*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    [data-theme="dark"] {
      --bg: #05101b;
      --nav-bg: rgba(15,22,40,0.9);
      --text: #e8edf8;
      --muted: #7a8db0;
      --accent: #5b8ef0;
      --accent2: #00c8b4;
      --border: rgba(255,255,255,0.07);
      --border-h: rgba(91,142,240,0.4);
      --card-bg: rgba(255,255,255,0.04);
      --card-h: rgba(255,255,255,0.08);
      --img-bg: rgba(255,255,255,0.04);
      --tag-bg: rgba(91,142,240,0.12);
      --tag-color: #8ab4f8;
      --aqua: #00c8b4;
      --hero-grad: linear-gradient(160deg,#1a2a52 0%,#141e3a 55%,#0f1628 100%);
      --grid: rgba(255,255,255,0.022);
      --spec-line: rgba(255,255,255,0.06);
      --toggle-bg: rgba(255,255,255,0.07);
    }

    [data-theme="light"] {
      --bg: #f4f7fc;
      --nav-bg: rgba(244,247,252,0.92);
      --text: #0b1526;
      --muted: #4a5e88;
      --accent: #1e4fd8;
      --accent2: #c4960a;
      --border: rgba(26,39,68,0.09);
      --border-h: rgba(30,79,216,0.35);
      --card-bg: rgba(255,255,255,0.7);
      --card-h: rgba(255,255,255,0.95);
      --img-bg: rgba(255,255,255,0.55);
      --tag-bg: rgba(30,79,216,0.09);
      --tag-color: #1e4fd8;
      --aqua: #00a896;
      --hero-grad: linear-gradient(160deg,#dce6f8 0%,#e8eef8 55%,#f4f7fc 100%);
      --grid: rgba(26,39,68,0.035);
      --spec-line: rgba(26,39,68,0.07);
      --toggle-bg: rgba(26,39,68,0.07);
    }

    html { scroll-behavior: smooth; }

    body {
      font-family: 'Sora', sans-serif;
      background: var(--bg); color: var(--text);
      transition: background .3s, color .3s;
      overflow-x: hidden;
    }

    /* ── NAV ── */
    nav {
      position: fixed; top: 0; left: 0; right: 0; z-index: 100;
      background: var(--nav-bg); backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border);
      height: 64px; padding: 0 48px;
      display: flex; align-items: center; justify-content: space-between;
    }

    .nav-logo {
      font-size: 1.05rem; font-weight: 800; letter-spacing: -0.03em;
      color: var(--text); text-decoration: none; line-height: 1.1;
    }
    .nav-logo span { display: block; }

    .nav-links { display: flex; gap: 2rem; }
    .nav-links a {
      font-size: 0.77rem; font-weight: 400; letter-spacing: 0.04em;
      text-transform: uppercase; color: var(--muted); text-decoration: none;
      transition: color .2s;
    }
    .nav-links a:hover, .nav-links a.active { color: var(--text); }

    .nav-r { display: flex; align-items: center; gap: .75rem; }

    .theme-btn {
      width: 38px; height: 38px; border-radius: 8px;
      background: var(--toggle-bg); border: 1px solid var(--border);
      cursor: pointer; display: flex; align-items: center; justify-content: center;
      color: var(--muted); transition: border-color .2s, color .2s;
    }
    .theme-btn:hover { border-color: var(--border-h); color: var(--text); }
    .theme-btn svg { width: 16px; height: 16px; fill: currentColor; }
    .i-sun { display: none; }
    [data-theme="light"] .i-moon { display: none; }
    [data-theme="light"] .i-sun { display: block; }

    .hamburger {
      display: none; flex-direction: column; gap: 5px;
      cursor: pointer; background: none; border: none; padding: 4px;
    }
    .hamburger span { width: 22px; height: 1.5px; background: var(--text); display: block; }

    .mobile-menu {
      display: none; position: fixed;
      top: 64px; left: 0; right: 0; bottom: 0;
      background: var(--nav-bg); backdrop-filter: blur(20px);
      z-index: 99; flex-direction: column;
      padding: 2rem 32px; gap: 1.5rem;
      border-top: 1px solid var(--border);
    }
    .mobile-menu.open { display: flex; }
    .mobile-menu a {
      font-size: 1.05rem; font-weight: 600;
      color: var(--text); text-decoration: none;
      padding: .5rem 0; border-bottom: 1px solid var(--border);
    }

