/* Modern App Landing Page Style based on Huaban Reference with Custom Brand Colors */

:root {
    --color-primary: #8B5CF6; /* Purple */
    --color-accent: #D9F95D; /* Yellow/Green */
    --color-bg-light: #ffffff;
    --color-bg-gray: #f8f9fa;
    --color-bg-dark: #121212;
    --color-text-dark: #1a1a1a;
    --color-text-light: #ffffff;
    --color-text-gray: #888888;
    --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-light);
    color: var(--color-text-dark);
    line-height: 1.5;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Base local icon styles replacing external CSS */
.icon {
    display: inline-block;
    width: 1em;
    height: 1em;
    fill: currentColor;
    vertical-align: middle;
}

/* Utilities */
.highlight-text {
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: block;
    margin-bottom: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #fff;
    border: 2px solid var(--color-primary);
}

.btn-primary:hover {
    background-color: #7c3aed;
    border-color: #7c3aed;
}

.btn-accent,
.btn-green {
    background-color: transparent;
    color: #000;
    border: 2px solid #000;
}

.btn-accent:hover,
.btn-green:hover {
    background-color: rgba(0, 0, 0, 0.1);
    border-color: #000;
    color: #000;
}

.btn-black {
    background-color: #000;
    color: #fff;
    border: 2px solid #000;
}

.btn-black:hover {
    background-color: #333;
    border-color: #333;
}

.btn-dark {
    background-color: #000;
    color: #fff;
    border: 2px solid #000;
}

.btn-dark:hover {
    background-color: #333;
}

.btn-outline {
    background-color: #fff;
    color: #000;
    border: 2px solid #e0e0e0;
}

.btn-outline:hover {
    border-color: #000;
}

.btn-outline-dark {
    background-color: transparent;
    color: #000;
    border: 2px solid rgba(0,0,0,0.2);
}

.btn-outline-dark:hover {
    border-color: #000;
}

.mockup-img {
    width: 300px;
    height: 620px;
    object-fit: cover;
    border-radius: 40px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.15);
    border: 8px solid #fff;
    background-color: #f0f0f0;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    height: 70px;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 24px;
}

.logo {
    font-size: 20px;
    font-weight: 800;
    display: flex;
    align-items: center;
}

.logo-link {
    display: flex;
    align-items: center;
}

.logo .icon {
    color: var(--color-primary);
    margin-right: 8px;
    font-size: 24px;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    font-size: 13px;
    font-weight: 600;
    color: #555;
    transition: color 0.3s;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--color-primary);
}

.nav-btn {
    padding: 8px 20px;
    border: 1px solid #e0e0e0;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.3s;
}

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

/* Hero Section */
.hero {
    position: relative;
    padding-top: 150px;
    padding-bottom: 100px;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    top: 20%;
    right: 10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-primary) 0%, rgba(139, 92, 246, 0) 70%);
    opacity: 0.2;
    filter: blur(40px);
    z-index: -1;
    border-radius: 50%;
}

.hero-glow-2 {
    position: absolute;
    bottom: 0%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-accent) 0%, rgba(217, 249, 93, 0) 70%);
    opacity: 0.3;
    filter: blur(40px);
    z-index: -1;
    border-radius: 50%;
}

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

.hero-text {
    flex: 1;
    max-width: 500px;
}

.hero-text h1 {
    font-size: 56px;
    line-height: 1.1;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.hero-text h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 24px;
}

.hero-text p {
    font-size: 16px;
    color: var(--color-text-gray);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.hero-buttons .btn img {
    display: block;
    height: 28px;
    width: auto;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    position: relative;
}

/* Section 2: Stats (Dark) */
.section-dark {
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
    position: relative;
}

.stats-section {
    padding: 100px 24px;
    overflow: hidden;
}

.grid-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 0;
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.stats-container h2 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
}

.stats-container .subtitle {
    color: #888;
    font-size: 14px;
    margin-bottom: 60px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.stat-item {
    background: rgba(255,255,255,0.05);
    padding: 24px;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.1);
}

.stat-value {
    color: var(--color-accent);
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-desc {
    font-size: 13px;
    color: #888;
}

