*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    :root {
      --navy: #0A1628; --accent: #1D4ED8; --accent2: #3B82F6;
      --text: #0F172A; --muted: #64748B; --border: #E2E8F0;
      --bg: #FFFFFF; --soft: #F8FAFC;
    }
    html { scroll-behavior: smooth; }
    body { font-family: "Inter", sans-serif; color: var(--text); background: var(--bg); -webkit-font-smoothing: antialiased; }
    button { font-family: inherit; }
    img { display: block; max-width: 100%; }

    /* ══ HEADER ══ */
    .header {
      position: fixed;
      inset: 0 0 auto;
      z-index: 200;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(226,232,240,0.8);
    }
    .header__inner {
      max-width: 1200px; margin: 0 auto; padding: 0 48px;
      height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 32px;
    }
    .header__logo { display: flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0; }
    .header__logo-mark {
      width: 36px; height: 36px; background: var(--navy); border-radius: 10px;
      display: flex; align-items: center; justify-content: center;
      color: #fff; font-size: 13px; font-weight: 800; letter-spacing: -0.5px; flex-shrink: 0;
    }
    .header__logo-name { font-size: 15px; font-weight: 700; color: var(--navy); line-height: 1.2; display: block; }
    .header__logo-role { font-size: 11px; font-weight: 500; color: var(--muted); display: block; }
    .header__nav { display: flex; gap: 2px; align-items: center; }
    .header__nav a {
      font-size: 14px; font-weight: 600; color: var(--muted);
      text-decoration: none; padding: 6px 13px; border-radius: 8px;
      transition: color .18s, background .18s;
    }
    .header__nav a:hover, .header__nav a.active { color: var(--navy); background: var(--soft); }
    .header__right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
    .header__phone { font-size: 14px; font-weight: 700; color: var(--navy); text-decoration: none; letter-spacing: -0.3px; transition: color .15s; }
    .header__phone:hover { color: var(--accent); }
    .header__cta {
      font-size: 13.5px; font-weight: 800; color: #fff;
      background: var(--accent); border: none; border-radius: 11px;
      padding: 10px 20px; cursor: pointer; text-decoration: none;
      transition: background .18s, transform .18s;
    }
    .header__cta:hover { background: #1e40af; transform: translateY(-1px); }
    @media (max-width: 900px) {
      .header__nav { display: none; }
      .header__inner { padding: 0 20px; }
    }

    /* ══ PAGE HERO ══ */
    .page-hero {
      background: var(--navy); padding: 72px 0 80px; position: relative; overflow: hidden;
    }
    .page-hero::before {
      content: "";
      position: absolute; inset: 0;
      background-image: radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
      background-size: 28px 28px; pointer-events: none;
    }
    .page-hero::after {
      content: "";
      position: absolute; top: -100px; right: -60px;
      width: 500px; height: 500px; border-radius: 50%;
      background: radial-gradient(circle, rgba(59,130,246,0.12) 0%, transparent 70%);
      pointer-events: none;
    }
    .page-hero__inner {
      max-width: 1200px; margin: 0 auto; padding: 0 48px;
      position: relative; z-index: 1;
    }
    .page-hero__breadcrumb {
      display: flex; align-items: center; gap: 8px;
      font-size: 13px; color: rgba(255,255,255,0.35);
      margin-bottom: 24px;
    }
    .page-hero__breadcrumb a { color: rgba(255,255,255,0.45); text-decoration: none; transition: color .18s; }
    .page-hero__breadcrumb a:hover { color: rgba(255,255,255,0.8); }
    .page-hero__breadcrumb svg { color: rgba(255,255,255,0.2); }
    .page-hero__title {
      font-size: clamp(28px, 4vw, 52px); font-weight: 900;
      color: #fff; letter-spacing: -2px; line-height: 1.05;
      margin-bottom: 18px; max-width: 700px;
    }
    .page-hero__title em { font-style: normal; color: var(--accent2); }
    .page-hero__sub {
      font-size: 16px; color: rgba(255,255,255,0.5); line-height: 1.7;
      max-width: 580px; margin-bottom: 36px;
    }
    .page-hero__stats {
      display: flex; gap: 36px; flex-wrap: wrap;
    }
    .page-hero__stat-num {
      font-size: 28px; font-weight: 900; color: #fff; letter-spacing: -1px; line-height: 1;
    }
    .page-hero__stat-label { font-size: 12px; color: rgba(255,255,255,0.4); margin-top: 4px; font-weight: 500; }
    @media (max-width: 600px) {
      .page-hero { padding: 48px 0 56px; }
      .page-hero__inner { padding: 0 20px; }
    }

    /* ══ CASES SECTION ══ */
    .cases-page { padding: 80px 0 100px; background: var(--bg); }
    .cases-page__inner { max-width: 1200px; margin: 0 auto; padding: 0 48px; }

    /* Filter tabs */
    .cases-filter {
      display: flex; align-items: center; gap: 8px;
      flex-wrap: wrap; margin-bottom: 48px;
    }
    .cases-filter__btn {
      font-size: 13.5px; font-weight: 700; color: var(--muted);
      background: var(--soft); border: 1.5px solid var(--border);
      border-radius: 10px; padding: 9px 18px; cursor: pointer;
      transition: color .18s, background .18s, border-color .18s;
    }
    .cases-filter__btn:hover { color: var(--navy); border-color: #BFDBFE; background: #EFF6FF; }
    .cases-filter__btn.active {
      color: #fff; background: var(--accent); border-color: var(--accent);
    }

