:root {
        color-scheme: light dark;
        --paper: #f5f3ec;
        --surface: #fffdf7;
        --ink: #172019;
        --muted: #526057;
        --faint: #737c76;
        --line: #c9ccc5;
        --line-strong: #8f9992;
        --accent: #8b2f24;
        --accent-ink: #fffaf6;
        --accent-soft: #f0e2dc;
        --danger: #8b2f24;
        --danger-soft: #f3ddd8;
        --serif: "Libre Caslon Display", Georgia, serif;
        --sans: "IBM Plex Sans", "Helvetica Neue", sans-serif;
        --mono: "IBM Plex Mono", ui-monospace, monospace;
      }

      @media (prefers-color-scheme: dark) {
        :root {
          --paper: #111511;
          --surface: #171d18;
          --ink: #f1efe8;
          --muted: #b8beb8;
          --faint: #929a94;
          --line: #39413b;
          --line-strong: #677169;
          --accent: #e38f7e;
          --accent-ink: #21110e;
          --accent-soft: #40241f;
          --danger: #ef9c8c;
          --danger-soft: #44241f;
        }
      }

      * { box-sizing: border-box; }
      html { scroll-behavior: smooth; scroll-padding-top: 80px; }
      body {
        margin: 0;
        min-width: 320px;
        min-height: 100vh;
        background: var(--paper);
        color: var(--ink);
        font-family: var(--sans);
        font-size: 17px;
        line-height: 1.62;
        -webkit-font-smoothing: antialiased;
      }
      button, input, select { font: inherit; }
      button { color: inherit; }
      a { color: inherit; }
      p { text-wrap: pretty; text-align: left; }
      section, article, form, label, input, select, button, table { text-align: left; }
      .tabular, .amount, .receipt-value, .receipt-line span:last-child,
      .comparison-table td:nth-child(3), .comparison-table td:nth-child(4),
      .range-value, .range-copy, .scale-range, .scale-price,
      .normalization, .fineprint, .verdict-line, .estimate-price,
      .explorer-price, .chat-cost, .chat-platform-cost { font-variant-numeric: tabular-nums; }

      .ad-slot { width: 100%; max-width: 100%; overflow: hidden; }
      .ad-slot:empty { display: none; }
      .page { width: min(1240px, calc(100% - 64px)); margin: 0 auto; padding: 64px 0 88px; }

      .intro {
        display: grid;
        grid-template-columns: minmax(0, 1.62fr) minmax(280px, .72fr);
        gap: clamp(44px, 8vw, 128px);
        align-items: end;
        padding-bottom: 38px;
      }
      .kicker, .micro, .result-label, .field-index, .nav-label {
        font-family: var(--mono);
        font-size: 10px;
        line-height: 1.45;
        letter-spacing: .13em;
        text-transform: uppercase;
      }
      .kicker { color: var(--accent); margin: 0 0 17px; font-weight: 500; }
      h1 {
        margin: 0;
        max-width: 900px;
        font-family: var(--serif);
        font-weight: 400;
        font-size: clamp(52px, 7.4vw, 94px);
        line-height: .98;
        letter-spacing: -.046em;
        text-wrap: balance;
      }
      .dek { margin: 0; max-width: 37ch; color: var(--muted); font-size: 19px; line-height: 1.58; }
      .dek-mobile { display: none; }
      .privacy-note { display: inline-block; margin-top: 21px; color: var(--faint); }

      .spot-kicker {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        margin-bottom: 17px;
      }
      .spot-kicker .kicker { margin: 0; }
      .spot-art {
        width: clamp(200px, 21vw, 260px);
        flex: 0 1 260px;
        margin: 0;
      }
      .spot-art img { display: block; width: 100%; height: auto; object-fit: contain; mix-blend-mode: multiply; }
      .hero-art { width: 100%; margin: 0 0 13px; overflow: hidden; }
      .hero-art img { display: block; width: 100%; height: auto; object-fit: contain; }
      @media (prefers-color-scheme: dark) {
        .spot-art img { filter: brightness(.7) saturate(.74); mix-blend-mode: normal; }
        .hero-art img { filter: brightness(.72) saturate(.78); }
      }

      .section-nav {
        position: sticky;
        top: 0;
        z-index: 5;
        display: grid;
        grid-template-columns: auto 1fr;
        gap: 26px;
        align-items: start;
        padding: 15px 0 14px;
        border-bottom: 1px solid var(--line-strong);
        background: var(--paper);
      }
      .nav-label { color: var(--faint); padding-top: 3px; }
      .section-nav ul { display: flex; flex-wrap: wrap; gap: 4px 22px; margin: 0; padding: 0; list-style: none; }
      .section-nav a { color: var(--muted); font-size: 14px; line-height: 1.45; text-decoration: none; }
      .section-nav a:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; }

      .workspace { display: grid; grid-template-columns: minmax(330px, .75fr) minmax(0, 1.25fr); min-height: 620px; }
      .input-panel { padding: 62px clamp(36px, 5.5vw, 78px) 28px 0; border-right: 1px solid var(--line-strong); }
      .output-panel { padding: 62px 0 28px clamp(36px, 5.5vw, 78px); }
      h2 {
        margin: 0;
        font-family: var(--serif);
        font-size: clamp(36px, 4.4vw, 58px);
        line-height: 1.04;
        font-weight: 400;
        letter-spacing: -.034em;
        text-wrap: balance;
      }
      .section-note { margin: 13px 0 35px; color: var(--muted); max-width: 58ch; }

