/* ========================================
       RESET & BASE
    ======================================== */
    *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

    /* ========================================
       LOADING
    ======================================== */
    #loading {
      position: fixed;
      inset: 0;
      background: var(--white);
      z-index: 9999;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      transition: opacity .7s ease, visibility .7s;
    }

    #loading.hidden { opacity: 0; visibility: hidden; pointer-events: none; }

    .loading-logo {
      width: 260px;
      max-width: 70vw;
      height: auto;
      object-fit: contain;
      margin-bottom: 36px;
      animation: loadFade .8s ease both;
    }

    @keyframes loadFade {
      from { opacity: 0; transform: translateY(12px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    .loading-track {
      width: 200px;
      height: 1px;
      background: #e4e2de;
      overflow: hidden;
    }

    .loading-bar {
      height: 100%;
      width: 0;
      background: var(--black);
      animation: loadBar 1.4s cubic-bezier(.4,0,.2,1) forwards;
    }

    @keyframes loadBar { to { width: 100%; } }

    :root {
      --bg:         #f9f8f6;
      --white:      #ffffff;
      --black:      #1a1a1a;
      --gray-dark:  #2d2d2d;
      --gray-mid:   #6b6b6b;
      --gray-light: #d6d3cc;
      --gray-pale:  #eeece8;
      --accent:     #8b7355;
      --serif-jp:   'Noto Serif JP', serif;
      --sans-jp:    'Noto Sans JP', sans-serif;
      --en:         'Cormorant Garamond', serif;
    }

    html { scroll-behavior: smooth; }

    body {
      font-family: var(--sans-jp);
      background: var(--bg);
      color: var(--black);
      line-height: 1.8;
      font-size: 15px;
      font-weight: 300;
      overflow-x: hidden;
    }

    img { display: block; width: 100%; height: 100%; object-fit: cover; }
    a   { color: inherit; text-decoration: none; }

    /* ========================================
       HEADER
    ======================================== */
    #header {
      position: fixed;
      top: 0; left: 0;
      width: 100%;
      z-index: 100;
      padding: 0 56px;
      height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: background .4s, box-shadow .4s;
    }

    #header.scrolled {
      background: rgba(255,255,255,.97);
      box-shadow: 0 1px 0 rgba(0,0,0,.07);
    }

    /* Logo */
    .h-logo { display: flex; align-items: center; }

    .h-logo-img {
      height: 44px;
      width: auto;
      object-fit: contain;
      filter: brightness(0) invert(1);
      transition: filter .4s;
    }

    #header.scrolled .h-logo-img { filter: none; }

    /* Nav */
    .h-nav { display: flex; align-items: center; gap: 0; }

    .h-nav a {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 4px;
      padding: 0 18px;
      height: 76px;
      border-right: 1px solid rgba(255,255,255,.15);
      transition: background .3s;
      text-align: center;
    }

    .h-nav a:first-child { border-left: 1px solid rgba(255,255,255,.15); }

    .h-nav a:hover { background: rgba(255,255,255,.1); }

    .nav-en {
      font-family: var(--en);
      font-size: 14px;
      font-weight: 400;
      letter-spacing: .16em;
      color: rgba(255,255,255,.92);
      transition: color .3s;
      line-height: 1;
      white-space: nowrap;
    }

    .nav-jp {
      font-family: var(--sans-jp);
      font-size: 9px;
      font-weight: 300;
      letter-spacing: .1em;
      color: rgba(255,255,255,.5);
      transition: color .3s;
      line-height: 1;
      white-space: nowrap;
    }

    .h-nav a:hover .nav-en { color: var(--white); }
    .h-nav a:hover .nav-jp { color: rgba(255,255,255,.75); }

    #header.scrolled .h-nav a {
      border-color: #e0ddd7;
      height: 76px;
    }

    #header.scrolled .h-nav a:hover { background: var(--bg); }

    #header.scrolled .nav-en { color: var(--gray-dark); }
    #header.scrolled .nav-jp { color: var(--gray-mid); }
    #header.scrolled .h-nav a:hover .nav-en { color: var(--black); }
    #header.scrolled .h-nav a:hover .nav-jp { color: var(--gray-dark); }

    /* CONTACT - standalone box */
    .h-nav-contact {
      margin-left: 20px;
      padding: 0 22px !important;
      height: 44px !important;
      border: 1px solid rgba(255,255,255,.6) !important;
      border-left: 1px solid rgba(255,255,255,.6) !important;
      border-radius: 0;
      gap: 3px;
      transition: background .3s, border-color .3s !important;
    }

    .h-nav-contact:hover { background: rgba(255,255,255,.18) !important; }

    #header.scrolled .h-nav-contact {
      border-color: var(--black) !important;
      height: 44px !important;
    }

    #header.scrolled .h-nav-contact:hover {
      background: var(--black) !important;
    }

    #header.scrolled .h-nav-contact:hover .nav-en,
    #header.scrolled .h-nav-contact:hover .nav-jp { color: var(--white); }

    /* Hamburger */
    .h-burger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      padding: 6px;
    }

    .h-burger span {
      display: block;
      width: 26px;
      height: 1px;
      background: var(--white);
      transition: background .4s;
    }

    #header.scrolled .h-burger span { background: var(--black); }

    /* ========================================
       MOBILE NAV
    ======================================== */
    #mobileNav {
      display: none;
      position: fixed;
      inset: 0;
      background: var(--white);
      z-index: 99;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 36px;
      opacity: 0;
      pointer-events: none;
      transition: opacity .4s;
    }

    #mobileNav.open {
      display: flex;
      opacity: 1;
      pointer-events: all;
    }

    #mobileNav a {
      font-family: var(--serif-jp);
      font-size: 20px;
      font-weight: 400;
      letter-spacing: .15em;
    }

    .mobile-close {
      position: absolute;
      top: 24px; right: 28px;
      font-size: 32px;
      cursor: pointer;
      color: var(--black);
      font-weight: 300;
    }

    /* ========================================
       HERO
    ======================================== */
    #hero {
      position: relative;
      width: 100%;
      height: 100vh;
      min-height: 640px;
      overflow: hidden;
    }

    /* Slides */
    .hero-slide {
      position: absolute;
      inset: 0;
      opacity: 0;
      transition: opacity 1.4s ease;
    }

    .hero-slide.active { opacity: 1; }

    .hero-slide img {
      width: 100%; height: 100%;
      object-fit: cover;
      transform: scale(1.06);
      transition: transform 9s ease;
    }

