/* ── Variables ─────────────────────────────────────────── */
    :root {
      --page:        #f7f9fc;
      --paper:       #ffffff;
      --paper-soft:  #f1f5f9;
      --ink:         #0d1526;
      --ink-2:       #1e293b;
      --body:        #4b5a70;
      --muted:       #7083a0;
      --line:        rgba(15,23,60,.1);
      --line-mid:    rgba(15,23,60,.16);
      --brand:       #0c2060;
      --brand-mid:   #1a3aab;
      --brand-soft:  #eef2ff;
      --accent:      #03c75a;
      --accent-dk:   #02a04a;
      --accent-soft: #eafaf2;
      --warn:        #f59e0b;
      --sh-xs: 0 1px 4px rgba(12,20,55,.06);
      --sh-sm: 0 2px 12px rgba(12,20,55,.08);
      --sh:    0 4px 24px rgba(12,20,55,.09);
      --sh-lg: 0 12px 48px rgba(12,20,55,.13);
      --glow:  0 8px 32px rgba(26,58,171,.22);
      --r:   10px;
      --r-s:  6px;
      --max:  1200px;
      --nav-h: 70px;
      --font: "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif;
    }

    /* ── Reset ─────────────────────────────────────────────── */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; background: var(--page); }
    body {
      font-family: var(--font);
      color: var(--ink);
      line-height: 1.65;
      background:
        radial-gradient(ellipse at 12% 8%,  rgba(26,58,171,.055) 0%, transparent 50%),
        radial-gradient(ellipse at 88% 12%, rgba(3,199,90,.055)  0%, transparent 50%),
        linear-gradient(180deg, #fff 0%, var(--page) 60%, #eef1f8 100%);
      overflow-x: hidden;
    }
    a   { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }
    button { border: 0; cursor: pointer; font: inherit; background: none; }

    /* ── Layout ────────────────────────────────────────────── */
    .container {
      width: min(100%, var(--max));
      margin: 0 auto;
    }
    section {
      position: relative;
      padding: 100px 24px;
      scroll-margin-top: var(--nav-h);
    }
    main { min-height: calc(100vh - var(--nav-h)); }

    section[data-page] { display: none; }
    section[data-page].active-page { display: block; }
    section[data-page]:not(.hero):not(.trust):not(.biz-pillars) {
      min-height: calc(100vh - var(--nav-h));
      padding-top: calc(var(--nav-h) + 80px);
    }

    /* ── Type helpers ──────────────────────────────────────── */
    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 12px;
      font-size: 11.5px;
      font-weight: 700;
      letter-spacing: .08em;
      text-transform: uppercase;
      color: var(--brand-mid);
    }
    .section-kicker::before {
      content: "";
      width: 6px; height: 6px;
      border-radius: 50%;
      background: var(--accent);
      flex-shrink: 0;
    }
    .section-title {
      font-size: clamp(28px, 3.4vw, 44px);
      font-weight: 800;
      line-height: 1.2;
      letter-spacing: -.02em;
      color: var(--ink);
    }
    .section-desc {
      margin-top: 16px;
      max-width: 640px;
      font-size: 17px;
      color: var(--body);
      line-height: 1.78;
    }

    /* ── Navigation ────────────────────────────────────────── */
    .site-header {
      position: fixed;
      inset: 0 0 auto;
      z-index: 100;
      height: var(--nav-h);
      background: rgba(255,255,255,.92);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
    }
    .nav {
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .brand-mark {
      width: 36px; height: 36px;
      display: grid;
      place-items: center;
      background: var(--brand);
      color: #fff;
      font-size: 13px;
      font-weight: 900;
      border-radius: 8px;
      letter-spacing: -.03em;
    }
    .brand-logo { height: 30px; width: auto; display: block; object-fit: contain; }
    .footer-logo { height: 44px; }
    .brand-fallback { display: flex; align-items: center; gap: 10px; }
    .brand-text { display: flex; flex-direction: column; line-height: 1.15; }
    .brand-text strong { font-size: 16px; font-weight: 800; color: var(--ink); letter-spacing: -.01em; }
    .brand-text span   { font-size: 10.5px; font-weight: 600; color: var(--muted); }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 2px;
    }
    .nav-link {
      padding: 8px 12px;
      font-size: 14px;
      font-weight: 600;
      color: var(--body);
      border-radius: var(--r-s);
      transition: color .15s, background .15s;
    }
    .nav-link:hover     { color: var(--brand);     background: var(--brand-soft); }
    .nav-link.active    { color: var(--brand-mid); font-weight: 700; }
    .nav-cta {
      margin-left: 8px;
      padding: 9px 18px;
      background: var(--brand);
      color: #fff;
      font-size: 14px;
      font-weight: 700;
      border-radius: var(--r-s);
      transition: background .15s, box-shadow .15s, transform .15s;
    }
    .nav-cta:hover { background: var(--brand-mid); box-shadow: var(--glow); transform: translateY(-1px); }

    /* ── Nav dropdown ──────────────────────────────── */
    .nav-item { position: relative; }
    .nav-trigger {
      display: flex;
      align-items: center;
      gap: 5px;
    }
    .nav-trigger::after {
      content: "";
      width: 5px; height: 5px;
      border-right: 1.5px solid currentColor;
      border-bottom: 1.5px solid currentColor;
      transform: rotate(45deg) translateY(-1px);
      transition: transform .18s;
      flex-shrink: 0;
      opacity: .65;
    }
    .nav-item:hover .nav-trigger::after,
    .nav-item.open  .nav-trigger::after { transform: rotate(-135deg) translateY(1px); }
    .nav-dropdown {
      position: absolute;
      top: calc(100% + 10px);
      left: 50%;
      transform: translateX(-50%) translateY(-6px);
      min-width: 172px;
      background: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--r);
      box-shadow: var(--sh-lg);
      padding: 6px;
      opacity: 0;
      visibility: hidden;
      transition: opacity .18s, transform .18s, visibility .18s;
      z-index: 110;
    }
    .nav-item:hover .nav-dropdown,
    .nav-item.open   .nav-dropdown {
      opacity: 1;
      visibility: visible;
      transform: translateX(-50%) translateY(0);
    }
    .nav-dropdown a {
      display: flex;
      align-items: center;
      gap: 9px;
      padding: 9px 12px;
      font-size: 13.5px;
      font-weight: 600;
      color: var(--body);
      border-radius: var(--r-s);
      transition: color .12s, background .12s;
    }
    .nav-dropdown a::before {
      content: "";
      width: 4px; height: 4px;
      border-radius: 50%;
      background: var(--line-mid);
      flex-shrink: 0;
    }
    .nav-dropdown a:hover { color: var(--brand-mid); background: var(--brand-soft); }
    .nav-dropdown a:hover::before { background: var(--brand-mid); }

