/* =====================
   ARSIA SINAR ABADI
   Redesigned – Natural × Trust
   ===================== */

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

:root {
  /* --- Color Palette (Natural Green) --- */
  --green-deep: #1a3a2a;
  --green: #2d5a3d;
  --green-mid: #3d7a52;
  --green-light: #5a9e6f;
  --green-pale: #e8f0eb;
  --accent: #c4553a;
  --accent-hover: #a84530;
  --bg: #faf9f6;
  --bg-alt: #f2f0eb;
  --text: #2a2a2a;
  --text-light: #5a5a5a;
  --text-muted: #8a8a8a;
  --white: #ffffff;
  --border: #e2dfd8;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  color: var(--text);
  line-height: 1.8;
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

h1,
h2,
h3 {
  font-family: 'Noto Serif JP', 'Yu Mincho', serif;
  font-weight: 600;
  line-height: 1.4;
}

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

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.fade-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.fade-in-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

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

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 249, 246, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 223, 216, 0.5);
  transition: background var(--transition), box-shadow var(--transition);
}

header.scrolled {
  background: rgba(250, 249, 246, 0.98);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: 'Noto Serif JP', serif;
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--green-deep);
  letter-spacing: 0.02em;
}

.logo-mark {
  display: flex;
  gap: 5px;
}

.logo-mark span {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.logo-mark .dot-red {
  background: var(--accent);
}

.logo-mark .dot-green {
  background: var(--green);
}

nav ul {
  display: flex;
  list-style: none;
  gap: 32px;
  align-items: center;
}

nav a {
  font-size: 0.85rem;
  color: var(--text-light);
  font-weight: 500;
  transition: color var(--transition);
  letter-spacing: 0.03em;
  position: relative;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--green);
  transition: width var(--transition);
}

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

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

.nav-cta {
  background: var(--green);
  color: var(--white) !important;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  transition: background var(--transition), transform var(--transition) !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--green-mid) !important;
  color: var(--white) !important;
  transform: translateY(-1px);
}

/* Hamburger (mobile) */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* =====================
   Hero Section (Top Page)
   ===================== */

.hero {
  position: relative;
  min-height: 100vh;
  background: url('../images/top_kv.jpg') center center / cover no-repeat;
  display: flex;
  align-items: center;
  padding: 0;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
      rgba(26, 58, 42, 0.72) 0%,
      rgba(26, 58, 42, 0.45) 40%,
      rgba(0, 0, 0, 0.15) 100%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 140px 48px 100px;
  display: block;
}

.hero-text h1 {
  font-family: 'Noto Serif JP', serif;
  font-size: 3.2rem;
  font-weight: 600;
  line-height: 1.45;
  color: #ffffff;
  margin-bottom: 24px;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
  letter-spacing: 0.04em;
}

.hero-text p {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.2);
  max-width: 520px;
  line-height: 2;
}

.hero .section-label {
  color: rgba(255, 255, 255, 0.7);
  font-family: 'Noto Sans JP', sans-serif;
  letter-spacing: 0.2em;
}

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

/* =====================
   Buttons
   ===================== */

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.03em;
  border: none;
}

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

.btn-accent:hover {
  background: var(--accent-hover);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(196, 85, 58, 0.3);
}

.btn-red {
  background: var(--accent);
  color: var(--white);
}

.btn-red:hover {
  background: var(--accent-hover);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(196, 85, 58, 0.3);
}

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

.btn-green:hover {
  background: var(--green-mid);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(45, 90, 61, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--green);
  border: 2px solid var(--green);
}

.btn-outline:hover {
  background: var(--green);
  color: var(--white);
  transform: translateY(-2px);
}

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

.btn-white:hover {
  background: var(--bg);
  color: var(--green-deep);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

/* =====================
   Sections
   ===================== */

section {
  padding: 100px 32px;
}

section:nth-child(odd):not(.cta-section):not(.social-banner):not(.hero) {
  background: var(--bg-alt);
}

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

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

.section-label {
  display: inline-block;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 12px;
}

