/* ===================================================================
         Tokens — light default · dark via [data-theme="dark"] or system pref
         =================================================================== */
      :root {
        /* Light: warm cream / parchment */
        --bg: #f7f2e6;
        --bg-elevated: #fffaf0;
        --bg-frame: #efe7d4;

        --text: #1a1612;
        --text-muted: #5f574c;
        --text-dim: #948a7c;

        --accent: #c43d2c;
        --accent-strong: #a8302a;
        --accent-soft: rgba(196, 61, 44, 0.08);
        --accent-line: rgba(196, 61, 44, 0.30);

        --border: rgba(13, 11, 15, 0.10);
        --border-strong: rgba(13, 11, 15, 0.20);

        --curve-opacity: 0.10;

        --serif: "Cormorant Garamond", "EB Garamond", Georgia, serif;
        --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, Menlo, monospace;

        --container-pad: clamp(24px, 5vw, 80px);
        --content-max: 1280px;
        --reading-max: 880px;

        --ease: cubic-bezier(0.4, 0, 0.2, 1);
      }

      :root[data-theme="dark"] {
        --bg: #0d0b0f;
        --bg-elevated: #15131a;
        --bg-frame: #110f14;

        --text: #f4ede0;
        --text-muted: #948a7c;
        --text-dim: #5f574c;

        --accent: #d94f3d;
        --accent-strong: #e8634f;
        --accent-soft: rgba(217, 79, 61, 0.10);
        --accent-line: rgba(217, 79, 61, 0.32);

        --border: rgba(244, 237, 224, 0.08);
        --border-strong: rgba(244, 237, 224, 0.16);

        --curve-opacity: 0.09;
      }

      @media (prefers-color-scheme: dark) {
        :root:not([data-theme="light"]) {
          --bg: #0d0b0f;
          --bg-elevated: #15131a;
          --bg-frame: #110f14;

          --text: #f4ede0;
          --text-muted: #948a7c;
          --text-dim: #5f574c;

          --accent: #d94f3d;
          --accent-strong: #e8634f;
          --accent-soft: rgba(217, 79, 61, 0.10);
          --accent-line: rgba(217, 79, 61, 0.32);

          --border: rgba(244, 237, 224, 0.08);
          --border-strong: rgba(244, 237, 224, 0.16);

          --curve-opacity: 0.09;
        }
      }

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

      html,
      body {
        margin: 0;
        padding: 0;
      }

      html {
        background: var(--bg);
      }

      body {
        font-family: var(--serif);
        font-size: 18px;
        line-height: 1.5;
        color: var(--text);
        background: var(--bg);
        min-height: 100vh;
        -webkit-font-smoothing: antialiased;
        text-rendering: optimizeLegibility;
        font-feature-settings: "kern" 1, "liga" 1;
        overflow-x: hidden;
      }

      ::selection {
        background: var(--accent);
        color: var(--bg);
      }

      .container {
        width: 100%;
        max-width: var(--content-max);
        margin: 0 auto;
        padding: 0 var(--container-pad);
        position: relative;
        z-index: 1;
      }

      a {
        color: inherit;
      }

      /* Language switching */
      :root:not([data-lang="en"]) .i18n-en {
        display: none;
      }
      :root[data-lang="en"] .i18n-fr {
        display: none;
      }

      /* ===================================================================
         Background — gaussian curve watermark
         =================================================================== */
      .bg-curve {
        position: fixed;
        inset: 0;
        z-index: 0;
        pointer-events: none;
        display: flex;
        align-items: flex-end;
        justify-content: center;
        overflow: hidden;
      }

      .bg-curve svg {
        width: 140vw;
        height: 70vh;
        color: var(--accent);
        opacity: var(--curve-opacity, 0.10);
        transform: translateX(calc(var(--curve-shift, 0) * 14%));
        will-change: transform;
      }

      .bg-curve-fill {
        fill: var(--accent);
        opacity: 0.06;
      }

      /* ===================================================================
         Header
         =================================================================== */
      .site-header {
        position: relative;
        z-index: 5;
        padding: 28px 0;
      }

      .header-row {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 24px;
      }

      .brand {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        text-decoration: none;
        color: var(--text);
        line-height: 1;
      }

      .brand-mark {
        font-family: var(--serif);
        font-size: 22px;
        font-weight: 600;
        font-style: italic;
        color: var(--accent);
        line-height: 1;
      }