    /* ── Timeline (연혁) ──────────────────────────── */
    .timeline { margin-top: 56px; display: grid; gap: 0; }
    .tl-block {
      display: grid;
      grid-template-columns: 72px 1fr;
      gap: 0 32px;
      padding-bottom: 40px;
    }
    .tl-year {
      padding-top: 4px;
      font-size: clamp(26px, 2.8vw, 38px);
      font-weight: 900;
      color: var(--brand);
      letter-spacing: -.03em;
      line-height: 1;
      border-right: 2px solid var(--line);
    }
    .tl-events { display: grid; gap: 0; }
    .tl-event {
      display: flex;
      gap: 14px;
      padding: 12px 0;
      border-bottom: 1px solid var(--line);
    }
    .tl-event:last-child { border-bottom: 0; }
    .tl-dot {
      flex-shrink: 0;
      width: 8px; height: 8px;
      border-radius: 50%;
      background: var(--brand-mid);
      margin-top: 7px;
      border: 2px solid #fff;
      box-shadow: 0 0 0 2px var(--brand-mid);
    }
    .tl-content strong { display: block; font-size: 15px; font-weight: 800; color: var(--ink); line-height: 1.4; }
    .tl-content span   { display: block; margin-top: 3px; font-size: 13.5px; color: var(--body); line-height: 1.6; }

    .tl-pre-label {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 20px;
      font-size: 12px;
      font-weight: 800;
      letter-spacing: .07em;
      text-transform: uppercase;
      color: var(--muted);
    }
    .tl-pre-label span {
      font-weight: 700;
      color: var(--brand-mid);
      background: var(--brand-soft);
      border: 1px solid rgba(26,58,171,.12);
      border-radius: 99px;
      padding: 2px 10px;
      font-size: 11px;
    }

    /* ── Certifications ──────────────────────────── */
    .cert-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-top: 48px;
    }
    .cert-card {
      background: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--r);
      padding: 32px 24px 28px;
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      box-shadow: var(--sh-xs);
      transition: box-shadow .2s, transform .2s;
    }
    .cert-card:hover { box-shadow: var(--sh); transform: translateY(-4px); }
    .cert-icon {
      width: 52px; height: 52px;
      display: grid;
      place-items: center;
      border-radius: 12px;
      margin-bottom: 18px;
      flex-shrink: 0;
    }
    .cert-icon svg { width: 26px; height: 26px; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
    .cert-icon.is-brand { background: var(--brand-soft); color: var(--brand-mid); }
    .cert-icon.is-edu   { background: var(--accent-soft); color: var(--accent-dk); }
    .cert-icon.is-sec   { background: #fef3c7; color: #b45309; }
    .cert-card strong {
      font-size: 16px;
      font-weight: 800;
      color: var(--ink);
      line-height: 1.35;
      margin-bottom: 8px;
    }
    .cert-card p {
      font-size: 13.5px;
      color: var(--body);
      line-height: 1.7;
      flex: 1;
      margin-bottom: 16px;
    }
    .cert-tag {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      padding: 4px 10px;
      border-radius: 99px;
      font-size: 11px;
      font-weight: 700;
    }
    .cert-tag.brand { color: var(--brand-mid); background: var(--brand-soft); border: 1px solid rgba(26,58,171,.12); }
    .cert-tag.edu   { color: var(--accent-dk); background: var(--accent-soft); border: 1px solid rgba(3,199,90,.16); }
    .cert-tag.sec   { color: #b45309; background: #fef3c7; border: 1px solid rgba(180,83,9,.14); }

    @media (max-width: 1040px) {
      .cert-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 720px) {
      .cert-grid { grid-template-columns: 1fr; }
      .tl-block  { grid-template-columns: 56px 1fr; gap: 0 20px; }
      /* 모바일에서 드롭다운 인라인 표시 */
      .nav-item .nav-dropdown {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        border: 0;
        background: transparent;
        padding: 0 0 4px 8px;
        min-width: 0;
      }
      .nav-item .nav-trigger::after { display: none; }
    }

    .menu-toggle {
      display: none;
      width: 40px; height: 40px;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--line);
      border-radius: var(--r-s);
      color: var(--ink);
      background: var(--paper);
    }
    .menu-toggle span,
    .menu-toggle span::before,
    .menu-toggle span::after {
      display: block;
      width: 18px; height: 1.5px;
      background: currentColor;
      transition: transform .2s, opacity .2s;
    }
    .menu-toggle span { position: relative; }
    .menu-toggle span::before,
    .menu-toggle span::after { content: ""; position: absolute; left: 0; }
    .menu-toggle span::before { top: -6px; }
    .menu-toggle span::after  { top: 6px; }
    .menu-toggle.open span { background: transparent; }
    .menu-toggle.open span::before { transform: translateY(6px)  rotate(45deg); }
    .menu-toggle.open span::after  { transform: translateY(-6px) rotate(-45deg); }

    /* ── Buttons ───────────────────────────────────────────── */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 48px;
      padding: 0 22px;
      border-radius: var(--r-s);
      font-size: 15px;
      font-weight: 700;
      transition: background .15s, border-color .15s, box-shadow .15s, transform .15s;
    }
    .btn:hover { transform: translateY(-2px); }
    .btn-primary {
      background: var(--brand);
      color: #fff;
      box-shadow: 0 4px 16px rgba(12,32,96,.2);
    }
    .btn-primary:hover { background: var(--brand-mid); box-shadow: var(--glow); }
    .btn-outline {
      border: 1.5px solid var(--line-mid);
      color: var(--brand-mid);
      background: var(--paper);
    }
    .btn-outline:hover { border-color: rgba(26,58,171,.3); box-shadow: var(--sh-sm); }

