/* --- Design tokens --- */
    :root {
      --bg: #f2f2f2;
      --bg2: #f7f7f7;
      --paper: #fff;
      --ink: #151515;
      --muted: #666;
      --muted2: #9a9a9a;
      --line: rgba(21, 21, 21, .10);
      --line2: rgba(21, 21, 21, .07);
      --red: #e60012;
      --red2: #ff3342;
      --soft: #f3f3f3;
      --warm: #eee;
      --serif: "Noto Serif TC", "Source Han Serif TC", "Songti TC", "STSong", serif;
      --sans: "Noto Sans TC", "Microsoft JhengHei", "PingFang TC", Arial, sans-serif;
      --navH: 80px;
      --navSmallH: 50px;
      --ease: cubic-bezier(.22, .61, .36, 1);
      --max: 1180px;
      --hero-red: #c43027;
      --hero-red-dark: #942018;
      --hero-ink: #15181d;
      --hero-muted: #5e6673;
      --hero-line: rgba(20, 24, 29, .11);
    }

    /* --- Reset & base --- */
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; background: var(--bg); }
    body {
      margin: 0;
      font-family: var(--sans);
      color: var(--ink);
      background: var(--bg);
      font-size: 16px;
      line-height: 1.72;
      overflow-x: hidden;
      text-rendering: optimizeLegibility;
      font-style: normal;
    }
    a { color: inherit; text-decoration: none; }
    button { font: inherit; color: inherit; cursor: pointer; }
    p { margin: 0; }
    h1, h2, h3, .quote, .contact-item strong {
      font-family: var(--serif);
      font-weight: 700;
      line-height: 1.04;
      margin: 0;
      letter-spacing: -.045em;
    }

    .site-bg {
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: -2;
      background: #f2f2f2;
    }
    .site-bg::after {
      content: "";
      position: absolute;
      inset: 0;
      opacity: .38;
      background-image:
        linear-gradient(rgba(0, 0, 0, .035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, .035) 1px, transparent 1px);
      background-size: 24px 24px;
      mask-image: linear-gradient(180deg, #000 0%, transparent 55%);
    }

    .wrap,
    .container {
      width: min(100% - 120px, var(--max));
      margin: 0 auto;
    }
    .wrap { padding: 0 34px; }

