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

  :root {
    --black: #0a0a0a;
    --white: #ffffff;
    --gray: #f5f5f3;
    --mid-gray: #999;
    --accent: #1a1a1a;
    --blue: #0057b8;
    --light-blue: #e8f0fa;
  }

  html { scroll-behavior: smooth; }

  body {
    font-family: 'Noto Sans JP', sans-serif;
    background: var(--white);
    color: var(--black);
    overflow-x: hidden;
  }

  /* ===== HEADER ===== */
  header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    height: 68px;
  }

  .logo {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    font-size: 20px;
    letter-spacing: 0.1em;
    color: var(--black);
    text-decoration: none;
  }
  .logo span { color: var(--blue); }

  nav { display: flex; align-items: center; gap: 32px; }
  nav a {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 13px;
    font-weight: 500;
    color: var(--black);
    text-decoration: none;
    letter-spacing: 0.04em;
    transition: color 0.2s;
  }
  nav a:hover { color: var(--blue); }

  .header-contact {
    background: var(--black);
    color: var(--white) !important;
    padding: 10px 20px;
    border-radius: 2px;
    font-size: 12px !important;
    letter-spacing: 0.06em;
    transition: background 0.2s !important;
  }
  .header-contact:hover { background: var(--blue) !important; color: var(--white) !important; }

  /* ===== HERO / FV ===== */
  .hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: #0d0d10;
    position: relative;
    overflow: hidden;
    padding-top: 68px;
  }

  /* ---- Background gradient base ---- */
  .hero-bg {
    position: absolute;
    inset: 0;
    background:
      radial-gradient(ellipse 55% 70% at 72% 44%, rgba(10,60,140,0.55) 0%, transparent 65%),
      radial-gradient(ellipse 35% 50% at 30% 75%, rgba(5,30,90,0.35) 0%, transparent 60%),
      radial-gradient(ellipse 80% 50% at 50% 100%, rgba(0,20,60,0.5) 0%, transparent 60%);
  }

  /* ---- Noise grain overlay ---- */
  .hero-grain {
    position: absolute;
    inset: 0;
    opacity: 0.04;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-size: 200px 200px;
    pointer-events: none;
  }

  /* ---- SVG canvas for all FV objects ---- */
  .fv-svg-layer {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
  }

  /* obj01 — large outer spiral ring */
  .fv-ring-outer {
    transform-origin: 78% 48%;
    animation: fvRotateSlow 40s linear infinite;
  }
  /* obj02 — medium ring */
  .fv-ring-mid {
    transform-origin: 78% 48%;
    animation: fvRotateSlow 25s linear infinite reverse;
  }
  /* obj03 — inner dashed ring */
  .fv-ring-inner {
    transform-origin: 78% 48%;
    animation: fvRotateSlow 18s linear infinite;
  }
  /* obj04 — small spinning accent */
  .fv-ring-accent {
    transform-origin: 78% 48%;
    animation: fvRotateSlow 10s linear infinite reverse;
  }
  /* obj05 — floating dot cluster */
  .fv-dots { animation: fvFloat 6s ease-in-out infinite; }
  /* obj06 — diagonal line element */
  .fv-lines { animation: fvFloat 8s ease-in-out infinite 1s; }
  /* obj07 — arc sweep */
  .fv-arc {
    transform-origin: 78% 48%;
    animation: fvRotateSlow 15s linear infinite;
  }
  /* obj08 — glowing core */
  .fv-core { animation: fvPulse 3s ease-in-out infinite; }

  @keyframes fvRotateSlow {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
  }
  @keyframes fvFloat {
    0%,100% { transform: translateY(0px); }
    50%     { transform: translateY(-14px); }
  }
  @keyframes fvPulse {
    0%,100% { opacity: 0.7; }
    50%     { opacity: 1; }
  }

  /* ---- Scrolling bottom ticker ---- */
  .hero-ticker {
    position: absolute;
    bottom: 0;
    left: 0; right: 0;
    background: rgba(0,50,120,0.6);
    backdrop-filter: blur(4px);
    overflow: hidden;
    height: 38px;
    display: flex;
    align-items: center;
    border-top: 1px solid rgba(255,255,255,0.06);
  }
  .hero-ticker-inner {
    display: flex;
    white-space: nowrap;
    animation: ticker 22s linear infinite;
    gap: 60px;
  }
  .hero-ticker span {
    font-family: 'Montserrat', sans-serif;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: rgba(255,255,255,0.6);
    text-transform: uppercase;
  }
  .hero-ticker .dot { color: rgba(100,160,255,0.8); font-size: 16px; line-height: 0; }
  @keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-50%); } }

