:root {
      --navy-950: #061426;
      --navy-900: #0a2540;
      --navy-800: #102b4c;
      --blue-600: #0068cc;
      --blue-500: #0ea5e9;
      --blue-100: #e6f3ff;
      --sky-50: #f8fbff;
      --slate-900: #0f172a;
      --slate-700: #334155;
      --slate-600: #475569;
      --slate-500: #64748b;
      --slate-300: #cbd5e1;
      --slate-200: #e2e8f0;
      --slate-100: #f1f5f9;
      --white: #fff;
      --max: 1180px;
      --nav-h: 72px;
      --radius-md: 18px;
      --radius-lg: 28px;
      --shadow-sm: 0 8px 24px rgba(10, 37, 64, .08);
      --shadow-md: 0 18px 48px rgba(10, 37, 64, .12);
      --shadow-hero: 0 28px 80px rgba(6, 20, 38, .28);
    }
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 18px); }
    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
      color: var(--slate-900);
      background: var(--white);
      line-height: 1.68;
      word-break: keep-all;
      overflow-wrap: break-word;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }
    body[lang="en"], body[lang="zh-CN"] { word-break: normal; }
    img, svg { display: block; max-width: 100%; }
    a { color: inherit; text-decoration: none; }
    button, select { font: inherit; }
    .container { width: min(100% - 40px, var(--max)); margin: 0 auto; }
    .section { padding: clamp(72px, 8vw, 118px) 0; }
    .section--soft { background: linear-gradient(180deg, var(--sky-50) 0%, #fff 100%); }
    .section-head { max-width: 760px; margin: 0 0 34px; }
    .eyebrow { color: var(--blue-600); font-size: 13px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; margin: 0 0 10px; }
    h1, h2, h3, h4, p { margin-top: 0; }
    h1, h2, h3, h4 { letter-spacing: -.035em; line-height: 1.18; }
    h1 { font-size: clamp(42px, 6vw, 78px); color: var(--white); margin-bottom: 18px; }
    h2 { font-size: clamp(30px, 4vw, 48px); color: var(--navy-900); margin-bottom: 16px; }
    h3 { font-size: clamp(20px, 2vw, 26px); color: var(--navy-900); margin-bottom: 12px; }
    .lead { color: var(--slate-600); font-size: clamp(17px, 1.6vw, 20px); max-width: 760px; }
    .muted { color: var(--slate-600); }
    .skip-link { position: absolute; left: 16px; top: -60px; z-index: 2000; background: var(--navy-900); color: var(--white); padding: 10px 14px; border-radius: 8px; }
    .skip-link:focus { top: 16px; }

    .site-header { position: fixed; inset: 0 0 auto; height: var(--nav-h); z-index: 1000; background: rgba(255, 255, 255, .92); backdrop-filter: blur(18px); border-bottom: 1px solid rgba(226, 232, 240, .92); }
    .header-inner { height: 100%; width: min(100% - 40px, var(--max)); margin: 0 auto; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 24px; }
    .logo { display: inline-flex; align-items: center; min-width: 0; min-height: 44px; }
    .logo img { height: 34px; width: auto; }
    .desktop-nav { display: flex; align-items: center; justify-content: center; gap: clamp(18px, 3vw, 34px); }
    .desktop-nav a { display: inline-flex; align-items: center; min-height: 44px; color: var(--slate-600); font-size: 15px; font-weight: 650; transition: color .18s ease; white-space: nowrap; }
    .desktop-nav a:hover, .desktop-nav a:focus-visible { color: var(--blue-600); }
    .header-actions { display: flex; align-items: center; justify-content: flex-end; gap: 12px; min-width: 0; }
    .language-wrap { position: relative; display: inline-flex; align-items: center; min-height: 44px; }
    .language-wrap::after { content: '▾'; position: absolute; right: 0; top: 50%; transform: translateY(-52%); color: var(--slate-500); pointer-events: none; font-size: 12px; }
    .language-select { appearance: none; border: 0; background: transparent; color: var(--slate-700); font-weight: 650; min-height: 44px; padding: 0 18px 0 2px; cursor: pointer; outline: none; }
    .language-select:focus-visible { color: var(--blue-600); }
