:root {
      color-scheme: dark;
      --bg: #020712;
      --bg-2: #061425;
      --ink: #f6fbff;
      --muted: #aac0d7;
      --soft: #7890aa;
      --dim: #52677f;
      --line: rgba(115, 205, 255, .18);
      --line-strong: rgba(115, 205, 255, .34);
      --panel: rgba(4, 15, 32, .76);
      --panel-strong: rgba(6, 22, 45, .9);
      --blue: #248dff;
      --blue-2: #51b7ff;
      --cyan: #74e6ff;
      --ice: #ecfbff;
      --green: #8df2d0;
      --warn: #d9e9f8;
      --shadow: 0 30px 110px rgba(0, 0, 0, .52);
      --radius-xl: 34px;
      --radius-lg: 24px;
      --radius-md: 16px;
      --max: 1180px;
      --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    }

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

    html {
      min-width: 320px;
      scroll-behavior: smooth;
      text-size-adjust: 100%;
      background: var(--bg);
    }

    body {
      min-width: 320px;
      margin: 0;
      overflow-x: hidden;
      color: var(--ink);
      font-family: var(--font);
      background:
        linear-gradient(180deg, rgba(2, 7, 18, .70), rgba(2, 7, 18, .94) 44%, rgba(1, 4, 10, .985) 100%),
        radial-gradient(circle at 80% 8%, rgba(36, 141, 255, .18), transparent 31rem),
        radial-gradient(circle at 9% 40%, rgba(116, 230, 255, .09), transparent 28rem),
        url("/background.png") center top / cover fixed no-repeat,
        #020712;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      z-index: -2;
      pointer-events: none;
      background:
        linear-gradient(90deg, rgba(1, 4, 10, .96), rgba(2, 10, 22, .38) 48%, rgba(1, 4, 10, .94)),
        radial-gradient(circle at 50% -12%, rgba(116, 230, 255, .12), transparent 32rem),
        radial-gradient(circle at 50% 112%, rgba(36, 141, 255, .14), transparent 34rem);
    }

    body::after {
      content: "";
      position: fixed;
      inset: 0;
      z-index: -1;
      pointer-events: none;
      opacity: .25;
      background-image:
        linear-gradient(rgba(116, 230, 255, .055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(116, 230, 255, .055) 1px, transparent 1px);
      background-size: 72px 72px;
      mask-image: linear-gradient(180deg, transparent, black 12%, black 80%, transparent);
    }

    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }
    p, h1, h2, h3 { margin-top: 0; }
    strong { font-weight: 850; }
    ::selection { color: #031024; background: var(--cyan); }

    .skip-link {
      position: absolute;
      left: 1rem;
      top: -6rem;
      z-index: 100;
      padding: .8rem 1rem;
      border-radius: 999px;
      color: #031024;
      background: var(--ice);
      font-weight: 900;
    }

    .skip-link:focus { top: 1rem; }

    .container {
      width: min(var(--max), calc(100% - 40px));
      margin-inline: auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      border-bottom: 1px solid var(--line);
      background: rgba(2, 7, 18, .78);
      backdrop-filter: blur(18px);
      box-shadow: 0 18px 56px rgba(0, 0, 0, .28);
    }

    .nav {
      min-height: 78px;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
      align-items: center;
      gap: 1rem;
    }

    .brand,
    .footer-brand {
      min-width: 0;
      display: inline-flex;
      align-items: center;
      gap: .86rem;
    }

    .brand { justify-self: start; }

    .brand img,
    .footer-brand img {
      width: 50px;
      height: 50px;
      flex: 0 0 auto;
      object-fit: contain;
      filter: drop-shadow(0 0 18px rgba(36, 141, 255, .38));
    }

    .brand-copy,
    .footer-brand-copy {
      min-width: 0;
      display: grid;
      line-height: 1;
    }

    .brand-copy strong,
    .footer-brand-copy strong {
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
      letter-spacing: .08em;
      text-transform: uppercase;
    }

    .brand-copy strong { font-size: clamp(1rem, 1.45vw, 1.18rem); }
    .footer-brand-copy strong { font-size: 1rem; }

    .brand-copy span,
    .footer-brand-copy span {
      margin-top: .36rem;
      color: var(--muted);
      font-size: .66rem;
      letter-spacing: .28em;
      text-transform: uppercase;
      white-space: nowrap;
    }

    .nav-links,
    .nav-actions {
      display: inline-flex;
      align-items: center;
      gap: .16rem;
    }

    .nav-links {
      justify-self: center;
      justify-content: center;
      color: #cbdcef;
      font-size: .92rem;
    }

    .nav-actions {
      justify-self: end;
      justify-content: flex-end;
      gap: .58rem;
      min-width: 0;
    }

