

.cta-plan:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-2px);
}

.cta-large {
    padding: 16px 40px;
    font-size: 17px;
    border-radius: var(--radius);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.mobile-menu-btn span {
    width: 22px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 5px);
}
.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}
.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -5px);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    padding: 32px 24px;
    flex-direction: column;
    gap: 24px;
    z-index: 999;
}

.mobile-menu.open {
    display: flex;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mobile-nav-links a {
    padding: 14px 16px;
    font-size: 17px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.mobile-nav-links a:hover {
    background: var(--bg-muted);
    color: var(--primary);
}

.mobile-lang-switcher {
    display: flex;
    gap: 6px;
    padding: 0 16px;
}

.mobile-lang-switcher .lang-btn {
    padding: 8px 14px;
    font-size: 14px;
    background: var(--bg-muted);
    border-radius: var(--radius-xs);
}

.mobile-lang-switcher .lang-btn.active {
    background: var(--primary);
    color: #fff;
}

.mobile-cta {
    margin: 0 16px;
    background: var(--primary);
    color: #fff;
    text-align: center;
    padding: 14px;
    font-size: 16px;
}

/* ===================== HERO ===================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
}

.hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(15,23,42,0.88) 0%,
        rgba(108,60,225,0.75) 50%,
        rgba(15,23,42,0.82) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 120px 24px 80px;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 20px;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 50px;
    color: rgba(255,255,255,0.9);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 28px;
    backdrop-filter: blur(10px);
    letter-spacing: 0.5px;
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
}

.hero-brand {
    font-family: var(--font-en);
    font-size: 56px;
    font-weight: 900;
    color: #fff;
    letter-spacing: -1.5px;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 28px;
    font-weight: 600;
    color: rgba(255,255,255,0.92);
    letter-spacing: 2px;
}

.hero-desc {
    font-size: 17px;
    color: rgba(255,255,255,0.75);
    line-height: 1.8;
    margin-bottom: 36px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-number {
    font-family: var(--font-en);
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.5px;
}

.stat-label {
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    font-weight: 400;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,0.2);
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.hero-scroll a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.3);
    color: rgba(255,255,255,0.5);
    font-size: 16px;
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* ===================== SECTION HEADER ===================== */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 4px 16px;
    background: rgba(108,60,225,0.08);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
    line-height: 1.3;
}

.section-desc {
    font-size: 16px;
    color: var(--text-light);
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ===================== SERVICES ===================== */
.services {
    background: var(--bg-soft);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 36px 28px;
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon-wrap {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 20px;
    background: var(--bg-muted);
}

.service-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.service-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 10px;
}

.service-desc {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ===================== PLATFORM ===================== */
.platform {
    background: var(--bg);
}

.platform-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.platform-image {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.platform-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.platform-image:hover img {
    transform: scale(1.03);
}

.platform-desc {
    font-size: 16px;
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 28px;
}

.platform-features {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 32px;
}

.platform-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--text);
}

.platform-features li i {
    color: var(--primary);
    font-size: 16px;
    flex-shrink: 0;
}

/* ===================== SHOWCASE ===================== */
.showcase {
    padding: 0 0 100px;
    background: var(--bg);
}

.showcase-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 16px;
    max-height: 400px;
}

.showcase-item {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
}

.showcase-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.showcase-item:hover img {
    transform: scale(1.05);
}

.showcase-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15,23,42,0.7) 0%, transparent 60%);
    display: flex;
    align-items: flex-end;
    padding: 24px;
    opacity: 0;
    transition: var(--transition);
}

.showcase-item:hover .showcase-overlay {
    opacity: 1;
}

.showcase-overlay span {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
}

.showcase-large {
    grid-row: span 1;
}

/* ===================== EDUCATION ===================== */
.education {
    background: var(--bg-soft);
}

.edu-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.edu-desc {
    font-size: 16px;
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 32px;
}

.edu-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 32px;
}

.edu-feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.edu-feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: rgba(108,60,225,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 20px;
    flex-shrink: 0;
}

.edu-feature h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.edu-feature p {
    font-size: 13px;
    color: var(--text-light);
}

.edu-image {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.edu-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.edu-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 8px 18px;
    background: rgba(255,255,255,0.95);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 6px;
}

.edu-badge i {
    color: #EF4444;
    font-size: 12px;
}

/* ===================== PLANS ===================== */
.plans {
    background: var(--bg);
}