    .nav-cta, .btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; border-radius: 999px; font-weight: 750; transition: transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease; white-space: nowrap; }
    .nav-cta { padding: 0 18px; color: var(--white); background: var(--navy-900); box-shadow: 0 10px 26px rgba(10, 37, 64, .18); }
    .nav-cta:hover, .btn:hover { transform: translateY(-1px); }
    .nav-toggle { display: none; width: 44px; height: 44px; border: 0; background: transparent; padding: 9px; cursor: pointer; border-radius: 12px; }
    .nav-toggle span { display: block; height: 3px; width: 100%; background: var(--navy-900); border-radius: 999px; margin: 5px 0; transition: transform .24s ease, opacity .18s ease; }
    .site-header.is-open .nav-toggle span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .site-header.is-open .nav-toggle span:nth-child(2) { opacity: 0; }
    .site-header.is-open .nav-toggle span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
    .mobile-drawer { display: none; position: fixed; top: var(--nav-h); left: 0; right: 0; background: rgba(255,255,255,.98); border-bottom: 1px solid var(--slate-200); box-shadow: var(--shadow-sm); transform: translateY(-115%); visibility: hidden; pointer-events: none; transition: transform .26s ease, visibility .26s ease; }
    .site-header.is-open .mobile-drawer { transform: translateY(0); visibility: visible; pointer-events: auto; }
    .mobile-drawer ul { list-style: none; margin: 0; padding: 10px 22px 18px; }
    .mobile-drawer a { display: flex; min-height: 48px; align-items: center; border-bottom: 1px solid var(--slate-100); color: var(--navy-900); font-weight: 750; }

    .hero { min-height: min(820px, 100svh); padding: calc(var(--nav-h) + clamp(70px, 8vw, 118px)) 0 clamp(76px, 8vw, 108px); position: relative; overflow: hidden; color: var(--white); background-color: #061426; background-image: url('../../images/hero-lab-workbench-gpt.jpg'); background-size: cover; background-position: center right; }
    @supports (background-image: image-set(url('../../images/hero-lab-workbench-gpt.webp') type('image/webp'))) {
      .hero { background-image: image-set(url('../../images/hero-lab-workbench-gpt.webp') type('image/webp'), url('../../images/hero-lab-workbench-gpt.jpg') type('image/jpeg')); }
    }
    .hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(3,12,23,.96) 0%, rgba(6,20,38,.90) 34%, rgba(6,20,38,.58) 58%, rgba(6,20,38,.12) 100%), linear-gradient(180deg, rgba(3,12,23,.18), rgba(3,12,23,.56)); z-index: 0; }
    .hero::after { content: ''; position: absolute; left: -18%; bottom: -30%; width: 58%; aspect-ratio: 1; border-radius: 50%; background: rgba(14,165,233,.10); filter: blur(42px); pointer-events: none; z-index: 0; }
    .hero-inner { position: relative; z-index: 1; width: min(100% - 40px, var(--max)); margin: 0 auto; display: block; }
    .hero-copy { max-width: 760px; min-width: 0; animation: riseIn .72s ease both; }
    .hero h1 { font-size: clamp(42px, 5.1vw, 68px); word-break: keep-all; text-wrap: balance; }
    .hero-subtitle { font-size: clamp(20px, 1.8vw, 27px); line-height: 1.5; color: #dbeafe; max-width: 720px; margin-bottom: 30px; white-space: pre-line; word-break: keep-all; overflow-wrap: normal; text-wrap: balance; }
    html[lang="zh-CN"] .hero h1, html[lang="zh-CN"] .hero-subtitle { word-break: normal; overflow-wrap: anywhere; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .btn { padding: 0 22px; text-decoration: none; }
    .contact-phone { display: inline-flex; align-items: center; min-height: 44px; padding: 0 4px; color: inherit; font-weight: 750; white-space: nowrap; }
    .btn--primary { background: #fff; color: var(--navy-900); box-shadow: 0 18px 42px rgba(2, 6, 23, .26); }
    .btn--primary:hover { box-shadow: 0 22px 48px rgba(2, 6, 23, .32); }
    .btn--ghost { border: 1px solid rgba(255,255,255,.36); color: var(--white); background: rgba(255,255,255,.06); }
    .hero-visual { display: none; min-width: 0; animation: imageIn .86s .08s ease both; }
