:root {
    --drt-bg: #f2f4f7; /* Platinum Gray - Sophisticated & Harmonious */
    --drt-accent: #234177; /* Signature Deep Blue */
    --drt-bright: #3b82f6;
    --drt-text-main: #1a1c21; /* Deep Charcoal for elegance */
    --drt-text-dim: #4b5563;
    --drt-border: rgba(35, 65, 119, 0.08);
    --drt-glass: rgba(255, 255, 255, 0.95);
}

html, body {
    margin: 0;
    padding: 0;
    background-color: var(--drt-bg);
    color: var(--drt-text-main);
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    overflow-x: hidden;
    width: 100%;
    /* Subtle Pattern for Large Screens */
    background-image: radial-gradient(rgba(35, 65, 119, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

/* Common Layout */
.section-container {
    max-width: 1400px;
    width: 90%;
    margin: 0 auto;
    padding: 100px 0;
    position: relative;
    z-index: 10;
}

/* 1. Hero Section */
#hero-section {
    height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at 50% 50%, rgba(35, 65, 119, 0.05) 0%, transparent 70%);
}

/* Floating Light Effect */
#hero-section::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(35, 65, 119, 0.08) 0%, transparent 70%);
    filter: blur(80px);
    z-index: 1;
}

.hero-content {
    text-align: center;
    z-index: 5;
}

.hero-label {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--drt-accent);
    letter-spacing: 0.4em;
    text-transform: uppercase;
    margin-bottom: 20px;
    opacity: 0;
    animation: fadeInDown 1s forwards;
}

.hero-title {
    font-size: clamp(3rem, 9vw, 6rem);
    font-weight: 950;
    line-height: 1.05;
    margin: 0;
    background: linear-gradient(135deg, var(--drt-accent) 20%, var(--drt-bright), var(--drt-accent) 80%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: logo-shimmer 6s linear infinite, fadeInUp 1.2s forwards 0.3s;
    opacity: 0;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--drt-text-main);
    margin-top: 30px;
    font-weight: 500;
    letter-spacing: 0.02em;
    opacity: 0;
    animation: fadeInUp 1.2s forwards 0.6s;
}

@keyframes logo-shimmer { to { background-position: 200% center; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-30px); } to { opacity: 1; transform: translateY(0); } }

/* 2. Identity Section */
.identity-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.identity-text {
    max-width: 720px; /* Optimal reading width for standard monitors */
}

.identity-text h2 {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 35px;
    line-height: 1.15;
    color: var(--drt-accent);
}

.identity-text h2 span { color: var(--drt-bright); }

.identity-text p {
    font-size: 1.28rem;
    line-height: 1.75;
    color: var(--drt-text-main);
    margin-bottom: 45px;
}

.identity-visual {
    position: relative;
    perspective: 1500px;
}

.visual-frame {
    width: 100%;
    height: 520px;
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    box-shadow:
        0 40px 80px -20px rgba(35, 65, 119, 0.15),
        0 0 0 1px rgba(255, 255, 255, 0.5);
    transform: rotateY(-3deg);
    transition: all 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}

.visual-frame:hover {
    transform: rotateY(0deg) scale(1.02);
    box-shadow: 0 50px 100px -25px rgba(35, 65, 119, 0.25);
}

.visual-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 1.2s ease;
}

.visual-frame:hover img {
    transform: scale(1.08);
}

.frame-glare {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
    pointer-events: none;
    z-index: 2;
}

.identity-stats {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px;
}

.stat-card {
    background: #fff;
    border: 1px solid var(--drt-border);
    padding: 35px;
    border-radius: 12px;
    transition: all 0.4s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
}

.stat-card:hover {
    border-color: var(--drt-bright);
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(35, 65, 119, 0.08);
}

.stat-num {
    font-size: 3rem;
    font-weight: 900;
    color: var(--drt-accent);
    margin-bottom: 5px;
}

.stat-label {
    font-size: 1rem;
    color: var(--drt-text-dim);
    font-weight: 700;
    text-transform: uppercase;
}

h1, h2, h3, p, span {
    word-break: keep-all; /* Prevent awkward word breaking */
}

