/* 株式会社一杯 — Corporate Site Styles */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;600;700;900&family=Noto+Serif+JP:wght@500;700&display=swap');

:root {
  --color-primary: #1a365d;
  --color-primary-light: #2c5282;
  --color-accent: #c53030;
  --color-accent-soft: #fed7d7;
  --color-bg: #faf9f7;
  --color-surface: #ffffff;
  --color-text: #1a202c;
  --color-text-muted: #4a5568;
  --color-border: #e2e8f0;
  --color-footer: #0f172a;
  --font-sans: 'Noto Sans JP', system-ui, sans-serif;
  --font-serif: 'Noto Serif JP', serif;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(26, 54, 93, 0.08);
  --header-h: 72px;
  --page-x: clamp(20px, 5vw, 48px);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary-light); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-accent); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 9999;
  padding: 12px 20px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius);
  font-weight: 600;
}
.skip-link:focus { top: 16px; }

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: max(var(--page-x), env(safe-area-inset-left, 0px));
  padding-right: max(var(--page-x), env(safe-area-inset-right, 0px));
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text);
  text-decoration: none;
  font-weight: 700;
}
.logo:hover { color: var(--color-text); }

.logo-mark {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
}

.logo-text { line-height: 1.2; }
.logo-text small {
  display: block;
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 8px;
}

.nav-desktop a {
  padding: 8px 14px;
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 8px;
}
.nav-desktop a:hover { background: #edf2f7; color: var(--color-primary); }

.nav-cta {
  background: var(--color-primary) !important;
  color: #fff !important;
  margin-left: 8px;
}
.nav-cta:hover { background: var(--color-primary-light) !important; color: #fff !important; }

.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mobile {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 24px 24px;
  box-shadow: var(--shadow);
}
.nav-mobile.is-open { display: block; }
.nav-mobile a {
  display: block;
  padding: 14px 0;
  color: var(--color-text);
  font-weight: 500;
  border-bottom: 1px solid var(--color-border);
}
.nav-mobile a:last-child { border-bottom: none; }

@media (min-width: 900px) {
  .nav-desktop { display: flex; }
  .menu-toggle { display: none; }
  .nav-mobile { display: none !important; }
}

/* Main layout */
main { padding-top: var(--header-h); }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: max(var(--page-x), env(safe-area-inset-left, 0px));
  padding-right: max(var(--page-x), env(safe-area-inset-right, 0px));
  width: 100%;
}
.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }

.page-hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #2d3748 100%);
  color: #fff;
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}
.page-hero--trade {
  background:
    linear-gradient(135deg, rgba(26, 54, 93, 0.92) 0%, rgba(44, 82, 130, 0.88) 100%),
    url('../images/card-trade.svg') center / cover no-repeat;
}
.page-hero--realestate {
  background:
    linear-gradient(135deg, rgba(26, 54, 93, 0.9) 0%, rgba(74, 85, 104, 0.88) 100%),
    url('../images/card-realestate.svg') center / cover no-repeat;
}
.page-hero--itai {
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(26, 54, 93, 0.88) 100%),
    url('../images/card-itai.svg') center / cover no-repeat;
}
.page-hero--about {
  background:
    linear-gradient(135deg, rgba(26, 54, 93, 0.9) 0%, rgba(44, 82, 130, 0.85) 100%),
    url('../images/about-osaka.svg') center / cover no-repeat;
}
.page-hero--contact {
  background:
    linear-gradient(135deg, rgba(26, 54, 93, 0.93) 0%, rgba(45, 55, 72, 0.9) 100%),
    url('../images/hero-visual.svg') center / cover no-repeat;
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin: 0 0 12px;
  letter-spacing: 0.02em;
}
.page-hero p {
  margin: 0;
  opacity: 0.9;
  max-width: 640px;
}
.breadcrumb {
  font-size: 0.85rem;
  margin-bottom: 16px;
  opacity: 0.8;
}
.breadcrumb a { color: rgba(255,255,255,0.85); }
.breadcrumb a:hover { color: #fff; }

