/* ── Reset ──────────────────────────────────────────────────────────── */
      *,
      *::before,
      *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
      }
      html {
        scroll-behavior: smooth;
      }

      /* ── Tokens: Light ──────────────────────────────────────────────────── */
      :root {
        --primary: #1a6b3c;
        --primary-lt: #e8f5ee;
        --primary-dk: #145530;
        --buy: #2563eb;
        --buy-lt: #eff6ff;
        --sell: #059669;
        --sell-lt: #ecfdf5;
        --amber: #d97706;
        --red: #dc2626;
        --bg: #f4f6f9;
        --bg-alt: #f0f7f4;
        --surface: #ffffff;
        --border: #e0e4eb;
        --text: #1a1d23;
        --text-muted: #6b7280;
        --text-light: #9ca3af;
        --nav-bg: rgba(255, 255, 255, 0.92);
        --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.07);
        --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
        --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.1);
        --radius-sm: 8px;
        --radius: 12px;
        --radius-lg: 16px;
        --font: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
      }

      /* ── Tokens: Dark ───────────────────────────────────────────────────── */
      [data-theme="dark"] {
        --bg: #0f1117;
        --bg-alt: #141a20;
        --surface: #1c1f26;
        --border: #2d3140;
        --text: #e8eaf0;
        --text-muted: #8b92a5;
        --text-light: #6b7280;
        --nav-bg: rgba(28, 31, 38, 0.92);
        --primary-lt: #122a1a;
        --buy-lt: #0f1e3a;
        --sell-lt: #0a2118;
      }

      /* ── Base ───────────────────────────────────────────────────────────── */
      body {
        font-family: var(--font);
        font-size: 16px;
        color: var(--text);
        background: var(--bg);
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
      }

      a {
        color: var(--primary);
        text-decoration: none;
      }
      a:hover {
        text-decoration: underline;
      }
      img {
        max-width: 100%;
        display: block;
      }

      .container {
        max-width: 1120px;
        margin: 0 auto;
        padding: 0 24px;
      }

      section {
        padding: 88px 0;
      }

      .section-label {
        display: inline-block;
        font-size: 12px;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.8px;
        color: var(--primary);
        background: var(--primary-lt);
        padding: 4px 12px;
        border-radius: 20px;
        margin-bottom: 14px;
      }

      h2.section-heading {
        font-size: clamp(28px, 4vw, 40px);
        font-weight: 800;
        color: var(--text);
        line-height: 1.2;
        margin-bottom: 12px;
      }

      p.section-sub {
        font-size: 17px;
        color: var(--text-muted);
        max-width: 580px;
        line-height: 1.65;
      }

      .text-center {
        text-align: center;
      }
      .text-center .section-sub {
        margin: 0 auto;
      }

      /* ── Buttons ────────────────────────────────────────────────────────── */
      .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 12px 24px;
        font-family: var(--font);
        font-size: 15px;
        font-weight: 600;
        border-radius: var(--radius-sm);
        cursor: pointer;
        border: 2px solid transparent;
        transition: all 0.18s ease;
        text-decoration: none;
        white-space: nowrap;
      }
      .btn-primary {
        background: var(--primary);
        color: white;
        border-color: var(--primary);
      }
      .btn-primary:hover {
        background: var(--primary-dk);
        border-color: var(--primary-dk);
        text-decoration: none;
      }
      .btn-outline {
        background: transparent;
        color: var(--primary);
        border-color: var(--primary);
      }
      .btn-outline:hover {
        background: var(--primary-lt);
        text-decoration: none;
      }
      .btn-ghost {
        background: transparent;
        color: var(--text-muted);
        border-color: var(--border);
      }
      .btn-ghost:hover {
        background: var(--surface);
        color: var(--text);
        text-decoration: none;
      }
      .btn-sm {
        padding: 8px 18px;
        font-size: 13px;
      }
      .btn-lg {
        padding: 15px 32px;
        font-size: 16px;
        border-radius: 10px;
      }

      /* ── NAV ────────────────────────────────────────────────────────────── */
      .nav {
        position: sticky;
        top: 0;
        z-index: 100;
        background: var(--nav-bg);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--border);
        transition: box-shadow 0.2s;
      }
      .nav.scrolled {
        box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
      }