/* Responsive Design */
@media (max-width: 1024px) {
    .section-container { padding: 80px 0; }
    .identity-grid { grid-template-columns: 1fr; gap: 50px; }
    .hero-title { font-size: 3.5rem; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2.8rem; }
    .hero-subtitle { font-size: 1.1rem; }
    .identity-text h2 { font-size: 2.2rem; }
    .stat-num { font-size: 2rem; }
}
    

    :root {
--consult-bg: #f8fafc;     /* White Gray (Cool Slate 50) for eye comfort */
--consult-accent: #234177; /* Brand Deep Blue */
--consult-bright: #3b82f6; /* Vivid Blue */
--consult-text: #1e293b;   /* Slate 800 */
--consult-sub: #64748b;    /* Slate 500 */
--consult-border: #cbd5e1; /* Slightly darker border for contrast */
    }

    #drt-consultation-section {
background: #f8fafc; /* White Gray (Solid) */
padding: 50px 20px; /* Reduced vertical size */
font-family: 'Inter', 'Noto Sans KR', sans-serif;
color: var(--consult-text);
position: relative;
overflow: hidden;
display: flex;
justify-content: center;
align-items: center;
border: none; /* Removed border for seamless blend */
    }

    /* PREMIUM GRID PATTERN (Subtle Tech Feel) */
    #drt-consultation-section::after {
content: '';
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-image:
    linear-gradient(rgba(35, 65, 119, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(35, 65, 119, 0.03) 1px, transparent 1px);
background-size: 40px 40px;
opacity: 0.6;
pointer-events: none;
z-index: 1;
    }

    .consult-container {
max-width: 1200px;
width: 100%;
display: flex;
justify-content: space-between;
align-items: center;
position: relative;
z-index: 5;
background: rgba(255, 255, 255, 0.9);
padding: 60px 70px;
border-radius: 4px; /* Slightly sharper for tech feel */
border: 1px solid rgba(255, 255, 255, 0.4);
backdrop-filter: blur(20px);
/* Premium Diffuse Shadow */
box-shadow:
    0 20px 40px -10px rgba(35, 65, 119, 0.1),
    0 0 20px rgba(255, 255, 255, 0.8) inset;
transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    /* TECH CORNER BRACKETS (New Design Element) */
    .consult-container::before,
    .consult-container::after {
content: '';
position: absolute;
width: 20px;
height: 20px;
border: 2px solid var(--consult-accent);
transition: all 0.3s ease;
opacity: 0.6;
    }

    /* Top-Left Bracket */
    .consult-container::before {
top: -1px;
left: -1px;
border-right: none;
border-bottom: none;
    }

    /* Bottom-Right Bracket */
    .consult-container::after {
bottom: -1px;
right: -1px;
border-left: none;
border-top: none;
    }

    /* Hover Effect: Brackets Expand */
    .consult-container:hover::before {
width: 30px;
height: 30px;
opacity: 1;
    }
    .consult-container:hover::after {
width: 30px;
height: 30px;
opacity: 1;
    }

    /* Hover Lift Effect for Container */
    .consult-container:hover {
transform: translateY(-2px);
box-shadow:
    0 30px 60px -12px rgba(35, 65, 119, 0.15),
    0 0 20px rgba(255, 255, 255, 0.8) inset;
    }

    /* Content Styling */
    .consult-text {
max-width: 600px;
    }

    .consult-label {
color: var(--consult-bright);
font-size: 0.85rem;
font-weight: 800;
letter-spacing: 0.15em;
text-transform: uppercase;
margin-bottom: 15px;
display: flex;
align-items: center;
gap: 10px;
    }

    /* Pulsing Dot Indicator */
    .consult-label::before {
content: '';
width: 6px;
height: 6px;
background-color: var(--consult-bright);
border-radius: 50%;
box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
animation: consult-pulse 2s infinite ease-in-out;
    }

