:root {
      --paper: #f1f4f2;
      --paper-raised: #f7f9f7;
      --paper-pure: #fcfdfb;
      --ink: #17252a;
      --ink-soft: #52656a;
      --ink-faint: #5f7074;
      --line: #cbd6d2;
      --line-strong: #afbfba;
      --accent: #d96234;
      --accent-strong: #b94a22;
      --accent-ink: #ad431e;
      --accent-on-dark: #ed8a62;
      --accent-soft: #f2ded5;
      --blueprint: #e3ebe8;
      --blueprint-raised: rgba(250, 252, 250, .82);
      --blueprint-soft: #53676b;
      --blueprint-line: rgba(23, 52, 59, .17);
      --blueprint-line-strong: rgba(23, 52, 59, .27);
      --night: #17363d;
      --night-raised: #20434a;
      --night-soft: #b5c6c7;
      --night-line: rgba(226, 239, 237, .14);
      --night-line-strong: rgba(226, 239, 237, .25);
      --surface-radius: 18px;
      --control-radius: 999px;
      --content: 1240px;
      --gutter: clamp(20px, 4vw, 52px);
      --display: "Avenir Next", Avenir, "Helvetica Neue", Helvetica, Arial, "PingFang HK", "PingFang SC", "Microsoft JhengHei", "Microsoft YaHei", sans-serif;
      --mono: "SFMono-Regular", "Cascadia Code", "Roboto Mono", Consolas, monospace;
    }

    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; background: var(--paper); }
    body { margin: 0; min-width: 320px; overflow-x: hidden; background: var(--paper); color: var(--ink); font-family: var(--display); font-synthesis: none; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
    body.menu-open { overflow: hidden; }
    a { color: inherit; text-decoration: none; }
    a, button { touch-action: manipulation; -webkit-tap-highlight-color: rgba(217, 98, 52, .18); }
    button { font: inherit; }
    h1, h2, h3, p { margin: 0; }
    :focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }

    .skip-link { position: fixed; top: 10px; left: 12px; z-index: 100; padding: 10px 16px; border-radius: 10px; background: var(--ink); color: var(--paper-pure); transform: translateY(-160%); transition: transform .2s ease; }
    .skip-link:focus { transform: translateY(0); }
    .shell { width: min(100%, var(--content)); margin-inline: auto; padding-left: max(var(--gutter), env(safe-area-inset-left)); padding-right: max(var(--gutter), env(safe-area-inset-right)); }
    #services, #ai, #method, #about, #contact { scroll-margin-top: 72px; }

    .site-header { position: sticky; top: 0; z-index: 40; height: 72px; border-bottom: 1px solid rgba(23, 52, 59, .1); background: rgba(241, 244, 242, .88); -webkit-backdrop-filter: blur(18px) saturate(1.2); backdrop-filter: blur(18px) saturate(1.2); }
    .nav-wrap { height: 100%; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 36px; }
    .brand { display: inline-flex; align-items: center; min-width: max-content; }
    .brand-name { font-size: 16px; line-height: 1.1; font-weight: 650; letter-spacing: .015em; }
    .desktop-nav { justify-self: center; display: flex; align-items: center; gap: clamp(20px, 2.5vw, 34px); white-space: nowrap; }
    .desktop-nav a { position: relative; padding-block: 10px; font-size: 15px; color: var(--ink-soft); transition: color .25s ease; }
    .desktop-nav a::after { content: ""; position: absolute; right: 0; bottom: 5px; left: 0; height: 1px; background: var(--accent); transform: scaleX(0); transform-origin: right; transition: transform .28s cubic-bezier(.16, 1, .3, 1); }
    .desktop-nav a:hover { color: var(--ink); }
    .desktop-nav a:hover::after { transform: scaleX(1); transform-origin: left; }
    .nav-actions { display: flex; align-items: center; gap: 10px; }

    .language-switch { display: flex; align-items: center; padding: 3px; border: 1px solid var(--line); border-radius: var(--control-radius); background: rgba(248, 249, 247, .65); }
    .language-switch button, .language-switch a { min-width: 36px; height: 30px; padding: 0 10px; border: 0; border-radius: var(--control-radius); background: transparent; color: var(--ink-faint); font-size: 12px; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; transition: background .2s ease, color .2s ease; }
    .language-switch button[aria-pressed="true"], .language-switch a[aria-current="page"] { background: var(--ink); color: var(--paper-pure); }