/* Section 3: Gradient Center */
.section-gradient {
    padding: 120px 24px;
    background: linear-gradient(180deg, #ffffff 0%, rgba(139, 92, 246, 0.1) 50%, rgba(217, 249, 93, 0.3) 100%);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.bg-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 12vw;
    font-weight: 900;
    color: rgba(139, 92, 246, 0.05);
    white-space: nowrap;
    z-index: 0;
    pointer-events: none;
}

.center-content {
    position: relative;
    z-index: 1;
    display: inline-block;
}

.center-img {
    position: relative;
    z-index: 2;
}

.floating-badge {
    position: absolute;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    padding: 16px 24px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    z-index: 3;
    text-align: left;
}

.badge-left {
    top: 20%;
    left: -150px;
}

.badge-right {
    bottom: 20%;
    right: -150px;
}

.badge-icon {
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
}

.badge-icon .icon {
    fill: #fff;
}

.badge-text strong {
    display: block;
    font-size: 16px;
    margin-bottom: 4px;
}

.badge-text span {
    font-size: 12px;
    color: #666;
}

/* Section 4: Dark Cards BG */
.cards-bg-section {
    padding: 150px 24px;
}

.bg-cards-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
    opacity: 0.3;
}

.bg-card {
    position: absolute;
    background-color: #222;
    border-radius: 20px;
    background-image: url('images/3.jpg');
    background-size: cover;
    background-position: center;
    filter: grayscale(100%) contrast(1.2);
}

.c1 { width: 300px; height: 200px; top: 10%; left: 5%; opacity: 0.5; }
.c2 { width: 250px; height: 350px; top: 40%; left: 15%; opacity: 0.3; }
.c3 { width: 400px; height: 250px; bottom: 10%; left: 30%; opacity: 0.4; }
.c4 { width: 200px; height: 200px; top: 20%; right: 20%; opacity: 0.6; }
.c5 { width: 350px; height: 400px; bottom: 15%; right: 5%; opacity: 0.3; }
.c6 { width: 280px; height: 180px; top: 5%; right: 40%; opacity: 0.4; }

.cards-content {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.cards-content .text-left {
    max-width: 400px;
}

.cards-content h2 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 24px;
}

.cards-content p {
    font-size: 16px;
    color: #aaa;
    line-height: 1.6;
}

/* Section 5: Light Glow */
.section-light {
    background-color: var(--color-bg-light);
    position: relative;
    overflow: hidden;
}

.glow-section {
    padding: 150px 24px;
}

.side-glow {
    position: absolute;
    top: 30%;
    left: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--color-primary) 0%, rgba(139, 92, 246, 0) 70%);
    opacity: 0.15;
    filter: blur(60px);
    z-index: 0;
    border-radius: 50%;
}

.glow-content {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.glow-content .text-left {
    flex: 1;
    max-width: 350px;
}

.glow-content h2 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 24px;
}

.glow-content p {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
}

.glow-content .image-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

.glow-content .images-right {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.img-stack {
    position: relative;
    width: 250px;
    height: 400px;
}

.stack-img {
    position: absolute;
    border-radius: 20px;
    background-color: #eee;
    background-image: url('images/12.jpg');
    background-size: cover;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.s1 {
    width: 200px;
    height: 300px;
    top: 0;
    right: 0;
    z-index: 2;
}

.s2 {
    width: 220px;
    height: 320px;
    bottom: 0;
    left: 0;
    z-index: 1;
    opacity: 0.6;
    filter: grayscale(100%);
}

/* Section 6: Map */
.section-map {
    position: relative;
    padding: 150px 24px;
    background-color: #fafafa;
    overflow: hidden;
}

.map-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at center, rgba(139, 92, 246, 0.05) 0%, transparent 70%);
    background-size: cover;
    z-index: 0;
}

/* Drawing concentric circles */
.map-bg::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 30%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    border: 1px dashed rgba(139, 92, 246, 0.2);
    border-radius: 50%;
}
.map-bg::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 30%;
    transform: translate(-50%, -50%);
    width: 1200px;
    height: 1200px;
    border: 1px dashed rgba(139, 92, 246, 0.1);
    border-radius: 50%;
}

.map-content {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.image-left {
    flex: 1;
    position: relative;
}

.relative-img {
    position: relative;
    z-index: 2;
}

.avatar {
    position: absolute;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 3px solid #fff;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    overflow: hidden;
    z-index: 3;
}

