:root {
    --bg: #eef3f1;
    --bg-deep: #d9e5e1;
    --ink: #1a2c2a;
    --ink-soft: #4a5f5b;
    --muted: #6b7f7a;
    --line: rgba(26, 44, 42, 0.12);
    --surface: rgba(255, 255, 255, 0.72);
    --surface-strong: #f7faf9;
    --accent: #2f6f68;
    --accent-deep: #1f4f4a;
    --accent-soft: rgba(47, 111, 104, 0.12);
    --shadow: 0 18px 50px rgba(26, 44, 42, 0.08);
    --font-sans: "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
    --font-display: "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background:
        radial-gradient(ellipse 80% 50% at 10% -10%, rgba(47, 111, 104, 0.14), transparent 55%),
        radial-gradient(ellipse 60% 40% at 90% 0%, rgba(120, 140, 130, 0.18), transparent 50%),
        linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
    color: var(--ink);
    line-height: 1.65;
    padding-top: 72px;
    min-height: 100vh;
}

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

.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(238, 243, 241, 0.88);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
}

.nav-container {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 14px 20px 14px 8vw;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.45rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--ink);
}

.nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: flex-end;
    align-items: center;
}

.nav-link {
    padding: 7px 12px;
    border-radius: 999px;
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--ink-soft);
    transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}

.nav-link:hover,
.nav-link.active {
    background: var(--accent-soft);
    color: var(--accent-deep);
}

.nav-link.nav-btn {
    border: 1px solid var(--line);
    background: var(--surface);
}

.nav-link.nav-cta {
    background: var(--accent);
    color: #f7faf9;
    border: 1px solid var(--accent);
}

.nav-link.nav-cta:hover {
    background: var(--accent-deep);
    color: #fff;
}

.hero {
    position: relative;
    min-height: calc(100vh - 72px);
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 72px 8vw 88px;
}

.hero-atmosphere {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(120deg, rgba(238, 243, 241, 0.2) 0%, transparent 45%),
        radial-gradient(circle at 70% 40%, rgba(47, 111, 104, 0.18), transparent 42%),
        url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
    animation: atmosphereDrift 18s ease-in-out infinite alternate;
    pointer-events: none;
}

@keyframes atmosphereDrift {
    from { transform: scale(1) translate3d(0, 0, 0); }
    to { transform: scale(1.05) translate3d(-1.5%, 1%, 0); }
}

.hero-layout {
    position: relative;
    z-index: 1;
    flex: 1;
    min-width: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: start;
    gap: 48px;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 14px;
    animation: riseIn 0.9s ease both;
}

.hero-headline {
    display: flex;
    align-items: flex-start;
    justify-content: flex-end;
    animation: riseIn 1.1s ease both;
}

.hero-headline h1 {
    font-family: var(--font-display);
    font-size: clamp(2.4rem, 5.2vw, 4rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.04em;
    color: var(--ink);
    text-align: right;
}

@keyframes riseIn {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}

.brand-mark {
    display: flex;
    align-items: baseline;
    gap: 12px;
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 5.5vw, 3.4rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--ink);
    line-height: 1.05;
}

.brand-mark-ko {
    font-weight: 800;
}

.brand-mark-en {
    font-size: clamp(1rem, 2vw, 1.35rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--accent);
}

.eyebrow {
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--accent);
}

/* .hero h1 은 .hero-headline h1 로 대체됨 */

.subtext {
    max-width: 38rem;
    color: var(--ink-soft);
    font-size: 1.05rem;
}

.cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 8px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 13px 22px;
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.95rem;
    border: 1px solid transparent;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.btn.primary {
    background: var(--accent);
    color: #f7faf9;
    box-shadow: 0 10px 28px rgba(47, 111, 104, 0.22);
}

.btn.primary:hover {
    background: var(--accent-deep);
    transform: translateY(-2px);
}

.btn.ghost {
    background: transparent;
    border-color: var(--line);
    color: var(--ink);
}

.btn.ghost:hover {
    background: var(--surface);
    border-color: var(--accent);
    color: var(--accent-deep);
}

.hero-assurance {
    margin-top: 8px;
    font-size: 0.88rem;
    color: var(--muted);
}

.section {
    padding: 78px 8vw;
}

.section-title {
    max-width: 640px;
    margin-bottom: 28px;
}

.section-title h2 {
    font-family: var(--font-display);
    font-size: clamp(1.7rem, 3vw, 2.3rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin: 8px 0;
}

.section-title .desc {
    color: var(--ink-soft);
}

.privacy {
    background: rgba(255, 255, 255, 0.35);
}

.assurance-list {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.assurance-item {
    padding: 22px 20px;
    border-top: 1px solid var(--line);
}

.assurance-item h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.assurance-item p {
    color: var(--ink-soft);
    font-size: 0.95rem;
}

.topic-rows {
    display: flex;
    flex-direction: column;
    gap: 0;
    border-top: 1px solid var(--line);
}

.topic-row {
    display: grid;
    grid-template-columns: minmax(140px, 220px) 1fr;
    gap: 18px;
    padding: 22px 18px;
    margin: 0 -18px;
    border-radius: 14px;
    border-bottom: 1px solid var(--line);
    background: transparent;
    box-shadow: none;
    transition:
        background 0.22s ease,
        box-shadow 0.22s ease,
        border-color 0.22s ease,
        transform 0.22s ease;
}