    .button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 12px; padding: 0 24px; border: 1px solid transparent; border-radius: var(--control-radius); font-size: 15px; font-weight: 650; line-height: 1; white-space: nowrap; cursor: pointer; transition: transform .25s cubic-bezier(.16, 1, .3, 1), background .25s ease, border-color .25s ease, color .25s ease; }
    .button:hover { transform: translateY(-2px); }
    .button:active { transform: translateY(0) scale(.98); }
    .button-primary { background: var(--accent); border-color: var(--accent); color: #111d21; }
    .button-primary:hover { background: #e06b3d; border-color: #e06b3d; }
    .button-light { border-color: rgba(248, 249, 247, .25); background: var(--paper-pure); color: var(--ink); }
    .button .arrow { font-family: var(--mono); font-size: 15px; transition: transform .25s cubic-bezier(.16, 1, .3, 1); }
    .button:hover .arrow { transform: translateX(3px); }

    .menu-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: var(--control-radius); background: transparent; cursor: pointer; }
    .menu-toggle span, .menu-toggle::before, .menu-toggle::after { content: ""; display: block; width: 16px; height: 1px; margin: 4px auto; background: var(--ink); transition: transform .25s ease, opacity .2s ease; }
    .menu-toggle[aria-expanded="true"] span { opacity: 0; }
    .menu-toggle[aria-expanded="true"]::before { transform: translateY(5px) rotate(45deg); }
    .menu-toggle[aria-expanded="true"]::after { transform: translateY(-5px) rotate(-45deg); }
    .mobile-panel { position: fixed; inset: 72px 0 auto; z-index: 35; display: none; padding: 22px max(var(--gutter), env(safe-area-inset-right)) 30px max(var(--gutter), env(safe-area-inset-left)); overscroll-behavior: contain; border-bottom: 1px solid var(--line); background: var(--paper-raised); box-shadow: 0 20px 50px rgba(23, 52, 59, .12); }
    .mobile-panel.is-open { display: block; }
    .mobile-panel nav { display: grid; }
    .mobile-panel nav a { padding: 15px 0; border-bottom: 1px solid var(--line); font-size: 20px; font-weight: 550; }
    .mobile-actions { margin-top: 22px; display: flex; align-items: center; justify-content: flex-start; gap: 16px; }

    .hero { position: relative; min-height: calc(100dvh - 72px); display: grid; align-items: center; overflow: hidden; border-bottom: 1px solid var(--line); background: linear-gradient(rgba(23, 52, 59, .05) 1px, transparent 1px), linear-gradient(90deg, rgba(23, 52, 59, .05) 1px, transparent 1px), var(--paper); background-size: 64px 64px; }
    .hero::before { content: ""; position: absolute; width: min(52vw, 720px); aspect-ratio: 1; top: -33%; right: -16%; border: 1px solid rgba(217, 98, 52, .18); border-radius: 50%; box-shadow: inset 0 0 0 90px rgba(217, 98, 52, .025), inset 0 0 0 180px rgba(217, 98, 52, .025); pointer-events: none; }
    .hero-grid { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(420px, .98fr); align-items: center; gap: clamp(46px, 6vw, 88px); padding-block: clamp(60px, 9vh, 98px); }
    .hero-copy { position: relative; z-index: 1; }
    .hero-kicker { display: flex; align-items: center; gap: 12px; color: var(--ink-soft); font: 600 12px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; }
    .hero-kicker::before { content: ""; width: 34px; height: 2px; background: var(--accent); }
    .hero h1 { margin-top: 25px; font-size: clamp(42px, 4.5vw, 56px); line-height: 1.06; letter-spacing: -.05em; font-weight: 670; text-wrap: balance; }
    .hero h1 span { display: block; }
    .hero h1 .accent-line { color: var(--accent-strong); }
    html[lang="en"] .hero h1 { font-size: clamp(42px, 4.7vw, 58px); letter-spacing: -.04em; }
    .hero-sub { max-width: 560px; margin-top: 25px; color: var(--ink-soft); font-size: clamp(16px, 1.3vw, 18px); line-height: 1.72; text-wrap: pretty; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 33px; }
    .hero-actions .button:hover .arrow { transform: translateY(3px); }

