/* ============================================================
   ファクタリング比較サイト - グローバルスタイル
   ============================================================ */

/* --- CSS Variables --- */
:root {
  --color-primary: #1A3A5C;
  --color-primary-dark: #122a44;
  --color-primary-light: #2a5a8c;
  --color-accent: #0D9488;
  --color-accent-dark: #0a7a70;
  --color-cta: #F59E0B;
  --color-cta-dark: #d97706;
  --color-bg: #F8FAFC;
  --color-surface: #FFFFFF;
  --color-text: #1E293B;
  --color-text-muted: #64748B;
  --color-border: #E2E8F0;
  --color-success: #16A34A;
  --color-warning: #D97706;
  --color-danger: #DC2626;
  --color-rank-gold: #F59E0B;
  --color-rank-silver: #94A3B8;
  --color-rank-bronze: #CD7F32;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --shadow-xl: 0 16px 40px rgba(0,0,0,0.14);

  --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;

  --container-max: 1100px;
  --container-pad: 1.25rem;

  --transition: 0.2s ease;
  --transition-slow: 0.35s ease;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

ul, ol {
  list-style: none;
}

/* --- Layout --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.section {
  padding: 5rem 0;
}

.section--gray {
  background: var(--color-bg);
}

.section--white {
  background: var(--color-surface);
}

.section--primary {
  background: var(--color-primary);
  color: white;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.02em;
}

.section-title {
  font-size: var(--font-size-3xl);
  color: var(--color-primary);
  text-align: center;
  margin-bottom: 0.5rem;
}

.section-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: 3rem;
}

.page-title {
  font-size: var(--font-size-4xl);
  color: var(--color-primary);
  margin-bottom: 1rem;
}

/* --- Affiliate Disclosure Bar --- */
.disclosure-bar {
  background: #FEF3C7;
  border-bottom: 1px solid #FCD34D;
  text-align: center;
  padding: 0.4rem 1rem;
  font-size: var(--font-size-xs);
  color: #92400E;
  font-weight: 500;
}

/* --- Header --- */
.site-header {
  background: var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-md);
  transition: padding var(--transition);
}

.site-header.scrolled {
  padding: 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem var(--container-pad);
  max-width: var(--container-max);
  margin: 0 auto;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.site-logo__icon {
  width: 36px;
  height: 36px;
  background: var(--color-cta);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--color-primary);
}

.site-logo__text {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: white;
  line-height: 1.2;
}

.site-logo__sub {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.7);
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.site-nav a {
  color: rgba(255,255,255,0.85);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition);
}

.site-nav a:hover {
  color: white;
}

.header-cta {
  background: var(--color-cta) !important;
  color: var(--color-primary) !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-weight: 700 !important;
  font-size: var(--font-size-sm) !important;
  transition: background var(--transition), transform var(--transition) !important;
}

.header-cta:hover {
  background: var(--color-cta-dark) !important;
  transform: translateY(-1px);
}

/* Hamburger menu */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: white;
  border-radius: 2px;
  transition: var(--transition);
}

/* Mobile nav */
.mobile-nav {
  display: none;
  background: var(--color-primary-dark);
  border-top: 1px solid rgba(255,255,255,0.1);
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav a {
  display: block;
  padding: 0.875rem var(--container-pad);
  color: rgba(255,255,255,0.85);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: background var(--transition);
}

.mobile-nav a:hover {
  background: rgba(255,255,255,0.05);
  color: white;
}

.mobile-nav .header-cta {
  margin: 0.75rem var(--container-pad);
  display: inline-block;
  border-radius: var(--radius-md);
  padding: 0.75rem 1.5rem !important;
  width: calc(100% - 2 * var(--container-pad));
  text-align: center;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: 700;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
}

.btn--primary {
  background: var(--color-primary);
  color: white;
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  color: white;
}

.btn--accent {
  background: var(--color-accent);
  color: white;
}

.btn--accent:hover {
  background: var(--color-accent-dark);
  color: white;
}

.btn--cta {
  background: var(--color-cta);
  color: var(--color-primary);
  font-size: var(--font-size-lg);
  padding: 1rem 2.5rem;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 15px rgba(245,158,11,0.4);
}

.btn--cta:hover {
  background: var(--color-cta-dark);
  color: var(--color-primary);
  box-shadow: 0 6px 20px rgba(245,158,11,0.5);
}

.btn--cta-sm {
  background: var(--color-cta);
  color: var(--color-primary);
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  box-shadow: 0 2px 8px rgba(245,158,11,0.3);
}

.btn--cta-sm:hover {
  background: var(--color-cta-dark);
  color: var(--color-primary);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: white;
}

.btn--outline-white {
  background: transparent;
  color: white;
  border: 2px solid white;
}

.btn--outline-white:hover {
  background: white;
  color: var(--color-primary);
}