    .hero-visual-card { position: relative; padding: clamp(8px, 1.6vw, 14px); border-radius: 28px; background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(239,246,255,.96)); border: 1px solid rgba(191,219,254,.40); box-shadow: 0 24px 58px rgba(2,6,23,.26); }
    .hero-visual-card::before { content: ''; position: absolute; inset: auto 9% -18px 9%; height: 36px; border-radius: 999px; background: rgba(14,165,233,.20); filter: blur(22px); z-index: -1; }
    .hero-visual-photo { display: block; width: 100%; aspect-ratio: 16 / 9; overflow: hidden; border-radius: 20px; background: #f8fafc; }
    .hero-visual-photo img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center right; }
    @keyframes riseIn { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }
    @keyframes imageIn { from { opacity: 0; transform: translateY(20px) scale(.98); } to { opacity: 1; transform: translateY(0) scale(1); } }
    @keyframes pulse { 0% { transform: scale(.82); opacity: .62; } 80%, 100% { transform: scale(1.28); opacity: 0; } }

    .intro-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(30px, 5vw, 72px); align-items: start; }
    .intro-panel { position: sticky; top: calc(var(--nav-h) + 28px); padding: clamp(28px, 4vw, 40px); border-radius: var(--radius-lg); background: var(--navy-900); color: #e0f2fe; box-shadow: var(--shadow-md); }
    .intro-panel h2 { color: var(--white); }
    .intro-panel p { color: #dbeafe; margin-bottom: 0; font-size: 18px; }
    .why-board { padding: clamp(28px, 4vw, 44px); border-radius: var(--radius-lg); background: linear-gradient(180deg, #fff 0%, #f8fbff 100%); border: 1px solid var(--slate-200); box-shadow: var(--shadow-sm); }
    .why-board h3 { margin-bottom: 8px; }
    .why-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 24px; }
    .why-card, .service-card, .case-card, .process-step, .contact-card { border: 1px solid var(--slate-200); border-radius: var(--radius-md); background: var(--white); box-shadow: 0 6px 20px rgba(10,37,64,.045); }
    .why-card { padding: 22px; min-height: 188px; display: flex; flex-direction: column; gap: 10px; }
    .card-kicker { color: var(--blue-600); font-size: 13px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
    .why-card h4, .service-card h3, .case-card h3 { margin: 0; color: var(--navy-900); font-size: 21px; line-height: 1.28; letter-spacing: -.025em; }
    .why-card p, .service-card p, .case-card p, .process-step p { color: var(--slate-600); margin: 0; }

    .info-row { display: grid; grid-template-columns: 74px 1fr; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--slate-100); }
    .info-row:last-child { border-bottom: 0; }
    .info-label { color: var(--slate-500); font-size: 14px; font-weight: 800; }
    .info-value { color: var(--navy-900); font-weight: 650; }
    .map-visual { min-height: 190px; display: grid; place-items: center; border-radius: 18px; background: linear-gradient(135deg, #e6f3ff, #f8fbff); border: 1px dashed #93c5fd; text-align: center; padding: 22px; color: var(--navy-900); }
    .map-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
    .map-links a { min-height: 44px; display: inline-flex; align-items: center; padding: 0 13px; border-radius: 999px; background: var(--blue-100); color: var(--navy-900); font-weight: 750; font-size: 14px; }

    .service-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
    .service-card { padding: 24px; min-height: 256px; display: flex; flex-direction: column; gap: 14px; }
    .service-number { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 999px; background: var(--blue-100); color: var(--blue-600); font-weight: 900; }
    .case-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
    .case-card { overflow: hidden; }
    .image-slot { min-height: 178px; position: relative; overflow: hidden; background-color: #0a2540; background-size: cover; background-position: center; }
