/* ===== SITY ADDITIONS v2 ===== */

/* Header logo */
.site-logo-img { width: 44px; height: 44px; border-radius: var(--radius-md); object-fit: cover; background: #fff; padding: 2px; display: block; }

.footer-logo { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-4); }
.footer-logo-img { width: 40px; height: 40px; border-radius: var(--radius-md); object-fit: cover; background: #fff; padding: 2px; display: block; }
.footer-logo-text { font-family: var(--font-display); font-weight: 700; font-size: var(--text-lg); color: var(--color-text); letter-spacing: 0.05em; }
.footer-group { font-size: var(--text-xs); color: rgba(249,248,244,0.72); margin-top: var(--space-3); line-height: 1.7; }
.footer-group a { color: rgba(249,248,244,0.92); text-decoration: underline; text-underline-offset: 2px; }
.footer-group a:hover { color: #b7bcc2; }

.footer-inner { display: flex; flex-direction: column; gap: var(--space-10); }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-8); }
.footer-heading { font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.1em; color: var(--color-text-muted); margin-bottom: var(--space-4); text-transform: uppercase; }
.footer-links { display: flex; flex-direction: column; gap: var(--space-2); }
.footer-links a { font-size: var(--text-sm); color: var(--color-text-muted); transition: color var(--transition-interactive); }
.footer-links a:hover { color: var(--color-primary); }
.footer-bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--space-4); padding-top: var(--space-6); border-top: 1px solid var(--color-divider); }
.footer-policy { font-size: var(--text-xs); color: var(--color-text-muted); }
.footer-policy:hover { color: var(--color-primary); }

@media (max-width: 768px) {
  .footer-top { grid-template-columns: 1fr; gap: var(--space-6); }
}

/* ===== Robust image frame with graceful fallback ===== */
.img-frame {
  position: relative;
  background: var(--color-surface-offset);
  border-radius: var(--radius-xl);
  overflow: hidden;
  isolation: isolate;
}
.img-frame img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  position: relative;
  z-index: 1;
}
.img-frame-fallback {
  position: absolute; inset: 0;
  display: none;
  align-items: center; justify-content: center;
  color: var(--color-text-faint);
  background: var(--color-surface-offset);
  z-index: 0;
}
.img-frame--broken img { display: none; }
.img-frame--broken .img-frame-fallback { display: flex; }

.hero-image, .service-image, .service-card-image img, .values-image, .system-image { background: var(--color-surface-offset); }

/* Mobile nav */
.btn-menu {
  display: none;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  border-radius: var(--radius-full);
  border: 1px solid oklch(from var(--color-text) l c h / 0.15);
  color: var(--color-text);
}
.mobile-nav {
  display: none;
  position: fixed; top: 0; right: 0;
  width: min(320px, 84vw); height: 100dvh;
  background: var(--color-surface);
  box-shadow: var(--shadow-lg);
  transform: translateX(100%);
  transition: transform 280ms cubic-bezier(0.16,1,0.3,1);
  z-index: 200;
  padding: var(--space-20) var(--space-6) var(--space-6);
}
.mobile-nav.open { transform: translateX(0); }
.mobile-nav ul { display: flex; flex-direction: column; gap: var(--space-5); }
.mobile-nav a { font-size: var(--text-base); font-weight: 600; color: var(--color-text); }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .btn-menu { display: flex; }
  .mobile-nav { display: block; }
}

/* System / App showcase section */
.system-section { background: var(--color-surface-offset); }
.system-inner { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-16); align-items: center; }
.system-points { display: flex; flex-direction: column; gap: var(--space-5); margin-top: var(--space-8); }
.system-points li { display: flex; gap: var(--space-4); align-items: flex-start; font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.8; }
.system-point-icon {
  flex-shrink: 0; width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-lg);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
}
.system-image-frame { width: 100%; aspect-ratio: 4/3; box-shadow: var(--shadow-lg); }
@media (max-width: 768px) { .system-inner { grid-template-columns: 1fr; } }

