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

  :root {
    --navy: #0a1628;
    --blue: #1a4a8a;
    --accent: #2563b0;
    --light-blue: #e8f0fa;
    --text: #1a1a2e;
    --gray: #6b7280;
    --white: #ffffff;
  }

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

  body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
  }

  /* ===== HEADER ===== */
  header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.08);
    padding: 0 20px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    overflow: hidden;
  }

  .logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    max-width: min(340px, 44vw);
    flex-shrink: 0;
  }

  .site-logo {
    display: flex;
    width: auto;
    height: 48px;
    max-width: 100%;
    object-fit: contain;
  }

  .site-logo--footer {
    height: 44px;
  }

  nav {
    display: flex;
    align-items: center;
    gap: 20px;
    white-space: nowrap;
    min-width: 0;
    justify-content: flex-end;
  }

  nav a {
    text-decoration: none;
    color: var(--text);
    font-size: 13px;
    font-weight: 500;
    transition: color 0.2s;
    position: relative;
    white-space: nowrap;
  }

  nav a::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0; right: 0;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transition: transform 0.2s;
  }

  nav a:hover { color: var(--accent); }
  nav a:hover::after { transform: scaleX(1); }

  nav a.btn-contact {
    background: var(--accent);
    color: white;
    padding: 10px 22px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
  }

  nav a.btn-contact::after { display: none; }
  nav a.btn-contact:hover { background: #1d4ed8; color: white; }

  /* ===== HERO ===== */
  #home {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: flex-end;
    padding-bottom: 80px;
    padding-left: 60px;
    overflow: hidden;
  }

  .hero-bg {
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(160deg, rgba(255,255,255,0.08) 0%, rgba(11,29,52,0.18) 100%),
      url('../images/hero-office-buildings-display.webp');
    background-size: cover;
    background-position: center right;
    background-repeat: no-repeat;
    transform: scale(1.02);
  }

  .hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
      radial-gradient(circle at 76% 24%, rgba(255,255,255,0.32) 0%, rgba(255,255,255,0) 28%),
      linear-gradient(to bottom, rgba(12,24,44,0.1) 0%, rgba(12,24,44,0.42) 100%);
  }

  .hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
      90deg,
      rgba(7,17,31,0.82) 0%,
      rgba(7,17,31,0.68) 30%,
      rgba(7,17,31,0.28) 62%,
      rgba(7,17,31,0.08) 100%
    );
  }

  .hero-content {
    position: relative;
    z-index: 2;
  }

  .hero-content h1 {
    font-family: 'Noto Serif JP', serif;
    font-size: clamp(42px, 5vw, 70px);
    font-weight: 700;
    color: white;
    line-height: 1.3;
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
    margin-bottom: 16px;
  }

  .hero-content p {
    color: rgba(255,255,255,0.85);
    font-size: 16px;
    font-weight: 300;
    letter-spacing: 0.05em;
  }

  .hero-content p::before {
    content: '— ';
  }

  /* ===== SECTIONS COMMON ===== */
  section { padding: 100px 0; }

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 60px;
  }

  .section-label {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 8px;
  }

  /* ===== COMPANY SECTION ===== */
  #company {
    background: white;
    padding: 0;
  }

  .company-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 600px;
  }

  .company-images {
    position: relative;
    background: var(--navy);
    overflow: hidden;
  }

  .company-img-main {
    width: 100%; height: 100%;
    object-fit: cover;
    opacity: 0.85;
  }

  .company-img-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, rgba(26,74,138,0.6) 0%, rgba(10,22,40,0.4) 100%);
  }

  .company-images-placeholder {
    width: 100%; height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    gap: 12px;
    padding: 12px;
    background: #eef3f9;
  }

  .img-block {
    flex: 1;
    overflow: hidden;
    border-radius: 18px;
  }

  .company-photo {
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 240px;
  }

  .company-photo::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(8,20,36,0.08) 0%, rgba(8,20,36,0.34) 100%);
  }

  .company-photo-top {
    background-image: url('../images/photo-consulting-laptop-display.webp');
    background-position: center top;
  }

  .company-photo-bottom {
    background-image: url('../images/photo-business-team-display.webp');
    background-position: center;
  }

  .company-text {
    display: flex;
    align-items: center;
    padding: 80px 60px;
    background: white;
  }

  .company-text-inner h2 {
    font-family: 'Noto Serif JP', serif;
    font-size: 32px;
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: 28px;
    color: var(--text);
  }

  .company-text-inner p {
    font-size: 15px;
    color: #4b5563;
    line-height: 2;
  }

  /* ===== COMPANY OVERVIEW ===== */
  #overview {
    background: white;
    padding: 0;
  }

  .overview-hero {
    height: 350px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
  }

