/* ============================================
   F&B Lab — Design System
   ============================================ */

:root {
  /* Colors */
  --color-navy: #0E2A47;
  --color-brass: #B98C46;
  --color-offwhite: #F7F4EE;
  --color-charcoal: #1A1A1A;
  --color-border: #D9D5CC;
  --color-white: #FFFFFF;

  /* Typography */
  --font-serif: "Noto Serif JP", "Yu Mincho", "YuMincho", serif;
  --font-sans: "Noto Sans JP", "Yu Gothic", "YuGothic", "Hiragino Sans", sans-serif;
  --font-mono: "IBM Plex Mono", "Inter", monospace;
  --font-inter: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 48px;
  --space-xl: 96px;
  --space-2xl: 160px;

  /* Layout */
  --max-width: 1200px;
  --content-width: 720px;
  --radius: 4px;

  /* Transitions */
  --transition: 0.3s ease;
}

/* ============================================
   Reset & Base
   ============================================ */

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.8;
  color: var(--color-charcoal);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  opacity: 0.7;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

/* ============================================
   Typography
   ============================================ */

.h1 {
  font-family: var(--font-serif);
  font-size: 56px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.02em;
}

.h2 {
  font-family: var(--font-serif);
  font-size: 40px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.02em;
}

.h3 {
  font-family: var(--font-sans);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.5;
}

.lead {
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.8;
}

.caption {
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-charcoal);
  opacity: 0.7;
}

.number {
  font-family: var(--font-mono);
  font-weight: 600;
}

@media (max-width: 768px) {
  .h1 { font-size: 36px; }
  .h2 { font-size: 28px; }
  .h3 { font-size: 20px; }
  .lead { font-size: 16px; }
}

/* ============================================
   Layout
   ============================================ */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-2xl) 0;
}

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

@media (max-width: 768px) {
  .section { padding: var(--space-xl) 0; }
}

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

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  max-width: var(--max-width);
  margin: 0 auto;
}

.header__logo {
  font-family: var(--font-inter);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-navy);
}

.header__logo span {
  color: var(--color-brass);
}

.header__nav {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.header__nav a {
  font-size: 14px;
  color: var(--color-charcoal);
}

.header__cta {
  background: var(--color-navy);
  color: var(--color-offwhite);
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
}

.header__cta:hover {
  background: var(--color-brass);
  opacity: 1;
}

.header__mobile-toggle {
  display: none;
  font-size: 24px;
  color: var(--color-navy);
}

@media (max-width: 768px) {
  .header__nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    gap: 0;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-border);
  }
  .header__nav.is-open { display: flex; }
  .header__nav a {
    padding: var(--space-sm) var(--space-md);
    width: 100%;
  }
  .header__cta { display: none; }
  .header__mobile-toggle { display: block; }
}

/* ============================================
   Section 1: Hero
   ============================================ */

.hero {
  min-height: 100vh;
  background: var(--color-navy);
  color: var(--color-offwhite);
  display: flex;
  align-items: center;
  padding: var(--space-xl) var(--space-md);
  margin-top: 60px;
}

.hero__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.hero__title {
  margin-bottom: var(--space-md);
}

.hero__subtitle {
  max-width: 640px;
  margin: 0 auto var(--space-lg);
  opacity: 0.9;
}

.hero__ctas {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  align-items: center;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 16px 32px;
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 700;
  text-align: center;
  transition: all var(--transition);
  cursor: pointer;
}

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

.btn--primary:hover {
  background: #C99A56;
  opacity: 1;
  transform: translateY(-2px);
}

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

.btn--secondary:hover {
  background: var(--color-offwhite);
  color: var(--color-navy);
  opacity: 1;
}

.hero__badges {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-lg);
  font-size: 13px;
  opacity: 0.85;
}

.hero__badge {
  display: flex;
  align-items: center;
  gap: 6px;
}

@media (max-width: 768px) {
  .hero { padding: var(--space-lg) var(--space-md); }
  .hero__badges { font-size: 12px; gap: var(--space-sm); }
  .btn { width: 100%; max-width: 320px; }
}

/* ============================================
   Section 2: Problems
   ============================================ */

.problems {
  background: var(--color-offwhite);
}

.problems__inner {
  max-width: var(--content-width);
  margin: 0 auto;
  text-align: center;
}

.problems__title {
  margin-bottom: var(--space-md);
}

.problems__lead {
  margin-bottom: var(--space-lg);
  color: var(--color-charcoal);
}

.problems__list {
  text-align: left;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 600px;
  margin: 0 auto;
}

.problems__list li {
  position: relative;
  padding-left: var(--space-md);
  font-size: 17px;
  line-height: 1.8;
}