    @keyframes consult-pulse {
0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4); }
70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(59, 130, 246, 0); }
100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); }
    }

    .consult-title {
font-size: 2.4rem;
font-weight: 800;
line-height: 1.25;
margin-bottom: 15px;
color: var(--consult-text);
letter-spacing: -0.02em;
word-break: keep-all; /* Prevent awkward word breaking (Korean) */
    }

    .consult-desc {
font-size: 1.15rem;
color: var(--consult-sub);
line-height: 1.6;
font-weight: 500;
word-break: keep-all; /* Prevent awkward word breaking (Korean) */
    }

    /* Button Area */
    .consult-action {
flex-shrink: 0;
    }

    .consult-btn {
position: relative;
display: inline-flex;
align-items: center;
justify-content: center;
padding: 22px 55px;
font-size: 1.1rem;
font-weight: 700;
color: #ffffff !important; /* Force White Text */
text-decoration: none;
/* Gradient Background */
background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
border-radius: 12px;
transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
overflow: hidden;
box-shadow: 0 10px 20px -5px rgba(30, 41, 59, 0.3);
z-index: 10;
white-space: nowrap; /* Keep button text on one line */
    }

    /* Shimmer Effect on Button */
    .consult-btn::before {
content: '';
position: absolute;
top: 0;
left: -100%;
width: 200%;
height: 100%;
background: linear-gradient(
    115deg,
    transparent 0%,
    transparent 40%,
    rgba(255, 255, 255, 0.1) 45%,
    rgba(255, 255, 255, 0.2) 50%,
    rgba(255, 255, 255, 0.1) 55%,
    transparent 60%,
    transparent 100%
);
transition: transform 0.6s ease;
transform: translateX(0);
z-index: 1;
    }

    .consult-btn:hover {
transform: translateY(-3px);
box-shadow: 0 20px 30px -10px rgba(30, 41, 59, 0.5);
background: linear-gradient(135deg, #334155 0%, #1e293b 100%);
    }

    .consult-btn:hover::before {
transform: translateX(50%);
    }

    .consult-btn span {
position: relative;
z-index: 2;
    }

    .consult-btn svg {
margin-left: 10px;
width: 20px;
height: 20px;
fill: #ffffff;
transition: transform 0.3s ease;
position: relative;
z-index: 2;
    }

    .consult-btn:hover svg {
transform: translateX(5px);
    }

    /* RESPONSIVE DESIGN */
    @media (max-width: 1024px) {
.consult-container {
    flex-direction: column;
    text-align: center;
    padding: 50px 30px;
    gap: 40px;
}

.consult-label {
    justify-content: center;
}

.consult-text {
    max-width: 100%;
}

.consult-title {
    font-size: 2rem;
}

.consult-action {
    width: 100%;
    display: flex;
    justify-content: center;
}

.consult-btn {
    width: 100%;
    max-width: 400px;
    padding: 20px 30px;
}
    }

    @media (max-width: 480px) {
#drt-consultation-section {
    padding: 60px 20px;
}

.consult-container {
    padding: 40px 20px;
}

.consult-title {
    font-size: 1.55rem; /* Adjusted for safe wrapping on small screens */
}

.consult-desc {
    font-size: 1rem;
}
    }


			
/* [RESET] */
html, body {
    margin: 0 !important;
    padding: 0 !important;
    background-color: #0d0d0f;
}

:root {
    --footer-bg: #0d0d0f;
    --accent-blue: #234177; /* Official Brand Color: Deep Blue */
    --accent-bright: #4a7edb; /* Shimmer/Glow Variant */
    --accent-glow: rgba(35, 65, 119, 0.4);
    --text-main: #ffffff;
    --text-dim: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.08);
    --glass-bg: rgba(255, 255, 255, 0.03);
}

#drt-premium-footer {
    background-color: var(--footer-bg);
    color: var(--text-main);
    padding: 45px 20px 35px; /* Slightly reduced vertical size */
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    position: relative;
    overflow: hidden;
    width: 100%;
    box-sizing: border-box;
    border-top: 1px solid var(--border-color);
}