  .overview-hero::before {
    content: '';
    position: absolute; inset: 0;
    background: 
      linear-gradient(to bottom, rgba(100,140,200,0.3) 0%, rgba(50,80,150,0.5) 100%);
  }

  .overview-window-bg {
    width: 100%; height: 100%;
    background: linear-gradient(
      135deg,
      #b0c8e8 0%,
      #7aadd4 30%,
      #5590c0 60%,
      #3070a8 100%
    );
    position: relative;
  }

  .overview-window-bg::before {
    content: '';
    position: absolute; inset: 0;
    background: repeating-linear-gradient(
      90deg,
      transparent 0px,
      transparent 60px,
      rgba(255,255,255,0.15) 60px,
      rgba(255,255,255,0.15) 62px
    );
  }

  .overview-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 60px 60px 80px;
  }

  .overview-content h2 {
    font-family: 'Noto Serif JP', serif;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 48px;
    color: var(--text);
  }

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

  .overview-table tr {
    border-bottom: 1px solid #e5e7eb;
  }

  .overview-table td {
    padding: 20px 0;
    font-size: 15px;
  }

  .overview-table td:first-child {
    width: 160px;
    color: var(--gray);
    font-weight: 500;
  }

  .overview-table td:last-child {
    color: var(--text);
  }

  /* ===== SERVICE ===== */
  #service {
    background: #f8fafc;
    padding: 0;
  }

  .service-hero {
    height: 400px;
    background: linear-gradient(135deg, #2c3e50 0%, #4a6074 50%, #6a8096 100%);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .service-hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.3) 100%);
  }

  .service-inner {
    padding: 60px 0;
  }

  .service-header {
    padding: 0 60px;
    margin-bottom: 60px;
  }

  .service-header h2 {
    font-family: 'Cormorant Garamond', serif;
    font-size: 52px;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 4px;
  }

  .service-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
  }

  .service-divider span {
    font-size: 13px;
    color: var(--gray);
  }

  .service-divider::after {
    content: '';
    flex: 1;
    max-width: 80px;
    height: 1px;
    background: var(--gray);
  }

  .service-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    margin-bottom: 48px;
    padding: 0 60px;
  }

  .service-item:nth-child(even) .service-item-img {
    order: 2;
  }

  .service-item:nth-child(even) .service-item-text {
    order: 1;
    padding-right: 60px;
    padding-left: 0;
  }

  .service-item-img {
    border-radius: 8px;
    overflow: hidden;
    min-height: 300px;
    background: #dfe9f4;
  }

  .service-photo {
    height: 100%;
    min-height: 300px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
  }

  .service-photo::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.04) 0%, rgba(8,20,36,0.32) 100%);
  }

  .service-photo-01 {
    background-image: url('../images/photo-seminar-manager-display.webp');
    background-position: center;
  }

  .service-photo-02 {
    background-image: url('../images/photo-consulting-laptop-display.webp');
    background-position: center;
  }

  .service-photo-03 {
    background-image: url('../images/photo-handshake-meeting-display.webp');
    background-position: center;
  }

  .service-item-text {
    padding-left: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .service-item-text h3 {
    font-family: 'Noto Serif JP', serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 24px;
    display: flex;
    align-items: baseline;
    gap: 12px;
  }

  .service-num {
    font-family: 'Cormorant Garamond', serif;
    font-size: 36px;
    font-weight: 400;
    color: var(--accent);
    opacity: 0.5;
  }

  .service-item-text ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .service-item-text ul li {
    font-size: 13.5px;
    color: #374151;
    padding-left: 16px;
    position: relative;
    line-height: 1.6;
  }

  .service-item-text ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent);
  }

  /* ===== CONTACT ===== */
  #contact {
    padding: 0;
    position: relative;
  }

  .contact-bg {
    min-height: 420px;
    background-image:
      linear-gradient(135deg, rgba(8,18,33,0.58) 0%, rgba(8,18,33,0.76) 100%),
      url('../images/photo-executive-phone-display.webp');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 80px;
    overflow: hidden;
  }

  .contact-bg::before {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(to right, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.1) 60%, transparent 100%);
  }

  .contact-content {
    position: relative;
    z-index: 2;
    color: white;
    margin-bottom: 40px;
  }

  .contact-content h2 {
    font-family: 'Cormorant Garamond', serif;
    font-size: 60px;
    font-weight: 500;
    margin-bottom: 8px;
    letter-spacing: 0.05em;
  }

  .contact-content .contact-sub {
    font-size: 14px;
    opacity: 0.7;
    margin-bottom: 20px;
  }

  .contact-content p {
    font-size: 15px;
    line-height: 2;
    opacity: 0.9;
  }