      .nav-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 64px;
      }

      .nav-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        text-decoration: none;
        flex-shrink: 0;
      }
      .nav-logo-icon {
        width: 34px;
        height: 34px;
        background: var(--primary);
        border-radius: 9px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 16px;
        color: white;
        font-weight: 800;
        flex-shrink: 0;
      }
      .nav-logo-text {
        font-size: 15px;
        font-weight: 700;
        color: var(--text);
      }
      .nav-logo:hover {
        text-decoration: none;
      }

      .nav-links {
        display: flex;
        align-items: center;
        gap: 4px;
        list-style: none;
      }
      .nav-links a {
        font-size: 14px;
        font-weight: 500;
        color: var(--text-muted);
        padding: 6px 10px;
        border-radius: 6px;
        transition:
          color 0.15s,
          background 0.15s;
        text-decoration: none;
      }
      .nav-links a:hover,
      .nav-links a.active {
        color: var(--primary);
        background: var(--primary-lt);
      }

      .nav-actions {
        display: flex;
        align-items: center;
        gap: 8px;
      }

      .theme-btn {
        background: none;
        border: none;
        cursor: pointer;
        font-size: 18px;
        padding: 6px 8px;
        border-radius: 6px;
        color: var(--text-muted);
        transition: background 0.15s;
      }
      .theme-btn:hover {
        background: var(--border);
      }

      .hamburger {
        display: none;
        background: none;
        border: none;
        cursor: pointer;
        padding: 6px;
        border-radius: 6px;
        flex-direction: column;
        gap: 5px;
      }
      .hamburger span {
        display: block;
        width: 22px;
        height: 2px;
        background: var(--text);
        border-radius: 2px;
        transition: all 0.2s;
      }
      .hamburger.open span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
      }
      .hamburger.open span:nth-child(2) {
        opacity: 0;
      }
      .hamburger.open span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
      }

      .mobile-menu {
        display: none;
        flex-direction: column;
        background: var(--surface);
        border-top: 1px solid var(--border);
        padding: 12px 24px 20px;
        gap: 4px;
      }
      .mobile-menu.open {
        display: flex;
      }
      .mobile-menu a {
        font-size: 15px;
        font-weight: 500;
        color: var(--text);
        padding: 10px 0;
        border-bottom: 1px solid var(--border);
        text-decoration: none;
      }
      .mobile-menu a:last-child {
        border-bottom: none;
      }
      .mobile-menu .btn {
        margin-top: 8px;
        justify-content: center;
      }

      @media (max-width: 768px) {
        .nav-links,
        .nav-actions .btn {
          display: none;
        }
        .hamburger {
          display: flex;
        }
      }

      /* ── HERO ───────────────────────────────────────────────────────────── */
      #hero {
        padding: 80px 0 72px;
        background: linear-gradient(160deg, var(--bg) 0%, var(--bg-alt) 100%);
        overflow: hidden;
      }

      .hero-inner {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 60px;
        align-items: center;
      }

      .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: 12px;
        font-weight: 600;
        color: var(--primary);
        background: var(--primary-lt);
        border: 1px solid #a7d3b8;
        padding: 5px 12px;
        border-radius: 20px;
        margin-bottom: 20px;
      }

      .hero-badge span {
        width: 6px;
        height: 6px;
        background: var(--primary);
        border-radius: 50%;
      }

      h1.hero-heading {
        font-size: clamp(34px, 4.5vw, 54px);
        font-weight: 800;
        line-height: 1.15;
        color: var(--text);
        letter-spacing: -0.5px;
        margin-bottom: 20px;
      }
      h1.hero-heading em {
        color: var(--primary);
        font-style: normal;
      }

      .hero-sub {
        font-size: 18px;
        color: var(--text-muted);
        line-height: 1.65;
        margin-bottom: 32px;
        max-width: 480px;
      }

      .hero-ctas {
        display: flex;
        align-items: center;
        gap: 8px;
        flex-wrap: nowrap;
        margin-bottom: 20px;
      }

      .hero-trust {
        font-size: 13px;
        color: var(--text-muted);
        display: flex;
        align-items: center;
        gap: 6px;
      }

