/* 공개 페이지(서비스 소개, 수수료 계산기). 색 값은 theme.css, auth.css와 같은 토큰을 쓴다. */
:root {
  color-scheme: light;
  --p: #7757FF; --p-hover: #6A4BF0; --on: #FFFFFF; --link: #6547E8;
  --accent: #00C2FF; --navy: #0F1B3D; --grad: linear-gradient(135deg, #7B5CFF, #00C2FF);
  --bg: #F4F6FA; --sf: #FFFFFF; --sf-2: #EDE9FF; --fill: #F1F3F9;
  --tx: #0F1B3D; --tx-2: #27345A; --mt: #4C5875; --bd: #E4E8F2; --bd-2: #C9D1E0;
  --pos: #0B6B45; --neg: #BE1E3D;
  --hero-bg: #0F1B3D; --hero-tx: #FFFFFF; --hero-mt: #C7D0E4; --chip: rgba(255, 255, 255, .1);
  --r-card: 12px; --r-btn: 10px;
  --shadow: 0 1px 2px rgba(15, 27, 61, .04), 0 2px 8px rgba(15, 27, 61, .04);
  --font: Inter, "Pretendard Variable", Pretendard, system-ui, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --link: #B3A4FF; --bg: #0A1226; --sf: #0F1B3D; --sf-2: #2A2752; --fill: #18264C;
    --tx: #F3F6FB; --tx-2: #D9E0EC; --mt: #B9C5D8; --bd: #26365F; --bd-2: #3C4F7D;
    --pos: #5FDCA8; --neg: #FF9AAB; --hero-bg: #070D1C;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3);
  }
  :root:not([data-theme="light"]) .lg-day { display: none; }
  :root:not([data-theme="light"]) .lg-night { display: block; }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --link: #B3A4FF; --bg: #0A1226; --sf: #0F1B3D; --sf-2: #2A2752; --fill: #18264C;
  --tx: #F3F6FB; --tx-2: #D9E0EC; --mt: #B9C5D8; --bd: #26365F; --bd-2: #3C4F7D;
  --pos: #5FDCA8; --neg: #FF9AAB; --hero-bg: #070D1C;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3);
}
:root[data-theme="dark"] .lg-day { display: none; }
:root[data-theme="dark"] .lg-night { display: block; }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--tx); font: 400 16px/1.65 var(--font); word-break: keep-all; overflow-wrap: anywhere; }
a { color: var(--link); }
img { max-width: 100%; }
h1, h2, h3 { margin: 0 0 12px; line-height: 1.3; letter-spacing: -.01em; }
h1 { font-size: clamp(30px, 5vw, 48px); font-weight: 800; }
h2 { font-size: clamp(22px, 3vw, 28px); font-weight: 700; }
h3, .h3 { font-size: 18px; font-weight: 700; }
p { margin: 0 0 12px; }
.wrap { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 800px; }
.skip { position: absolute; left: -9999px; top: 8px; background: var(--sf); padding: 8px 12px; border-radius: var(--r-btn); z-index: 10; }
.skip:focus { left: 8px; }
:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }

/* 머리글 */
.top { position: sticky; top: 0; z-index: 5; background: var(--sf); border-bottom: 1px solid var(--bd); }
.top-in { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }
.brand { display: flex; flex: none; }
.brand img { display: block; height: 28px; width: auto; }
.lg-night { display: none !important; }
:root[data-theme="dark"] .lg-night { display: block !important; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .lg-night { display: block !important; } }
.top-nav { display: flex; align-items: center; gap: 20px; font-size: 15px; font-weight: 600; }
.top-nav a:not(.btn) { color: var(--tx-2); text-decoration: none; }
.top-nav a:not(.btn):hover { color: var(--link); }

/* 버튼 */
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border-radius: var(--r-btn); background: var(--p); color: var(--on); font-weight: 600; text-decoration: none; border: 1px solid var(--p); }
.btn:hover { background: var(--p-hover); border-color: var(--p-hover); }
.btn-sm { min-height: 40px; padding: 0 16px; font-size: 14px; }
.btn-ghost { background: transparent; color: var(--hero-tx); border-color: rgba(255, 255, 255, .5); }
.btn-ghost:hover { background: rgba(255, 255, 255, .1); border-color: #FFFFFF; }

/* 첫 화면 */
.hero { position: relative; overflow: hidden; background: var(--hero-bg); color: var(--hero-tx); padding: 96px 0 80px; }
.hero::after { content: ""; position: absolute; right: -160px; top: -160px; width: 520px; height: 520px; border-radius: 50%; background: var(--grad); opacity: .28; filter: blur(40px); pointer-events: none; }
.hero .wrap { position: relative; z-index: 1; }
.eyebrow { display: inline-block; margin-bottom: 16px; padding: 4px 12px; border-radius: 999px; background: var(--chip); color: var(--hero-mt); font-size: 14px; font-weight: 600; }
.lead { max-width: 640px; font-size: 18px; color: var(--mt); }
.hero .lead { color: var(--hero-mt); }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 32px 0 40px; }
.markets { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.markets li { padding: 4px 12px; border: 1px solid rgba(255, 255, 255, .24); border-radius: 999px; color: var(--hero-mt); font-size: 14px; }