  .btn-arrow {
    position: absolute;
    right: 100px;
    top: 50%;
    transform: translateY(-50%);
    width: 80px; height: 80px;
    border: 2px solid rgba(255,255,255,0.4);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: white;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
  }

  .btn-arrow:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.8);
  }

  /* ===== CONTACT FORM ===== */
  .contact-form {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .contact-form-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
  }

  .contact-form input,
  .contact-form textarea {
    padding: 14px 18px;
    border: 1px solid rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.1);
    color: white;
    font-size: 15px;
    border-radius: 4px;
    outline: none;
    font-family: inherit;
    transition: border-color 0.2s;
  }

  .contact-form input:focus,
  .contact-form textarea:focus {
    border-color: rgba(255,255,255,0.8);
  }

  .contact-form input::placeholder,
  .contact-form textarea::placeholder {
    color: rgba(255,255,255,0.5);
  }

  .contact-form .form-field-half {
    flex: 1;
    min-width: 200px;
  }

  .contact-form textarea {
    resize: vertical;
  }

  .contact-form button {
    align-self: flex-start;
    padding: 14px 40px;
    background: #2563eb;
    color: white;
    border: none;
    font-size: 15px;
    letter-spacing: 0.1em;
    cursor: pointer;
    border-radius: 4px;
    font-family: inherit;
    transition: background 0.3s;
  }

  .contact-form button:hover {
    background: #1d4ed8;
  }

  .contact-form button:focus-visible,
  .contact-form input:focus-visible,
  .contact-form textarea:focus-visible {
    outline: 2px solid rgba(255,255,255,0.8);
    outline-offset: 2px;
  }

  /* ===== FOOTER ===== */
  footer {
    background: white;
    border-top: 1px solid #e5e7eb;
    padding: 40px 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 24px;
  }

  .footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    max-width: min(320px, 42vw);
  }

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

  .footer-nav a {
    text-decoration: none;
    color: var(--text);
    font-size: 13px;
    transition: color 0.2s;
  }

  .footer-nav a:hover { color: var(--accent); }

  .footer-btns {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .footer-btn {
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 13px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
  }

  .footer-btn.outline {
    border: 1px solid var(--accent);
    color: var(--accent);
  }

  .footer-btn.outline:hover { background: var(--light-blue); }

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

  .footer-btn.filled:hover { background: #1d4ed8; }

  /* ===== FOCUS STYLES ===== */
  a:focus-visible,
  button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }

  /* ===== ANIMATIONS ===== */
  .fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
  }

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

  /* ===== RESPONSIVE ===== */
  @media (max-width: 768px) {
    header { padding: 0 10px; }
    nav { gap: 10px; }
    nav a { font-size: 11px; }
    .logo {
      max-width: min(200px, 46vw);
      min-width: 128px;
    }
    .company-inner { grid-template-columns: 1fr; }
    .company-images-placeholder { min-height: 420px; }
    .service-item { grid-template-columns: 1fr; }
    .service-item-text { padding-left: 0; padding-top: 30px; }
    .service-item:nth-child(even) .service-item-img { order: 0; }
    .service-item:nth-child(even) .service-item-text { order: 0; padding-right: 0; }
    .contact-bg { padding: 40px 24px; }
    .contact-content h2 { font-size: 42px; }
    .container { padding: 0 24px; }
    .hero-content h1 { font-size: 36px; }
    #home { padding-left: 30px; }
    .site-logo { height: 48px; }
    .site-logo--footer { height: 36px; }
    nav a.btn-contact {
      padding: 8px 10px;
      font-size: 11px;
      gap: 4px;
    }
    .hero-bg { background-position: 68% center; }
    .hero-overlay {
      background: linear-gradient(
        180deg,
        rgba(7,17,31,0.42) 0%,
        rgba(7,17,31,0.52) 34%,
        rgba(7,17,31,0.74) 100%
      );
    }
    .service-photo { min-height: 260px; }
    footer {
      padding: 24px 24px 28px;
      align-items: flex-start;
      flex-direction: column;
      gap: 16px;
    }
    .footer-logo {
      width: 100%;
      max-width: none;
      justify-content: flex-start;
    }
    .site-logo--footer {
      height: 40px;
    }
    .footer-nav,
    .footer-btns {
      width: 100%;
    }
    .footer-nav {
      justify-content: flex-start;
      gap: 14px;
    }
    .footer-btns {
      align-items: flex-start;
    }
    .footer-btn {
      padding: 9px 16px;
    }
  }

  @media (max-width: 420px) {
    header { padding: 0 8px; }
    nav { gap: 8px; }
    nav a { font-size: 10px; }
    .logo {
      min-width: 120px;
      max-width: 42vw;
    }
    .site-logo { height: 44px; }
    nav a.btn-contact {
      padding: 7px 8px;
      font-size: 10px;
      gap: 3px;
    }
  }