      .scenario-picker { margin: 0 0 30px; padding: 21px 0 23px; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
      .scenario-intro { margin: 0 0 18px; color: var(--muted); font-size: 14px; }
      .select-grid { display: grid; grid-template-columns: 1.18fr .82fr; gap: 22px; align-items: end; }
      .select-control { display: grid; grid-template-rows: auto 1fr; align-self: stretch; }
      .select-control label { display: block; margin-bottom: 7px; color: var(--ink); font-weight: 600; }
      .select-control select {
        width: 100%; min-height: 46px; border: 0; border-bottom: 1px solid var(--line-strong); border-radius: 0;
        padding: 8px 30px 8px 0; color: var(--ink); background: transparent; cursor: pointer; outline: none;
      }
      .select-control select:focus { border-bottom-color: var(--accent); }
      .scenario-summary { margin: 15px 0 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
      .scenario-summary strong { color: var(--ink); font-weight: 600; }

      .preset-picker { margin: 0 0 28px; padding: 20px 0 22px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
      .preset-label { margin: 0 0 4px; color: var(--ink); font-weight: 600; }
      .preset-note { margin: 0 0 13px; color: var(--muted); font-size: 13px; }
      .presets { display: grid; gap: 2px; }
      .preset-button {
        appearance: none;
        width: 100%;
        display: grid;
        grid-template-columns: minmax(110px, .65fr) minmax(0, 1.35fr);
        gap: 14px;
        align-items: baseline;
        border: 0;
        border-bottom: 1px solid transparent;
        border-radius: 0;
        padding: 9px 4px;
        background: transparent;
        text-align: left;
        cursor: pointer;
      }
      .preset-button:hover, .preset-button[aria-pressed="true"] { border-bottom-color: var(--accent); color: var(--accent); }
      .preset-name { font-family: var(--serif); font-size: 18px; }
      .preset-values { color: var(--muted); font-family: var(--mono); font-size: 10px; line-height: 1.5; text-transform: uppercase; }
      .preset-button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

      .field { display: grid; grid-template-columns: 30px minmax(0, 1fr); gap: 14px; padding: 23px 0 25px; border-top: 1px solid var(--line); }
      .field:last-of-type { border-bottom: 1px solid var(--line); }
      .field-index { color: var(--faint); padding-top: 8px; }
      .field > div { display: grid; grid-template-columns: minmax(0, 1fr) minmax(190px, .9fr); column-gap: 22px; align-items: end; }
      .field label { display: block; margin: 0; padding-bottom: 9px; font-weight: 600; color: var(--ink); line-height: 1.35; }
      .number-wrap { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 9px; align-items: center; border-bottom: 1px solid var(--line-strong); }
      .number-wrap input {
        width: 100%; min-width: 0; border: 0; border-radius: 0;
        padding: 3px 0 9px; color: var(--ink); background: transparent;
        font-family: var(--mono); font-size: clamp(25px, 2.7vw, 32px); font-variant-numeric: tabular-nums;
        outline: none; -moz-appearance: textfield;
      }
      .number-wrap input::-webkit-outer-spin-button, .number-wrap input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
      .number-wrap:focus-within { border-bottom-color: var(--accent); }
      .number-wrap input::placeholder { color: var(--faint); opacity: .55; }
      .unit { color: var(--faint); font-family: var(--mono); font-size: 9px; letter-spacing: .06em; text-transform: uppercase; pointer-events: none; white-space: nowrap; }
      .field-help { grid-column: 1 / -1; margin: 9px 0 0; color: var(--muted); font-size: 14px; }

      .actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 29px; }
      .button {
        appearance: none; border: 1px solid var(--accent); border-radius: 0; padding: 12px 18px 11px;
        background: var(--accent); color: var(--accent-ink); font-family: var(--mono); font-size: 11px;
        font-weight: 500; letter-spacing: .08em; text-transform: uppercase; cursor: pointer;
      }
      .button.secondary { background: transparent; color: var(--accent); }
      .button:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }
      .button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
      .button:disabled { cursor: not-allowed; opacity: .45; }
      .form-error { min-height: 22px; margin: 12px 0 0; color: var(--danger); font-size: 14px; }

      .empty-state { display: grid; place-items: center start; min-height: 390px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 50px 0; }
      .empty-state p { margin: 0; color: var(--muted); max-width: 34ch; font-family: var(--serif); font-size: 24px; line-height: 1.35; }
      .empty-rule { display: block; width: 76px; border-top: 2px solid var(--accent); margin-bottom: 22px; }
      .results[hidden], .empty-state[hidden] { display: none; }
      .result-list { border-top: 1px solid var(--line-strong); }
      .result-row { position: relative; display: grid; grid-template-columns: minmax(110px, .64fr) minmax(170px, 1fr) minmax(118px, auto); gap: 24px; align-items: start; padding: 26px 0 28px; border-bottom: 1px solid var(--line); }
      .result-row > * { min-width: 0; }
      .result-row.best::before { content: ""; position: absolute; left: calc(-1 * clamp(36px, 5.5vw, 78px)); top: 0; bottom: 0; width: 2px; background: var(--accent); }
      .platform-name { margin: 4px 0 0; font-family: var(--serif); font-size: 28px; line-height: 1.08; font-weight: 400; }
      .plan-name { margin: 3px 0; font-weight: 600; line-height: 1.35; }
      .coverage { margin: 0; color: var(--muted); font-size: 14px; }
      .result-cost { min-width: 160px; text-align: right; }
      .amount { display: block; font-family: var(--mono); font-size: clamp(21px, 2.35vw, 31px); line-height: 1.08; letter-spacing: -.04em; white-space: normal; font-variant-numeric: tabular-nums; }
      .period { margin-top: 6px; color: var(--muted); font-family: var(--mono); font-size: 10px; text-transform: uppercase; }
      .badges { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
      .badge { display: inline-block; border: 1px solid var(--line-strong); padding: 3px 6px 2px; color: var(--muted); background: transparent; font-family: var(--mono); font-size: 9px; line-height: 1.4; letter-spacing: .08em; text-transform: uppercase; }
      .badge.best { color: var(--accent); border-color: var(--accent); }
      .badge.risk { color: var(--danger); border-color: var(--danger); }

