:root {
    --bg: #f4f6f8;
    --surface: #ffffff;
    --surface-alt: #eef2f6;
    --text: #1f2933;
    --muted: #5b6672;
    --line: #d7dde4;
    --primary: #234b6b;
    --primary-soft: #e5edf4;
    --accent: #3f6b8f;
    --shadow: 0 12px 32px rgba(24, 39, 58, 0.08);
    --radius: 18px;
    --container: 1160px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Pretendard Variable", "Noto Sans KR", sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}

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

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

button,
input,
textarea {
    font: inherit;
}

.container {
    width: min(calc(100% - 40px), var(--container));
    margin: 0 auto;
}

.narrow {
    max-width: 860px;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(10px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 76px;
}

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.logo-mark {
    display: inline-grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    font-weight: 700;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-text strong {
    font-size: 1.05rem;
}

.logo-text small {
    color: var(--muted);
    font-size: 0.78rem;
}

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

.gnb a {
    padding: 10px 14px;
    border-radius: 999px;
    color: var(--muted);
    font-size: 0.95rem;
}

.gnb a:hover,
.gnb a.is-active {
    background: var(--primary-soft);
    color: var(--primary);
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fff;
    padding: 0;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    margin: 4px auto;
    background: var(--text);
}

.hero,
.page-hero {
    background: linear-gradient(180deg, #f9fbfc 0%, #eef3f7 100%);
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 38px;
    align-items: center;
    padding: 104px 0 82px;
}

.hero-copy h1,
.page-hero h1,
.section-head h2,
.cta-box h2 {
    margin: 0;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.hero-copy h1 {
    font-size: clamp(2.6rem, 5vw, 4.3rem);
}

.hero-copy p,
.page-hero p,
.section-head p,
.card p,
.footer-text,
.form-note,
.timeline-box p {
    color: var(--muted);
}

.hero-copy {
    display: grid;
}

.hero-lead {
    margin: 18px 0 0;
    max-width: 720px;
    font-size: 1.12rem;
    line-height: 1.85;
}

.hero-summary {
    margin: 20px 0 0;
    max-width: 640px;
    font-size: 0.98rem;
}

.hero-actions {
    margin-top: 30px;
}

.page-hero {
    padding: 78px 0 28px;
}

.page-hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
}

.section {
    padding: 76px 0;
}

.section-alt {
    background: #eef3f7;
}

.section-alt-soft {
    background: #f7f9fb;
}

.section-head {
    margin-bottom: 28px;
}

.section-head.center {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.section-label {
    margin: 0 0 14px;
    color: var(--accent);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 600;
    transition: 0.2s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-light {
    background: #fff;
    color: var(--primary);
    border-color: var(--line);
}

.hero-panel-card,
.card,
.notice-box,
.list-panel p,
.info-table,
.cta-box,
.alert,
.timeline-box {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.hero-panel {
    width: 100%;
}

.hero-panel-card {
    padding: 30px;
}

.hero-panel-card strong {
    display: block;
    margin-bottom: 18px;
    font-size: 1.12rem;
}

.hero-feature-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 12px;
}

.hero-feature-list li {
    position: relative;
    padding-left: 18px;
    color: var(--muted);
}

.hero-feature-list li::before {
    content: "";
    position: absolute;
    top: 11px;
    left: 0;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
}

.card-grid,
.contact-layout,
.footer-inner,
.form-grid,
.split-section {
    display: grid;
    gap: 22px;
}

.card-grid.four-col {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card-grid.three-col {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-grid.two-col {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
    padding: 28px;
}

.card h2,
.card h3,
.timeline-box h3 {
    margin-top: 0;
    margin-bottom: 12px;
    font-size: 1.25rem;
}

.split-section {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
}

.list-panel {
    display: grid;
    gap: 14px;
}

.list-panel p {
    margin: 0;
    padding: 18px 20px;
}

.cta-section {
    padding-top: 0;
}

.cta-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 28px 32px;
}

.info-table {
    overflow: hidden;
}

.info-table div {
    display: grid;
    grid-template-columns: 190px 1fr;
    gap: 16px;
    padding: 18px 22px;
    border-bottom: 1px solid var(--line);
}

.info-table div:last-child {
    border-bottom: 0;
}

.contact-layout {
    grid-template-columns: 0.82fr 1.18fr;
    align-items: start;
}

