:root {
    --lg-bg: #f7f8fa;
    --lg-card: #ffffff;
    --lg-line: #e5e7eb;
    --lg-ink: #111827;
    --lg-ink-2: #6b7280;
    --lg-ink-3: #9ca3af;
    --lg-field: #f6f7f9;
    --lg-field-line: #e3e6ea;
    --lg-accent: #4285f4;
    --lg-accent-hover: #3474e0;
    --lg-bad: #d93025;
    --lg-bad-soft: #fdecea;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
    background: var(--lg-bg);
    color: var(--lg-ink);
    font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", system-ui, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    word-break: keep-all;
}
.lg-wrap { display: flex; justify-content: center; padding: 90px 16px 48px; }
.lg-card {
    width: 100%; max-width: 400px;
    background: var(--lg-card);
    border: 1px solid var(--lg-line);
    border-radius: 16px;
    padding: 40px 32px 36px;
}
.lg-title { margin: 0; text-align: center; font-size: 22px; font-weight: 700; letter-spacing: -.01em; }
.lg-sub { margin: 14px 0 0; text-align: center; font-size: 14px; color: var(--lg-ink-2); text-transform: uppercase; letter-spacing: .02em; }
.lg-form { margin-top: 32px; }
.lg-sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.lg-field { margin-bottom: 12px; }
.lg-input {
    display: block; width: 100%; height: 50px;
    padding: 0 16px;
    font: inherit; font-size: 15px; color: var(--lg-ink);
    background: var(--lg-field);
    border: 1px solid var(--lg-field-line);
    border-radius: 12px;
    outline: none;
    transition: border-color .15s, box-shadow .15s, background .15s;
}
.lg-input::placeholder { color: var(--lg-ink-3); }
.lg-input:focus { background: #fff; border-color: var(--lg-accent); box-shadow: 0 0 0 3px rgba(66, 133, 244, .16); }
.lg-remember { display: flex; gap: 10px; align-items: flex-start; margin: 18px 0 0; cursor: pointer; }
.lg-remember input {
    flex: 0 0 auto; width: 18px; height: 18px; margin: 1px 0 0;
    appearance: none; -webkit-appearance: none;
    border: 1.5px solid #4b5563; border-radius: 4px; background: #fff; cursor: pointer;
    display: grid; place-items: center;
}
.lg-remember input::after { content: ""; width: 10px; height: 6px; border: solid #fff; border-width: 0 0 2px 2px; transform: rotate(-45deg) translate(1px, -1px); opacity: 0; }
.lg-remember input:checked { background: var(--lg-accent); border-color: var(--lg-accent); }
.lg-remember input:checked::after { opacity: 1; }
.lg-remember input:focus-visible { outline: 3px solid rgba(66, 133, 244, .35); outline-offset: 2px; }
.lg-remember b { display: block; font-size: 14px; font-weight: 700; }
.lg-remember small { display: block; margin-top: 4px; font-size: 12.5px; color: var(--lg-ink-2); }
.lg-btn {
    display: block; width: 100%; height: 48px; margin-top: 24px;
    font: inherit; font-size: 15px; font-weight: 700; color: #fff;
    background: var(--lg-accent); border: 0; border-radius: 12px; cursor: pointer;
    transition: background .15s;
}
.lg-btn:hover { background: var(--lg-accent-hover); }
.lg-btn:focus-visible { outline: 3px solid rgba(66, 133, 244, .4); outline-offset: 2px; }
.lg-error { margin: 24px 0 -8px; padding: 10px 14px; font-size: 13.5px; color: var(--lg-bad); background: var(--lg-bad-soft); border-radius: 10px; }
.lg-foot { margin: 22px 0 0; text-align: center; font-size: 13.5px; color: var(--lg-ink-2); }
.lg-foot a { color: var(--lg-accent); font-weight: 700; text-decoration: none; }
.lg-foot a:hover { text-decoration: underline; }
@media (max-width: 480px) {
    .lg-wrap { padding: 40px 16px; }
    .lg-card { padding: 32px 20px 28px; }
}