      .brand-logo {
        width: 30px;
        height: 30px;
        border-radius: 50%;
        object-fit: cover;
        display: block;
        flex-shrink: 0;
      }

      .brand-name {
        font-family: var(--serif);
        font-size: 22px;
        font-weight: 600;
        letter-spacing: -0.005em;
        line-height: 1;
        display: inline-block;
      }

      .lang-toggle {
        display: inline-flex;
        gap: 0;
        font-family: var(--mono);
        font-size: 11.5px;
        font-weight: 500;
        letter-spacing: 0.12em;
        color: var(--text-dim);
      }

      .lang-toggle button {
        appearance: none;
        background: transparent;
        border: none;
        color: var(--text-dim);
        padding: 4px 8px;
        cursor: pointer;
        font: inherit;
        letter-spacing: inherit;
        transition: color 220ms var(--ease);
      }

      .lang-toggle button:hover {
        color: var(--text-muted);
      }

      :root:not([data-lang="en"]) .lang-toggle [data-lang-target="fr"],
      :root[data-lang="en"] .lang-toggle [data-lang-target="en"] {
        color: var(--text);
      }

      .lang-divider {
        align-self: center;
        color: var(--text-dim);
      }

      /* ===================================================================
         Stage scaffolding
         =================================================================== */
      .stage {
        position: relative;
        padding: clamp(120px, 18vh, 220px) 0;
      }

      .stage--hero {
        min-height: calc(100vh - 84px);
        padding-top: clamp(60px, 12vh, 140px);
        padding-bottom: clamp(80px, 14vh, 180px);
        display: flex;
        flex-direction: column;
        justify-content: center;
      }

      .narrow {
        max-width: var(--reading-max);
      }

      .narrow-tight {
        max-width: 640px;
      }

      .label {
        font-family: var(--mono);
        font-size: 11.5px;
        letter-spacing: 0.18em;
        text-transform: uppercase;
        color: var(--text-dim);
        font-weight: 500;
      }

      .label .num {
        color: var(--accent);
      }

      /* ===================================================================
         Section 1 — Hero
         =================================================================== */
      .hero-eyebrow {
        margin: 0 0 56px;
      }

      .hero-hook {
        font-family: var(--serif);
        font-weight: 400;
        font-size: clamp(28px, 3.6vw, 48px);
        line-height: 1.18;
        letter-spacing: -0.012em;
        color: var(--text);
        margin: 0;
      }

      .hero-line {
        display: block;
        opacity: 0;
        transform: translateY(10px);
        animation: lineRise 1100ms var(--ease) forwards;
      }

      .hero-line:nth-of-type(1) {
        animation-delay: 200ms;
      }
      .hero-line:nth-of-type(2) {
        animation-delay: 750ms;
      }
      .hero-line:nth-of-type(3) {
        animation-delay: 1300ms;
      }

      @keyframes lineRise {
        to {
          opacity: 1;
          transform: translateY(0);
        }
      }

      .hero-quote-wrap {
        margin: clamp(72px, 10vh, 120px) 0 0;
        margin-left: clamp(0px, 6vw, 80px);
        opacity: 0;
        animation: fadeIn 800ms var(--ease) 2700ms forwards;
      }

      @keyframes fadeIn {
        to {
          opacity: 1;
        }
      }

      .hero-quote {
        font-family: var(--serif);
        font-style: italic;
        font-weight: 500;
        font-size: clamp(44px, 7.6vw, 110px);
        line-height: 1;
        letter-spacing: -0.025em;
        color: var(--text);
        margin: 0;
        position: relative;
        display: inline-block;
        max-width: 100%;
      }

      .hero-quote-cursor {
        display: inline-block;
        width: 0.06em;
        height: 0.85em;
        background: var(--accent);
        margin-left: 0.05em;
        vertical-align: -0.1em;
        animation: cursorBlink 1.05s steps(1) infinite;
      }

      @keyframes cursorBlink {
        0%, 49% { opacity: 1; }
        50%, 100% { opacity: 0; }
      }

      .hero-sub {
        margin: clamp(40px, 6vh, 64px) 0 0;
        font-family: var(--mono);
        font-size: 14px;
        line-height: 1.6;
        letter-spacing: 0.01em;
        color: var(--text-muted);
        max-width: 560px;
        opacity: 0;
        animation: fadeIn 800ms var(--ease) 4800ms forwards;
      }

