/* ============================================
   サロンWeb - メインスタイルシート
   モバイルファースト設計
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Colors */
  --color-primary: #C4A882;
  --color-primary-light: #F5EDE3;
  --color-accent: #D4A0A0;
  --color-accent-light: #F5E6E6;
  --color-text: #333333;
  --color-text-mid: #777777;
  --color-text-light: #AAAAAA;
  --color-bg: #FFFFFF;
  --color-bg-alt: #FAF8F5;
  --color-dark: #2D2D2D;
  --color-border: #E8E2DB;

  /* Fonts */
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;
  --font-display: 'Cormorant Garamond', serif;

  /* Spacing */
  --section-padding: 60px 20px;
  --container-max: 1100px;

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

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

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

body {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

.br-pc {
  display: none;
}

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

ul, ol {
  list-style: none;
}

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

/* --- Utility --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header__en {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 0.875rem;
  letter-spacing: 0.2em;
  color: var(--color-primary);
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
}

.section-header__ja {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.375rem;
  letter-spacing: 0.05em;
  line-height: 1.5;
}

.btn {
  display: inline-block;
  padding: 14px 36px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.9375rem;
  letter-spacing: 0.05em;
  border-radius: 50px;
  transition: all var(--transition);
  text-align: center;
}

.btn--primary {
  background-color: var(--color-accent);
  color: #fff;
}

.btn--primary:hover {
  background-color: #c48e8e;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(212, 160, 160, 0.3);
}

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

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

/* ============================================
   Header
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: box-shadow var(--transition);
}

.header--scrolled {
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.06);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.header__logo {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  color: var(--color-text);
}

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

/* Desktop Nav - hidden on mobile */
.header__nav {
  display: none;
}

.header__nav ul {
  display: flex;
  align-items: center;
  gap: 28px;
}

.header__nav a {
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--color-text);
  transition: color var(--transition);
}

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

.header__nav .btn {
  padding: 10px 24px;
  font-size: 0.8125rem;
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  z-index: 110;
}

.hamburger__line {
  display: block;
  width: 100%;
  height: 1.5px;
  background-color: var(--color-text);
  transition: all var(--transition);
  transform-origin: center;
}

.hamburger--active .hamburger__line:nth-child(1) {
  transform: rotate(45deg) translate(4.5px, 4.5px);
}

.hamburger--active .hamburger__line:nth-child(2) {
  opacity: 0;
}

.hamburger--active .hamburger__line:nth-child(3) {
  transform: rotate(-45deg) translate(4.5px, -4.5px);
}

/* Mobile Menu Overlay */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 105;
  transition: right 0.4s ease;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.mobile-menu--open {
  right: 0;
}

.mobile-menu__nav {
  text-align: center;
}

.mobile-menu__nav li {
  margin-bottom: 28px;
}

.mobile-menu__nav a {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-text);
  transition: color var(--transition);
}

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

.mobile-menu__nav .btn {
  margin-top: 12px;
}

/* ============================================
   Section 1: Hero
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 64px;
  padding-bottom: 40px;
}

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

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.92) 0%,
    rgba(255, 255, 255, 0.75) 50%,
    rgba(255, 255, 255, 0.5) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: 40px 20px;
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
}

.hero__catch {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.5rem;
  line-height: 1.6;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
  color: var(--color-text);
}

.hero__sub {
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--color-text-mid);
  line-height: 1.8;
  margin-bottom: 32px;
}

.hero__price {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 12px 20px;
  margin-bottom: 32px;
}

.hero__price-label {
  font-size: 0.8125rem;
  color: var(--color-text-mid);
}

.hero__price-amount {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
}

.hero__price-unit {
  font-size: 0.8125rem;
  color: var(--color-text-mid);
}

.hero__price-note {
  font-size: 0.75rem;
  color: var(--color-text-mid);
  margin-left: 8px;
}

/* ============================================
   Section 2: Problem
   ============================================ */
.problem {
  padding: var(--section-padding);
  background-color: var(--color-bg);
}

.problem__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

.problem__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  border-radius: 8px;
  background: var(--color-bg-alt);
}

.problem__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  margin-top: 2px;
}

.problem__text {
  font-size: 0.9375rem;
  line-height: 1.6;
}

.problem__footer {
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-text);
  letter-spacing: 0.03em;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

/* ============================================
   Section 3: Service
   ============================================ */
.service {
  padding: var(--section-padding);
  background-color: var(--color-bg-alt);
}

.service__cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.service__card {
  background: var(--color-bg);
  border-radius: 12px;
  padding: 32px 24px;
  text-align: center;
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
  transition: transform var(--transition), box-shadow var(--transition);
}

.service__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

.service__card-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 20px;
  color: var(--color-primary);
}

.service__card-title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: 12px;
  letter-spacing: 0.03em;
}

