/* =========================================
   1. BASE & VARIABLES
   ========================================= */
:root {
    --primary-color: #0f172a;
    /* 짙은 네이비 (메인) */
    --secondary-color: #1e293b;
    /* 서브 네이비 */
    --accent-color: #2563eb;
    /* 선명한 블루 (포인트) */
    --accent-hover: #1d4ed8;
    /* 호버 시 더 짙은 블루 */
    --text-main: #111827;
    /* 진한 검정 (본문) */
    --text-sub: #4b5563;
    /* 회색 (보조 텍스트) */
    --bg-light: #f8fafc;
    /* 밝은 회색 배경 */
    --white: #ffffff;

    --header-height: 80px;
    --container-width: 1200px;
    --radius-md: 16px;
    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
    color: var(--text-main);
    line-height: 1.7;
    overflow-x: hidden;
    word-break: keep-all;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* =========================================
   2. UI COMPONENTS
   ========================================= */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 700;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--white);
    border: 1px solid var(--accent-color);
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    transform: translateY(-2px);
}

.btn-nav-cta {
    background: var(--primary-color);
    color: var(--white) !important;
    padding: 10px 24px;
    border-radius: 6px;
    font-size: 0.95rem;
}

.btn-nav-cta:hover {
    background: var(--accent-color);
}

/* =========================================
   [NEW] Install Center
   ========================================= */
.btn-nav-install {
    border: 1px solid var(--accent-color);
    color: var(--accent-color) !important;
    padding: 10px 18px;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 700;
    background: transparent;
}

.btn-nav-install:hover {
    background: rgba(37, 99, 235, 0.08);
}

.install-hero {
    padding: 140px 0 40px;
    background: radial-gradient(1200px 600px at 20% 10%, rgba(37, 99, 235, 0.10), transparent 60%),
        radial-gradient(900px 500px at 80% 30%, rgba(15, 23, 42, 0.06), transparent 55%),
        var(--bg-light);
}

.install-hero h1 {
    font-size: 2.2rem;
    line-height: 1.2;
    letter-spacing: -0.6px;
    margin-bottom: 10px;
}

.install-hero p {
    color: var(--text-sub);
    max-width: 720px;
}

.install-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-top: 22px;
}

.install-card {
    background: var(--white);
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-md);
    padding: 22px;
    box-shadow: var(--shadow-soft);
}

.install-card h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
}

.install-meta {
    font-size: 0.95rem;
    color: var(--text-sub);
    margin-bottom: 14px;
}

.install-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.btn-secondary {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 700;
    border: 1px solid #cbd5e1;
    background: #fff;
}

.btn-secondary:hover {
    background: #f8fafc;
    transform: translateY(-2px);
}

.install-note {
    margin-top: 18px;
    padding: 14px;
    border-radius: 12px;
    border: 1px dashed #cbd5e1;
    background: rgba(255, 255, 255, 0.65);
    color: #475569;
    font-size: 0.95rem;
}

@media (max-width: 900px) {
    .install-grid {
        grid-template-columns: 1fr;
    }
}

/* Card */
.card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    border: 1px solid #e2e8f0;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.card-img img {
    width: 100%;
    height: auto;
    aspect-ratio: 1 / 1;
    object-fit: contain;
    background-color: #fff;
    display: block;
    border-bottom: 1px solid #e2e8f0;
}

.card-text {
    padding: 32px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-text h3 {
    margin-bottom: 12px;
    font-size: 1.35rem;
    font-weight: 700;
}

.btn-more {
    margin-top: auto;
    color: var(--accent-color);
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

/* =========================================
   3. LAYOUT MODULES (Header & Nav)
   ========================================= */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 50px;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
}

.header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    height: 70px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 8px;

    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.logo-text {
    position: relative;
    top: 1px;
}

.logo img {
    height: 128px;
    width: auto;
    object-fit: contain;
    margin-left: -60px;
    /* 좌측 간격 */
    margin-right: -40px;
    /* 우측 간격 */
    margin-top: 4px;
}

