/* ============================================
   CertiLife PCO - 카카오 노란색 테마 스타일시트
   ============================================ */

/* === CSS Variables === */
:root {
    /* Kakao Yellow Theme */
    --kakao-yellow: #FEE500;
    --kakao-yellow-light: #FFF8CC;
    --kakao-yellow-lighter: #FFFCE5;
    --kakao-yellow-dark: #E6CF00;
    --kakao-brown: #3C1E1E;
    --kakao-black: #191919;

    /* Extended Palette */
    --primary: #FEE500;
    --primary-hover: #E6CF00;
    --primary-light: #FFF8CC;
    --primary-lighter: #FFFCE5;
    --secondary: #FFB800;
    --accent: #FF6B00;

    /* Neutrals */
    --gray-50: #FAFAFA;
    --gray-100: #F5F5F5;
    --gray-200: #EEEEEE;
    --gray-300: #E0E0E0;
    --gray-400: #BDBDBD;
    --gray-500: #9E9E9E;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;

    /* Text */
    --text-primary: #191919;
    --text-secondary: #555555;
    --text-muted: #888888;
    --text-white: #FFFFFF;

    /* Backgrounds */
    --bg-white: #FFFFFF;
    --bg-light: #FFFCE5;
    --bg-section: #FFF9E6;
    --bg-dark: #1A1A1A;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-xl: 0 16px 50px rgba(0,0,0,0.15);
    --shadow-yellow: 0 8px 30px rgba(254,229,0,0.3);

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* Font */
    --font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

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

ul { list-style: none; }

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

/* === Container === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 15px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-family);
    gap: 8px;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: var(--kakao-black);
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-yellow);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--gray-300);
}

.btn-outline:hover {
    border-color: var(--primary);
    background: var(--primary-lighter);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 16px;
}

.btn-full {
    width: 100%;
}

/* === Navigation === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
    padding: 0;
}

.navbar.scrolled {
    border-bottom-color: var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    font-size: 22px;
    font-weight: 800;
    color: var(--kakao-black);
    display: flex;
    align-items: center;
    gap: 2px;
}

.logo-icon {
    color: var(--primary);
    font-size: 24px;
    margin-right: 4px;
}

.logo-sub {
    color: var(--primary-hover);
    font-weight: 600;
    font-size: 18px;
    margin-left: 4px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--primary-lighter);
}

.nav-cta-link {
    background: var(--primary);
    color: var(--kakao-black) !important;
    font-weight: 600;
}

.nav-cta-link:hover {
    background: var(--primary-hover) !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
    border-radius: 2px;
}

/* === Hero Section === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-lighter) 0%, var(--bg-white) 50%, var(--primary-light) 100%);
    padding-top: 72px;
    overflow: hidden;
}

.hero-content {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
    padding: var(--space-3xl) 0;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--bg-white);
    border: 1px solid var(--primary);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-sm);
}

.hero-title {
    font-size: clamp(36px, 6vw, 60px);
    font-weight: 900;
    line-height: 1.2;
    color: var(--kakao-black);
    margin-bottom: var(--space-lg);
    letter-spacing: -1px;
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-3xl);
}

.hero-trust {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    padding: var(--space-lg) var(--space-xl);
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
}

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

.trust-number {
    display: block;
    font-size: 28px;
    font-weight: 800;
    color: var(--kakao-black);
}

.trust-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 2px;
}

.trust-divider {
    width: 1px;
    height: 40px;
    background: var(--gray-200);
}

/* Hero Background Shapes */
.hero-bg-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.15;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -100px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: var(--secondary);
    bottom: -50px;
    left: -80px;
    animation: float 10s ease-in-out infinite reverse;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: var(--primary);
    top: 50%;
    right: 10%;
    animation: float 12s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(5deg); }
}

/* === Section Common === */
.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary);
    color: var(--kakao-black);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    color: var(--kakao-black);
    margin-bottom: var(--space-md);
    letter-spacing: -0.5px;
}

.section-desc {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 540px;
    margin: 0 auto;
}

/* === Services Section === */
.services {
    padding: var(--space-4xl) 0;
    background: var(--bg-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-lg);
}

.service-card {
    position: relative;
    padding: var(--space-xl);
    background: var(--bg-white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gray-200);
    transition: var(--transition);
}

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

.service-card:hover::before {
    background: var(--primary);
    height: 4px;
}

.service-card.featured {
    border-color: var(--primary);
    background: var(--primary-lighter);
}