    .system-card { position: relative; z-index: 1; overflow: hidden; border: 1px solid var(--blueprint-line-strong); border-radius: var(--surface-radius); background: linear-gradient(145deg, rgba(255, 255, 255, .52), transparent 42%), var(--blueprint); color: var(--ink); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .72), 0 28px 62px rgba(23, 52, 59, .13), 0 3px 7px rgba(23, 52, 59, .08); }
    .system-card::before { content: ""; position: absolute; inset: 48px 0 0; opacity: .7; background-image: radial-gradient(circle, rgba(23, 52, 59, .14) 1px, transparent 1px); background-size: 20px 20px; -webkit-mask-image: linear-gradient(to bottom, #000, transparent 96%); mask-image: linear-gradient(to bottom, #000, transparent 96%); pointer-events: none; }
    .system-head { min-height: 52px; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 0 18px; border-bottom: 1px solid var(--blueprint-line); font: 600 12px/1 var(--mono); letter-spacing: .09em; color: var(--blueprint-soft); }
    .system-status { display: inline-flex; align-items: center; gap: 8px; letter-spacing: .08em; }
    .system-status::before { content: ""; width: 14px; height: 2px; background: var(--accent); }
    .system-map { position: relative; aspect-ratio: 1.05; min-height: 440px; }
    .system-lines { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
    .system-lines path { fill: none; stroke: rgba(23, 52, 59, .28); stroke-width: 1.2; vector-effect: non-scaling-stroke; }
    .system-lines .flow { stroke: var(--accent); stroke-width: 1.7; stroke-linecap: round; stroke-dasharray: 3 12; animation: signal-flow 3.2s linear 1 both paused; }
    .system-card.is-visible .system-lines .flow { animation-play-state: running; }
    .map-node { position: absolute; z-index: 2; min-width: 112px; padding: 12px 13px; border: 1px solid var(--blueprint-line-strong); border-radius: 12px; background: var(--blueprint-raised); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .78), 0 8px 20px rgba(23, 52, 59, .07); }
    .map-node small { display: block; margin-bottom: 7px; color: var(--accent-ink); font: 600 12px/1 var(--mono); letter-spacing: .07em; }
    .map-node strong { display: block; font-size: 14px; line-height: 1.3; font-weight: 600; }
    .map-node span { display: block; margin-top: 5px; color: var(--blueprint-soft); font-size: 12.5px; line-height: 1.4; }
    .node-input { top: 13%; left: 5%; }
    .node-context { left: 6%; bottom: 14%; }
    .node-tools { right: 5%; top: 12%; }
    .node-review { right: 5%; bottom: 13%; }
    .system-core { position: absolute; z-index: 3; top: 50%; left: 50%; width: 126px; height: 126px; transform: translate(-50%, -50%); display: grid; place-items: center; }
    .core-ring, .core-ring::before, .core-ring::after { position: absolute; inset: 0; content: ""; border: 1px solid rgba(217, 98, 52, .52); border-radius: 50%; }
    .core-ring { animation: core-turn 4.6s cubic-bezier(.16, 1, .3, 1) 1 both paused; }
    .system-card.is-visible .core-ring { animation-play-state: running; }
    .core-ring::before { inset: 12px; border-style: dashed; opacity: .62; }
    .core-ring::after { inset: 28px; border-color: rgba(23, 52, 59, .34); }
    .core-copy { position: relative; z-index: 2; text-align: center; }
    .core-copy strong { display: block; font: 650 12px/1.2 var(--mono); letter-spacing: .07em; }
    .core-copy span { display: block; margin-top: 6px; color: var(--blueprint-soft); font-size: 12px; }
    .system-foot { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--blueprint-line); }
    .system-foot > span { min-height: 52px; display: flex; align-items: center; gap: 8px; padding: 0 14px; border-right: 1px solid var(--blueprint-line); color: var(--blueprint-soft); font: 550 12px/1.35 var(--mono); letter-spacing: .025em; }
    .system-foot > span:last-child { border-right: 0; }
    .system-foot i { width: 5px; height: 5px; flex: none; background: var(--accent); }
    @keyframes signal-flow { to { stroke-dashoffset: -60; } }
    @keyframes core-turn { to { transform: rotate(360deg); } }