    .hero-slide.active img { transform: scale(1); }

    /* Overlay */
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(
        110deg,
        rgba(0,0,0,.52) 0%,
        rgba(0,0,0,.24) 55%,
        rgba(0,0,0,.08) 100%
      );
    }

    /* Content */
    .hero-content {
      position: absolute;
      bottom: 16%;
      left: 9%;
      color: var(--white);
    }

    .hero-eyebrow {
      font-family: var(--en);
      font-size: 11px;
      letter-spacing: .45em;
      font-weight: 300;
      color: rgba(255,255,255,.65);
      margin-bottom: 22px;
      display: flex;
      align-items: center;
      gap: 18px;
    }

    .hero-eyebrow::before {
      content: '';
      display: block;
      width: 44px;
      height: 1px;
      background: rgba(255,255,255,.45);
    }

    .hero-h1 {
      font-family: var(--serif-jp);
      font-size: clamp(42px, 6vw, 80px);
      font-weight: 400;
      line-height: 1.45;
      letter-spacing: .06em;
      margin-bottom: 28px;
      text-shadow: 0 2px 24px rgba(0,0,0,.25);
    }

    .hero-sub {
      font-family: var(--en);
      font-size: clamp(13px, 1.4vw, 17px);
      font-weight: 300;
      letter-spacing: .34em;
      font-style: italic;
      color: rgba(255,255,255,.68);
    }

    /* Scroll indicator */
    .hero-scroll {
      position: absolute;
      bottom: 44px;
      right: 52px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 10px;
      color: rgba(255,255,255,.5);
      font-family: var(--en);
      font-size: 9px;
      letter-spacing: .3em;
    }

    .hero-scroll::after {
      content: '';
      display: block;
      width: 1px;
      height: 64px;
      background: rgba(255,255,255,.35);
      animation: scrollAnim 2.2s ease-in-out infinite;
    }

    @keyframes scrollAnim {
      0%   { transform: scaleY(0); transform-origin: top; }
      50%  { transform: scaleY(1); transform-origin: top; }
      51%  { transform: scaleY(1); transform-origin: bottom; }
      100% { transform: scaleY(0); transform-origin: bottom; }
    }

    /* Slide dots */
    .hero-dots {
      position: absolute;
      bottom: 44px;
      left: 9%;
      display: flex;
      gap: 10px;
    }

    .hero-dot {
      width: 28px;
      height: 1px;
      background: rgba(255,255,255,.3);
      cursor: pointer;
      transition: background .3s;
    }

    .hero-dot.active { background: var(--white); }

    /* ========================================
       SECTION BASE
    ======================================== */
    .section { padding: 128px 0; }

    .container {
      max-width: 1220px;
      margin: 0 auto;
      padding: 0 56px;
    }

    .s-head { margin-bottom: 72px; }

    .s-num {
      font-family: var(--en);
      font-size: 88px;
      font-weight: 300;
      color: var(--gray-light);
      line-height: 1;
      letter-spacing: -.02em;
      margin-bottom: -24px;
      position: relative;
      z-index: 0;
    }

    .s-label {
      font-family: var(--en);
      font-size: 11px;
      letter-spacing: .44em;
      color: var(--accent);
      font-weight: 400;
      position: relative;
      z-index: 1;
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 16px;
    }

    .s-label::before {
      content: '';
      display: block;
      width: 32px;
      height: 1px;
      background: var(--accent);
    }

    .s-title {
      font-family: var(--serif-jp);
      font-size: clamp(24px, 2.8vw, 36px);
      font-weight: 400;
      line-height: 1.55;
      letter-spacing: .06em;
      position: relative;
      z-index: 1;
    }

    .s-desc {
      font-size: 14px;
      line-height: 2.1;
      color: var(--gray-mid);
      margin-top: 24px;
      max-width: 560px;
    }

    /* Animations */
    .fi {
      opacity: 0;
      transform: translateY(28px);
      transition: opacity .8s ease, transform .8s ease;
    }

    .fi-l {
      opacity: 0;
      transform: translateX(-28px);
      transition: opacity .9s ease, transform .9s ease;
    }

    .fi-r {
      opacity: 0;
      transform: translateX(28px);
      transition: opacity .9s ease, transform .9s ease;
    }

    .fi.on, .fi-l.on, .fi-r.on {
      opacity: 1;
      transform: translate(0);
    }

    /* ========================================
       01 CONCEPT
    ======================================== */
    #concept { background: var(--white); }

    .concept-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 88px;
      align-items: center;
    }

    .concept-img-wrap {
      position: relative;
      aspect-ratio: 4/5;
      overflow: hidden;
    }

    .concept-img-wrap::before {
      content: '';
      position: absolute;
      top: -18px; left: -18px;
      width: 55%; height: 55%;
      border: 1px solid var(--gray-light);
      z-index: -1;
    }

    .concept-img-wrap img { transition: transform .8s ease; }
    .concept-img-wrap:hover img { transform: scale(1.04); }

    .concept-body {
      font-family: var(--serif-jp);
      font-size: 15px;
      line-height: 2.3;
      color: var(--gray-dark);
    }

    .concept-body p + p { margin-top: 24px; }

    /* ========================================
       02 SERVICE
    ======================================== */
    #service { background: var(--bg); }

    .service-top3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 3px;
      margin-top: 64px;
    }

    .service-bot2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 3px;
      margin-top: 3px;
    }

    .service-bot4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 3px;
      margin-top: 3px;
    }

    .svc-item {
      position: relative;
      overflow: hidden;
      aspect-ratio: 4/3;
      cursor: pointer;
    }

    .svc-item img { transition: transform .7s ease; }
    .svc-item:hover img { transform: scale(1.06); }

    .svc-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(0,0,0,.62) 0%, transparent 58%);
      display: flex;
      align-items: flex-end;
      padding: 28px 26px;
    }

    .svc-label { color: var(--white); }

    .svc-en {
      display: block;
      font-family: var(--en);
      font-size: 10px;
      letter-spacing: .32em;
      color: rgba(255,255,255,.6);
      margin-bottom: 6px;
    }

    .svc-jp {
      display: block;
      font-family: var(--serif-jp);
      font-size: 16px;
      font-weight: 400;
      letter-spacing: .1em;
    }

    /* ========================================
       03 WORKS
    ======================================== */
    #works { background: var(--white); }

    .works-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      margin-top: 64px;
    }

    .works-item { cursor: pointer; }

    .works-thumb {
      aspect-ratio: 4/3;
      overflow: hidden;
      margin-bottom: 18px;
    }