.service-card.featured::before {
    background: var(--primary);
    height: 4px;
}

.service-badge-label {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 12px;
    background: var(--primary);
    color: var(--kakao-black);
    font-size: 11px;
    font-weight: 700;
    border-radius: var(--radius-full);
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    color: var(--kakao-black);
    transition: var(--transition);
}

.service-icon svg {
    width: 30px;
    height: 30px;
}

.service-card:hover .service-icon {
    background: var(--primary);
    transform: scale(1.05);
}

.service-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--kakao-black);
}

.service-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.service-features li {
    font-size: 13px;
    color: var(--text-secondary);
    padding-left: 20px;
    position: relative;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: 700;
    font-size: 12px;
}

/* === Process Section === */
.process {
    padding: var(--space-4xl) 0;
    background: var(--bg-section);
}

.process-timeline {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 40px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary);
    opacity: 0.3;
}

.process-step {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
    position: relative;
}

.process-step:last-child {
    margin-bottom: 0;
}

.step-number {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: var(--kakao-black);
    font-size: 24px;
    font-weight: 800;
    border-radius: 50%;
    box-shadow: var(--shadow-yellow);
    position: relative;
    z-index: 2;
}

.step-content {
    padding-top: 16px;
}

.step-content h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--kakao-black);
    margin-bottom: 6px;
}

.step-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* === Case Study Section === */
.case-study {
    padding: var(--space-4xl) 0;
    background: var(--bg-white);
}

.case-card {
    background: var(--bg-white);
    border: 2px solid var(--primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.case-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: var(--space-2xl);
    background: linear-gradient(135deg, var(--primary-lighter) 0%, var(--primary-light) 100%);
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.case-year {
    display: inline-block;
    padding: 4px 14px;
    background: var(--primary);
    color: var(--kakao-black);
    font-size: 13px;
    font-weight: 700;
    border-radius: var(--radius-full);
    margin-bottom: 8px;
}

.case-name {
    font-size: 28px;
    font-weight: 800;
    color: var(--kakao-black);
    margin-bottom: 4px;
}

.case-subtitle {
    font-size: 15px;
    color: var(--text-secondary);
    font-style: italic;
}

.case-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.meta-icon {
    font-size: 16px;
}

.case-results {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--gray-200);
    border-top: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
}

.result-card {
    text-align: center;
    padding: var(--space-xl);
    background: var(--bg-white);
}

.result-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--kakao-black);
    line-height: 1;
    margin-bottom: 6px;
}

.result-label {
    font-size: 13px;
    color: var(--text-muted);
}

.case-services-used {
    padding: var(--space-xl) var(--space-2xl);
}

.case-services-used h4 {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
    font-weight: 600;
}

.used-services {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.used-tag {
    padding: 6px 14px;
    background: var(--primary-lighter);
    border: 1px solid var(--primary);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 500;
    color: var(--kakao-black);
}

/* === Stats Section === */
.stats {
    padding: var(--space-4xl) 0;
    background: var(--kakao-black);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.stat-item {
    text-align: center;
    padding: var(--space-xl);
}

.stat-number {
    font-size: 52px;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 15px;
    color: var(--gray-400);
    font-weight: 500;
}

/* === Why Us Section === */
.why-us {
    padding: var(--space-4xl) 0;
    background: var(--bg-section);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-lg);
}

.why-card {
    padding: var(--space-xl);
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    text-align: center;
    transition: var(--transition);
}

.why-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.why-icon {
    font-size: 40px;
    margin-bottom: var(--space-md);
}

.why-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--kakao-black);
}

.why-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* === Contact Section === */
.contact {
    padding: var(--space-4xl) 0;
    background: var(--bg-white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.contact-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--kakao-black);
    line-height: 1.3;
    margin-bottom: var(--space-md);
}

.contact-desc {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

.contact-channels {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.channel {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--primary-lighter);
    border-radius: var(--radius-md);
}

.channel-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.channel strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--kakao-black);
    margin-bottom: 2px;
}

.channel p {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Contact Form */
.contact-form {
    background: var(--gray-50);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.required {
    color: var(--accent);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-family: var(--font-family);
    transition: var(--transition-fast);
    background: var(--bg-white);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(254,229,0,0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.contact-form .btn {
    margin-top: var(--space-sm);
}

/* === Footer === */
.footer {
    background: var(--bg-dark);
    color: var(--gray-400);
    padding-top: var(--space-3xl);
}

