/* ===========================================
   デコボコラボ - メインスタイルシート
   =========================================== */

/* --- CSS Variables --- */
:root {
  --color-primary: #4A90D9;
  --color-primary-dark: #2F6DB5;
  --color-primary-light: #EBF4FF;
  --color-accent: #F5A623;
  --color-accent-light: #FFF8EC;
  --color-green: #56C596;
  --color-green-light: #EDFAF4;
  --color-purple: #8B5CF6;
  --color-purple-light: #F3F0FF;

  --color-text: #1A202C;
  --color-text-muted: #718096;
  --color-text-light: #A0AEC0;
  --color-bg: #FAFAFA;
  --color-bg-alt: #F0F4F8;
  --color-bg-dark: #1E2A3A;
  --color-white: #FFFFFF;
  --color-border: #E2E8F0;

  --font-sans: 'Noto Sans JP', sans-serif;
  --font-serif: 'Noto Serif JP', serif;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 40px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10), 0 2px 6px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12), 0 4px 16px rgba(0,0,0,0.08);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- 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);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

ul { list-style: none; }

/* --- Container --- */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Section --- */
.section {
  padding: 100px 0;
}

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

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

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  line-height: 1.4;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.section-header.light h2 {
  color: var(--color-white);
}

.section-header.light p {
  color: rgba(255,255,255,0.75);
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.section-dark .section-label {
  background: rgba(74,144,217,0.2);
  color: #90c5f5;
}

/* ===========================================
   HEADER
   =========================================== */
#header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  transition: var(--transition);
}

#header.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--color-white);
  transition: var(--transition);
}

#header.scrolled .logo {
  color: var(--color-text);
}

.logo-mark {
  font-size: 1.6rem;
  color: var(--color-accent);
}

#nav ul {
  display: flex;
  align-items: center;
  gap: 8px;
}

#nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.9);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

#header.scrolled #nav a {
  color: var(--color-text-muted);
}

#nav a:hover {
  color: var(--color-white);
  background: rgba(255,255,255,0.15);
}

#header.scrolled #nav a:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

#nav .nav-cta {
  background: var(--color-accent);
  color: var(--color-white) !important;
  padding: 10px 20px;
  border-radius: 100px;
  font-weight: 700;
}

#nav .nav-cta:hover {
  background: #e6941a;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(245,166,35,0.4);
}

#hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

#hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: var(--transition);
}

#header.scrolled #hamburger span {
  background: var(--color-text);
}

/* ===========================================
   HERO
   =========================================== */
#hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #1e3a5f 0%, #2d5a8e 40%, #4A90D9 100%);
  padding-top: 72px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-shapes .shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.08;
  animation: float 8s ease-in-out infinite;
}

.shape-1 {
  width: 400px; height: 400px;
  background: var(--color-accent);
  top: -100px; right: 30%;
  animation-delay: 0s;
}

.shape-2 {
  width: 250px; height: 250px;
  background: var(--color-green);
  bottom: 50px; right: 20%;
  animation-delay: 2s;
}

.shape-3 {
  width: 180px; height: 180px;
  background: var(--color-purple);
  top: 30%; left: 5%;
  animation-delay: 4s;
}

.shape-4 {
  width: 120px; height: 120px;
  background: var(--color-white);
  bottom: 20%; left: 30%;
  animation-delay: 1s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.02); }
}

.hero-content {
  padding: 80px 64px 80px 80px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  color: var(--color-white);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 100px;
  margin-bottom: 32px;
  border: 1px solid rgba(255,255,255,0.2);
  letter-spacing: 0.05em;
}

/* --- Hero Text (1案固定) --- */
.hero-text {
  margin-bottom: 40px;
}

.hero-text h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.4;
  margin-bottom: 20px;
}

.hero-text h1 .accent {
  color: var(--color-accent);
  position: relative;
}

.hero-text h1 .accent::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 3px;
  background: var(--color-accent);
  opacity: 0.4;
  border-radius: 2px;
}

