/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #00d4ff;
    --secondary-color: #0066ff;
    --dark-bg: #0a1628;
    --darker-bg: #050d1a;
    --light-bg: #ffffff;
    --text-dark: #1a1a1a;
    --text-light: #ffffff;
    --text-gray: #6b7280;
    --accent-gradient: linear-gradient(115deg, #00DC96 -0.04%, #33B6F6 50.1%, #596CFF 100.25%);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
    overflow-y: auto;
}

@media (min-width: 1024px) {
    html, body {
        margin: 0;
        padding: 0;
        overflow-y: auto;
    }
    
    .section-page {
        height: 100vh;
        width: 100%;
        overflow: hidden;
        position: relative;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .footer {
        height: auto;
        min-height: 200px;
    }
}

.section-page {
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    width: 100%;
}

/* Header Styles */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
    transition: transform 0.3s ease, background 0.3s ease;
    transform: translateY(0);
}

.main-header.hidden {
    transform: translateY(-100%);
}

.main-header.scrolled {
    background: rgba(10, 22, 40, 0.98);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 2rem;
    max-width: 1600px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: 0.5px;
    cursor: pointer;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-menu a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--text-light);
    border: none;
    padding: 0.7rem 1.8rem;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.5);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-light);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    background: #000814;
    background-image: url('img/hero.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    text-align: center;
    padding-top: 5vh;
    align-items: flex-start;
    padding-bottom: 10vh;
}

.hero-content {
    margin-top: 10vh;
}

.hero-main-title {
    font-size: 3.5rem;
    font-weight: 500;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.4;
    letter-spacing: -0.5px;
    opacity: 0;
    animation: fadeInUp 1.2s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.hero-brand {
    display: block;
    font-size: 4.5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: 1rem;
}

.hero-description {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    opacity: 0;
    animation: fadeInUp 1.2s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-arrow {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 15px;
    position: relative;
}

.scroll-arrow::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 50%;
    animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
    0%, 100% { top: 10px; opacity: 1; }
    50% { top: 25px; opacity: 0.3; }
}

/* Animation Base Classes */
.reveal {
    opacity: 0;
    transition: all 1s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: opacity;
}

.reveal.active {
    opacity: 1;
}

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

/* Why Dashopti Section */
.why-section {
    background: var(--light-bg);
}

.why-section .container {
    display: grid;
    grid-template-columns: 1fr 2.5fr;
    gap: 80px;
    align-items: self-start;
    max-width: 1600px;
}
.why-content {padding-top:15vh;}
.why-label {
    font-size: 0.9rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.section-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 2rem;
    line-height: 1.2;
}

.why-description {
    font-size: 1.2rem;
    color: var(--text-gray);
    line-height: 1.8;
}

.highlight-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.why-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    position: relative;
    padding: 2rem;
}

.visual-container {
    position: relative;
    width: 100%;
    max-width: 650px; /* 크기 소폭 축소하여 100vh 내에 더 잘 들어오게 함 */
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
    max-height: 75vh; /* 화면 높이에 맞춰 자동 축소 */
}

.visual-circle-bg {
    position: absolute;
    width: 90%;
    height: 90%;
    z-index: 1;
    opacity: 0.6;
    object-fit: contain;
}

.center-logo {
    position: relative;
    width: 25%;
    z-index: 10;
    transition: transform 0.3s ease;
}

.center-logo img {
    width: 100%;
    height: auto;
}

.floating-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 25%;
    z-index: 20;
    /* 중앙에서 특정 각도만큼 회전 후 밖으로 밀어냄 */
    transform: translate(-50%, -50%) rotate(var(--angle)) translateY(-155%) rotate(calc(-1 * var(--angle)));
}

.icon-inner {
    width: 100%;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    animation: floatIcon 4s ease-in-out infinite;
    animation-delay: var(--delay);
}

.icon-inner img {
    width: 100%;
    height: auto;
    display: block;
    filter: drop-shadow(0 5px 15px rgba(0, 0, 0, 0.08));
}

/* 호버 시 효과: 커지고 푸른 광채 */
.icon-inner:hover {
    transform: scale(1.15) !important;
    filter: drop-shadow(0 15px 30px rgba(0, 212, 255, 0.5));
}