.contact-summary h2 {
    margin-top: 0;
}

.contact-meta {
    margin-top: 24px;
    display: grid;
    gap: 12px;
}

.contact-meta p {
    margin: 0;
    display: grid;
    gap: 4px;
}

.form-card {
    padding: 28px;
}

.alert {
    padding: 16px 18px;
    margin-bottom: 16px;
}

.alert.success {
    border-color: #b9d8c5;
    background: #eef8f1;
    color: #1d5a37;
}

.alert.error {
    border-color: #e3c2c2;
    background: #fff4f4;
    color: #8f2f2f;
}

.alert ul {
    margin: 10px 0 0;
    padding-left: 18px;
}

.contact-form {
    display: grid;
    gap: 18px;
}

.form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.contact-form label {
    display: grid;
    gap: 8px;
}

.contact-form span {
    font-weight: 600;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fff;
    padding: 13px 14px;
    outline: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(63, 107, 143, 0.12);
}

.form-note {
    margin: -4px 0 0;
    font-size: 0.94rem;
}

.site-footer {
    margin-top: 40px;
    padding: 32px 0 24px;
    background: #fff;
    border-top: 1px solid var(--line);
}

.footer-inner {
    grid-template-columns: 1.2fr 0.9fr 1fr;
}

.footer-title {
    margin: 0 0 10px;
    font-weight: 700;
}

.footer-text {
    margin: 0 0 8px;
}

.footer-bottom {
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.92rem;
}

.notice-box {
    padding: 22px 24px;
    text-align: center;
    font-weight: 500;
}

.timeline-section {
    background: #f7f9fb;
}

.timeline {
    position: relative;
    display: grid;
    gap: 30px;
}

.timeline::before {
    content: "";
    position: absolute;
    top: 10px;
    bottom: 10px;
    left: 103px;
    width: 2px;
    background: rgba(35, 75, 107, 0.14);
}

.timeline-year {
    position: relative;
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 30px;
    align-items: start;
}

.timeline-year-label {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 106px;
    min-height: 52px;
    padding: 0 18px;
    border-radius: 999px;
    background: var(--primary-soft);
    border: 1px solid rgba(35, 75, 107, 0.12);
    color: var(--primary);
    font-size: 1.02rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.timeline-items {
    display: grid;
    gap: 14px;
}

.timeline-item {
    position: relative;
    padding: 18px 22px 18px 26px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-left: 4px solid rgba(35, 75, 107, 0.52);
    border-radius: 16px;
    box-shadow: 0 8px 20px rgba(24, 39, 58, 0.05);
    color: var(--text);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.timeline-item::before {
    content: "";
    position: absolute;
    top: 24px;
    left: -36px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 6px rgba(35, 75, 107, 0.08);
}

.timeline-item:hover {
    border-left-color: var(--primary);
    box-shadow: 0 10px 24px rgba(24, 39, 58, 0.08);
}

.strength-section {
    background: #ffffff;
}

.strength-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.strength-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 18px;
    box-shadow: 0 8px 20px rgba(24, 39, 58, 0.05);
    padding: 28px;
}

.strength-card h3 {
    margin: 0 0 12px;
    font-size: 1.18rem;
}

.strength-card p {
    margin: 0;
    color: var(--muted);
}

@media (max-width: 1024px) {
    .hero-inner,
    .card-grid.four-col,
    .card-grid.three-col,
    .strength-grid,
    .footer-inner,
    .split-section,
    .contact-layout {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .contact-layout,
    .split-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-inner,
    .card-grid.four-col,
    .card-grid.three-col,
    .card-grid.two-col,
    .strength-grid,
    .footer-inner,
    .form-grid {
        grid-template-columns: 1fr;
    }

    .hero-inner {
        padding: 74px 0 58px;
    }

    .hero-copy h1 {
        font-size: 2.3rem;
    }

    .hero-lead {
        font-size: 1rem;
        line-height: 1.75;
    }

    .hero-panel-card {
        padding: 24px;
    }

    .section {
        padding: 60px 0;
    }

    .page-hero {
        padding: 62px 0 20px;
    }

    .cta-box {
        flex-direction: column;
        align-items: flex-start;
    }

    .info-table div {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .timeline::before {
        left: 22px;
    }

    .timeline-year {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .timeline-year-label {
        min-width: 92px;
        min-height: 46px;
        padding: 0 16px;
        font-size: 0.96rem;
    }

    .timeline-item {
        margin-left: 22px;
        padding: 16px 18px 16px 22px;
    }

    .timeline-item::before {
        left: -28px;
        top: 22px;
    }

    .logo-text small {
        display: none;
    }
}