    /* Section label */
    .cases-section-label {
      display: flex; align-items: center; gap: 12px;
      font-size: 11.5px; font-weight: 700; letter-spacing: 1px;
      text-transform: uppercase; color: var(--muted);
      margin-bottom: 24px; margin-top: 56px;
    }
    .cases-section-label:first-of-type { margin-top: 0; }
    .cases-section-label::after {
      content: ""; flex: 1; height: 1px; background: var(--border);
    }

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

    /* Case card */
    .ccase {
      border-radius: 20px; overflow: hidden;
      border: 1.5px solid var(--border); background: var(--bg);
      display: flex; flex-direction: column;
      transition: box-shadow .25s, transform .25s, border-color .25s;
    }
    .ccase:hover {
      box-shadow: 0 16px 48px rgba(10,22,40,0.11);
      transform: translateY(-4px); border-color: #BFDBFE;
    }
    .ccase[data-hidden="true"] { display: none; }

    /* Thumb */
    .ccase__thumb {
      position: relative; aspect-ratio: 16/9; overflow: hidden;
      background: linear-gradient(135deg, #0F1E3A 0%, #1A3260 100%);
    }
    .ccase__thumb img {
      width: 100%; height: 100%; object-fit: cover;
      transition: transform .5s cubic-bezier(.22,1,.36,1); filter: brightness(.88);
    }
    .ccase:hover .ccase__thumb img { transform: scale(1.05); filter: brightness(1); }
    .ccase__thumb::after {
      content: "";
      position: absolute; inset: 0;
      background: linear-gradient(to top, rgba(10,22,40,0.7) 0%, rgba(10,22,40,0.1) 55%, transparent 100%);
      pointer-events: none;
    }
    /* Placeholder thumb */
    .ccase__thumb-ph {
      position: absolute; inset: 0;
      display: flex; flex-direction: column;
      align-items: center; justify-content: center; gap: 10px;
      color: rgba(255,255,255,0.18);
    }
    .ccase__thumb-ph p { display: none; }

    /* Category badge */
    .ccase__cat {
      position: absolute; top: 12px; left: 12px; z-index: 2;
      font-size: 10.5px; font-weight: 700; letter-spacing: 0.4px;
      text-transform: uppercase; color: #fff; border-radius: 7px; padding: 4px 10px;
      backdrop-filter: blur(6px); border: 1px solid rgba(255,255,255,0.15);
    }
    .ccase__cat--direct { background: rgba(29,78,216,0.8); }
    .ccase__cat--web    { background: rgba(5,96,63,0.8); }
    .ccase__cat--seo    { background: rgba(124,58,237,0.8); }

    /* Result chip on thumb */
    .ccase__result-chip {
      position: absolute; bottom: 12px; left: 12px; z-index: 2;
      display: inline-flex; align-items: center; gap: 6px;
      background: rgba(255,255,255,0.12); backdrop-filter: blur(8px);
      border: 1px solid rgba(255,255,255,0.18);
      border-radius: 8px; padding: 5px 11px;
      font-size: 12px; font-weight: 700; color: #fff;
    }
    .ccase__result-chip svg { flex-shrink: 0; }

    /* Body */
    .ccase__body { padding: 20px 20px 18px; flex: 1; display: flex; flex-direction: column; }
    .ccase__niche {
      font-size: 11px; font-weight: 700; letter-spacing: 0.5px;
      text-transform: uppercase; color: var(--muted); margin-bottom: 7px;
    }
    .ccase__title {
      font-size: 15px; font-weight: 800; color: var(--navy);
      letter-spacing: -0.3px; line-height: 1.45; margin-bottom: 10px; flex: 1;
    }
    .ccase__desc {
      font-size: 13px; color: var(--muted); line-height: 1.65; margin-bottom: 18px;
    }
    .ccase__actions { display: flex; gap: 8px; flex-wrap: wrap; }
    .ccase__btn {
      font-size: 12.5px; font-weight: 700; border-radius: 9px;
      padding: 8px 15px; cursor: pointer; text-decoration: none;
      transition: background .18s, color .18s, border-color .18s;
      display: inline-flex; align-items: center; gap: 6px; border: none;
    }
    .ccase__btn--primary {
      background: var(--accent); color: #fff;
    }
    .ccase__btn--primary:hover { background: #1e40af; }
    .ccase__btn--ghost {
      background: var(--soft); color: var(--navy);
      border: 1.5px solid var(--border);
    }
    .ccase__btn--ghost:hover { border-color: #BFDBFE; background: #EFF6FF; }

    /* ══ BOTTOM CTA ══ */
    .cases-cta {
      background: var(--navy); padding: 80px 0;
      position: relative; overflow: hidden;
    }
    .cases-cta::before {
      content: "";
      position: absolute; inset: 0;
      background-image: radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
      background-size: 28px 28px; pointer-events: none;
    }
    .cases-cta__inner {
      max-width: 860px; margin: 0 auto; padding: 0 48px;
      text-align: center; position: relative; z-index: 1;
    }
    .cases-cta__title {
      font-size: clamp(26px, 3.5vw, 44px); font-weight: 900;
      color: #fff; letter-spacing: -1.5px; line-height: 1.1; margin-bottom: 16px;
    }
    .cases-cta__title em { font-style: normal; color: var(--accent2); }
    .cases-cta__sub { font-size: 16px; color: rgba(255,255,255,0.5); line-height: 1.7; margin-bottom: 36px; }
    .cases-cta__btn {
      display: inline-flex; align-items: center; gap: 10px;
      background: var(--accent); color: #fff;
      font-size: 15px; font-weight: 800;
      padding: 16px 32px; border-radius: 14px;
      text-decoration: none; border: none; cursor: pointer;
      box-shadow: 0 8px 28px rgba(29,78,216,0.4);
      transition: background .2s, transform .2s;
    }
    .cases-cta__btn:hover { background: #1e40af; transform: translateY(-2px); }