    .image-slot::before { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(3,12,23,.04), rgba(3,12,23,.22)); pointer-events: none; }
    .image-slot::after { content: ''; position: absolute; inset: 0; border: 1px solid rgba(255,255,255,.12); pointer-events: none; }
    .image-slot[data-image-slot="communication"] { background-image: url('../../images/case-communication-gpt.jpg'); background-position: center; }
    .image-slot[data-image-slot="motor"] { background-image: url('../../images/case-motor-control-gpt.jpg'); background-position: center; }
    .image-slot[data-image-slot="devices"] { background-image: url('../../images/case-devices-gpt.jpg'); background-position: center; }
    @supports (background-image: image-set(url('../../images/case-communication-gpt.webp') type('image/webp'))) {
      .image-slot[data-image-slot="communication"] { background-image: image-set(url('../../images/case-communication-gpt.webp') type('image/webp'), url('../../images/case-communication-gpt.jpg') type('image/jpeg')); }
      .image-slot[data-image-slot="motor"] { background-image: image-set(url('../../images/case-motor-control-gpt.webp') type('image/webp'), url('../../images/case-motor-control-gpt.jpg') type('image/jpeg')); }
      .image-slot[data-image-slot="devices"] { background-image: image-set(url('../../images/case-devices-gpt.webp') type('image/webp'), url('../../images/case-devices-gpt.jpg') type('image/jpeg')); }
    }
    .case-card-body { padding: 24px; }
    .case-card ul { margin: 14px 0 0; padding-left: 18px; color: var(--slate-600); }
    .board-showcase { margin-top: clamp(30px, 5vw, 54px); padding: clamp(26px, 4vw, 44px); border: 1px solid var(--slate-200); border-radius: var(--radius-lg); background: linear-gradient(180deg, #fff 0%, #f8fbff 100%); box-shadow: var(--shadow-sm); }
    .board-showcase-head { max-width: 760px; margin-bottom: 24px; }
    .board-showcase-head h3 { font-size: clamp(26px, 3vw, 38px); margin-bottom: 8px; }
    .board-showcase-head .muted { max-width: 700px; margin-bottom: 0; }
    .board-slider { position: relative; }
    .board-slide { display: none; }
    .board-slide.is-active { display: block; }
    .board-card { overflow: hidden; border: 1px solid var(--slate-200); border-radius: 28px; background: var(--white); box-shadow: 0 18px 42px rgba(10,37,64,.08); }
    .board-image-card { position: relative; width: 100%; max-width: 100%; aspect-ratio: 16 / 9; overflow: hidden; background: radial-gradient(circle at 78% 14%, rgba(14,165,233,.20), transparent 32%), linear-gradient(135deg, #061426 0%, #0a2540 54%, #0b5f91 130%); }
    .board-image-card::before { content: ''; position: absolute; inset: clamp(14px, 2vw, 22px); border: 1px solid rgba(255,255,255,.14); border-radius: 22px; pointer-events: none; z-index: 2; }
    .board-image-card picture, .board-image-card img { position: absolute; inset: 0; width: 100%; height: 100%; }
    .board-image-card img { object-fit: contain; padding: clamp(18px, 3vw, 38px); background: rgba(255,255,255,.04); }
    .board-nav { position: absolute; top: 50%; z-index: 4; width: clamp(42px, 5vw, 54px); height: clamp(42px, 5vw, 54px); display: inline-grid; place-items: center; border: 1px solid rgba(255,255,255,.35); border-radius: 999px; background: rgba(255,255,255,.72); color: var(--navy-900); cursor: pointer; font-size: clamp(24px, 3vw, 34px); font-weight: 900; line-height: 1; box-shadow: 0 12px 26px rgba(6,20,38,.18); backdrop-filter: blur(10px); transform: translateY(-50%); transition: transform .18s ease, background .18s ease, opacity .18s ease; }
    .board-nav:hover, .board-nav:focus-visible { background: rgba(255,255,255,.92); transform: translateY(-50%) scale(1.04); }
    .board-nav-prev { left: clamp(14px, 2.4vw, 28px); }
    .board-nav-next { right: clamp(14px, 2.4vw, 28px); }
    .board-card-title { padding: clamp(18px, 2.4vw, 26px) clamp(18px, 3vw, 30px); text-align: center; color: var(--navy-900); font-size: clamp(22px, 2.5vw, 34px); font-weight: 900; }
