@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@300;400;500;600;700&family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&display=swap');

:root {
  --color-bg: #FAF8F5;
  --color-bg-alt: #F2EDE6;
  --color-surface: #FFFFFF;
  --color-primary: #1A1A2E;
  --color-secondary: #2D2D44;
  --color-accent: #B8965A;
  --color-accent-light: #D4B87A;
  --color-accent-dark: #8A6E3A;
  --color-text: #2C2C2C;
  --color-text-light: #6B6B6B;
  --color-text-muted: #9A9A9A;
  --color-border: #E0D8CC;
  --color-border-light: #EDE8E0;
  --font-serif: 'Noto Serif JP', 'Cormorant Garamond', 'YuMincho', 'Yu Mincho', 'HGS明朝E', serif;
  --font-display: 'Cormorant Garamond', 'Noto Serif JP', serif;
  --transition: 0.3s ease;
  --max-width: 1200px;
  --section-padding: clamp(60px, 10vw, 120px);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-serif);
  font-weight: 400;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.9;
  letter-spacing: 0.04em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(250, 248, 245, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  transition: var(--transition);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.site-logo {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.5vw, 1.6rem);
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

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

.nav-desktop {
  display: flex;
  align-items: center;
  gap: clamp(24px, 3vw, 40px);
}

.nav-desktop a {
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--color-text-light);
  letter-spacing: 0.08em;
  position: relative;
  padding-bottom: 2px;
}

.nav-desktop a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width 0.3s ease;
}

.nav-desktop a:hover::after,
.nav-desktop a.active::after {
  width: 100%;
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--color-primary);
}

/* Mobile menu button */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 20px;
  position: relative;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--color-primary);
  position: absolute;
  left: 0;
  transition: var(--transition);
}

.menu-toggle span:nth-child(1) { top: 0; }
.menu-toggle span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.menu-toggle span:nth-child(3) { bottom: 0; }

.menu-toggle.open span:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}
.menu-toggle.open span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.open span:nth-child(3) {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

/* Mobile navigation */
.nav-mobile {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(250, 248, 245, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
}

.nav-mobile.open {
  display: flex;
}

.nav-mobile a {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: 0.1em;
}

.nav-mobile a.active {
  color: var(--color-accent);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-primary);
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  background: linear-gradient(
    180deg,
    rgba(26, 26, 46, 0.4) 0%,
    rgba(26, 26, 46, 0.6) 50%,
    rgba(26, 26, 46, 0.8) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 0 clamp(20px, 5vw, 60px);
  max-width: 800px;
}

.hero-content h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 400;
  color: #FFFFFF;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 20px;
  line-height: 1.3;
}

.hero-content h1 span {
  color: var(--color-accent-light);
}

.hero-tagline {
  font-size: clamp(0.85rem, 1.5vw, 1rem);
  color: rgba(255, 255, 255, 0.7);
  font-weight: 300;
  letter-spacing: 0.12em;
  line-height: 2;
  margin-bottom: 40px;
}

.hero-line {
  width: 60px;
  height: 1px;
  background: var(--color-accent);
  margin: 0 auto 30px;
}

.hero-cta {
  display: inline-block;
  padding: 14px 42px;
  border: 1px solid rgba(184, 150, 90, 0.6);
  color: var(--color-accent-light);
  font-size: 0.82rem;
  letter-spacing: 0.15em;
  transition: var(--transition);
}

.hero-cta:hover {
  background: rgba(184, 150, 90, 0.15);
  border-color: var(--color-accent-light);
}

/* ===== SECTIONS ===== */
.section {
  padding: var(--section-padding) clamp(20px, 5vw, 40px);
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 500;
  color: var(--color-primary);
  line-height: 1.5;
  margin-bottom: 24px;
  letter-spacing: 0.06em;
}

.section-desc {
  font-size: clamp(0.9rem, 1.2vw, 1rem);
  color: var(--color-text-light);
  line-height: 2;
  max-width: 700px;
}

.section-divider {
  width: 40px;
  height: 1px;
  background: var(--color-accent);
  margin: 20px 0;
}

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

/* ===== CARDS ===== */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  padding: clamp(30px, 4vw, 48px);
}

.card-label {
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.card-title {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}

.card-text {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.9;
}

/* ===== GRID LAYOUTS ===== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(20px, 3vw, 40px);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 32px);
}

/* ===== PLAN CARDS ===== */
.plan-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  padding: clamp(32px, 4vw, 48px);
  position: relative;
}

.plan-card.featured {
  border-color: var(--color-accent);
}

.plan-card.featured::before {
  content: '最も選ばれています';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--color-accent);
  color: #FFFFFF;
  font-size: 0.7rem;
  padding: 5px 18px;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.plan-name {
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.plan-title {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 16px;
}