    /* --- Navigation --- */
    .nav-shell {
      position: fixed;
      z-index: 1000;
      top: 0;
      left: 50%;
      width: 100%;
      height: var(--navH);
      transform: translateX(-50%) translateZ(0);
      padding: 0 24px;
      background-color: #fff;
      border: 1px solid transparent;
      border-bottom-color: rgba(0, 0, 0, .08);
      box-shadow: 0 1px 0 rgba(0, 0, 0, .03);
      will-change: width, height, top, box-shadow, border-radius, background-color;
      transition:
        width .34s var(--ease),
        height .34s var(--ease),
        top .34s var(--ease),
        border-radius .34s var(--ease),
        box-shadow .34s var(--ease),
        border-color .34s var(--ease),
        background-color .34s var(--ease),
        padding .34s var(--ease);
    }
    .nav-shell.scrolled {
      top: 14px;
      width: min(calc(100% - 40px), 940px);
      height: var(--navSmallH);
      padding: 0 20px;
      border-color: rgba(255, 255, 255, .46);
      border-radius: 4px;
      background-color: rgba(255, 255, 255, .72);
      backdrop-filter: blur(18px) saturate(160%);
      -webkit-backdrop-filter: blur(18px) saturate(160%);
      box-shadow: 0 14px 34px rgba(0, 0, 0, .08);
    }
    .nav-inner {
      width: 100%;
      height: 100%;
      display: flex;
      position: relative;
      align-items: center;
      gap: 22px;
      max-width: var(--max);
      margin: 0 auto;
      transition: gap .34s var(--ease);
    }
    .nav-shell.scrolled .nav-inner {
      gap: 20px;
      max-width: none;
    }
    .brand {
      display: flex;
      align-items: center;
      flex: 0 0 250px;
      min-width: 0;
      height: 100%;
      overflow: hidden;
      transition: flex-basis .34s var(--ease);
    }
    .nav-shell.scrolled .brand {
      flex-basis: 188px;
    }
    .brand img {
      display: block;
      width: 250px;
      max-height: 48px;
      height: auto;
      object-fit: contain;
      transition: width .34s var(--ease), max-height .34s var(--ease);
    }
    .scrolled .brand img {
      width: 188px;
      max-height: 30px;
    }
    .nav-links {
      flex: 0 1 auto;
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 26px;
      margin-left: auto;
      padding: 0;
      white-space: nowrap;
      min-width: 0;
      transition: gap .34s var(--ease);
    }
    .nav-shell.scrolled .nav-links {
      gap: 22px;
    }
    .nav-link {
      position: relative;
      border: 0;
      background: transparent;
      padding: 8px 0;
      font-size: 16px;
      font-weight: 400;
      line-height: 1;
      letter-spacing: .02em;
      color: #191919;
    }
    .nav-shell.scrolled .nav-link {
      padding: 3px 0;
      font-size: 16px;
    }
    .nav-link::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: 0;
      height: 2px;
      background: var(--red);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform .22s ease;
    }
    .nav-link:hover,
    .nav-link.active { color: var(--red); }
    .nav-link.active { font-weight: 700; }
    .nav-link:hover::after,
    .nav-link.active::after { transform: scaleX(1); }
    .nav-actions {
      position: absolute;
      right: 0;
      top: 50%;
      transform: translateY(-50%);
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 10px;
      opacity: 1;
      visibility: visible;
      transition: opacity .22s ease, visibility .22s ease;
    }
    .nav-shell.scrolled .nav-actions {
      opacity: 0;
      visibility: hidden;
      pointer-events: none;
    }
    .nav-cta {
      height: 38px;
      border-radius: 0;
      border: 1px solid var(--red);
      background: var(--red);
      color: #fff;
      padding: 0 18px;
      font-size: 13px;
      letter-spacing: .04em;
      transition: height .34s var(--ease), background .25s ease, transform .25s ease;
    }
    .nav-cta:hover {
      background: #c90010;
      border-color: #c90010;
      transform: translateY(-1px);
    }
    .menu-btn {
      display: none;
      width: 42px;
      height: 42px;
      border: 0;
      border-radius: 0;
      background: transparent;
      position: relative;
    }
    .menu-btn span,
    .menu-btn::before,
    .menu-btn::after {
      content: "";
      position: absolute;
      left: 9px;
      right: 9px;
      height: 2px;
      background: #151515;
      transition: transform .25s ease, opacity .25s ease;
    }
    .menu-btn span { top: 20px; }
    .menu-btn::before { top: 14px; }
    .menu-btn::after { top: 26px; }
    .menu-open .menu-btn span { opacity: 0; }
    .menu-open .menu-btn::before { transform: translateY(6px) rotate(45deg); }
    .menu-open .menu-btn::after { transform: translateY(-6px) rotate(-45deg); }
    .mobile-panel {
      position: fixed;
      z-index: 999;
      top: 0;
      left: 0;
      right: 0;
      padding: 96px 24px 28px;
      background: rgba(255, 255, 255, .96);
      border-bottom: 1px solid var(--line);
      transform: translateY(-115%);
      transition: transform .32s var(--ease);
      box-shadow: 0 22px 70px rgba(24, 23, 22, .12);
    }
    .menu-open .mobile-panel { transform: translateY(0); }
    .mobile-panel a {
      display: block;
      width: 100%;
      text-align: left;
      background: transparent;
      border: 0;
      border-bottom: 1px solid var(--line2);
      padding: 18px 0;
      font-size: 20px;
      font-family: var(--serif);
    }