    .practice-strip { border-bottom: 1px solid var(--line); background: var(--paper-raised); }
    .practice-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
    .practice-item { min-height: 108px; display: flex; align-items: center; gap: 18px; padding: 24px 26px; border-left: 1px solid var(--line); }
    .practice-item:last-child { border-right: 1px solid var(--line); }
    .practice-item b { color: var(--accent-strong); font: 650 12px/1 var(--mono); letter-spacing: .06em; }
    .practice-item span { color: var(--ink); font-size: 16px; font-weight: 600; }

    .light-section { padding-block: clamp(84px, 10vw, 144px); background: var(--paper); }
    .section-heading { max-width: 760px; }
    .section-title { font-size: clamp(34px, 4.1vw, 58px); line-height: 1.08; letter-spacing: -.045em; font-weight: 650; text-wrap: balance; }
    .section-intro { max-width: 620px; margin-top: 22px; color: var(--ink-soft); font-size: clamp(15px, 1.3vw, 17px); line-height: 1.75; text-wrap: pretty; }

    .services-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 16px; margin-top: clamp(48px, 6vw, 78px); }
    .service { position: relative; min-height: 310px; overflow: hidden; padding: clamp(25px, 3.2vw, 40px); border: 1px solid var(--line); border-radius: var(--surface-radius); background: var(--paper-raised); display: flex; flex-direction: column; transition: transform .35s cubic-bezier(.16, 1, .3, 1), border-color .3s ease, box-shadow .3s ease; }
    .service:hover { transform: translateY(-5px); border-color: var(--line-strong); box-shadow: 0 22px 44px rgba(29, 46, 54, .09); }
    .service-consult { grid-column: span 5; }
    .service-software { grid-column: span 7; background: var(--paper-pure); }
    .service-ai { grid-column: span 7; min-height: 350px; background: var(--night); color: #edf3f1; border-color: var(--night); }
    .service-games { grid-column: span 5; background: var(--accent-soft); border-color: rgba(189, 76, 36, .2); }
    .service-meta { display: flex; align-items: center; justify-content: space-between; gap: 16px; color: var(--ink-faint); font: 600 12px/1 var(--mono); letter-spacing: .09em; }
    .service-ai .service-meta { color: var(--night-soft); }
    .service h3 { margin-top: 44px; max-width: 14ch; font-size: clamp(25px, 2.8vw, 38px); line-height: 1.12; letter-spacing: -.035em; font-weight: 630; }
    .service p { max-width: 46ch; margin-top: 18px; color: var(--ink-soft); font-size: 16px; line-height: 1.7; text-wrap: pretty; }
    .service-ai p { color: var(--night-soft); }
    .service-list { display: flex; flex-wrap: wrap; gap: 8px 18px; margin: auto 0 0; padding: 30px 0 0; list-style: none; }
    .service-list li { display: flex; align-items: center; gap: 8px; color: var(--ink-soft); font-size: 14px; line-height: 1.45; }
    .service-list li::before { content: ""; width: 5px; height: 5px; background: var(--accent); flex: none; }
    .service-ai .service-list li { color: #c2cbce; }
    .service-visual { position: absolute; top: 72px; right: clamp(24px, 3vw, 42px); width: 120px; height: 78px; pointer-events: none; opacity: .75; }
    .decision-bars { display: grid; gap: 9px; }
    .decision-bars i { display: block; height: 6px; background: var(--line); }
    .decision-bars i:nth-child(1) { width: 100%; background: var(--accent); }
    .decision-bars i:nth-child(2) { width: 67%; }
    .decision-bars i:nth-child(3) { width: 84%; }
    .code-planes { display: grid; grid-template-columns: repeat(6, 1fr); gap: 5px; transform: skewY(-8deg); }
    .code-planes i { height: 11px; border: 1px solid var(--line); background: var(--paper); }
    .code-planes i:nth-child(3n + 1), .code-planes i:nth-child(8) { background: var(--accent-soft); border-color: rgba(189, 76, 36, .28); }
    .agent-orbit { width: 92px; height: 92px; top: 62px; }
    .agent-orbit::before, .agent-orbit::after { content: ""; position: absolute; border-radius: 50%; border: 1px solid rgba(237, 241, 240, .3); }
    .agent-orbit::before { inset: 0; border-color: var(--accent); border-style: dashed; animation: core-turn 4.4s cubic-bezier(.16, 1, .3, 1) 1 reverse both paused; }
    .service-ai.is-visible .agent-orbit::before { animation-play-state: running; }
    .agent-orbit::after { inset: 22px; background: var(--accent); border: 0; opacity: .85; }
    .pixel-field { display: grid; grid-template-columns: repeat(7, 8px); gap: 6px; width: auto; }
    .pixel-field i { width: 8px; height: 8px; background: rgba(189, 76, 36, .18); }
    .pixel-field i:nth-child(2), .pixel-field i:nth-child(5), .pixel-field i:nth-child(9), .pixel-field i:nth-child(11), .pixel-field i:nth-child(18), .pixel-field i:nth-child(21), .pixel-field i:nth-child(24), .pixel-field i:nth-child(27) { background: var(--accent-strong); }