/* Vertical label (nia.cafe style) */
.section-label-vertical {
  writing-mode: vertical-rl;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--green);
  border-right: 2px solid var(--green);
  padding-right: 12px;
}

.section-header h2 {
  font-size: 1.85rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--green-deep);
}

.section-header p {
  color: var(--text-light);
  max-width: 720px;
  margin: 0 auto;
  font-size: 0.95rem;
}

/* =====================
   3-Column Grid
   ===================== */

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

.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 24px;
}

.card-icon-green {
  background: var(--green-pale);
}

.card-icon-red {
  background: #fef0ed;
}

.card-icon-blue {
  background: #eef5fc;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--green-deep);
}

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

/* =====================
   Concept / About Section
   ===================== */

.concept-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.concept-image {
  border-radius: var(--radius);
  aspect-ratio: 4/3;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.concept-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.concept-image:hover img {
  transform: scale(1.03);
}

.concept-text h2 {
  font-size: 1.65rem;
  font-weight: 600;
  margin-bottom: 20px;
  line-height: 1.6;
  color: var(--green-deep);
}

.concept-text p {
  color: var(--text-light);
  margin-bottom: 24px;
  line-height: 2;
}

/* =====================
   News Section
   ===================== */

.news-list {
  list-style: none;
}

.news-list li {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
  transition: background var(--transition);
}

.news-list li:hover {
  background: rgba(0, 0, 0, 0.01);
}

.news-date {
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
  min-width: 90px;
  font-family: 'Noto Sans JP', sans-serif;
}

.news-tag {
  display: inline-block;
  font-size: 0.68rem;
  padding: 3px 10px;
  border-radius: 20px;
  background: var(--green-pale);
  color: var(--green);
  font-weight: 600;
  white-space: nowrap;
}

.news-title a:hover {
  color: var(--green);
}

/* =====================
   Product Cards
   ===================== */

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.product-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin: 0 auto 48px;
}

.product-card[hidden] {
  display: none;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.product-thumb {
  aspect-ratio: 1;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.product-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-card:hover .product-thumb img {
  transform: scale(1.06);
}

.product-info {
  padding: 18px;
}

.product-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.68rem;
  color: var(--green);
  background: var(--green-pale);
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 10px;
  font-weight: 600;
}

.product-name {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.product-price {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
}

.product-btn {
  display: block;
  text-align: center;
  font-size: 0.85rem;
  padding: 10px;
  background: var(--green);
  color: var(--white);
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: background var(--transition), transform var(--transition);
}

.product-btn:hover {
  background: var(--green-mid);
  color: var(--white);
  transform: translateY(-1px);
}

/* =====================
   Page Hero (inner pages)
   ===================== */

.page-hero {
  position: relative;
  min-height: 400px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 120px 32px 60px;
  text-align: center;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
      rgba(26, 58, 42, 0.65) 0%,
      rgba(0, 0, 0, 0.35) 100%);
}

.page-hero .section-label,
.page-hero h1,
.page-hero p {
  position: relative;
  z-index: 1;
}

.page-hero .section-label {
  color: rgba(255, 255, 255, 0.7);
}

.page-hero h1 {
  font-size: 2.2rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: #ffffff;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.25);
  letter-spacing: 0.04em;
}

.page-hero p {
  color: rgba(255, 255, 255, 0.92);
  max-width: 640px;
  margin: 0 auto;
  font-size: 0.95rem;
}

/* =====================
   Company Table
   ===================== */

.company-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.company-table {
  width: 100%;
  border-collapse: collapse;
}

.company-table th,
.company-table td {
  padding: 16px 18px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.company-table th {
  background: var(--bg-alt);
  font-weight: 600;
  width: 36%;
  color: var(--text);
}

.company-table td {
  color: var(--text-light);
}

.sns-links {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.sns-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  transition: all var(--transition);
}

.sns-btn:hover {
  background: var(--green);
  color: var(--white);
  border-color: var(--green);
  transform: translateY(-2px);
}