    /* --- Layout --- */
    main { min-height: 0; }
    .page { display: none; }
    .page.active {
      display: block;
      animation: pageIn .38s var(--ease) both;
    }
    @keyframes pageIn {
      from { opacity: 0; transform: translateY(10px); }
      to { opacity: 1; transform: none; }
    }

    /* --- Hero --- */
    .hero {
      position: relative;
      min-height: 794px;
      padding: 110px 0 44px;
      overflow: hidden;
      border-bottom: 1px solid rgba(20, 24, 29, .08);
      background:
        radial-gradient(circle at 50% 8%, rgba(196, 48, 39, .12), transparent 26%),
        linear-gradient(180deg, #fff 0%, #faf7f2 52%, #f2f5f8 100%);
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 80px 0 auto 0;
      height: 420px;
      pointer-events: none;
      opacity: .75;
      background-image:
        linear-gradient(rgba(20, 24, 29, .045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(20, 24, 29, .045) 1px, transparent 1px);
      background-size: 52px 52px;
      mask-image: radial-gradient(circle at 50% 38%, #000 0%, transparent 70%);
    }
    .hero-grid {
      position: relative;
      z-index: 1;
      display: flex;
      flex-direction: column;
      gap: 34px;
      align-items: center;
      justify-content: center;
      min-height: 640px;
      text-align: center;
    }
    .hero-grid > div:first-child {
      max-width: 980px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      align-items: center;
    }
    .hero .eyebrow {
      color: var(--hero-red);
      font-weight: 600;
      font-size: 13px;
      letter-spacing: .18em;
      text-transform: uppercase;
      margin-bottom: 16px;
    }
    .hero h1 {
      font-size: clamp(58px, 8.7vw, 118px);
      letter-spacing: -.035em;
      max-width: 1040px;
      line-height: .98;
      color: var(--hero-ink);
    }
    .hero p {
      font-size: clamp(17px, 1.5vw, 22px);
      color: var(--hero-muted);
      max-width: 760px;
      margin: 28px auto 30px;
      line-height: 1.75;
    }
    .hero-actions {
      display: flex;
      gap: 14px;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
    }
    .hero .btn {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 12px 22px;
      border: 1px solid var(--red);
      border-radius: 8px;
      background: var(--red);
      color: #fff;
      font-weight: 600;
      transition: all .22s ease;
    }
    .hero .btn:hover {
      transform: translateY(-2px);
      background: var(--hero-red-dark);
      border-color: var(--hero-red-dark);
    }
    .hero .btn.ghost {
      background: transparent;
      color: var(--hero-ink);
      border-color: var(--hero-line);
    }
    .hero .btn.ghost:hover {
      border-color: var(--hero-red);
      color: var(--hero-red-dark);
      background: #fff;
    }
    .hero .feature-row {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      margin-top: 30px;
      border-top: 1px solid rgba(20, 24, 29, .12);
      border-bottom: 1px solid rgba(20, 24, 29, .12);
    }
    .hero .feature-row span {
      min-width: 132px;
      padding: 13px 22px;
      font-weight: 600;
      color: #303640;
      border-left: 1px solid rgba(20, 24, 29, .12);
    }
    .hero .feature-row span:first-child { border-left: 0; }

    /* --- Buttons (site-wide) --- */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      height: 48px;
      padding: 0 28px;
      border: 1px solid var(--red);
      border-radius: 0;
      background: var(--red);
      color: #fff;
      font-weight: 700;
      letter-spacing: .04em;
      transition: transform .22s ease, background .22s ease, border-color .22s ease;
    }
    .btn:hover {
      transform: translateY(-2px);
      background: #c90010;
      border-color: #c90010;
    }
    .btn.secondary {
      background: #fff;
      color: var(--ink);
      border-color: rgba(0, 0, 0, .16);
    }
    .btn.secondary:hover {
      border-color: var(--red);
      color: var(--red);
      background: #fff;
    }