    .nav-links a,
    .nav-actions a,
    .btn {
      min-height: 42px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 1px solid transparent;
      border-radius: 999px;
      transition: transform .18s ease, border-color .18s ease, background .18s ease, box-shadow .18s ease;
      white-space: nowrap;
    }

    .nav-links a { padding: .64rem .86rem; }
    .nav-actions a { padding: .66rem .94rem; }

    .nav-links a:hover,
    .nav-links a:focus-visible,
    .ghost:hover,
    .ghost:focus-visible {
      outline: 0;
      transform: translateY(-1px);
      border-color: rgba(116, 230, 255, .26);
      background: rgba(116, 230, 255, .08);
    }

    .primary,
    .btn.primary {
      color: #021020;
      font-weight: 920;
      background: linear-gradient(135deg, var(--ice), var(--blue-2) 52%, var(--blue));
      border-color: rgba(236, 251, 255, .65);
      box-shadow: 0 14px 34px rgba(36, 141, 255, .28), inset 0 1px 0 rgba(255, 255, 255, .55);
    }

    .primary:hover,
    .primary:focus-visible,
    .btn.primary:hover,
    .btn.primary:focus-visible {
      outline: 0;
      transform: translateY(-2px);
      box-shadow: 0 19px 44px rgba(36, 141, 255, .36), inset 0 1px 0 rgba(255, 255, 255, .55);
    }

    .btn {
      padding: .9rem 1.15rem;
      font-weight: 850;
      letter-spacing: .01em;
    }

    .btn.secondary {
      color: #d9efff;
      background: rgba(8, 29, 58, .62);
      border-color: rgba(116, 230, 255, .24);
    }

    .btn.secondary:hover,
    .btn.secondary:focus-visible {
      outline: 0;
      transform: translateY(-2px);
      border-color: rgba(116, 230, 255, .46);
      background: rgba(20, 67, 119, .64);
      box-shadow: 0 17px 42px rgba(0, 0, 0, .28);
    }

    main { position: relative; }

    .section { padding: clamp(4.2rem, 7vw, 7.2rem) 0; }

    .hero {
      min-height: calc(100svh - 78px);
      display: grid;
      align-items: center;
      padding: clamp(4rem, 8vw, 8rem) 0 clamp(4rem, 8vw, 7rem);
      text-align: center;
    }

    .hero-inner {
      max-width: 980px;
      display: grid;
      justify-items: center;
      margin-inline: auto;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, .94fr) minmax(470px, 1.06fr);
      gap: clamp(2rem, 4vw, 4.5rem);
      align-items: center;
    }

    .eyebrow,
    .section-kicker,
    .panel-label {
      letter-spacing: .15em;
      text-transform: uppercase;
      font-weight: 900;
    }

    .eyebrow {
      width: fit-content;
      display: inline-flex;
      align-items: center;
      gap: .55rem;
      margin-bottom: 1.2rem;
      padding: .55rem .78rem;
      border: 1px solid rgba(116, 230, 255, .24);
      border-radius: 999px;
      color: #d2efff;
      background: rgba(6, 22, 47, .62);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08);
      font-size: .78rem;
    }

    .eyebrow::before {
      content: "";
      width: .48rem;
      height: .48rem;
      border-radius: 999px;
      background: var(--green);
      box-shadow: 0 0 20px rgba(141, 242, 208, .8);
    }

    h1 {
      max-width: 10.2ch;
      margin-bottom: 1.15rem;
      font-size: clamp(3rem, 7.2vw, 6.35rem);
      line-height: .88;
      letter-spacing: -.07em;
      text-transform: uppercase;
      text-wrap: balance;
    }

    .gradient-word {
      display: inline-block;
      color: transparent;
      background: linear-gradient(135deg, #f7fbff 4%, #7feaff 38%, #248dff 82%);
      -webkit-background-clip: text;
      background-clip: text;
    }

    .hero-copy {
      max-width: 720px;
      margin-bottom: 1.55rem;
      color: #c8d9ea;
      font-size: clamp(1.04rem, 1.4vw, 1.18rem);
      line-height: 1.7;
    }

    .hero-inner h1 {
      max-width: 13.8ch;
      margin-inline: auto;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: .82rem;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.2rem;
    }

    .micro-proof {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: .65rem;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .hero-stats {
      width: min(100%, 860px);
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: .82rem;
      margin-top: 1.25rem;
    }

    .stat-card {
      min-width: 0;
      padding: 1rem;
      border: 1px solid rgba(116, 230, 255, .15);
      border-radius: 20px;
      background: linear-gradient(180deg, rgba(8, 29, 58, .54), rgba(2, 9, 21, .62));
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06), 0 18px 46px rgba(0, 0, 0, .22);
    }