.hero-sub {
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-accent);
  color: var(--color-white);
  font-weight: 700;
  font-size: 1rem;
  padding: 16px 32px;
  border-radius: 100px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(245,166,35,0.4);
}

.btn-primary:hover {
  background: #e6941a;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(245,166,35,0.5);
  color: var(--color-white);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--color-white);
  font-weight: 600;
  font-size: 1rem;
  padding: 15px 32px;
  border-radius: 100px;
  border: 2px solid rgba(255,255,255,0.5);
  cursor: pointer;
  transition: var(--transition);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--color-white);
  color: var(--color-white);
}

.btn-full {
  width: 100%;
  justify-content: center;
  font-size: 1.1rem;
  padding: 18px;
}

.hero-image {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 40px;
}

.hero-img-wrap {
  position: relative;
  width: 100%;
  max-width: 520px;
}

.hero-img-wrap img {
  width: 100%;
  height: 460px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

.hero-card {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-lg);
  animation: float 4s ease-in-out infinite;
}

.hero-card-icon {
  font-size: 2rem;
  width: 52px;
  height: 52px;
  background: var(--color-accent-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-card-text strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text);
}

.hero-card-text span {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-indicator span {
  display: block;
  width: 24px;
  height: 40px;
  border: 2px solid rgba(255,255,255,0.5);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator span::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--color-white);
  border-radius: 2px;
  animation: scrollDown 1.5s ease-in-out infinite;
}

@keyframes scrollDown {
  0% { top: 6px; opacity: 1; }
  100% { top: 22px; opacity: 0; }
}

/* ===========================================
   NUMBERS
   =========================================== */
.section-numbers {
  padding: 64px 0;
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-white);
}

.numbers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.number-item {
  padding: 16px;
}

.number-val {
  font-family: var(--font-sans);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.number-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.6;
}

/* ===========================================
   ABOUT
   =========================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 24px;
  color: var(--color-text);
}

.about-text p {
  color: var(--color-text-muted);
  margin-bottom: 18px;
  line-height: 1.85;
  font-size: 0.98rem;
}

.about-text strong {
  color: var(--color-primary);
}

.about-text .accent {
  color: var(--color-accent);
  font-weight: 600;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.about-tags span {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: 100px;
  border: 1px solid rgba(74,144,217,0.2);
}

.about-image {
  position: relative;
}

.about-image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.about-accent {
  position: absolute;
  bottom: -24px;
  right: -24px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  max-width: 260px;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.accent-emoji {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 8px;
}

.about-accent p {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.6;
}

/* ===========================================
   ISSUES
   =========================================== */
.issues-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.issue-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.issue-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-green));
  opacity: 0;
  transition: var(--transition);
}

.issue-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.issue-card:hover::before {
  opacity: 1;
}

.issue-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--color-primary);
}

.issue-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-primary);
  stroke-width: 1.75;
}

.issue-card h4 {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 12px;
  line-height: 1.5;
  color: var(--color-text);
}

.issue-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

/* ===========================================
   SERVICES
   =========================================== */
.services-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.service-item {
  display: grid;
  grid-template-columns: 72px 80px 1fr;
  gap: 0;
  align-items: start;
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 36px 40px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.service-item:hover {
  box-shadow: var(--shadow-lg);
  transform: translateX(4px);
  border-color: var(--color-primary);
}

.service-num {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--color-border);
  line-height: 1;
  padding-top: 4px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
}

.service-item:hover .service-num {
  color: var(--color-primary-light);
}

.service-icon-wrap {
  width: 56px;
  height: 56px;
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--color-primary);
  transition: var(--transition);
  margin-right: 24px;
}

.service-item:hover .service-icon-wrap {
  background: var(--color-primary);
  color: var(--color-white);
}

.service-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-text);
}

.service-body p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.service-body strong {
  color: var(--color-primary-dark);
}