    .process-line { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 14px; counter-reset: step; }
    .process-step { padding: 22px; min-height: 220px; position: relative; }
    .process-step::before { counter-increment: step; content: counter(step, decimal-leading-zero); display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 999px; background: var(--navy-900); color: var(--white); font-size: 13px; font-weight: 900; margin-bottom: 16px; }
    .process-step h3 { font-size: 20px; margin-bottom: 8px; }

    .contact-section { background: #fff; color: var(--slate-900); }
    .contact-section h2 { color: var(--navy-900); }
    .contact-section .lead { color: var(--slate-600); margin-left: auto; margin-right: auto; }
    .contact-header { max-width: 760px; margin: 0 auto clamp(34px, 5vw, 56px); text-align: center; }
    .contact-header .eyebrow { margin-left: auto; margin-right: auto; }
    .contact-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(20px, 3vw, 32px); align-items: stretch; }
    .contact-card, .directions-card { border-radius: var(--radius-md); min-height: 346px; }
    .contact-card { padding: clamp(26px, 3.4vw, 34px); background: var(--navy-900); border: 1px solid rgba(255,255,255,.08); box-shadow: var(--shadow-md); color: #dbeafe; }
    .contact-card h3, .directions-card h3 { font-size: clamp(23px, 2.2vw, 30px); margin-bottom: 24px; }
    .contact-card h3 { color: #fff; }
    .contact-card .info-row { grid-template-columns: 74px 1fr; border-bottom-color: rgba(255,255,255,.14); padding: 14px 0; }
    .contact-card .info-label { color: var(--blue-500); }
    .contact-card .info-value, .contact-card a { color: #fff; }
    .directions-card { display: grid; place-items: center; text-align: center; padding: clamp(28px, 4vw, 44px); background: #f1f5f9; border: 1px solid var(--slate-200); color: var(--navy-900); }
    .directions-card .map-visual { min-height: auto; border: 0; background: transparent; padding: 0; color: inherit; }
    .directions-card .map-visual strong { display: block; font-size: 18px; margin-bottom: 18px; }
    .directions-card .map-visual .muted { color: var(--slate-600); margin: 0 0 18px; }
    .directions-card .map-links { justify-content: center; margin-top: 18px; }
    .directions-card .map-links a { background: #fff; color: var(--navy-900); border: 1px solid var(--slate-200); box-shadow: 0 8px 18px rgba(10,37,64,.05); }
    .footer { padding: 28px 0; background: #040d18; color: #cbd5e1; font-size: 14px; }
    .footer-inner { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
    [data-animate] { opacity: 0; transform: translateY(14px); transition: opacity .56s ease, transform .56s ease; }
    [data-animate].is-visible { opacity: 1; transform: translateY(0); }

    @media (max-width: 1100px) {
      .desktop-nav { gap: 18px; }
      .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .process-line { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    }
    @media (max-width: 900px) {
      :root { --nav-h: 68px; }
      .container, .header-inner, .hero-inner { width: min(100% - 32px, var(--max)); }
      .desktop-nav, .nav-cta { display: none; }
      .nav-toggle { display: inline-block; }
      .mobile-drawer { display: block; }
      .header-inner { grid-template-columns: auto 1fr; gap: 12px; }
      .header-actions { justify-self: end; gap: 6px; }
      .logo img { height: 31px; }
      .language-select { max-width: 92px; font-size: 14px; }
      .hero { min-height: min(760px, 100svh); padding-top: calc(var(--nav-h) + 54px); background-color: #061426; background-position: 64% center; }
      .hero::before { display: block; background: linear-gradient(90deg, rgba(3,12,23,.96) 0%, rgba(6,20,38,.90) 46%, rgba(6,20,38,.66) 70%, rgba(6,20,38,.38) 100%), linear-gradient(180deg, rgba(3,12,23,.50), rgba(3,12,23,.70)); }
      .hero::after { right: -24%; left: auto; top: 18%; bottom: auto; width: 66%; background: rgba(14,165,233,.09); }