    .stat-card strong {
      display: block;
      margin-bottom: .28rem;
      color: var(--ice);
      font-size: clamp(1.1rem, 2.1vw, 1.55rem);
      letter-spacing: -.04em;
      line-height: 1;
    }

    .stat-card span {
      color: #9eb3ca;
      font-size: .82rem;
      line-height: 1.45;
    }

    .micro-proof li {
      display: inline-flex;
      align-items: center;
      gap: .5rem;
      padding: .56rem .76rem;
      border: 1px solid rgba(116, 230, 255, .14);
      border-radius: 999px;
      background: rgba(5, 17, 35, .48);
      color: #d5e9f9;
      font-size: .8rem;
      font-weight: 760;
    }

    .micro-proof li::before {
      content: "";
      width: .38rem;
      height: .38rem;
      border-radius: 50%;
      background: var(--blue-2);
      box-shadow: 0 0 16px rgba(81, 183, 255, .75);
    }

    .visual-wrap {
      position: relative;
      min-width: 0;
      display: flex;
      align-items: center;
    }

    .explain-grid > .visual-wrap {
      width: 100%;
      align-self: stretch;
    }

    .visual-wrap::before {
      content: "";
      position: absolute;
      inset: -12% -10%;
      z-index: -1;
      border-radius: 42%;
      background:
        radial-gradient(circle at 50% 35%, rgba(116, 230, 255, .20), transparent 20rem),
        radial-gradient(circle at 60% 62%, rgba(36, 141, 255, .18), transparent 23rem);
      filter: blur(6px);
    }

    .chat-shell {
      overflow: hidden;
      width: 100%;
      max-width: min(100%, 620px);
      margin-left: auto;
      border: 1px solid rgba(116, 230, 255, .28);
      border-radius: var(--radius-xl);
      background:
        linear-gradient(180deg, rgba(9, 30, 61, .93), rgba(3, 12, 27, .98)),
        rgba(6, 22, 47, .9);
      box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, .08);
      contain: layout paint;
    }

    .chat-topbar {
      min-width: 0;
      display: grid;
      grid-template-columns: auto minmax(0, 1fr) auto;
      align-items: center;
      gap: .8rem;
      padding: .88rem 1rem;
      border-bottom: 1px solid rgba(116, 230, 255, .14);
      background: rgba(3, 12, 27, .84);
    }

    .window-controls {
      display: inline-flex;
      gap: .38rem;
      align-items: center;
    }

    .window-controls i {
      width: .68rem;
      height: .68rem;
      display: block;
      border-radius: 999px;
      background: rgba(116, 230, 255, .38);
      box-shadow: 0 0 14px rgba(116, 230, 255, .18);
    }

    .chat-title {
      min-width: 0;
      overflow: hidden;
      color: #dff7ff;
      font-size: .86rem;
      font-weight: 850;
      letter-spacing: .05em;
      text-align: center;
      text-overflow: ellipsis;
      text-transform: uppercase;
      white-space: nowrap;
    }

    .model-pill {
      flex: 0 0 auto;
      padding: .42rem .58rem;
      border: 1px solid rgba(116, 230, 255, .2);
      border-radius: 999px;
      color: #bfe9ff;
      background: rgba(116, 230, 255, .06);
      font-size: .72rem;
      font-weight: 820;
      white-space: nowrap;
    }

    .chat-frame {
      display: grid;
      grid-template-columns: minmax(92px, 112px) minmax(0, 1fr);
      min-height: clamp(410px, 42vw, 480px);
    }

    .chat-sidebar {
      min-width: 0;
      padding: .76rem;
      border-right: 1px solid rgba(116, 230, 255, .12);
      background: rgba(2, 9, 21, .58);
    }

    .new-chat {
      width: 100%;
      min-height: 38px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: .58rem .62rem;
      border: 1px solid rgba(116, 230, 255, .18);
      border-radius: 14px;
      color: #e8f9ff;
      background: rgba(116, 230, 255, .07);
      font-size: .7rem;
      font-weight: 850;
    }

    .chat-list {
      display: grid;
      gap: .48rem;
      margin-top: .82rem;
    }

    .chat-list span {
      min-width: 0;
      overflow: hidden;
      display: block;
      padding: .54rem .56rem;
      border-radius: 12px;
      color: #94a9c0;
      font-size: .71rem;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .chat-list .active {
      color: #e9f9ff;
      border: 1px solid rgba(116, 230, 255, .18);
      background: rgba(36, 141, 255, .18);
    }

    .chat-main {
      min-width: 0;
      display: grid;
      grid-template-rows: minmax(0, 1fr) auto;
      background:
        radial-gradient(circle at 22% 0%, rgba(36, 141, 255, .13), transparent 18rem),
        rgba(3, 13, 29, .72);
    }