    /* ── WRAPPER ── */
    .page {
      max-width: 1100px; margin: 0 auto;
      padding: 88px 48px 80px;
    }

    /* ── BREADCRUMB ── */
    .crumb {
      display: flex; align-items: center; gap: .5rem;
      font-size: 0.71rem; color: var(--muted);
      margin-bottom: 36px;
    }
    .crumb a { color: var(--muted); text-decoration: none; transition: color .2s; }
    .crumb a:hover { color: var(--accent); }
    .crumb span { opacity: .4; }
    .crumb strong { color: var(--text); font-weight: 600; }

    /* ══════════════════════════════
       MAIN PRODUCT SPLIT
    ══════════════════════════════ */
    .prod-split {
      display: grid; grid-template-columns: 1fr 1fr;
      gap: 4rem; align-items: start;
      padding-bottom: 56px;
      border-bottom: 1px solid var(--border);
    }

    /* IMAGE SIDE */
    .ps-img-wrap { position: relative; }

    .ps-img-main {
      width: 100%; aspect-ratio: 1;
      background: var(--hero-grad);
      border: 1px solid var(--border);
      border-radius: 16px; overflow: hidden;
      display: flex; align-items: center; justify-content: center;
      position: relative;
    }

    /* grid overlay on image bg */
    .ps-img-main::before {
      content: '';
      position: absolute; inset: 0;
      background-image:
        linear-gradient(var(--grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid) 1px, transparent 1px);
      background-size: 48px 48px;
      pointer-events: none; z-index: 0;
    }

    .ps-img-main img {
      width: 85%; height: 85%; object-fit: contain;
      position: relative; z-index: 1;
      transition: transform 5s ease;
    }

    .ps-img-wrap:hover .ps-img-main img { transform: scale(1.04); }

    .ps-img-ph {
      display: flex; flex-direction: column;
      align-items: center; justify-content: center;
      gap: .75rem; z-index: 1; width: 100%; height: 100%;
    }

    .ps-img-ph svg {
      width: 48px; height: 48px;
      stroke: var(--border-h); fill: none; stroke-width: 1; opacity: .4;
    }

    .ps-img-ph span {
      font-size: .67rem; letter-spacing: .1em;
      text-transform: uppercase; color: var(--muted); opacity: .4;
    }

    /* thumbnail row */
    .ps-thumbs {
      display: grid; grid-template-columns: repeat(3, 1fr);
      gap: 8px; margin-top: 10px;
    }

    .ps-thumb {
      aspect-ratio: 1;
      background: var(--card-bg);
      border: 1px solid var(--border); border-radius: 10px;
      display: flex; align-items: center; justify-content: center;
      cursor: pointer; overflow: hidden;
      transition: border-color .2s;
    }

    .ps-thumb:hover, .ps-thumb.active { border-color: var(--accent); }

    .ps-thumb img { width: 100%; height: 100%; object-fit: contain; padding: 12px; }

    .ps-thumb-ph {
      width: 100%; height: 100%;
      display: flex; align-items: center; justify-content: center;
    }

    .ps-thumb-ph svg {
      width: 22px; height: 22px;
      stroke: var(--border-h); fill: none; stroke-width: 1; opacity: .35;
    }

    /* INFO SIDE */
    .ps-info {}

    .ps-label {
      font-size: .68rem; font-weight: 600;
      letter-spacing: .13em; text-transform: uppercase;
      color: var(--accent); margin-bottom: .7rem;
    }

    .ps-info h1 {
      font-size: clamp(1.7rem, 3vw, 2.5rem);
      font-weight: 800; letter-spacing: -.03em;
      color: var(--text); line-height: 1.08;
      margin-bottom: 1rem;
    }

    .ps-info h1 em { font-style: normal; color: var(--accent2); }

    .ps-desc {
      font-size: .86rem; font-weight: 300;
      color: var(--muted); line-height: 1.78;
      margin-bottom: 1.5rem;
    }

    /* tags */
    .ps-tags {
      display: flex; gap: .45rem; flex-wrap: wrap; margin-bottom: 1.75rem;
    }

    .ps-tag {
      font-size: .62rem; font-weight: 600;
      letter-spacing: .08em; text-transform: uppercase;
      color: var(--tag-color); background: var(--tag-bg);
      border-radius: 5px; padding: 4px 11px;
    }