      .comparison { margin-top: 42px; padding-top: 31px; border-top: 1px solid var(--line-strong); }
      .comparison-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; margin-bottom: 15px; }
      .comparison h3, .receipt h3 { margin: 0; font-family: var(--serif); font-size: 29px; line-height: 1.15; font-weight: 400; letter-spacing: -.025em; }
      .comparison-note { margin: 0; color: var(--muted); font-size: 13px; text-align: left; max-width: 38ch; }
      .comparison-table { width: 100%; border-collapse: collapse; table-layout: fixed; }
      .comparison-table th { padding: 10px 9px 10px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line-strong); color: var(--faint); font-family: var(--mono); font-size: 9px; line-height: 1.45; letter-spacing: .075em; text-transform: uppercase; text-align: left; vertical-align: bottom; }
      .comparison-table td { padding: 15px 9px 15px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
      .comparison-table th:nth-child(3), .comparison-table th:nth-child(4), .comparison-table td:nth-child(3), .comparison-table td:nth-child(4) { text-align: right; padding-right: 0; }
      .comparison-table td:first-child { font-family: var(--serif); font-size: 20px; }
      .comparison-table td:nth-child(3), .comparison-table td:nth-child(4) { font-family: var(--mono); font-size: 13px; }
      .comparison-detail { display: block; margin-top: 3px; color: var(--muted); font-size: 12px; }

      .receipt { margin-top: 44px; background: var(--surface); border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); padding: clamp(26px, 4vw, 42px) 0; }
      .receipt-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 22px; padding-bottom: 23px; border-bottom: 1px dashed var(--line-strong); }
      .snapshot { color: var(--accent); white-space: nowrap; }
      .receipt-context { margin: 17px 0 -5px; color: var(--muted); font-size: 13px; }
      .receipt-workload { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px 24px; padding: 21px 0; border-bottom: 1px dashed var(--line-strong); }
      .receipt-metric { min-width: 0; }
      .receipt-value { display: block; margin-top: 4px; font-family: var(--mono); font-size: 19px; }
      .receipt-prices { padding: 13px 0; border-bottom: 1px dashed var(--line-strong); }
      .receipt-line { display: grid; grid-template-columns: minmax(72px, .42fr) minmax(0, 1fr) minmax(112px, auto); gap: 16px; align-items: baseline; padding: 7px 0; }
      .receipt-platform { font-family: var(--serif); font-size: 18px; }
      .receipt-plan { color: var(--muted); }
      .receipt-price { font-family: var(--mono); text-align: right; white-space: nowrap; }
      .receipt-lowest { margin: 20px 0 0; color: var(--accent); font-family: var(--serif); font-size: 23px; }
      .receipt-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 13px; margin-top: 20px; }
      .copy-status { min-height: 20px; color: var(--accent); font-size: 14px; }

      .editorial-section { margin-top: 96px; padding-top: 42px; border-top: 1px solid var(--line-strong); }
      .section-heading { display: grid; grid-template-columns: minmax(280px, .92fr) minmax(0, 1.08fr); gap: clamp(42px, 8vw, 120px); align-items: end; margin-bottom: 37px; }
      .section-heading .section-note { margin: 0; max-width: 58ch; }
      .product-guide, .llm-alternatives, .break-even { margin-top: 96px; padding-top: 42px; border-top: 1px solid var(--line-strong); }
      .guide-heading, .llm-heading, .break-even-heading { display: grid; grid-template-columns: minmax(280px, .92fr) minmax(0, 1.08fr); gap: clamp(42px, 8vw, 120px); align-items: end; margin-bottom: 37px; }
      .guide-heading .section-note, .llm-heading .section-note, .break-even-heading .section-note { margin: 0; }

      .guide-list, .llm-list, .range-list { border-top: 1px solid var(--line-strong); }
      .guide-item { display: grid; grid-template-columns: minmax(160px, .58fr) 1fr 1fr; gap: clamp(28px, 4.5vw, 64px); padding: 34px 0 36px; border-bottom: 1px solid var(--line); }
      .guide-platform, .range-platform { margin: 0; font-family: var(--serif); font-size: clamp(31px, 3.5vw, 43px); line-height: 1.04; font-weight: 400; letter-spacing: -.028em; }
      .guide-copy h3, .llm-copy h3 { margin: 0 0 8px; color: var(--accent); font-family: var(--mono); font-size: 10px; line-height: 1.45; font-weight: 500; letter-spacing: .105em; text-transform: uppercase; }
      .guide-copy p, .llm-copy p { margin: 0; color: var(--muted); max-width: 46ch; }

      .llm-item { display: grid; grid-template-columns: minmax(190px, .72fr) repeat(3, 1fr); gap: clamp(24px, 3.8vw, 50px); padding: 34px 0 37px; border-bottom: 1px solid var(--line); }
      .llm-product h3 { margin: 0 0 10px; font-family: var(--serif); font-size: clamp(29px, 3vw, 38px); line-height: 1.03; font-weight: 400; letter-spacing: -.028em; }
      .llm-meta { margin: 0; color: var(--faint); font-family: var(--mono); font-size: 10px; line-height: 1.6; letter-spacing: .035em; }
      .llm-rule, .normalization { display: grid; grid-template-columns: minmax(280px, .92fr) minmax(0, 1.08fr); gap: clamp(42px, 8vw, 120px); margin-top: 34px; }
      .llm-rule h3, .normalization h3 { margin: 0; font-family: var(--serif); font-size: 29px; line-height: 1.18; font-weight: 400; }
      .llm-rule p { margin: 0; color: var(--muted); }
      .llm-rule strong, .normalization strong, .assumptions strong { color: var(--ink); font-weight: 600; }