    /* --- Sections --- */
    .section {
      padding: 96px 0;
      border-bottom: 1px solid rgba(0, 0, 0, .08);
      background: var(--bg);
    }
    .section.white { background: #fff; }
    .page[data-page="/cases"] .page-hero {
      border-bottom: 0;
    }
    .page[data-page="/cases"] .section.white {
      padding-top: 48px;
    }
    .page[data-page="/cases"] .section.white .container::before {
      content: "";
      display: block;
      border-top: 1px solid rgba(0, 0, 0, .08);
      margin-bottom: 48px;
    }
    .page[data-page="/case-detail"] .section.white { padding-top: 40px; }
    .section-head {
      display: grid;
      grid-template-columns: .62fr 1fr;
      gap: 60px;
      align-items: end;
      margin-bottom: 46px;
    }
    .kicker {
      font-size: 12px;
      letter-spacing: .18em;
      text-transform: uppercase;
      color: var(--red);
      font-weight: 800;
    }
    .section h2 {
      font-size: 52px;
      font-weight: 700;
      margin-top: 10px;
      color: #151515;
    }
    .section-head p {
      font-size: 17px;
      color: #5d6470;
      line-height: 1.9;
      max-width: 680px;
    }
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      border: 1px solid rgba(0, 0, 0, .08);
      background: #fff;
    }
    .service-item {
      min-height: 270px;
      padding: 34px 30px;
      border-right: 1px solid rgba(0, 0, 0, .08);
      border-bottom: 1px solid rgba(0, 0, 0, .08);
      background: #f6f6f6;
      transition: transform .25s ease, background .25s ease;
    }
    .service-item:hover {
      background: var(--red);
      color: #fff;
      transform: translateY(-6px);
    }
    .service-item .no {
      font-size: 24px;
      color: var(--red);
      font-weight: 900;
      letter-spacing: .16em;
    }
    .service-item h3 {
      font-size: 27px;
      margin: 32px 0 16px;
      letter-spacing: -.02em;
      color: #151515;
    }
    .service-item p {
      color: #666;
      font-size: 15px;
      line-height: 1.75;
    }
    .service-item:hover .no,
    .service-item:hover h3 { color: #fff; }
    .service-item:hover p { color: rgba(255, 255, 255, .78); }
    .value-band {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 56px;
      align-items: center;
      background: #fff;
      padding: 70px 72px;
      border-left: 10px solid var(--red);
      box-shadow: 0 18px 55px rgba(0, 0, 0, .06);
    }
    .quote {
      font-size: 40px;
      line-height: 1.4;
      color: #171717;
    }
    .quote-side {
      border-left: 1px solid rgba(0, 0, 0, .12);
      padding-left: 30px;
      color: #5d6470;
    }
    .quote-side p {
      font-size: 16px;
    }
    .quote-side img {
      display: block;
      margin-top: 22px;
      width: 240px;
      max-width: 100%;
    }