.service__card-text {
  font-size: 0.875rem;
  color: var(--color-text-mid);
  line-height: 1.8;
}

/* ============================================
   Section 4: Works
   ============================================ */
.works {
  padding: 80px 20px;
  background-color: #F7F5F2;
}

.works__showcase-list {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.works__showcase {
  background: var(--color-bg);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.works__showcase:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

.works__showcase-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

/* --- Device Mockup Area --- */
.works__devices {
  position: relative;
  background: linear-gradient(135deg, #E8E2DB 0%, #D5CEC6 100%);
  padding: 32px 24px 24px;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  min-height: 260px;
  overflow: hidden;
}

/* --- Laptop Mockup --- */
.works__laptop {
  width: 78%;
  max-width: 480px;
  position: relative;
  z-index: 1;
}

.works__laptop-bezel {
  background: #1a1a1a;
  border-radius: 8px 8px 0 0;
  padding: 8px 8px 0;
  position: relative;
}

.works__laptop-dots {
  display: flex;
  gap: 4px;
  padding: 0 4px 6px;
}

.works__laptop-dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #444;
}

.works__laptop-dots span:first-child { background: #ff5f57; }
.works__laptop-dots span:nth-child(2) { background: #ffbd2e; }
.works__laptop-dots span:nth-child(3) { background: #28c840; }

.works__laptop-screen {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #222;
  border-radius: 0 0 2px 2px;
}

.works__laptop-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.works__showcase:hover .works__laptop-screen img {
  transform: scale(1.03);
}

.works__laptop-base {
  height: 10px;
  background: linear-gradient(180deg, #2a2a2a 0%, #1a1a1a 100%);
  border-radius: 0 0 4px 4px;
  margin: 0 -4px;
  position: relative;
}

.works__laptop-base::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 50%;
  transform: translateX(-50%);
  width: 30%;
  height: 3px;
  background: #2a2a2a;
  border-radius: 0 0 4px 4px;
}

/* --- Phone Mockup --- */
.works__phone {
  position: absolute;
  right: 8%;
  bottom: 12px;
  width: 22%;
  max-width: 120px;
  min-width: 72px;
  z-index: 2;
  background: #1a1a1a;
  border-radius: 14px;
  padding: 6px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  transition: transform 0.4s ease;
}

.works__showcase:hover .works__phone {
  transform: translateY(-4px);
}

.works__phone-notch {
  width: 40%;
  height: 4px;
  background: #333;
  border-radius: 2px;
  margin: 2px auto 4px;
}

.works__phone-screen {
  aspect-ratio: 9 / 16;
  overflow: hidden;
  border-radius: 8px;
  background: #222;
}

.works__phone-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* --- Showcase Info --- */
.works__showcase-info {
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.works__showcase-num {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--color-primary);
  line-height: 1;
  opacity: 0.4;
  flex-shrink: 0;
}

.works__showcase-text {
  flex: 1;
  min-width: 0;
}

.works__tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 8px;
  letter-spacing: 0.03em;
}

.works__showcase-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 4px;
  letter-spacing: 0.04em;
}

.works__showcase-concept {
  font-size: 0.75rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.works__showcase-desc {
  font-size: 0.8125rem;
  color: var(--color-text-mid);
  line-height: 1.7;
  margin-bottom: 16px;
}

.works__showcase-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-primary);
  transition: gap 0.3s ease;
}

.works__showcase:hover .works__showcase-cta {
  gap: 10px;
}

/* --- Works Footer --- */
.works__footer {
  text-align: center;
  margin-top: 48px;
}

.works__coming {
  font-size: 0.875rem;
  color: var(--color-text-mid);
  margin-bottom: 20px;
}

.works__all-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-bg);
  background: var(--color-text);
  padding: 14px 32px;
  border-radius: 40px;
  transition: background 0.3s ease, gap 0.3s ease;
}

.works__all-link:hover {
  background: var(--color-primary);
  gap: 12px;
}

/* --- Works Desktop --- */
@media (min-width: 768px) {
  .works {
    padding: 100px 40px;
  }

  .works__showcase-list {
    gap: 64px;
  }

  .works__showcase-link {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    align-items: center;
  }

  .works__showcase:nth-child(even) .works__showcase-link {
    grid-template-columns: 1fr 1.2fr;
  }

  .works__showcase:nth-child(even) .works__devices {
    order: 2;
  }

  .works__devices {
    min-height: 340px;
    padding: 40px 32px 32px;
    border-radius: 16px 0 0 16px;
  }

  .works__showcase:nth-child(even) .works__devices {
    border-radius: 0 16px 16px 0;
  }

  .works__showcase-info {
    padding: 40px;
    gap: 20px;
  }

  .works__showcase-num {
    font-size: 3.5rem;
  }

  .works__showcase-title {
    font-size: 1.5rem;
  }

  .works__laptop-bezel {
    border-radius: 10px 10px 0 0;
    padding: 10px 10px 0;
  }