.nav {
    display: flex;
    align-items: center;
}

.nav a {
    margin-left: 35px;
    font-weight: 600;
    font-size: 1rem;
    color: #334155;
}

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

/* 모바일 햄버거 버튼 (기본 숨김) */
.mobile-menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
}

/* Footer */
.footer {
    background: #111827;
    color: #94a3b8;
    padding: 80px 0 40px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-left h3 {
    color: #fff;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.footer-left p {
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.sns-icons a {
    margin-left: 20px;
    font-size: 1.3rem;
    color: #cbd5e1;
    transition: 0.3s;
}

.sns-icons a:hover {
    color: var(--white);
}

/* =========================================
   4. PAGE SPECIFIC & SECTIONS
   ========================================= */

/* Hero Section */
.hero-section {
    position: relative;
    height: 100vh;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--white);
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -2;
}

.hero-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: -1;
}

.hero-content {
    text-align: center;
    z-index: 1;
    padding: 0 20px;
    max-width: 900px;
}

.hero-content h1 {
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.1;
    letter-spacing: -1px;
}

.hero-content p {
    font-size: 1.5rem;
    opacity: 0.9;
    margin-bottom: 40px;
    font-weight: 500;
}

/* Sub Page Visual */
.sub-visual {
    height: 400px;
    background: linear-gradient(rgba(15, 23, 42, 0.7), rgba(15, 23, 42, 0.7)), url('https://images.unsplash.com/photo-1557804506-669a67965ba0?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    margin-top: var(--header-height);
    text-align: center;
    padding: 0 20px;
}

.sub-visual h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 15px;
}

.sub-visual p {
    font-size: 1.2rem;
    opacity: 0.8;
}

/* Tab Menu */
.tab-menu-sticky {
    position: sticky;
    top: 70px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(5px);
    z-index: 999;
    border-bottom: 1px solid #e2e8f0;
    width: 100%;
}

.tab-menu {
    display: flex;
    max-width: var(--container-width);
    margin: 0 auto;
}

.tab-menu a {
    flex: 1;
    text-align: center;
    padding: 20px 0;
    cursor: pointer;
    font-weight: 700;
    color: #64748b;
    border-bottom: 3px solid transparent;
    transition: 0.3s;
}

.tab-menu a:hover {
    color: var(--accent-color);
    background: #f8fafc;
}

.tab-menu a.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
    background: #fff;
}

/* Common Layouts */
.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 60px;
    font-weight: 800;
    color: var(--primary-color);
}

.business-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

/* =========================================
   [BUSINESS PAGE]
   ========================================= */
.biz-item {
    display: none;
    padding: 80px 0;
    animation: fadeIn 0.5s ease-out;
}

.biz-item.active {
    display: block;
}

.biz-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 60px;
}

.biz-header h2 {
    font-size: 1.3rem;
    color: var(--accent-color);
    font-weight: 800;
    letter-spacing: 1px;
    margin-bottom: 50px;
    text-transform: uppercase;
}

.biz-header h3 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1.3;
    margin-bottom: 20px;
}

.biz-header p {
    font-size: 1.15rem;
    color: var(--text-sub);
}

.video-section {
    margin-bottom: 120px;
}

.video-placeholder {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    aspect-ratio: 16 / 9;
    background: #0f172a;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #64748b;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
    border: 1px solid #334155;
    text-align: center;
    padding: 20px;
}

.feature-highlight-section {
    background: var(--white);
    padding: 80px;
    border-radius: 24px;
    box-shadow: var(--shadow-soft);
    margin-bottom: 100px;
}

.feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.feature-text-col h4 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 40px;
    color: var(--primary-color);
}

.feature-list-clean {
    list-style: none;
}

.feature-list-clean li {
    font-size: 1.2rem;
    color: var(--text-main);
    margin-bottom: 24px;
    padding-left: 40px;
    position: relative;
    font-weight: 600;
}

.feature-list-clean li::before {
    content: '\f00c';
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 2px;
    color: var(--white);
    background: var(--accent-color);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-img-box {
    width: 100%;
    height: 400px;
    background: #e2e8f0;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    font-weight: 600;
}