      @media (prefers-reduced-motion: reduce) {
        .hero-line,
        .hero-quote-wrap,
        .hero-sub {
          opacity: 1 !important;
          transform: none !important;
          animation: none !important;
        }
        .hero-quote-cursor {
          display: none;
        }
      }

      /* ===================================================================
         Section 2 — Problem
         =================================================================== */
      .problem-stack {
        display: flex;
        flex-direction: column;
        gap: clamp(40px, 7vh, 72px);
      }

      .problem-line {
        font-family: var(--serif);
        font-weight: 500;
        font-size: clamp(28px, 4.6vw, 60px);
        line-height: 1.12;
        letter-spacing: -0.022em;
        color: var(--text);
        margin: 0;
        max-width: 22ch;
        opacity: 0;
        transform: translateY(14px);
        transition:
          opacity 900ms var(--ease),
          transform 900ms var(--ease);
      }

      .problem-line.is-visible {
        opacity: 1;
        transform: translateY(0);
      }

      .problem-line--shift {
        margin-left: clamp(0px, 14vw, 200px);
      }

      .problem-line--right {
        margin-left: auto;
        text-align: right;
      }

      .problem-line .accent-mark {
        color: var(--accent);
      }

      @media (prefers-reduced-motion: reduce) {
        .problem-line {
          opacity: 1;
          transform: none;
        }
      }

      /* ===================================================================
         Section 3 — Turn
         =================================================================== */
      .turn-paragraph {
        font-family: var(--serif);
        font-weight: 400;
        font-size: clamp(22px, 2.6vw, 32px);
        line-height: 1.45;
        letter-spacing: -0.012em;
        color: var(--text);
        margin: 0;
        max-width: 30ch;
      }

      .turn-paragraph .name {
        color: var(--accent);
        font-weight: 500;
        font-style: italic;
      }

      .turn-paragraph em {
        font-style: italic;
        color: var(--text-muted);
      }

      .turn-label {
        margin-bottom: clamp(40px, 6vh, 72px);
      }

      /* ===================================================================
         Section 4 — Demo (monospace frames)
         =================================================================== */
      .demo-rail {
        margin-top: clamp(48px, 8vh, 80px);
        display: grid;
        gap: 24px;
        grid-template-columns: 1fr;
      }

      @media (min-width: 980px) {
        .demo-rail {
          grid-template-columns: 1fr 1fr 1fr;
          gap: 20px;
        }
      }

      .frame {
        position: relative;
        font-family: var(--mono);
        font-size: 13px;
        line-height: 1.65;
        background: var(--bg-frame);
        border: 1px solid var(--border);
        padding: 22px 22px 24px;
        color: var(--text);
        min-height: 280px;
      }

      .frame-tag {
        font-family: var(--mono);
        font-size: 10.5px;
        letter-spacing: 0.18em;
        text-transform: uppercase;
        color: var(--text-dim);
        margin: 0 0 18px;
        display: flex;
        justify-content: space-between;
        align-items: baseline;
      }

      .frame-tag .num {
        color: var(--accent);
      }

      .frame-line {
        display: block;
        white-space: pre-wrap;
      }

      .frame-line.muted {
        color: var(--text-dim);
      }

      .frame-line.accent {
        color: var(--accent);
      }

      .frame-prompt::before {
        content: "❯ ";
        color: var(--accent);
      }

      .frame-file {
        display: flex;
        justify-content: space-between;
        gap: 16px;
        padding: 4px 0;
        color: var(--text);
      }

      .frame-file .ok {
        color: var(--accent);
      }

      .frame-file .size {
        color: var(--text-dim);
      }

      .frame-progress {
        margin-top: 14px;
        color: var(--text-muted);
        font-size: 12.5px;
      }

      .frame-progress .dots::after {
        content: "⠋";
        animation: spin 800ms steps(8) infinite;
      }

      @keyframes spin {
        0% { content: "⠋"; }
        12.5% { content: "⠙"; }
        25% { content: "⠹"; }
        37.5% { content: "⠸"; }
        50% { content: "⠼"; }
        62.5% { content: "⠴"; }
        75% { content: "⠦"; }
        87.5% { content: "⠧"; }
        100% { content: "⠇"; }
      }

