/* ================================
   Marriage Design Osaka LP
   ================================ */

:root {
  --color-navy: #1a2744;
  --color-navy-light: #24365a;
  --color-gold: #bfa05f;
  --color-gold-dark: #9a7f48;
  --color-white: #ffffff;
  --color-black: #1a1a1a;
  --color-gray: #666666;
  --color-gray-light: #f5f5f3;
  --color-gray-border: #e0e0dc;
  --font-serif: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', serif;
  --font-sans: 'Noto Sans JP', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
  --shadow-sm: 0 2px 8px rgba(26, 39, 68, 0.06);
  --shadow-md: 0 8px 30px rgba(26, 39, 68, 0.1);
  --shadow-lg: 0 20px 60px rgba(26, 39, 68, 0.12);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --transition: 0.3s ease;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--color-black);
  background: var(--color-white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ================================
   Header
   ================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(26, 39, 68, 0.06);
  transition: var(--transition);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1400px;
  margin: 0 auto;
  padding: 16px 40px;
}

.header__logo {
  display: flex;
  flex-direction: column;
}

.header__logo-en {
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--color-gold);
  font-weight: 500;
  text-transform: uppercase;
}

.header__logo-ja {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-navy);
  letter-spacing: 0.05em;
  line-height: 1.4;
}

.header__nav-list {
  display: flex;
  gap: 32px;
}

.header__nav-list a {
  font-size: 0.875rem;
  color: var(--color-navy);
  font-weight: 500;
  position: relative;
  padding-bottom: 4px;
}

.header__nav-list a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-gold);
  transition: var(--transition);
}

.header__nav-list a:hover::after {
  width: 100%;
}

.header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  background: var(--color-gold);
  color: var(--color-white);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 100px;
  transition: var(--transition);
}

.header__cta:hover {
  background: var(--color-gold-dark);
}

.header__menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
}

.header__menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-navy);
  transition: var(--transition);
}

/* ================================
   Hero
   ================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__image {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(245, 245, 243, 0.85) 0%, rgba(245, 245, 243, 0.6) 45%, rgba(245, 245, 243, 0.15) 70%, transparent 100%);
}

.hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 160px 40px 100px;
}

.hero__tag {
  display: inline-block;
  font-size: 0.95rem;
  color: var(--color-gold-dark);
  font-weight: 500;
  letter-spacing: 0.08em;
  margin-bottom: 24px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-gold);
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  font-weight: 600;
  color: var(--color-navy);
  line-height: 1.3;
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}

.hero__title-line {
  display: block;
}

.hero__subtitle {
  font-size: 1rem;
  letter-spacing: 0.2em;
  color: var(--color-gold-dark);
  font-weight: 500;
  margin-bottom: 28px;
}

.hero__desc {
  font-size: 1.05rem;
  color: var(--color-gray);
  line-height: 1.9;
  margin-bottom: 40px;
  max-width: 480px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  margin-bottom: 64px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 18px 36px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  flex-shrink: 0;
}

.btn__arrow {
  transition: transform var(--transition);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

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

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

.btn--secondary {
  background: transparent;
  color: var(--color-navy);
  border: 1px solid var(--color-navy);
}

.btn--secondary:hover {
  background: var(--color-navy);
  color: var(--color-white);
}

.btn--large {
  padding: 22px 48px;
  font-size: 1.05rem;
}

.hero__trust {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}

.hero__trust li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  max-width: 220px;
}

.hero__trust svg {
  width: 32px;
  height: 32px;
  fill: none;
  stroke: var(--color-gold);
  stroke-width: 1.5;
  flex-shrink: 0;
}

.hero__trust strong {
  display: block;
  font-size: 0.85rem;
  color: var(--color-navy);
  font-weight: 700;
  margin-bottom: 2px;
}

.hero__trust span {
  font-size: 0.78rem;
  color: var(--color-gray);
  line-height: 1.5;
}

/* ================================
   Section common
   ================================ */

.section {
  padding: 120px 0;
}

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

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

.section__num {
  font-size: 0.8rem;
  color: var(--color-gold-dark);
  font-weight: 500;
  letter-spacing: 0.15em;
  margin-bottom: 16px;
}

.section__num span {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  margin-right: 12px;
  color: var(--color-gold);
}

.section__num--light {
  color: rgba(255, 255, 255, 0.6);
}

.section__num--light span {
  color: var(--color-gold);
}

.section__title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 600;
  color: var(--color-navy);
  line-height: 1.4;
  letter-spacing: 0.04em;
  margin-bottom: 24px;
}

.section__title--light {
  color: var(--color-white);
}

.section__title--center {
  text-align: center;
}

.section__bar {
  width: 60px;
  height: 1px;
  background: var(--color-gold);
  margin: 28px 0;
}

.section__lead {
  text-align: center;
  color: var(--color-gray);
  max-width: 640px;
  margin: -8px auto 64px;
  font-size: 1rem;
}