    .messages {
      min-width: 0;
      display: grid;
      align-content: start;
      gap: .72rem;
      padding: clamp(.82rem, 1.55vw, 1.08rem);
    }

    .msg {
      min-width: 0;
      display: grid;
      gap: .48rem;
      max-width: min(88%, 360px);
    }

    .msg.user { justify-self: end; }
    .msg.assistant { justify-self: start; max-width: min(94%, 395px); }

    .sender {
      color: #8fa6bf;
      font-size: .72rem;
      font-weight: 850;
      letter-spacing: .08em;
      text-transform: uppercase;
    }

    .msg.user .sender { text-align: right; }

    .bubble {
      min-width: 0;
      max-width: 100%;
      overflow: hidden;
      overflow-wrap: anywhere;
      word-break: normal;
      padding: .72rem .8rem;
      border: 1px solid rgba(116, 230, 255, .14);
      border-radius: 20px;
      color: #e6f3ff;
      font-size: .82rem;
      line-height: 1.46;
      box-shadow: 0 16px 36px rgba(0, 0, 0, .18);
    }

    .msg.assistant .bubble {
      background: rgba(8, 28, 56, .78);
      border-top-left-radius: 6px;
    }

    .msg.user .bubble {
      border-color: rgba(116, 230, 255, .25);
      border-top-right-radius: 6px;
      background: linear-gradient(135deg, rgba(36, 141, 255, .35), rgba(116, 230, 255, .13));
    }

    .mini-output {
      display: grid;
      gap: .5rem;
      margin-top: .58rem;
    }

    .output-row {
      min-width: 0;
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      align-items: center;
      gap: .7rem;
      padding: .48rem .54rem;
      border: 1px solid rgba(116, 230, 255, .13);
      border-radius: 14px;
      color: #d7ecff;
      background: rgba(1, 8, 18, .38);
      font-size: .74rem;
    }

    .output-row span {
      min-width: 0;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .score {
      color: var(--green);
      font-weight: 900;
      white-space: nowrap;
    }

    .composer {
      padding: .82rem;
      border-top: 1px solid rgba(116, 230, 255, .12);
      background: rgba(2, 9, 21, .7);
    }

    .composer-box {
      min-width: 0;
      min-height: 46px;
      display: flex;
      align-items: center;
      gap: .8rem;
      padding: .62rem .7rem .62rem 1rem;
      border: 1px solid rgba(116, 230, 255, .22);
      border-radius: 18px;
      color: #98adc5;
      background: rgba(1, 7, 16, .75);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, .06);
    }

    .composer-text {
      min-width: 0;
      overflow: hidden;
      flex: 1;
      text-overflow: ellipsis;
      white-space: nowrap;
      font-size: .86rem;
    }

    .send-button {
      width: 34px;
      height: 34px;
      display: inline-grid;
      place-items: center;
      flex: 0 0 auto;
      border-radius: 14px;
      color: #031024;
      background: linear-gradient(135deg, var(--ice), var(--blue-2));
      font-weight: 950;
      box-shadow: 0 12px 22px rgba(36, 141, 255, .24);
    }

    .section-head {
      max-width: 800px;
      display: grid;
      gap: .8rem;
      margin: 0 auto clamp(2rem, 4vw, 3.2rem);
      text-align: center;
    }

    .section-kicker {
      margin: 0;
      color: var(--cyan);
      font-size: .78rem;
    }

    h2 {
      margin-bottom: 0;
      font-size: clamp(2rem, 4.8vw, 4rem);
      line-height: .98;
      letter-spacing: -.05em;
      text-transform: uppercase;
      text-wrap: balance;
    }

    .section-lead {
      margin-bottom: 0;
      color: #aec2d7;
      font-size: clamp(1rem, 1.28vw, 1.12rem);
      line-height: 1.7;
    }

    .explain-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
      gap: 1rem;
    }

    .panel,
    .explain-panel,
    .compare-panel,
    .faq-card,
    .final-cta {
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background:
        linear-gradient(180deg, rgba(8, 26, 52, .76), rgba(3, 11, 24, .86)),
        var(--panel);
      box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, .06);
    }

    .explain-panel {
      min-width: 0;
      padding: clamp(1.3rem, 2.5vw, 2rem);
    }

    .explain-panel.highlight {
      position: relative;
      overflow: hidden;
      border-color: rgba(116, 230, 255, .26);
      background:
        radial-gradient(circle at 14% 0%, rgba(116, 230, 255, .14), transparent 18rem),
        linear-gradient(180deg, rgba(9, 31, 62, .82), rgba(3, 11, 24, .9));
    }