      /* Browser + popup mockup */
      .hero-visual {
        display: flex;
        justify-content: center;
        align-items: flex-start;
        position: relative;
      }

      .browser-shell {
        width: 100%;
        max-width: 420px;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: 14px;
        box-shadow: var(--shadow-lg);
        overflow: hidden;
      }

      .browser-bar {
        background: var(--bg);
        border-bottom: 1px solid var(--border);
        padding: 10px 14px;
        display: flex;
        align-items: center;
        gap: 10px;
      }
      .browser-dots {
        display: flex;
        gap: 5px;
      }
      .browser-dots span {
        width: 10px;
        height: 10px;
        border-radius: 50%;
      }
      .browser-dots span:nth-child(1) {
        background: #fe5f57;
      }
      .browser-dots span:nth-child(2) {
        background: #febc2e;
      }
      .browser-dots span:nth-child(3) {
        background: #28c840;
      }
      .browser-url {
        flex: 1;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: 6px;
        padding: 4px 10px;
        font-size: 12px;
        color: var(--text-muted);
        display: flex;
        align-items: center;
        gap: 6px;
      }
      .browser-url::before {
        content: "🔒";
        font-size: 10px;
      }

      .browser-ext {
        width: 22px;
        height: 22px;
        background: var(--primary);
        border-radius: 5px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 11px;
        color: white;
        font-weight: 800;
        cursor: pointer;
        flex-shrink: 0;
      }

      /* Extension popup inside browser */
      .ext-popup {
        width: 100%;
        background: var(--bg);
      }

      .popup-menu-header {
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        padding: 14px 16px;
        display: flex;
        align-items: center;
        justify-content: space-between;
      }
      .popup-menu-left {
        display: flex;
        align-items: center;
        gap: 10px;
      }
      .popup-menu-logo {
        width: 32px;
        height: 32px;
        background: var(--primary);
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 15px;
        color: white;
        font-weight: 800;
      }
      .popup-menu-title {
        font-size: 13px;
        font-weight: 700;
        color: var(--text);
      }
      .popup-menu-sub {
        font-size: 10px;
        color: var(--text-muted);
      }
      .popup-rate-chip {
        display: flex;
        flex-direction: column;
        align-items: flex-end;
      }
      .popup-rate-chip .val {
        font-size: 16px;
        font-weight: 700;
        color: var(--sell);
        font-variant-numeric: tabular-nums;
      }
      .popup-rate-chip .lbl {
        font-size: 9px;
        color: var(--text-muted);
        text-transform: uppercase;
        letter-spacing: 0.4px;
      }

      .popup-body {
        padding: 14px;
      }
      .popup-date-row {
        font-size: 11px;
        color: var(--text-muted);
        margin-bottom: 10px;
      }
      .popup-date-row strong {
        color: var(--text);
      }

      .popup-rate-card {
        border-radius: 10px;
        padding: 12px 14px;
        margin-bottom: 10px;
      }
      .popup-rate-card.buy {
        background: var(--buy-lt);
        border: 1px solid var(--buy);
      }
      .popup-rate-card.sell {
        background: var(--sell-lt);
        border: 1px solid var(--sell);
      }
      .popup-card-label {
        font-size: 9px;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.6px;
        margin-bottom: 4px;
      }
      .popup-rate-card.buy .popup-card-label {
        color: var(--buy);
      }
      .popup-rate-card.sell .popup-card-label {
        color: var(--sell);
      }
      .popup-card-value {
        font-size: 22px;
        font-weight: 700;
        color: var(--text);
        font-variant-numeric: tabular-nums;
        letter-spacing: -0.5px;
      }
      .popup-card-value span {
        font-size: 11px;
        color: var(--text-muted);
        font-weight: 500;
        margin-left: 4px;
      }

      .popup-spread-row {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 11px;
        color: var(--text-muted);
        padding: 4px 0;
      }
      .popup-spread-row strong {
        color: var(--text);
        font-size: 12px;
      }

      @media (max-width: 900px) {
        .hero-inner {
          grid-template-columns: 1fr;
          gap: 48px;
        }
        .hero-visual {
          justify-content: flex-start;
        }
        .browser-shell {
          max-width: 380px;
        }
      }
      @media (max-width: 480px) {
        #hero {
          padding: 48px 0 40px;
        }
        .hero-ctas {
          flex-direction: column;
          align-items: stretch;
        }
        .hero-ctas .btn {
          justify-content: center;
          text-align: center;
        }
      }

