@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css");

* {
    box-sizing: border-box;
}

:root {
    --bg: #050706;
    --surface: #101412;
    --surface-soft: #18201b;
    --text: #ffffff;
    --muted: #a8b1aa;
    --ink: #101412;
    --mint: #88ffc6;
    --mint-soft: rgba(136, 255, 198, 0.16);
    --line: rgba(136, 255, 198, 0.34);
}

html {
    background: var(--bg);
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    background: var(--bg);
    color: var(--text);
    font-family: "Pretendard", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body.menu-open {
    overflow: hidden;
}

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

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

.page-shell {
    min-height: 100vh;
    overflow: hidden;
    background:
        radial-gradient(circle at 72% 16%, rgba(136, 255, 198, 0.18), transparent 22rem),
        linear-gradient(180deg, #080a09 0%, #0f1511 48%, #050706 100%);
}

.topbar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 68px;
    padding: 0 clamp(20px, 5vw, 64px);
    border-bottom: 1px solid transparent;
    background: rgba(8, 10, 9, 0.82);
    backdrop-filter: blur(12px);
    transition: border-color 0.18s ease, background 0.18s ease;
}

.topbar.is-scrolled {
    border-bottom-color: var(--line);
    background: rgba(8, 10, 9, 0.94);
}

.brand {
    display: inline-flex;
    height: 36px;
    align-items: center;
    color: var(--text);
    font-size: 19px;
    font-weight: 950;
    letter-spacing: 0;
}

.topnav,
.topbar-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.topnav a,
.login-link,
.secondary-link {
    color: var(--muted);
    font-size: 15px;
    font-weight: 600;
}

.topnav a:hover,
.login-link:hover,
.secondary-link:hover {
    color: var(--text);
}

.topbar-try,
.cta,
.mobile-menu__cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 22px;
    background: var(--mint);
    color: var(--ink);
    font-size: 15px;
    font-weight: 800;
}

.menu-button {
    display: none;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 0;
    background: transparent;
}

.menu-button span {
    display: block;
    width: 26px;
    height: 2px;
    margin: 5px auto;
    background: var(--mint);
}

.mobile-menu {
    position: fixed;
    top: 68px;
    left: 0;
    z-index: 19;
    display: grid;
    width: 100%;
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--line);
    background: rgba(8, 10, 9, 0.96);
}

.mobile-menu[hidden] {
    display: none;
}

.mobile-menu a {
    color: var(--text);
    font-size: 17px;
    font-weight: 700;
}

.hero {
    display: grid;
    min-height: 100vh;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 520px);
    align-items: center;
    gap: clamp(32px, 6vw, 88px);
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
    padding: 112px 0 60px;
}

.hero__content {
    max-width: 640px;
}

.eyebrow,
.section-kicker {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 12px;
    border: 1px solid var(--line);
    color: var(--mint);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0;
}

.hero h1 {
    margin: 24px 0 20px;
    font-size: clamp(42px, 7vw, 82px);
    line-height: 0.98;
    letter-spacing: 0;
}

.hero-copy {
    max-width: 560px;
    margin: 0;
    color: var(--muted);
    font-size: clamp(17px, 2vw, 21px);
    font-weight: 500;
    line-height: 1.65;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-top: 34px;
}

.cta {
    min-width: 148px;
}

.hero__visual {
    position: relative;
    display: grid;
    min-height: 560px;
    align-items: end;
    justify-items: center;
}

.hero__visual::before {
    position: absolute;
    inset: 34px 0 0;
    content: "";
    border: 1px solid var(--line);
    background:
        linear-gradient(135deg, rgba(136, 255, 198, 0.18), transparent 42%),
        var(--surface);
}

.hero__uniform {
    position: relative;
    z-index: 1;
    width: min(90%, 430px);
    filter: drop-shadow(0 30px 48px rgba(0, 0, 0, 0.42));
}

.prompt-card {
    position: absolute;
    right: 0;
    bottom: 34px;
    z-index: 2;
    width: min(84%, 330px);
    padding: 18px;
    border: 1px solid var(--line);
    background: rgba(5, 7, 6, 0.84);
    backdrop-filter: blur(10px);
}

.prompt-card span {
    color: var(--mint);
    font-size: 12px;
    font-weight: 900;
}

.prompt-card p {
    margin: 8px 0 0;
    color: var(--text);
    font-size: 15px;
    font-weight: 700;
    line-height: 1.5;
}

.identity,
.process {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
    padding: 84px 0;
}

.identity {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: clamp(28px, 5vw, 64px);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.identity h2,
.process h2 {
    margin: 18px 0 0;
    font-size: clamp(30px, 4vw, 48px);
    line-height: 1.12;
    letter-spacing: 0;
}

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

.identity-grid article {
    min-width: 0;
    padding: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.04);
}

.identity-grid img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    background: var(--surface-soft);
}

.identity-grid h3 {
    margin: 16px 0 8px;
    font-size: 19px;
}

.identity-grid p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    font-weight: 500;
    line-height: 1.55;
}

.process {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.process ol {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin: 34px 0 0;
    padding: 0;
    list-style: none;
}

.process li {
    display: grid;
    gap: 16px;
    min-height: 140px;
    padding: 22px;
    border: 1px solid var(--line);
    background: var(--mint-soft);
}

.process strong {
    color: var(--mint);
    font-size: 14px;
}

.process span {
    align-self: end;
    font-size: 22px;
    font-weight: 900;
}

@media (max-width: 860px) {
    .topnav,
    .login-link,
    .topbar-try {
        display: none;
    }

    .menu-button {
        display: block;
    }

    .hero {
        min-height: auto;
        grid-template-columns: 1fr;
        padding-top: 104px;
    }

    .hero h1 {
        font-size: clamp(42px, 13vw, 62px);
    }

    .hero-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .secondary-link {
        display: inline-flex;
        min-height: 44px;
        align-items: center;
    }

    .hero__visual {
        min-height: 430px;
    }

    .identity,
    .identity-grid,
    .process ol {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 520px) {
    .topbar {
        height: 60px;
        padding: 0 20px;
    }

    .brand {
        height: 31px;
        font-size: 17px;
    }

    .mobile-menu {
        top: 60px;
    }

    .hero,
    .identity,
    .process {
        width: min(100% - 32px, 393px);
    }

    .hero__visual {
        min-height: 380px;
    }

    .prompt-card {
        right: 10px;
        bottom: 20px;
    }
}