    .ps-tag.green { color: var(--aqua); background: rgba(0,200,180,.12); }
    .ps-tag.yellow { color: var(--accent2); background: rgba(245,230,66,.1); }

    /* quick specs mini grid */
    .ps-quick {
      display: grid; grid-template-columns: 1fr 1fr;
      gap: 1.5px; border: 1px solid var(--border);
      border-radius: 11px; overflow: hidden; margin-bottom: 1.75rem;
    }

    .ps-qs {
      background: var(--card-bg); padding: 14px 16px;
      border-right: 1px solid var(--border);
    }

    .ps-qs:nth-child(even) { border-right: none; }
    .ps-qs:nth-child(n+3) { border-top: 1px solid var(--border); }

    .ps-qs-k {
      font-size: .67rem; font-weight: 300; color: var(--muted);
      margin-bottom: 3px; letter-spacing: .02em;
    }

    .ps-qs-v {
      font-size: .82rem; font-weight: 700; color: var(--text);
    }

    /* buttons */
    .ps-btns {
      display: flex; gap: .8rem; flex-wrap: wrap;
    }

    .btn-p {
      background: var(--accent); color: #fff;
      border: none; border-radius: 8px; padding: 13px 28px;
      font-size: .85rem; font-family: 'Sora', sans-serif; font-weight: 600;
      cursor: pointer; text-decoration: none; display: inline-block;
      box-shadow: 0 4px 16px rgba(91,142,240,.28);
      transition: background .2s, transform .2s, box-shadow .2s;
    }
    .btn-p:hover { background: #7ca8f8; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(91,142,240,.38); }
    [data-theme="light"] .btn-p { background: #1e4fd8; }
    [data-theme="light"] .btn-p:hover { background: #2a5dd4; }

    .btn-g {
      background: var(--card-bg); color: var(--text);
      border: 1px solid var(--border); border-radius: 8px;
      padding: 12px 22px; font-size: .85rem;
      font-family: 'Sora', sans-serif; font-weight: 500;
      cursor: pointer; text-decoration: none;
      display: inline-flex; align-items: center; gap: .4rem;
      transition: border-color .2s;
    }
    .btn-g:hover { border-color: var(--border-h); }

    /* ══════════════════════════════
       SPECS TABLE
    ══════════════════════════════ */
    .specs-sec {
      padding: 48px 0;
      border-bottom: 1px solid var(--border);
    }

    .sec-lbl {
      font-size: .68rem; font-weight: 600;
      letter-spacing: .13em; text-transform: uppercase;
      color: var(--accent); margin-bottom: .5rem;
    }

    .sec-h {
      font-size: clamp(1.2rem, 2vw, 1.6rem);
      font-weight: 800; letter-spacing: -.02em;
      color: var(--text); margin-bottom: 1.5rem;
    }

    .spec-table {
      border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
    }

    .spec-row {
      display: grid; grid-template-columns: 220px 1fr;
      border-bottom: 1px solid var(--spec-line);
      transition: background .2s;
    }

    .spec-row:last-child { border-bottom: none; }
    .spec-row:hover { background: var(--card-bg); }

    .spec-k {
      padding: 13px 18px; font-size: .77rem;
      font-weight: 600; color: var(--muted);
      border-right: 1px solid var(--spec-line);
    }

    .spec-v {
      padding: 13px 18px; font-size: .77rem;
      font-weight: 400; color: var(--text);
    }
 .docs-specs {
      display: flex; 
      flex-direction: row; 
      align-items: center;
      align-self: center;
      justify-content: space-between;
      background: #ffffff0e;
      border: 1px solid var(--border);
      border-radius: 10px;
      background-origin: padding-box;
      backdrop-filter: blur(10px);
      padding-top: 10px;
      margin-top: 10px;
      padding-bottom: 10px;
      padding: 10px;
    }
    .docs-specs h2 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 4px;
    }
    .docs-specs p {
      font-size: 0.75rem;
      font-weight: 300;
      color: var(--muted);
      line-height: 1.5;
    }
    .docs-specs a {
      font-size: 0.75rem;
      font-weight: 500;
      
      text-decoration: none;
      margin-top: 8px;
      display: inline-block;
    }
    .btn-primary {
      background: var(--accent); color: #fff;
      border: none; border-radius: 8px; padding: 13px 28px;
      font-size: 0.85rem; font-family: 'Sora', sans-serif; font-weight: 600;
      cursor: pointer; text-decoration: none; display: inline-block;
      transition: background .2s, transform .2s, box-shadow .2s;
      box-shadow: 0 4px 16px rgba(91,142,240,0.28);
    }
    /* ══════════════════════════════
       VARIANTS — small cards
    ══════════════════════════════ */
    .variants-sec {
      padding: 48px 0;
      border-bottom: 1px solid var(--border);
    }