      /* ── FEATURES ───────────────────────────────────────────────────────── */
      #features {
        background: var(--surface);
      }

      .features-header {
        margin-bottom: 52px;
      }

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

      .feature-card {
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 28px 24px;
        transition:
          box-shadow 0.2s,
          transform 0.2s;
      }
      .feature-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-3px);
      }

      .feature-icon {
        width: 48px;
        height: 48px;
        background: var(--primary-lt);
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 22px;
        margin-bottom: 16px;
      }

      .feature-title {
        font-size: 16px;
        font-weight: 700;
        color: var(--text);
        margin-bottom: 8px;
      }
      .feature-desc {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.6;
      }

      @media (max-width: 900px) {
        .features-grid {
          grid-template-columns: repeat(2, 1fr);
        }
      }
      @media (max-width: 560px) {
        .features-grid {
          grid-template-columns: 1fr;
        }
      }

      /* ── PRO ────────────────────────────────────────────────────────────── */
      #pro {
        background: var(--bg);
      }

      .pro-inner {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 60px;
        align-items: center;
      }

      .pro-features-list {
        list-style: none;
        margin-top: 28px;
      }
      .pro-features-list li {
        display: flex;
        align-items: flex-start;
        gap: 12px;
        padding: 9px 0;
        border-bottom: 1px solid var(--border);
        font-size: 15px;
        color: var(--text);
      }
      .pro-features-list li:last-child {
        border-bottom: none;
      }
      .check {
        width: 20px;
        height: 20px;
        background: var(--primary);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 11px;
        flex-shrink: 0;
        margin-top: 1px;
      }
      .pro-features-list .badge {
        margin-left: auto;
        font-size: 10px;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.4px;
        color: var(--amber);
        background: #fffbeb;
        padding: 2px 7px;
        border-radius: 4px;
        [data-theme="dark"] & {
          background: #2a1f00;
        }
      }
      [data-theme="dark"] .pro-features-list .badge {
        background: #2a1f00;
      }

      .pro-ctas {
        display: flex;
        gap: 12px;
        flex-wrap: wrap;
        margin-top: 32px;
      }

      /* Pro card mockup */
      .pro-visual {
        position: relative;
      }
      .pro-card-stack {
        position: relative;
      }

      .pro-card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 24px;
        box-shadow: var(--shadow-md);
      }
      .pro-card.locked {
        opacity: 0.45;
        filter: blur(1px);
        transform: translateY(10px) scale(0.97);
        position: relative;
      }
      .pro-card.unlocked {
        border: 2px solid var(--primary);
        position: relative;
        z-index: 2;
        margin-top: -60px;
      }
      .pro-card-badge {
        position: absolute;
        top: -12px;
        left: 50%;
        transform: translateX(-50%);
        background: var(--primary);
        color: white;
        font-size: 11px;
        font-weight: 700;
        padding: 4px 14px;
        border-radius: 20px;
        text-transform: uppercase;
        letter-spacing: 0.6px;
        white-space: nowrap;
      }
      .pro-card-title {
        font-size: 11px;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.6px;
        color: var(--text-muted);
        margin-bottom: 12px;
      }
      .pro-card-rate {
        font-size: 28px;
        font-weight: 800;
        color: var(--text);
        font-variant-numeric: tabular-nums;
      }
      .pro-card-rate span {
        font-size: 13px;
        color: var(--text-muted);
        font-weight: 500;
      }
      .pro-card-insight {
        margin-top: 12px;
        padding: 10px 12px;
        background: var(--primary-lt);
        border-radius: 8px;
        font-size: 12px;
        color: var(--primary);
        line-height: 1.5;
      }
      .pro-card-insight::before {
        content: "🧠 ";
      }

      @media (max-width: 900px) {
        .pro-inner {
          grid-template-columns: 1fr;
        }
        .pro-visual {
          display: none;
        }
      }

      /* ── AI ─────────────────────────────────────────────────────────────── */
      #ai {
        background: var(--bg-alt);
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
      }