/* Business model note box */
.business-model-note {
  margin-top: var(--space-12);
  padding: var(--space-6) var(--space-8);
  border-radius: var(--radius-lg);
  background: var(--color-primary-highlight);
  border: 1px solid color-mix(in oklab, var(--color-primary) 25%, transparent);
}
.business-model-title { font-size: var(--text-base); font-weight: 700; color: var(--color-primary); margin-bottom: var(--space-2); }
.business-model-desc { font-size: var(--text-sm); color: var(--color-text); line-height: 1.9; }

/* Company overview: multi-row grid */
.company-grid { display: grid; grid-template-columns: minmax(140px, 200px) 1fr; }
.company-row { display: contents; }
.company-label, .company-value {
  padding: var(--space-5) var(--space-4);
  border-bottom: 1px solid color-mix(in oklab, var(--color-divider) 78%, transparent);
}
.company-row:last-child .company-label,
.company-row:last-child .company-value { border-bottom: none; }
.company-label { font-size: var(--text-sm); font-weight: 600; color: var(--color-text-muted); }
.company-value { font-size: var(--text-sm); line-height: 1.9; color: var(--color-text); }
.company-value .stack { display: grid; gap: 4px; }
.company-value a { color: var(--color-primary); }
.company-contact-links { display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-5); }
.company-contact-links a { color: var(--color-primary); text-decoration: none; }
@media (max-width: 640px) {
  .company-grid { grid-template-columns: 1fr; }
  .company-label { padding-bottom: var(--space-1); border-bottom: none; font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.05em; }
  .company-value { padding-top: 0; }
}

/* Contact form */
.contact-form { max-width: 640px; margin-inline: auto; margin-top: var(--space-10); display: flex; flex-direction: column; gap: var(--space-5); text-align: left; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.form-row { display: flex; flex-direction: column; gap: var(--space-2); }
.form-row label { font-size: var(--text-sm); font-weight: 600; color: var(--color-text); }
.form-row .required { color: var(--color-error); font-size: var(--text-xs); font-weight: 700; margin-left: var(--space-1); }
.form-row input, .form-row select, .form-row textarea {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid #8a8984;
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--text-sm);
}
.form-row input::placeholder, .form-row textarea::placeholder { color: #6b6a66; opacity: 1; }
.form-row input:focus, .form-row select:focus, .form-row textarea:focus { outline: 3px solid var(--color-primary); outline-offset: 2px; }
.contact-btn--form { align-self: center; border: none; cursor: pointer; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }

.form-alert {
  max-width: 640px; margin-inline: auto; margin-top: var(--space-6);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  text-align: left;
}
.form-alert--error {
  background: var(--color-error-highlight);
  color: var(--color-error);
  border: 1px solid color-mix(in oklab, var(--color-error) 40%, transparent);
}

/* Toast */
.contact-toast {
  position: fixed; bottom: var(--space-6); left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--color-primary); color: var(--color-text-inverse);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  font-size: var(--text-sm);
  max-width: 90vw;
  opacity: 0;
  transition: opacity 300ms, transform 300ms;
  z-index: 300;
}
.contact-toast.visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Privacy policy page */
.policy-page { padding-block: clamp(var(--space-16), 8vw, var(--space-24)); }
.policy-header { margin-bottom: var(--space-10); }
.policy-body { max-width: 720px; display: flex; flex-direction: column; gap: var(--space-5); }
.policy-body h2 { font-size: var(--text-lg); color: var(--color-text); margin-top: var(--space-6); }
.policy-body p { color: var(--color-text-muted); line-height: 1.9; }
.policy-body a { color: var(--color-primary); }

/* ハニーポット（ボット対策）: 画面外に配置して人間には見えないようにする */
.sity-hp-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* reCAPTCHA v2 表示調整 */
.form-row--recaptcha {
  display: flex;
  align-items: center;
  overflow: hidden;
}

.form-row--recaptcha .g-recaptcha {
  max-width: 100%;
}

@media (max-width: 380px) {
  .form-row--recaptcha .g-recaptcha {
    transform: scale(0.88);
    transform-origin: left top;
    margin-bottom: -8px;
  }
}