/* 구역 */
.sec { padding: 72px 0; }
.sec-alt { background: var(--sf); border-top: 1px solid var(--bd); border-bottom: 1px solid var(--bd); }
.sec-lead { color: var(--mt); margin-bottom: 32px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 0; padding: 0; list-style: none; }
.card { background: var(--sf); border: 1px solid var(--bd); border-radius: var(--r-card); padding: 24px; box-shadow: var(--shadow); }
.sec-alt .card { background: var(--bg); }
.card p { color: var(--mt); margin: 0; }
.grid .card h3::before { content: ""; display: block; width: 32px; height: 4px; margin-bottom: 16px; border-radius: 2px; background: var(--grad); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 24px 0 0; padding: 0; list-style: none; counter-reset: step; }
.steps li { counter-increment: step; display: flex; flex-direction: column; gap: 4px; padding: 20px; border: 1px solid var(--bd); border-radius: var(--r-card); background: var(--bg); }
.steps li::before { content: counter(step); display: grid; place-items: center; width: 32px; height: 32px; margin-bottom: 8px; border-radius: 50%; background: var(--sf-2); color: var(--link); font-weight: 700; }
.steps span { color: var(--mt); font-size: 15px; }
.tool-cta { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.tool-cta p { color: var(--mt); margin: 0; max-width: 680px; }
.tool-cta .btn { flex: none; }
.faq details { border-bottom: 1px solid var(--bd); padding: 16px 0; }
.faq summary { cursor: pointer; font-weight: 600; list-style-position: outside; }
.faq details p { margin: 12px 0 0; color: var(--mt); }

/* 계산기 */
.crumbs { padding: 24px 0 0; font-size: 14px; color: var(--mt); }
.crumbs a { color: var(--mt); }
.page-head { padding: 16px 0 24px; }
.page-head h1 { font-size: clamp(28px, 4vw, 40px); }
.calc { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.calc-out { position: sticky; top: 80px; }
.f { margin: 0 0 16px; padding: 0; border: 0; min-width: 0; }
.f label:not(.check), .f legend { display: block; margin-bottom: 4px; font-size: 14px; font-weight: 600; }
.f input:not([type="checkbox"]):not([type="radio"]), .f select { display: block; width: 100%; height: 44px; padding: 0 12px; border: 1px solid var(--bd-2); border-radius: var(--r-btn); background: var(--sf); color: var(--tx); font: inherit; font-size: 16px; }
.f input:focus, .f select:focus { outline: 0; border-color: var(--p); box-shadow: 0 0 0 3px var(--sf-2); }
.check { display: flex; align-items: center; gap: 8px; margin: 4px 0; font-size: 15px; cursor: pointer; }
.check input { width: 18px; height: 18px; margin: 0; accent-color: var(--p); }
.hint { margin: 4px 0 0; color: var(--mt); font-size: 13px; line-height: 1.5; }
.cur { color: var(--mt); font-weight: 500; font-size: 13px; }
.rows { margin: 0 0 12px; }
.rows div { display: flex; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--bd); }
.rows dt { color: var(--mt); }
.rows dd { margin: 0; font-weight: 600; font-variant-numeric: tabular-nums; text-align: right; }
.rows .total dt { color: var(--tx); font-weight: 700; }
.rows .total dd { font-size: 20px; font-weight: 800; }
#r-profit[data-sign="pos"] { color: var(--pos); }
#r-profit[data-sign="neg"] { color: var(--neg); }
.note { margin: 12px 0 0; padding: 12px; border-radius: var(--r-btn); background: var(--fill); color: var(--mt); font-size: 13px; line-height: 1.55; }
.sec-in { padding: 48px 0 0; }
.sec-in:last-child { padding-bottom: 72px; }
.table-wrap { overflow-x: auto; border: 1px solid var(--bd); border-radius: var(--r-card); background: var(--sf); }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
caption { padding: 12px 16px; text-align: left; color: var(--mt); font-size: 14px; }
th, td { padding: 12px 16px; border-top: 1px solid var(--bd); text-align: left; }
thead th { background: var(--fill); font-size: 14px; }
tbody td { font-weight: 600; }
.src { margin-top: 12px; color: var(--mt); font-size: 14px; }
.formula { padding-left: 20px; }
.formula li { margin-bottom: 8px; }
.example { margin-top: 24px; }
.example ul { color: var(--mt); padding-left: 20px; }

/* 바닥글 */
.foot { padding: 40px 0 56px; border-top: 1px solid var(--bd); color: var(--mt); font-size: 14px; }
.foot-brand { color: var(--tx); font-weight: 700; }

@media (max-width: 960px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .calc { grid-template-columns: 1fr; }
  .calc-out { position: static; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .top-nav { gap: 12px; font-size: 14px; }
  .top-nav a[href^="/tools"] { display: none; }
  .brand img { height: 24px; }
  .hero { padding: 64px 0 56px; }
  .lead { font-size: 16px; }
  .sec { padding: 48px 0; }
  .grid, .steps { grid-template-columns: 1fr; }
  .tool-cta { flex-direction: column; align-items: flex-start; }
  .card { padding: 20px; }
  th, td { padding: 10px 12px; }
}