/* flipfreak.jp 広告審査用ランディング 共通スタイル */

:root {
  --primary: #E8570A;
  --primary-light: #FF6B1A;
  --primary-pale: #FFF0E8;
  --dark: #111;
  --body: #1E1E1E;
  --mid: #333;
  --gray: #666;
  --light-gray: #AAA;
  --border: #E0DBD3;
  --bg: #FFFFFF;
  --bg-alt: #F6F4F1;
  --font: "Noto Sans JP", "Yu Gothic", "游ゴシック", "YuGothic", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--body);
  font-family: var(--font);
  font-weight: 500;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* ===== Header ===== */
.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.site-logo {
  font-size: 20px;
  font-weight: 900;
  color: var(--dark);
  letter-spacing: -0.02em;
}

.site-logo span {
  color: var(--primary);
}

.site-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
  font-weight: 700;
}

.site-nav a {
  color: var(--mid);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 24px 0;
  font-size: 12px;
  color: var(--light-gray);
  font-weight: 500;
}

.breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0 4px;
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
}

.breadcrumb li + li::before {
  content: "›";
  margin: 0 8px;
  color: var(--light-gray);
}

.breadcrumb [aria-current="page"] {
  color: var(--light-gray);
}

.breadcrumb a {
  color: var(--gray);
}

/* ===== Main container ===== */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

.container h1 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 900;
  color: var(--dark);
  letter-spacing: -0.02em;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--primary);
}

.container h2 {
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--dark);
  margin: 40px 0 14px;
  padding-left: 14px;
  border-left: 3px solid var(--primary);
}

.container h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--mid);
  margin: 24px 0 10px;
}

.container p, .container li {
  font-size: 0.92rem;
  line-height: 2;
  color: var(--mid);
}

.container p {
  margin-bottom: 12px;
}

.container ul, .container ol {
  margin: 12px 0 12px 1.5em;
}

.container ul li, .container ol li {
  margin-bottom: 4px;
}

.container dl {
  margin: 16px 0;
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 12px 24px;
  font-size: 0.92rem;
}

.container dt {
  font-weight: 700;
  color: var(--dark);
}

.container dd {
  color: var(--mid);
}

/* ===== Utilities ===== */
.u-text-center { text-align: center; }
.u-dl-compact { max-width: 560px; margin: 0 auto; }
.u-mt-24 { margin-top: 24px; }
.u-mt-32 { margin-top: 32px; }

@media (max-width: 640px) {
  .container dl {
    grid-template-columns: 1fr;
    gap: 4px 0;
  }
  .container dt {
    margin-top: 12px;
  }
}

.container .update {
  font-size: 0.8rem;
  color: var(--gray);
  text-align: right;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

/* ===== Hero (for landing) ===== */
.hero {
  background: linear-gradient(180deg, var(--primary-pale) 0%, var(--bg) 100%);
  padding: 80px 24px 60px;
  text-align: center;
}

.hero-inner {
  max-width: 720px;
  margin: 0 auto;
}

.hero .tag {
  display: inline-block;
  background: var(--primary);
  color: var(--bg);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900;
  color: var(--dark);
  letter-spacing: -0.03em;
  line-height: 1.3;
  margin-bottom: 20px;
}

.hero .sub {
  font-size: clamp(0.95rem, 1.8vw, 1.1rem);
  color: var(--mid);
  line-height: 1.9;
  font-weight: 500;
}

/* ===== Section (for landing) ===== */
.section {
  padding: 60px 24px;
}

.section-inner {
  max-width: 960px;
  margin: 0 auto;
}

.section h2 {
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 900;
  color: var(--dark);
  letter-spacing: -0.02em;
  text-align: center;
  margin-bottom: 12px;
}

.section .lead {
  font-size: 0.95rem;
  color: var(--gray);
  text-align: center;
  margin-bottom: 40px;
  line-height: 1.9;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.card h3 {
  font-size: 1rem;
  font-weight: 900;
  color: var(--dark);
  margin-bottom: 10px;
}

.card p {
  font-size: 0.85rem;
  color: var(--gray);
  line-height: 1.8;
}

/* ===== Section alt ===== */
.section-alt {
  background: var(--bg-alt);
}

/* ===== Footer ===== */
.site-footer {
  background: #0E0E0E;
  color: rgba(255, 255, 255, 0.6);
  padding: 32px 24px;
  font-size: 12px;
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo {
  font-weight: 900;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
}

.footer-logo span {
  color: var(--primary);
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 12px;
}

.footer-links a:hover {
  color: var(--primary-light);
  text-decoration: underline;
}

.footer-copy {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.6);
  width: 100%;
  text-align: center;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 4px;
}