  /* ---- Text content ---- */
  .hero-content {
    position: relative;
    z-index: 2;
    padding: 60px 80px 100px;
    max-width: 700px;
  }

  .hero-eyebrow {
    font-family: 'Montserrat', sans-serif;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.25em;
    color: rgba(100,160,255,0.9);
    text-transform: uppercase;
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    gap: 14px;
    animation: fadeUp 0.8s ease both 0.2s;
  }
  .hero-eyebrow::before {
    content: '';
    display: block;
    width: 32px; height: 1px;
    background: rgba(100,160,255,0.7);
  }

  .hero-title {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: clamp(32px, 4.5vw, 58px);
    font-weight: 700;
    line-height: 1.35;
    color: var(--white);
    letter-spacing: 0.02em;
    margin-bottom: 0;
    animation: fadeUp 0.8s ease both 0.4s;
  }
  .hero-title-en {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(22px, 3vw, 38px);
    font-weight: 800;
    color: transparent;
    -webkit-text-stroke: 1px rgba(255,255,255,0.25);
    letter-spacing: 0.04em;
    margin-top: 6px;
    display: block;
    animation: fadeUp 0.8s ease both 0.5s;
  }

  .hero-sub {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 14px;
    font-weight: 300;
    color: rgba(255,255,255,0.55);
    margin-top: 28px;
    margin-bottom: 44px;
    letter-spacing: 0.06em;
    line-height: 2;
    animation: fadeUp 0.8s ease both 0.6s;
  }

  .hero-cta {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    animation: fadeUp 0.8s ease both 0.75s;
  }

  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(0,87,184,0.9);
    color: var(--white);
    padding: 15px 30px;
    text-decoration: none;
    font-family: 'Montserrat', sans-serif;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    transition: all 0.25s;
    border: 1px solid rgba(100,160,255,0.3);
    text-transform: uppercase;
  }
  .btn-primary:hover { background: #0048a0; transform: translateY(-2px); box-shadow: 0 8px 30px rgba(0,87,184,0.4); }

  .btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: 1px solid rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.75);
    padding: 15px 30px;
    text-decoration: none;
    font-family: 'Montserrat', sans-serif;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.1em;
    transition: all 0.25s;
    text-transform: uppercase;
  }
  .btn-outline:hover { border-color: rgba(100,160,255,0.6); color: var(--white); }

  /* scroll indicator */
  .hero-scroll {
    position: absolute;
    bottom: 58px;
    left: 80px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255,255,255,0.3);
    font-family: 'Montserrat', sans-serif;
    font-size: 9px;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    z-index: 3;
  }
  .scroll-line {
    width: 36px; height: 1px;
    background: rgba(255,255,255,0.15);
    position: relative;
    overflow: hidden;
  }
  .scroll-line::after {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: rgba(100,160,255,0.8);
    animation: scrollLine 2s ease-in-out infinite;
  }
  @keyframes scrollLine { 0%,100%{left:-100%} 50%{left:100%} }

  /* ===== ABOUT ===== */
  .about {
    padding: 120px 80px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    background: var(--white);
  }

  .section-label {
    font-family: 'Montserrat', sans-serif;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--blue);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .section-label::before {
    content: '';
    width: 24px; height: 1px;
    background: var(--blue);
  }

  .section-title-ja {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: clamp(24px, 3vw, 38px);
    font-weight: 700;
    line-height: 1.4;
    color: var(--black);
    margin-bottom: 24px;
  }

  .about-text {
    font-size: 15px;
    line-height: 2;
    color: #444;
    margin-bottom: 32px;
  }

  .about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .feature-card {
    background: var(--gray);
    padding: 24px;
    border-radius: 4px;
    border-left: 3px solid var(--blue);
  }
  .feature-card h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--blue);
    margin-bottom: 8px;
    text-transform: uppercase;
  }
  .feature-card p {
    font-size: 13px;
    color: #555;
    line-height: 1.6;
  }

  .about-visual {
    position: relative;
  }

  .about-diagram {
    background: var(--black);
    border-radius: 8px;
    padding: 48px;
    color: var(--white);
    position: relative;
    overflow: hidden;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }
  .about-diagram::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 70% 30%, rgba(0,87,184,0.3) 0%, transparent 60%);
  }

  .diagram-center {
    position: relative;
    z-index: 1;
    text-align: center;
  }

  .orbit-container {
    width: 260px;
    height: 260px;
    position: relative;
    margin: 0 auto 24px;
  }

  .orbit-ring {
    position: absolute;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 50%;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
  }
  .orbit-ring:nth-child(1) { width: 100%; height: 100%; }
  .orbit-ring:nth-child(2) { width: 65%; height: 65%; border-color: rgba(0,87,184,0.4); animation: orbitSpin 8s linear infinite; }