    /* --- Inner pages --- */
    .page-hero {
      padding: 146px 0 74px;
      position: relative;
      overflow: hidden;
      color: #151515;
      border-bottom: 1px solid rgba(0, 0, 0, .08);
      background: linear-gradient(180deg, #fff 0%, var(--bg) 100%);
    }
    .page-hero::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0;
      bottom: 0;
      width: 12px;
      background: var(--red);
    }
    .page-hero .container { position: relative; }
    .page-hero .kicker { margin-bottom: 16px; }
    .page-hero h1 {
      font-size: clamp(48px, 7vw, 92px);
      max-width: 1060px;
      font-weight: 300;
    }
    .page[data-page="/about"] .page-hero h1,
    .page[data-page="/services"] .page-hero h1,
    .page[data-page="/cases"] .page-hero h1,
    .page[data-page="/contact"] .page-hero h1 {
      font-size: 70px;
      font-weight: 700;
    }
    .page-hero p {
      font-size: 19px;
      color: var(--muted);
      max-width: 810px;
      margin-top: 26px;
    }
    .case-detail-hero {
      background: none;
      border-bottom: 0;
      padding-top: 110px;
      padding-bottom: 80px;
    }
    .case-detail-hero::before { display: none; }
    .case-detail-hero h1 { font-size: 60px; }
    #detail-title { font-weight: 700; }
    .back-link {
      height: 42px;
      border: 1px solid var(--red);
      background: transparent;
      color: var(--red);
      font-size: 14px;
      font-weight: 700;
      padding: 0 18px;
      margin-bottom: 24px;
    }
    .two-col {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 72px;
    }
    .prose p {
      margin-bottom: 20px;
      color: #49433d;
    }
    .about-image {
      margin-bottom: 42px;
      border: 1px solid rgba(0, 0, 0, .08);
    }
    .about-image img {
      display: block;
      width: 100%;
      height: auto;
    }
    .value-grid,
    .contact-grid {
      display: grid;
      border-top: 1px solid rgba(0, 0, 0, .08);
      border-left: 1px solid rgba(0, 0, 0, .08);
    }
    .value-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-cta {
      max-width: 680px;
      margin-bottom: 56px;
    }
    .contact-cta h2 {
      font-size: 58px;
      line-height: 1.15;
      font-weight: 500;
      letter-spacing: -.04em;
      color: #151515;
    }
    .contact-cta h2 span {
      color: var(--red);
    }
    .contact-cta p {
      margin-top: 34px;
      color: #151515;
      font-size: 16px;
      line-height: 1.9;
    }
    .contact-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 36px;
    }
    .value-item,
    .contact-item {
      padding: 26px 30px;
      background: #fff;
      border-right: 1px solid rgba(0, 0, 0, .08);
      border-bottom: 1px solid rgba(0, 0, 0, .08);
    }
    .value-item h3 {
      font-size: 25px;
      margin-bottom: 10px;
      color: #151515;
    }
    .case-row {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 64px;
      align-items: center;
      padding: 52px 0;
      background: #fff;
      border-bottom: 1px solid rgba(0, 0, 0, .08);
      cursor: pointer;
    }
    .case-row:nth-child(even) { direction: rtl; }
    .case-row:nth-child(even) > * { direction: ltr; }
    .case-cover,
    .detail-cover,
    .detail-showcase-image {
      position: relative;
      overflow: hidden;
      background: #f5f6f8;
    }
    .case-cover {
      aspect-ratio: 1672 / 941;
    }
    .detail-cover {
      aspect-ratio: 16 / 9;
    }
    .case-cover::before,
    .detail-cover::before,
    .detail-showcase-image::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(rgba(21, 21, 21, .06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(21, 21, 21, .06) 1px, transparent 1px);
      background-size: 28px 28px;
    }
    .case-cover::after,
    .detail-cover::after,
    .detail-showcase-image::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(230, 0, 18, .22), transparent 54%);
    }
    .detail-showcase {
      display: grid;
      gap: 24px;
    }
    .detail-showcase-image img {
      display: block;
      width: 100%;
      height: auto;
    }
    .case-cover img {
      display: block;
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-cover.has-image::before,
    .case-cover.has-image::after,
    .detail-showcase-image.has-image::before,
    .detail-showcase-image.has-image::after {
      display: none;
    }
    .cover-1 { background: linear-gradient(135deg, #eef2f6 0%, #dfe7ef 100%); }