  .works__laptop-dots {
    gap: 5px;
    padding: 0 6px 8px;
  }

  .works__laptop-dots span {
    width: 8px;
    height: 8px;
  }

  .works__phone {
    border-radius: 18px;
    padding: 8px;
    min-width: 90px;
  }

  .works__phone-notch {
    height: 5px;
    margin: 3px auto 5px;
  }

  .works__phone-screen {
    border-radius: 10px;
  }
}

/* ============================================
   Section 5: Why Choose Us (Features)
   ============================================ */
.features {
  padding: var(--section-padding);
  background-color: var(--color-bg-alt);
}

.features__list {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.features__item {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.features__item-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 12px;
  overflow: hidden;
  background: var(--color-bg);
}

.features__item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.features__item-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.features__item-number {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 300;
  color: var(--color-primary);
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}

.features__item-title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
  line-height: 1.5;
}

.features__item-text {
  font-size: 0.875rem;
  color: var(--color-text-mid);
  line-height: 1.8;
}

/* ============================================
   Section 6: Price
   ============================================ */
.price {
  padding: var(--section-padding);
  background-color: var(--color-bg);
}

.price__card {
  max-width: 520px;
  margin: 0 auto 48px;
  background: var(--color-bg);
  border: 2px solid var(--color-primary-light);
  border-radius: 16px;
  padding: 36px 24px;
  text-align: center;
  position: relative;
}

.price__card-label {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 6px 20px;
  border-radius: 20px;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}

.price__amount {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
  margin-bottom: 8px;
}

.price__amount-prefix {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-mid);
}

.price__amount-number {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.price__amount-unit {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-mid);
}

.price__tax {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.price__initial {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 24px;
}

.price__initial strong {
  color: var(--color-accent);
  font-size: 1.125rem;
}

.price__includes {
  text-align: left;
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
}

.price__includes-title {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-mid);
  margin-bottom: 16px;
  text-align: center;
  letter-spacing: 0.05em;
}

.price__includes-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.price__includes-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
}

.price__includes-item i {
  color: var(--color-primary);
  font-size: 1rem;
  flex-shrink: 0;
}

/* Comparison Table */
.price__comparison {
  max-width: 640px;
  margin: 0 auto;
}

.price__comparison-title {
  text-align: center;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-mid);
  margin-bottom: 20px;
}

.price__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.price__table th,
.price__table td {
  padding: 12px 8px;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.price__table th {
  font-weight: 500;
  font-size: 0.75rem;
  color: var(--color-text-mid);
  background: var(--color-bg-alt);
}

.price__table th:first-child,
.price__table td:first-child {
  text-align: left;
  font-weight: 500;
}

.price__table .price__table-highlight {
  background: var(--color-accent-light);
  font-weight: 500;
}

.price__table .price__table-highlight th {
  background: var(--color-accent);
  color: #fff;
}

/* ============================================
   Section 7: Flow
   ============================================ */
.flow {
  padding: var(--section-padding);
  background-color: var(--color-bg-alt);
}

.flow__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  counter-reset: step;
}

.flow__step {
  text-align: center;
  position: relative;
}

.flow__step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 400;
  margin-bottom: 16px;
}

.flow__step-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 8px;
  letter-spacing: 0.03em;
}

.flow__step-text {
  font-size: 0.8125rem;
  color: var(--color-text-mid);
  line-height: 1.7;
}

.flow__step-period {
  display: inline-block;
  font-size: 0.6875rem;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 2px 10px;
  border-radius: 10px;
  margin-top: 8px;
}

.flow__note {
  text-align: center;
  margin-top: 32px;
  font-size: 0.8125rem;
  color: var(--color-text-mid);
}

/* ============================================
   Section 8: FAQ
   ============================================ */
.faq {
  padding: var(--section-padding);
  background-color: var(--color-bg);
}

.faq__list {
  max-width: 700px;
  margin: 0 auto;
}

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

.faq__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.6;
  list-style: none;
}

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

.faq__item summary::before {
  content: 'Q.';
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--color-primary);
  margin-right: 12px;
  flex-shrink: 0;
}

.faq__item summary::after {
  content: '+';
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--color-text-light);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 12px;
}

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

.faq__answer {
  padding: 0 0 20px 28px;
  font-size: 0.875rem;
  color: var(--color-text-mid);
  line-height: 1.8;
}

/* ============================================
   Section 9: Contact CTA
   ============================================ */
.contact {
  padding: var(--section-padding);
  background-color: var(--color-accent-light);
}

.contact .section-header__ja {
  font-size: 1.25rem;
}

.contact__sub {
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-mid);
  margin-top: -32px;
  margin-bottom: 40px;
}