      .range-row { display: grid; grid-template-columns: minmax(160px, .58fr) minmax(180px, .7fr) 1.28fr; gap: clamp(28px, 4.5vw, 64px); align-items: baseline; padding: 31px 0 33px; border-bottom: 1px solid var(--line); }
      .range-value { margin: 0; color: var(--accent); font-family: var(--mono); font-size: 13px; line-height: 1.5; }
      .range-copy { margin: 0; color: var(--muted); }
      .range-scale { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); margin-top: 34px; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); }
      .scale-segment { padding: 17px 17px 19px 0; }
      .scale-segment + .scale-segment { padding-left: 17px; border-left: 1px solid var(--line); }
      .scale-range { display: block; color: var(--accent); font-family: var(--mono); font-size: 12px; }
      .scale-winner { display: block; margin-top: 6px; font-family: var(--serif); font-size: 21px; }
      .scale-price { display: block; margin-top: 3px; color: var(--muted); font-size: 13px; }
      .normalization ul, .assumptions, .provenance-list { margin: 0; padding: 0; list-style: none; }
      .normalization li, .assumptions li, .provenance-list li { padding: 11px 0 12px; border-top: 1px solid var(--line); color: var(--muted); }
      .normalization li:first-child, .assumptions li:first-child, .provenance-list li:first-child { border-top: 0; padding-top: 0; }

      .notes, .pricing-notes { display: grid; grid-template-columns: minmax(280px, .92fr) minmax(0, 1.08fr); gap: clamp(42px, 8vw, 120px); margin-top: 96px; padding-top: 42px; border-top: 1px solid var(--line-strong); }
      .notes h2, .pricing-notes h2 { font-size: clamp(34px, 4vw, 50px); }
      .fineprint { margin: 28px 0 0; color: var(--muted); font-size: 15px; max-width: 68ch; }
      .provenance-list sup { display: inline-block; min-width: 24px; color: var(--accent); font-family: var(--mono); font-size: 10px; vertical-align: baseline; }
      .provenance-list a { color: var(--accent); text-underline-offset: 3px; }
      .provenance-title { margin: 0 0 15px; font-family: var(--serif); font-size: 25px; font-weight: 400; }

      .matrix-table { width: 100%; border-collapse: collapse; table-layout: fixed; border-top: 1px solid var(--line-strong); }
      .matrix-table th { padding: 13px 12px 13px 0; border-bottom: 1px solid var(--line-strong); color: var(--faint); font-family: var(--mono); font-size: 9px; line-height: 1.45; letter-spacing: .07em; text-transform: uppercase; text-align: left; vertical-align: bottom; }
      .matrix-table td { padding: 20px 12px 22px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 13px; line-height: 1.52; vertical-align: top; }
      .matrix-table th:last-child, .matrix-table td:last-child { padding-right: 0; }
      .matrix-table th:first-child, .matrix-table td:first-child { width: 10%; }
      .matrix-table td:first-child { color: var(--ink); font-family: var(--serif); font-size: 23px; line-height: 1.1; }
      .matrix-table strong { color: var(--ink); font-weight: 600; }
      .matrix-price { display: block; margin-bottom: 6px; font-family: var(--mono); font-size: 11px; color: var(--ink); }
      .matrix-price:last-child { margin-bottom: 0; }

      .switch-list { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(34px, 6vw, 84px); border-top: 1px solid var(--line-strong); }
      .switch-item { padding: 29px 0 8px; }
      .switch-item h3 { margin: 0 0 16px; font-family: var(--serif); font-size: clamp(28px, 3vw, 38px); line-height: 1.08; font-weight: 400; letter-spacing: -.025em; }
      .switch-item p { margin: 0 0 14px; color: var(--muted); }
      .switch-math { padding-top: 14px; border-top: 1px solid var(--line); color: var(--ink) !important; font-family: var(--mono); font-size: 12px; line-height: 1.65; font-variant-numeric: tabular-nums; }
      .switch-caveat { margin: 28px 0 0; color: var(--muted); font-size: 14px; }

      .faq-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 clamp(42px, 8vw, 120px); margin: 0; border-top: 1px solid var(--line-strong); }
      .faq-item { padding: 25px 0 27px; border-bottom: 1px solid var(--line); }
      .faq-item dt { margin: 0 0 9px; font-family: var(--serif); font-size: 23px; line-height: 1.2; }
      .faq-item dd { margin: 0; color: var(--muted); }

      .break-even-explorer { margin: 0 0 42px; padding: 28px 0 31px; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); }
      .explorer-grid { display: grid; grid-template-columns: minmax(230px, .72fr) minmax(0, 1.28fr); gap: clamp(36px, 7vw, 92px); align-items: start; }
      .explorer-control label { display: block; margin-bottom: 11px; font-weight: 600; }
      .explorer-number { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px; align-items: end; border-bottom: 1px solid var(--line-strong); }
      .explorer-number input { width: 100%; min-width: 0; border: 0; padding: 3px 0 8px; color: var(--ink); background: transparent; font-family: var(--mono); font-size: 30px; font-variant-numeric: tabular-nums; outline: none; -moz-appearance: textfield; }
      .explorer-number input::-webkit-outer-spin-button, .explorer-number input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
      .explorer-number:focus-within { border-bottom-color: var(--accent); }
      .explorer-slider { width: 100%; margin: 18px 0 0; accent-color: var(--accent); }
      .explorer-caption { margin: 9px 0 0; color: var(--muted); font-size: 12px; }
      .explorer-result h3 { margin: 0 0 14px; font-family: var(--serif); font-size: clamp(26px, 3vw, 36px); line-height: 1.16; font-weight: 400; }
      .explorer-result h3 strong { color: var(--accent); font-weight: 400; }
      .explorer-platforms { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
      .explorer-platforms li { display: grid; grid-template-columns: minmax(74px, .36fr) minmax(0, 1fr) auto; gap: 14px; padding: 10px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
      .explorer-platforms strong { font-family: var(--serif); font-size: 18px; font-weight: 400; }
      .explorer-plan { color: var(--muted); font-size: 13px; }
      .explorer-price { color: var(--accent); font-family: var(--mono); font-size: 12px; text-align: right; white-space: nowrap; }