.btn--lg {
  font-size: var(--font-size-xl);
  padding: 1.125rem 3rem;
}

.btn--full {
  width: 100%;
}

/* --- Hero --- */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 60%, var(--color-accent) 100%);
  padding: 5rem 0 6rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: rgba(255,255,255,0.03);
  border-radius: 50%;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  padding: 0 var(--container-pad);
}

.hero__badge {
  display: inline-block;
  background: rgba(245,158,11,0.2);
  color: var(--color-cta);
  border: 1px solid rgba(245,158,11,0.4);
  border-radius: var(--radius-full);
  padding: 0.35rem 1rem;
  font-size: var(--font-size-sm);
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.hero__title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  color: white;
  margin-bottom: 1.25rem;
  line-height: 1.3;
}

.hero__title em {
  color: var(--color-cta);
  font-style: normal;
}

.hero__description {
  font-size: var(--font-size-lg);
  color: rgba(255,255,255,0.85);
  margin-bottom: 2.5rem;
  line-height: 1.9;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Trust Bar --- */
.trust-bar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 1.5rem 0;
}

.trust-bar__inner {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.trust-item {
  text-align: center;
}

.trust-item__number {
  font-size: var(--font-size-2xl);
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
}

.trust-item__number span {
  color: var(--color-accent);
}

.trust-item__label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* --- Breadcrumb --- */
.breadcrumb {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.breadcrumb__list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.breadcrumb__list li::after {
  content: '›';
  margin-left: 0.25rem;
}

.breadcrumb__list li:last-child::after {
  content: '';
}

.breadcrumb__list a {
  color: var(--color-text-muted);
}

.breadcrumb__list a:hover {
  color: var(--color-primary);
}

/* --- Footer --- */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.75);
  padding: 3.5rem 0 2rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-brand .site-logo__text {
  font-size: var(--font-size-base);
}

.footer-desc {
  font-size: var(--font-size-sm);
  line-height: 1.8;
  margin-top: 1rem;
  color: rgba(255,255,255,0.6);
}

.footer-nav h4 {
  color: white;
  font-size: var(--font-size-sm);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-nav a {
  color: rgba(255,255,255,0.65);
  font-size: var(--font-size-sm);
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-disclaimer {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.5);
  max-width: 700px;
  line-height: 1.7;
}

.footer-copyright {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.4);
}

/* --- Back to Top --- */
#back-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 999;
  font-size: 1.2rem;
}

#back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

#back-to-top:hover {
  transform: translateY(-3px);
  background: var(--color-primary-light);
}

/* --- Mobile Float CTA --- */
.float-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-primary);
  padding: 0.75rem 1rem;
  z-index: 998;
  box-shadow: 0 -4px 16px rgba(0,0,0,0.15);
}

.float-cta a {
  display: block;
  background: var(--color-cta);
  color: var(--color-primary);
  text-align: center;
  padding: 0.875rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: var(--font-size-base);
}

/* --- Page Header --- */
.page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  padding: 3rem 0;
  color: white;
}

.page-header h1 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  color: white;
  margin-bottom: 0.5rem;
}

.page-header p {
  color: rgba(255,255,255,0.8);
  font-size: var(--font-size-lg);
}

/* --- Utilities --- */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.font-bold { font-weight: 700; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.hidden { display: none !important; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --container-pad: 1rem;
  }

  .section {
    padding: 3.5rem 0;
  }

  .section-title {
    font-size: var(--font-size-2xl);
  }

  .site-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding: 3.5rem 0 4.5rem;
  }

  .hero__title {
    font-size: 1.75rem;
  }

  .trust-bar__inner {
    gap: 1.5rem;
  }

  .trust-item__number {
    font-size: var(--font-size-xl);
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .float-cta {
    display: block;
  }

  body {
    padding-bottom: 80px;
  }

  #back-to-top {
    bottom: 90px;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .btn--cta {
    width: 100%;
  }
}

/* --- Footer Policy Links --- */
.footer-policy-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 0.75rem 0;
  border-top: 1px solid rgba(255,255,255,0.12);
  border-bottom: 1px solid rgba(255,255,255,0.12);
  margin: 0.75rem 0;
}

.footer-policy-links a {
  color: rgba(255,255,255,0.6);
  font-size: var(--font-size-xs);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-policy-links a:hover {
  color: white;
}

/* --- AdSense Ad Units --- */
.ad-unit {
  margin: 2rem auto;
  text-align: center;
  max-width: 100%;
  overflow: hidden;
}

.ad-unit--sidebar {
  margin: 1.5rem 0;
}

.ad-unit--in-content {
  margin: 2.5rem auto;
  padding: 1rem 0;
  border-top: 1px dashed var(--color-border);
  border-bottom: 1px dashed var(--color-border);
}

.ad-label {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  text-align: center;
  display: block;
  margin-bottom: 0.25rem;
  letter-spacing: 0.08em;
}

/* --- Page speed: prefers-reduced-motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}