.plan-price {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 400;
  color: var(--color-primary);
  margin-bottom: 4px;
  letter-spacing: 0.02em;
}

.plan-price-note {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.plan-target {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.9;
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--color-border-light);
}

.plan-features {
  margin-bottom: 24px;
}

.plan-features li {
  font-size: 0.85rem;
  color: var(--color-text);
  line-height: 1.8;
  padding: 6px 0 6px 20px;
  position: relative;
}

.plan-features li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.plan-note {
  font-size: 0.82rem;
  color: var(--color-text-light);
  line-height: 1.9;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
}

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-block;
  padding: 14px 40px;
  background: var(--color-primary);
  color: #FFFFFF;
  font-family: var(--font-serif);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  border: 1px solid var(--color-primary);
  cursor: pointer;
  transition: var(--transition);
}

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

.btn-outline {
  display: inline-block;
  padding: 14px 40px;
  background: transparent;
  color: var(--color-primary);
  font-family: var(--font-serif);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: var(--transition);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ===== FORM ===== */
.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  color: var(--color-text);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.form-group label .required {
  color: var(--color-accent);
  margin-left: 4px;
  font-size: 0.75rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  outline: none;
  transition: var(--transition);
  letter-spacing: 0.03em;
  -webkit-appearance: none;
  border-radius: 0;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-accent);
}

.form-group textarea {
  min-height: 160px;
  resize: vertical;
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.6);
  padding: clamp(48px, 8vw, 80px) clamp(20px, 5vw, 40px) 32px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: #FFFFFF;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-brand span {
  color: var(--color-accent-light);
}

.footer-desc {
  font-size: 0.82rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.5);
}

.footer-heading {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: 20px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.5);
  transition: var(--transition);
}

.footer-links a:hover {
  color: rgba(255, 255, 255, 0.9);
}

.footer-info p {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.9;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  text-align: center;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.3);
}

/* ===== PAGE HERO (sub pages) ===== */
.page-hero {
  position: relative;
  padding: 160px clamp(20px, 5vw, 40px) 80px;
  background: var(--color-primary);
  overflow: hidden;
}

.page-hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  opacity: 0.4;
}

.page-hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
}

.page-hero-label {
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: 16px;
}

.page-hero-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 500;
  color: #FFFFFF;
  letter-spacing: 0.08em;
  line-height: 1.4;
  margin-bottom: 16px;
}

.page-hero-desc {
  font-size: clamp(0.85rem, 1.2vw, 0.95rem);
  color: rgba(255, 255, 255, 0.6);
  line-height: 2;
  max-width: 600px;
}

/* ===== TABLE ===== */
.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table tr {
  border-bottom: 1px solid var(--color-border-light);
}

.info-table th {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text);
  text-align: left;
  padding: 18px 20px 18px 0;
  width: 140px;
  vertical-align: top;
  letter-spacing: 0.04em;
}

.info-table td {
  font-size: 0.88rem;
  color: var(--color-text-light);
  padding: 18px 0;
  line-height: 1.8;
}

/* ===== MESSAGE BLOCK ===== */
.message-block {
  position: relative;
  padding-left: clamp(24px, 4vw, 48px);
  border-left: 2px solid var(--color-accent);
}

.message-block p {
  font-size: clamp(0.92rem, 1.3vw, 1.05rem);
  color: var(--color-text);
  line-height: 2.2;
  margin-bottom: 1.5em;
}

.message-block p:last-child {
  margin-bottom: 0;
}

.message-author {
  margin-top: 32px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
}

/* ===== FAQ ===== */
.faq-item {
  border-bottom: 1px solid var(--color-border-light);
}

.faq-question {
  display: block;
  padding: 22px 40px 22px 0;
  font-size: clamp(0.9rem, 1.2vw, 1rem);
  font-weight: 500;
  color: var(--color-primary);
  cursor: pointer;
  position: relative;
  letter-spacing: 0.03em;
  line-height: 1.7;
  list-style: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--color-accent);
  transition: var(--transition);
}

details[open] .faq-question::after {
  content: '\2212';
}

.faq-answer {
  padding: 0 0 24px 0;
}

.faq-answer p {
  font-size: clamp(0.85rem, 1.1vw, 0.92rem);
  color: var(--color-text-light);
  line-height: 2;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .grid-2 {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  .nav-desktop {
    display: none;
  }
  
  .menu-toggle {
    display: block;
  }
}

@media (max-width: 600px) {
  .header-inner {
    height: 60px;
  }
  
  .info-table th {
    display: block;
    width: 100%;
    padding-bottom: 4px;
  }
  
  .info-table td {
    display: block;
    padding-top: 0;
    padding-bottom: 18px;
  }

  .plan-card.featured::before {
    font-size: 0.65rem;
    padding: 4px 12px;
  }
}

/* ===== ACCESSIBILITY ===== */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}