/* Top Accent Line - Cybernetic Glow (Restored Animation) */
#drt-premium-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-bright), transparent);
    opacity: 0.8;
    animation: line-pulse 4s infinite alternate;
    z-index: 10;
}

@keyframes line-pulse {
    0% { opacity: 0.3; width: 30%; left: 0; }
    50% { opacity: 1; width: 60%; left: 20%; }
    100% { opacity: 0.3; width: 30%; left: 70%; }
}

/* Subtle Background Patterns */
#drt-premium-footer::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.5;
    pointer-events: none;
}

.footer-container {
    max-width: 1400px;
    width: 95%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 40px; /* Tighter gap */
    position: relative;
    z-index: 20;
}

/* Top Section: Luxury Branding */
.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-branding .logo {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.03rem;
    background: linear-gradient(135deg, #ffffff 40%, var(--accent-bright), #ffffff 80%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    animation: logo-shimmer 6s linear infinite;
}

@keyframes logo-shimmer {
    to { background-position: 200% center; }
}

.footer-branding .sub-tagline {
    font-size: 0.9rem;
    color: var(--accent-bright);
    text-transform: uppercase;
    letter-spacing: 0.4em;
    margin-top: 8px;
    font-weight: 700;
    opacity: 0.9;
}

.footer-links {
    display: flex;
    gap: 40px;
}

.footer-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    padding: 10px 20px;
    border-radius: 4px;
    background: transparent;
    border: 1px solid transparent;
}

.footer-links a:hover {
    color: #fff;
    background: var(--glass-bg);
    border-color: var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    transform: translateY(-3px);
}

/* Middle Section: Sophisticated Info Grid */
.footer-info {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.info-label {
    font-size: 0.9rem;
    color: var(--accent-bright);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: flex;
    align-items: center;
    gap: 10px;
}

.info-label::before {
    content: '';
    width: 5px;
    height: 5px;
    background-color: var(--accent-bright);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-bright);
    animation: dot-pulse 2s ease-in-out infinite;
}

@keyframes dot-pulse {
    0% { transform: scale(1); opacity: 1; box-shadow: 0 0 10px var(--accent-bright); }
    50% { transform: scale(1.5); opacity: 0.7; box-shadow: 0 0 20px var(--accent-bright); }
    100% { transform: scale(1); opacity: 1; box-shadow: 0 0 10px var(--accent-bright); }
}

.info-value {
    font-size: 1.1rem; /* Slightly balanced */
    color: var(--text-main);
    font-weight: 400;
    line-height: 1.7;
    opacity: 0.95;
}

/* Bottom Section: Clean Copyright */
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
}

.copyright {
    font-size: 1rem;
    color: var(--text-dim);
    letter-spacing: 0.02em;
}

.bottom-links {
    display: flex;
    gap: 25px;
    font-size: 0.9rem;
    color: var(--text-main);
    font-weight: 600;
    opacity: 0.6;
    align-items: center;
}

.designer-credit {
    color: var(--accent-bright);
    font-weight: 700;
    letter-spacing: 0.05em;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .footer-info {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

@media (max-width: 768px) {
    #drt-premium-footer {
        padding: 40px 20px 100px;
    }
    .footer-top {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .footer-links {
        gap: 15px;
        flex-direction: column;
        width: 100%;
    }
    .footer-links a {
        padding: 12px;
        font-size: 1rem;
    }
    .footer-info {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    .info-label {
        justify-content: center;
    }
    .info-value {
        font-size: 1.05rem;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