/* ===========================================
   DIFFERENCE TABLE
   =========================================== */
.diff-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 40px;
}

.diff-table {
  width: 100%;
  min-width: 640px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.diff-header {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1fr 1fr 1fr;
  background: var(--color-bg-dark);
}

.diff-row {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1fr 1fr 1fr;
  border-top: 1px solid var(--color-border);
  background: var(--color-white);
  transition: var(--transition);
}

.diff-row:hover {
  background: var(--color-primary-light);
}

.diff-row:nth-child(even) {
  background: var(--color-bg);
}

.diff-row:nth-child(even):hover {
  background: var(--color-primary-light);
}

.diff-cell {
  padding: 16px 18px;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.diff-feature {
  justify-content: flex-start;
  font-weight: 500;
  color: var(--color-text);
}

.diff-header .diff-cell {
  color: rgba(255,255,255,0.85);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 18px 14px;
}

.diff-header .diff-feature {
  color: rgba(255,255,255,0.7);
}

.diff-header .highlight {
  background: #dbeafe;
  color: var(--color-primary-dark) !important;
  font-weight: 700 !important;
  font-size: 1.5rem !important;
}

.diff-cell.highlight {
  background: var(--color-primary-light);
}

.diff-row .highlight {
  background: rgba(74,144,217,0.15);
  border-left: 2px solid var(--color-primary);
  border-right: 2px solid var(--color-primary);
}

.fa-check-circle { color: var(--color-green); font-size: 1.25rem; }
.fa-minus-circle { color: var(--color-accent); font-size: 1.25rem; }
.fa-times-circle { color: #E2E8F0; font-size: 1.25rem; }

.diff-legend {
  display: flex;
  gap: 24px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  padding: 12px 4px;
}

.diff-legend span {
  display: flex;
  align-items: center;
  gap: 8px;
}

.diff-message {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-green-light));
  border-radius: var(--radius-md);
  padding: 28px 32px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  border: 1px solid rgba(74,144,217,0.15);
}

.diff-msg-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.diff-msg-text strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--color-primary-dark);
}

.diff-msg-text p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

/* ===========================================
   VOICE
   =========================================== */
.voices-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.voice-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 36px 28px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  position: relative;
  transition: var(--transition);
}

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

.voice-quote {
  font-family: Georgia, serif;
  font-size: 5rem;
  color: var(--color-primary-light);
  line-height: 0.5;
  margin-bottom: 20px;
  position: absolute;
  top: 16px;
  left: 20px;
}

.voice-card p {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.85;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.voice-author {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
}

.voice-avatar {
  width: 44px;
  height: 44px;
  background: var(--color-bg-alt);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.voice-author strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
}

.voice-author span {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ===========================================
   FLOW
   =========================================== */
.flow-steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  overflow-x: auto;
  padding-bottom: 16px;
}

.flow-step {
  flex: 1;
  min-width: 160px;
  text-align: center;
  padding: 32px 16px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.flow-step:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--color-primary);
}

.flow-num {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 4px 12px;
  border-radius: 100px;
  display: inline-block;
  margin-bottom: 16px;
}

.flow-icon {
  width: 60px;
  height: 60px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--color-white);
  margin: 0 auto 16px;
  transition: var(--transition);
}

.flow-step:hover .flow-icon {
  background: var(--color-accent);
}

.flow-step h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-text);
  line-height: 1.5;
}

.flow-step p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.flow-arrow {
  display: flex;
  align-items: center;
  padding: 0 4px;
  color: var(--color-primary);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 70px;
  opacity: 0.4;
}

/* ===========================================
   CONTACT
   =========================================== */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 60px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 24px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.contact-item i {
  font-size: 1.2rem;
  color: var(--color-primary);
  margin-top: 2px;
  width: 20px;
  flex-shrink: 0;
}