      .ai-header {
        margin-bottom: 52px;
      }

      .ai-main-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        margin-bottom: 20px;
      }

      .ai-secondary-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
      }

      .ai-card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 28px 24px;
        position: relative;
        transition:
          box-shadow 0.2s,
          transform 0.2s;
      }
      .ai-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-2px);
      }
      .ai-card.featured {
        border-color: var(--primary);
        border-width: 1.5px;
      }
      .ai-card.featured::before {
        content: "AI";
        position: absolute;
        top: -10px;
        right: 16px;
        background: var(--primary);
        color: white;
        font-size: 10px;
        font-weight: 700;
        letter-spacing: 0.8px;
        padding: 3px 9px;
        border-radius: 20px;
        text-transform: uppercase;
      }

      .ai-icon {
        width: 48px;
        height: 48px;
        background: var(--primary-lt);
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 22px;
        margin-bottom: 16px;
      }
      .ai-card-title {
        font-size: 16px;
        font-weight: 700;
        color: var(--text);
        margin-bottom: 8px;
      }
      .ai-card-desc {
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.6;
      }

      .ai-secondary-grid .ai-card {
        padding: 20px;
      }
      .ai-secondary-grid .ai-icon {
        width: 40px;
        height: 40px;
        font-size: 18px;
        margin-bottom: 12px;
      }
      .ai-secondary-grid .ai-card-title {
        font-size: 14px;
      }
      .ai-secondary-grid .ai-card-desc {
        font-size: 13px;
      }

      .ai-disclaimer {
        margin-top: 28px;
        padding: 12px 16px;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        font-size: 12px;
        color: var(--text-muted);
        display: flex;
        align-items: center;
        gap: 8px;
      }

      @media (max-width: 900px) {
        .ai-main-grid {
          grid-template-columns: 1fr;
        }
      }
      @media (max-width: 700px) {
        .ai-secondary-grid {
          grid-template-columns: 1fr;
        }
      }

      /* ── PRICING ────────────────────────────────────────────────────────── */
      #pricing {
        background: var(--surface);
      }

      .pricing-toggle-wrap {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 14px;
        margin: 28px 0 48px;
      }
      .pricing-toggle-label {
        font-size: 14px;
        font-weight: 500;
        color: var(--text-muted);
      }
      .pricing-toggle-label.active {
        color: var(--primary);
        font-weight: 600;
      }
      .toggle-pill {
        position: relative;
        width: 48px;
        height: 26px;
        background: var(--border);
        border-radius: 13px;
        cursor: pointer;
        transition: background 0.2s;
      }
      .toggle-pill.on {
        background: var(--primary);
      }
      .toggle-pill::after {
        content: "";
        position: absolute;
        top: 3px;
        left: 3px;
        width: 20px;
        height: 20px;
        background: white;
        border-radius: 50%;
        transition: transform 0.2s;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
      }
      .toggle-pill.on::after {
        transform: translateX(22px);
      }
      .save-badge {
        font-size: 11px;
        font-weight: 700;
        color: white;
        background: var(--amber);
        padding: 2px 8px;
        border-radius: 20px;
      }

      .pricing-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
        align-items: start;
      }

      .pricing-card {
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 32px 28px;
        position: relative;
        transition: box-shadow 0.2s;
      }
      .pricing-card:hover {
        box-shadow: var(--shadow-md);
      }
      .pricing-card.popular {
        background: var(--surface);
        border: 2px solid var(--primary);
        box-shadow: var(--shadow-md);
      }
      .popular-badge {
        position: absolute;
        top: -13px;
        left: 50%;
        transform: translateX(-50%);
        background: var(--primary);
        color: white;
        font-size: 11px;
        font-weight: 700;
        letter-spacing: 0.5px;
        padding: 4px 16px;
        border-radius: 20px;
        text-transform: uppercase;
        white-space: nowrap;
      }