/* Icons */
.icon {
  width: 1.35em;
  height: 1.35em;
  flex-shrink: 0;
}
.icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  box-shadow: 0 8px 20px rgba(26, 54, 93, 0.2);
}
.icon-wrap .icon { width: 26px; height: 26px; }
.icon-wrap--accent {
  background: linear-gradient(135deg, var(--color-accent) 0%, #e53e3e 100%);
  box-shadow: 0 8px 20px rgba(197, 48, 48, 0.25);
}
.icon-wrap--soft {
  background: #ebf4ff;
  color: var(--color-primary);
  box-shadow: none;
}

/* Home hero */
.hero {
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  background: var(--color-primary);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(15, 23, 42, 0.94) 0%, rgba(26, 54, 93, 0.82) 45%, rgba(26, 54, 93, 0.45) 100%),
    url('../images/hero-visual.svg') center / cover no-repeat;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(197, 48, 48, 0.18) 0%, transparent 45%);
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 48px;
  align-items: center;
  padding-top: 72px;
  padding-bottom: 72px;
  width: 100%;
}
@media (min-width: 900px) {
  .hero-inner { grid-template-columns: 1.1fr 0.9fr; gap: 64px; padding-top: 80px; padding-bottom: 80px; }
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  padding-right: 8px;
}
.hero-visual {
  position: relative;
  z-index: 2;
  display: none;
  padding: 0 8px;
}
@media (min-width: 900px) {
  .hero-visual { display: flex; justify-content: center; align-items: center; }
}
.hero-visual img {
  width: 100%;
  max-width: 420px;
  min-width: 200px;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  filter: drop-shadow(0 24px 48px rgba(0, 0, 0, 0.35));
  animation: hero-float 6s ease-in-out infinite;
}
@keyframes hero-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(to top, var(--color-bg), transparent);
  z-index: 1;
  pointer-events: none;
}
.hero-label {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 24px;
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 20px;
  letter-spacing: 0.04em;
}
.hero-lead {
  font-size: 1.05rem;
  opacity: 0.92;
  margin: 0 0 36px;
  line-height: 2;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
  text-decoration: none;
  font-family: inherit;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(197, 48, 48, 0.35);
}
.btn-primary:hover { background: #9b2c2c; color: #fff; }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.5);
}
.btn-outline:hover { background: rgba(255,255,255,0.1); color: #fff; border-color: #fff; }
.btn-dark {
  background: var(--color-primary);
  color: #fff;
}
.btn-dark:hover { background: var(--color-primary-light); color: #fff; }

/* Section titles */
.section-header { text-align: center; margin-bottom: 48px; }
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--color-primary);
}
.section-desc {
  max-width: 600px;
  margin: 0 auto;
  color: var(--color-text-muted);
}

/* Cards */
.card-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .card-grid { grid-template-columns: repeat(3, 1fr); }
  .card-grid-2 { grid-template-columns: repeat(2, 1fr); }
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  overflow: hidden;
  transition: box-shadow 0.35s, transform 0.35s, border-color 0.35s;
}
.card:hover {
  box-shadow: 0 16px 48px rgba(26, 54, 93, 0.14);
  transform: translateY(-6px);
  border-color: #cbd5e0;
}
.card-media {
  position: relative;
  height: 200px;
  overflow: hidden;
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.card:hover .card-media img { transform: scale(1.06); }
.card-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.55) 0%, transparent 55%);
}
.card-media-badge {
  position: absolute;
  bottom: 16px;
  left: 16px;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--color-primary);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}
.card-media-badge .icon { width: 24px; height: 24px; }
.card-body { padding: 28px; }
.card-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 100px;
  background: #ebf8ff;
  color: var(--color-primary-light);
  margin-bottom: 12px;
}
.card-tag.coming { background: #fef3c7; color: #92400e; }
.card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--color-primary);
}
.card p {
  margin: 0 0 20px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}
.card-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.card-link::after { content: '→'; transition: transform 0.2s; }
.card:hover .card-link::after { transform: translateX(4px); }

