/* Web Kai — mobile: same structure as desktop (loads last) */

@media (max-width: 900px) {
  :root {
    --scroll-dock-h: 92px;
    --scroll-dock-offset: max(clamp(36px, 5.5vh, 64px), calc(env(safe-area-inset-bottom, 0px) + 16px));
    --scroll-dock-reserve: calc(var(--scroll-dock-offset) + var(--scroll-dock-h) + 14px);
    --layout-card-max: min(780px, 92vw);
    --layout-contact-max: min(780px, 92vw);
    --layout-pad-x: clamp(16px, 4vw, 24px);
  }

  html,
  body {
    overflow-x: clip;
    max-width: 100%;
  }

  .site-scroll,
  .section,
  .section-inner,
  .section-split,
  .section-content {
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
  }

  /*
   * 右切れ防止: nowrap だけ解除。改行は keep-all（PC同様）で自然に。
   * overflow-wrap: anywhere は行からはみ出すときだけ折る（単語途中の不自然な分割を避ける）
   */
  .business-text,
  main p,
  main h3,
  main .section-lead,
  .section-body,
  .hero-lead,
  .hero-lead p,
  .service-item-copy,
  .service-item-copy p {
    max-width: 100% !important;
    word-break: keep-all !important;
    overflow-wrap: anywhere !important;
    white-space: normal !important;
    text-wrap: pretty;
    line-break: strict;
    -webkit-line-break: after-white-space;
  }

  .phrase-keep,
  .catchcopy-keep {
    white-space: normal !important;
    display: inline !important;
  }

  .section {
    padding-top: calc(var(--header-h) + 12px) !important;
    padding-bottom: var(--scroll-dock-reserve) !important;
    justify-content: flex-start !important;
  }

  .section-inner {
    max-height: none !important;
    overflow: visible !important;
    padding-left: var(--layout-pad-x) !important;
    padding-right: var(--layout-pad-x) !important;
  }

  /* Header + nav (cyber drawer, not legacy white panel) */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 100;
  }

  .site-header .header-inner {
    position: relative;
    align-items: center;
    padding-left: var(--layout-pad-x);
    padding-right: var(--layout-pad-x);
  }

  .nav-toggle {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    min-height: 36px;
    padding: 6px 12px;
    margin-left: auto;
    font-family: var(--font-tech, monospace);
    font-size: 0.58rem;
    letter-spacing: 0.14em;
    color: rgba(210, 236, 228, 0.85) !important;
    background: rgba(4, 10, 12, 0.72) !important;
    border: 1px solid rgba(34, 245, 208, 0.22) !important;
    border-radius: 4px;
  }

  .site-nav {
    display: none !important;
    position: absolute !important;
    top: calc(100% + 8px);
    right: 0;
    left: auto;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 6px !important;
    min-width: min(220px, 72vw);
    padding: 10px !important;
    background: rgba(4, 10, 12, 0.94) !important;
    border: 1px solid rgba(34, 245, 208, 0.22) !important;
    border-radius: 8px !important;
    box-shadow:
      0 0 0 1px rgba(0, 0, 0, 0.4) inset,
      0 16px 40px rgba(0, 0, 0, 0.45),
      0 0 24px rgba(34, 245, 208, 0.08) !important;
  }

  .site-nav.is-open {
    display: flex !important;
  }

  .site-nav .site-nav__link {
    width: 100% !important;
    justify-content: flex-start !important;
  }

  /* Hero — single column like desktop narrow */
  .section--hero {
    justify-content: flex-start !important;
  }

  .section--hero .section-inner--hero {
    overflow: visible !important;
    padding-top: clamp(8px, 1.5vh, 16px) !important;
  }

  .section--hero .section-split--hero {
    grid-template-columns: minmax(0, 1fr) !important;
    gap: clamp(14px, 2.5vh, 20px) !important;
    width: 100% !important;
  }

  .section--hero .hero-side,
  .section--hero .hero-main,
  .section--hero .hero-visual {
    grid-column: 1 !important;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
  }

  .section--hero .hero-visual {
    display: none !important;
  }

  .section--hero .brand-mark--hero {
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 100%;
  }

  .section--hero .brand-mark--hero .brand-logo--hero {
    width: clamp(56px, 14vw, 64px) !important;
    height: clamp(56px, 14vw, 64px) !important;
    flex-shrink: 0;
  }

  .section--hero .trade-name {
    min-width: 0;
    word-break: keep-all;
    overflow-wrap: anywhere;
  }

  .section--hero .owner-name {
    max-width: 100%;
    word-break: keep-all;
    overflow-wrap: anywhere;
  }

  .section--hero .catchcopy,
  .section--hero .mask-title,
  .section--hero .mask-title > span,
  .section--hero .mask-title--hero,
  .section--hero .mask-title--hero > span {
    max-width: 100% !important;
    overflow: visible !important;
    word-break: keep-all !important;
    overflow-wrap: anywhere !important;
    white-space: normal !important;
  }