    .panel-label {
      display: inline-flex;
      margin-bottom: 1rem;
      color: var(--cyan);
      font-size: .72rem;
    }

    h3 {
      margin-bottom: .75rem;
      color: var(--ice);
      font-size: clamp(1.45rem, 2.4vw, 2.15rem);
      line-height: 1.05;
      letter-spacing: -.035em;
      text-wrap: balance;
    }

    .explain-panel p {
      margin-bottom: 1rem;
      color: #b5c8dc;
      line-height: 1.72;
    }

    .capability-list {
      display: grid;
      gap: .72rem;
      margin: 1.15rem 0 0;
      padding: 0;
      list-style: none;
    }

    .capability-list li {
      position: relative;
      padding-left: 1.6rem;
      color: #d8e8f7;
      line-height: 1.55;
    }

    .capability-list li::before {
      content: "✓";
      position: absolute;
      left: 0;
      top: 0;
      color: var(--green);
      font-weight: 950;
    }

    .workflow-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: .8rem;
      margin-top: 1.1rem;
    }

    .workflow-card {
      min-width: 0;
      padding: 1rem;
      border: 1px solid rgba(116, 230, 255, .14);
      border-radius: 18px;
      background: rgba(1, 8, 18, .42);
    }

    .workflow-card strong {
      display: block;
      margin-bottom: .35rem;
      color: var(--ice);
      font-size: clamp(1.25rem, 2.2vw, 1.8rem);
      letter-spacing: -.04em;
    }

    .workflow-card span {
      color: #9eb3ca;
      font-size: .82rem;
      line-height: 1.35;
    }

    .comparison-wrap {
      display: grid;
      gap: 1rem;
    }

    .compare-panel {
      overflow: hidden;
    }

    .compare-grid {
      display: grid;
      grid-template-columns: minmax(160px, .9fr) repeat(3, minmax(0, 1fr));
    }

    .compare-cell {
      min-width: 0;
      display: grid;
      align-content: center;
      gap: .45rem;
      padding: clamp(.88rem, 1.45vw, 1.12rem);
      border-right: 1px solid rgba(116, 230, 255, .12);
      border-bottom: 1px solid rgba(116, 230, 255, .12);
      color: #c1d3e6;
      line-height: 1.45;
    }

    .compare-cell:nth-child(4n) { border-right: 0; }
    .compare-cell:nth-last-child(-n+4) { border-bottom: 0; }

    .compare-head {
      color: var(--ice);
      background: rgba(116, 230, 255, .075);
      font-weight: 920;
      letter-spacing: .05em;
      text-transform: uppercase;
    }

    .compare-row-label {
      color: #e7f7ff;
      background: rgba(2, 9, 21, .45);
      font-weight: 850;
    }

    .magister-col {
      color: #edfaff;
      background: linear-gradient(180deg, rgba(36, 141, 255, .20), rgba(116, 230, 255, .07));
    }

    .mark-line {
      min-width: 0;
      display: grid;
      grid-template-columns: auto minmax(0, 1fr);
      align-items: start;
      gap: .58rem;
    }

    .mark {
      width: 1.55rem;
      height: 1.55rem;
      display: inline-grid;
      place-items: center;
      flex: 0 0 auto;
      border-radius: 999px;
      font-size: .9rem;
      font-weight: 950;
      line-height: 1;
    }

    .mark.yes {
      color: #031024;
      background: linear-gradient(135deg, var(--green), var(--cyan));
      box-shadow: 0 0 20px rgba(116, 230, 255, .22);
    }

    .mark.no {
      color: #b8c7d6;
      border: 1px solid rgba(184, 199, 214, .28);
      background: rgba(184, 199, 214, .07);
    }

    .mark.partial {
      color: #031024;
      background: linear-gradient(135deg, #dcecff, #8ccfff);
    }

    .cell-text {
      min-width: 0;
      overflow-wrap: anywhere;
    }

    .cell-title {
      display: block;
      margin-bottom: .12rem;
      color: var(--ice);
      font-weight: 880;
    }

    .cell-sub {
      display: block;
      color: #9eb3ca;
      font-size: .9rem;
      line-height: 1.45;
    }

    .compare-cards { display: none; }

    .compare-note {
      margin: 0;
      color: #8ea3bb;
      font-size: .9rem;
      line-height: 1.55;
      text-align: center;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
      gap: 1rem;
      align-items: start;
    }

    .contact-panel {
      padding: clamp(1.35rem, 2.6vw, 2rem);
    }

    .contact-panel p {
      margin-bottom: 1.15rem;
      color: #b5c8dc;
      line-height: 1.7;
    }

    .contact-link {
      overflow-wrap: anywhere;
      color: var(--cyan);
      font-weight: 850;
    }