@keyframes floatIcon {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* Flow Chart Section */
.flow-section {
    background: url('img/area.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    position: relative;
    color: var(--text-light);
}

.flow-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(10, 22, 40, 0.3) 0%, rgba(13, 27, 46, 0.3) 100%);
    z-index: 0;
}

.flow-section .container {
    position: relative;
    z-index: 1;
}

.section-title-center {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.section-description {
    text-align: center;
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 900px;
    margin: 0 auto 4rem;
    line-height: 1.8;
}

.flow-cards-container {
    display: flex;
    justify-content: center;
    align-items: stretch;
    gap: 1.5rem;
    width: 100%;
}

.flow-card {
    flex: 1;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 25px;
    padding: 2.5rem 2rem;
    min-height: 320px;
    transition: all 0.4s ease;
}

.flow-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 212, 255, 0.25);
    background: rgba(255, 255, 255, 0.05);
}

.flow-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.flow-card-number {
    font-size: 1.2rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.4);
}

.flow-card-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-light);
    margin: 0;
}

.flow-card-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.flow-card-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.flow-item-text {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    flex: 1;
}

.flow-item-text strong {
    font-size: 1rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
}

.flow-item-text span {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
}

.flow-item-icon {
    width: 60px;
    height: 60px;
    object-fit: contain;
    opacity: 1;
    flex-shrink: 0;
}

.flow-arrow-separator {
    color: rgba(255, 255, 255, 0.15);
    width: 32px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.flow-arrow-separator svg {
    width: 100%;
    height: auto;
}

/* Key Features Section */
.features-section {
    background: #f9fafb;
    padding: 80px 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

@media (min-width: 1024px) {
    .features-section {
        height: 100vh !important;
        min-height: 100vh !important;
        max-height: 100vh !important;
        overflow: hidden;
    }
}

.section-title-features {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 2rem;
}

.feature-tabs {
    display: flex;
    gap: 10px;
    
    margin-bottom: 3rem;
    justify-content: flex-start;
}

.tab-btn {
    padding: 1rem 2rem;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    font-weight: 600;
    font-size: 1rem;
    color: #9ca3af;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    position: relative;
}

.tab-btn:hover {
    color: var(--text-dark);
}

.tab-btn.active {
    color: var(--text-dark);
    border-bottom-color: transparent;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent-gradient);
    border-radius: 2px;
}

.feature-content {
    display: none !important;
}

.feature-content.active {
    display: block !important;
}

.feature-showcase-box {
    background-image: url('img/tab.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    border-radius: 25px;
    padding: 3rem 4rem;
    min-height: 580px; /* 모든 탭의 높이를 유사하게 고정 */
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.feature-showcase-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(10, 22, 40, 0.3) 0%, rgba(13, 27, 46, 0.3) 100%);
    z-index: 0;
}

.feature-showcase-box > * {
    position: relative;
    z-index: 1;
}

.feature-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.feature-number {
    font-size: 1rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.5);
}

.feature-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-light);
    margin: 0;
}

.feature-subtitle {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 3rem;
}
.feature-subtitle2 {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    
}
/* Feature Grid Layout */
.feature-grid,
.feature-grid-4col {
    display: flex;
    align-items: center;
    justify-content: flex-start; /* 왼쪽 정렬 */
    gap: 0;
    max-width: 1400px;
    margin: 0; /* 왼쪽 정렬을 위해 auto 제거 */
}

.feature-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    width: 300px; /* 고정 너비로 균형 잡기 */
    min-height: 340px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    transition: all 0.3s ease;
    position: relative;
    backdrop-filter: blur(10px);
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.feature-item h4 {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.5;
    margin: 0;
    text-align: left;
    word-break: keep-all;
}

.feature-icon {
    width: 54px;
    height: 54px;
    margin-top: auto;
    align-self: flex-end;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0.9;
}

/* Connector Line with Dot */
.feature-connector-line,
.feature-arrow {
    width: 80px; /* 카드 사이 간격을 조금 더 넓힘 */
    height: 2px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-connector-line::before,
.feature-arrow::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 1px;
    background-image: {#fff}
    