      .timeline { border-top: 1px solid var(--line-strong); }
      .timeline-entry { display: grid; grid-template-columns: minmax(150px, .42fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 82px); padding: 30px 0 34px; border-bottom: 1px solid var(--line); }
      .timeline-date { margin: 0; color: var(--accent); font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: .045em; }
      .timeline-entry h3 { margin: 4px 0 13px; font-family: var(--serif); font-size: 28px; line-height: 1.16; font-weight: 400; }
      .timeline-entry ul { margin: 0; padding: 0; list-style: none; }
      .timeline-entry li { padding: 10px 0; border-top: 1px solid var(--line); color: var(--muted); }
      .timeline-entry li:first-child { border-top: 0; padding-top: 0; }
      .timeline-entry strong { color: var(--ink); }
      .timeline-status { display: inline-block; margin-left: 8px; color: var(--accent); font-family: var(--mono); font-size: 9px; letter-spacing: .07em; text-transform: uppercase; white-space: nowrap; }

      .learn-list { margin: 0; border-top: 1px solid var(--line-strong); }
      .learn-item { display: grid; grid-template-columns: minmax(190px, .42fr) minmax(0, 1.58fr); gap: clamp(32px, 6vw, 82px); padding: 29px 0 32px; border-bottom: 1px solid var(--line); }
      .learn-item dt { margin: 0; font-family: var(--serif); font-size: clamp(24px, 2.5vw, 31px); line-height: 1.12; }
      .learn-item dd { margin: 0; max-width: 72ch; }
      .learn-definition { margin: 0 0 8px; color: var(--ink); font-weight: 600; }
      .learn-context { margin: 0; color: var(--muted); }
      .learn-context a { color: var(--accent); text-underline-offset: 3px; }

      .glossary-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0 clamp(42px, 8vw, 120px); margin: 0; border-top: 1px solid var(--line-strong); }
      .glossary-item { padding: 24px 0 26px; border-bottom: 1px solid var(--line); }
      .glossary-item dt { margin: 0 0 8px; font-family: var(--serif); font-size: 23px; line-height: 1.2; }
      .glossary-item dd { margin: 0; color: var(--muted); }

      .source-ledger { margin-top: 34px; padding-top: 28px; border-top: 1px solid var(--line-strong); }
      .source-ledger h3 { margin: 0 0 17px; font-family: var(--serif); font-size: 28px; line-height: 1.18; font-weight: 400; }
      .source-ledger-list { margin: 0; padding: 0; list-style: none; }
      .source-ledger-list li { display: grid; grid-template-columns: minmax(80px, .28fr) minmax(0, 1fr); gap: 18px; padding: 13px 0 15px; border-top: 1px solid var(--line); color: var(--muted); }
      .source-ledger-list li:first-child { border-top: 0; }
      .source-ledger-list strong { color: var(--ink); }
      .source-ledger-list a { color: var(--accent); text-underline-offset: 3px; }
      .source-date { font-family: var(--mono); font-size: 10px; line-height: 1.55; letter-spacing: .045em; text-transform: uppercase; }

      .alerts-layout { display: grid; grid-template-columns: minmax(280px, .92fr) minmax(0, 1.08fr); gap: clamp(42px, 8vw, 120px); align-items: end; }
      .alert-form { padding-top: 4px; }
      .alert-form label { display: block; margin-bottom: 10px; font-weight: 600; }
      .alert-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px; align-items: end; }
      .alert-form input[type="email"] { width: 100%; min-width: 0; border: 0; border-bottom: 1px solid var(--line-strong); border-radius: 0; padding: 10px 0 11px; color: var(--ink); background: transparent; outline: none; }
      .alert-form input[type="email"]:focus { border-bottom-color: var(--accent); }
      .alert-form input[type="email"]::placeholder { color: var(--faint); }
      .alert-note, .alert-status { margin: 11px 0 0; color: var(--muted); font-size: 13px; }
      .alert-status { min-height: 21px; color: var(--accent); }