      .hero-inner { display: grid; grid-template-columns: 1fr; }
      .hero-copy { max-width: none; }
      .hero-visual { display: none; }
      .hero-visual-photo img { object-position: center right; }
      .intro-grid, .contact-layout { grid-template-columns: 1fr; }
      .intro-panel { position: static; }
      .why-grid, .case-grid { grid-template-columns: 1fr; }
      .board-image-card { aspect-ratio: 16 / 11; }
      .process-line { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    }
    @media (max-width: 560px) {
      .container, .header-inner, .hero-inner { width: min(100% - 28px, var(--max)); }
      .header-inner { display: flex; position: relative; justify-content: space-between; gap: 10px; }
      .header-actions { display: block; flex: 0 0 auto; margin-left: auto; }
      .language-wrap { position: fixed; right: 58px; top: 14px; transform: none; width: 68px; overflow: hidden; z-index: 1002; }
      .language-wrap::after { right: 2px; }
      h1 { font-size: clamp(38px, 12vw, 54px); }
      .hero h1 { font-size: clamp(34px, 9.8vw, 42px); line-height: 1.16; white-space: pre-line; text-wrap: wrap; }
      h2 { font-size: clamp(28px, 8vw, 38px); }
      .language-select { width: 68px; max-width: 68px; min-height: 40px; padding-right: 12px; font-size: 13px; }
      .nav-toggle { position: fixed; right: 14px; top: 14px; transform: none; z-index: 1003; display: inline-flex; width: 40px; height: 40px; padding: 0; align-items: center; justify-content: center; background: transparent; color: var(--navy-900); }
      .nav-toggle span { display: none; }
      .nav-toggle::before { content: '☰'; font-size: 30px; line-height: 1; font-weight: 800; }
      .site-header.is-open .nav-toggle::before { content: '×'; font-size: 34px; }
      .hero-subtitle { font-size: 18px; }
      .hero-actions .btn { width: 100%; }
      .hero-visual-card { padding: 8px; border-radius: 22px; }
      .hero-visual-photo { border-radius: 16px; }
      .section { padding: 68px 0; }
      .service-grid, .process-line { grid-template-columns: 1fr; }
      .board-showcase { padding: 22px; }
      .board-image-card { aspect-ratio: 4 / 3; }
      .board-nav { opacity: .92; }
      .board-card-title { font-size: 22px; }
      .service-card, .why-card, .process-step { min-height: auto; }
      .info-row { grid-template-columns: 1fr; gap: 2px; }
      .contact-card .info-row { grid-template-columns: 1fr; gap: 2px; }
      .contact-card, .directions-card { min-height: auto; }
      .footer-inner { flex-direction: column; }
    }
    @media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; } }

/* V4 common navigation */
.mobile-drawer { background: #fff; }
.desktop-nav .nav-dropdown { position: relative; }
.desktop-nav .nav-dropdown > summary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 44px;
  color: var(--slate-600);
  font-size: 15px;
  font-weight: 650;
  cursor: pointer;
  list-style: none;
  white-space: nowrap;
}
.desktop-nav .nav-dropdown > summary::-webkit-details-marker { display: none; }
.desktop-nav .nav-dropdown > summary::after { content: '▾'; color: var(--slate-500); font-size: 11px; transition: transform .18s ease; }
.desktop-nav .nav-dropdown[open] > summary,
.desktop-nav .nav-dropdown > summary:hover,
.desktop-nav .nav-dropdown > summary:focus-visible { color: var(--blue-600); }
.desktop-nav .nav-dropdown[open] > summary::after { transform: rotate(180deg); }
.nav-submenu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  width: min(340px, calc(100vw - 32px));
  padding: 10px;
  border: 1px solid var(--slate-200);
  border-radius: 16px;
  background: rgba(255,255,255,.98);
  box-shadow: var(--shadow-md);
  transform: translateX(-50%);
}
.desktop-nav .nav-submenu a { width: 100%; min-height: 42px; padding: 8px 12px; border-radius: 10px; font-size: 14px; line-height: 1.35; white-space: normal; }
.desktop-nav .nav-submenu a:hover,