.process-section {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.process-step {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    border: 1px solid #e2e8f0;
    box-shadow: var(--shadow-soft);
    position: relative;
    transition: 0.3s;
}

.process-step:hover {
    transform: translateY(-10px);
    border-color: var(--accent-color);
}

/* 아이콘 박스를 이미지에 맞게 조정 */
.process-icon {
    width: 120px;
    /* 기존 80px에서 크기를 조금 키우는 것을 추천합니다 */
    height: 120px;
    background: #f1f5f9;
    /* 배경색은 취향에 맞게 조정 */
    border-radius: 50%;
    margin: 0 auto 25px;
    overflow: hidden;
    /* 이미지가 원 밖으로 나가지 않게 함 */
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 박스 안의 이미지 스타일 */
.process-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* 비율 유지하며 꽉 채움 */
}

.process-step h4 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.solution-card {
    background: var(--white);
    padding: 40px;
    border-radius: 16px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
    border: 1px solid #e2e8f0;
    box-shadow: var(--shadow-soft);
}

.solution-card i {
    font-size: 2.5rem;
    color: var(--accent-color);
    flex-shrink: 0;
}

.solution-info h4 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.solution-info ul {
    list-style: none;
    margin-top: 15px;
}

.solution-info li {
    margin-bottom: 8px;
    color: var(--text-sub);
    display: flex;
    align-items: center;
    gap: 8px;
}

.solution-info li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--accent-color);
    border-radius: 50%;
    flex-shrink: 0;
}

/* =========================================
   Trust Visual Section
   ========================================= */
.trust-visual-section {
    height: 500px;
    background-image: url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?auto=format&fit=crop&w=1920&q=80');
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 0 20px;
}

.trust-content-box {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.92), rgba(30, 58, 138, 0.95));
    padding: 50px 70px;
    border-radius: 24px;
    text-align: center;
    color: var(--white);
    box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.3);
    max-width: 850px;
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(5px);
}

.trust-content-box h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.trust-content-box p {
    font-size: 1.3rem;
    opacity: 0.95;
    font-weight: 500;
}

/* =========================================
   CONSULTATION SECTION
   ========================================= */
.consult-wrapper {
    background: #f0f9ff;
    padding: 120px 0;
}

.consult-container {
    background: var(--white);
    max-width: 900px;
    margin: 0 auto;
    border-radius: 24px;
    padding: 60px;
    box-shadow: 0 20px 50px rgba(37, 99, 235, 0.1);
    text-align: center;
    border: 1px solid #bfdbfe;
}

.consult-container h3 {
    font-size: 2.2rem;
    margin-bottom: 10px;
    color: var(--primary-color);
    font-weight: 800;
}

.consult-container p {
    color: var(--text-sub);
    margin-bottom: 50px;
    font-size: 1.1rem;
}

.type-selector {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.type-btn {
    flex: 1;
    max-width: 250px;
    padding: 25px;
    background: #fff;
    border: 2px solid #e2e8f0;
    border-radius: 16px;
    cursor: pointer;
    transition: 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.type-btn i {
    font-size: 2.2rem;
    color: #94a3b8;
}

.type-btn span {
    font-weight: 700;
    color: #64748b;
    font-size: 1.1rem;
}

.type-btn small {
    font-size: 0.85rem;
    color: #94a3b8;
}

.type-btn.active {
    border-color: var(--accent-color);
    background: #eff6ff;
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.1);
}

.type-btn.active i,
.type-btn.active span {
    color: var(--accent-color);
}

.symptom-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    max-width: 700px;
    margin: 0 auto 50px;
}

.symptom-item {
    background: #f8fafc;
    padding: 16px 24px;
    border-radius: 10px;
    text-align: left;
    border: 1px solid #e2e8f0;
    color: #334155;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
    display: flex;
    align-items: center;
    gap: 12px;
}

.symptom-item:hover {
    border-color: var(--accent-color);
    background: #fff;
}

.symptom-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-color);
    flex-shrink: 0;
}