}

.feature-connector-line::after,
.feature-arrow::after {
    content: '';
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: #ffffff;
    left: -4px; /* 커넥터 시작 지점(왼쪽 카드 끝) */
    box-shadow: 80px 0 0 0 #ffffff; /* 커넥터 끝 지점(오른쪽 카드 시작) */
    
    z-index: 2;
}

.feature-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 20px;
    padding: 2.2rem 1.8rem;
    width: 320px;
    min-height: 360px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    transition: all 0.3s ease;
    position: relative;
    backdrop-filter: blur(15px);
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
}

.feature-item h4 {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.6;
    margin-bottom: auto;
    text-align: left;
    padding-top: 1rem;
}

.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    align-self: flex-end;
    margin-top: auto;
    padding-bottom: 0.5rem;
}

.feature-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0.8;
}

.feature-item-empty {
    min-height: 280px;
    background: transparent;
}

.feature-connector-line {
    width: 80px;
    height: 2px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-connector-line::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background-image: repeating-linear-gradient(
        to right,
        rgba(255, 255, 255, 0.4) 0px,
        rgba(255, 255, 255, 0.4) 4px,
        transparent 4px,
        transparent 8px
    );
}

.feature-connector-line::after {
    content: '';
    position: absolute;
    left: 0%;
    transform: translateX(-50%);
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #fff;
    
    z-index: 1;
}

.feature-arrow {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.3);
    font-weight: 300;
    position: relative;
    width: 60px;
    height: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-arrow::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background-image: repeating-linear-gradient(
        to right,
        rgba(255, 255, 255, 0.3) 0px,
        rgba(255, 255, 255, 0.3) 4px,
        transparent 4px,
        transparent 8px
    );
}

.feature-arrow::after {
    content: '→';
    position: absolute;
    right: -8px;
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.3);
}

/* Feature Grid for Tab 4 (4 items) */
.feature-grid-4 {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
    gap: 1.5rem;
    align-items: center;
    max-width: 1300px;
    margin: 0 auto;
}

.feature-item-4 {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 2.5rem 1.5rem;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.3s ease;
    position: relative;
}

.feature-item-4:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
}

.feature-item-4 h4 {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.6;
    margin-bottom: auto;
    text-align: left;
    padding-top: 1rem;
}

.feature-item-4 .feature-icon {
    width: 60px;
    height: 60px;
    margin-top: auto;
    padding-bottom: 0.5rem;
}

.feature-item-4 .feature-icon img {
    opacity: 0.8;
}

.feature-connector {
    width: 80px;
    height: 2px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-connector::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background-image: repeating-linear-gradient(
        to right,
        rgba(255, 255, 255, 0.3) 0px,
        rgba(255, 255, 255, 0.3) 4px,
        transparent 4px,
        transparent 8px
    );
}

.feature-connector::after {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.6);
    z-index: 1;
}

/* Contact Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: #ffffff;
    border-radius: 30px;
    padding: 50px;
    max-width: 720px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease-out;
    z-index: 10000;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2.5rem;
    color: var(--text-dark);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

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

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.checkbox-group {
    flex-direction: row;
    align-items: center;
    gap: 0.7rem;
}

.checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.checkbox-group label {
    font-size: 0.9rem;
    color: var(--text-gray);
    cursor: pointer;
}

.form-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.btn-cancel,
.btn-submit {
    flex: 1;
    padding: 1rem 2rem;
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-cancel {
    background: #f3f4f6;
    color: var(--text-dark);
}

.btn-cancel:hover {
    background: #e5e7eb;
}

.btn-submit {
    background: var(--accent-gradient);
    color: var(--text-light);
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.5);
}

/* Contact Section - REMOVED */

/* Footer */
.footer {
    background: var(--darker-bg);
    padding: 4rem 20px;
    text-align: center;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.footer-text {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }
    
    .why-section .container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .why-image {
        max-width: 600px;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .feature-grid-3 {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .hero-main-title {
        font-size: 2.8rem;
    }
    