/* ============================================================
   회사소개 개편(연혁 아래): ab- 접두어. 이 페이지의 기존 변수·글자체·흰 유리 카드 문법을 따른다.
   rem 은 10px 기준(remRoot: 10). 카드 반복 대신 얇은 선으로 나눈 목록·표를 쓴다.
   ============================================================ */
.ab-section { max-width: 1400px; width: 90%; margin: 0 auto; padding: 100px 0; position: relative; z-index: 10; }
.ab-band { width: 100%; background: #f7f9fc; border-top: 1px solid var(--drt-border); border-bottom: 1px solid var(--drt-border); }
.ab-head { margin-bottom: 56px; }
.ab-head.is-center { text-align: center; }
.ab-label { color: var(--drt-bright); font-weight: 800; font-size: 1.2rem; letter-spacing: 0.3em; text-transform: uppercase; margin-bottom: 18px; }
.ab-title { font-size: 3.2rem; font-weight: 900; margin: 0; color: var(--drt-accent); line-height: 1.15; }
.ab-lead { color: var(--drt-text-dim); font-size: 1.3rem; margin: 18px 0 0; }
.ab-note { font-size: 1.2rem; color: var(--drt-text-dim); margin-top: 24px; }

/* 등장 효과: site.js 가 ab-reveal 에 ab-active 를 붙인다 */
html.js .ab-reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
html.js .ab-reveal.ab-active { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html.js .ab-reveal { opacity: 1; transform: none; transition: none; } }

/* 1. 숫자로 보는 DRT: 왼쪽에 누적 합계 하나를 크게, 오른쪽에 그 합을 이루는 세 묶음을 얇은 선으로 */
.ab-numbers { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 48px 96px; align-items: center; }
.ab-total strong { display: flex; align-items: flex-start; font-size: 20rem; font-weight: 900; line-height: 0.9; color: var(--drt-accent); letter-spacing: -0.04em; font-variant-numeric: tabular-nums; }
.ab-total sup { font-size: 0.45em; line-height: 1; margin: 0.06em 0 0 0.04em; color: var(--drt-bright); top: 0; }
.ab-total b { display: block; margin-top: 22px; font-size: 2.2rem; font-weight: 800; color: var(--drt-text-main); }
.ab-total p { margin: 10px 0 0; max-width: 460px; font-size: 1.4rem; line-height: 1.7; color: var(--drt-text-dim); }
.ab-parts { margin: 0; padding: 0; border-top: 1px solid rgba(35, 65, 119, 0.15); }
.ab-parts li { list-style: none; display: grid; grid-template-columns: 120px 1fr; gap: 20px; align-items: center; padding: 26px 0; border-bottom: 1px solid rgba(35, 65, 119, 0.15); }
.ab-parts strong { font-size: 7.2rem; font-weight: 900; line-height: 1; color: var(--drt-accent); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.ab-parts b { display: block; font-size: 1.8rem; font-weight: 800; color: var(--drt-text-main); }
.ab-parts span { display: block; margin-top: 6px; font-size: 1.3rem; line-height: 1.55; color: var(--drt-text-dim); }

/* 2. 연혁: 연도 탭 + 달별 글줄(카드 없음). 스크립트가 없으면 탭 없이 모든 해가 차례로 보인다 */
.ab-hist { max-width: 1100px; margin: 0 auto; }
.ab-hist-tabs { display: none; justify-content: center; gap: 6px; margin-bottom: 40px; border-bottom: 1px solid rgba(35, 65, 119, 0.12); }
html.js .ab-hist-tabs { display: flex; }
.ab-hist-tabs button { position: relative; padding: 12px 22px 14px; border: 0; background: none; font: inherit; font-size: 1.8rem; font-weight: 800; letter-spacing: 0.02em; color: var(--drt-text-dim); cursor: pointer; font-variant-numeric: tabular-nums; transition: color .15s; }
.ab-hist-tabs button:hover { color: var(--drt-accent); }
.ab-hist-tabs button[aria-selected="true"] { color: var(--drt-accent); }
.ab-hist-tabs button[aria-selected="true"]::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: -1px; height: 3px; border-radius: 2px; background: var(--drt-accent); }
.ab-hist-panel { display: grid; grid-template-columns: 220px 1fr; gap: 24px 48px; align-items: start; }
.ab-hist-panel + .ab-hist-panel { margin-top: 56px; }
html.js .ab-hist-panel:not(.is-on) { display: none; }
html.js .ab-hist-panel + .ab-hist-panel { margin-top: 0; }
.ab-hist-year { font-size: 6.4rem; font-weight: 900; line-height: 1; color: var(--drt-accent); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.ab-hist-list { margin: 0; border-top: 2px solid var(--drt-accent); }
.ab-hist-list > div { display: grid; grid-template-columns: 52px 1fr; column-gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--drt-border); }
.ab-hist-list dt { font-size: 1.6rem; font-weight: 800; line-height: 1.6; color: var(--drt-bright); font-variant-numeric: tabular-nums; }
.ab-hist-list dd { grid-column: 2; margin: 0; font-size: 1.5rem; line-height: 1.6; color: var(--drt-text-main); word-break: keep-all; }
.ab-hist-list dd + dd { margin-top: 4px; }