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

.a1 { top: 10%; right: 10%; width: 80px; height: 80px; }
.a2 { bottom: 20%; left: -20px; }
.a3 { bottom: 5%; right: 20%; width: 70px; height: 70px; }

.map-content .text-right {
    flex: 1;
    max-width: 400px;
    padding-left: 60px;
}

.map-content h2 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.1;
}

.map-content p {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
}

/* Footer */
.footer {
    background-color: var(--color-bg-dark);
    padding: 80px 24px 60px;
    color: #fff;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.footer-buttons {
    display: flex;
    gap: 16px;
}

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

.link-title {
    font-weight: 800;
    font-size: 14px;
    color: var(--color-accent);
}

.footer-links a {
    font-size: 13px;
    font-weight: 600;
    opacity: 0.7;
    transition: opacity 0.3s;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--color-primary);
}

.footer-copyright {
    font-size: 12px;
    opacity: 0.6;
    font-weight: 500;
}

.icp-link {
    color: inherit;
}

.icp-link:hover {
    text-decoration: underline;
    color: var(--color-accent);
}

.footer-right {
    text-align: right;
}

.footer-logo {
    font-size: 48px;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.footer-logo span {
    font-size: 32px;
    font-weight: 800;
    color: var(--color-primary);
}

.social-icons {
    display: flex;
    justify-content: flex-end;
    gap: 16px;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: #222;
    color: var(--color-accent);
    border-radius: 50%;
    font-size: 20px;
    transition: all 0.3s;
}

.social-icons a:hover {
    transform: translateY(-3px);
    background-color: var(--color-primary);
    color: #fff;
}

.social-icons a.is-disabled,
.btn.is-disabled {
    opacity: 0.45;
    pointer-events: none;
}

.social-icons .icon {
    fill: currentColor;
}

.social-icons a img {
    display: block;
    width: 22px;
    height: 22px;
    object-fit: contain;
}

.browser-guide-mask {
    position: fixed;
    inset: 0;
    z-index: 3000;
    background: rgba(0, 0, 0, 0.72);
    display: none;
}

.browser-guide-mask.visible {
    display: block;
}

.browser-guide-panel {
    position: relative;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.browser-guide-arrow {
    position: absolute;
    top: 10px;
    right: 8px;
    width: min(29vw, 220px);
    height: auto;
    object-fit: contain;
}

.browser-guide-copy {
    position: absolute;
    top: 168px;
    right: 18px;
    width: min(72vw, 320px);
    text-align: right;
    color: #fff;
}

.browser-guide-copy p {
    margin: 0;
    font-size: 22px;
    line-height: 1.65;
    font-weight: 600;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.28);
}

.qr-modal {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.qr-modal.visible {
    display: flex;
}

.qr-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
}

.qr-modal-content {
    position: relative;
    width: min(90vw, 360px);
    background: #fff;
    border-radius: 24px;
    padding: 24px;
    text-align: center;
    z-index: 1;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.25);
}

.qr-modal-content h3 {
    margin: 0 0 20px 0;
    font-size: 22px;
    color: var(--color-text-dark);
}

.qr-modal-content img {
    width: 100%;
    border-radius: 16px;
    display: block;
}

.qr-modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    border: none;
    background: transparent;
    font-size: 28px;
    line-height: 1;
    color: #999;
    cursor: pointer;
}

/* Responsive */
@media (max-width: 992px) {
    .navbar {
        height: auto;
    }

    .nav-container {
        height: auto;
        padding: 12px 18px;
        flex-wrap: wrap;
        gap: 12px 16px;
        align-items: center;
    }

    .logo {
        flex: 1 1 auto;
        min-width: 0;
    }

    .nav-btn {
        flex: 0 0 auto;
        margin-left: auto;
    }

    .nav-links {
        order: 3;
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
        gap: 12px 20px;
    }

    .hero-content, .cards-content, .glow-content, .map-content {
        flex-direction: column;
        text-align: center;
        gap: 60px;
    }

    .hero-text, .cards-content .text-left, .glow-content .text-left, .map-content .text-right {
        max-width: 100%;
        padding: 0;
    }

    .hero-buttons {
        justify-content: center;
    }

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

    .glow-content .images-right {
        display: none;
    }

    .footer-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 40px;
    }

    .footer-right {
        text-align: left;
    }

    .social-icons {
        justify-content: flex-start;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 10px 14px 12px;
        gap: 10px 12px;
    }