    .hero-brand {
        font-size: 3.8rem;
    }    .why-content {padding-top:0px}

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

@media (max-width: 768px) {
    .container {
        padding: 80px 20px;
    }
    .why-content {padding-top:0px}
    /* Header */
    .nav-menu {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(10, 22, 40, 0.98);
        backdrop-filter: blur(15px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2.5rem;
        z-index: 999;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu li {
        opacity: 0;
        transform: translateY(20px);
    }

    .nav-menu.active li {
        animation: fadeInUp 0.5s ease forwards;
    }

    .nav-menu.active li:nth-child(1) { animation-delay: 0.1s; }
    .nav-menu.active li:nth-child(2) { animation-delay: 0.2s; }
    .nav-menu.active li:nth-child(3) { animation-delay: 0.3s; }

    .nav-menu.active a {
        font-size: 1.5rem;
    }

    .why-description {
        font-size: 1rem;
    }

    .hamburger {
        display: flex;
        position: relative;
        z-index: 1001;
    }

    .hamburger.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .btn-primary {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    /* Hero */
    .hero {
        padding-top: 10vh;
        background-image: url('img/m_hero.jpg');
        background-position: bottom center;
        background-attachment: scroll;
    }

    .hero-main-title br {
        display: none;
    }
    
    .hero-description br {
        display: none;
    }

    .hero-main-title,
    .hero-description,
    .section-title,
    .section-title-center,
    .why-description,
    .section-description,
    .feature-subtitle,
    .feature-item h4 {
        word-break: keep-all;
        overflow-wrap: break-word;
    }
    
    .hero-content {
        margin-top: 5vh;
    }
    
    .hero-main-title {
        font-size: 2rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-brand {
        font-size: 2.8rem;
    }
    
    .hero-description {
        font-size: 0.95rem;
        padding: 0 15px;
    }
    
    /* Sections */
    .section-title {
        font-size: 2.2rem;
    }
    
    .section-title br,
    .why-description br,
    .section-description br,
    .feature-subtitle br {
        display: none;
    }

    .section-title-center {
        font-size: 2rem;
    }
    
    .why-content {padding-top:0px}

    .visual-container {
        max-width: 500px;
    }

    .floating-icon {
        width: 30%;
        transform: translate(-50%, -50%) rotate(var(--angle)) translateY(-130%) rotate(calc(-1 * var(--angle)));
    }
    .flow-cards-container {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }
    
    .flow-card {
        width: 100%;
        max-width: 400px;
        padding: 2rem;
    }
    
    .flow-arrow-separator {
        transform: rotate(90deg);
        margin: 10px 0;
        width: 40px;
        height: 40px;
    }
    
    /* Features Section */
    .section-title-features {
        font-size: 2.2rem;
    }

    .feature-tabs {
        flex-wrap: nowrap;
        gap: 15px;
        justify-content: flex-start;
        margin-bottom: 2.5rem;
        overflow-x: auto;
        padding: 0 5px 15px 5px;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none; /* Firefox */
    }

    .feature-tabs::-webkit-scrollbar {
        display: none; /* Chrome, Safari, Opera */
    }
    
    .tab-btn {
        padding: 0.8rem 1.2rem;
        font-size: 0.9rem;
        flex: none;
        width: auto;
        min-width: 120px;
        text-align: center;
        white-space: nowrap;
    }
    
    .feature-showcase-box {
        padding: 2rem 1.5rem;
        min-height: auto;
    }
    
    .feature-grid,
    .feature-grid-4col {
        flex-direction: column;
        align-items: center;
        justify-content: left;
        width: 100%;
        margin: 0 auto;
    }
    
    .feature-item {
        width: 100%;
        max-width: 350px;
        min-height: 260px;
        padding: 2rem 1.5rem;
    }
    
    .feature-connector-line,
    .feature-arrow {
        width: 2px;
        height: 50px;
        margin: 10px auto;
        justify-content: center;
    }
    
    .feature-connector-line::before,
    .feature-arrow::before {
        width: 1px;
        height: 100%;
        background-image: repeating-linear-gradient(
            to bottom,
            rgba(255, 255, 255, 0.4) 0px,
            rgba(255, 255, 255, 0.4) 4px,
            transparent 4px,
            transparent 8px
        );
    }
    