      .chatbot-panel {
        display: grid;
        grid-template-columns: minmax(280px, .72fr) minmax(0, 1.28fr);
        gap: clamp(42px, 8vw, 120px);
        margin-top: 56px;
        padding: 42px 0 48px;
        border-top: 1px solid var(--line-strong);
        border-bottom: 1px solid var(--line-strong);
      }
      .chatbot-intro h2 { max-width: 10ch; }
      .chatbot-intro .section-note { margin-bottom: 0; }
      .chat-modes { display: flex; gap: 24px; margin: 0 0 23px; border-bottom: 1px solid var(--line); }
      .chat-mode {
        appearance: none;
        position: relative;
        border: 0;
        border-radius: 0;
        padding: 0 0 11px;
        background: transparent;
        color: var(--muted);
        font-family: var(--mono);
        font-size: 10px;
        line-height: 1.45;
        letter-spacing: .08em;
        text-transform: uppercase;
        cursor: pointer;
      }
      .chat-mode[aria-selected="true"] { color: var(--accent); }
      .chat-mode[aria-selected="true"]::after { content: ""; position: absolute; right: 0; bottom: -1px; left: 0; border-bottom: 2px solid var(--accent); }
      .chat-mode:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
      .chat-availability { margin: 0 0 22px; padding: 14px 0 15px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); color: var(--muted); font-size: 14px; }
      .chat-availability strong { display: block; margin-bottom: 2px; color: var(--accent); font-family: var(--mono); font-size: 10px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; }
      .chat-thread { display: grid; gap: 0; margin-bottom: 22px; border-top: 1px solid var(--line); }
      .chat-thread:empty { display: none; }
      .chat-message { display: grid; grid-template-columns: 74px minmax(0, 1fr); gap: 18px; padding: 17px 0 18px; border-bottom: 1px solid var(--line); }
      .chat-speaker { padding-top: 3px; color: var(--faint); font-family: var(--mono); font-size: 9px; line-height: 1.45; letter-spacing: .08em; text-transform: uppercase; }
      .chat-message[data-speaker="assistant"] .chat-speaker { color: var(--accent); }
      .chat-message-body > :first-child { margin-top: 0; }
      .chat-message-body > :last-child { margin-bottom: 0; }
      .chat-message-body p { margin: 0 0 11px; }
      .chat-recommendation-head { display: flex; align-items: baseline; justify-content: space-between; gap: 18px; margin-bottom: 14px; }
      .chat-recommendation-head h3 { margin: 0; font-family: var(--serif); font-size: 27px; line-height: 1.12; font-weight: 400; }
      .chat-cost { color: var(--accent); font-family: var(--mono); font-size: 13px; white-space: nowrap; }
      .chat-comparison { margin: 0 0 15px; padding: 0; list-style: none; border-top: 1px solid var(--line); }
      .chat-comparison li { display: grid; grid-template-columns: minmax(72px, .38fr) minmax(0, 1fr) auto; gap: 14px; padding: 9px 0 10px; border-bottom: 1px solid var(--line); align-items: baseline; }
      .chat-comparison strong { font-family: var(--serif); font-size: 18px; font-weight: 400; }
      .chat-plan { color: var(--muted); font-size: 13px; }
      .chat-platform-cost { color: var(--accent); font-family: var(--mono); font-size: 12px; text-align: right; white-space: nowrap; }
      .chat-reasons { margin: 0; padding: 0; list-style: none; }
      .chat-reasons li { position: relative; margin-top: 9px; padding-left: 18px; color: var(--muted); }
      .chat-reasons li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }
      .chat-assumptions { margin-top: 14px !important; color: var(--faint); font-size: 12px; }
      .chat-form label { display: block; margin-bottom: 9px; font-weight: 600; }
      .chat-form textarea {
        display: block;
        width: 100%;
        min-height: 112px;
        resize: vertical;
        border: 0;
        border-top: 1px solid var(--line-strong);
        border-bottom: 1px solid var(--line-strong);
        border-radius: 0;
        padding: 13px 0 14px;
        color: var(--ink);
        background: transparent;
        line-height: 1.55;
        outline: none;
      }
      .chat-form textarea:focus { border-bottom-color: var(--accent); }
      .chat-form textarea::placeholder { color: var(--faint); opacity: .82; }
      .chat-form textarea:disabled { cursor: not-allowed; opacity: .62; }
      .chat-form-footer { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-top: 13px; }
      .chat-status { min-height: 20px; margin: 0; color: var(--muted); font-size: 13px; }

      .feature-rule { border-top: 1px solid var(--line-strong); }
      .builder-layout, .polling-layout, .migration-layout, .embed-layout {
        display: grid;
        grid-template-columns: minmax(270px, .82fr) minmax(0, 1.18fr);
        gap: clamp(42px, 8vw, 120px);
        align-items: start;
      }
      .builder-controls { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
      .builder-control label, .migration-control label, .step-adder label, .embed-code label { display: block; margin-bottom: 8px; font-weight: 600; }
      .builder-control select, .migration-control select, .step-adder select {
        width: 100%; min-height: 46px; border: 0; border-bottom: 1px solid var(--line-strong); border-radius: 0;
        padding: 8px 30px 8px 0; color: var(--ink); background: transparent; outline: none;
      }
      .builder-control select:focus, .migration-control select:focus, .step-adder select:focus { border-bottom-color: var(--accent); }
      .builder-control input { width: 100%; border: 0; border-bottom: 1px solid var(--line-strong); border-radius: 0; padding: 7px 0 8px; color: var(--ink); background: transparent; font-family: var(--mono); font-size: 22px; outline: none; }
      .builder-control input:focus { border-bottom-color: var(--accent); }
      .step-adder { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 14px; align-items: end; margin-top: 26px; }
      .step-adder > div { min-width: 0; }
      .builder-steps { margin: 22px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
      .builder-step { display: grid; grid-template-columns: 30px minmax(0, 1fr) auto; gap: 14px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); }
      .builder-step-index { color: var(--faint); font-family: var(--mono); font-size: 10px; }
      .step-remove { appearance: none; border: 0; border-bottom: 1px solid var(--line-strong); border-radius: 0; padding: 4px 0; color: var(--muted); background: transparent; font-family: var(--mono); font-size: 9px; letter-spacing: .07em; text-transform: uppercase; cursor: pointer; }
      .step-remove:hover { color: var(--accent); border-color: var(--accent); }
      .builder-limit { min-height: 21px; margin: 9px 0 0; color: var(--muted); font-size: 13px; }
      .estimate-strip { border-top: 1px solid var(--line-strong); }
      .estimate-line { display: grid; grid-template-columns: minmax(76px, .42fr) minmax(0, 1fr) auto; gap: 16px; align-items: baseline; padding: 17px 0 18px; border-bottom: 1px solid var(--line); }
      .estimate-platform { font-family: var(--serif); font-size: 23px; }
      .estimate-detail { color: var(--muted); font-size: 13px; }
      .estimate-price { color: var(--accent); font-family: var(--mono); font-size: 13px; text-align: right; white-space: nowrap; }
      .estimate-caption { margin: 14px 0 0; color: var(--muted); font-size: 13px; }
      .builder-send { margin-top: 20px; }