.section--navy .section__lead {
  color: rgba(255, 255, 255, 0.7);
}

/* ================================
   Concept
   ================================ */

.concept__grid {
  display: grid;
  grid-template-columns: 1fr 1.85fr;
  gap: 60px;
  align-items: start;
}

.concept__text {
  position: sticky;
  top: 140px;
}

.concept__lead {
  font-size: 1.05rem;
  color: var(--color-gray);
  line-height: 2;
}

.concept__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.concept-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-border);
  padding: 40px 18px;
  text-align: center;
  transition: var(--transition);
}

.concept-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.concept-card__icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}

.concept-card__icon svg {
  width: 32px;
  height: 32px;
  fill: none;
  stroke: var(--color-gold);
  stroke-width: 1.5;
}

.concept-card__en {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-gold-dark);
  margin-bottom: 8px;
}

.concept-card__title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-navy);
  margin-bottom: 16px;
  font-weight: 600;
}

.concept-card__bar {
  width: 30px;
  height: 1px;
  background: var(--color-gold);
  margin: 0 auto 20px;
}

.concept-card__desc {
  font-size: 0.9rem;
  color: var(--color-gray);
  line-height: 1.8;
}

/* ================================
   Problem
   ================================ */

.problem__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 64px;
}

.problem-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(191, 160, 95, 0.2);
  padding: 48px 32px;
  position: relative;
  transition: var(--transition);
}

.problem-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--color-gold);
}

.problem-card__num {
  position: absolute;
  top: 20px;
  right: 24px;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--color-gold);
  opacity: 0.6;
}

.problem-card h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 20px;
  line-height: 1.5;
}

.problem-card p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ================================
   Services
   ================================ */

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--color-white);
  padding: 48px 32px;
  border: 1px solid var(--color-gray-border);
  transition: var(--transition);
}

.service-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-gold);
}

.service-card__num {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--color-gold);
  opacity: 0.4;
  margin-bottom: 16px;
  line-height: 1;
}

.service-card__title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--color-navy);
  margin-bottom: 16px;
  font-weight: 600;
}

.service-card__desc {
  font-size: 0.92rem;
  color: var(--color-gray);
  line-height: 1.8;
}

/* ================================
   Difference
   ================================ */

.diff__table-wrap {
  overflow-x: auto;
}

.diff__table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.diff__table th,
.diff__table td {
  padding: 24px 32px;
  text-align: left;
  border-bottom: 1px solid var(--color-gray-border);
}

.diff__table th {
  background: var(--color-navy);
  color: var(--color-white);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

.diff__table th:first-child {
  width: 25%;
}

.diff__table td {
  font-size: 0.95rem;
  color: var(--color-gray);
}

.diff__table td:first-child {
  font-weight: 600;
  color: var(--color-navy);
}

.diff__table td:last-child {
  color: var(--color-gold-dark);
  font-weight: 500;
}

.diff__table tr:last-child td {
  border-bottom: none;
}

/* ================================
   Plans
   ================================ */

.plans {
  background: linear-gradient(180deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  color: var(--color-white);
}

.plans .section__num span {
  color: var(--color-gold);
}

.plans .section__title {
  color: var(--color-white);
}

.plans .section__lead {
  color: rgba(255, 255, 255, 0.7);
}

.plans__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: start;
}

.plan-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 52px 32px 40px;
  position: relative;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(8px);
}

.plan-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(191, 160, 95, 0.4);
  transform: translateY(-6px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.25);
}

.plan-card--recommended {
  border: 1px solid var(--color-gold);
  background: linear-gradient(180deg, rgba(191, 160, 95, 0.12) 0%, rgba(255, 255, 255, 0.06) 100%);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(191, 160, 95, 0.3);
  transform: translateY(-16px);
}

.plan-card--recommended:hover {
  transform: translateY(-22px);
  box-shadow: 0 40px 70px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(191, 160, 95, 0.4);
}

.plan-card__badge {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: var(--color-white);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 8px 24px;
  border-radius: 100px;
  letter-spacing: 0.15em;
  box-shadow: 0 4px 15px rgba(191, 160, 95, 0.3);
}

.plan-card__name {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--color-white);
  text-align: center;
  margin-bottom: 8px;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.plan-card__target {
  text-align: center;
  font-size: 0.82rem;
  color: var(--color-gold);
  margin-bottom: 32px;
  font-weight: 500;
}

.plan-card__price {
  text-align: center;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 28px;
}

.plan-card__price-label {
  display: block;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}

.plan-card__price-main {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  color: var(--color-white);
  font-weight: 600;
  line-height: 1.1;
  margin: 8px 0 10px;
}

.plan-card--recommended .plan-card__price-main {
  color: var(--color-gold);
}

.plan-card__yen {
  font-size: 1.3rem;
  margin-right: 4px;
  font-weight: 500;
}

.plan-card__price-note {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  text-decoration: line-through;
}