/* About strip */
.about-strip {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.about-grid {
  display: grid;
  gap: 40px;
  align-items: center;
}
@media (min-width: 768px) {
  .about-grid { grid-template-columns: 1fr 1fr; }
}
.about-visual {
  position: relative;
  aspect-ratio: 4/3;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(26, 54, 93, 0.18);
}
.about-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.about-visual-caption {
  position: absolute;
  left: 24px;
  bottom: 24px;
  padding: 12px 18px;
  background: rgba(255, 255, 255, 0.92);
  border-radius: 10px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

/* Stats */
.stats-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}
@media (min-width: 600px) {
  .stats-row { grid-template-columns: repeat(4, 1fr); }
}
.stat-item {
  text-align: center;
  padding: 20px 16px;
  background: #f7fafc;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.stat-item:hover {
  border-color: #cbd5e0;
  box-shadow: 0 4px 16px rgba(26, 54, 93, 0.06);
}
.stat-item .icon-wrap {
  width: 40px;
  height: 40px;
  margin: 0 auto 10px;
  border-radius: 10px;
}
.stat-item .icon-wrap .icon { width: 20px; height: 20px; }
.stat-item strong {
  display: block;
  font-size: 1.35rem;
  color: var(--color-primary);
  font-weight: 700;
}
.stat-item span {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

/* CTA band */
.cta-band {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(26, 54, 93, 0.96) 0%, rgba(44, 82, 130, 0.94) 100%),
    url('../images/hero-visual.svg') center / cover no-repeat;
  color: #fff;
  border-radius: 24px;
  padding: 56px 32px;
  text-align: center;
}
.cta-band .section-title { color: #fff; }
.cta-band .section-desc { color: rgba(255, 255, 255, 0.85); }
.cta-band .section-label { color: #fed7d7; }

/* Info table */
.info-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.info-table th,
.info-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}
.info-table tr:last-child th,
.info-table tr:last-child td { border-bottom: none; }
.info-table th {
  width: 30%;
  min-width: 140px;
  background: #f7fafc;
  font-weight: 600;
  color: var(--color-primary);
  font-size: 0.9rem;
}
.info-table td { font-size: 0.95rem; }

/* Legal content */
.legal-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 40px;
  max-width: 900px;
}
.legal-content h2 {
  font-size: 1.15rem;
  color: var(--color-primary);
  margin: 32px 0 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-border);
}
.legal-content h2:first-child { margin-top: 0; }
.legal-content p, .legal-content li {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}
.legal-content ul, .legal-content ol {
  padding-left: 1.5em;
}
.legal-updated {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

/* Contact form */
.contact-layout {
  display: grid;
  gap: 40px;
}
@media (min-width: 768px) {
  .contact-layout { grid-template-columns: 1fr 1.2fr; }
}
.contact-info-box {
  background: var(--color-primary);
  color: #fff;
  padding: 36px;
  border-radius: 16px;
}
.contact-info-box h2 {
  font-size: 1.25rem;
  margin: 0 0 24px;
}
.contact-info-item {
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}
.contact-info-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.contact-info-item strong {
  display: block;
  font-size: 0.8rem;
  opacity: 0.75;
  margin-bottom: 4px;
}
.contact-info-item a { color: #fff; }
.contact-line {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #fff !important;
}
.contact-info-box .icon-wrap--soft {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 10px;
}
.contact-info-box .icon-wrap--soft .icon { width: 18px; height: 18px; }

.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 36px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.form-group label .required {
  color: var(--color-accent);
  font-size: 0.75rem;
  margin-left: 6px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
  outline: none;
}
.form-group textarea { min-height: 160px; resize: vertical; }
.form-note {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}
.form-privacy {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.85rem;
  margin-bottom: 24px;
}
.form-privacy input { margin-top: 4px; width: auto; }

/* Notice banner */
.notice-banner {
  background: #fffbeb;
  border: 1px solid #fcd34d;
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 0.9rem;
  color: #92400e;
  margin-bottom: 32px;
}

/* Footer */
.site-footer {
  background: var(--color-footer);
  color: rgba(255,255,255,0.85);
  padding: 64px 0 32px;
  margin-top: 80px;
}
.footer-grid {
  display: grid;
  gap: 40px;
  margin-bottom: 48px;
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; }
}
.footer-brand .logo-mark { margin-bottom: 16px; }
.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.8;
  opacity: 0.75;
  margin: 0;
}
.footer-col h4 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 16px;
  color: #fff;
}
.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
}
.footer-col a:hover { color: #fff; }
.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.8rem;
  opacity: 0.6;
}
.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-legal-links a { color: rgba(255,255,255,0.7); }