      .polling-demo { margin-top: 45px; padding-top: 35px; border-top: 1px solid var(--line-strong); }
      .mode-switch { display: flex; gap: 24px; margin: 0 0 24px; border-bottom: 1px solid var(--line); }
      .mode-option { appearance: none; position: relative; border: 0; border-radius: 0; padding: 0 0 11px; background: transparent; color: var(--muted); font-family: var(--mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; cursor: pointer; }
      .mode-option[aria-pressed="true"] { color: var(--accent); }
      .mode-option[aria-pressed="true"]::after { content: ""; position: absolute; right: 0; bottom: -1px; left: 0; border-bottom: 2px solid var(--accent); }
      .polling-summary { margin: 0 0 18px; color: var(--muted); }
      .polling-note { margin: 15px 0 0; color: var(--muted); font-size: 14px; }

      .migration-controls { display: grid; grid-template-columns: 1fr 1fr auto; gap: 20px; align-items: end; padding: 24px 0 27px; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
      .migration-list { margin: 0; padding: 0; list-style: none; counter-reset: migration; }
      .migration-list li { counter-increment: migration; display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 16px; padding: 18px 0 20px; border-bottom: 1px solid var(--line); color: var(--muted); }
      .migration-list li::before { content: counter(migration, decimal-leading-zero); color: var(--accent); font-family: var(--mono); font-size: 10px; padding-top: 4px; }
      .migration-list strong { color: var(--ink); }
      .migration-status { min-height: 22px; margin: 12px 0 0; color: var(--accent); font-size: 13px; }

      .lab-state { display: inline-block; margin-top: 17px; border-top: 1px solid var(--accent); padding-top: 8px; color: var(--accent); font-family: var(--mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; }
      .lab-method { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line-strong); }
      .lab-method li { display: grid; grid-template-columns: 32px minmax(0, 1fr); gap: 14px; padding: 15px 0 17px; border-bottom: 1px solid var(--line); color: var(--muted); }
      .lab-method span { color: var(--accent); font-family: var(--mono); font-size: 10px; padding-top: 4px; }
      .lab-method strong { color: var(--ink); }

      .embed-code textarea { display: block; width: 100%; min-height: 150px; resize: vertical; border: 0; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); border-radius: 0; padding: 13px 0; color: var(--ink); background: transparent; font-family: var(--mono); font-size: 12px; line-height: 1.6; outline: none; }
      .embed-code textarea:focus { border-bottom-color: var(--accent); }
      .embed-actions { display: flex; align-items: center; gap: 14px; margin-top: 15px; }
      .embed-status { min-height: 20px; color: var(--accent); font-size: 13px; }

      @media (max-width: 860px) {
        .page { width: min(100% - 40px, 720px); padding: 38px 0 64px; }
        .intro { grid-template-columns: 1fr; gap: 24px; padding-bottom: 30px; }
        h1 { font-size: clamp(50px, 12vw, 76px); }
        .dek { font-size: 18px; }
        .section-nav { position: static; grid-template-columns: 1fr; gap: 5px; padding: 14px 0 16px; }
        .section-nav ul { gap: 6px 18px; }
        .workspace { grid-template-columns: 1fr; }
        .input-panel { padding: 48px 0 44px; border-right: 0; border-bottom: 1px solid var(--line-strong); }
        .output-panel { padding: 46px 0 10px; }
        .result-row.best::before { left: -20px; }
        .guide-heading, .llm-heading, .break-even-heading, .section-heading, .llm-rule, .normalization, .notes, .pricing-notes, .alerts-layout, .explorer-grid, .chatbot-panel, .builder-layout, .polling-layout, .migration-layout, .embed-layout { grid-template-columns: 1fr; gap: 19px; }
        .chatbot-intro h2 { max-width: 13ch; }
        .chatbot-panel { margin-top: 42px; padding: 36px 0 40px; }
        .matrix-table, .matrix-table tbody, .matrix-table tr, .matrix-table td { display: block; width: 100%; }
        .matrix-table thead { display: none; }
        .matrix-table tr { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 28px; padding: 18px 0 20px; border-bottom: 1px solid var(--line); }
        .matrix-table td, .matrix-table td:first-child { width: auto; padding: 8px 0; border: 0; }
        .matrix-table td:first-child { grid-column: 1 / -1; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
        .matrix-table td::before { content: attr(data-label); display: block; margin-bottom: 4px; color: var(--faint); font-family: var(--mono); font-size: 9px; letter-spacing: .07em; text-transform: uppercase; }
        .guide-item { grid-template-columns: 1fr 1fr; gap: 22px 28px; }
        .guide-platform { grid-column: 1 / -1; }
        .llm-item { grid-template-columns: 1fr 1fr; gap: 22px 28px; }
        .llm-product { grid-column: 1 / -1; }
        .range-row { grid-template-columns: 1fr 1fr; gap: 12px 28px; }
        .range-copy { grid-column: 1 / -1; }
        .range-scale { grid-template-columns: repeat(3, minmax(0, 1fr)); }
        .scale-segment:nth-child(4) { padding-left: 0; border-left: 0; }
        .scale-segment:nth-child(n+4) { border-top: 1px solid var(--line); }
      }