    .works-thumb img { transition: transform .7s ease; }
    .works-item:hover .works-thumb img { transform: scale(1.05); }

    .works-tag {
      font-family: var(--en);
      font-size: 10px;
      letter-spacing: .32em;
      color: var(--accent);
      margin-bottom: 8px;
    }

    .works-ttl {
      font-family: var(--serif-jp);
      font-size: 14px;
      font-weight: 400;
      letter-spacing: .06em;
      color: var(--black);
      line-height: 1.7;
    }

    .works-more {
      text-align: center;
      margin-top: 60px;
    }

    .btn-outline {
      display: inline-block;
      padding: 15px 52px;
      border: 1px solid var(--black);
      font-family: var(--en);
      font-size: 11px;
      letter-spacing: .32em;
      color: var(--black);
      transition: background .3s, color .3s;
    }

    .btn-outline:hover {
      background: var(--black);
      color: var(--white);
    }

    /* ========================================
       04 ABOUT
    ======================================== */
    #about { background: var(--bg); }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 88px;
      align-items: center;
    }

    .about-img-wrap {
      position: relative;
      aspect-ratio: 5/4;
      overflow: hidden;
    }

    .about-img-wrap::after {
      content: '';
      position: absolute;
      bottom: -18px; right: -18px;
      width: 55%; height: 55%;
      border: 1px solid var(--gray-light);
      z-index: -1;
    }

    .about-img-wrap img { transition: transform .8s ease; }
    .about-img-wrap:hover img { transform: scale(1.04); }

    .about-body {
      font-size: 14px;
      line-height: 2.2;
      color: var(--gray-mid);
    }

    .about-body p + p { margin-top: 20px; }

    .about-table {
      margin-top: 40px;
      padding-top: 32px;
      border-top: 1px solid var(--gray-light);
    }

    .about-row {
      display: flex;
      gap: 28px;
      padding: 12px 0;
      border-bottom: 1px solid var(--gray-pale);
      font-size: 13px;
    }

    .about-th {
      font-weight: 500;
      color: var(--black);
      min-width: 88px;
      letter-spacing: .06em;
    }

    .about-td { color: var(--gray-mid); }

    /* ========================================
       NEWS
    ======================================== */
    #news { background: var(--white); }

    .news-list { margin-top: 56px; }

    .news-item {
      display: flex;
      align-items: baseline;
      gap: 32px;
      padding: 22px 0;
      border-bottom: 1px solid var(--gray-pale);
      transition: background .2s;
      cursor: pointer;
    }

    .news-item:first-child { border-top: 1px solid var(--gray-pale); }

    .news-item:hover { background: var(--bg); padding-left: 12px; padding-right: 12px; margin: 0 -12px; }

    .news-date {
      font-family: var(--en);
      font-size: 13px;
      font-weight: 300;
      letter-spacing: .1em;
      color: var(--gray-mid);
      white-space: nowrap;
      min-width: 110px;
    }

    .news-cat {
      font-family: var(--en);
      font-size: 9px;
      letter-spacing: .2em;
      color: var(--white);
      background: var(--accent);
      padding: 3px 10px;
      white-space: nowrap;
    }

    .news-ttl {
      font-family: var(--sans-jp);
      font-size: 14px;
      font-weight: 300;
      color: var(--black);
      line-height: 1.7;
    }

    /* ========================================
       05 CONTACT CTA
    ======================================== */
    #contact-cta {
      position: relative;
      padding: 112px 0;
      overflow: hidden;
    }

    .contact-bg {
      position: absolute;
      inset: 0;
      z-index: 0;
    }

    .contact-bg img {
      width: 100%; height: 100%;
      object-fit: cover;
      filter: brightness(.35);
    }

    #contact-cta .container { position: relative; z-index: 1; }

    .cta-inner { text-align: center; color: var(--white); }

    .cta-bignum {
      font-family: var(--en);
      font-size: 88px;
      font-weight: 300;
      color: rgba(255,255,255,.04);
      line-height: 1;
      margin-bottom: -22px;
    }

    .cta-label {
      font-family: var(--en);
      font-size: 11px;
      letter-spacing: .44em;
      color: rgba(255,255,255,.45);
      margin-bottom: 26px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 18px;
    }

    .cta-label::before,
    .cta-label::after {
      content: '';
      display: block;
      width: 40px;
      height: 1px;
      background: rgba(255,255,255,.18);
    }

    .cta-title {
      font-family: var(--serif-jp);
      font-size: clamp(22px, 2.8vw, 34px);
      font-weight: 400;
      line-height: 1.75;
      letter-spacing: .1em;
      margin-bottom: 16px;
    }

    .cta-body {
      font-size: 13px;
      line-height: 2.1;
      color: rgba(255,255,255,.45);
      margin-bottom: 52px;
    }

    .cta-tel { margin-bottom: 44px; }

    .cta-tel a {
      font-family: var(--en);
      font-size: clamp(30px, 4vw, 50px);
      font-weight: 300;
      letter-spacing: .08em;
      color: var(--white);
      border-bottom: 1px solid rgba(255,255,255,.28);
      padding-bottom: 4px;
      transition: border-color .3s;
    }

    .cta-tel a:hover { border-color: var(--white); }

    .cta-tel-note {
      font-size: 11px;
      letter-spacing: .16em;
      color: rgba(255,255,255,.35);
      margin-top: 10px;
    }

    .cta-btns {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 20px;
    }

    .btn-white {
      display: inline-block;
      padding: 16px 52px;
      border: 1px solid rgba(255,255,255,.5);
      font-family: var(--en);
      font-size: 11px;
      letter-spacing: .32em;
      color: var(--white);
      transition: background .3s, border-color .3s;
    }

    .btn-white:hover {
      background: rgba(255,255,255,.12);
      border-color: var(--white);
    }

    /* ========================================
       FOOTER
    ======================================== */
    #footer {
      background: var(--black);
      padding: 80px 0 36px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr 1fr;
      gap: 56px;
      padding-bottom: 52px;
      border-bottom: 1px solid rgba(255,255,255,.09);
      margin-bottom: 32px;
    }

    .f-logo {
      font-family: var(--en);
      font-size: 19px;
      font-weight: 400;
      letter-spacing: .22em;
      color: var(--white);
      margin-bottom: 4px;
    }

    .f-logo-sub {
      font-size: 9px;
      letter-spacing: .2em;
      color: rgba(255,255,255,.35);
      margin-bottom: 24px;
    }