    .contact-meta {
      margin-top: 1rem;
      margin-bottom: 0;
    }

    .faq-card { padding: .45rem; }

    details {
      border-bottom: 1px solid rgba(116, 230, 255, .12);
      padding: 1rem;
    }

    details:last-child { border-bottom: 0; }

    summary {
      cursor: pointer;
      color: #e7f7ff;
      font-weight: 850;
      list-style: none;
    }

    summary::-webkit-details-marker { display: none; }

    details p {
      margin: .8rem 0 0;
      color: #a9bed3;
      line-height: 1.65;
    }

    .final-cta {
      position: relative;
      overflow: hidden;
      padding: clamp(1.6rem, 4vw, 3rem);
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 1.2rem;
      align-items: center;
      border-color: rgba(116, 230, 255, .25);
      background:
        radial-gradient(circle at 10% 0%, rgba(116, 230, 255, .16), transparent 24rem),
        linear-gradient(135deg, rgba(8, 29, 58, .88), rgba(3, 11, 24, .94));
    }

    .final-cta h2 {
      margin-bottom: .7rem;
      font-size: clamp(2rem, 4.5vw, 4.2rem);
    }

    .final-cta p {
      max-width: 720px;
      margin-bottom: 0;
      color: #b7cadd;
      line-height: 1.68;
    }

    .site-footer {
      border-top: 1px solid rgba(116, 230, 255, .12);
      background:
        radial-gradient(circle at 12% 0%, rgba(116, 230, 255, .08), transparent 24rem),
        rgba(1, 5, 12, .82);
    }

    .footer-main {
      padding: clamp(2rem, 4vw, 3.2rem) 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(240px, 1.2fr) repeat(3, minmax(145px, .55fr));
      gap: clamp(1.2rem, 3vw, 2.4rem);
      align-items: start;
    }

    .footer-brand-block p {
      max-width: 420px;
      margin: 1rem 0 1.1rem;
      color: #9eb3ca;
      line-height: 1.65;
    }

    .footer-cta {
      display: inline-flex;
      width: fit-content;
      min-height: 40px;
      align-items: center;
      justify-content: center;
      padding: .66rem .92rem;
      border: 1px solid rgba(116, 230, 255, .22);
      border-radius: 999px;
      color: #dff7ff;
      background: rgba(116, 230, 255, .07);
      font-weight: 850;
      transition: transform .18s ease, border-color .18s ease, background .18s ease;
    }

    .footer-cta:hover,
    .footer-cta:focus-visible {
      outline: 0;
      transform: translateY(-1px);
      border-color: rgba(116, 230, 255, .42);
      background: rgba(116, 230, 255, .11);
    }

    .footer-col h3 {
      margin: .25rem 0 .85rem;
      color: var(--ice);
      font-size: .82rem;
      letter-spacing: .14em;
      text-transform: uppercase;
    }

    .footer-links {
      display: grid;
      gap: .62rem;
      color: #8ea3bb;
      font-size: .88rem;
    }

    .footer-links a:hover,
    .footer-links a:focus-visible {
      outline: 0;
      color: var(--cyan);
    }

    .footer-bottom {
      border-top: 1px solid rgba(116, 230, 255, .1);
      padding: 1rem 0;
      color: #7890aa;
      font-size: .84rem;
    }

    .footer-bottom-inner {
      display: flex;
      justify-content: space-between;
      gap: 1rem;
      flex-wrap: wrap;
    }

    @media (max-width: 1080px) {
      .nav { grid-template-columns: minmax(0, 1fr) auto; }
      .nav-links { display: none; }
      .hero-grid { grid-template-columns: 1fr; }
      .hero-stats { grid-template-columns: 1fr; max-width: 560px; }
      .chat-shell { max-width: 760px; margin-inline: auto; }
      .visual-wrap { justify-content: center; }
      .explain-grid,
      .faq-grid { grid-template-columns: 1fr; }
    }