/* =====================
   Contact Form
   ===================== */

.contact-form {
  background: var(--white);
  padding: 52px 56px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 48px;
}

.contact-info-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 0;
}

.contact-info-item {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.contact-info-icon {
  font-size: 1.5rem;
  min-width: 28px;
}

.contact-info-item h3 {
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.contact-info-item p {
  font-size: 0.85rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* 2-column form grid */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  margin-bottom: 24px;
}

label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

label .required {
  color: var(--accent);
  font-size: 0.72rem;
  margin-left: 6px;
}

input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
  width: 100%;
  padding: 13px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--white);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(45, 90, 61, 0.1);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

.form-submit {
  text-align: center;
}

.btn-submit {
  background: var(--green);
  color: var(--white);
  border: none;
  padding: 16px 56px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all var(--transition);
}

.btn-submit:hover {
  background: var(--green-mid);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(45, 90, 61, 0.3);
}

/* =====================
   Guide Section
   ===================== */

.guide-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  counter-reset: step;
}

.step-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  position: relative;
  counter-increment: step;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.step-card::before {
  content: counter(step);
  position: absolute;
  top: -16px;
  left: 28px;
  width: 36px;
  height: 36px;
  background: var(--green);
  color: white;
  border-radius: 50%;
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(45, 90, 61, 0.3);
}

.step-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
  margin-top: 10px;
  color: var(--green-deep);
}

.step-card p {
  font-size: 0.875rem;
  color: var(--text-light);
  line-height: 1.9;
}

/* =====================
   FAQ (Guide Section)
   ===================== */

details {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 22px;
  cursor: pointer;
  transition: box-shadow var(--transition);
}

details:hover {
  box-shadow: var(--shadow-sm);
}

details summary {
  font-weight: 600;
  font-size: 0.95rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

details summary .faq-icon {
  color: var(--green);
  font-size: 1.2rem;
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 12px;
}

details[open] summary .faq-icon {
  transform: rotate(45deg);
}

details p {
  margin-top: 14px;
  font-size: 0.875rem;
  color: var(--text-light);
  line-height: 2;
}

/* =====================
   Section Divider
   ===================== */

.section-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

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

.cta-section {
  background: linear-gradient(135deg, #0a1f14 0%, #112b1c 50%, #1a3a2a 100%);
  padding: 80px 32px;
  text-align: center;
}

.cta-section h2 {
  color: #ffffff;
  font-size: 1.8rem;
  margin-bottom: 16px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 36px;
  font-size: 0.95rem;
}

/* =====================
   Social Contribution Banner
   ===================== */

.social-banner {
  background: linear-gradient(135deg, var(--green-pale), #eef5fc);
  padding: 80px 32px;
  text-align: center;
}

.social-banner h2 {
  font-size: 1.8rem;
  margin-bottom: 16px;
  color: var(--green-deep);
}

.social-banner p {
  color: #3a3a3a;
  max-width: 560px;
  margin: 0 auto 32px;
}

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

footer {
  background: var(--green-deep);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 32px 28px;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  color: var(--white);
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.85rem;
  line-height: 2;
  color: rgba(255, 255, 255, 0.6);
}

.footer-col h4 {
  color: var(--white);
  font-family: 'Noto Serif JP', serif;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  color: rgba(255, 255, 255, 0.4);
  transition: color var(--transition);
}

.footer-legal a:hover {
  color: var(--white);
}

.privacy-policy {
  color: var(--text-light);
  font-size: 0.92rem;
  line-height: 2;
}

.privacy-policy h3 {
  color: var(--green-deep);
  font-size: 1.05rem;
  margin: 40px 0 12px;
}

.privacy-policy p + p {
  margin-top: 12px;
}

.privacy-policy ul,
.privacy-policy ol {
  margin: 14px 0 18px;
  padding-left: 1.6em;
}

