/* Savit — 공통 스타일 */
/* 외부 의존성 0: 시스템 폰트, CDN·웹폰트·JS 없음 */

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

:root {
  --color-bg: #fff;
  --color-text: #1a1a1a;
  --color-text-secondary: #555;
  --color-border: #e0e0e0;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-surface: #f7f7f8;
  --color-badge-bg: #eef2ff;
  --color-badge-text: #3b5998;
  --color-bracket: #b45309;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #111;
    --color-text: #e4e4e7;
    --color-text-secondary: #a1a1aa;
    --color-border: #2a2a2e;
    --color-accent: #60a5fa;
    --color-accent-hover: #93c5fd;
    --color-surface: #1a1a1e;
    --color-badge-bg: #1e293b;
    --color-badge-text: #93c5fd;
    --color-bracket: #fbbf24;
  }
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans KR", "Apple SD Gothic Neo",
    "Malgun Gothic", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.container {
  max-width: 680px;
  margin: 0 auto;
  padding: 2rem 1.25rem;
}

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

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* ── 랜딩 ── */

.hero {
  text-align: center;
  padding: 3rem 0 2rem;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.hero .tagline {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

.hero .description {
  font-size: 1rem;
  color: var(--color-text);
  max-width: 500px;
  margin: 0 auto 2rem;
}

.badge {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.3em 0.9em;
  border-radius: 999px;
  background: var(--color-badge-bg);
  color: var(--color-badge-text);
}

.features {
  list-style: none;
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-border);
}

.features li {
  padding: 1rem 0;
}

.features li + li {
  border-top: 1px solid var(--color-border);
}

.features strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
}

.features span {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* ── 처리방침 ── */

.privacy h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.3;
}

.privacy h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.privacy p {
  margin-bottom: 0.75rem;
}

.privacy ul,
.privacy ol {
  margin-bottom: 0.75rem;
  padding-left: 1.5rem;
}

.privacy li {
  margin-bottom: 0.4rem;
}

.privacy strong {
  font-weight: 600;
}

/* ── 404 ── */

.page-404 {
  text-align: center;
  padding: 5rem 0;
}

.page-404 h1 {
  font-size: 4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.page-404 p {
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

/* ── 공통 푸터 ── */

footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}