    /* ── Hero ──────────────────────────────────────────────── */
    .hero {
      min-height: 100vh;
      display: grid;
      align-items: center;
      padding-top: calc(var(--nav-h) + 60px);
      padding-bottom: 80px;
      overflow: hidden;
    }
    #particleCanvas { display: none; }
    .hero-layout {
      position: relative;
      display: grid;
      grid-template-columns: 1fr 400px;
      align-items: center;
      gap: 56px;
    }
    .hero-copy { max-width: 820px; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 24px;
      padding: 7px 14px;
      background: var(--accent-soft);
      border: 1px solid rgba(3,199,90,.22);
      border-radius: 999px;
      color: var(--accent-dk);
      font-size: 13px;
      font-weight: 700;
    }
    .pulse-dot {
      width: 7px; height: 7px;
      border-radius: 50%;
      background: var(--accent);
      animation: pulse 2.2s infinite;
    }
    @keyframes pulse {
      0%   { box-shadow: 0 0 0 0   rgba(3,199,90,.45); }
      70%  { box-shadow: 0 0 0 8px rgba(3,199,90,0);   }
      100% { box-shadow: 0 0 0 0   rgba(3,199,90,0);   }
    }
    .hero h1 {
      font-size: clamp(40px, 5.8vw, 72px);
      font-weight: 900;
      line-height: 1.08;
      letter-spacing: -.03em;
      color: var(--ink);
    }
    .hero h1 span { display: block; color: var(--brand-mid); }
    .hero-sub {
      margin-top: 24px;
      font-size: clamp(16px, 1.7vw, 19px);
      color: var(--body);
      line-height: 1.78;
      max-width: 580px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 36px;
    }

    /* Hero panel */
    .hero-panel {
      background: var(--paper);
      border: 1px solid var(--line);
      border-radius: 14px;
      box-shadow: var(--sh-lg);
      overflow: hidden;
    }
    .hero-panel-head {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 16px 18px;
      background: var(--brand-soft);
      border-bottom: 1px solid var(--line);
    }
    .hero-panel-head .dot {
      width: 8px; height: 8px;
      border-radius: 50%;
      background: var(--accent);
    }
    .hero-panel-head span {
      font-size: 11px;
      font-weight: 800;
      color: var(--brand);
      letter-spacing: .07em;
      text-transform: uppercase;
    }
    .system-card { padding: 14px; display: grid; gap: 9px; }
    .sys-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 12px 14px;
      background: var(--paper-soft);
      border: 1px solid var(--line);
      border-left: 3px solid var(--brand-mid);
      border-radius: var(--r-s);
    }
    .sys-row:nth-child(2) { border-left-color: var(--accent); }
    .sys-row:nth-child(3) { border-left-color: var(--brand); }
    .sys-row strong { display: block; font-size: 13px; font-weight: 700; color: var(--ink); }
    .sys-row span   { display: block; font-size: 11px; color: var(--muted); margin-top: 2px; }
    .status {
      flex-shrink: 0;
      padding: 3px 9px;
      border-radius: 99px;
      font-size: 10px;
      font-weight: 800;
      letter-spacing: .05em;
      color: var(--accent-dk);
      background: var(--accent-soft);
      border: 1px solid rgba(3,199,90,.2);
    }
    .hero-badges {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      border-top: 1px solid var(--line);
    }
    .badge {
      padding: 14px 10px;
      border-right: 1px solid var(--line);
      text-align: center;
    }
    .badge:last-child { border-right: 0; }
    .badge span     { display: block; font-size: 9px;   font-weight: 700; color: var(--muted);     letter-spacing: .07em; text-transform: uppercase; margin-bottom: 5px; }
    .badge strong   { display: block; font-size: 11.5px; font-weight: 800; color: var(--brand);    line-height: 1.35; }

    /* ── Trust bar ─────────────────────────────────────────── */
    .trust {
      padding: 0 24px;
      background: var(--paper);
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }
    .trust-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
    }
    .trust-item {
      padding: 30px 28px;
      border-right: 1px solid var(--line);
    }
    .trust-item:first-child { border-left: 1px solid var(--line); }
    .trust-number {
      font-size: clamp(32px, 4vw, 48px);
      font-weight: 900;
      color: var(--brand);
      line-height: 1;
      letter-spacing: -.03em;
    }
    .trust-label {
      margin-top: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--body);
    }

    /* ── Shared card base ──────────────────────────────────── */
    .service-card,
    .case-card,
    .job-card,
    .program-card {
      position: relative;
      background: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--r);
      box-shadow: var(--sh-xs);
      transition: border-color .2s, box-shadow .2s, transform .2s;
    }
    .service-card:hover,
    .job-card:hover,
    .program-card:hover {
      border-color: rgba(26,58,171,.22);
      box-shadow: var(--sh);
      transform: translateY(-4px);
    }
    .icon-box {
      display: grid;
      place-items: center;
      width: 44px; height: 44px;
      border-radius: var(--r-s);
      background: var(--brand-soft);
      color: var(--brand-mid);
      margin-bottom: 18px;
    }
    .icon-box svg {
      width: 22px; height: 22px;
      stroke: currentColor;
      fill: none;
      stroke-width: 2;
      stroke-linecap: round;
      stroke-linejoin: round;
    }

    /* ── Services ──────────────────────────────────────────── */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-top: 48px;
    }
    .service-card { padding: 26px; min-height: 220px; }
    .service-card h3 { font-size: 18px; font-weight: 800; color: var(--ink); margin-bottom: 10px; }
    .service-card p  { font-size: 14.5px; color: var(--body); line-height: 1.72; }

