:root {
  color-scheme: light;
  --ink: #3a2a33;
  --muted: #806b76;
  --pink: #ff5c8a;
  --pink-dark: #d73f70;
  --pink-soft: #ffe4ed;
  --lavender: #eee7ff;
  --background: #fff7fa;
  --surface: #ffffff;
  --line: #f1dce4;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 10% 0%, rgba(255, 197, 216, .42), transparent 34rem),
    var(--background);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  line-height: 1.75;
}

header, main, footer { width: min(760px, calc(100% - 32px)); margin-inline: auto; }

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 0;
}

.brand { color: var(--ink); font-size: 20px; font-weight: 800; text-decoration: none; }
nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 14px; }
nav a, a { color: var(--pink-dark); }
nav a { font-size: 14px; font-weight: 650; text-decoration: none; }

main {
  margin-bottom: 32px;
  padding: clamp(26px, 6vw, 52px);
  border: 1px solid rgba(255, 92, 138, .09);
  border-radius: 32px;
  background: rgba(255, 255, 255, .94);
  box-shadow: 0 22px 70px rgba(105, 42, 66, .09);
}

.eyebrow { margin: 0 0 8px; color: var(--pink-dark); font-size: 14px; font-weight: 800; letter-spacing: .05em; }
h1 { margin: 0 0 18px; font-size: clamp(30px, 7vw, 48px); line-height: 1.18; letter-spacing: -.04em; }
h2 { margin: 38px 0 10px; font-size: 21px; line-height: 1.4; }
p, li { color: #59454f; }
ul { padding-left: 22px; }
.lead { color: var(--muted); font-size: 18px; }
.hero-mark { display: inline-grid; width: 60px; height: 60px; margin-bottom: 20px; place-items: center; border-radius: 22px; background: var(--pink-soft); color: var(--pink); font-size: 30px; }
.callout { margin: 26px 0; padding: 20px 22px; border-radius: 20px; background: var(--pink-soft); color: var(--ink); }
.lavender { background: var(--lavender); }
.links { display: grid; gap: 12px; margin-top: 30px; }
.links a { padding: 15px 18px; border: 1px solid var(--line); border-radius: 16px; background: white; font-weight: 700; text-decoration: none; }
footer { padding: 10px 0 40px; color: var(--muted); font-size: 14px; text-align: center; }

.auth-action-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px 0;
}

.auth-action-card { margin: 0; text-align: center; }
.auth-action-card .hero-mark { margin-inline: auto; }
.auth-action-card .lead { min-height: 32px; margin-bottom: 24px; }
.auth-action-next { margin: 22px 0; padding: 16px 18px; border-radius: 18px; background: var(--pink-soft); }
.auth-action-next p { margin: 0; }
.auth-action-home { display: inline-block; margin-top: 12px; color: var(--pink-dark); font-weight: 800; }

.auth-action-form { display: grid; gap: 10px; margin: 24px auto; text-align: left; }
.auth-action-form label { color: var(--ink); font-size: 14px; font-weight: 750; }
.auth-action-form input {
  width: 100%;
  height: 52px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: white;
  color: var(--ink);
  font: inherit;
}
.auth-action-form input:focus { border-color: var(--pink); outline: 3px solid rgba(255, 92, 138, .15); }
.auth-action-form button {
  height: 52px;
  margin-top: 8px;
  border: 0;
  border-radius: 15px;
  background: var(--pink);
  color: white;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.advertise-page { width: min(900px, calc(100% - 32px)); }
.ad-principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 28px 0 38px; }
.ad-principles article { display: grid; gap: 7px; padding: 18px; border: 1px solid var(--line); border-radius: 18px; background: var(--background); }
.ad-principles strong { color: var(--ink); }
.ad-principles span { color: var(--muted); font-size: 14px; line-height: 1.55; }
.advertiser-form { display: grid; gap: 22px; }
.form-section { display: grid; gap: 14px; padding: 22px; border: 1px solid var(--line); border-radius: 22px; background: #fff; }
.form-section h2 { margin: 0 0 4px; }
.form-grid { display: grid; gap: 14px; }
.two-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.advertiser-form label, .advertiser-form legend { color: var(--ink); font-size: 14px; font-weight: 750; }
.advertiser-form input:not([type="checkbox"]), .advertiser-form select, .advertiser-form textarea {
  display: block; width: 100%; margin-top: 6px; padding: 13px 14px; border: 1px solid var(--line); border-radius: 14px;
  background: white; color: var(--ink); font: inherit;
}
.advertiser-form input:not([type="checkbox"]), .advertiser-form select { min-height: 50px; }
.advertiser-form textarea { resize: vertical; line-height: 1.55; }
.advertiser-form input:focus, .advertiser-form select:focus, .advertiser-form textarea:focus { border-color: var(--pink); outline: 3px solid rgba(255, 92, 138, .15); }
.field-hint { color: var(--muted); font-size: 12px; font-weight: 500; }
.advertiser-form fieldset { margin: 0; padding: 0; border: 0; }
.check-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 8px; }
.check-option { display: flex; gap: 10px; align-items: flex-start; padding: 15px; border: 1px solid var(--line); border-radius: 16px; cursor: pointer; }
.check-option input, .policy-check input { width: 20px; height: 20px; accent-color: var(--pink); flex: 0 0 auto; }
.check-option span { display: grid; gap: 2px; }
.check-option small { color: var(--muted); font-weight: 500; }
.creative-preview { overflow: hidden; border-radius: 18px; background: var(--pink-soft); }
.creative-preview img { display: block; width: 100%; max-height: 300px; object-fit: cover; }
.policy-check { display: flex; align-items: flex-start; gap: 10px; padding: 18px; border-radius: 18px; background: var(--pink-soft); }
.submission-note { margin: -8px 0 0; color: var(--muted); font-size: 13px; }
.form-submit { min-height: 56px; border: 0; border-radius: 17px; background: linear-gradient(135deg, #ff75a0, var(--pink)); color: white; font: inherit; font-weight: 850; cursor: pointer; box-shadow: 0 12px 28px rgba(215, 63, 112, .20); }
.form-submit:disabled { opacity: .58; cursor: wait; }
.form-status { padding: 17px 18px; border-radius: 16px; font-weight: 700; }
.form-status.success { color: #176b50; background: #e6f8f1; }
.form-status.error { color: #a62f55; background: var(--pink-soft); }
.honeypot { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

@media (max-width: 620px) {
  header { align-items: flex-start; flex-direction: column; }
  nav { justify-content: flex-start; }
  main { width: 100%; margin: 0; border: 0; border-radius: 0; box-shadow: none; }
  .auth-action-page { display: block; padding: 0; }
  .auth-action-card { min-height: 100vh; padding-top: 72px; }
  .advertise-page { width: 100%; }
  .ad-principles, .two-columns, .check-grid { grid-template-columns: 1fr; }
  .form-section { padding: 18px; }
}

.analytics-choice { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px 18px; }
.analytics-choice p { margin: 0; }
.analytics-toggle { min-height: 44px; padding: 0 18px; border: 1px solid #d9c6d0; border-radius: 12px; background: white; color: var(--ink); font: inherit; font-weight: 750; cursor: pointer; }
.analytics-toggle[aria-pressed="true"] { border-color: transparent; background: var(--pink); color: white; }
.analytics-toggle:disabled { opacity: .6; cursor: not-allowed; }