    .f-address {
      font-size: 12px;
      line-height: 2.1;
      color: rgba(255,255,255,.38);
    }

    .f-nav-ttl {
      font-family: var(--en);
      font-size: 10px;
      letter-spacing: .32em;
      color: rgba(255,255,255,.35);
      margin-bottom: 20px;
    }

    .f-nav a {
      display: block;
      font-size: 12px;
      letter-spacing: .1em;
      color: rgba(255,255,255,.48);
      padding: 9px 0;
      border-bottom: 1px solid rgba(255,255,255,.05);
      transition: color .3s;
    }

    .f-nav a:hover { color: var(--white); }

    .f-contact-ttl {
      font-family: var(--en);
      font-size: 10px;
      letter-spacing: .32em;
      color: rgba(255,255,255,.35);
      margin-bottom: 20px;
    }

    .f-tel {
      display: block;
      font-family: var(--en);
      font-size: 26px;
      font-weight: 300;
      letter-spacing: .08em;
      color: var(--white);
      margin-bottom: 8px;
      text-decoration: none;
    }
    .f-tel:hover { color: var(--gray-light); }

    .f-hours {
      font-size: 11px;
      color: rgba(255,255,255,.32);
      margin-bottom: 22px;
    }

    .f-btn {
      display: inline-block;
      padding: 10px 28px;
      border: 1px solid rgba(255,255,255,.28);
      font-family: var(--en);
      font-size: 10px;
      letter-spacing: .22em;
      color: rgba(255,255,255,.55);
      transition: border-color .3s, color .3s;
    }

    .f-btn:hover {
      border-color: var(--white);
      color: var(--white);
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .f-copy {
      font-size: 11px;
      color: rgba(255,255,255,.22);
      letter-spacing: .05em;
    }

    .f-pagetop {
      font-family: var(--en);
      font-size: 9px;
      letter-spacing: .24em;
      color: rgba(255,255,255,.28);
      cursor: pointer;
      display: flex;
      align-items: center;
      gap: 14px;
      transition: color .3s;
    }

    .f-pagetop::before {
      content: '';
      display: block;
      width: 1px;
      height: 44px;
      background: rgba(255,255,255,.18);
    }

    .f-pagetop:hover { color: rgba(255,255,255,.65); }

    /* ========================================
       RESPONSIVE
    ======================================== */
    @media (max-width: 1024px) {
      .container { padding: 0 36px; }
      #header    { padding: 0 36px; }
      .concept-grid,
      .about-grid { gap: 52px; }
    }

    @media (max-width: 768px) {
      #header    { padding: 0 20px; height: 62px; }
      .h-nav     { display: none; }
      .h-burger  { display: flex; }

      .section   { padding: 80px 0; }
      .container { padding: 0 20px; }

      .s-num  { font-size: 60px; }
      .s-head { margin-bottom: 48px; }

      .concept-grid,
      .about-grid {
        grid-template-columns: 1fr;
        gap: 44px;
      }

      .about-img-wrap { order: -1; }

      .service-top3 { grid-template-columns: 1fr 1fr; }
      .service-bot4 { grid-template-columns: 1fr 1fr; }

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

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

      .hero-content { left: 20px; right: 20px; bottom: 18%; }
      .hero-scroll  { display: none; }
      .cta-btns     { flex-direction: column; gap: 12px; }
    }

    @media (max-width: 480px) {
      .service-top3,
      .service-bot2,
      .service-bot4,
      .works-grid  { grid-template-columns: 1fr; }
    }
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      --black: #111111;
      --dark: #1a1a1a;
      --mid: #444;
      --light-gray: #888;
      --border: #2e2e2e;
      --border-light: #e5e5e5;
      --white: #ffffff;
      --off-white: #f5f5f5;
      --accent: #c8a96e;
      --font-en: 'Montserrat', sans-serif;
      --font-ja: 'Noto Sans JP', sans-serif;
    }

    html { scroll-behavior: smooth; }

    body {
      font-family: var(--font-ja);
      background: var(--white);
      color: var(--dark);
      font-size: 15px;
      line-height: 1.8;
      overflow-x: hidden;
    }

    /* ============================
       HEADER（1段・holidays準拠）
    ============================ */
    #site-header {
      position: fixed;
      top: 0; left: 0;
      width: 100%;
      z-index: 500;
      transition: background 0.4s ease, box-shadow 0.4s ease;
    }
    #site-header.scrolled {
      background: rgba(15,15,15,0.97);
      box-shadow: 0 1px 0 rgba(255,255,255,0.06);
    }

    /* 1本の横バー */
    .header-bar {
      display: grid;
      grid-template-columns: auto 1fr auto;
      align-items: center;
      height: 70px;
      padding: 0 36px 0 32px;
      gap: 0;
    }

    /* ロゴ */
    .header-logo-text {
      font-family: var(--font-en);
      font-size: 16px;
      font-weight: 700;
      letter-spacing: 0.18em;
      color: var(--white);
      text-decoration: none;
      white-space: nowrap;
      flex-shrink: 0;
    }

    /* センターナビ */
    .header-nav {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0;
      list-style: none;
    }
    .header-nav li a {
      display: block;
      padding: 0 18px;
      font-family: var(--font-en);
      font-size: 11px;
      font-weight: 600;
      letter-spacing: 0.14em;
      color: rgba(255,255,255,0.7);
      text-decoration: none;
      line-height: 70px;
      white-space: nowrap;
      transition: color 0.25s;
      position: relative;
    }
    .header-nav li a::after {
      content: '';
      position: absolute;
      bottom: 14px;
      left: 18px;
      right: 18px;
      height: 1px;
      background: var(--accent);
      transform: scaleX(0);
      transition: transform 0.25s;
    }
    .header-nav li a:hover { color: var(--white); }
    .header-nav li a:hover::after { transform: scaleX(1); }
    .header-nav li a.active { color: var(--white); }
    .header-nav li a.active::after { transform: scaleX(1); }

    /* 右側アクション */
    .header-actions {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .header-tel {
      font-family: var(--font-en);
      font-size: 13px;
      font-weight: 600;
      color: rgba(255,255,255,0.8);
      text-decoration: none;
      letter-spacing: 0.06em;
      margin-right: 6px;
      white-space: nowrap;
    }
    .header-tel:hover { color: var(--white); }