.plans-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.plan-card {
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.plan-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.plan-featured {
    border-color: var(--primary);
    border-width: 2px;
    box-shadow: var(--shadow-md);
}

.plan-featured:hover {
    box-shadow: var(--shadow-xl);
}

.plan-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 14px;
    background: var(--primary);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    border-radius: 50px;
    z-index: 2;
}

.plan-img-wrap {
    height: 180px;
    overflow: hidden;
}

.plan-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.plan-card:hover .plan-img-wrap img {
    transform: scale(1.05);
}

.plan-content {
    padding: 28px;
}

.plan-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.plan-desc {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 20px;
}

.plan-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 24px;
}

.plan-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text);
}

.plan-features li i {
    color: var(--primary);
    font-size: 13px;
    flex-shrink: 0;
}

.plan-content .cta-btn {
    width: 100%;
}

/* ===================== ABOUT ===================== */
.about {
    background: var(--bg-soft);
}

.about-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-images {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 16px;
}

.about-img-main,
.about-img-secondary {
    border-radius: var(--radius);
    overflow: hidden;
    object-fit: cover;
    height: 360px;
    width: 100%;
}

.about-img-secondary {
    height: 360px;
}

.about-desc {
    font-size: 15px;
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 16px;
}

.about-highlights {
    display: flex;
    gap: 24px;
    margin-top: 28px;
}

.highlight {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.highlight i {
    color: var(--primary);
    font-size: 18px;
}

.highlight span {
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
}

/* ===================== CTA SECTION ===================== */
.cta-section {
    position: relative;
    padding: 100px 0;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    inset: 0;
}

.cta-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cta-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(108,60,225,0.92) 0%,
        rgba(82,40,184,0.9) 100%
    );
}

.cta-content-wrap {
    position: relative;
    z-index: 2;
    text-align: center;
}

.cta-title {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.cta-desc {
    font-size: 17px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 36px;
}

/* ===================== FOOTER ===================== */
.footer {
    background: var(--dark);
    padding: 48px 0 32px;
}

.footer-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    margin-bottom: 24px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo {
    height: 36px;
    width: auto;
    border-radius: 8px;
}

.footer-brand-en {
    font-family: var(--font-en);
    font-weight: 700;
    font-size: 16px;
    color: #fff;
    display: block;
}

.footer-brand-cn {
    font-size: 12px;
    color: var(--text-lighter);
    display: block;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 14px;
    color: var(--text-lighter);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-lighter);
}

/* ===================== FORM POPUP ===================== */
.form-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15,23,42,0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.form-popup {
    background: var(--bg);
    border-radius: 24px;
    padding: 28px;
    padding-top: 56px;
    max-width: 520px;
    width: 100%;
    position: relative;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.3s ease;
    overflow: hidden;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-muted);
    border-radius: 50%;
    font-size: 22px;
    color: var(--text-light);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    line-height: 1;
    z-index: 10;
}

.form-close:hover {
    background: var(--border);
    color: var(--dark);
}

/* ===================== ANIMATIONS ===================== */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 1024px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .plans-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .plans-grid .plan-card:last-child {
        grid-column: span 2;
        max-width: 50%;
        margin: 0 auto;
    }
}

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

    .hero-brand { font-size: 38px; }
    .hero-subtitle { font-size: 20px; }
    .hero-desc { font-size: 15px; }

    .section-title { font-size: 28px; }
    .section-desc { font-size: 14px; }

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

    .platform-layout,
    .edu-layout,
    .about-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .edu-layout {
        direction: ltr;
    }

    .edu-image {
        order: -1;
    }

    .showcase-grid {
        grid-template-columns: 1fr;
        max-height: none;
    }

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

    .plans-grid .plan-card:last-child {
        grid-column: span 1;
        max-width: 100%;
    }

    .about-images {
        grid-template-columns: 1fr;
    }

    .about-img-main,
    .about-img-secondary {
        height: 240px;
    }

    .about-highlights {
        flex-direction: column;
        gap: 12px;
    }

    .hero-stats {
        gap: 24px;
    }

    .stat-number { font-size: 26px; }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .footer-top {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }

    .cta-title { font-size: 28px; }

    .form-popup {
        padding: 20px;
        padding-top: 52px;
        border-radius: 20px;
        margin: 12px;
    }

    .lang-switcher {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-brand { font-size: 30px; }
    .hero-subtitle { font-size: 17px; letter-spacing: 1px; }
    .section-title { font-size: 24px; }
    .nav-cta { display: none; }
}