  @keyframes orbitSpin { from{transform:translate(-50%,-50%) rotate(0deg)} to{transform:translate(-50%,-50%) rotate(360deg)} }

  .orbit-center-text {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
  }
  .orbit-center-text .big {
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--white);
    display: block;
  }

  .orbit-dot {
    position: absolute;
    width: 8px; height: 8px;
    background: var(--blue);
    border-radius: 50%;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 12px rgba(0,87,184,0.8);
  }
  .orbit-dot:nth-child(3) { animation: dotOrbit 8s linear infinite; transform-origin: center; }
  @keyframes dotOrbit {
    from { transform: translate(-50%, -50%) rotate(0deg) translateX(84px); }
    to { transform: translate(-50%, -50%) rotate(360deg) translateX(84px); }
  }

  .orbit-nodes {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
  }
  .orbit-node {
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.15);
    padding: 8px 16px;
    border-radius: 2px;
    font-family: 'Montserrat', sans-serif;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: rgba(255,255,255,0.8);
  }
  .orbit-node.active { background: var(--blue); border-color: var(--blue); color: var(--white); }

  /* ===== BUSINESS ===== */
  .business {
    padding: 100px 80px;
    background: var(--gray);
  }

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

  .view-all {
    font-family: 'Montserrat', sans-serif;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--black);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--black);
    padding-bottom: 2px;
    transition: gap 0.2s;
  }
  .view-all:hover { gap: 14px; color: var(--blue); border-color: var(--blue); }

  .business-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .business-card {
    background: var(--white);
    border-radius: 4px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
  }
  .business-card:hover { transform: translateY(-6px); box-shadow: 0 20px 50px rgba(0,0,0,0.1); }

  .business-card-img {
    aspect-ratio: 1 / 1;
    height: auto;
    background: var(--black);
    position: relative;
    overflow: hidden;
  }
  .business-card-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 50%, rgba(0,0,0,0.4) 100%);
  }
  .bc-img-1 { background: linear-gradient(135deg, #1a2a4a 0%, #0057b8 100%); }
  .bc-img-2 { background: linear-gradient(135deg, #1a3a2a 0%, #0a7a4a 100%); }
  .bc-img-3 { background: linear-gradient(135deg, #3a1a1a 0%, #b83000 100%); }
  .bc-img-4 { background: linear-gradient(135deg, #2a1a3a 0%, #5700b8 100%); }
  .bc-img-5 { background: linear-gradient(135deg, #1a2a3a 0%, #1a5a8a 100%); }
  .bc-img-6 { background: linear-gradient(135deg, #2a3a1a 0%, #5a8a1a 100%); }

  .bc-icon {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    font-size: 56px;
    opacity: 0.6;
  }

  .business-card-body { padding: 24px; }

  .bc-tag {
    display: inline-block;
    font-family: 'Montserrat', sans-serif;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--blue);
    text-transform: uppercase;
    margin-bottom: 10px;
  }

  .bc-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 8px;
    line-height: 1.4;
  }

  .bc-desc {
    font-size: 13px;
    color: #666;
    line-height: 1.7;
  }

  /* ===== SOLUTION PACKAGES ===== */
  .solutions {
    padding: 100px 80px;
    background: var(--black);
    color: var(--white);
  }

  .solutions .section-label { color: rgba(255,255,255,0.5); }
  .solutions .section-label::before { background: rgba(255,255,255,0.4); }

  .solutions .section-title-ja { color: var(--white); }

  .solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
    margin-top: 56px;
  }

  .solution-item {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.07);
    padding: 48px 40px;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
  }
  .solution-item::before {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 3px;
    background: var(--blue);
    transform: scaleX(0);
    transition: transform 0.3s;
  }
  .solution-item:hover { background: rgba(255,255,255,0.07); }
  .solution-item:hover::before { transform: scaleX(1); }

  .sol-num {
    font-family: 'Montserrat', sans-serif;
    font-size: 64px;
    font-weight: 800;
    line-height: 1;
    color: rgba(255,255,255,0.05);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
  }

  .sol-en {
    font-family: 'Montserrat', sans-serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--blue);
    letter-spacing: 0.05em;
    margin-bottom: 8px;
  }

  .sol-ja {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    margin-bottom: 20px;
    letter-spacing: 0.05em;
  }

  .sol-desc {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,0.65);
  }

  /* ===== NEWS ===== */
  .news {
    padding: 100px 80px;
    background: var(--white);
  }