/* 3. 사업 영역: 큰 것 하나 + 가로 줄 셋 */
.ab-biz { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 6fr); gap: 32px; align-items: stretch; }
.ab-biz-main { display: flex; flex-direction: column; background: var(--drt-glass); border: 1px solid var(--drt-border); border-radius: 16px; overflow: hidden; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04); color: inherit; text-decoration: none; transition: box-shadow .4s ease, transform .4s ease; }
.ab-biz-main figure { margin: 0; aspect-ratio: 4 / 3; overflow: hidden; background: #e6e8ec; }
.ab-biz-main img, .ab-biz-row img { width: 100%; height: 100%; object-fit: cover; display: block; }
.ab-biz-body { padding: 28px 32px 32px; }
.ab-biz-kind { display: block; font-size: 1.15rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--drt-bright); }
.ab-biz h3 { margin: 8px 0 0; font-size: 2.2rem; font-weight: 900; color: var(--drt-accent); }
.ab-biz p { margin: 8px 0 0; font-size: 1.35rem; line-height: 1.6; color: var(--drt-text-dim); }
.ab-biz-more { display: inline-block; margin-top: 14px; font-size: 1.3rem; font-weight: 700; color: var(--drt-accent); }
.ab-biz-more::after { content: ""; display: inline-block; width: 7px; height: 7px; margin-left: 6px; border-right: 1.5px solid currentColor; border-top: 1.5px solid currentColor; transform: rotate(45deg); vertical-align: 1px; }
.ab-biz-list { display: flex; flex-direction: column; gap: 16px; }
.ab-biz-row { display: grid; grid-template-columns: 180px 1fr; gap: 0; flex: 1; background: var(--drt-glass); border: 1px solid var(--drt-border); border-radius: 14px; overflow: hidden; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03); color: inherit; text-decoration: none; transition: box-shadow .4s ease, transform .4s ease; }
.ab-biz-row figure { margin: 0; min-height: 132px; overflow: hidden; background: #e6e8ec; }
.ab-biz-row .ab-biz-body { padding: 20px 24px; align-self: center; }
.ab-biz-row h3 { font-size: 1.8rem; }
.ab-biz-row p { font-size: 1.25rem; }
.ab-biz-row .ab-biz-more { margin-top: 8px; font-size: 1.2rem; }
.ab-biz-main:hover, .ab-biz-row:hover { transform: translateY(-4px); box-shadow: 0 20px 50px rgba(35, 65, 119, 0.12); }

/* 4. Core Values: 번호 01·02·03, 얇은 윗선 세 열 */
.ab-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; margin: 0; padding: 0; }
.ab-values li { list-style: none; padding-top: 26px; border-top: 2px solid var(--drt-accent); }
.ab-values i { display: block; font-style: normal; font-size: 1.3rem; font-weight: 800; letter-spacing: 0.2em; color: var(--drt-bright); }
.ab-values h3 { margin: 14px 0 0; font-size: 2.2rem; font-weight: 800; color: var(--drt-accent); }
.ab-values .ab-value-summary { margin: 12px 0 0; font-size: 1.5rem; font-weight: 700; line-height: 1.5; color: var(--drt-text-main); }
.ab-values .ab-value-detail { margin: 14px 0 0; font-size: 1.3rem; line-height: 1.75; color: var(--drt-text-dim); }