.kakao-btn {
    background: #FAE100;
    color: #3c1e1e;
    padding: 18px 50px;
    border-radius: 50px;
    font-weight: 800;
    font-size: 1.2rem;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 5px 15px rgba(250, 225, 0, 0.4);
    transition: 0.3s;
    max-width: 100%;
    box-sizing: border-box;
    justify-content: center;
}

.kakao-btn:hover {
    background: #ffe923;
    transform: translateY(-3px);
}

/* Vision New */
.vision-section-new {
    padding: 140px 0;
    background-color: #fff;
}

.vision-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 80px;
}

.vision-text-col {
    flex: 1;
}

.vision-label {
    font-weight: 800;
    color: var(--accent-color);
    letter-spacing: 2px;
    margin-bottom: 20px;
    display: block;
    font-size: 0.9rem;
}

.vision-title {
    font-size: 3.5rem;
    font-weight: 900;
    color: #111;
    margin-bottom: 40px;
    line-height: 1.1;
}

.vision-desc p {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 24px;
}

.vision-desc .highlight-desc {
    color: #111;
    font-weight: 600;
    border-left: 4px solid var(--accent-color);
    padding-left: 20px;
}

.vision-img-col {
    flex: 1;
}

.vision-img-col img {
    width: 100%;
    border-radius: 30px;
    box-shadow: 20px 30px 60px rgba(0, 0, 0, 0.15);
}

/* Floating Kakao & Urgent Banner */
.kakao-chat-fixed {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: #FEE500;
    color: #3c1e1e;
    padding: 12px 24px;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.kakao-chat-fixed .kakao-icon {
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.kakao-chat-fixed .kakao-text {
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    white-space: nowrap;
}

.kakao-chat-fixed:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(254, 229, 0, 0.4);
    background-color: #ffeb3b;
}

.urgent-banner {
    background-color: #fff1f2;
    border: 1px solid #fecdd3;
    border-radius: 12px;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    margin-bottom: 40px;
    text-align: left;
}

.urgent-content {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.badge-urgent {
    background-color: #e11d48;
    color: white;
    font-size: 0.8rem;
    font-weight: 800;
    padding: 4px 8px;
    border-radius: 4px;
    flex-shrink: 0;
    animation: urgent-pulse-badge 2s infinite;
}

.urgent-content p {
    color: #881337;
    font-size: 0.95rem;
    font-weight: 500;
    margin: 0 !important;
    line-height: 1.4;
}

.btn-urgent-small {
    background-color: #e11d48;
    color: white;
    font-size: 0.9rem;
    font-weight: 700;
    padding: 10px 20px;
    border-radius: 50px;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s;
    box-shadow: 0 2px 6px rgba(225, 29, 72, 0.2);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes urgent-pulse-badge {
    0% {
        opacity: 1;
    }

    50% {
        opacity: 0.6;
    }

    100% {
        opacity: 1;
    }
}

@keyframes pulse-yellow {
    0% {
        box-shadow: 0 0 0 0 rgba(254, 229, 0, 0.7);
    }

    70% {
        box-shadow: 0 0 0 15px rgba(254, 229, 0, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(254, 229, 0, 0);
    }
}

.kakao-chat-fixed {
    animation: pulse-yellow 2s infinite;
}

/* =========================================
   [MOBILE RESPONSIVE STYLE]
   ========================================= */
@media (max-width: 992px) {

    /* 기존 그리드들을 세로 1열로 변경 */
    .grid-container,
    .feature-grid,
    .process-section,
    .solution-grid,
    .vision-wrapper {
        grid-template-columns: 1fr;
        /* 1단 배열 */
        flex-direction: column;
    }

    .hero-content h1 {
        font-size: 3rem;
    }

    .feature-img-box {
        height: 300px;
    }

    .type-selector {
        flex-direction: column;
    }

    .type-btn {
        max-width: 100%;
    }

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

    .vision-title {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
  .vision-img-col {
    overflow: visible;
  }