.privacy-policy li + li {
  margin-top: 4px;
}

.privacy-policy address {
  margin-top: 14px;
  font-style: normal;
}

.privacy-policy a {
  color: var(--green);
  text-decoration: underline;
}

.privacy-policy-date {
  margin-top: 28px !important;
}

/* =====================
   Hero Image (general purpose)
   ===================== */

.hero-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 4/3;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

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

@media (max-width: 1024px) {
  .hero-text h1 {
    font-size: 2.4rem;
  }

  .grid-3,
  .guide-steps {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  body {
    padding-top: 72px;
  }

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

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

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

  .hero {
    min-height: 85vh;
  }

  .hero-inner {
    padding: 100px 24px 60px;
  }

  .hero-text h1 {
    font-size: 2rem;
  }

  nav ul {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    gap: 0;
  }

  nav ul.open {
    display: flex;
  }

  nav ul li {
    border-bottom: 1px solid var(--border);
  }

  nav a {
    display: block;
    padding: 14px 0;
  }

  nav a::after {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .grid-3,
  .guide-steps {
    grid-template-columns: 1fr;
  }

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

  .concept-grid,
  .company-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
  }

  .contact-form {
    padding: 24px;
  }

  section {
    padding: 64px 20px;
  }

  .page-hero {
    min-height: 300px;
    padding: 100px 20px 40px;
  }

  .page-hero h1 {
    font-size: 1.6rem;
  }
}

@media (max-width: 480px) {
  .product-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }

  .hero-text h1 {
    font-size: 1.6rem;
  }
}
/* =====================================================
   TEST DESIGN additions — 3本柱 / Story / Placeholders
   （元テーマには存在しない、テストデザイン用の追加クラス）
   ===================================================== */

/* --- コンセプト宣言（dari-k型の一文宣言） --- */
.concept-statement {
  text-align: center;
  padding: 110px 32px;
  background: var(--bg);
}
.concept-statement .lead {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(1.5rem, 3.4vw, 2.4rem);
  font-weight: 600;
  line-height: 2;
  color: var(--green-deep);
  letter-spacing: 0.06em;
  max-width: 880px;
  margin: 0 auto 28px;
}
.concept-statement .lead .accent { color: var(--accent); }
.concept-statement .sub {
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto;
  font-size: 0.98rem;
  line-height: 2.1;
}

/* --- 3本柱（つくる人 / えらぶ人 / つかう人） --- */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.pillar {
  position: relative;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 44px 32px 36px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  overflow: hidden;
}
.pillar:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.pillar::before {
  content: attr(data-no);
  position: absolute;
  top: 10px; right: 22px;
  font-family: 'Noto Serif JP', serif;
  font-size: 4.5rem;
  font-weight: 700;
  color: var(--green-pale);
  line-height: 1;
  z-index: 0;
}
.pillar > * { position: relative; z-index: 1; }
.pillar .pillar-en {
  font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--green); font-weight: 600;
}
.pillar h3 {
  font-size: 1.35rem; color: var(--green-deep);
  margin: 8px 0 14px; letter-spacing: 0.04em;
}
.pillar p { font-size: 0.9rem; color: var(--text-light); line-height: 1.95; margin-bottom: 18px; }
.pillar .pillar-link { font-size: 0.85rem; font-weight: 600; color: var(--green); }
.pillar .pillar-link:hover { color: var(--accent); }
.pillar.accent-top { border-top: 3px solid var(--accent); }

/* --- ストーリーの流れ（背景→課題→解決→モデル） --- */
.story-flow { display: flex; flex-direction: column; gap: 0; }
.story-step {
  display: grid; grid-template-columns: 160px 1fr; gap: 40px;
  padding: 40px 0; border-bottom: 1px solid var(--border); align-items: start;
}
.story-step:last-child { border-bottom: none; }
.story-step .story-key {
  font-family: 'Noto Serif JP', serif; color: var(--green);
  font-size: 1.05rem; font-weight: 600; letter-spacing: 0.1em;
}
.story-step .story-key small { display: block; color: var(--text-muted); font-size: 0.7rem; letter-spacing: 0.2em; margin-top: 6px; }
.story-step h3 { font-size: 1.2rem; color: var(--green-deep); margin-bottom: 12px; }
.story-step p { color: var(--text-light); line-height: 2; font-size: 0.92rem; }