      /* The middle "Examen généré" frame is the actual product surface —
         render its content like an AMC EPFL paper page. Background stays
         flush with the other frames so the demo rail reads as one unit. */
      .frame--exam {
        font-family: var(--serif);
        font-size: 15px;
        line-height: 1.5;
        color: var(--text);
      }
      .frame--exam .frame-tag {
        font-family: var(--mono);
      }

      .exam-section-title {
        font-family: var(--serif);
        font-size: 18.5px;
        font-weight: 700;
        margin: 0 0 12px;
        line-height: 1.25;
        color: var(--text);
        letter-spacing: 0;
      }

      .exam-instructions {
        font-size: 13.5px;
        line-height: 1.45;
        color: var(--text-muted);
        margin: 0 0 18px;
      }

      .exam-q-prose {
        font-size: 15px;
        line-height: 1.5;
        margin: 0 0 8px;
        color: var(--text);
      }
      .exam-q-prose strong {
        font-weight: 700;
      }

      .exam-choices {
        list-style: none;
        margin: 0;
        padding: 0;
      }
      .exam-choices li {
        display: flex;
        align-items: flex-start;
        gap: 11px;
        padding: 4px 0;
        font-size: 15px;
        line-height: 1.4;
        color: var(--text);
      }
      .exam-choices li::before {
        content: "";
        display: block;
        width: 12px;
        height: 12px;
        border: 1px solid var(--text-muted);
        flex-shrink: 0;
        margin-top: 7px;
      }
      .frame--exam .katex {
        font-size: 1em;
        color: inherit;
      }

      .frame--feedback .frame-row {
        display: grid;
        grid-template-columns: 78px 1fr;
        gap: 12px;
        padding: 2px 0;
      }

      .frame--feedback .frame-row .key {
        color: var(--text-dim);
      }

      .frame--feedback .strike {
        color: var(--text-muted);
        text-decoration: line-through;
        text-decoration-color: var(--accent);
      }

      .frame--feedback .correction {
        color: var(--accent);
      }

      .frame--feedback .frame-note {
        margin-top: 14px;
        padding-top: 14px;
        border-top: 1px dashed var(--border-strong);
        color: var(--text-muted);
        line-height: 1.55;
      }

      .frame--feedback .frame-note::before {
        content: "✎ ";
        color: var(--accent);
      }

      .frame-arrow {
        display: none;
      }

      @media (min-width: 980px) {
        .demo-rail {
          align-items: stretch;
        }
        .frame {
          height: 100%;
        }
      }

      /* ===================================================================
         Section 5 — Close
         =================================================================== */
      .close-stack {
        display: flex;
        flex-direction: column;
        gap: 20px;
      }

      .close-prelude {
        font-family: var(--serif);
        font-style: italic;
        font-weight: 400;
        font-size: clamp(20px, 2.4vw, 30px);
        line-height: 1.4;
        color: var(--text-muted);
        margin: 0;
        max-width: 28ch;
      }

      .close-payoff {
        font-family: var(--serif);
        font-weight: 600;
        font-size: clamp(40px, 6.5vw, 96px);
        line-height: 1.02;
        letter-spacing: -0.03em;
        color: var(--text);
        margin: 8px 0 0;
        max-width: 18ch;
      }

      .close-payoff .accent {
        color: var(--accent);
      }

      .close-cta-row {
        margin-top: clamp(44px, 7vh, 72px);
        display: flex;
        align-items: center;
        gap: 28px;
        flex-wrap: wrap;
      }

      .cta {
        display: inline-flex;
        align-items: center;
        gap: 12px;
        padding: 18px 32px;
        font-family: var(--mono);
        font-size: 14px;
        font-weight: 500;
        letter-spacing: 0.06em;
        text-transform: uppercase;
        color: var(--bg);
        background: var(--accent);
        border: 1px solid var(--accent);
        text-decoration: none;
        cursor: pointer;
        transition:
          background 220ms var(--ease),
          color 220ms var(--ease),
          transform 180ms var(--ease),
          box-shadow 220ms var(--ease);
      }

      .cta:hover {
        background: var(--accent-strong);
        border-color: var(--accent-strong);
        transform: translateY(-1px);
        box-shadow: 0 18px 40px rgba(217, 79, 61, 0.28);
      }