  .hero-main .catchcopy {
    font-size: clamp(1.35rem, 5.8vw, 1.85rem) !important;
    line-height: 1.36 !important;
    margin-bottom: clamp(14px, 2vh, 20px) !important;
  }

  .section--hero .hero-lead {
    width: 100% !important;
    max-width: 100% !important;
    gap: 0.9em !important;
  }

  .section--hero .hero-lead p {
    font-size: clamp(0.86rem, 3.6vw, 0.98rem) !important;
    line-height: 1.72 !important;
    max-width: 100% !important;
  }

  /* Service */
  .section--service-intro .section-split--intro {
    grid-template-columns: 1fr !important;
  }

  .section--service-intro .section-visual--intro {
    display: none !important;
  }

  .section--service .section-inner {
    grid-template-columns: 1fr !important;
    min-height: auto !important;
    align-items: flex-start !important;
    padding-top: 8px !important;
  }

  .section--service .section-content--service {
    max-width: min(760px, 92vw) !important;
    width: 100% !important;
    min-width: 0 !important;
  }

  .section--service-intro .intro-copy,
  .section--service .cyber-panel {
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    box-sizing: border-box;
  }

  .section--service-intro .section-body,
  .section--service .section-lead {
    max-width: 100% !important;
    word-break: keep-all !important;
    overflow-wrap: anywhere !important;
  }

  /* Contact — mirror desktop layout */
  .section--contact {
    justify-content: flex-start !important;
    align-items: stretch !important;
    overflow: visible !important;
    padding-top: calc(var(--header-h) + 10px) !important;
    padding-bottom: calc(var(--scroll-dock-reserve) + 8px) !important;
    scroll-margin-top: calc(var(--header-h) + 12px);
  }

  .section--contact .section-inner--contact {
    align-items: flex-start !important;
    justify-content: flex-start !important;
    max-height: none !important;
    overflow: visible !important;
    width: 100% !important;
    padding-top: clamp(6px, 1vh, 12px) !important;
    padding-bottom: clamp(6px, 1vh, 12px) !important;
  }

  .section--contact .contact-stack--flow,
  .section--contact .section-content.contact-stack,
  .section--contact .section-content.contact-stack--flow {
    max-width: 100% !important;
    width: 100% !important;
    min-width: 0;
    box-sizing: border-box;
  }

  .contact-stack__header {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    overflow: visible !important;
    padding-top: clamp(10px, 1.5vh, 16px);
    padding-bottom: clamp(4px, 0.7vh, 8px);
  }

  /* 導入文のみ: compact の overflow-wrap:normal より優先して右切れ防止 */
  .section--contact .section-body.contact-intro--outside {
    display: block;
    width: 100%;
    max-width: 100% !important;
    min-width: 0;
    box-sizing: border-box;
    word-break: keep-all !important;
    overflow-wrap: anywhere !important;
    white-space: normal !important;
    overflow: visible !important;
  }

  /* 見出し: webkai-headings-unify.css */

  .section--contact .contact-panel {
    width: 100% !important;
    margin-top: clamp(6px, 0.9vh, 10px);
    padding: clamp(10px, 1.3vh, 14px) clamp(12px, 3.5vw, 18px) clamp(6px, 0.85vh, 10px) !important;
    gap: 0 !important;
    overflow: visible !important;
  }

  .contact-panel__grid,
  .contact-panel__body {
    overflow: visible !important;
  }

  /* Form: keep 2-col row + 2x2 radios (PCと同じ) */
  .contact-form__row--duo {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    gap: clamp(6px, 2vw, 10px) !important;
  }

  .contact-form__radio-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    gap: 5px !important;
  }

  .contact-form__radio {
    min-height: 28px !important;
    padding: 4px 6px !important;
  }

  .contact-form__radio span {
    font-size: clamp(0.62rem, 2.6vw, 0.72rem) !important;
    line-height: 1.25 !important;
    word-break: keep-all;
  }

  .contact-form__textarea {
    min-height: 36px !important;
    max-height: 42px !important;
  }

  /* Footer — vertical stack (PCと同じ) */
  .section--contact .footer-inner-wrap,
  .section--contact .footer-profile {
    width: 100%;
    max-width: 100%;
  }

  .section--contact .footer-name,
  .section--contact .footer-scope {
    white-space: normal;
    word-break: keep-all;
  }

  .contact-list--footer .contact-link,
  .contact-list--footer .contact-link--email {
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-all;
  }

  .section--contact .contact-item dd {
    word-break: break-word;
  }

  /* Scroll dock */
  .scroll-dock--global {
    padding: 6px 10px calc(6px + env(safe-area-inset-bottom, 0px));
  }

  .scroll-dock__hint {
    font-size: 0.46rem;
  }
}

/* Very narrow only: stack form columns */
@media (max-width: 360px) {
  .contact-form__row--duo,
  .contact-form__radio-grid {
    grid-template-columns: 1fr !important;
  }
}