    @media (max-width: 820px) {
      body { background-attachment: scroll; }
      .container { width: min(100% - 28px, var(--max)); }
      .nav { min-height: 70px; gap: .75rem; }
      .brand img,
      .footer-brand img { width: 42px; height: 42px; }
      .brand-copy span { display: none; }
      .nav-actions .ghost { display: none; }
      .nav-actions a { padding: .6rem .8rem; font-size: .9rem; }
      .hero { min-height: auto; padding: 3.6rem 0 4.2rem; }
      h1 { max-width: 9.6ch; font-size: clamp(2.85rem, 16vw, 4.5rem); }
      .hero-inner h1 { max-width: 10.4ch; }
      .hero-copy { font-size: 1rem; }
      .micro-proof li { font-size: .8rem; }
      .chat-shell { border-radius: 24px; }
      .chat-frame { grid-template-columns: 1fr; min-height: auto; }
      .chat-sidebar { display: none; }
      .chat-title { text-align: left; }
      .model-pill { display: none; }
      .messages { padding: .92rem; }
      .msg { max-width: min(94%, 440px); }
      .msg.assistant { max-width: min(96%, 520px); }
      .bubble { font-size: .82rem; }
      .composer { padding: .78rem; }
      .workflow-grid { grid-template-columns: 1fr; }
      .compare-panel { display: none; }
      .compare-cards { display: grid; gap: .9rem; }
      .compare-card {
        padding: 1rem;
        border: 1px solid var(--line);
        border-radius: 18px;
        background: linear-gradient(180deg, rgba(8, 26, 52, .76), rgba(3, 11, 24, .86));
      }
      .compare-card h3 { margin-bottom: .8rem; font-size: 1.15rem; }
      .compare-card .mark-line { padding: .72rem 0; border-top: 1px solid rgba(116, 230, 255, .1); }
      .compare-card .mark-line:first-of-type { border-top: 0; padding-top: 0; }
      .final-cta { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-links { justify-content: flex-start; }
      .footer-bottom-inner { display: grid; }
    }

    @media (max-width: 460px) {
      .brand-copy strong,
      .footer-brand-copy strong { letter-spacing: .04em; }
      .btn, .hero-actions { width: 100%; }
      .chat-topbar { grid-template-columns: auto minmax(0, 1fr); padding: .78rem .82rem; }
      .window-controls i { width: .56rem; height: .56rem; }
      .messages { gap: .62rem; padding: .75rem; }
      .bubble { padding: .66rem .72rem; font-size: .78rem; }
      .composer-text { font-size: .76rem; }
      .output-row { grid-template-columns: 1fr; align-items: start; gap: .25rem; }
      .score { white-space: normal; }
    }

    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after {
        scroll-behavior: auto !important;
        transition-duration: .001ms !important;
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
      }
    }

/* Visual polish: cinematic background layer for homepage */
body {
  background:
    linear-gradient(180deg, rgba(2, 7, 18, .68), rgba(2, 7, 18, .94) 44%, rgba(1, 4, 10, .985) 100%),
    radial-gradient(circle at 80% 8%, rgba(36, 141, 255, .18), transparent 31rem),
    radial-gradient(circle at 9% 40%, rgba(116, 230, 255, .09), transparent 28rem),
    url("/background.png") center top / cover fixed no-repeat,
    #020712 !important;
}

body::before {
  background:
    linear-gradient(90deg, rgba(1, 4, 10, .97), rgba(2, 10, 22, .48) 48%, rgba(1, 4, 10, .95)),
    radial-gradient(circle at 50% -12%, rgba(116, 230, 255, .12), transparent 32rem),
    radial-gradient(circle at 50% 112%, rgba(36, 141, 255, .14), transparent 34rem) !important;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 18%, rgba(116,230,255,.12), transparent 24rem),
    linear-gradient(180deg, rgba(2,7,18,.10), rgba(2,7,18,.68));
  mask-image: linear-gradient(180deg, black 0%, black 72%, transparent 100%);
}

@media (max-width: 760px) {
  body {
    background:
      linear-gradient(180deg, rgba(2, 7, 18, .76), rgba(2, 7, 18, .96) 46%, rgba(1, 4, 10, .99) 100%),
      radial-gradient(circle at 70% 0%, rgba(36, 141, 255, .16), transparent 22rem),
      url("/background.png") center top / cover scroll no-repeat,
      #020712 !important;
  }
}

/* Final mobile hardening: no horizontal overflow + fixed background */
html,
body {
  width: 100% !important;
  max-width: 100% !important;
  overflow-x: clip !important;
}

@supports not (overflow-x: clip) {
  html,
  body {
    overflow-x: hidden !important;
  }
}

body {
  background:
    linear-gradient(180deg, rgba(2, 7, 18, .70), rgba(2, 7, 18, .94) 44%, rgba(1, 4, 10, .985) 100%),
    radial-gradient(circle at 80% 8%, rgba(36, 141, 255, .18), transparent 31rem),
    radial-gradient(circle at 9% 40%, rgba(116, 230, 255, .09), transparent 28rem),
    url("/background.png") center top / cover fixed no-repeat,
    #020712 !important;
}

body::before,
body::after {
  max-width: 100vw !important;
  overflow: hidden !important;
}

main,
section,
.container,
.hero,
.hero-inner,
.hero-grid,
.explain-grid,
.visual-wrap,
.chat-shell,
.compare-panel,
.compare-grid,
.faq-grid,
.final-cta,
.footer-grid {
  max-width: 100% !important;
  min-width: 0 !important;
}

img,
video,
canvas,
svg,
table,
pre,
code {
  max-width: 100% !important;
}

pre,
code,
.bubble,
.output-row,
.cell-text,
.compare-cell,
.plan,
.panel,
.explain-panel,
.faq-card,
.final-cta {
  overflow-wrap: anywhere !important;
  word-break: normal !important;
}