.contact-item strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.contact-item span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.contact-form {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.form-row .form-group {
  margin-bottom: 0;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.required {
  background: #FEE2E2;
  color: #DC2626;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-white);
  transition: var(--transition);
  outline: none;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-light);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(74,144,217,0.12);
}

.form-note {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 16px;
}

/* ===========================================
   FOOTER
   =========================================== */
#footer {
  background: #0F1B2D;
  color: rgba(255,255,255,0.75);
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 64px 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 60px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.8;
  margin-top: 16px;
}

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

.footer-nav h5,
.footer-contact h5 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  transition: var(--transition);
}

.footer-nav a:hover {
  color: var(--color-white);
  padding-left: 6px;
}

.footer-contact p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-contact i {
  color: var(--color-primary);
  width: 16px;
}

.footer-bottom {
  background: #0a1220;
  text-align: center;
  padding: 20px 24px;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
}

/* ===========================================
   TOAST
   =========================================== */
.toast {
  position: fixed;
  bottom: 32px;
  right: 32px;
  background: #1E2A3A;
  color: white;
  padding: 16px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  font-size: 0.92rem;
  font-weight: 500;
  z-index: 9999;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  max-width: 320px;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast.success {
  border-left: 4px solid var(--color-green);
}

.toast.error {
  border-left: 4px solid #FC8181;
}

/* ===========================================
   ANIMATION - Fade In
   =========================================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.issues-grid .fade-in:nth-child(1) { transition-delay: 0s; }
.issues-grid .fade-in:nth-child(2) { transition-delay: 0.1s; }
.issues-grid .fade-in:nth-child(3) { transition-delay: 0.2s; }
.issues-grid .fade-in:nth-child(4) { transition-delay: 0.1s; }
.issues-grid .fade-in:nth-child(5) { transition-delay: 0.2s; }
.issues-grid .fade-in:nth-child(6) { transition-delay: 0.3s; }

.voices-grid .fade-in:nth-child(1) { transition-delay: 0s; }
.voices-grid .fade-in:nth-child(2) { transition-delay: 0.15s; }
.voices-grid .fade-in:nth-child(3) { transition-delay: 0.3s; }

/* ===========================================
   RESPONSIVE
   =========================================== */
@media (max-width: 1024px) {
  .hero-content {
    padding: 80px 40px 80px 48px;
  }

  .about-grid {
    gap: 48px;
  }
}

@media (max-width: 900px) {
  #hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-bottom: 60px;
  }

  .hero-content {
    padding: 100px 40px 40px;
    text-align: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-image {
    height: 380px;
    padding: 0 40px 60px;
  }

  .hero-img-wrap img {
    height: 300px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-accent {
    bottom: -16px;
    right: -8px;
  }

  .numbers-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

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

  .voices-grid {
    grid-template-columns: 1fr;
  }

  .contact-wrap {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 72px 0;
  }

  #nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(12px);
    padding: 20px 24px;
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    z-index: 999;
  }

  #nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  #nav ul {
    flex-direction: column;
    gap: 4px;
    align-items: stretch;
  }

  #nav a {
    color: var(--color-text-muted) !important;
    display: block;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
  }

  #nav a:hover {
    color: var(--color-primary) !important;
    background: var(--color-primary-light) !important;
  }

  #hamburger {
    display: flex;
  }

  #hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

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

  #hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .issues-grid {
    grid-template-columns: 1fr;
  }

  .service-item {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 28px 24px;
  }

  .service-num {
    font-size: 1.2rem;
  }

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

  .flow-arrow {
    display: none;
  }

  .diff-header,
  .diff-row {
    grid-template-columns: 1.5fr 1fr 0.8fr 0.8fr 0.8fr;
  }

  .diff-cell {
    padding: 12px 8px;
    font-size: 0.78rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 28px 20px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 24px;
  }