      .cta:active {
        transform: translateY(0);
      }

      .cta .arrow {
        font-family: var(--serif);
        font-size: 18px;
        font-weight: 400;
        font-style: italic;
        letter-spacing: 0;
        text-transform: none;
        transition: transform 220ms var(--ease);
      }

      .cta:hover .arrow {
        transform: translateX(4px);
      }

      .cta-meta {
        font-family: var(--mono);
        font-size: 11.5px;
        letter-spacing: 0.14em;
        color: var(--text-dim);
        text-transform: uppercase;
      }

      /* Countdown strip */
      .countdown {
        margin-top: clamp(56px, 8vh, 96px);
        padding-top: 32px;
        border-top: 1px dashed var(--border-strong);
        font-family: var(--mono);
        font-size: 12.5px;
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--text-muted);
        display: flex;
        justify-content: space-between;
        gap: 24px;
        flex-wrap: wrap;
      }

      .countdown-num {
        color: var(--accent);
        font-weight: 500;
      }

      /* ===================================================================
         Footer
         =================================================================== */
      .site-footer {
        position: relative;
        z-index: 1;
        padding: 56px 0 64px;
        margin-top: 80px;
        border-top: 1px solid var(--border);
      }

      .footer-row {
        display: flex;
        justify-content: space-between;
        align-items: baseline;
        gap: 24px;
        font-family: var(--mono);
        font-size: 12px;
        letter-spacing: 0.08em;
        color: var(--text-dim);
        flex-wrap: wrap;
      }

      .footer-row em {
        font-style: italic;
        color: var(--text-muted);
      }

      .footer-disclaimer {
        display: block;
        margin-top: 4px;
        font-style: italic;
        color: var(--text-dim);
        opacity: 0.85;
      }

      .footer-legal {
        display: inline-flex;
        gap: 16px;
        flex-wrap: wrap;
      }
      .footer-legal a {
        color: var(--text-muted);
        text-decoration: none;
        transition: color 140ms ease;
      }
      .footer-legal a:hover {
        color: var(--accent);
      }
      .footer-legal-sep {
        opacity: 0.4;
      }

      /* ===================================================================
         Legal pages — Mentions légales, Confidentialité, CGV
         =================================================================== */
      .legal-article {
        max-width: 760px;
        margin: 0 auto;
      }
      .legal-article h1 {
        font-family: var(--serif);
        font-size: clamp(32px, 5vw, 44px);
        line-height: 1.15;
        font-weight: 600;
        letter-spacing: -0.01em;
        margin: 0 0 8px;
      }
      .legal-article .legal-updated {
        font-family: var(--mono);
        font-size: 11px;
        letter-spacing: 0.14em;
        text-transform: uppercase;
        color: var(--text-dim);
        margin: 0 0 40px;
      }
      .legal-article h2 {
        font-family: var(--serif);
        font-size: 24px;
        line-height: 1.25;
        font-weight: 600;
        margin: 40px 0 12px;
        color: var(--text);
      }
      .legal-article h2 .num {
        font-family: var(--mono);
        font-size: 13px;
        font-weight: 500;
        color: var(--accent);
        margin-right: 10px;
        letter-spacing: 0.08em;
      }
      .legal-article p,
      .legal-article li {
        font-family: var(--serif);
        font-size: 17px;
        line-height: 1.6;
        color: var(--text);
      }
      .legal-article p {
        margin: 0 0 14px;
      }
      .legal-article ul {
        margin: 0 0 14px;
        padding-left: 22px;
      }
      .legal-article li {
        margin-bottom: 6px;
      }
      .legal-article strong {
        color: var(--text);
        font-weight: 600;
      }
      .legal-article a {
        color: var(--accent);
        text-decoration: underline;
        text-underline-offset: 2px;
      }
      .legal-article code {
        font-family: var(--mono);
        font-size: 14px;
        background: var(--bg-elevated, var(--bg-subtle, transparent));
        border: 1px solid var(--border);
        border-radius: 4px;
        padding: 1px 6px;
      }
      .legal-contact-card {
        margin: 16px 0 8px;
        padding: 18px 20px;
        border: 1px solid var(--border);
        border-radius: 8px;
        background: var(--bg-elevated, transparent);
      }
      .legal-contact-card p {
        margin: 0 0 4px;
        font-size: 16px;
      }
      .legal-contact-card p:last-child {
        margin-bottom: 0;
      }