    .var-grid {
      display: grid; grid-template-columns: repeat(3, 1fr);
      gap: 14px; margin-top: 1.5rem;
    }

    .var-card {
      background: var(--card-bg); border: 1px solid var(--border);
      border-radius: 12px; padding: 20px;
      display: flex; flex-direction: column; gap: .5rem;
      transition: border-color .25s, background .25s, transform .25s;
      cursor: pointer;
    }

    .var-card:hover {
      border-color: var(--border-h);
      background: var(--card-h);
      transform: translateY(-3px);
    }

    .var-icon {
      width: 36px; height: 36px; border-radius: 8px;
      background: var(--tag-bg);
      display: flex; align-items: center; justify-content: center;
      margin-bottom: 6px;
    }

    .var-icon svg {
      width: 16px; height: 16px;
      stroke: var(--accent); fill: none;
      stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
    }

    .var-name { font-size: .88rem; font-weight: 700; color: var(--text); }
    .var-desc { font-size: .74rem; font-weight: 300; color: var(--muted); line-height: 1.55; }

    .var-tag {
      font-size: .6rem; font-weight: 600;
      letter-spacing: .08em; text-transform: uppercase;
      color: var(--tag-color); background: var(--tag-bg);
      border-radius: 4px; padding: 3px 9px;
      width: fit-content; margin-top: 4px;
    }

    /* ══════════════════════════════
       CTA
    ══════════════════════════════ */
    .cta {
      margin-top: 48px;
      background: var(--hero-grad);
      border: 1px solid var(--border); border-radius: 14px;
      padding: 40px 44px;
      display: flex; align-items: center;
      justify-content: space-between; gap: 2rem;
      position: relative; overflow: hidden;
    }

    .cta::after {
      content: '';
      position: absolute; right: -60px; top: -60px;
      width: 240px; height: 240px; border-radius: 50%;
      background: rgba(91,142,240,.08); filter: blur(56px);
      pointer-events: none;
    }

    .cta h3 {
      font-size: clamp(1.1rem, 2vw, 1.5rem);
      font-weight: 800; letter-spacing: -.02em;
      color: var(--text); margin-bottom: .4rem;
    }

    .cta h3 em { font-style: normal; color: var(--accent2); }

    .cta p {
      font-size: .82rem; font-weight: 300;
      color: var(--muted); max-width: 380px;
    }

    .cta-btns { display: flex; gap: .75rem; flex-shrink: 0; flex-wrap: wrap; }

    /* ── RESPONSIVE ── */
    @media (max-width: 860px) {
      nav { padding: 0 24px; }
      .nav-links { display: none; }
      .hamburger { display: flex; }
      .page { padding: 80px 24px 64px; }
      .prod-split { grid-template-columns: 1fr; gap: 2.5rem; }
      .var-grid { grid-template-columns: 1fr 1fr; }
      .cta { flex-direction: column; align-items: flex-start; }
      .spec-row { grid-template-columns: 160px 1fr; }
    }

    @media (max-width: 480px) {
      .page { padding: 76px 20px 56px; }
      .var-grid { grid-template-columns: 1fr; }
      .ps-btns { flex-direction: column; align-items: flex-start; }
      .spec-row { grid-template-columns: 1fr; }
      .spec-k { border-right: none; border-bottom: 1px solid var(--spec-line); padding-bottom: 4px; }
      .cta { padding: 28px 24px; }
    }

    @keyframes fadeUp {
      from { opacity:0; transform:translateY(18px); }
      to { opacity:1; transform:translateY(0); }
    }

    .ps-label { animation: fadeUp .5s ease .1s both; }
    .ps-info h1 { animation: fadeUp .6s ease .18s both; }
    .ps-desc { animation: fadeUp .55s ease .26s both; }
    .ps-tags { animation: fadeUp .5s ease .32s both; }
    .ps-quick { animation: fadeUp .5s ease .38s both; }
    .ps-btns { animation: fadeUp .5s ease .44s both; }
    .ps-img-wrap { animation: fadeUp .65s ease .15s both; }