    .dark-zone { position: relative; background: var(--night); color: #edf3f1; }
    .dark-zone-start { padding-block: clamp(90px, 11vw, 154px); overflow: hidden; border-radius: 34px 34px 0 0; }
    .dark-zone-start::before { content: ""; position: absolute; inset: 0; opacity: .5; background-image: linear-gradient(rgba(226, 233, 234, .045) 1px, transparent 1px), linear-gradient(90deg, rgba(226, 233, 234, .045) 1px, transparent 1px); background-size: 72px 72px; -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 65%); mask-image: linear-gradient(to bottom, #000 0%, transparent 65%); pointer-events: none; }
    .dark-zone .section-heading { position: relative; z-index: 1; }
    .dark-zone .section-title { color: #edf3f1; }
    .dark-zone .section-intro { color: var(--night-soft); }
    .capability-board { position: relative; z-index: 1; margin-top: clamp(54px, 7vw, 90px); border-top: 1px solid var(--night-line-strong); }
    .capability-row { display: grid; grid-template-columns: 74px minmax(180px, .72fr) minmax(260px, 1.18fr); gap: clamp(18px, 3vw, 46px); align-items: start; padding: clamp(28px, 4vw, 48px) 0; border-bottom: 1px solid var(--night-line); }
    .capability-row > b { padding-top: 5px; color: var(--accent-on-dark); font: 650 12px/1 var(--mono); letter-spacing: .1em; }
    .capability-row h3 { font-size: clamp(22px, 2.3vw, 31px); line-height: 1.18; letter-spacing: -.025em; font-weight: 580; }
    .capability-copy p { max-width: 54ch; color: var(--night-soft); font-size: 16px; line-height: 1.72; }
    .capability-tags { display: flex; flex-wrap: wrap; gap: 9px 20px; margin-top: 20px; }
    .capability-tags span { position: relative; padding-left: 15px; color: #e0e9e7; font-size: 14px; }
    .capability-tags span::before { content: ""; position: absolute; top: .52em; left: 0; width: 5px; height: 5px; background: var(--accent); }

    .method-section { padding-block: clamp(84px, 10vw, 144px); border-top: 1px solid var(--night-line); }
    .method-grid { display: grid; grid-template-columns: minmax(260px, .75fr) minmax(0, 1.25fr); gap: clamp(54px, 9vw, 128px); align-items: start; }
    .method-copy { position: sticky; top: 118px; }
    .method-copy .section-heading { max-width: none; }
    .method-steps { border-top: 1px solid var(--night-line-strong); }
    .method-step { position: relative; display: grid; grid-template-columns: 62px 1fr; gap: 20px; padding: 34px 0 40px; border-bottom: 1px solid var(--night-line); }
    .method-step::after { content: ""; position: absolute; right: 0; bottom: -1px; left: 0; height: 1px; background: var(--accent); transform: scaleX(0); transform-origin: right; transition: transform .5s cubic-bezier(.16, 1, .3, 1); }
    .method-step:hover::after { transform: scaleX(1); transform-origin: left; }
    .method-step > b { padding-top: 6px; color: var(--accent-on-dark); font: 650 12px/1 var(--mono); letter-spacing: .08em; }
    .method-step h3 { font-size: clamp(21px, 2.1vw, 29px); font-weight: 580; line-height: 1.2; letter-spacing: -.025em; }
    .method-step p { max-width: 56ch; margin-top: 14px; color: var(--night-soft); font-size: 16px; line-height: 1.76; text-wrap: pretty; }