      /* ===================================================================
         Header — nav + auth additions
         =================================================================== */
      .header-row {
        gap: 32px;
      }

      .header-nav {
        display: inline-flex;
        align-items: center;
        gap: 28px;
        margin-right: auto;
        margin-left: 8px;
      }

      .header-nav a {
        font-family: var(--mono);
        font-size: 12px;
        letter-spacing: 0.14em;
        text-transform: uppercase;
        color: var(--text-muted);
        text-decoration: none;
        padding: 4px 0;
        position: relative;
        transition: color 200ms var(--ease);
      }

      .header-nav a::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: -2px;
        width: 0;
        height: 1px;
        background: var(--accent);
        transition: width 240ms var(--ease);
      }

      .header-nav a:hover {
        color: var(--text);
      }

      .header-nav a:hover::after {
        width: 100%;
      }

      .header-tools {
        display: inline-flex;
        align-items: center;
        gap: 18px;
      }

      .nav-link {
        font-family: var(--mono);
        font-size: 12px;
        letter-spacing: 0.14em;
        text-transform: uppercase;
        color: var(--text-muted);
        text-decoration: none;
        padding: 4px 0;
        transition: color 200ms var(--ease);
      }

      .nav-link:hover {
        color: var(--text);
      }

      .cta-sm {
        padding: 10px 18px;
        font-size: 11.5px;
        letter-spacing: 0.14em;
        gap: 8px;
      }

      .cta-sm .arrow {
        font-size: 14px;
      }

      .header-tools {
        display: inline-flex;
        align-items: center;
        gap: 8px;
      }
      .header-tools-row {
        display: inline-flex;
        align-items: center;
        gap: 18px;
      }
      @media (max-width: 880px) {
        .header-row {
          gap: 16px;
          flex-wrap: wrap;
        }
        .header-nav,
        .nav-link {
          display: none;
        }
      }

      /* ===================================================================
         About section
         =================================================================== */
      .about-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: clamp(40px, 6vh, 72px);
        align-items: start;
      }

      @media (min-width: 920px) {
        .about-grid {
          grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.9fr);
          gap: clamp(48px, 7vw, 96px);
        }
      }

      .about-h2 {
        font-family: var(--serif);
        font-weight: 500;
        font-size: clamp(28px, 4vw, 52px);
        line-height: 1.12;
        letter-spacing: -0.02em;
        color: var(--text);
        margin: 0 0 28px;
        max-width: 22ch;
      }

      .about-h2 .accent {
        color: var(--accent);
        font-style: italic;
      }

      .about-body {
        font-family: var(--serif);
        font-size: clamp(18px, 1.7vw, 22px);
        line-height: 1.55;
        color: var(--text-muted);
        margin: 0;
        max-width: 38ch;
      }

      .about-aside {
        font-family: var(--mono);
        font-size: 12.5px;
        line-height: 1.9;
        color: var(--text-muted);
        padding: 24px 26px;
        border: 1px solid var(--border);
        background: var(--bg-frame);
      }

      .aside-line {
        margin: 0;
        display: flex;
        gap: 14px;
        align-items: baseline;
      }

      .aside-key {
        color: var(--text-dim);
        flex-shrink: 0;
        min-width: 84px;
      }

      /* ===================================================================
         Samples — real generated PDFs in a tabbed viewer
         =================================================================== */
      .samples-intro {
        font-family: var(--serif);
        font-size: clamp(17px, 1.4vw, 20px);
        line-height: 1.55;
        color: var(--text-muted);
        max-width: 720px;
        margin: 0 0 32px;
      }
      .samples-card {
        background: var(--bg-elevated, #fffaf0);
        border: 1px solid var(--border);
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
      }
      .samples-tabs {
        display: flex;
        gap: 0;
        border-bottom: 1px solid var(--border);
        background: var(--bg-frame, var(--bg));
        flex-wrap: wrap;
      }
      .samples-tab {
        background: transparent;
        border: none;
        border-bottom: 2px solid transparent;
        padding: 14px 24px;
        font-family: var(--mono);
        font-size: 12px;
        letter-spacing: 0.10em;
        text-transform: uppercase;
        color: var(--text-muted);
        cursor: pointer;
        transition: color 0.15s var(--ease, ease), border-color 0.15s var(--ease, ease);
        margin-bottom: -1px;
      }
      .samples-tab:hover { color: var(--text); }
      .samples-tab.is-active {
        color: var(--accent);
        border-bottom-color: var(--accent);
      }
      .samples-iframe {
        width: 100%;
        height: 760px;
        border: 0;
        display: block;
        background: var(--bg-elevated);
      }
      @media (max-width: 720px) {
        .samples-iframe { height: 480px; }
        .samples-tab { padding: 12px 16px; font-size: 11px; }
      }