    .cover-2 { background: linear-gradient(135deg, #f3f0ee 0%, #e7e0da 100%); }
    .cover-3 { background: linear-gradient(135deg, #edf3ef 0%, #dbe7df 100%); }
    .cover-4 { background: linear-gradient(135deg, #f3eef1 0%, #e7dde3 100%); }
    .case-content {
      display: grid;
      gap: 18px;
      align-content: start;
    }
    .case-topline {
      display: flex;
      align-items: center;
      gap: 18px;
    }
    .case-row .index {
      font-size: 42px;
      font-weight: 500;
      color: var(--red);
    }
    .case-row h3 {
      font-size: 28px;
      transition: transform .25s ease, color .25s ease;
    }
    .case-row p {
      color: var(--muted);
      max-width: 760px;
      margin-top: 8px;
    }
    .case-meta {
      font-size: 14px;
      color: var(--muted);
      letter-spacing: .12em;
      text-transform: uppercase;
    }
    .arrow {
      width: 44px;
      height: 44px;
      border: 1px solid rgba(0, 0, 0, .18);
      display: grid;
      place-items: center;
      transition: transform .25s ease, background .25s ease, color .25s ease;
    }
    .case-row:hover h3 {
      transform: translateX(8px);
      color: var(--red);
    }
    .case-row:hover .arrow {
      transform: translateX(5px);
      background: var(--red);
      border-color: var(--red);
      color: #fff;
    }
    .detail-grid {
      display: grid;
      gap: 42px;
    }
    .detail-h2 {
      font-size: 32px;
      font-weight: 500;
      margin: 10px 0 24px;
      color: #151515;
    }
    .detail-overview {
      color: var(--muted);
      font-size: 18px;
    }
    .detail-tech { margin-top: 42px; }
    .detail-article {
      min-width: 0;
    }
    .detail-content-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 42px;
      align-items: start;
    }
    .detail-content-grid .detail-tech {
      margin-top: 0;
    }
    .detail-tech-title,
    .detail-showcase-title {
      font-size: 32px !important;
      font-weight: 400 !important;
    }
    .detail-overview-title {
      font-size: 44px !important;
    }
    .detail-image-block {
      margin-top: 42px;
    }
    .facts {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 28px;
      background: transparent;
      border-top: 0;
      padding: 0 0 40px;
      border-bottom: 1px solid rgba(0, 0, 0, .10);
    }
    .fact {
      padding: 0;
      border-bottom: 0;
    }
    .fact span {
      display: block;
      font-size: 11px;
      letter-spacing: .28em;
      color: var(--muted2);
      font-weight: 700;
    }
    .fact strong {
      display: block;
      margin-top: 14px;
      font-family: var(--serif);
      font-size: 18px;
      line-height: 1.45;
      font-weight: 400;
    }
    .tech-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-top: 26px;
    }
    .tech-list div {
      background: #f5f6f8;
      padding: 12px 14px;
      color: #3e3935;
    }
    .pager {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      margin-top: 58px;
      border-top: 1px solid rgba(0, 0, 0, .10);
      padding-top: 24px;
    }
    .case-nav {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
      margin-top: 58px;
      border-top: 1px solid rgba(0, 0, 0, .10);
      padding-top: 24px;
    }
    .case-nav button {
      border: 0;
      background: transparent;
      padding: 0;
      text-align: left;
    }
    .case-nav button:last-child { text-align: right; }
    .case-nav span {
      display: block;
      color: var(--red);
      font-size: 12px;
      letter-spacing: .16em;
      font-weight: 900;
      margin-bottom: 10px;
    }
    .case-nav strong {
      display: block;
      font-family: var(--serif);
      font-size: 18px;
      line-height: 1.2;
    }
    .case-nav-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .case-nav button:last-child .case-nav-action {
      justify-content: flex-end;
    }
    .case-nav-arrow {
      width: 32px;
      height: 32px;
      border: 1px solid rgba(0, 0, 0, .18);
      display: grid;
      place-items: center;
      flex: 0 0 auto;
    }
    .contact-item span {
      display: block;
      color: var(--red);
      font-size: 12px;
      letter-spacing: .16em;
      font-weight: 900;
    }
    .contact-item strong {
      font-size: 18px;
      line-height: 1.6;
      display: block;
      margin-top: 18px;
      color: #151515;
    }