    .about-section { padding-block: clamp(82px, 10vw, 142px); border-top: 1px solid var(--night-line); }
    .about-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr); gap: clamp(56px, 9vw, 130px); align-items: center; }
    .about-statement { font-size: clamp(38px, 5vw, 68px); line-height: 1.06; letter-spacing: -.05em; font-weight: 630; text-wrap: balance; }
    .about-body { max-width: 58ch; margin-top: 28px; color: var(--night-soft); font-size: 17px; line-height: 1.78; text-wrap: pretty; }
    .about-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; margin-top: 38px; border-top: 1px solid var(--night-line); border-left: 1px solid var(--night-line); }
    .about-facts span { min-height: 78px; display: flex; align-items: center; padding: 16px 20px; border-right: 1px solid var(--night-line); border-bottom: 1px solid var(--night-line); color: #e0e9e7; font-size: 14px; line-height: 1.5; }
    .construct { position: relative; width: min(100%, 390px); aspect-ratio: 1; margin-inline: auto; display: grid; place-items: center; }
    .construct::before, .construct::after, .construct-ring { content: ""; position: absolute; border: 1px solid var(--night-line-strong); border-radius: 50%; }
    .construct::before { inset: 0; }
    .construct::after { inset: 16%; border-style: dashed; animation: core-turn 4.8s cubic-bezier(.16, 1, .3, 1) 1 both paused; }
    .construct-ring { inset: 32%; border-color: var(--accent); animation: core-turn 4.6s cubic-bezier(.16, 1, .3, 1) 1 reverse both paused; }
    .construct.is-visible::after, .construct.is-visible .construct-ring { animation-play-state: running; }
    .construct-axis-x, .construct-axis-y { position: absolute; background: var(--night-line-strong); }
    .construct-axis-x { width: 100%; height: 1px; }
    .construct-axis-y { width: 1px; height: 100%; }
    .construct-mark { position: relative; z-index: 2; width: 92px; height: 92px; display: grid; place-items: center; background: var(--accent); color: var(--ink); font-size: 31px; font-weight: 750; letter-spacing: -.1em; box-shadow: 0 0 0 14px var(--night), 0 0 0 15px var(--night-line-strong); }
    .construct-code { position: absolute; right: 3%; bottom: 20%; padding: 8px 10px; background: var(--night); color: var(--night-soft); font: 550 12px/1 var(--mono); letter-spacing: .07em; }

    .contact-section { padding-block: clamp(76px, 9vw, 128px); border-top: 1px solid var(--night-line); }
    .contact-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) auto; gap: 44px; align-items: end; }
    .contact-title { max-width: 850px; font-size: clamp(42px, 6vw, 82px); line-height: 1.02; letter-spacing: -.055em; font-weight: 650; text-wrap: balance; }
    .contact-title > span:first-child { color: var(--accent-on-dark); }
    .contact-copy { max-width: 580px; margin-top: 24px; color: var(--night-soft); font-size: 17px; line-height: 1.75; }
    .contact-side { min-width: 225px; display: grid; gap: 16px; }
    .contact-email { padding-bottom: 10px; overflow-wrap: anywhere; border-bottom: 1px solid var(--night-line-strong); color: #e0e9e7; font: 500 14px/1.4 var(--mono); transition: border-color .2s ease, color .2s ease; }
    .contact-email:hover { border-color: var(--accent-on-dark); color: var(--accent-on-dark); }
    .site-footer { padding: 27px 0 34px; border-top: 1px solid var(--night-line); background: var(--night); color: var(--night-soft); }
    .footer-grid { display: flex; align-items: center; justify-content: space-between; gap: 24px; font-size: 13px; line-height: 1.55; }
    .footer-grid p:last-child { text-align: right; }

    [data-reveal] { opacity: 1; transform: none; }
    .js [data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.16, 1, .3, 1), transform .7s cubic-bezier(.16, 1, .3, 1); }
    .js [data-reveal].is-visible { opacity: 1; transform: none; }
    .js.reveal-fallback [data-reveal] { opacity: 1; transform: none; }
    .delay-1 { transition-delay: .08s !important; }