    /* ── Education ─────────────────────────────────────────── */
    .education-layout {
      display: grid;
      grid-template-columns: 310px 1fr;
      gap: 28px;
      align-items: start;
      margin-top: 48px;
    }
    .education-panel {
      position: sticky;
      top: calc(var(--nav-h) + 24px);
      background: var(--brand);
      color: #fff;
      border-radius: var(--r);
      padding: 28px;
      box-shadow: var(--sh-lg);
    }
    .education-panel h3 { font-size: 20px; font-weight: 800; line-height: 1.35; color: #fff; }
    .education-panel p  { margin-top: 12px; font-size: 14px; color: rgba(255,255,255,.72); line-height: 1.72; }
    .education-metrics {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 8px;
      margin-top: 24px;
    }
    .education-metric {
      background: rgba(255,255,255,.1);
      border-radius: var(--r-s);
      padding: 14px 8px;
      text-align: center;
    }
    .education-metric strong { display: block; font-size: 21px; font-weight: 900; color: #fff; letter-spacing: -.02em; }
    .education-metric span   { display: block; margin-top: 4px; font-size: 10.5px; font-weight: 600; color: rgba(255,255,255,.62); }

    .program-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
    }
    .program-card { padding: 22px; min-height: 220px; }
    .program-card h3 { font-size: 17px; font-weight: 800; color: var(--ink); margin-bottom: 8px; }
    .program-card p  { font-size: 14px; color: var(--body); line-height: 1.7; }

    .curriculum {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 14px;
    }
    .curriculum span {
      padding: 4px 10px;
      background: var(--brand-soft);
      border: 1px solid rgba(26,58,171,.12);
      border-radius: 99px;
      font-size: 11.5px;
      font-weight: 700;
      color: var(--brand-mid);
    }
    .education-cta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      margin-top: 16px;
      padding: 22px;
      background: var(--brand-soft);
      border: 1px solid rgba(26,58,171,.12);
      border-radius: var(--r);
    }
    .education-cta strong { display: block; font-size: 15.5px; font-weight: 800; color: var(--ink); line-height: 1.42; }
    .education-cta span   { display: block; margin-top: 4px; font-size: 13px; color: var(--body); }

    /* ── About / Why ───────────────────────────────────────── */
    .why {
      background: linear-gradient(180deg, transparent, rgba(238,242,255,.5) 50%, transparent);
    }
    .why-layout {
      display: grid;
      grid-template-columns: 1fr 420px;
      align-items: center;
      gap: 64px;
    }
    .check-list {
      list-style: none;
      display: grid;
      gap: 14px;
      margin-top: 32px;
    }
    .check-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 16px;
      font-weight: 600;
      color: var(--ink-2);
    }
    .check-list svg {
      flex-shrink: 0;
      width: 20px; height: 20px;
      margin-top: 2px;
      color: var(--accent);
    }
    .architecture {
      position: relative;
      min-height: 460px;
      background: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--r);
      box-shadow: var(--sh);
      overflow: hidden;
    }
    .architecture::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(var(--line) 1px, transparent 1px),
        linear-gradient(90deg, var(--line) 1px, transparent 1px);
      background-size: 40px 40px;
    }
    .node {
      position: absolute;
      width: 128px;
      padding: 12px 14px;
      background: var(--paper);
      border: 1px solid var(--line-mid);
      border-radius: var(--r-s);
      box-shadow: var(--sh-sm);
    }
    .node strong { display: block; font-size: 12.5px; font-weight: 800; color: var(--ink); }
    .node span   { display: block; margin-top: 3px; font-size: 11px; color: var(--muted); }
    .node-core {
      top: 44%; left: 50%;
      transform: translate(-50%, -50%);
      width: 148px;
      background: var(--brand);
      border-color: transparent;
      box-shadow: var(--sh-lg);
    }
    .node-core strong { color: #fff; }
    .node-core span   { color: rgba(255,255,255,.68); }
    .node-a { top: 48px;  left: 36px;  }
    .node-b { top: 60px;  right: 40px; }
    .node-c { bottom: 56px; left: 50px; }
    .node-d { bottom: 60px; right: 44px; }
    .path-line {
      position: absolute;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(26,58,171,.45), transparent);
      transform-origin: left center;
      animation: shimmer 3.6s ease-in-out infinite;
    }
    .line-1 { top: 165px; left: 142px; width: 218px; transform: rotate(22deg); }
    .line-2 { top: 165px; right: 142px; width: 206px; transform: rotate(158deg); }
    .line-3 { bottom: 158px; left: 154px; width: 214px; transform: rotate(-22deg); }
    .line-4 { bottom: 156px; right: 148px; width: 212px; transform: rotate(202deg); }
    @keyframes shimmer {
      0%, 100% { opacity: .28; }
      50%       { opacity: .82; }
    }

    /* ── Trust split ───────────────────────────────────────── */
    .trust-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
    }
    .trust-group { display: flex; flex-direction: column; }
    .trust-group:first-child { border-right: 1px solid var(--line); }
    .trust-group-lbl {
      padding: 20px 28px 8px;
      font-size: 10.5px;
      font-weight: 800;
      letter-spacing: .08em;
      text-transform: uppercase;
      display: flex;
      align-items: center;
      gap: 7px;
    }
    .trust-group-lbl::before { content: ""; width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
    .trust-group-lbl.is-msp { color: var(--brand-mid); }
    .trust-group-lbl.is-msp::before { background: var(--brand-mid); }
    .trust-group-lbl.is-edu { color: var(--accent-dk); }
    .trust-group-lbl.is-edu::before { background: var(--accent); }
    .trust-group-inner { display: grid; grid-template-columns: repeat(2, 1fr); flex: 1; }
    .trust-split .trust-item { border-right: 1px solid var(--line); }
    .trust-split .trust-group:first-child .trust-item:first-child { border-left: 1px solid var(--line); }
    .trust-split .trust-group:last-child  .trust-item:last-child  { border-right: 1px solid var(--line); }
    .trust-split .trust-group:last-child  .trust-item:first-child { border-left: 0; }