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2000;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 20px 24px;
  box-shadow: 0 -4px 24px rgba(0,0,0,0.1);
  display: none;
}
.cookie-banner.is-visible { display: block; }
.cookie-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.cookie-inner p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  flex: 1;
  min-width: 280px;
}
.cookie-actions { display: flex; gap: 12px; }

/* Business detail */
.feature-list {
  display: grid;
  gap: 20px;
}
@media (min-width: 600px) {
  .feature-list { grid-template-columns: repeat(2, 1fr); }
}
.feature-item {
  display: flex;
  gap: 18px;
  padding: 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  transition: box-shadow 0.3s, transform 0.3s;
}
.feature-item:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.feature-icon {
  flex-shrink: 0;
}
.feature-num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}
.feature-item h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--color-primary);
}
.feature-item p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.license-box {
  background: #f0fff4;
  border: 1px solid #9ae6b4;
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-top: 32px;
  font-size: 0.9rem;
}
.license-box strong { color: #276749; }

/* ============================================================
   Mobile & touch optimizations
   ============================================================ */

@media (max-width: 899px) {
  :root {
    --header-h: 64px;
    --page-x: 24px;
  }

  .section { padding-top: 56px; padding-bottom: 56px; }
  .section-sm { padding-top: 40px; padding-bottom: 40px; }
  .section-header { margin-bottom: 36px; }

  /* Hero */
  .hero {
    min-height: auto;
  }

  .hero-bg {
    background:
      linear-gradient(180deg, rgba(15, 23, 42, 0.96) 0%, rgba(26, 54, 93, 0.92) 55%, rgba(26, 54, 93, 0.88) 100%),
      url('../images/hero-visual.svg') 70% center / 140% no-repeat;
  }

  .hero-inner {
    padding-top: 40px;
    padding-bottom: 48px;
    gap: 0;
  }

  .hero-content {
    padding-right: 0;
    max-width: none;
  }

  .hero-label {
    font-size: 0.72rem;
    margin-bottom: 16px;
    letter-spacing: 0.06em;
  }

  .hero h1 {
    font-size: clamp(1.6rem, 6.8vw, 2rem);
    line-height: 1.45;
    letter-spacing: 0.02em;
    margin-bottom: 16px;
  }

  .hero-lead {
    font-size: 0.92rem;
    line-height: 1.85;
    margin-bottom: 28px;
    opacity: 0.95;
  }

  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }

  .hero-actions .btn {
    width: 100%;
    padding: 15px 20px;
  }

  /* Page hero */
  .page-hero {
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .page-hero h1 {
    font-size: clamp(1.5rem, 6vw, 1.85rem);
    line-height: 1.4;
  }

  .page-hero p {
    font-size: 0.92rem;
    line-height: 1.75;
  }

  .breadcrumb {
    font-size: 0.78rem;
    line-height: 1.6;
    word-break: break-all;
  }

  /* Header / logo */
  .logo {
    gap: 10px;
    min-width: 0;
  }

  .logo-mark {
    width: 36px;
    height: 36px;
    font-size: 1rem;
    flex-shrink: 0;
  }

  .logo-text {
    font-size: 0.92rem;
    min-width: 0;
  }

  .logo-text small {
    font-size: 0.58rem;
    letter-spacing: 0.03em;
  }

  .nav-mobile {
    padding: 12px max(var(--page-x), env(safe-area-inset-right, 0px)) 20px max(var(--page-x), env(safe-area-inset-left, 0px));
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .nav-mobile a {
    padding: 16px 0;
    font-size: 0.95rem;
  }

  /* Cards */
  .card-body { padding: 22px 20px; }
  .card-media { height: 168px; }
  .card h3 { font-size: 1.05rem; }
  .card p { font-size: 0.88rem; margin-bottom: 16px; }