    .btn-reserve {
      font-family: var(--font-en);
      font-size: 10px;
      font-weight: 700;
      letter-spacing: 0.16em;
      text-decoration: none;
      padding: 9px 20px;
      transition: background 0.25s, color 0.25s;
      white-space: nowrap;
    }
    .btn-reserve.outline {
      background: transparent;
      color: var(--white);
      border: 1px solid rgba(255,255,255,0.45);
    }
    .btn-reserve.outline:hover { background: rgba(255,255,255,0.1); }
    .btn-reserve.white {
      background: var(--white);
      color: var(--black);
    }
    .btn-reserve.white:hover { background: var(--accent); color: var(--white); }

    /* hamburger */
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      padding: 4px;
    }
    .hamburger span {
      display: block;
      width: 24px;
      height: 1.5px;
      background: var(--white);
    }

    /* ============================
       HERO
    ============================ */
    #hero {
      position: relative;
      width: 100%;
      height: 100vh;
      min-height: 640px;
      overflow: hidden;
      background: var(--black);
    }

    .hero-bg {
      position: absolute;
      inset: 0;
      background-size: cover;
      background-position: center;
      opacity: 0;
      transition: opacity 1.4s ease;
    }
    .hero-bg.active { opacity: 1; }
    .hero-bg::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(
        135deg,
        rgba(0,0,0,0.6) 0%,
        rgba(0,0,0,0.2) 60%,
        rgba(0,0,0,0.4) 100%
      );
    }

    .hero-inner {
      position: absolute;
      inset: 0;
      z-index: 2;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 0 64px 80px;
    }

    .hero-copy {
      font-family: var(--font-en);
      font-size: clamp(48px, 7.5vw, 110px);
      font-weight: 700;
      color: var(--white);
      line-height: 0.95;
      letter-spacing: -0.01em;
      margin-bottom: 28px;
      opacity: 0;
      transform: translateY(40px);
      animation: fadeUp 1s 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    }
    .hero-copy .line2 {
      display: block;
      font-weight: 300;
      font-style: italic;
      letter-spacing: 0.02em;
    }

    .hero-sub {
      font-family: var(--font-ja);
      font-size: 14px;
      font-weight: 300;
      color: rgba(255,255,255,0.7);
      letter-spacing: 0.2em;
      margin-bottom: 40px;
      opacity: 0;
      animation: fadeUp 1s 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    }

    .hero-btns {
      display: flex;
      gap: 12px;
      opacity: 0;
      animation: fadeUp 1s 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    }
    .hero-btn {
      font-family: var(--font-en);
      font-size: 11px;
      font-weight: 600;
      letter-spacing: 0.18em;
      text-decoration: none;
      padding: 16px 36px;
      transition: all 0.3s;
    }
    .hero-btn-primary {
      background: var(--white);
      color: var(--black);
    }
    .hero-btn-primary:hover {
      background: var(--accent);
      color: var(--white);
    }
    .hero-btn-secondary {
      background: transparent;
      color: var(--white);
      border: 1px solid rgba(255,255,255,0.5);
    }
    .hero-btn-secondary:hover {
      background: rgba(0,0,0,0.1);
    }

    .hero-scroll {
      position: absolute;
      bottom: 36px;
      right: 48px;
      z-index: 2;
      display: flex;
      align-items: center;
      gap: 14px;
      opacity: 0;
      animation: fadeUp 1s 1.3s forwards;
    }
    .hero-scroll span {
      font-family: var(--font-en);
      font-size: 9px;
      font-weight: 600;
      letter-spacing: 0.3em;
      color: rgba(255,255,255,0.5);
    }
    .scroll-bar {
      width: 50px;
      height: 1px;
      background: rgba(255,255,255,0.2);
      position: relative;
      overflow: hidden;
    }
    .scroll-bar::after {
      content: '';
      position: absolute;
      left: -100%;
      top: 0;
      width: 100%;
      height: 100%;
      background: rgba(255,255,255,0.7);
      animation: scrollBar 2s 1.5s infinite;
    }
    @keyframes scrollBar {
      0% { left: -100%; }
      100% { left: 100%; }
    }

    /* slide counter */
    .hero-counter {
      position: absolute;
      bottom: 40px;
      left: 64px;
      z-index: 2;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .hero-dots {
      display: flex;
      gap: 6px;
    }
    .hero-dot {
      width: 24px;
      height: 2px;
      background: rgba(255,255,255,0.25);
      cursor: pointer;
      transition: background 0.3s, width 0.3s;
    }
    .hero-dot.active {
      background: var(--white);
      width: 40px;
    }

    @keyframes fadeUp {
      to { opacity: 1; transform: translateY(0); }
    }

    /* ============================
       SECTION COMMON
    ============================ */
    .section { padding: 100px 0; }
    .section-dark {
      background: var(--black);
      color: var(--white);
    }
    .section-gray { background: var(--off-white); }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 48px;
    }
    .container-wide {
      max-width: 1400px;
      margin: 0 auto;
      padding: 0 48px;
    }

    .section-label {
      font-family: var(--font-en);
      font-size: 10px;
      font-weight: 700;
      letter-spacing: 0.35em;
      color: var(--accent);
      display: block;
      margin-bottom: 16px;
    }
    .section-title {
      font-family: var(--font-en);
      font-size: clamp(28px, 3.5vw, 44px);
      font-weight: 700;
      letter-spacing: -0.01em;
      line-height: 1.1;
      margin-bottom: 8px;
    }
    .section-title-ja {
      font-family: var(--font-ja);
      font-size: 14px;
      font-weight: 300;
      color: var(--light-gray);
      letter-spacing: 0.15em;
    }
    .section-dark .section-title-ja { color: rgba(255,255,255,0.45); }
    .section-title-desc {
      font-size: 14px;
      font-weight: 300;
      color: var(--light-gray);
      margin-top: 20px;
      line-height: 1.9;
    }
    .section-dark .section-title-desc { color: rgba(255,255,255,0.55); }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      margin-bottom: 56px;
    }

    .link-more {
      font-family: var(--font-en);
      font-size: 11px;
      font-weight: 600;
      letter-spacing: 0.2em;
      color: var(--dark);
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding-bottom: 2px;
      border-bottom: 1px solid var(--dark);
      transition: gap 0.3s, color 0.3s, border-color 0.3s;
      white-space: nowrap;
    }
    .link-more::after { content: '→'; }
    .link-more:hover { gap: 16px; color: var(--accent); border-color: var(--accent); }
    .section-dark .link-more {
      color: var(--white);
      border-color: rgba(255,255,255,0.4);
    }
    .section-dark .link-more:hover {
      color: var(--accent);
      border-color: var(--accent);
    }