  .vision-diagram {
    max-width: 360px;   /* 필요하면 320~400 사이로 조절 */
    width: 100%;
    height: 360px;      /* 핵심: 모바일에서 박스 높이 확정 */
    aspect-ratio: auto; /* aspect 의존 끊기 */
  }
}
.vision-section-new {
  overflow-x: clip;
}
@media (max-width: 768px) {
    .header {
        padding: 0 20px;
    }

    /* [모바일 메뉴] 스타일 */
    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: #fff;
        flex-direction: column;
        align-items: center;
        padding: 30px 0;
        border-bottom: 1px solid #eee;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
        display: none;
        /* 기본 숨김 */
    }
    .header.scrolled .nav {
        top: 70px;
    }

    .nav.active {
        display: flex;
        animation: slideDown 0.3s ease-out;
    }

    .logo img {
        margin-left: -50px;
        margin-right: -40px;
    }

    .nav a {
        margin: 15px 0;
        font-size: 1.2rem;
        width: 100%;
        text-align: center;
    }

    .mobile-menu-toggle {
        display: block;
    }

    /* 햄버거 버튼 보이기 */

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .sub-visual h1 {
        font-size: 2.2rem;
    }

    /* Trust Box Mobile */
    .trust-visual-section {
        height: auto;
        padding: 60px 20px;
    }

    .trust-content-box {
        padding: 40px 20px;
    }

    .trust-content-box h2 {
        font-size: 2rem;
    }

    .trust-content-box p {
        font-size: 1rem;
    }

    /* Urgent Banner Mobile */
    .urgent-banner {
        flex-direction: column;
        text-align: center;
        padding: 20px;
        gap: 15px;
    }

    .urgent-content {
        flex-direction: column;
        gap: 10px;
    }

    .btn-urgent-small {
        width: 100%;
        justify-content: center;
    }

    /* Consult Section Mobile */
    .consult-container {
        padding: 40px 20px;
    }

    .consult-container h3 {
        font-size: 1.8rem;
    }

    .kakao-btn {
        width: 100%;
        font-size: 1rem;
        padding: 15px;
    }

    /* Floating Button Mobile */
    .kakao-chat-fixed {
        bottom: 20px;
        right: 20px;
        padding: 10px 18px;
    }

    .kakao-chat-fixed .kakao-text {
        font-size: 0.9rem;
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =========================================
    Mobile Forensic Process Section 
   ========================================= */
.process-section-custom {
    padding: 60px 0 100px;
    background-color: #f2f4f6;
    /* 토스풍 연그레이 배경 */
    border-radius: 40px;
    margin: 20px 0 80px;
}

.process-grid-custom {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.process-card-custom {
    background: #ffffff;
    border-radius: 28px;
    padding: 36px 28px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.process-card-custom:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
}

.step-num-custom {
    font-size: 2.8rem;
    font-weight: 900;
    color: #2563eb;
    opacity: 0.1;
    position: absolute;
    top: 25px;
    right: 25px;
}

.card-title-custom {
    font-size: 1.4rem;
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 6px;
    letter-spacing: -0.5px;
}

.card-subtitle-custom {
    font-size: 0.95rem;
    color: #8b95a1;
    font-weight: 600;
    display: block;
    margin-bottom: 30px;
}

.card-visual-custom {
    width: 100%;
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    margin-bottom: 24px;
}

.toss-icon-3d-custom {
    width: 80px;
    height: 80px;
    border-radius: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    background: linear-gradient(135deg, #4c6ef5 0%, #1e3a8a 100%);
    box-shadow: inset 2px 2px 5px rgba(255, 255, 255, 0.2), 0 15px 25px rgba(30, 58, 138, 0.2);
    z-index: 2;
    animation: floatIconCustom 3s ease-in-out infinite;
}

.bg-circle-custom {
    position: absolute;
    width: 120px;
    height: 120px;
    background: rgba(232, 240, 254, 0.6);
    border-radius: 50%;
    filter: blur(10px);
}

@keyframes floatIconCustom {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-8px);
    }
}

.phone-mockup-custom {
    width: 90px;
    height: 150px;
    background: #1a2b4b;
    border-radius: 16px;
    padding: 4px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
    z-index: 2;
}

.phone-screen-custom {
    width: 100%;
    height: 100%;
    background: #f1f3f5;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    color: #888;
}