    /* ── Biz pillars (home) ─────────────────────────────── */
    .biz-pillars {
      padding: 0 24px 0;
      background: var(--paper);
      border-bottom: 1px solid var(--line);
    }
    .pillars-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      padding: 60px 0;
    }
    .pillar-card {
      border-radius: var(--r);
      padding: 40px 36px;
      display: flex;
      flex-direction: column;
      min-height: 280px;
      overflow: hidden;
    }
    .pillar-msp { background: var(--brand); }
    .pillar-edu { background: var(--ink-2); }
    .pillar-lbl {
      font-size: 10.5px;
      font-weight: 800;
      letter-spacing: .1em;
      text-transform: uppercase;
      color: rgba(255,255,255,.55);
      margin-bottom: 10px;
    }
    .pillar-title {
      font-size: clamp(22px, 2.4vw, 30px);
      font-weight: 900;
      line-height: 1.2;
      letter-spacing: -.02em;
      color: #fff;
      margin-bottom: 14px;
    }
    .pillar-desc {
      font-size: 14.5px;
      line-height: 1.72;
      color: rgba(255,255,255,.65);
      flex: 1;
      margin-bottom: 24px;
    }
    .pillar-stats {
      display: flex;
      gap: 28px;
      padding: 16px 0;
      border-top: 1px solid rgba(255,255,255,.12);
      border-bottom: 1px solid rgba(255,255,255,.12);
      margin-bottom: 24px;
    }
    .pillar-stat strong { display: block; font-size: 26px; font-weight: 900; color: #fff; letter-spacing: -.02em; }
    .pillar-stat span   { display: block; font-size: 11px; font-weight: 600; color: rgba(255,255,255,.5); margin-top: 2px; }
    .pillar-btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 11px 20px;
      border-radius: var(--r-s);
      font-size: 13.5px;
      font-weight: 700;
      width: fit-content;
      color: #fff;
      border: 1.5px solid rgba(255,255,255,.28);
      background: rgba(255,255,255,.1);
      transition: background .15s, transform .15s;
    }
    .pillar-btn:hover { background: rgba(255,255,255,.22); transform: translateY(-2px); }
    .pillar-msp .pillar-btn { border-color: rgba(255,255,255,.32); }
    @media (max-width: 720px) {
      .pillars-grid { grid-template-columns: 1fr; }
      .trust-split  { grid-template-columns: 1fr; }
      .trust-group:first-child { border-right: 0; border-bottom: 1px solid var(--line); }
    }

    /* ── Featured partner ──────────────────────────────────── */
    .featured-partner {
      display: flex;
      align-items: center;
      gap: 28px;
      margin-top: 40px;
      padding: 28px 32px;
      background: var(--paper);
      border: 1px solid var(--line);
      border-left: 4px solid var(--accent);
      border-radius: var(--r);
      box-shadow: var(--sh-sm);
    }
    .fp-badge {
      flex-shrink: 0;
      writing-mode: vertical-lr;
      text-orientation: upright;
      transform: none;
      font-size: 10px;
      font-weight: 800;
      letter-spacing: .04em;
      text-transform: uppercase;
      color: var(--accent-dk);
      background: var(--accent-soft);
      border: 1px solid rgba(3,199,90,.2);
      border-radius: 4px;
      padding: 10px 6px;
    }
    .fp-logo {
      flex-shrink: 0;
      display: flex;
      align-items: center;
      padding-right: 28px;
      border-right: 1px solid var(--line);
    }
    .fp-logo svg { width: 180px; height: auto; }
    .fp-info { flex: 1; }
    .fp-info strong { display: block; font-size: 17px; font-weight: 800; color: var(--ink); margin-bottom: 8px; }
    .fp-info p { font-size: 14px; color: var(--body); line-height: 1.72; margin-bottom: 14px; }
    .fp-tags { display: flex; flex-wrap: wrap; gap: 6px; }
    .fp-tags span {
      padding: 4px 10px;
      border-radius: 99px;
      font-size: 11.5px;
      font-weight: 700;
      color: var(--brand-mid);
      background: var(--brand-soft);
      border: 1px solid rgba(26,58,171,.12);
    }
    @media (max-width: 720px) {
      .featured-partner { flex-direction: column; align-items: flex-start; gap: 16px; }
      .fp-badge { writing-mode: horizontal-tb; transform: none; }
      .fp-logo { border-right: 0; border-bottom: 1px solid var(--line); padding-right: 0; padding-bottom: 16px; }
    }

    /* ── Partners ──────────────────────────────────────────── */
    .partners {
      padding: 80px 24px;
      background: var(--paper);
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }
    .marquee {
      position: relative;
      margin-top: 40px;
      overflow: hidden;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }
    .marquee::before,
    .marquee::after {
      content: "";
      position: absolute;
      top: 0; bottom: 0;
      z-index: 2;
      width: 100px;
      pointer-events: none;
    }
    .marquee::before { left:  0; background: linear-gradient(90deg,  var(--paper), transparent); }
    .marquee::after  { right: 0; background: linear-gradient(270deg, var(--paper), transparent); }
    .logo-track {
      display: flex;
      width: max-content;
      animation: marquee 30s linear infinite;
    }
    .logo-track:hover { animation-play-state: paused; }
    @keyframes marquee {
      from { transform: translateX(0); }
      to   { transform: translateX(-50%); }
    }
    .logo-item {
      display: grid;
      place-items: center;
      width: 180px; height: 88px;
      border-right: 1px solid var(--line);
    }
    .logo-item img {
      width: 140px; height: 40px;
      object-fit: contain;
      filter: grayscale(1) opacity(.6);
      transition: filter .2s, transform .2s;
    }
    .logo-item:hover img { filter: none; transform: translateY(-2px); }
    .logo-note { margin-top: 20px; text-align: center; font-size: 12.5px; color: var(--muted); }