    .feature-connector-line::after,
    .feature-arrow::after {
        width: 8px;
        height: 8px;
        left: 50%;
        top: -4px; /* 커넥터 시작 지점(위쪽 카드 끝) */
        transform: translateX(-50%);
        background: #ffffff;
        box-shadow: 0 50px 0 0 #ffffff; /* 커넥터 끝 지점(아래쪽 카드 시작) */
        background-image: none;
    }
    
    .feature-item-empty {
        display: none;
    }
    
    .feature-grid-4 {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .feature-connector {
        width: 2px;
        height: 60px;
        margin: 0 auto;
    }
    
    .feature-connector::before {
        width: 2px;
        height: 100%;
        background-image: repeating-linear-gradient(
            to bottom,
            rgba(255, 255, 255, 0.3) 0px,
            rgba(255, 255, 255, 0.3) 4px,
            transparent 4px,
            transparent 8px
        );
    }
    
    .feature-connector::after {
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
    
    .feature-item,
    .feature-item-4 {
        min-height: 220px;
        padding: 2rem 1.5rem;
    }
    
    .feature-item h4,
    .feature-item-4 h4 {
        font-size: 0.95rem;
    }
    
    .feature-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .feature-title {
        font-size: 1.4rem;
    }
    
    .feature-subtitle {
        font-size: 0.9rem;
        margin-bottom: 2rem;
    }
    
    /* Modal */
    .modal-content {
        padding: 30px;
        width: 95%;
    }
    
    .modal-title {
        font-size: 2rem;
        margin-bottom: 2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    /* Hero */
    .hero {
        padding-top: 12vh;
    }
    
    .hero-content {
        margin-top: 3vh;
    }
    
    .hero-main-title {
        font-size: 1.6rem;
        margin-bottom: 1rem;
    }
    
    .hero-brand {
        font-size: 2.2rem;
    }
    
    .hero-description {
        font-size: 0.85rem;
        padding: 0 10px;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .section-title-features {
        font-size: 1.8rem;
    }
    
    .section-title-center {
        font-size: 1.8rem;
    }
    
    .tab-btn {
        padding: 0.6rem 1rem;
        font-size: 0.8rem;
        min-width: 110px;
    }
    
    .feature-showcase-box {
        padding: 1.5rem;
    }
    
    .feature-item,
    .feature-item-4 {
        min-height: 200px;
        padding: 1.5rem 1rem;
    }
    
    .feature-item h4,
    .feature-item-4 h4 {
        font-size: 0.9rem;
    }
    
    .feature-title {
        font-size: 1.2rem;
    }
    
    .feature-subtitle {
        font-size: 0.85rem;
    }
    
    .flow-card {
        padding: 1.5rem;
    }
    
    /* Modal */
    .modal-content {
        padding: 20px;
    }
    
    .modal-title {
        font-size: 1.6rem;
    }
    
    .form-buttons {
        flex-direction: column;
    }
}

/* Key Features Split Layout */
.feature-showcase-box.split-layout {
    display: flex;
    flex-direction: column;
    padding: 2.5rem 3rem !important; /* 패딩 감소 */
    justify-content: center; /* 세로 중앙 정렬로 높이 균형 유지 */
}

.feature-header-group {
    margin-bottom: 1.5rem; /* 간격 감소 */
}

.feature-split-container {
    display: flex;
    gap: 30px; /* 간격 감소 */
    align-items: stretch;
    width: 100%;
    flex-grow: 1; /* 남은 공간 채우기 */
}

.feature-visual-left {
    flex: 1.1; /* 비율 소폭 조정 */
    background: rgba(0, 0, 0, 0.15);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.feature-main-img {
    width: 100%;
    height: auto;
    max-height: 350px; /* 너무 커지지 않게 조정 */
    object-fit: contain;
}

.feature-list-right {
    flex: 1.2; /* 텍스트 한 줄 처리를 위해 가로폭 확보 */
    display: flex;
    flex-direction: column;
    gap: 10px; /* 아이템 간격 감소 */
}