.card-desc-custom {
    font-size: 0.95rem;
    color: #191f28;
    background: #f9fafb;
    padding: 18px;
    border-radius: 16px;
    margin-top: auto;
    border: 1px solid #f0f0f0;
}

.card-desc-custom strong {
    display: block;
    color: #25468d;
    margin-bottom: 6px;
    font-weight: 700;
}

@media (max-width: 1024px) {
    .process-grid-custom {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .process-grid-custom {
        grid-template-columns: 1fr;
    }
}

/* =========================================
   [최종] 모바일 보안 섹션 (Toss Style)
   ========================================= */

/* 1. 헤더 레이아웃: 좌우 분할 (Flex) */
.biz-new-intro {
    display: flex;
    /* 가로 배치 */
    align-items: center;
    /* 수직 중앙 정렬 */
    justify-content: space-between;
    /* 양 끝 정렬 */
    max-width: 1000px;
    /* 전체 폭 제한 */
    margin: 0 auto 80px;
    /* 가운데 정렬 및 하단 여백 */
    gap: 40px;
    /* 좌우 간격 */
    text-align: left;
    /* 텍스트 왼쪽 정렬 */
}

/* 왼쪽: 텍스트 영역 */
.biz-header-content {
    flex: 1;
    /* 공간 차지 비율 1 */
}

/* 오른쪽: 이미지 영역 */
.biz-header-img {
    flex: 1;
    /* 공간 차지 비율 1 */
    display: flex;
    justify-content: center;
    /* 이미지 중앙 정렬 */
    align-items: center;
}

/* 이미지 스타일 */
.biz-header-img img {
    width: 100%;
    max-width: 400px;
    /* 이미지 최대 너비 제한 */
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(26, 43, 75, 0.2));
    /* 그림자 */
}

/* 텍스트 스타일 */
.biz-new-sub {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-color);
    display: block;
    margin-bottom: 15px;
}

.biz-new-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 24px;
    line-height: 1.3;
    letter-spacing: -1px;
}

.biz-new-desc {
    font-size: 1.15rem;
    color: var(--text-sub);
    margin-bottom: 35px;
    line-height: 1.6;
}

.biz-new-badge {
    display: inline-block;
    background-color: rgba(37, 99, 235, 0.08);
    color: var(--accent-color);
    padding: 10px 24px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
}

/* 2. 모바일 반응형: 화면 작아지면 위아래 배치 */
@media (max-width: 992px) {
    .biz-new-intro {
        flex-direction: column-reverse;
        /* 이미지가 위, 텍스트가 아래 */
        text-align: center;
        gap: 40px;
    }

    .biz-header-img img {
        max-width: 300px;
    }
}

/* 2. 카드 섹션 레이아웃 */
.process-section-custom {
    padding: 80px 0;
    background-color: #f2f4f6;
    /* 섹션 전용 배경색 */
    margin-top: 40px;
    border-radius: 0;
}

.process-grid-custom {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

/* 3. 카드 디자인 */
.process-card-custom {
    background: var(--white);
    border-radius: 28px;
    padding: 36px 28px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(0, 0, 0, 0.03);
    overflow: hidden;
}

.process-card-custom:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
    border-color: rgba(37, 99, 235, 0.1);
}

/* 단계 숫자 */
.step-num-custom {
    font-size: 2.8rem;
    font-weight: 900;
    color: var(--accent-color);
    opacity: 0.15;
    position: absolute;
    top: 25px;
    right: 25px;
    line-height: 1;
}

/* 텍스트 영역 */
.text-area-custom {
    margin-bottom: 24px;
}

.card-title-custom {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 6px;
    letter-spacing: -0.5px;
}

.card-subtitle-custom {
    font-size: 0.95rem;
    color: var(--text-sub);
    font-weight: 600;
    display: block;
}

/* 아이콘 비주얼 */
.card-visual-custom {
    width: 100%;
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    margin-bottom: 24px;
}