.footer-top {
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    gap: var(--space-3xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .nav-logo {
    font-size: 20px;
    color: var(--text-white);
    margin-bottom: var(--space-md);
    display: inline-flex;
}

.footer-tagline {
    font-size: 14px;
    color: var(--gray-400);
    margin-bottom: var(--space-sm);
    margin-top: var(--space-md);
}

.footer-desc-text {
    font-size: 13px;
    color: var(--gray-500);
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: var(--space-md);
}

.footer-col li {
    margin-bottom: 8px;
}

.footer-col a {
    font-size: 13px;
    color: var(--gray-500);
}

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

.footer-bottom {
    padding: var(--space-lg) 0;
    text-align: center;
    font-size: 13px;
    color: var(--gray-600);
}

/* === Animations === */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos="fade-up"].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

[data-aos="fade-right"] {
    transform: translateX(-30px);
}

[data-aos="fade-right"].aos-animate {
    opacity: 1;
    transform: translateX(0);
}

[data-aos="fade-left"] {
    transform: translateX(30px);
}

[data-aos="fade-left"].aos-animate {
    opacity: 1;
    transform: translateX(0);
}

[data-aos="zoom-in"] {
    transform: scale(0.9);
}

[data-aos="zoom-in"].aos-animate {
    opacity: 1;
    transform: scale(1);
}

/* === Responsive === */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .footer-top {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: var(--space-lg);
        gap: 4px;
        border-bottom: 1px solid var(--gray-200);
        box-shadow: var(--shadow-lg);
        transform: translateY(-120%);
        transition: var(--transition);
        opacity: 0;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }

    .nav-toggle {
        display: flex;
    }

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

    .hero-title {
        font-size: 32px;
    }

    .hero-desc {
        font-size: 16px;
    }

    .hero-trust {
        flex-direction: column;
        gap: var(--space-md);
    }

    .trust-divider {
        width: 40px;
        height: 1px;
    }

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

    .process-timeline::before {
        left: 28px;
    }

    .step-number {
        width: 56px;
        height: 56px;
        font-size: 18px;
    }

    .case-header {
        flex-direction: column;
        padding: var(--space-xl);
    }

    .case-name {
        font-size: 22px;
    }

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

    .case-services-used {
        padding: var(--space-lg);
    }

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

    .stat-number {
        font-size: 36px;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

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

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

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

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }

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

    .hero-actions .btn {
        width: 100%;
        max-width: 300px;
    }

    .case-results {
        grid-template-columns: 1fr 1fr;
    }

    .result-number {
        font-size: 28px;
    }

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

    .stat-number {
        font-size: 32px;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}

/* === Scroll animations trigger === */
.service-card,
.process-step,
.why-card,
.stat-item {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.service-card.visible,
.process-step.visible,
.why-card.visible,
.stat-item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger animation delays */
.service-card:nth-child(1) { transition-delay: 0s; }
.service-card:nth-child(2) { transition-delay: 0.1s; }
.service-card:nth-child(3) { transition-delay: 0.2s; }
.service-card:nth-child(4) { transition-delay: 0.3s; }
.service-card:nth-child(5) { transition-delay: 0.4s; }
.service-card:nth-child(6) { transition-delay: 0.5s; }
.service-card:nth-child(7) { transition-delay: 0.6s; }

.process-step:nth-child(1) { transition-delay: 0s; }
.process-step:nth-child(2) { transition-delay: 0.15s; }
.process-step:nth-child(3) { transition-delay: 0.3s; }
.process-step:nth-child(4) { transition-delay: 0.45s; }

.why-card:nth-child(1) { transition-delay: 0s; }
.why-card:nth-child(2) { transition-delay: 0.1s; }
.why-card:nth-child(3) { transition-delay: 0.2s; }
.why-card:nth-child(4) { transition-delay: 0.3s; }

.stat-item:nth-child(1) { transition-delay: 0s; }
.stat-item:nth-child(2) { transition-delay: 0.1s; }
.stat-item:nth-child(3) { transition-delay: 0.2s; }
.stat-item:nth-child(4) { transition-delay: 0.3s; }

/* === Form Success State === */
.form-success {
    text-align: center;
    padding: var(--space-2xl);
}

.form-success-icon {
    font-size: 48px;
    margin-bottom: var(--space-md);
}

.form-success h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--kakao-black);
    margin-bottom: 8px;
}

.form-success p {
    font-size: 15px;
    color: var(--text-secondary);
}