.plan-card__month {
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 28px;
  line-height: 1.7;
}

.plan-card__features {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.plan-card__features li {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.85);
  padding-left: 26px;
  position: relative;
  line-height: 1.5;
}

.plan-card__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 7px;
  border-left: 2px solid var(--color-gold);
  border-bottom: 2px solid var(--color-gold);
  transform: rotate(-45deg);
}

.plans__note {
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 48px;
}

/* ================================
   Flow
   ================================ */

.flow__list {
  display: flex;
  gap: 24px;
  counter-reset: flow;
}

.flow__item {
  flex: 1;
  background: var(--color-white);
  padding: 36px 24px;
  border-top: 3px solid var(--color-gold);
  position: relative;
}

.flow__num {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--color-gold);
  opacity: 0.5;
  display: block;
  margin-bottom: 16px;
}

.flow__item h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-navy);
  margin-bottom: 12px;
  font-weight: 600;
}

.flow__item p {
  font-size: 0.85rem;
  color: var(--color-gray);
  line-height: 1.7;
}

/* ================================
   FAQ
   ================================ */

.faq__container {
  max-width: 900px;
}

.faq__list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 48px;
}

.faq__item {
  background: var(--color-white);
  border: 1px solid var(--color-gray-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq__item summary {
  padding: 24px 32px;
  font-weight: 600;
  color: var(--color-navy);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq__item summary::-webkit-details-marker {
  display: none;
}

.faq__item summary::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--color-gold);
  font-weight: 300;
  transition: var(--transition);
}

.faq__item[open] summary::after {
  transform: rotate(45deg);
}

.faq__item summary:hover {
  background: var(--color-gray-light);
}

.faq__item p {
  padding: 0 32px 24px;
  color: var(--color-gray);
  font-size: 0.95rem;
  line-height: 1.8;
}

/* ================================
   CTA
   ================================ */

.cta__inner {
  text-align: center;
  max-width: 800px;
}

.cta__label {
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin-bottom: 16px;
}

.cta__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--color-white);
  margin-bottom: 24px;
  line-height: 1.4;
}

.cta__text {
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 40px;
  font-size: 1.05rem;
  line-height: 1.9;
}

.cta__note {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8rem;
  margin-top: 24px;
}

/* ================================
   Footer
   ================================ */

.footer {
  background: var(--color-navy);
  color: var(--color-white);
  padding: 64px 0 0;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__logo {
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--color-gold);
  margin-bottom: 4px;
}

.footer__name {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.footer__desc {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer__nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

.footer__nav a {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
}

.footer__nav a:hover {
  color: var(--color-gold);
}

.footer__bottom {
  text-align: center;
  padding: 24px 0;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ================================
   Animations
   ================================ */

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ================================
   Responsive
   ================================ */

@media (max-width: 1024px) {
  .concept__grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .concept__text {
    position: static;
  }

  .concept__cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .services__grid,
  .plans__grid,
  .problem__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .flow__list {
    flex-wrap: wrap;
  }

  .flow__item {
    flex: 1 1 calc(50% - 12px);
  }
}

@media (max-width: 768px) {
  .header__inner {
    padding: 14px 20px;
  }

  .header__nav,
  .header__cta {
    display: none;
  }

  .header__menu-btn {
    display: flex;
  }

  .header.is-open .header__nav {
    display: block;
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--color-white);
    padding: 40px 24px;
  }

  .header.is-open .header__nav-list {
    flex-direction: column;
    gap: 24px;
  }

  .header.is-open .header__nav-list a {
    font-size: 1.1rem;
  }

  .header.is-open .header__menu-btn span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .header.is-open .header__menu-btn span:nth-child(2) {
    opacity: 0;
  }

  .header.is-open .header__menu-btn span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .hero__overlay {
    background: linear-gradient(180deg, rgba(245, 245, 243, 0.85) 0%, rgba(245, 245, 243, 0.65) 50%, rgba(245, 245, 243, 0.35) 100%);
  }

  .hero__content {
    padding: 120px 20px 80px;
  }

  .hero__title {
    font-size: 2.2rem;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .hero__trust {
    flex-direction: column;
    gap: 20px;
  }

  .section {
    padding: 80px 0;
  }

  .concept__cards,
  .services__grid,
  .plans__grid,
  .problem__grid {
    grid-template-columns: 1fr;
  }

  .flow__item {
    flex: 1 1 100%;
  }

  .diff__table th,
  .diff__table td {
    padding: 16px 20px;
    font-size: 0.85rem;
  }

  .footer__inner {
    flex-direction: column;
    gap: 32px;
  }

  .footer__nav {
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .hero__title {
    font-size: 1.9rem;
  }

  .concept-card,
  .service-card,
  .plan-card,
  .problem-card {
    padding: 32px 20px;
  }

  .plan-card--recommended {
    transform: translateY(0);
  }

  .plan-card--recommended:hover {
    transform: translateY(-6px);
  }
}