      .pricing-plan-name {
        font-size: 13px;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.7px;
        color: var(--text-muted);
        margin-bottom: 8px;
      }
      .pricing-price {
        font-size: 42px;
        font-weight: 800;
        color: var(--text);
        font-variant-numeric: tabular-nums;
        line-height: 1;
        margin-bottom: 4px;
      }
      .pricing-price sup {
        font-size: 20px;
        vertical-align: super;
        font-weight: 700;
      }
      .pricing-price sub {
        font-size: 14px;
        font-weight: 500;
        color: var(--text-muted);
      }
      .pricing-price-sub {
        font-size: 13px;
        color: var(--text-muted);
        margin-bottom: 6px;
      }
      .pricing-period {
        font-size: 12px;
        color: var(--text-light);
        margin-bottom: 24px;
      }

      .pricing-divider {
        height: 1px;
        background: var(--border);
        margin: 20px 0;
      }

      .pricing-features {
        list-style: none;
        margin-bottom: 28px;
      }
      .pricing-features li {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        font-size: 14px;
        color: var(--text);
        padding: 6px 0;
      }
      .pricing-features .check-sm {
        width: 18px;
        height: 18px;
        background: var(--primary-lt);
        color: var(--primary);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 10px;
        flex-shrink: 0;
        margin-top: 2px;
      }

      .pricing-cta {
        width: 100%;
        justify-content: center;
      }

      @media (max-width: 900px) {
        .pricing-grid {
          grid-template-columns: 1fr;
          max-width: 480px;
          margin: 0 auto;
        }
      }
      @media (max-width: 520px) {
        .pricing-grid {
          max-width: 100%;
        }
      }

      /* ── FAQ ────────────────────────────────────────────────────────────── */
      #faq {
        background: var(--bg);
      }

      .faq-grid {
        max-width: 760px;
        margin: 48px auto 0;
      }

      .faq-item {
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        margin-bottom: 10px;
        background: var(--surface);
        overflow: hidden;
      }

      .faq-question {
        width: 100%;
        background: none;
        border: none;
        padding: 18px 20px;
        font-family: var(--font);
        font-size: 15px;
        font-weight: 600;
        color: var(--text);
        text-align: left;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
        transition: background 0.15s;
      }
      .faq-question:hover {
        background: var(--bg);
      }
      .faq-chevron {
        width: 22px;
        height: 22px;
        border-radius: 50%;
        background: var(--border);
        color: var(--text-muted);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 13px;
        flex-shrink: 0;
        transition:
          transform 0.25s,
          background 0.15s;
      }
      .faq-item.open .faq-chevron {
        transform: rotate(180deg);
        background: var(--primary-lt);
        color: var(--primary);
      }

      .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition:
          max-height 0.3s ease,
          padding 0.3s;
      }
      .faq-item.open .faq-answer {
        max-height: 300px;
      }
      .faq-answer-inner {
        padding: 0 20px 18px;
        font-size: 14px;
        color: var(--text-muted);
        line-height: 1.7;
      }
      .faq-answer-inner a {
        color: var(--primary);
      }

      /* ── CONTACT ────────────────────────────────────────────────────────── */
      #contact {
        background: var(--surface);
      }

      .contact-inner {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 60px;
        align-items: start;
        margin-top: 48px;
      }

      .contact-form {
        display: flex;
        flex-direction: column;
        gap: 16px;
      }

      .form-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 14px;
      }

      .form-field {
        display: flex;
        flex-direction: column;
        gap: 6px;
      }
      .form-field label {
        font-size: 13px;
        font-weight: 600;
        color: var(--text);
      }
      .form-field input,
      .form-field select,
      .form-field textarea {
        padding: 11px 14px;
        font-family: var(--font);
        font-size: 14px;
        color: var(--text);
        background: var(--bg);
        border: 1.5px solid var(--border);
        border-radius: var(--radius-sm);
        transition: border-color 0.15s;
        resize: vertical;
      }
      .form-field input:focus,
      .form-field select:focus,
      .form-field textarea:focus {
        outline: none;
        border-color: var(--primary);
        background: var(--surface);
      }
      .form-field input::placeholder,
      .form-field textarea::placeholder {
        color: var(--text-light);
      }

      .form-submit {
        align-self: flex-start;
      }
      .form-note {
        font-size: 12px;
        color: var(--text-muted);
        display: flex;
        align-items: center;
        gap: 6px;
      }

      /* Contact details */
      .contact-details {
        padding-top: 8px;
      }
      .contact-details h3 {
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 6px;
      }
      .contact-details > p {
        font-size: 14px;
        color: var(--text-muted);
        margin-bottom: 24px;
        line-height: 1.6;
      }