  .news-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 48px;
  }

  .news-tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid #e0e0e0;
    margin-bottom: 40px;
  }
  .news-tab {
    padding: 12px 24px;
    font-size: 13px;
    font-weight: 500;
    color: #999;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.2s;
  }
  .news-tab.active { color: var(--black); border-bottom-color: var(--black); }
  .news-tab:hover { color: var(--black); }

  .news-list { display: flex; flex-direction: column; gap: 0; }

  .news-item {
    display: flex;
    align-items: baseline;
    gap: 24px;
    padding: 20px 0;
    border-bottom: 1px solid #f0f0f0;
    text-decoration: none;
    transition: background 0.15s;
  }
  .news-item:hover .news-title { color: var(--blue); }

  .news-date {
    font-family: 'Montserrat', sans-serif;
    font-size: 12px;
    font-weight: 500;
    color: #999;
    white-space: nowrap;
    min-width: 90px;
    letter-spacing: 0.05em;
  }

  .news-cat {
    font-family: 'Montserrat', sans-serif;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--blue);
    text-transform: uppercase;
    min-width: 110px;
    white-space: nowrap;
    padding: 3px 8px;
    border: 1px solid rgba(0,87,184,0.3);
    border-radius: 2px;
  }

  .news-title {
    font-size: 14px;
    color: var(--black);
    line-height: 1.6;
    transition: color 0.2s;
  }

  /* ===== CONTACT BANNER ===== */
  .contact-banner {
    background: var(--blue);
    padding: 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
  }
  .contact-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 20px,
      rgba(255,255,255,0.03) 20px,
      rgba(255,255,255,0.03) 21px
    );
  }

  .contact-ticker {
    overflow: hidden;
    margin-bottom: 40px;
  }
  .contact-ticker-inner {
    display: flex;
    white-space: nowrap;
    animation: ticker 15s linear infinite;
    gap: 40px;
  }
  .contact-ticker span {
    font-family: 'Montserrat', sans-serif;
    font-size: 48px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: rgba(255,255,255,0.1);
    text-transform: uppercase;
  }

  .contact-content { position: relative; z-index: 1; }
  .contact-content h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 800;
    color: var(--white);
    letter-spacing: -0.01em;
    margin-bottom: 16px;
  }
  .contact-content p {
    font-size: 16px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 36px;
    line-height: 1.8;
  }

  .btn-white {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--white);
    color: var(--blue);
    padding: 18px 40px;
    text-decoration: none;
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.1em;
    transition: all 0.25s;
    border-radius: 2px;
    text-transform: uppercase;
  }
  .btn-white:hover { background: var(--black); color: var(--white); }

  /* ===== FOOTER ===== */
  footer {
    background: #0a0a0a;
    color: rgba(255,255,255,0.6);
    padding: 64px 80px 32px;
  }

  .footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .footer-brand .logo { font-size: 22px; display: block; margin-bottom: 16px; color: var(--white); }
  .footer-brand p { font-size: 13px; line-height: 1.8; color: rgba(255,255,255,0.45); }

  .footer-col h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.8);
    margin-bottom: 20px;
  }
  .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
  .footer-col ul li a {
    color: rgba(255,255,255,0.45);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.2s;
  }
  .footer-col ul li a:hover { color: var(--white); }

  .footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: rgba(255,255,255,0.25);
    font-family: 'Montserrat', sans-serif;
    letter-spacing: 0.05em;
  }

  .voice-bg-fixed {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('img/Voicebackground.jpeg') center/cover no-repeat;
    z-index: -1;
    pointer-events: none;
  }
  @media (max-width: 768px) {
    .voice-bg-fixed {
      background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('img/SPVoicebackground.jpeg') center/cover no-repeat;
    }
  }

  .business-slider-wrapper {
    position: relative;
  }
  .slider-btn {
    display: none;
  }

  .trouble-desc {
    margin-top: 32px;
    text-align: center;
    line-height: 1.8;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 20px;
  }

  .access-row {
    display: flex;
    align-items: flex-start;
    border-bottom: 1px solid #eee;
    padding-bottom: 12px;
    margin-bottom: 12px;
  }
  .access-row strong {
    white-space: nowrap;
    margin-right: 8px;
    width: 6.5em;
  }