    @media (max-width: 1080px) {
      .desktop-nav { display: none; }
      .nav-wrap { grid-template-columns: minmax(0, 1fr) auto; gap: 18px; }
      .nav-actions { grid-column: 2; justify-self: end; }
      .menu-toggle { display: block; }
      html:not(.js) .menu-toggle { display: none; }
      html:not(.js) .mobile-panel { position: static; display: block; padding-block: 10px 18px; box-shadow: none; }
      html:not(.js) .mobile-panel .mobile-actions { display: none; }
      .hero-grid { grid-template-columns: minmax(0, .95fr) minmax(390px, 1.05fr); gap: 38px; }
      .hero h1 { font-size: clamp(42px, 4.8vw, 52px); }
      .service-visual { opacity: .48; }
    }

    @media (min-width: 1081px) {
      .mobile-panel.is-open { display: none; }
      body.menu-open { overflow: auto; }
    }

    @media (max-width: 820px) {
      .site-header { height: 66px; }
      .mobile-panel { inset-block-start: 66px; }
      .nav-actions .language-switch { display: none; }
      html:not(.js) .mobile-panel .mobile-actions { display: flex; }
      .hero { min-height: auto; }
      .hero-grid { grid-template-columns: 1fr; padding-block: 58px 72px; }
      .hero-copy { max-width: 680px; }
      .hero h1 { font-size: clamp(44px, 8vw, 60px); }
      .system-card { width: min(100%, 620px); justify-self: end; }
      .system-map { min-height: 420px; }
      .practice-grid { grid-template-columns: repeat(2, 1fr); }
      .practice-item:nth-child(3), .practice-item:nth-child(4) { border-top: 1px solid var(--line); }
      .services-grid { grid-template-columns: 1fr; }
      .service-consult, .service-software, .service-ai, .service-games { grid-column: auto; }
      .method-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; }
      .method-copy { position: static; }
      .construct { width: min(82vw, 390px); }
      .contact-side { min-width: 0; width: min(100%, 360px); }
    }

    @media (max-width: 620px) {
      :root { --gutter: 20px; }
      .brand-name { font-size: 15px; }
      .hero { background-size: 46px 46px; }
      .hero::before { width: 90vw; top: -15%; right: -45%; }
      .hero-grid { gap: 42px; padding-block: 48px 60px; }
      .hero-kicker { font-size: 12px; letter-spacing: .075em; }
      .hero h1 { margin-top: 21px; font-size: clamp(38px, 12vw, 54px); letter-spacing: -.045em; }
      .hero-sub { margin-top: 21px; font-size: 16px; line-height: 1.7; }
      .hero-actions { margin-top: 28px; }
      .hero-actions .button { width: 100%; }
      .system-map { min-height: 346px; }
      .system-head { padding-inline: 14px; }
      .map-node { min-width: 93px; padding: 10px; }
      .map-node small { display: none; }
      .map-node strong { font-size: 13px; }
      .map-node span { display: none; }
      .system-core { width: 102px; height: 102px; }
      .system-foot > span { min-height: 50px; padding: 0 9px; font-size: 12px; }
      .practice-grid { grid-template-columns: 1fr; }
      .practice-item { min-height: 64px; border-right: 1px solid var(--line); border-top: 1px solid var(--line); }
      .practice-item:first-child { border-top: 0; }
      .section-title { font-size: 34px; }
      .services-grid { margin-top: 42px; }
      .service { min-height: 340px; padding: 26px 23px; }
      .service h3 { margin-top: 38px; padding-right: 78px; }
      .service-visual { right: 22px; top: 66px; width: 72px; opacity: .38; }
      .capability-row { grid-template-columns: 38px 1fr; gap: 10px 12px; }
      .capability-row > b { grid-row: span 2; }
      .capability-copy { grid-column: 2; }
      .method-step { grid-template-columns: 38px 1fr; gap: 12px; }
      .about-statement { font-size: 38px; }
      .about-facts { grid-template-columns: 1fr; }
      .construct { width: min(88vw, 330px); }
      .contact-title { font-size: 43px; }
      .footer-grid { display: grid; }
      .footer-grid p:last-child { text-align: left; }
    }

    @media (prefers-reduced-motion: reduce) {
      html { scroll-behavior: auto; }
      *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
      .js [data-reveal] { opacity: 1; transform: none; }
    }

    @media (prefers-reduced-transparency: reduce) {
      .site-header { background: var(--paper); -webkit-backdrop-filter: none; backdrop-filter: none; }
      .map-node { background: var(--paper-pure); }
    }