      /* ===================================================================
         Pricing section
         =================================================================== */
      .pricing-h2 {
        font-family: var(--serif);
        font-weight: 500;
        font-size: clamp(32px, 4.6vw, 60px);
        line-height: 1.1;
        letter-spacing: -0.022em;
        margin: 0 0 clamp(40px, 6vh, 72px);
        max-width: 18ch;
      }

      .pricing-h2 .accent {
        color: var(--accent);
        font-style: italic;
      }

      .pricing-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 20px;
      }

      @media (min-width: 1000px) {
        .pricing-grid {
          grid-template-columns: repeat(3, 1fr);
          gap: 22px;
        }
      }

      .pricing-frame {
        display: flex;
        flex-direction: column;
        gap: 14px;
        font-size: 14px;
        padding: 28px 28px 32px;
        position: relative;
      }

      .pricing-frame--ghost {
        opacity: 0.78;
      }

      /* Max Pack — visually emphasized as the recommended SKU */
      .pricing-frame--featured {
        border-color: var(--accent);
        box-shadow: 0 0 0 1px var(--accent-border), 0 8px 28px rgba(0,0,0,0.06);
      }

      .pricing-h2-sub {
        font-family: var(--serif);
        font-style: italic;
        font-size: clamp(17px, 1.4vw, 21px);
        color: var(--text-muted);
        margin: 12px 0 36px;
        max-width: 620px;
        line-height: 1.5;
      }

      .pricing-footnote--centered {
        text-align: center;
        margin-top: 32px;
      }

      .pricing-amount {
        font-family: var(--serif);
        font-weight: 600;
        font-size: clamp(56px, 7vw, 88px);
        line-height: 1;
        letter-spacing: -0.04em;
        margin: 8px 0 4px;
        color: var(--accent);
      }

      .pricing-amount--muted {
        color: var(--text);
      }

      .pricing-unit {
        font-family: var(--mono);
        font-size: 16px;
        letter-spacing: 0.04em;
        color: var(--text-muted);
        font-weight: 400;
        margin-left: 4px;
      }

      .pricing-sub {
        margin: 0 0 6px;
        font-family: var(--mono);
        font-size: 12px;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        color: var(--text-dim);
      }

      .pricing-list {
        list-style: none;
        margin: 14px 0 22px;
        padding: 0;
        font-family: var(--serif);
        font-size: 16.5px;
        line-height: 1.55;
        color: var(--text);
      }

      .pricing-list li {
        padding: 6px 0 6px 22px;
        position: relative;
        border-top: 1px dashed var(--border);
      }

      .pricing-list li:first-child {
        border-top: none;
      }

      .pricing-list li::before {
        content: "+";
        position: absolute;
        left: 0;
        top: 6px;
        font-family: var(--mono);
        color: var(--accent);
        font-size: 14px;
      }

      .pricing-footnote {
        margin: 0;
        font-family: var(--mono);
        font-size: 11.5px;
        letter-spacing: 0.1em;
        text-transform: uppercase;
        color: var(--text-dim);
      }

      .cta-block {
        margin-top: auto;
        align-self: stretch;
        justify-content: center;
      }

      /* Belt-and-suspenders: something in the cascade is putting a
         text-decoration: underline on .cta inside pricing-frame. Pin
         it off across every link state so the button stays clean. */
      .pricing-frame .cta,
      .pricing-frame .cta:hover,
      .pricing-frame .cta:focus,
      .pricing-frame .cta:active,
      .pricing-frame .cta:visited {
        text-decoration: none;
      }

      /* ===================================================================
         Responsive
         =================================================================== */
      @media (max-width: 720px) {
        body {
          font-size: 17px;
        }
        .stage {
          padding: clamp(80px, 14vh, 140px) 0;
        }
        .problem-line--shift,
        .problem-line--right {
          margin-left: 0;
          text-align: left;
        }
        .turn-paragraph {
          max-width: none;
        }
      }