.desktop-nav .nav-submenu a:focus-visible { background: var(--blue-100); }
.mobile-services > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  border-bottom: 1px solid var(--slate-100);
  color: var(--navy-900);
  font-weight: 750;
  cursor: pointer;
  list-style: none;
}
.mobile-services > summary::-webkit-details-marker { display: none; }
.mobile-services > summary::after { content: '+'; color: var(--blue-600); font-size: 22px; }
.mobile-services[open] > summary::after { content: '−'; }
.mobile-drawer .mobile-submenu { padding: 4px 0 10px 14px; }
.mobile-drawer .mobile-submenu a { min-height: 44px; padding-left: 10px; color: var(--slate-600); font-size: 14px; font-weight: 650; }
@media (max-width: 560px) {
  .language-wrap { right: 60px; top: 12px; }
  .nav-toggle { right: 12px; top: 12px; width: 44px; height: 44px; }
}

/* Kakao consultation */
.kakao-consult {
  position: fixed;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  z-index: 950;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-width: 44px;
  min-height: 52px;
  padding: 0 18px;
  border: 1px solid rgba(25, 25, 25, .08);
  border-radius: 999px;
  background: #fee500;
  color: #191919;
  box-shadow: 0 14px 34px rgba(10, 37, 64, .22);
  font-size: 16px;
  font-weight: 850;
  line-height: 1;
  white-space: nowrap;
  transition: transform .18s ease, box-shadow .18s ease, opacity .18s ease, visibility .18s ease;
}
.kakao-consult[hidden] { display: none; }
.kakao-consult__icon { width: 24px; height: 24px; flex: 0 0 auto; fill: currentColor; }
.kakao-consult:hover { transform: translateY(-2px); box-shadow: 0 18px 42px rgba(10, 37, 64, .27); }
.kakao-consult:focus-visible { outline: 3px solid #0068cc; outline-offset: 3px; }
.site-header.is-open ~ .kakao-consult { opacity: 0; visibility: hidden; pointer-events: none; }
@media (max-width: 560px) {
  .kakao-consult { min-height: 48px; padding: 0 15px; font-size: 15px; }
}

/* V4 homepage service summaries */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}
.service-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.service-card { grid-column: span 2; min-height: 286px; }
.service-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: auto;
  color: var(--blue-600);
  font-weight: 800;
}
.service-link::after { content: '→'; margin-left: 8px; transition: transform .18s ease; }
.service-link:hover::after,
.service-link:focus-visible::after { transform: translateX(3px); }
.section-action { display: flex; justify-content: center; margin-top: 30px; }
.btn--navy { background: var(--navy-900); color: var(--white); box-shadow: 0 12px 28px rgba(10,37,64,.16); }

/* V4 homepage FAQ preview */
.faq-preview-section { border-top: 1px solid var(--slate-100); }
.faq-preview-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.faq-preview-item {
  align-self: start;
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: 0 6px 20px rgba(10,37,64,.045);
  overflow: hidden;
}
.faq-preview-item > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 76px;
  padding: 18px 22px;
  color: var(--navy-900);
  font-size: 18px;
  font-weight: 800;
  cursor: pointer;
  list-style: none;
}
.faq-preview-item > summary::-webkit-details-marker { display: none; }
.faq-preview-item > summary::after { content: '+'; flex: 0 0 auto; color: var(--blue-600); font-size: 26px; line-height: 1; }
.faq-preview-item[open] > summary::after { content: '−'; }
.faq-preview-item > p { margin: 0; padding: 0 22px 22px; color: var(--slate-600); }
@media (min-width: 1101px) {
  .service-card:nth-child(4) { grid-column: 2 / span 2; }
  .service-card:nth-child(5) { grid-column: 4 / span 2; }
}
@media (max-width: 1100px) { .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } .service-card { grid-column: auto; } }
@media (max-width: 900px) { .faq-preview-list { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .service-grid { grid-template-columns: 1fr; } .faq-preview-item > summary { font-size: 17px; } }