    /* --- Footer --- */
    footer {
      background: #151515;
      color: #fff;
      padding: 54px 0 34px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr repeat(3, 1fr);
      gap: 36px;
    }
    .footer-logo {
      width: 246px;
      max-width: 100%;
    }
    .footer-tagline {
      max-width: 360px;
      margin-top: 18px;
      color: rgba(255, 255, 255, .68);
    }
    footer h4 {
      font-family: var(--serif);
      margin: 0 0 14px;
      font-size: 18px;
    }
    footer p,
    footer button {
      color: rgba(255, 255, 255, .68);
      font-size: 14px;
      background: transparent;
      border: 0;
      padding: 0;
      display: block;
      margin: 8px 0;
      text-align: left;
    }
    .copy {
      border-top: 1px solid rgba(255, 255, 255, .14);
      margin-top: 36px;
      padding-top: 20px;
      color: rgba(255, 255, 255, .48);
      font-size: 13px;
    }

    /* --- Responsive --- */
    @media (max-width: 980px) {
      .hero {
        min-height: auto;
        padding: 112px 0 54px;
      }
      .hero-grid {
        min-height: auto;
        gap: 30px;
      }
      .section-head,
      .value-band,
      .two-col,
      .detail-grid { grid-template-columns: 1fr; gap: 34px; }
      .service-grid,
      .value-grid,
      .contact-grid { grid-template-columns: 1fr; }
      .contact-cta h2 { font-size: 42px; }
      .service-item { min-height: 220px; }
      .case-row {
        grid-template-columns: 1fr;
        gap: 28px;
        padding: 34px 0;
      }
      .case-row:nth-child(even) { direction: ltr; }
      .case-content { gap: 14px; }
      .detail-content-grid { grid-template-columns: 1fr; gap: 34px; }
      .facts { grid-template-columns: 1fr; gap: 24px; }
      .case-nav { grid-template-columns: 1fr; }
      .case-nav button:last-child { text-align: left; }
      .case-nav button:last-child .case-nav-action { justify-content: flex-start; }
      .page-hero { padding: 124px 0 60px; }
      .value-band { padding: 44px 28px; }
      .quote-side {
        border-left: 0;
        padding-left: 0;
        border-top: 1px solid rgba(0, 0, 0, .12);
        padding-top: 24px;
      }
    }

    @media (max-width: 900px) {
      .wrap,
      .container { width: min(100% - 48px, var(--max)); }
      .nav-shell,
      .nav-shell.scrolled {
        top: 0;
        left: 50%;
        width: 100%;
        height: var(--navH);
        transform: translateX(-50%) translateZ(0);
        padding: 0 16px;
        border-radius: 0;
        border: 0;
        border-bottom: 1px solid rgba(0, 0, 0, .08);
        box-shadow: none;
        background-color: #fff;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
      }
      .nav-inner,
      .nav-shell.scrolled .nav-inner {
        display: flex;
        justify-content: space-between;
        align-items: center;
        max-width: none;
        gap: 12px;
      }
      .nav-shell.scrolled .brand {
        flex-basis: auto;
      }
      .nav-actions,
      .nav-shell.scrolled .nav-actions {
        position: static;
        transform: none;
        flex: 0 0 auto;
        display: flex;
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
      }
      .nav-links,
      .nav-cta { display: none; }
      .nav-shell.scrolled .nav-actions { display: flex; }
      .brand { flex: 0 1 auto; min-width: 0; }
      .brand img,
      .scrolled .brand img {
        width: 220px;
        max-height: 46px;
      }
      .menu-btn { display: block; }
      .section,
      .page-hero { padding: 76px 0; }
      .case-detail-hero h1 { font-size: 60px; }
      .footer-grid { grid-template-columns: 1fr; }
      .tech-list { grid-template-columns: 1fr; }
    }

    @media (max-width: 640px) {
      .wrap { padding: 0 20px; }
      .hero h1 {
        font-size: 50px;
        letter-spacing: -.02em;
      }
      .hero .feature-row { width: 100%; }
      .hero .feature-row span {
        min-width: 50%;
        border-top: 1px solid rgba(20, 24, 29, .12);
      }
      .hero .feature-row span:nth-child(1),
      .hero .feature-row span:nth-child(2) { border-top: 0; }
      .hero .feature-row span:nth-child(odd) { border-left: 0; }
    }
  </style>