    /* ============================
       INFORMATION (News ticker)
    ============================ */
    #information {
      background: var(--black);
      border-bottom: 1px solid var(--border);
      padding: 0;
    }
    .info-inner {
      display: flex;
      align-items: stretch;
    }
    .info-label {
      flex-shrink: 0;
      background: var(--accent);
      padding: 18px 28px;
      font-family: var(--font-en);
      font-size: 10px;
      font-weight: 700;
      letter-spacing: 0.25em;
      color: var(--black);
      display: flex;
      align-items: center;
    }
    .info-text {
      display: flex;
      align-items: center;
      gap: 24px;
      padding: 18px 32px;
      overflow: hidden;
    }
    .info-date {
      font-family: var(--font-en);
      font-size: 12px;
      font-weight: 500;
      color: var(--accent);
      flex-shrink: 0;
    }
    .info-news-text {
      font-size: 13px;
      font-weight: 300;
      color: rgba(255,255,255,0.75);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .info-news-text a {
      color: inherit;
      text-decoration: none;
      transition: color 0.3s;
    }
    .info-news-text a:hover { color: var(--white); }

    /* ============================
       WORKS (施工事例)
    ============================ */
    #works { background: var(--black); }

    .works-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2px;
      margin-bottom: 2px;
    }
    .works-grid-bottom {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2px;
    }
    .work-card {
      position: relative;
      overflow: hidden;
      aspect-ratio: 4/3;
      cursor: pointer;
      background: #222;
    }
    .work-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94), filter 0.5s;
      filter: brightness(0.85);
    }
    .work-card:hover img {
      transform: scale(1.06);
      filter: brightness(0.65);
    }
    .work-card-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 55%);
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 24px;
      opacity: 0;
      transition: opacity 0.4s;
    }
    .work-card:hover .work-card-overlay { opacity: 1; }
    .work-card-title {
      font-family: var(--font-ja);
      font-size: 13px;
      font-weight: 400;
      color: var(--white);
      line-height: 1.6;
      margin-bottom: 4px;
    }
    .work-card-loc {
      font-family: var(--font-en);
      font-size: 10px;
      font-weight: 500;
      letter-spacing: 0.15em;
      color: rgba(255,255,255,0.55);
    }
    /* large card */
    .work-card-large {
      grid-column: span 2;
      aspect-ratio: unset;
      height: 420px;
    }
    .work-card-large .work-card-overlay { opacity: 1; }
    .work-card-large .work-card-title { font-size: 18px; }

    /* ============================
       SERVICE (ラインナップ)
    ============================ */
    #service { background: var(--off-white); }

    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: var(--white);
      overflow: hidden;
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 60px rgba(0,0,0,0.1);
    }
    .service-card-img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      display: block;
      transition: transform 0.6s ease;
    }
    .service-card:hover .service-card-img { transform: scale(1.04); }
    .service-card-img-wrap { overflow: hidden; }
    .service-card-body { padding: 24px; }
    .service-card-tag {
      font-family: var(--font-en);
      font-size: 9px;
      font-weight: 700;
      letter-spacing: 0.25em;
      color: var(--accent);
      display: block;
      margin-bottom: 8px;
    }
    .service-card-name-en {
      font-family: var(--font-en);
      font-size: 20px;
      font-weight: 700;
      letter-spacing: 0.02em;
      color: var(--black);
      display: block;
      margin-bottom: 4px;
    }
    .service-card-name-ja {
      font-family: var(--font-ja);
      font-size: 12px;
      font-weight: 300;
      color: var(--light-gray);
      display: block;
      margin-bottom: 12px;
    }
    .service-card-desc {
      font-size: 13px;
      font-weight: 300;
      color: var(--mid);
      line-height: 1.85;
    }

    /* ============================
       FEATURE (構造・性能)
    ============================ */
    #feature { background: var(--black); }

    .feature-list { display: flex; flex-direction: column; gap: 0; }
    .feature-item {
      display: grid;
      grid-template-columns: 1fr 1fr;
      border-top: 1px solid var(--border);
      transition: background 0.3s;
    }
    .feature-item:last-child { border-bottom: 1px solid var(--border); }
    .feature-item:hover { background: rgba(255,255,255,0.02); }
    .feature-item-img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      display: block;
      filter: brightness(0.8);
    }
    .feature-item-body {
      padding: 56px 64px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .feature-num {
      font-family: var(--font-en);
      font-size: 10px;
      font-weight: 700;
      letter-spacing: 0.3em;
      color: var(--accent);
      margin-bottom: 16px;
    }
    .feature-title {
      font-family: var(--font-en);
      font-size: clamp(20px, 2.5vw, 30px);
      font-weight: 700;
      color: var(--white);
      letter-spacing: 0.02em;
      margin-bottom: 8px;
      line-height: 1.2;
    }
    .feature-title-ja {
      font-family: var(--font-ja);
      font-size: 13px;
      font-weight: 300;
      color: rgba(255,255,255,0.45);
      margin-bottom: 24px;
    }
    .feature-desc {
      font-size: 13px;
      font-weight: 300;
      color: rgba(255,255,255,0.6);
      line-height: 2;
    }
    .feature-item:nth-child(even) .feature-item-img { order: 2; }
    .feature-item:nth-child(even) .feature-item-body { order: 1; }

    /* ============================
       POINT
    ============================ */
    #point {
      background: var(--white);
      padding: 100px 0;
    }
    .point-inner {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 48px;
    }
    .point-list { display: flex; flex-direction: column; gap: 0; }
    .point-item {
      display: grid;
      grid-template-columns: 1fr 1fr;
      align-items: center;
      gap: 0;
      border-top: 1px solid var(--border-light);
    }
    .point-item:last-child { border-bottom: 1px solid var(--border-light); }
    .point-item-img {
      width: 100%;
      height: 360px;
      object-fit: cover;
      display: block;
    }
    .point-item-body {
      padding: 64px 72px;
    }
    .point-num {
      font-family: var(--font-en);
      font-size: 10px;
      font-weight: 700;
      letter-spacing: 0.3em;
      color: var(--accent);
      margin-bottom: 16px;
      display: block;
    }
    .point-title {
      font-size: clamp(16px, 1.8vw, 22px);
      font-weight: 500;
      color: var(--dark);
      line-height: 1.5;
      margin-bottom: 20px;
      letter-spacing: 0.02em;
    }
    .point-desc {
      font-size: 13px;
      font-weight: 300;
      color: var(--mid);
      line-height: 2;
    }
    .point-item:nth-child(even) .point-item-img { order: 2; }
    .point-item:nth-child(even) .point-item-body { order: 1; }