/* 5. 회사 개요 · 오시는 길: 표 + 지도 버튼 */
.ab-company { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 48px 72px; align-items: start; }
.ab-table { margin: 0; border-top: 2px solid var(--drt-accent); }
.ab-table > div { display: grid; grid-template-columns: 170px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--drt-border); font-size: 1.4rem; line-height: 1.55; }
.ab-table dt { color: var(--drt-text-dim); font-weight: 700; }
.ab-table dd { margin: 0; color: var(--drt-text-main); }
.ab-table dd span { display: block; }
.ab-table a { color: var(--drt-accent); text-decoration: underline; text-underline-offset: 3px; }
.ab-map { background: var(--drt-glass); border: 1px solid var(--drt-border); border-radius: 16px; padding: 32px; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04); }
.ab-map h3 { margin: 0; font-size: 2rem; font-weight: 800; color: var(--drt-accent); }
.ab-map address { font-style: normal; margin-top: 12px; font-size: 1.4rem; line-height: 1.6; color: var(--drt-text-main); }
.ab-map p { margin: 8px 0 0; font-size: 1.25rem; color: var(--drt-text-dim); }
.ab-map-btns { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.ab-btn { display: inline-flex; align-items: center; height: 44px; padding: 0 22px; border-radius: 999px; font-size: 1.4rem; font-weight: 600; text-decoration: none; border: 1px solid var(--drt-accent); color: var(--drt-accent); background: #fff; transition: background-color .15s, color .15s; }
.ab-btn:hover { background: var(--drt-accent); color: #fff; }
.ab-btn.is-fill { background: var(--drt-accent); color: #fff; }
.ab-btn.is-fill:hover { background: #1a3260; border-color: #1a3260; }

@media (max-width: 1024px) {
  .ab-section { padding: 80px 0; }
  .ab-title { font-size: 2.6rem; }
  .ab-numbers { grid-template-columns: 1fr; gap: 36px; }
  .ab-total strong { font-size: 13rem; }
  .ab-hist-panel { grid-template-columns: 1fr; gap: 20px; }
  .ab-hist-year { font-size: 4.8rem; }
  .ab-biz { grid-template-columns: 1fr; }
  .ab-values { grid-template-columns: 1fr; gap: 32px; }
  .ab-company { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 640px) {
  .ab-section { width: calc(100% - 32px); padding: 64px 0; }
  .ab-head { margin-bottom: 36px; }
  .ab-label { font-size: 1.1rem; margin-bottom: 12px; }
  .ab-title { font-size: 2.3rem; }
  .ab-total strong { font-size: 10rem; }
  .ab-total b { margin-top: 16px; font-size: 1.9rem; }
  .ab-parts li { grid-template-columns: 88px 1fr; gap: 16px; padding: 20px 0; }
  .ab-parts strong { font-size: 5rem; }
  .ab-parts b { font-size: 1.6rem; }
  .ab-parts span { font-size: 1.25rem; }
  .ab-hist-tabs { margin-bottom: 28px; }
  .ab-hist-tabs button { padding: 10px 14px 12px; font-size: 1.6rem; }
  .ab-hist-year { font-size: 4rem; }
  .ab-hist-list > div { grid-template-columns: 40px 1fr; column-gap: 14px; padding: 12px 0; }
  .ab-hist-list dt { font-size: 1.45rem; }
  .ab-hist-list dd { font-size: 1.4rem; }
  .ab-biz-row { grid-template-columns: 120px 1fr; }
  .ab-biz-row figure { min-height: 100px; }
  .ab-biz-row .ab-biz-body { padding: 14px 16px; }
  .ab-biz-row h3 { font-size: 1.6rem; }
  .ab-biz-row p { font-size: 1.2rem; }
  .ab-biz-body { padding: 22px 20px 24px; }
  .ab-table > div { grid-template-columns: 1fr; gap: 2px; padding: 12px 0; }
  .ab-map { padding: 24px 20px; }
}