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

/* Numbers 脚注 */
.number-footnote {
  display: block;
  font-size: 0.72rem;
  color: rgba(255,255,255,0.6);
  margin-top: 6px;
  line-height: 1.5;
  font-weight: 400;
}

/* ===========================================
   APPROACH セクション（成長曲線）
   =========================================== */

.approach-section {
  background-color: #fdf7f5;
}

.approach-body {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 48px;
  align-items: start;
  margin-bottom: 16px;
}

.approach-text p {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text);
  margin-bottom: 16px;
}

.approach-text p:last-child {
  margin-bottom: 0;
}

.approach-chart {
  margin: 0;
}

.growth-curve-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-sm);
}

.approach-chart figcaption {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 8px;
}

.approach-note {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
  margin-top: 8px;
}

@media (max-width: 768px) {
  .approach-body {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* ===========================================
   END APPROACH
   =========================================== */

/* ===========================================
   SERVICES 二層構造
   =========================================== */

.services-two-tier {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 760px;
  margin: 0 auto;
}

.service-tier {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-white);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.service-tier-header {
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.service-tier-a {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
}

.service-tier-b {
  background: linear-gradient(135deg, #2d5a8e 0%, #1a3a5c 100%);
  color: var(--color-white);
}

.service-tier-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  opacity: 0.75;
}

.service-tier-header h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0;
  color: var(--color-white);
}

.service-tier-tag {
  display: inline-block;
  font-size: 0.78rem;
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 20px;
  padding: 3px 12px;
  width: fit-content;
}

.service-tier-body {
  padding: 28px 32px;
}

.service-tier-desc {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--color-text);
  margin-bottom: 20px;
}

.service-tier-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.service-tier-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--color-text);
}

.service-tier-list li .fa-check {
  color: var(--color-primary);
  font-size: 0.78rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* コネクター */
.service-tier-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding: 8px 0;
}

.connector-line {
  width: 1px;
  height: 20px;
  background: var(--color-border);
}

.connector-note {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 24px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-align: center;
}

.connector-note .fa-arrow-down {
  color: var(--color-primary);
  font-size: 0.9rem;
}

.connector-note span {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

@media (max-width: 600px) {
  .service-tier-header,
  .service-tier-body {
    padding: 20px;
  }

  .service-tier-header h3 {
    font-size: 1.2rem;
  }
}

/* ===========================================
   END SERVICES 二層構造
   =========================================== */

/* ===========================================
   FLOW タイムライン
   =========================================== */

.flow-timeline {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.flow-phase {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.flow-phase-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-primary);
  padding: 10px 24px;
}

.flow-phase-num {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.05em;
}

.flow-phase-period {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.75);
}

.flow-phase-body {
  display: flex;
  gap: 20px;
  padding: 24px;
  align-items: flex-start;
}

.flow-phase-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--color-primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1rem;
  margin-top: 2px;
}

.flow-phase-content h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}

.flow-phase-content p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.flow-phase-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.flow-phase-list li {
  font-size: 0.85rem;
  color: var(--color-text);
  padding-left: 16px;
  position: relative;
}

.flow-phase-list li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

.flow-connector {
  display: flex;
  justify-content: center;
  padding: 6px 0;
  color: var(--color-primary);
  font-size: 0.85rem;
  opacity: 0.5;
}

@media (max-width: 600px) {
  .flow-phase-body {
    flex-direction: column;
    gap: 14px;
    padding: 20px;
  }

  .flow-phase-icon {
    width: 36px;
    height: 36px;
    font-size: 0.85rem;
  }
}

/* ===========================================
   END FLOW タイムライン
   =========================================== */

@media (max-width: 480px) {
  .hero-content {
    padding: 96px 24px 40px;
  }

  .hero-image {
    padding: 0 24px 48px;
  }

  .hero-img-wrap img {
    height: 240px;
  }

  .hero-card {
    left: -10px;
    bottom: -10px;
  }

  .container {
    padding: 0 16px;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .numbers-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}