/* 3D 아이콘 스타일 */
.toss-icon-3d-custom {
    width: 80px;
    height: 80px;
    border-radius: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--white);
    background: linear-gradient(135deg, #4c6ef5 0%, var(--primary-color) 100%);
    box-shadow: inset 2px 2px 5px rgba(255, 255, 255, 0.2), inset -2px -2px 5px rgba(0, 0, 0, 0.2), 0 15px 25px rgba(30, 58, 138, 0.25);
    z-index: 2;
    animation: floatIconCustom 3s ease-in-out infinite;
}

/* 아이콘 컬러 구분 */
.icon-shield {
    background: linear-gradient(135deg, #60a5fa 0%, var(--primary-color) 100%);
}

.icon-eye {
    background: linear-gradient(135deg, #3b82f6 0%, var(--secondary-color) 100%);
}

.icon-virus {
    background: linear-gradient(135deg, #93c5fd 0%, var(--accent-color) 100%);
}

.bg-circle-custom {
    position: absolute;
    width: 120px;
    height: 120px;
    background: var(--accent-color);
    opacity: 0.08;
    border-radius: 50%;
    z-index: 1;
    filter: blur(15px);
}

@keyframes floatIconCustom {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-8px);
    }
}

/* 폰 목업 */
.phone-mockup-custom {
    width: 90px;
    height: 150px;
    background: var(--primary-color);
    border-radius: 16px;
    padding: 4px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 2;
}

.phone-screen-custom {
    width: 100%;
    height: 100%;
    background: #f1f3f5;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    text-align: center;
    color: var(--text-sub);
    overflow: hidden;
}

/* 설명 박스 */
.card-desc-custom {
    font-size: 0.95rem;
    color: var(--text-main);
    background: var(--bg-light);
    padding: 18px;
    border-radius: 16px;
    margin-top: auto;
    border: 1px solid #e2e8f0;
    line-height: 1.5;
}

.card-desc-custom strong {
    display: block;
    color: var(--accent-color);
    margin-bottom: 6px;
    font-weight: 700;
}

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

    .biz-new-title {
        font-size: 2.2rem;
    }
}

@media (max-width: 768px) {
    .process-grid-custom {
        grid-template-columns: 1fr;
    }

    .process-card-custom {
        padding: 30px 24px;
        text-align: left;
    }

    .card-visual-custom {
        margin: 30px 0;
    }

    .step-num-custom {
        font-size: 2.2rem;
    }
}

/* 다운로드 버튼 비활성화 */
.disabled-style {
    pointer-events: none;
    filter: grayscale(1);
}

.tab-menu-sticky .tab-menu a {
    color: #64748b !important;
    /* 기본 회색 */
    border-bottom: 3px solid transparent !important;
    background-color: transparent !important;
    opacity: 0.8;
}

/* 2. 활성화 상태: 클릭해서 유지될 때 */
.tab-menu-sticky .tab-menu a.active {
    color: #2563eb !important;
    /* 파란색 */
    border-bottom-color: #2563eb !important;
    /* 밑줄 파란색 */
    opacity: 1 !important;
    font-weight: 800 !important;
    background-color: rgba(37, 99, 235, 0.05) !important;
    /* 클릭 시 연한 파란 배경 */
}

/* 3. 호버 상태: 마우스를 올렸을 때도 똑같이 파란색 */
.tab-menu-sticky .tab-menu a:hover {
    color: #2563eb !important;
    opacity: 1 !important;
}

/* style.css */
/* 부모 박스(회색 영역) 설정 */
/* 부모 박스의 고정 높이를 없애고 높이를 자동(auto)으로 변경 */
.feature-img-box {
    width: 100%;
    height: auto; /* 기존 400px에서 auto로 변경! (중요) */
    background: transparent; /* 꽉 채워지므로 배경색 제거 */
    border-radius: 16px;
    display: flex;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08); /* 밋밋하지 않게 그림자 추가 (선택사항) */
}

/* 이미지도 억지로 늘리지 않고 원본 비율을 유지하도록 변경 */
.feature-img-box img {
    width: 100%;
    height: auto; /* 기존 100%에서 auto로 변경! */
    display: block;
}