/*
 * The landing page shares the app's palette on purpose: someone who arrives from a share card and
 * then installs should not feel handed off to a different product.
 */
:root {
    --bg0: #07080c;
    --bg1: #0e1117;
    --bg2: #161a23;
    --bg3: #1f2430;
    --stroke: #2e3542;
    --text: #f2f5fa;
    --text-2: #a9b3c4;
    --text-3: #6e7a8e;
    --brand: #7c6bff;
    --brand-light: #9a8cff;
    --deep: #ffc53d;
    --accept: #35e08a;
    --combo: #ff9f43;
    --info: #35c3ff;
    --ink: #0b0d12;
    --radius: 18px;
    --max: 960px;
}

* { box-sizing: border-box; }

/* The class on a .btn sets display, which outranks the UA stylesheet's [hidden] rule. Without this
   the CTAs that have no URL yet render anyway, as dead buttons. */
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--bg0);
    color: var(--text);
    font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
        "Noto Sans KR", "Malgun Gothic", system-ui, sans-serif;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    word-break: keep-all;
}

a { color: var(--brand-light); }

.wrap {
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 20px;
}

/* ---------------------------------------------------------------- header */

header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(7, 8, 12, 0.82);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--stroke);
}

header .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 62px;
}

.wordmark {
    font-weight: 800;
    font-size: 19px;
    letter-spacing: -0.01em;
    color: var(--text);
    text-decoration: none;
}

.wordmark span { color: var(--brand-light); }

header nav {
    display: flex;
    gap: 20px;
    font-size: 15px;
}

header nav a {
    color: var(--text-2);
    text-decoration: none;
}

header nav a:hover { color: var(--text); }

/* ---------------------------------------------------------------- hero */

.hero {
    padding: 84px 0 64px;
    background:
        radial-gradient(900px 460px at 50% -10%, rgba(124, 107, 255, 0.24), transparent 70%),
        var(--bg0);
}

.hero .wrap {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
}

.eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--deep);
    border: 1px solid rgba(255, 197, 61, 0.35);
    background: rgba(255, 197, 61, 0.08);
    border-radius: 999px;
    padding: 5px 13px;
    margin-bottom: 20px;
}

h1 {
    font-size: clamp(34px, 5.6vw, 54px);
    line-height: 1.22;
    letter-spacing: -0.02em;
    margin: 0 0 18px;
    font-weight: 800;
}

h1 em {
    font-style: normal;
    color: var(--deep);
}

.lede {
    font-size: 18px;
    color: var(--text-2);
    margin: 0 0 30px;
}

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border-radius: 14px;
    padding: 14px 24px;
    font-weight: 700;
    font-size: 16px;
    text-decoration: none;
    border: 1px solid transparent;
    transition: transform 0.12s ease, background 0.12s ease;
}

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

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

.btn-primary:hover { background: var(--brand-light); }

.btn-ghost {
    background: transparent;
    border-color: var(--stroke);
    color: var(--text);
}

.btn-ghost:hover { background: var(--bg2); }

.cta-note {
    font-size: 14px;
    color: var(--text-3);
    margin-top: 14px;
}

/* ---------------------------------------------------------------- sections */

section { padding: 72px 0; }

section.alt { background: var(--bg1); }

h2 {
    font-size: clamp(26px, 3.6vw, 34px);
    letter-spacing: -0.02em;
    margin: 0 0 12px;
    font-weight: 800;
}

.section-lede {
    color: var(--text-2);
    font-size: 17px;
    margin: 0 0 40px;
    max-width: 62ch;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}

.card {
    background: var(--bg2);
    border: 1px solid var(--stroke);
    border-radius: var(--radius);
    padding: 24px;
}

.card h3 {
    margin: 0 0 8px;
    font-size: 18px;
    font-weight: 700;
}

.card p {
    margin: 0;
    color: var(--text-2);
    font-size: 15px;
}

.card .mark {
    font-size: 26px;
    line-height: 1;
    margin-bottom: 14px;
    display: block;
}