    /* ── Cases ─────────────────────────────────────────────── */
    .case-tabs {
      display: flex;
      gap: 4px;
      margin-top: 36px;
      padding-bottom: 1px;
      border-bottom: 1px solid var(--line);
    }
    .case-tab {
      padding: 9px 18px;
      font-size: 14px;
      font-weight: 700;
      color: var(--body);
      border: 0;
      border-bottom: 2px solid transparent;
      margin-bottom: -1px;
      background: none;
      cursor: pointer;
      border-radius: var(--r-s) var(--r-s) 0 0;
      transition: color .15s, border-color .15s, background .15s;
    }
    .case-tab:hover  { color: var(--brand-mid); background: var(--brand-soft); }
    .case-tab.active { color: var(--brand-mid); border-bottom-color: var(--brand-mid); }
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-top: 24px;
    }
    .case-card {
      padding: 26px;
      border-top: 3px solid var(--brand-mid);
    }
    .case-card[data-category="edu"] { border-top-color: var(--accent); }
    .case-card.hidden { display: none; }
    .case-card h3 { font-size: 18px; font-weight: 800; color: var(--ink); margin: 8px 0 10px; }
    .case-card p  { font-size: 14.5px; color: var(--body); line-height: 1.72; }
    .tag {
      display: inline-flex;
      padding: 4px 10px;
      border-radius: 99px;
      font-size: 11.5px;
      font-weight: 700;
      color: var(--brand-mid);
      background: var(--brand-soft);
      border: 1px solid rgba(26,58,171,.12);
    }
    .tech-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 16px;
    }
    .tech-tags span {
      padding: 4px 10px;
      border-radius: 99px;
      font-size: 11.5px;
      font-weight: 700;
      color: var(--body);
      background: var(--paper-soft);
      border: 1px solid var(--line);
    }
    .case-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-top: 18px;
      font-size: 14px;
      font-weight: 700;
      color: var(--brand-mid);
      cursor: pointer;
      transition: gap .15s;
    }
    .case-link:hover { gap: 10px; }
    .case-link::after { content: "→"; }

    /* ── Tab panels ────────────────────────────────────── */
    .tab-panel { display: none; }
    .tab-panel.active { display: block; }

    /* ── Live badge (운영 중) ──────────────────────────── */
    .live-badge {
      display: inline-flex;
      align-items: center;
      gap: 5px;
      padding: 3px 9px;
      margin-bottom: 8px;
      border-radius: 99px;
      font-size: 10.5px;
      font-weight: 800;
      color: var(--accent-dk);
      background: var(--accent-soft);
      border: 1px solid rgba(3,199,90,.22);
    }
    .live-badge::before {
      content: "";
      width: 6px; height: 6px;
      border-radius: 50%;
      background: var(--accent);
      animation: pulse 2.2s infinite;
      flex-shrink: 0;
    }

    /* ── Year sub-tabs ─────────────────────────────────── */
    .year-tabs {
      display: flex;
      gap: 6px;
      margin-top: 20px;
    }
    .year-tab {
      padding: 7px 20px;
      font-size: 13px;
      font-weight: 700;
      color: var(--body);
      background: var(--paper-soft);
      border: 1.5px solid var(--line-mid);
      border-radius: 99px;
      cursor: pointer;
      transition: color .15s, background .15s, border-color .15s;
    }
    .year-tab:hover  { color: var(--brand-mid); background: var(--brand-soft); border-color: rgba(26,58,171,.22); }
    .year-tab.active { color: var(--brand-mid); background: var(--brand-soft); border-color: rgba(26,58,171,.3);  }

    /* ── Year badge on edu cards ───────────────────────── */
    .year-badge {
      display: inline-flex;
      padding: 2px 8px;
      margin-bottom: 8px;
      border-radius: 4px;
      font-size: 11px;
      font-weight: 800;
      letter-spacing: .04em;
      color: var(--brand-mid);
      background: var(--brand-soft);
      border: 1px solid rgba(26,58,171,.14);
    }

    /* ── Edu tag colour override ───────────────────────── */
    .case-card[data-year] .tag {
      color: var(--accent-dk);
      background: var(--accent-soft);
      border-color: rgba(3,199,90,.16);
    }

    /* ── Case logo image area ───────────────────────────── */
    .case-logo {
      display: flex;
      align-items: center;
      justify-content: center;
      margin: -26px -26px 22px;
      height: 84px;
      background: var(--paper-soft);
      border-bottom: 1px solid var(--line);
      border-radius: var(--r) var(--r) 0 0;
      overflow: hidden;
      padding: 0 24px;
    }
    .case-logo img {
      display: block;
      max-width: 200px;
      max-height: 52px;
      object-fit: contain;
      transition: transform .25s ease, filter .25s ease;
    }
    .case-logo img:hover { transform: scale(1.04); filter: brightness(1.06); }

    /* ── Portfolio gallery (MSP) ───────────────────────────── */
    .portfolio-filters {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 28px;
    }
    .pf-filter {
      padding: 8px 18px;
      border-radius: 99px;
      font-size: 13px;
      font-weight: 700;
      color: var(--body);
      background: var(--paper-soft);
      border: 1.5px solid var(--line-mid);
      cursor: pointer;
      transition: color .15s, background .15s, border-color .15s;
    }
    .pf-filter:hover  { color: var(--brand-mid); background: var(--brand-soft); border-color: rgba(26,58,171,.22); }
    .pf-filter.active { color: #fff; background: var(--brand); border-color: var(--brand); }
    .portfolio-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
      margin-top: 20px;
    }
    .pf-card {
      position: relative;
      aspect-ratio: 4/3;
      border-radius: var(--r);
      overflow: hidden;
      cursor: pointer;
    }
    .pf-card.hidden { display: none; }
    .pf-thumb {
      width: 100%;
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: transform .35s ease;
    }
    .pf-card:hover .pf-thumb { transform: scale(1.05); }
    .pf-thumb img {
      max-width: 55%;
      max-height: 45%;
      object-fit: contain;
      filter: brightness(0) invert(1);
      opacity: .85;
    }
    .pf-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(8,16,48,.92) 0%, rgba(8,16,48,.15) 65%, transparent 100%);
      opacity: 0;
      transition: opacity .25s ease;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      padding: 16px 18px;
    }
    .pf-card:hover .pf-overlay { opacity: 1; }
    .pf-overlay-cat {
      font-size: 10.5px;
      font-weight: 700;
      color: var(--accent);
      letter-spacing: .06em;
      text-transform: uppercase;
      margin-bottom: 4px;
      transform: translateY(8px);
      transition: transform .25s ease;
    }
    .pf-overlay-name {
      font-size: 14.5px;
      font-weight: 800;
      color: #fff;
      line-height: 1.35;
      transform: translateY(8px);
      transition: transform .25s ease .04s;
    }
    .pf-card:hover .pf-overlay-cat,
    .pf-card:hover .pf-overlay-name { transform: translateY(0); }
    @media (max-width: 1040px) { .portfolio-grid { grid-template-columns: repeat(3, 1fr); } }
    @media (max-width: 720px)  { .portfolio-grid { grid-template-columns: repeat(2, 1fr); } }