      .contact-info-list {
        list-style: none;
        margin-bottom: 28px;
      }
      .contact-info-list li {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 10px 0;
        border-bottom: 1px solid var(--border);
        font-size: 14px;
      }
      .contact-info-list li:last-child {
        border-bottom: none;
      }
      .contact-info-icon {
        width: 36px;
        height: 36px;
        background: var(--primary-lt);
        border-radius: 9px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 16px;
        flex-shrink: 0;
      }
      .contact-info-list a {
        color: var(--primary);
        font-weight: 500;
      }

      .contact-biz-card {
        background: var(--bg);
        border: 1.5px solid var(--primary);
        border-radius: var(--radius);
        padding: 16px 18px;
      }
      .contact-biz-card p {
        font-size: 13px;
        color: var(--text-muted);
        line-height: 1.6;
      }
      .contact-biz-card strong {
        color: var(--primary);
      }

      @media (max-width: 800px) {
        .contact-inner {
          grid-template-columns: 1fr;
        }
        .form-row {
          grid-template-columns: 1fr;
        }
      }

      /* ── FOOTER ─────────────────────────────────────────────────────────── */
      footer {
        background: #1a1d23;
        color: #e8eaf0;
        padding: 52px 0 28px;
      }

      .footer-top {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr;
        gap: 48px;
        padding-bottom: 40px;
        border-bottom: 1px solid #2d3140;
        margin-bottom: 28px;
      }

      .footer-brand .nav-logo-icon {
        margin-bottom: 14px;
      }
      .footer-brand p {
        font-size: 13px;
        color: #8b92a5;
        line-height: 1.65;
        margin-top: 10px;
        max-width: 280px;
      }

      .footer-col h4 {
        font-size: 12px;
        font-weight: 700;
        text-transform: uppercase;
        letter-spacing: 0.7px;
        color: #8b92a5;
        margin-bottom: 16px;
      }

      .footer-links {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 10px;
      }
      .footer-links a {
        font-size: 14px;
        color: #9ca3af;
        text-decoration: none;
        transition: color 0.15s;
      }
      .footer-links a:hover {
        color: #e8eaf0;
      }

      .footer-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
      }
      .footer-bottom p {
        font-size: 12px;
        color: #6b7280;
        line-height: 1.6;
      }
      .footer-disclaimer {
        font-size: 11px;
        color: #4b5563;
        margin-top: 4px;
      }

      @media (max-width: 768px) {
        .footer-top {
          grid-template-columns: 1fr;
          gap: 32px;
        }
        .footer-bottom {
          flex-direction: column;
          align-items: flex-start;
        }
      }

      /* ── Browser buttons ────────────────────────────────────────────────── */
      .btn-chrome {
        background: #1a73e8;
        color: white;
        border-color: #1a73e8;
      }
      .btn-chrome:hover {
        background: #1557b0;
        border-color: #1557b0;
        text-decoration: none;
      }
      .btn-firefox {
        background: #e66000;
        color: white;
        border-color: #e66000;
      }
      .btn-firefox:hover {
        background: #c45400;
        border-color: #c45400;
        text-decoration: none;
      }

      .browser-compat {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-top: 16px;
        flex-wrap: wrap;
        font-size: 13px;
        color: var(--text-muted);
      }
      .browser-badge {
        display: inline-flex;
        align-items: center;
        gap: 5px;
        padding: 4px 10px;
        border-radius: 6px;
        font-size: 12px;
        font-weight: 600;
      }
      .browser-badge.chrome {
        background: #e8f0fe;
        color: #1a73e8;
      }
      .browser-badge.firefox {
        background: #fff0e6;
        color: #c45400;
      }
      [data-theme="dark"] .browser-badge.chrome {
        background: #1a2744;
        color: #7baaf7;
      }
      [data-theme="dark"] .browser-badge.firefox {
        background: #2d1500;
        color: #ff9955;
      }

      /* ── Download section ───────────────────────────────────────────────── */
      #download {
        background: var(--bg-alt);
        border-top: 1px solid var(--border);
        border-bottom: 1px solid var(--border);
      }