    .logo {
        font-size: 18px;
    }

    .logo .icon {
        font-size: 22px;
        margin-right: 6px;
    }

    .nav-btn {
        padding: 7px 14px;
        font-size: 12px;
    }

    .nav-links {
        gap: 8px 14px;
    }

    .nav-links a {
        font-size: 12px;
    }

    .hero {
        padding-top: 190px;
    }

    .page-container {
        padding-top: 190px;
    }

    .browser-guide-arrow {
        top: 8px;
        right: 2px;
        width: min(29vw, 196px);
    }

    .browser-guide-copy {
        top: 148px;
        right: 45px;
        width: min(76vw, 280px);
    }

    .browser-guide-copy p {
        font-size: 16px;
        line-height: 1.7;
    }

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

    .hero-text h1, .cards-content h2, .glow-content h2, .map-content h2 {
        font-size: 40px;
    }

    .floating-badge {
        position: relative;
        left: 0;
        right: 0;
        top: 0;
        bottom: 0;
        margin: 20px auto;
        justify-content: center;
        width: 90%;
    }

    .page-content {
        padding: 36px 22px;
    }
}
/* ==========================================================================
   Page Specific Styles (About, Privacy, Terms, Tutorial, Contact)
   ========================================================================== */

.page-container {
    padding: 150px 24px 80px;
    min-height: 80vh;
    background-color: var(--color-bg-gray);
}

.page-content {
    max-width: 900px;
    margin: 0 auto;
    background: #fff;
    padding: 60px;
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
    line-height: 1.8;
    color: #444;
}

/* Legal Pages (Privacy, Terms, Disclaimer) */
.page-content h1 {
    font-size: 28px;
    color: #000000;
    margin-bottom: 40px;
    text-align: center;
    font-weight: normal;
}

.page-content h2 {
    font-size: 24px;
    color: var(--color-text-dark);
    margin-top: 50px;
    margin-bottom: 20px;
    border-left: 4px solid var(--color-primary);
    padding-left: 16px;
}

.page-content h3 {
    font-size: 20px;
    color: var(--color-text-dark);
    margin-top: 30px;
    margin-bottom: 16px;
}

.page-content p {
    margin-bottom: 24px;
    font-size: 16px;
}

.page-content ul {
    margin-bottom: 24px;
    padding-left: 24px;
}

.agreement-content p {
    margin-bottom: 24px;
}

.page-content li {
    margin-bottom: 12px;
}

.last-updated {
    text-align: right;
    color: var(--color-text-gray);
    font-size: 14px;
    margin-bottom: 40px;
}

/* About Page */
.about-hero {
    text-align: center;
    margin-bottom: 60px;
}

.about-hero h1 {
    font-size: 48px;
    color: var(--color-text-dark);
    margin-bottom: 24px;
}

.about-hero p {
    font-size: 18px;
    color: var(--color-text-gray);
    max-width: 800px;
    margin: 0 auto;
}

.vision-mission {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 40px;
}

.vm-card {
    background: var(--color-bg-gray);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    border: 1px solid rgba(0,0,0,0.05);
}

.vm-icon {
    font-size: 48px;
    margin-bottom: 24px;
}

.vm-card h3 {
    margin-bottom: 16px;
    font-size: 24px;
}

/* Contact Page */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-top: 40px;
}

.info-item {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
}

.info-icon {
    width: 60px;
    height: 60px;
    background: rgba(139, 92, 246, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    color: var(--color-primary);
    font-size: 24px;
}

.info-text h4 {
    margin: 0 0 8px 0;
    font-size: 18px;
}

.info-text p {
    margin: 0;
    color: var(--color-text-gray);
}

.contact-form {
    background: #fff;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 16px;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    font-family: inherit;
    font-size: 16px;
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

.submit-btn {
    width: 100%;
    padding: 16px;
    border-radius: 12px;
    font-size: 16px;
}

/* Tutorial Page */
.iframe-wrapper {
    position: relative;
    width: 100%;
    height: 800px;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    background: #fff;
    margin-top: 40px;
}

.iframe-wrapper iframe {
    width: 100%;
    height: 100%;
    border: none;
}

@media (max-width: 768px) {
    .page-content {
        padding: 30px 20px;
    }
    
    .vision-mission, .contact-grid {
        grid-template-columns: 1fr;
    }
}