.feature-row-item {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 15px 25px; /* 패딩 감소 */
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    flex: 1;
}

.feature-row-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateX(10px);
    border-color: rgba(0, 212, 255, 0.3);
}

.row-text h4 {
    color: rgba(255, 255, 255, 0.95);
    font-size: 0.95rem; /* 글씨 크기 소폭 감소 */
    font-weight: 500;
    line-height: 1.2;
    margin: 0;
    text-align: left;
    white-space: nowrap; /* 한 줄 처리 */
}

.row-icon {
    width: 42px; /* 아이콘 크기 소폭 감소 */
    height: 42px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-left: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.row-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0.9;
}

@media (max-width: 1024px) {
    .feature-split-container {
        flex-direction: column;
        gap: 20px;
    }
    .feature-visual-left {
        min-height: 250px;
        padding: 15px;
    }
    .feature-main-img {
        max-height: 280px;
    }
    .row-text h4 {
        white-space: normal; /* 모바일에서는 줄바꿈 허용 */
        font-size: 0.9rem;
    }
    .feature-row-item {
        padding: 12px 20px;
    }
}

/* Tab 3: Triple Block Layout (4:2:4) */
.feature-triple-container {
    display: flex;
    align-items: stretch; /* 아이템들의 높이를 동일하게 맞춤 */
    gap: 15px;
    width: 100%;
    margin-top: 1rem;
    flex-grow: 1; /* 남은 공간 채우기 */
}

.feature-block {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    height: 100%; /* 부모 컨테이너 내에서 동일한 높이를 갖도록 설정 */
}

.feature-block:hover {
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-5px);
    border-color: rgba(0, 212, 255, 0.3);
}

.feature-block.wide {
    flex: 3.5;
}

.feature-block.narrow {
    flex: 3;
}

.feature-block.equal {
    flex: 1; /* 3.3:3.3:3.3 비율과 동일 */
}

.block-image-area {
    width: 100%;
    height: 200px; /* 고정 높이 설정으로 이미지 영역 통일 */
    background: rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.block-image-area img {
    max-width: 100%;
    max-height: 100%; /* 이미지 영역 내에서 꽉 차도록 조절 */
    height: auto;
    object-fit: contain;
}

.block-info-area {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-grow: 1;
}

.block-info-area h4 {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    line-height: 1.5;
    margin: 0;
    word-break: keep-all;
    text-align: left;
}

.block-icon-small {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
}

.block-icon-small img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    opacity: 0.7;
}

.block-arrow {
    width: 50px;
    height: 1px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    align-self: center;
    background-image: linear-gradient(to right, rgba(255, 255, 255, 0.4) 50%, transparent 50%);
    background-size: 8px 1px;
    background-repeat: repeat-x;
}

.block-arrow::before,
.block-arrow::after {
    content: '';
    position: absolute;
    width: 6px;
    height: 6px;
    background: #fff;
    border-radius: 50%;
    top: 50%;
    transform: translateY(-50%);
}

.block-arrow::before {
    left: -3px;
}

.block-arrow::after {
    right: -3px;
}

@media (max-width: 1024px) {
    .feature-triple-container {
        flex-direction: column;
        align-items: center;
    }
    .feature-block.wide, 
    .feature-block.narrow,
    .feature-block.equal {
        flex: none;
        width: 100%;
        max-width: 450px; /* 모바일에서 너무 넓어지지 않게 조정 */
    }
    .block-image-area {
        height: 160px; /* 모바일에서 이미지 영역 축소 */
    }
    .block-info-area {
        padding: 15px;
    }
    .block-arrow {
        width: 1px;
        height: 40px;
        background-image: linear-gradient(to bottom, rgba(255, 255, 255, 0.4) 50%, transparent 50%);
        background-size: 1px 8px;
        background-repeat: repeat-y;
        margin: 10px 0;
    }
    .block-arrow::before {
        top: -3px;
        left: 50%;
        transform: translateX(-50%);
    }
    .block-arrow::after {
        bottom: -3px;
        top: auto;
        left: 50%;
        transform: translateX(-50%);
    }
}