.problems__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 3px;
  height: 1.2em;
  background: var(--color-brass);
}

.problems__summary {
  margin-top: var(--space-lg);
  font-weight: 700;
}

/* ============================================
   Section 3: Why We're Different
   ============================================ */

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

.why__inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-xl);
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
}

.why__title {
  margin-bottom: var(--space-md);
}

.why__text p {
  margin-bottom: var(--space-md);
}

.why__profile {
  background: var(--color-offwhite);
  padding: var(--space-lg);
  border-radius: var(--radius);
}

.why__photo {
  width: 100%;
  aspect-ratio: 4 / 5;
  background: var(--color-border);
  margin-bottom: var(--space-md);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-charcoal);
  opacity: 0.5;
  font-size: 14px;
}

.why__profile-name {
  font-weight: 700;
  font-size: 20px;
  margin-bottom: 4px;
}

.why__profile-role {
  color: var(--color-brass);
  font-size: 14px;
  margin-bottom: var(--space-md);
}

.why__profile dl {
  font-size: 14px;
  margin-bottom: var(--space-md);
}

.why__profile dt {
  font-weight: 700;
  margin-top: var(--space-xs);
}

.why__profile dd {
  margin-bottom: var(--space-xs);
}

@media (max-width: 768px) {
  .why__inner {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

/* ============================================
   Section 4: Services
   ============================================ */

.services {
  background: var(--color-offwhite);
}

.services__title {
  text-align: center;
  margin-bottom: var(--space-md);
}

.services__lead {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  max-width: 900px;
  margin: 0 auto;
}

.service-card {
  background: var(--color-white);
  padding: var(--space-lg);
  border-radius: var(--radius);
  border-left: 3px solid var(--color-brass);
}

.service-card__title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--color-navy);
}

.service-card__list {
  list-style: none;
  font-size: 15px;
  line-height: 2;
}

@media (max-width: 768px) {
  .services__grid { grid-template-columns: 1fr; }
}

/* ============================================
   Section 5: Pricing
   ============================================ */

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

.pricing__title {
  text-align: center;
  margin-bottom: var(--space-md);
}

.pricing__lead {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.pricing__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  max-width: 1100px;
  margin: 0 auto var(--space-xl);
}

.plan {
  border: 1px solid var(--color-border);
  padding: var(--space-lg);
  border-radius: var(--radius);
  background: var(--color-white);
  position: relative;
}

.plan--featured {
  border-color: var(--color-brass);
  border-width: 2px;
  transform: scale(1.03);
}

.plan--featured::before {
  content: "おすすめ";
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-brass);
  color: var(--color-white);
  padding: 4px 16px;
  font-size: 12px;
  border-radius: var(--radius);
  font-weight: 700;
}

.plan__name {
  font-family: var(--font-inter);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--space-xs);
}

.plan__price {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  color: var(--color-charcoal);
  margin-bottom: 2px;
}

.plan__price-unit {
  font-size: 14px;
  color: var(--color-charcoal);
  opacity: 0.6;
  margin-bottom: var(--space-md);
}

.plan__target {
  font-size: 13px;
  color: var(--color-charcoal);
  opacity: 0.7;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-md);
}

.plan__features {
  list-style: none;
  font-size: 14px;
  line-height: 2;
}

.plan__features li::before {
  content: "✓ ";
  color: var(--color-brass);
  font-weight: 700;
}

.plan__features li.is-disabled {
  color: var(--color-border);
}

.plan__features li.is-disabled::before {
  content: "— ";
  color: var(--color-border);
}

.pricing__onboarding {
  text-align: center;
  background: var(--color-offwhite);
  padding: var(--space-md);
  border-radius: var(--radius);
  max-width: 720px;
  margin: 0 auto var(--space-xl);
  font-size: 14px;
}

.pricing__spot-title {
  text-align: center;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.pricing__spot-table {
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
  border-collapse: collapse;
}

.pricing__spot-table th,
.pricing__spot-table td {
  text-align: left;
  padding: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
}

.pricing__spot-table th {
  background: var(--color-offwhite);
  font-weight: 700;
}

.pricing__terms {
  max-width: 720px;
  margin: var(--space-lg) auto 0;
  font-size: 13px;
  color: var(--color-charcoal);
  opacity: 0.7;
  text-align: center;
  line-height: 1.8;
}

@media (max-width: 768px) {
  .pricing__grid { grid-template-columns: 1fr; }
  .plan--featured { transform: none; }
}

/* ============================================
   Section 6: Process
   ============================================ */

.process {
  background: var(--color-offwhite);
}

.process__title {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.process__list {
  max-width: 720px;
  margin: 0 auto;
  list-style: none;
}