/* Mobile/tablet layout correction for index only */
@media (max-width: 980px) {
  .container {
    width: min(var(--max), calc(100% - 24px)) !important;
  }

  .site-header {
    max-width: 100vw !important;
    overflow: hidden !important;
  }

  .nav {
    grid-template-columns: minmax(0, 1fr) auto !important;
    gap: .65rem !important;
  }

  .brand {
    min-width: 0 !important;
  }

  .brand-copy {
    min-width: 0 !important;
  }

  .brand-copy span {
    display: none !important;
  }

  .nav-links {
    display: none !important;
  }

  .nav-actions {
    min-width: 0 !important;
    gap: .45rem !important;
  }

  .nav-actions .ghost {
    display: none !important;
  }

  .nav-actions a {
    max-width: 42vw !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    padding-inline: .75rem !important;
  }

  .hero {
    position: relative !important;
    min-height: auto !important;
    overflow: hidden !important;
    padding: 3.4rem 0 3rem !important;
    text-align: center !important;
  }

  .hero-grid,
  .explain-grid,
  .workflow-grid,
  .faq-grid,
  .final-cta,
  .footer-grid {
    grid-template-columns: 1fr !important;
  }

  .hero-inner,
  .section-head {
    width: 100% !important;
    max-width: 100% !important;
  }

  h1,
  .hero-inner h1 {
    max-width: 100% !important;
    font-size: clamp(2.55rem, 15vw, 4.4rem) !important;
  }

  h2 {
    max-width: 100% !important;
  }

  .hero-copy,
  .section-lead {
    max-width: 100% !important;
  }

  .hero-actions {
    width: 100% !important;
  }

  .hero-actions .btn {
    width: 100% !important;
  }

  .micro-proof {
    width: 100% !important;
  }

  .micro-proof li {
    max-width: 100% !important;
  }

  .hero-stats {
    width: 100% !important;
    grid-template-columns: 1fr !important;
  }

  .visual-wrap {
    width: 100% !important;
    margin: 0 !important;
  }

  .visual-wrap::before {
    inset: -8% 0 !important;
  }

  .chat-shell {
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 !important;
    border-radius: 24px !important;
  }

  .chat-frame {
    grid-template-columns: 1fr !important;
    min-height: auto !important;
  }

  .chat-sidebar {
    display: none !important;
  }

  .messages {
    width: 100% !important;
  }

  .msg,
  .msg.assistant,
  .msg.user {
    max-width: 100% !important;
  }

  .bubble {
    max-width: 100% !important;
  }

  .compare-panel {
    overflow: hidden !important;
  }

  .compare-grid {
    display: none !important;
  }

  .compare-cards {
    display: grid !important;
    gap: .75rem !important;
  }

  .compare-card {
    max-width: 100% !important;
  }

  .final-cta {
    text-align: left !important;
  }

  .final-cta .btn {
    width: 100% !important;
  }
}

/* Small phones: extra strict no-overflow */
@media (max-width: 560px) {
  .container {
    width: min(100%, calc(100% - 20px)) !important;
  }

  .brand img,
  .footer-brand img {
    width: 42px !important;
    height: 42px !important;
  }

  .nav {
    min-height: 66px !important;
  }

  .nav-actions a {
    min-height: 38px !important;
    font-size: .82rem !important;
    max-width: 38vw !important;
  }

  .hero {
    padding-top: 2.7rem !important;
  }

  h1,
  .hero-inner h1 {
    font-size: clamp(2.4rem, 14vw, 3.65rem) !important;
    letter-spacing: -.065em !important;
  }

  .chat-topbar {
    grid-template-columns: auto minmax(0, 1fr) !important;
  }

  .model-pill {
    display: none !important;
  }

  .composer-box {
    min-width: 0 !important;
  }

  .composer-text {
    min-width: 0 !important;
  }
}

/* Mobile header CTA: hide Get Started, show Login only on mobile */
.mobile-login-cta {
  display: none !important;
}

@media (max-width: 760px) {
  .site-header .desktop-cta {
    display: none !important;
  }

  .site-header .mobile-login-cta {
    min-height: 38px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    padding: .58rem .82rem !important;
    border: 1px solid rgba(116, 230, 255, .24) !important;
    border-radius: 999px !important;
    color: #dff7ff !important;
    background: rgba(116, 230, 255, .07) !important;
    font-size: .84rem !important;
    font-weight: 900 !important;
    white-space: nowrap !important;
  }
}