/* --- 商品カテゴリタイル --- */
.category-tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cat-tile {
  background: var(--white); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px 26px; text-align: center; transition: transform var(--transition), box-shadow var(--transition);
}
.cat-tile:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.cat-tile .cat-emoji { font-size: 1.8rem; margin-bottom: 12px; }
.cat-tile h3 { font-size: 1.05rem; color: var(--green-deep); margin-bottom: 8px; }
.cat-tile p { font-size: 0.85rem; color: var(--text-light); line-height: 1.8; }

/* --- プレースホルダ表示（未確定を明示） --- */
.ph {
  background: repeating-linear-gradient(45deg, #fff7f4, #fff7f4 10px, #fdeee9 10px, #fdeee9 20px);
  border: 1px dashed var(--accent);
  color: var(--accent-hover);
  border-radius: var(--radius-sm);
  padding: 2px 8px; font-size: 0.82rem; font-weight: 600;
  display: inline-block;
}
.ph-block {
  border: 1px dashed var(--accent);
  background: #fff7f4;
  border-radius: var(--radius-sm);
  padding: 16px 18px; color: var(--accent-hover);
  font-size: 0.85rem; line-height: 1.8;
}
.ph-note { font-size: 0.74rem; color: var(--text-muted); margin-top: 6px; }

/* --- テスト用バナー（本番では削除） --- */
.test-ribbon {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 200;
  background: var(--accent); color: #fff; text-align: center;
  font-size: 0.74rem; letter-spacing: 0.08em; padding: 6px 12px;
  font-family: 'Noto Sans JP', sans-serif;
}
@media (max-width: 768px) {
  .pillars, .category-tiles { grid-template-columns: 1fr; }
  .story-step { grid-template-columns: 1fr; gap: 12px; padding: 28px 0; }
}

/* --- お問い合わせ下部：連絡先（新デザイン） --- */
.contact-methods { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-top:8px; }
.contact-method {
  background:var(--white); border:1px solid var(--border); border-radius:var(--radius);
  padding:38px 28px; text-align:center; box-shadow:var(--shadow-sm);
  transition:transform var(--transition), box-shadow var(--transition);
}
.contact-method:hover { transform:translateY(-5px); box-shadow:var(--shadow-lg); }
.contact-method .cm-icon {
  width:62px; height:62px; border-radius:50%; background:var(--green-pale);
  display:flex; align-items:center; justify-content:center; margin:0 auto 18px; font-size:1.5rem;
}
.contact-method h3 { font-size:0.74rem; letter-spacing:0.18em; text-transform:uppercase; color:var(--green); margin-bottom:12px; }
.contact-method p { font-size:0.92rem; color:var(--text); line-height:1.85; }
.contact-method a { color:var(--green); font-weight:600; }
@media (max-width:768px){ .contact-methods{ grid-template-columns:1fr; } }

/* --- TOPヒーロー：2枚クロスフェード スライド --- */
.hero { overflow: hidden; }
.hero-slides { position:absolute; inset:0; z-index:0; }
.hero-slide {
  position:absolute; inset:0;
  background-size:cover; background-position:center; background-repeat:no-repeat;
  opacity:0; animation: heroSlide 14s ease-in-out infinite;
  will-change: opacity;
}
.hero-slide:nth-child(1){ animation-delay: 0s; }
.hero-slide:nth-child(2){ animation-delay: -7s; }
@keyframes heroSlide {
  0%   { opacity: 1; }
  42%  { opacity: 1; }
  50%  { opacity: 0; }
  92%  { opacity: 0; }
  100% { opacity: 1; }
}
.hero::before { z-index: 1; }
.hero .hero-inner { z-index: 2; }
@media (prefers-reduced-motion: reduce) {
  .hero-slide { animation: none; }
  .hero-slide:nth-child(1){ opacity: 1; }
}