.process__item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.process__item:last-child {
  border-bottom: none;
}

.process__step {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-brass);
  font-weight: 700;
  letter-spacing: 0.1em;
}

.process__content h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--color-navy);
}

.process__content p {
  font-size: 14px;
  color: var(--color-charcoal);
  opacity: 0.8;
}

/* ============================================
   Section 7: Cases
   ============================================ */

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

.cases__title {
  text-align: center;
  margin-bottom: var(--space-md);
}

.cases__lead {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  max-width: 1100px;
  margin: 0 auto;
}

.case-card {
  background: var(--color-offwhite);
  border-radius: var(--radius);
  overflow: hidden;
}

.case-card__photo {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-charcoal);
  opacity: 0.5;
  font-size: 14px;
}

.case-card__body {
  padding: var(--space-md);
}

.case-card__name {
  font-weight: 700;
  font-size: 18px;
  color: var(--color-navy);
  margin-bottom: 4px;
}

.case-card__meta {
  font-size: 13px;
  color: var(--color-charcoal);
  opacity: 0.6;
  margin-bottom: var(--space-sm);
}

.case-card__row {
  font-size: 14px;
  margin-bottom: 8px;
}

.case-card__row strong {
  color: var(--color-brass);
}

.cases__note {
  text-align: center;
  font-size: 13px;
  color: var(--color-charcoal);
  opacity: 0.7;
  margin-top: var(--space-md);
}

@media (max-width: 768px) {
  .cases__grid { grid-template-columns: 1fr; }
}

/* ============================================
   Section 8: FAQ
   ============================================ */

.faq {
  background: var(--color-offwhite);
}

.faq__title {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.faq__list {
  max-width: var(--content-width);
  margin: 0 auto;
}

.faq__item {
  border-bottom: 1px solid var(--color-border);
}

.faq__item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq__question {
  width: 100%;
  text-align: left;
  padding: var(--space-md) 0;
  font-size: 16px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-charcoal);
}

.faq__question::after {
  content: "+";
  font-size: 24px;
  color: var(--color-brass);
  transition: transform var(--transition);
}

.faq__item.is-open .faq__question::after {
  content: "−";
}

.faq__answer {
  display: none;
  padding: 0 0 var(--space-md);
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-charcoal);
  opacity: 0.85;
}

.faq__item.is-open .faq__answer {
  display: block;
}

/* ============================================
   Section 9: Final CTA
   ============================================ */

.final-cta {
  background: var(--color-navy);
  color: var(--color-offwhite);
  text-align: center;
}

.final-cta__title {
  margin-bottom: var(--space-md);
}

.final-cta__lead {
  margin-bottom: var(--space-lg);
  opacity: 0.85;
}

.final-cta__buttons {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-md);
}

.final-cta__note {
  font-size: 13px;
  opacity: 0.7;
}

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

.footer {
  background: var(--color-charcoal);
  color: var(--color-offwhite);
  padding: var(--space-lg) 0 var(--space-md);
  font-size: 14px;
}

.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.footer__brand {
  font-family: var(--font-inter);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.footer__tagline {
  opacity: 0.7;
  font-size: 13px;
  margin-bottom: var(--space-md);
}

.footer__divider {
  border-top: 1px solid rgba(247, 244, 238, 0.1);
  margin: var(--space-md) 0;
}

.footer__company {
  font-size: 13px;
  line-height: 1.8;
  opacity: 0.7;
}

.footer__company p {
  margin-bottom: 2px;
}

.footer__links {
  margin-top: var(--space-md);
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.footer__links a {
  font-size: 13px;
  opacity: 0.85;
}

.footer__copyright {
  margin-top: var(--space-md);
  font-size: 12px;
  opacity: 0.5;
}

/* ============================================
   Legal Pages (privacy, tokushoho)
   ============================================ */

.legal {
  padding-top: 120px;
  padding-bottom: var(--space-xl);
  max-width: var(--content-width);
  margin: 0 auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

.legal h1 {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 700;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.legal h2 {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 700;
  margin: var(--space-lg) 0 var(--space-sm);
  color: var(--color-navy);
}

.legal p, .legal li {
  font-size: 15px;
  line-height: 1.9;
  margin-bottom: var(--space-sm);
}

.legal ul, .legal ol {
  padding-left: var(--space-md);
  margin-bottom: var(--space-sm);
}

.legal table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0;
  font-size: 14px;
}

.legal th, .legal td {
  text-align: left;
  padding: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.legal th {
  width: 30%;
  background: var(--color-offwhite);
  font-weight: 700;
}

.legal__back {
  margin-top: var(--space-xl);
}

.legal__back a {
  color: var(--color-brass);
  font-weight: 700;
}