      .download-grid {
        display: flex;
        gap: 24px;
        justify-content: center;
        margin-top: 48px;
        flex-wrap: wrap;
      }
      .store-card {
        background: var(--surface);
        border: 2px solid var(--border);
        border-radius: var(--radius-lg);
        padding: 36px 44px;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 10px;
        min-width: 240px;
        text-decoration: none;
        transition:
          box-shadow 0.2s,
          transform 0.2s;
      }
      .store-card:hover {
        box-shadow: var(--shadow-md);
        transform: translateY(-3px);
        text-decoration: none;
      }
      .store-card.chrome {
        border-color: #1a73e8;
      }
      .store-card.firefox {
        border-color: #e66000;
      }
      .store-icon {
        font-size: 44px;
        line-height: 1;
      }
      .store-name {
        font-size: 17px;
        font-weight: 700;
        color: var(--text);
      }
      .store-sub {
        font-size: 12px;
        color: var(--text-muted);
      }
      .store-btn {
        margin-top: 6px;
        padding: 9px 20px;
        border-radius: 8px;
        font-size: 13px;
        font-weight: 700;
        color: white;
      }
      .store-card.chrome .store-btn {
        background: #1a73e8;
      }
      .store-card.firefox .store-btn {
        background: #e66000;
      }
      .download-note {
        margin-top: 24px;
        font-size: 12px;
        color: var(--text-muted);
      }
      @media (max-width: 560px) {
        .store-card {
          min-width: 100%;
          padding: 28px 24px;
        }
      }

      /* ── Mobile: global ────────────────────────────────────────────────── */
      @media (max-width: 768px) {
        section {
          padding: 60px 0;
        }
        footer {
          padding: 40px 0 20px;
        }
      }

      /* Hero CTA wrap before they overflow (3 buttons ~508px wide) */
      @media (max-width: 640px) {
        .hero-ctas {
          flex-wrap: wrap;
        }
      }

      @media (max-width: 480px) {
        section {
          padding: 44px 0;
        }
        .container {
          padding: 0 16px;
        }

        /* Typography */
        p.section-sub {
          font-size: 15px;
        }
        .hero-sub {
          font-size: 16px;
          margin-bottom: 24px;
        }
        .hero-badge {
          font-size: 11px;
        }

        /* Hero visual */
        .browser-shell {
          max-width: 100%;
        }
        .popup-card-value {
          font-size: 18px;
        }

        /* Feature / AI cards */
        .feature-card {
          padding: 20px 16px;
        }
        .ai-card {
          padding: 20px 16px;
        }
        .ai-secondary-grid .ai-card {
          padding: 16px;
        }

        /* Pro */
        .pro-ctas {
          flex-direction: column;
          align-items: stretch;
        }
        .pro-ctas .btn {
          justify-content: center;
        }
        .pro-features-list li {
          font-size: 14px;
        }

        /* Pricing */
        .pricing-card {
          padding: 24px 18px;
        }
        .pricing-price {
          font-size: 36px;
        }
        .pricing-toggle-wrap {
          gap: 8px;
        }
        .pricing-grid {
          max-width: 100%;
        }

        /* Download */
        .store-card {
          padding: 24px 16px;
        }

        /* FAQ */
        .faq-question {
          font-size: 14px;
          padding: 14px 16px;
        }
        .faq-answer-inner {
          padding: 0 16px 14px;
          font-size: 13px;
        }
        .faq-grid {
          margin-top: 32px;
        }

        /* Contact */
        .contact-details h3 {
          font-size: 16px;
        }

        /* Prevent iOS Safari auto-zoom on input focus (requires ≥16px) */
        .form-field input,
        .form-field select,
        .form-field textarea {
          font-size: 16px;
        }

        /* Footer */
        .footer-top {
          gap: 24px;
        }
        footer {
          padding: 36px 0 20px;
        }
      }

      /* Very small screens */
      @media (max-width: 360px) {
        .container {
          padding: 0 12px;
        }
        .btn {
          padding: 10px 16px;
          font-size: 13px;
        }
        h2.section-heading {
          font-size: 26px;
        }
      }

      /* ── Utilities ──────────────────────────────────────────────────────── */
      .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        border: 0;
      }