    /* ── News ──────────────────────────────────────────────── */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-top: 48px;
    }
    .news-card {
      background: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--r);
      padding: 24px;
      box-shadow: var(--sh-xs);
      display: flex;
      flex-direction: column;
      gap: 8px;
      transition: box-shadow .2s, transform .2s;
    }
    .news-card:hover { box-shadow: var(--sh); transform: translateY(-3px); }
    .news-cat {
      display: inline-flex;
      padding: 3px 9px;
      border-radius: 4px;
      font-size: 10.5px;
      font-weight: 800;
      letter-spacing: .06em;
      text-transform: uppercase;
      width: fit-content;
    }
    .news-cat.msp { color: var(--brand-mid); background: var(--brand-soft); }
    .news-cat.edu { color: var(--accent-dk); background: var(--accent-soft); }
    .news-cat.notice { color: #b45309; background: #fef3c7; }
    .news-date { font-size: 12px; font-weight: 600; color: var(--muted); }
    .news-card h3 { font-size: 16px; font-weight: 800; color: var(--ink); line-height: 1.4; flex: 1; }
    .news-card p  { font-size: 13.5px; color: var(--body); line-height: 1.7; }
    .news-tag {
      display: inline-flex;
      padding: 3px 9px;
      border-radius: 99px;
      font-size: 11px;
      font-weight: 700;
      color: var(--body);
      background: var(--paper-soft);
      border: 1px solid var(--line);
      width: fit-content;
    }
    @media (max-width: 1040px) { .news-grid { grid-template-columns: repeat(2, 1fr); } }
    @media (max-width: 720px)  { .news-grid { grid-template-columns: 1fr; } }

    /* ── Benefits ──────────────────────────────────────────── */
    .benefits-wrap {
      margin: 40px 0 48px;
      padding: 32px 36px;
      background: var(--brand);
      border-radius: var(--r);
    }
    .benefits-tagline {
      font-size: 18px;
      font-weight: 900;
      color: #fff;
      margin-bottom: 20px;
      letter-spacing: -.01em;
    }
    .benefits-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .benefit-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 9px 16px;
      border-radius: 99px;
      font-size: 13.5px;
      font-weight: 700;
      color: #fff;
      border: 1.5px solid rgba(255,255,255,.25);
      background: rgba(255,255,255,.1);
      transition: background .15s;
    }
    .benefit-tag:nth-child(odd)  { background: rgba(255,255,255,.14); }
    .benefit-tag:nth-child(even) { background: rgba(255,255,255,.08); }
    .benefit-tag:hover { background: rgba(255,255,255,.22); }

    /* ── Careers ────────────────────────────────────────────── */
    .careers {
      background: linear-gradient(180deg, transparent, rgba(238,242,255,.42), transparent);
    }
    .jobs-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      margin-top: 48px;
    }
    .job-card { padding: 26px; }
    .job-card h3 { font-size: 17px; font-weight: 800; color: var(--ink); margin-bottom: 6px; }
    .job-meta { font-size: 13px; font-weight: 700; color: var(--accent-dk); margin-bottom: 16px; }
    .job-card ul { list-style: none; display: grid; gap: 8px; margin-bottom: 20px; }
    .job-card li { display: flex; gap: 8px; font-size: 14px; color: var(--body); }
    .job-card li::before { content: "·"; color: var(--brand-mid); font-weight: 900; flex-shrink: 0; }
    .job-card .btn { width: 100%; }
    .career-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      margin-top: 24px;
      padding: 28px 32px;
      background: var(--brand);
      border-radius: var(--r);
      box-shadow: var(--sh-lg);
    }
    .career-banner strong { display: block; font-size: 20px; font-weight: 800; color: #fff; line-height: 1.35; }
    .career-banner span   { display: block; margin-top: 6px; font-size: 14px; color: rgba(255,255,255,.7); }
    .career-banner .btn-primary {
      background: #fff;
      color: var(--brand);
      white-space: nowrap;
      flex-shrink: 0;
      box-shadow: none;
    }
    .career-banner .btn-primary:hover { background: #f0f4ff; box-shadow: none; }

    /* ── Contact ────────────────────────────────────────────── */
    .contact-layout {
      display: grid;
      grid-template-columns: 1fr 320px;
      gap: 20px;
      margin-top: 48px;
    }
    .contact-form {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      padding: 28px;
      background: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--r);
      box-shadow: var(--sh-sm);
    }
    .field { display: grid; gap: 7px; }
    .field-full { grid-column: 1 / -1; }
    label { font-size: 13px; font-weight: 700; color: var(--ink); }
    input, select, textarea {
      width: 100%;
      border: 1.5px solid var(--line-mid);
      border-radius: var(--r-s);
      color: var(--ink);
      background: var(--paper);
      font: inherit;
      outline: 0;
      transition: border-color .15s, box-shadow .15s;
    }
    input, select { height: 46px; padding: 0 13px; }
    textarea { padding: 12px 13px; min-height: 132px; resize: vertical; }
    input:focus, select:focus, textarea:focus {
      border-color: var(--brand-mid);
      box-shadow: 0 0 0 3px rgba(26,58,171,.08);
    }
    input::placeholder, textarea::placeholder { color: var(--muted); }
    .form-status { display: none; grid-column: 1/-1; font-size: 13.5px; font-weight: 700; color: var(--accent-dk); }
    .form-status.show { display: block; }
    .company-info {
      background: var(--paper);
      border: 1px solid var(--line);
      border-radius: var(--r);
      padding: 28px;
      box-shadow: var(--sh-sm);
    }
    .company-info h3 { font-size: 20px; font-weight: 800; color: var(--ink); margin-bottom: 24px; }
    .info-list { display: grid; gap: 18px; margin-bottom: 24px; }
    .info-item span   { display: block; font-size: 11px; font-weight: 700; color: var(--muted); letter-spacing: .05em; text-transform: uppercase; }
    .info-item strong { display: block; margin-top: 4px; font-size: 14.5px; font-weight: 600; color: var(--ink); line-height: 1.5; }
    .kakao-btn { width: 100%; min-height: 48px; background: #fee500; color: #191600; border-radius: var(--r-s); font-weight: 700; }