    /* ============================
       COLUMN
    ============================ */
    #column { background: var(--off-white); }

    .column-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 2px;
    }
    .column-card {
      background: var(--white);
      text-decoration: none;
      color: var(--dark);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: opacity 0.3s;
    }
    .column-card:hover { opacity: 0.8; }
    .column-card-img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      background: #ddd;
    }
    .column-card-large .column-card-img { height: 320px; }
    .column-card-body { padding: 24px; flex: 1; }
    .column-card-date {
      font-family: var(--font-en);
      font-size: 11px;
      font-weight: 500;
      color: var(--light-gray);
      letter-spacing: 0.1em;
      margin-bottom: 10px;
      display: block;
    }
    .column-card-title {
      font-size: 14px;
      font-weight: 500;
      line-height: 1.65;
      color: var(--dark);
    }
    .column-card-large .column-card-title { font-size: 16px; }

    /* ============================
       CONTACT CTA
    ============================ */
    #contact-cta {
      background: var(--black);
      padding: 100px 0;
      text-align: center;
    }
    #contact-cta .section-label { justify-content: center; display: flex; }
    #contact-cta .cta-heading {
      font-family: var(--font-en);
      font-size: clamp(24px, 3.5vw, 44px);
      font-weight: 700;
      color: var(--white);
      letter-spacing: -0.01em;
      margin-bottom: 12px;
    }
    #contact-cta .cta-sub {
      font-size: 13px;
      font-weight: 300;
      color: rgba(255,255,255,0.5);
      letter-spacing: 0.18em;
      margin-bottom: 48px;
      display: block;
    }
    .cta-options {
      display: flex;
      justify-content: center;
      gap: 0;
      flex-wrap: wrap;
      border: 1px solid rgba(255,255,255,0.15);
      max-width: 900px;
      margin: 0 auto;
    }
    .cta-option {
      flex: 1;
      min-width: 200px;
      padding: 48px 32px;
      border-right: 1px solid rgba(255,255,255,0.1);
      text-align: center;
    }
    .cta-option:last-child { border-right: none; }
    .cta-option-label {
      font-family: var(--font-ja);
      font-size: 12px;
      font-weight: 300;
      color: rgba(255,255,255,0.5);
      letter-spacing: 0.15em;
      margin-bottom: 20px;
      display: block;
    }
    .cta-btn {
      display: inline-block;
      font-family: var(--font-en);
      font-size: 11px;
      font-weight: 700;
      letter-spacing: 0.2em;
      text-decoration: none;
      padding: 14px 32px;
      transition: all 0.3s;
    }
    .cta-btn-primary {
      background: var(--white);
      color: var(--black);
    }
    .cta-btn-primary:hover { background: var(--accent); color: var(--white); }
    .cta-btn-outline {
      background: transparent;
      color: var(--white);
      border: 1px solid rgba(255,255,255,0.35);
    }
    .cta-btn-outline:hover { background: rgba(255,255,255,0.08); }
    .cta-tel-num {
      display: block;
      font-family: var(--font-en);
      font-size: 24px;
      font-weight: 600;
      color: var(--white);
      text-decoration: none;
      letter-spacing: 0.05em;
      margin-bottom: 6px;
    }
    .cta-tel-hours {
      font-size: 11px;
      font-weight: 300;
      color: rgba(255,255,255,0.4);
      letter-spacing: 0.1em;
    }

    /* ============================
       FOOTER
    ============================ */
    #footer {
      background: #0a0a0a;
      padding: 80px 0 0;
    }
    .footer-top {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 48px;
      display: grid;
      grid-template-columns: 280px 1fr 1fr 1fr;
      gap: 60px;
      padding-bottom: 60px;
      border-bottom: 1px solid rgba(255,255,255,0.07);
    }
    .footer-brand {}
    .footer-logo-text {
      font-family: var(--font-en);
      font-size: 18px;
      font-weight: 700;
      letter-spacing: 0.15em;
      color: var(--white);
      text-decoration: none;
      display: block;
      margin-bottom: 20px;
    }
    .footer-address {
      font-size: 12px;
      font-weight: 300;
      color: rgba(0,0,0,0.45);
      line-height: 2.1;
      margin-bottom: 24px;
    }
    .footer-tel {
      font-family: var(--font-en);
      font-size: 18px;
      font-weight: 600;
      color: rgba(255,255,255,0.7);
      text-decoration: none;
      display: block;
      margin-bottom: 4px;
      letter-spacing: 0.05em;
    }
    .footer-hours {
      font-size: 11px;
      font-weight: 300;
      color: rgba(255,255,255,0.3);
      letter-spacing: 0.1em;
    }

    .footer-col-title {
      font-family: var(--font-en);
      font-size: 10px;
      font-weight: 700;
      letter-spacing: 0.3em;
      color: rgba(0,0,0,0.45);
      margin-bottom: 20px;
      padding-bottom: 12px;
      border-bottom: 1px solid rgba(255,255,255,0.07);
    }
    .footer-nav { list-style: none; }
    .footer-nav li { margin-bottom: 10px; }
    .footer-nav a {
      font-size: 13px;
      font-weight: 300;
      color: rgba(255,255,255,0.5);
      text-decoration: none;
      letter-spacing: 0.04em;
      transition: color 0.3s;
    }
    .footer-nav a:hover { color: var(--white); }

    .footer-bottom {
      max-width: 1200px;
      margin: 0 auto;
      padding: 24px 48px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .footer-copy {
      font-family: var(--font-en);
      font-size: 10px;
      font-weight: 400;
      letter-spacing: 0.12em;
      color: rgba(255,255,255,0.2);
    }
    .footer-sns {
      display: flex;
      gap: 20px;
    }
    .footer-sns a {
      font-family: var(--font-en);
      font-size: 10px;
      font-weight: 600;
      letter-spacing: 0.2em;
      color: rgba(255,255,255,0.3);
      text-decoration: none;
      transition: color 0.3s;
    }
    .footer-sns a:hover { color: var(--white); }