  /* About */
  .about-grid { gap: 32px; }
  .about-visual { border-radius: 16px; }
  .about-visual-caption {
    left: 16px;
    bottom: 16px;
    padding: 10px 14px;
    font-size: 0.75rem;
  }

  .stats-row {
    gap: 12px;
    margin-top: 24px;
  }

  .stat-item {
    padding: 16px 10px;
  }

  .stat-item strong { font-size: 1.15rem; }
  .stat-item span { font-size: 0.72rem; }

  /* CTA */
  .cta-band {
    padding: 40px 20px;
    border-radius: 16px;
  }

  /* Feature items */
  .feature-item {
    padding: 20px;
    gap: 14px;
  }

  .feature-item h3 { font-size: 0.95rem; }
  .feature-item p { font-size: 0.86rem; line-height: 1.7; }

  .icon-wrap {
    width: 46px;
    height: 46px;
    border-radius: 12px;
  }

  .icon-wrap .icon { width: 22px; height: 22px; }

  /* Tables — card layout on mobile */
  .info-table {
    border: none;
    background: transparent;
    border-radius: 0;
  }

  .info-table tbody { display: block; }

  .info-table tr {
    display: block;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    margin-bottom: 12px;
    overflow: hidden;
  }

  .info-table tr:last-child { margin-bottom: 0; }

  .info-table th,
  .info-table td {
    display: block;
    width: 100%;
    min-width: 0;
    padding: 14px 16px;
    border-bottom: none;
  }

  .info-table th {
    padding-bottom: 6px;
    background: #f7fafc;
    font-size: 0.78rem;
    color: var(--color-text-muted);
  }

  .info-table td {
    padding-top: 0;
    padding-bottom: 14px;
    font-size: 0.9rem;
    line-height: 1.7;
    word-break: break-word;
  }

  /* Legal */
  .legal-content {
    padding: 24px 20px;
    border-radius: 14px;
  }

  .legal-content h2 {
    font-size: 1.05rem;
    margin-top: 28px;
  }

  .legal-content p,
  .legal-content li {
    font-size: 0.9rem;
    line-height: 1.75;
  }

  /* Contact */
  .contact-info-box,
  .form-card {
    padding: 24px 20px;
    border-radius: 14px;
  }

  .contact-line {
    flex-wrap: wrap;
    word-break: break-all;
  }

  .form-group input,
  .form-group textarea,
  .form-group select {
    font-size: 16px; /* iOS zoom 防止 */
  }

  .form-privacy {
    font-size: 0.82rem;
    line-height: 1.6;
  }

  /* Footer */
  .site-footer {
    padding: 48px 0 24px;
    margin-top: 56px;
    padding-bottom: max(24px, env(safe-area-inset-bottom, 0px));
  }

  .footer-grid {
    gap: 28px;
    margin-bottom: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .footer-legal-links {
    flex-direction: column;
    gap: 8px;
  }

  /* Cookie */
  .cookie-banner {
    padding: 16px max(var(--page-x), env(safe-area-inset-right, 0px)) max(16px, env(safe-area-inset-bottom, 0px)) max(var(--page-x), env(safe-area-inset-left, 0px));
  }

  .cookie-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .cookie-inner p {
    min-width: 0;
    font-size: 0.82rem;
    line-height: 1.6;
  }

  .cookie-actions .btn {
    width: 100%;
  }

  .notice-banner {
    padding: 14px 16px;
    font-size: 0.85rem;
    line-height: 1.65;
  }

  .notice-banner code {
    word-break: break-all;
  }
}

@media (max-width: 380px) {
  :root { --page-x: 20px; }

  .logo-text { font-size: 0.85rem; }
  .hero h1 { font-size: 1.5rem; }
  .stats-row { grid-template-columns: 1fr 1fr; gap: 10px; }
}

/* Disable hover lift on touch devices */
@media (hover: none) {
  .card:hover,
  .feature-item:hover,
  .btn:hover {
    transform: none;
  }

  .card:hover .card-media img {
    transform: none;
  }
}

/* Body scroll lock when mobile menu open */
body.menu-open {
  overflow: hidden;
  position: fixed;
  width: 100%;
}