    /* ── Footer ─────────────────────────────────────────────── */
    .site-footer {
      background: var(--paper);
      border-top: 1px solid var(--line);
      padding: 48px 24px 32px;
    }
    .footer-top {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 32px;
      padding-bottom: 28px;
    }
    .footer-links { display: flex; flex-wrap: wrap; gap: 2px 4px; }
    .footer-links a {
      padding: 6px 10px;
      font-size: 14px;
      font-weight: 600;
      color: var(--body);
      border-radius: var(--r-s);
      transition: color .15s, background .15s;
    }
    .footer-links a:hover { color: var(--brand-mid); background: var(--brand-soft); }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      padding-top: 24px;
      border-top: 1px solid var(--line);
      font-size: 12.5px;
      color: var(--muted);
    }
    .legal { display: flex; flex-wrap: wrap; gap: 6px 16px; }

    /* ── Modal ──────────────────────────────────────────────── */
    .modal-backdrop {
      position: fixed;
      inset: 0;
      z-index: 200;
      display: none;
      place-items: center;
      padding: 20px;
      background: rgba(13,21,38,.52);
      backdrop-filter: blur(8px);
    }
    .modal-backdrop.open { display: grid; }
    .modal {
      width: min(100%, 600px);
      background: var(--paper);
      border-radius: var(--r);
      box-shadow: 0 24px 80px rgba(0,0,0,.2);
      overflow: hidden;
    }
    .modal-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 20px 24px;
      border-bottom: 1px solid var(--line);
      background: var(--brand-soft);
    }
    .modal-head h3 { font-size: 18px; font-weight: 800; color: var(--ink); }
    .modal-close {
      width: 36px; height: 36px;
      display: grid;
      place-items: center;
      border: 1px solid var(--line);
      border-radius: var(--r-s);
      color: var(--body);
      background: var(--paper);
      font-size: 20px;
      line-height: 1;
      cursor: pointer;
      transition: background .15s;
    }
    .modal-close:hover { background: var(--paper-soft); }
    .modal-body { padding: 24px; font-size: 15px; color: var(--body); line-height: 1.78; }
    .modal-body strong { color: var(--ink); }
    .modal-body ul { margin-top: 12px; padding-left: 20px; }
    .modal-body li { margin-top: 8px; }

    /* ── Fade-in ─────────────────────────────────────────────── */
    .fade-in { opacity: 0; transform: translateY(20px); transition: opacity .65s ease, transform .65s ease; }
    .fade-in.visible { opacity: 1; transform: translateY(0); }

    /* ── Responsive ─────────────────────────────────────────── */
    @media (max-width: 1040px) {
      section { padding: 80px 20px; }
      .hero-layout,
      .why-layout       { grid-template-columns: 1fr; }
      .hero-layout      { gap: 40px; }
      .why-layout       { gap: 48px; }
      .hero-panel       { max-width: 520px; }
      .services-grid,
      .cases-grid,
      .jobs-grid        { grid-template-columns: repeat(2, 1fr); }
      .education-layout { grid-template-columns: 1fr; }
      .education-panel  { position: static; }
      .contact-layout   { grid-template-columns: 1fr; }
      .trust-grid       { grid-template-columns: repeat(2, 1fr); }
      .trust-item:nth-child(odd)  { border-left: 1px solid var(--line); }
      .trust-item:nth-child(even) { border-right: 0; }
      .architecture     { min-height: 400px; }
    }

    @media (max-width: 720px) {
      :root { --nav-h: 64px; }
      .brand-text span { display: none; }
      .menu-toggle     { display: inline-flex; }
      .nav-menu {
        position: fixed;
        top: var(--nav-h);
        left: 12px; right: 12px;
        display: grid;
        gap: 2px;
        padding: 10px;
        background: var(--paper);
        border: 1px solid var(--line);
        border-radius: var(--r);
        box-shadow: var(--sh-lg);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
        transition: opacity .2s, transform .2s, visibility .2s;
      }
      .nav-menu.open  { opacity: 1; visibility: visible; transform: translateY(0); }
      .nav-link,
      .nav-cta        { margin: 0; padding: 12px 14px; border-radius: var(--r-s); }
      .nav-cta        { text-align: center; }
      .hero           { min-height: auto; }
      .hero h1        { font-size: clamp(36px, 10vw, 52px); }
      .hero-actions,
      .education-cta,
      .career-banner,
      .footer-top,
      .footer-bottom  { flex-direction: column; align-items: stretch; }
      .btn            { width: 100%; }
      .services-grid,
      .cases-grid,
      .jobs-grid,
      .trust-grid,
      .contact-form,
      .program-grid   { grid-template-columns: 1fr; }
      .trust-item,
      .trust-item:first-child,
      .trust-item:nth-child(odd) {
        border-left: 0; border-right: 0;
        border-bottom: 1px solid var(--line);
      }
      .hero-badges    { grid-template-columns: 1fr; }
      .architecture   { min-height: 480px; }
      .node           { width: 118px; }
      .node-a         { top: 22px;   left: 14px; }
      .node-b         { top: 100px;  right: 14px; }
      .node-c         { bottom: 98px; left: 14px; }
      .node-d         { bottom: 24px; right: 14px; }
      .line-1, .line-2, .line-3, .line-4 { display: none; }
      .marquee::before,
      .marquee::after { width: 50px; }
    }

    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
      }
    }