    /* ============================
       MOBILE NAV
    ============================ */
    .mobile-nav-overlay {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(10,10,10,0.99);
      z-index: 900;
      flex-direction: column;
      padding: 80px 40px 40px;
      overflow-y: auto;
    }
    .mobile-nav-overlay.open { display: flex; }
    .mobile-nav-close {
      position: absolute;
      top: 20px;
      right: 24px;
      background: none;
      border: none;
      color: rgba(255,255,255,0.5);
      font-size: 32px;
      cursor: pointer;
      line-height: 1;
      padding: 4px;
    }
    .mobile-nav-links {
      display: flex;
      flex-direction: column;
      gap: 0;
      border-top: 1px solid rgba(255,255,255,0.08);
    }
    .mobile-nav-links a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 20px 0;
      border-bottom: 1px solid rgba(255,255,255,0.08);
      text-decoration: none;
    }
    .mobile-nav-links a .en {
      font-family: var(--font-en);
      font-size: 22px;
      font-weight: 700;
      color: var(--white);
      letter-spacing: 0.05em;
    }
    .mobile-nav-links a .ja {
      font-size: 11px;
      font-weight: 300;
      color: rgba(0,0,0,0.45);
      letter-spacing: 0.15em;
    }
    .mobile-nav-btns {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 40px;
    }
    .mobile-nav-btns a {
      display: block;
      font-family: var(--font-en);
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 0.2em;
      text-align: center;
      padding: 16px;
      text-decoration: none;
      transition: all 0.3s;
    }
    .mobile-nav-tel {
      color: rgba(255,255,255,0.85);
      border: 1px solid rgba(255,255,255,0.25);
    }
    .mobile-nav-tel:hover { background: rgba(255,255,255,0.08); color: #fff; }
    .mobile-nav-cta {
      background: #fff;
      color: #1a1a1a !important;
    }
    .mobile-nav-cta:hover { background: #e8e5e0; }

    /* ============================
       FADE IN ANIMATION
    ============================ */
    .js-fade {
      opacity: 0;
      transform: translateY(20px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .js-fade.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ============================
       RESPONSIVE
    ============================ */
    @media (max-width: 1024px) {
      .container, .container-wide { padding: 0 32px; }
      .hero-inner { padding: 0 40px 64px; }
      .works-grid { grid-template-columns: repeat(2, 1fr); }
      .works-grid-bottom { grid-template-columns: repeat(2, 1fr); }
      .work-card-large { grid-column: span 2; }
      .service-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
      .footer-top { grid-template-columns: 1fr 1fr; gap: 40px; }
      .feature-item { grid-template-columns: 1fr; }
      .feature-item:nth-child(even) .feature-item-img { order: 0; }
      .feature-item:nth-child(even) .feature-item-body { order: 0; }
      .feature-item-img { height: 260px; }
      .feature-item-body { padding: 40px 40px; }
    }

    @media (max-width: 768px) {
      .header-nav { display: none; }
      .hamburger { display: flex; }
      .header-tel { display: none; }

      #hero { height: 100svh; }
      .hero-inner { padding: 0 24px 64px; }
      .hero-copy { font-size: clamp(40px, 11vw, 60px); }
      .hero-counter { left: 24px; }
      .hero-scroll { right: 24px; }

      .section { padding: 70px 0; }
      .container, .container-wide { padding: 0 24px; }

      .section-head { flex-direction: column; align-items: flex-start; gap: 24px; }

      .works-grid { grid-template-columns: 1fr; }
      .works-grid-bottom { grid-template-columns: 1fr; }
      .work-card-large { grid-column: span 1; height: 280px; }
      .work-card { aspect-ratio: 4/3; }

      .service-grid { grid-template-columns: 1fr; }
      .service-card-img { height: 200px; }

      .point-item { grid-template-columns: 1fr; }
      .point-item:nth-child(even) .point-item-img { order: 0; }
      .point-item:nth-child(even) .point-item-body { order: 0; }
      .point-item-img { height: 260px; }
      .point-item-body { padding: 40px 24px; }

      .column-grid { grid-template-columns: 1fr; }
      .column-card-large .column-card-img { height: 220px; }

      .cta-options { flex-direction: column; border: none; gap: 24px; }
      .cta-option { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); padding: 32px 24px; }
      .cta-option:last-child { border-bottom: none; }

      .footer-top { grid-template-columns: 1fr; gap: 32px; }
      .footer-bottom { flex-direction: column; gap: 16px; padding: 20px 24px; }

      #information .info-inner { flex-direction: column; }
      .info-text { padding: 14px 24px; }
    }

    @media (max-width: 480px) {
      .hero-copy { font-size: 36px; }
      .hero-btns { flex-direction: column; }
      .hero-btn { text-align: center; }
    }

    /* ============================
       LOADING SCREEN
    ============================ */
    #page-loader {
      position: fixed;
      inset: 0;
      z-index: 9999;
      background: #f0f0f0;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 32px;
      transition: opacity 0.7s ease, visibility 0.7s ease;
    }
    #page-loader.hide {
      opacity: 0;
      visibility: hidden;
    }
    .loader-logo {
      width: 320px !important;
      max-width: 70vw !important;
      height: auto !important;
      display: block !important;
      object-fit: contain !important;
      opacity: 0;
      animation: loaderFadeIn 0.8s 0.2s ease forwards;
    }
    .loader-bar-wrap {
      width: 200px;
      height: 1px;
      background: rgba(0,0,0,0.1);
      overflow: hidden;
      opacity: 0;
      animation: loaderFadeIn 0.8s 0.4s ease forwards;
    }
    .loader-bar {
      height: 100%;
      width: 0%;
      background: #1a3a6b;
      animation: loaderProgress 1.8s 0.5s cubic-bezier(0.4,0,0.2,1) forwards;
    }
    .loader-text {
      font-family: 'Montserrat', sans-serif;
      font-size: 9px;
      font-weight: 600;
      letter-spacing: 0.35em;
      color: rgba(0,0,0,0.45);
      opacity: 0;
      animation: loaderFadeIn 0.8s 0.6s ease forwards;
    }
    @keyframes loaderFadeIn {
      to { opacity: 1; }
    }
    @keyframes loaderProgress {
      to { width: 100%; }
    }
    /* ========================================
       MIXED OVERRIDES
    ======================================== */

    /* モバイルナビ: #mobileNav の specificity 競合解消 (Design1 CSS override) */
    #mobileNav.open {
      display: flex !important;
      opacity: 1 !important;
      pointer-events: all !important;
      background: #111 !important;
    }

    /* モバイル: btn-reserve を非表示にしてハンバーガーを確保 */
    @media (max-width: 768px) {
      .btn-reserve { display: none !important; }
      .hamburger { display: flex !important; }
    }