.contact__channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.contact__channel {
  background: var(--color-bg);
  border-radius: 12px;
  padding: 28px 24px;
  text-align: center;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.contact__channel-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 12px;
  color: var(--color-primary);
}

.contact__channel-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 8px;
}

.contact__channel-text {
  font-size: 0.8125rem;
  color: var(--color-text-mid);
  margin-bottom: 16px;
  line-height: 1.7;
}

.contact__note {
  text-align: center;
  margin-top: 24px;
  font-size: 0.8125rem;
  color: var(--color-text-mid);
}

/* Simple Contact Form */
.contact__form {
  max-width: 480px;
  margin: 0 auto;
}

.contact__form-group {
  margin-bottom: 16px;
}

.contact__form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--color-text);
}

.contact__form-label .required {
  font-size: 0.6875rem;
  color: var(--color-accent);
  margin-left: 4px;
}

.contact__form-input,
.contact__form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition);
  outline: none;
}

.contact__form-input:focus,
.contact__form-textarea:focus {
  border-color: var(--color-primary);
}

.contact__form-textarea {
  height: 120px;
  resize: vertical;
}

.contact__form-submit {
  width: 100%;
  margin-top: 8px;
}

/* ============================================
   Section 10: Footer
   ============================================ */
.footer {
  background-color: var(--color-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 48px 20px 80px;
}

.footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
}

.footer__top {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-bottom: 32px;
}

.footer__logo {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.125rem;
  color: #fff;
  letter-spacing: 0.05em;
}

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

.footer__nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
}

.footer__nav a {
  font-size: 0.8125rem;
  transition: color var(--transition);
}

.footer__nav a:hover {
  color: #fff;
}

.footer__sns {
  display: flex;
  gap: 16px;
}

.footer__sns a {
  font-size: 1.25rem;
  transition: color var(--transition);
}

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

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
}

.footer__copyright {
  font-size: 0.6875rem;
  letter-spacing: 0.05em;
}

/* ============================================
   Mobile Fixed CTA Bar
   ============================================ */
.mobile-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 99;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.06);
  transform: translateY(100%);
  transition: transform 0.4s ease;
}

.mobile-cta--visible {
  transform: translateY(0);
}

.mobile-cta__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px;
  background-color: var(--color-accent);
  color: #fff;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: 50px;
  letter-spacing: 0.05em;
}

/* ============================================
   Responsive: Tablet (768px+)
   ============================================ */
@media (min-width: 768px) {
  :root {
    --section-padding: 80px 40px;
  }

  .section-header__ja {
    font-size: 1.5rem;
  }

  .br-pc {
    display: inline;
  }

  .mobile-cta {
    display: none;
  }

  /* Header */
  .hamburger {
    display: none;
  }

  .header__nav {
    display: block;
  }

  .mobile-menu {
    display: none;
  }

  /* Hero */
  .hero__content {
    max-width: 600px;
    margin: 0;
    margin-left: calc((100vw - var(--container-max)) / 2 + 20px);
    padding: 60px 40px;
  }

  .hero__catch {
    font-size: 2rem;
  }

  .hero__price-amount {
    font-size: 1.75rem;
  }

  /* Problem */
  .problem__list {
    grid-template-columns: 1fr 1fr;
  }

  /* Service */
  .service__cards {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Works */
  .works__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Features - zigzag */
  .features__item {
    flex-direction: row;
    gap: 40px;
    align-items: center;
  }

  .features__item:nth-child(even) {
    flex-direction: row-reverse;
  }

  .features__item-image {
    flex: 0 0 45%;
  }

  .features__item-content {
    flex: 1;
  }

  /* Price */
  .price__card {
    padding: 48px 40px;
  }

  .price__includes-list {
    grid-template-columns: 1fr 1fr;
  }

  /* Flow */
  .flow__steps {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }

  /* Contact */
  .contact__channels {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact .section-header__ja {
    font-size: 1.5rem;
  }

  /* Footer */
  .footer__top {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

/* ============================================
   Responsive: Desktop (1024px+)
   ============================================ */
@media (min-width: 1024px) {
  :root {
    --section-padding: 100px 40px;
  }

  body {
    font-size: 1rem;
  }

  .section-header {
    margin-bottom: 56px;
  }

  .section-header__ja {
    font-size: 1.75rem;
  }

  /* Hero */
  .hero__content {
    padding: 80px 40px;
  }

  .hero__catch {
    font-size: 2.5rem;
  }

  .hero__sub {
    font-size: 1rem;
  }

  .hero__price-amount {
    font-size: 2rem;
  }

  /* Features */
  .features__item {
    gap: 60px;
  }

  .features__item-title {
    font-size: 1.25rem;
  }

  /* Price */
  .price__amount-number {
    font-size: 3rem;
  }

  /* Works */
  .works__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}