.topic-row:last-child {
    border-bottom-color: transparent;
}

.topic-row h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
}

.topic-row p {
    color: var(--ink-soft);
}

/* 마우스·트랙패드만: 터치에서는 sticky hover 방지 */
@media (hover: hover) and (pointer: fine) {
    .topic-row:hover {
        background: rgba(255, 255, 255, 0.88);
        border-bottom-color: transparent;
        box-shadow:
            0 10px 28px rgba(26, 44, 42, 0.1),
            0 2px 8px rgba(47, 111, 104, 0.06);
        transform: translateY(-1px);
    }
}

.topic-row:focus-within {
    outline: 2px solid rgba(47, 111, 104, 0.35);
    outline-offset: 2px;
}

.steps {
    list-style: none;
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    counter-reset: none;
}

.step {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 22px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.step:hover {
    transform: translateY(-4px);
}

.step-number {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.95rem;
    color: var(--accent);
    margin-bottom: 10px;
}

.step h3 {
    font-size: 1.05rem;
    margin-bottom: 8px;
}

.step p {
    color: var(--ink-soft);
    font-size: 0.94rem;
}

.cta-center {
    text-align: center;
    margin-top: 28px;
}

.feature-grid {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature {
    padding: 22px 20px;
    background: var(--surface-strong);
    border: 1px solid var(--line);
    border-radius: 16px;
    transition:
        background 0.22s ease,
        box-shadow 0.22s ease,
        border-color 0.22s ease;
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 16px;
    border-radius: 14px;
    background: linear-gradient(145deg, rgba(47, 111, 104, 0.14), rgba(47, 111, 104, 0.06));
    border: 1px solid rgba(47, 111, 104, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}

.feature-icon svg {
    width: 34px;
    height: 34px;
}

@media (hover: hover) and (pointer: fine) {
    .feature:hover {
        background: #fff;
        border-color: rgba(47, 111, 104, 0.18);
        box-shadow: 0 8px 24px rgba(26, 44, 42, 0.08);
    }
}

.feature h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.feature p {
    color: var(--ink-soft);
    font-size: 0.94rem;
}

.support {
    padding-top: 40px;
}

.support-panel {
    max-width: 820px;
    margin: 0 auto;
    padding: 36px 28px;
    background: linear-gradient(160deg, rgba(47, 111, 104, 0.1), rgba(255, 255, 255, 0.65));
    border: 1px solid var(--line);
    border-radius: 24px;
    box-shadow: var(--shadow);
    animation: riseIn 1s ease both;
}

.support-panel h2 {
    font-family: var(--font-display);
    font-size: clamp(1.7rem, 3vw, 2.2rem);
    margin: 8px 0 12px;
}

.support-lead {
    color: var(--ink-soft);
    margin-bottom: 16px;
}

.support-list {
    margin: 0 0 20px 1.1rem;
    color: var(--ink-soft);
}

.support-list li {
    margin-bottom: 8px;
}

.support-list a {
    color: var(--accent-deep);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.footer {
    padding: 22px 8vw 18px;
    background: #152422;
    color: #a8bbb6;
}

.footer-inner {
    display: flex;
    gap: 20px 40px;
    flex-wrap: wrap;
    justify-content: space-between;
}

.footer-company h3 {
    color: #eef3f1;
    margin-bottom: 2px;
    font-size: 0.92rem;
}

.footer-product {
    color: #7eb5ad;
    font-weight: 600;
    margin-bottom: 6px;
    font-size: 0.8rem;
}

.footer-company p,
.footer-address p {
    margin: 0 0 3px;
    font-size: 0.78rem;
    line-height: 1.4;
}

.footer-en {
    font-size: 0.72rem !important;
    color: #7d918c;
}

.footer a {
    color: #d5e4df;
}

.footer a:hover {
    color: #9fd0c7;
}

.disclaimer {
    margin-top: 12px;
    font-size: 0.72rem;
    color: #7d918c;
    line-height: 1.45;
}

.footer-copy {
    margin-top: 6px;
    font-size: 0.72rem;
    color: #6a7f79;
}

@media (max-width: 900px) {
    .assurance-list,
    .steps,
    .feature-grid {
        grid-template-columns: 1fr;
    }

    .topic-row {
        grid-template-columns: 1fr;
        gap: 6px;
        padding: 18px 14px;
        margin: 0 -14px;
        border-radius: 12px;
    }

    @media (hover: hover) and (pointer: fine) {
        .topic-row:hover {
            transform: none;
            box-shadow: 0 6px 18px rgba(26, 44, 42, 0.08);
        }
    }
}

@media (max-width: 700px) {
    body {
        padding-top: 64px;
    }

    .nav-container {
        padding: 10px 12px 10px 6vw;
        flex-wrap: wrap;
    }

    .nav-logo {
        font-size: 1.2rem;
    }

    .nav-links {
        width: 100%;
        justify-content: flex-start;
        gap: 4px;
    }

    .nav-link {
        padding: 6px 10px;
        font-size: 0.76rem;
    }

    .hero {
        min-height: auto;
        padding: 56px 6vw 64px;
    }

    .hero-layout {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .hero-headline {
        justify-content: flex-start;
    }

    .hero-headline h1 {
        text-align: left;
        font-size: clamp(2rem, 8vw, 2.8rem);
    }

    .brand-mark {
        flex-wrap: wrap;
        gap: 8px;
    }

    .brand-mark {
        font-size: 2.2rem;
    }

    .section {
        padding: 56px 6vw;
    }

    .support-panel {
        padding: 28px 18px;
    }

    .cta-group {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        width: 100%;
    }

    .footer {
        padding: 18px 6vw 14px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .hero-atmosphere,
    .hero-content,
    .support-panel,
    .step {
        animation: none;
        transition: none;
    }
}