.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.split img {
    width: 100%;
    max-width: 340px;
    border-radius: var(--radius);
    border: 1px solid var(--stroke);
    display: block;
    margin: 0 auto;
}

ul.checks {
    list-style: none;
    padding: 0;
    margin: 24px 0 0;
}

ul.checks li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 14px;
    color: var(--text-2);
}

ul.checks li::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 10px;
    width: 9px;
    height: 9px;
    border-radius: 3px;
    background: var(--accept);
}

.privacy-band {
    background: linear-gradient(135deg, rgba(53, 224, 138, 0.10), rgba(53, 195, 255, 0.06));
    border: 1px solid rgba(53, 224, 138, 0.28);
    border-radius: var(--radius);
    padding: 30px;
}

.privacy-band h2 { margin-bottom: 10px; }

.price-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    max-width: 720px;
}

.price {
    background: var(--bg2);
    border: 1px solid var(--stroke);
    border-radius: var(--radius);
    padding: 26px;
}

.price.free { border-color: rgba(53, 224, 138, 0.35); }

.price .tag {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.03em;
    color: var(--text-3);
    text-transform: uppercase;
}

.price .amount {
    font-size: 26px;
    font-weight: 800;
    margin: 8px 0 14px;
}

.price ul {
    margin: 0;
    padding-left: 18px;
    color: var(--text-2);
    font-size: 15px;
}

details {
    border-bottom: 1px solid var(--stroke);
    padding: 18px 0;
}

details summary {
    cursor: pointer;
    font-weight: 700;
    font-size: 17px;
    list-style: none;
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

details summary::-webkit-details-marker { display: none; }

details summary::after {
    content: "+";
    color: var(--text-3);
    font-weight: 400;
    font-size: 22px;
    line-height: 1;
}

details[open] summary::after { content: "\2212"; }

details p {
    color: var(--text-2);
    margin: 12px 0 0;
    font-size: 15px;
}

footer {
    border-top: 1px solid var(--stroke);
    padding: 40px 0 56px;
    color: var(--text-3);
    font-size: 14px;
}

footer .links {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    margin-bottom: 16px;
}

footer a { color: var(--text-2); text-decoration: none; }

footer a:hover { color: var(--text); }

/* ---------------------------------------------------------------- legal pages */

.legal { padding: 56px 0 80px; }

.legal h1 { font-size: clamp(28px, 4vw, 38px); }

.legal .updated {
    color: var(--text-3);
    font-size: 14px;
    margin-bottom: 36px;
}

.legal h2 {
    font-size: 21px;
    margin: 40px 0 12px;
    padding-top: 24px;
    border-top: 1px solid var(--stroke);
}

.legal h3 { font-size: 17px; margin: 24px 0 8px; }

.legal p, .legal li { color: var(--text-2); font-size: 16px; }

.legal table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 15px;
}

.legal th, .legal td {
    border: 1px solid var(--stroke);
    padding: 10px 12px;
    text-align: left;
    vertical-align: top;
    color: var(--text-2);
}

.legal th { background: var(--bg2); color: var(--text); font-weight: 700; }

.legal .callout {
    background: var(--bg2);
    border: 1px solid var(--stroke);
    border-left: 3px solid var(--accept);
    border-radius: 10px;
    padding: 18px 20px;
    margin: 24px 0;
}

.legal .callout p { margin: 0; color: var(--text); }

.table-scroll { overflow-x: auto; }

/* ---------------------------------------------------------------- responsive */

@media (max-width: 820px) {
    .hero { padding: 56px 0 48px; }
    .hero .wrap, .split { grid-template-columns: 1fr; gap: 34px; }
    .grid-3, .grid-2, .price-grid { grid-template-columns: 1fr; }
    header nav { display: none; }
    section { padding: 56px 0; }
}