  /* ===== MOBILE ===== */
  @media (max-width: 900px) {
    header { padding: 0 20px; }
    /* nav { display: none; } */
    .hero-content { padding: 60px 24px 40px; }
    .hero-scroll { left: 24px; }
    .about { grid-template-columns: 1fr; padding: 60px 24px; gap: 40px; }
    .business { padding: 60px 24px; }
    .business-grid { grid-template-columns: repeat(2, 1fr); }
    .solutions { padding: 60px 24px; }
    .solutions-grid { grid-template-columns: 1fr; }
    .news { padding: 60px 24px; }
    .contact-banner { padding: 60px 24px; }
    footer { padding: 48px 24px 24px; }
    .footer-top { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    .about-features { grid-template-columns: 1fr; }
    .business-header { flex-direction: column; align-items: flex-start; gap: 16px; }
    .news-header { flex-direction: column; align-items: flex-start; gap: 16px; }
    .news-item { flex-direction: column; gap: 8px; }
  }

  /* ===== ANIMATIONS & NEW FEATURES ===== */
  .fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
  }
  .fade-up.visible {
    opacity: 1;
    transform: translateY(0);
  }

  .hero-title {
    word-break: keep-all;
  }
  .sp-only { display: none; }
  .pc-only { display: inline-block; }
  @media (max-width: 768px) {
    .hero-title { font-size: 24px; }
    .sp-only { display: block; }
    .pc-only { display: none !important; }
  }

  .hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1000;
  }
  .hamburger span {
    width: 25px; height: 2px; background: var(--black); transition: 0.3s;
  }

  .trouble { padding: 100px 80px; background: var(--gray); }
  .voice { padding: 100px 80px; background: transparent; }
  .access { padding: 100px 80px; background: var(--white); }
  .voice-card { background: var(--white); padding: 32px; border-radius: 8px; box-shadow: 0 4px 15px rgba(0,0,0,0.03); }
  .trouble-box { max-width: 600px; margin: 0 auto; background: var(--white); padding: 40px 60px; border-radius: 8px; box-shadow: 0 10px 30px rgba(0,0,0,0.05); }
  .trouble-box ul { list-style: none; padding: 0; line-height: 2.5; font-size: 15px; color: #444; }
  .trouble-box li { display: flex; gap: 15px; align-items: flex-start; }
  .trouble-box li span { color: var(--blue); font-weight: bold; font-size: 18px; margin-top: 0; }

  .sp-fixed-buttons {
    display: none;
    position: fixed;
    bottom: 0; left: 0; width: 100%;
    z-index: 998;
  }
  .sp-fixed-buttons a {
    flex: 1; display: flex; justify-content: center; align-items: center;
    height: 60px; color: #fff; font-weight: bold; text-decoration: none; font-size: 15px;
  }
  .sp-fixed-goonet { background: #06c755; }
  .sp-fixed-carsensor { background: #e60012; }

  @media (max-width: 900px) {
    .hamburger { display: flex; }
    nav {
      position: fixed;
      top: 0; right: -100%;
      width: 80%; height: 100vh;
      background: var(--white);
      flex-direction: column;
      padding: 100px 40px 40px;
      transition: right 0.3s ease;
      box-shadow: -2px 0 10px rgba(0,0,0,0.1);
      margin-left: 0 !important;
    }
    nav a { margin: 0 0 20px 0 !important; font-size: 18px !important; }
    nav.active { right: 0; }
    .hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  }

  @media (max-width: 768px) {
    .trouble-desc { text-align: left; }
    .business-grid {
      display: flex;
      flex-wrap: nowrap;
      overflow-x: auto;
      scroll-snap-type: x mandatory;
      gap: 16px;
      width: 100vw;
      margin-left: calc(50% - 50vw);
      padding: 0 calc(50vw - 42.5vw) 24px;
      -ms-overflow-style: none;
      scrollbar-width: none;
      -webkit-overflow-scrolling: touch;
    }
    .business-grid::-webkit-scrollbar {
      display: none;
    }
    .business-card {
      flex: 0 0 85vw;
      width: 85vw;
      scroll-snap-align: center;
    }

    .slider-btn {
      display: flex;
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      width: 44px; height: 44px;
      background: rgba(255, 255, 255, 0.9);
      border-radius: 50%;
      justify-content: center; align-items: center;
      box-shadow: 0 4px 10px rgba(0,0,0,0.2);
      z-index: 10;
      cursor: pointer;
      font-size: 20px;
      color: var(--black);
      user-select: none;
    }
    .slider-prev { left: -10px; }
    .slider-next { right: -10px; }

    .trouble { padding: 60px 20px; }
    .voice { padding: 60px 20px; }
    .access { padding: 60px 20px; }
    .voice-card { padding: 32px 16px; }
    .trouble-box { padding: 30px 20px; }
    .trouble-box li { font-size: 14px; line-height: 1.8; margin-bottom: 15px; }
    
    .sp-fixed-buttons { display: flex; }
    body { padding-bottom: 60px; }
    .back-to-top { bottom: 80px !important; }
  }