      @media (max-width: 560px) {
        .page { width: min(100% - 28px, 620px); padding-top: 28px; }
        h1 { font-size: clamp(45px, 14.5vw, 66px); }
        h2 { font-size: clamp(36px, 11vw, 49px); }
        .spot-kicker { gap: 12px; }
        .spot-art { width: 200px; flex-basis: 200px; }
        .section-nav ul { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 16px; }
        .select-grid { grid-template-columns: 1fr; gap: 17px; }
        .preset-button { grid-template-columns: 105px 1fr; }
        .field > div { grid-template-columns: 1fr; row-gap: 0; }
        .field label { padding-bottom: 7px; }
        .field-help { grid-column: 1; }
        .result-row { grid-template-columns: minmax(0, 1fr) auto; gap: 9px 16px; }
        .result-plan { grid-column: 1 / -1; grid-row: 2; }
        .result-cost { grid-column: 2; grid-row: 1; }
        .amount { font-size: 27px; }
        .receipt-top { display: block; }
        .snapshot { display: inline-block; margin-top: 11px; }
        .receipt-workload { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 20px; }
        .receipt-value { margin-top: 2px; }
        .receipt-line { grid-template-columns: minmax(58px, .4fr) minmax(0, 1fr) auto; gap: 9px; }
        .receipt-platform { font-size: 17px; }
        .comparison-heading { display: block; }
        .comparison-note { margin-top: 6px; text-align: left; }
        .comparison-table, .comparison-table tbody, .comparison-table tr, .comparison-table td { display: block; width: 100%; }
        .comparison-table thead { display: none; }
        .comparison-table tr { display: grid; grid-template-columns: 1fr 1fr; gap: 0 18px; padding: 13px 0; border-bottom: 1px solid var(--line); }
        .comparison-table td, .comparison-table td:nth-child(3), .comparison-table td:nth-child(4) { padding: 6px 0; border: 0; text-align: left; }
        .comparison-table td:first-child { grid-column: 1 / -1; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
        .comparison-table td::before { content: attr(data-label); display: block; margin-bottom: 3px; color: var(--faint); font-family: var(--mono); font-size: 9px; letter-spacing: .07em; text-transform: uppercase; }
        .matrix-table tr, .switch-list, .faq-list, .glossary-list { grid-template-columns: 1fr; }
        .learn-item, .timeline-entry, .source-ledger-list li { grid-template-columns: 1fr; gap: 8px; }
        .explorer-platforms li { grid-template-columns: minmax(66px, .38fr) minmax(0, 1fr); }
        .explorer-price { grid-column: 2; text-align: left; }
        .matrix-table td:first-child { grid-column: auto; }
        .switch-item + .switch-item { border-top: 1px solid var(--line); }
        .alert-row, .builder-controls, .step-adder, .migration-controls { grid-template-columns: 1fr; }
        .alert-row .button, .step-adder .button, .migration-controls .button { width: 100%; text-align: center; }
        .estimate-line { grid-template-columns: minmax(70px, .42fr) minmax(0, 1fr); }
        .estimate-price { grid-column: 2; text-align: left; }
        .embed-actions { align-items: stretch; flex-direction: column; }
        .embed-actions .button { width: 100%; text-align: center; }
        .chat-message { grid-template-columns: 1fr; gap: 5px; }
        .chat-recommendation-head { display: block; }
        .chat-cost { display: block; margin-top: 5px; }
        .chat-comparison li { grid-template-columns: minmax(68px, .4fr) minmax(0, 1fr); }
        .chat-platform-cost { grid-column: 2; text-align: left; }
        .chat-form-footer { align-items: stretch; flex-direction: column; }
        .chat-form-footer .button { width: 100%; text-align: center; }
        .guide-item, .llm-item { grid-template-columns: 1fr; gap: 18px; }
        .guide-platform, .llm-product { grid-column: auto; }
        .range-row { grid-template-columns: 1fr; gap: 8px; }
        .range-copy { grid-column: auto; }
        .range-scale { grid-template-columns: 1fr; }
        .scale-segment + .scale-segment { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
        .editorial-section, .product-guide, .llm-alternatives, .break-even, .notes, .pricing-notes { margin-top: 76px; padding-top: 32px; }
      }

      /* Decision-flow refinement */
      .page { padding-top: 34px; }
      .intro { grid-template-columns: minmax(0, 1.35fr) minmax(260px, .65fr); grid-template-areas: "title art" "dek art"; gap: 14px 46px; align-items: center; padding-bottom: 24px; }
      .intro > div:first-child { grid-area: title; }
      .intro > div:nth-child(2) { grid-area: dek; }
      .intro .hero-art { grid-area: art; margin: 0; }
      h1 { font-size: clamp(42px, 5vw, 66px); }
      .dek { max-width: 58ch; font-size: 16px; }
      .hero-art { max-height: 190px; display: grid; place-items: center; }
      .hero-art img { max-height: 190px; }
      .input-panel, .output-panel { padding-top: 30px; }
      .input-panel .spot-art { width: 92px; flex-basis: 92px; }
      .section-nav { display: block; }
      .section-nav details { display: grid; grid-template-columns: auto 1fr; gap: 26px; }
      .section-nav summary { list-style: none; cursor: default; }
      .section-nav summary::-webkit-details-marker { display: none; }
      .section-nav ul { grid-column: 2; }
      .section-nav a[aria-current="true"] { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; }
      .updated-stamp { margin: -20px 0 24px; color: var(--accent); font-family: var(--mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; }
      .usecase-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 19px; }
      .usecase-chips button {
        min-height: 44px; border: 1px solid var(--line-strong); border-radius: 999px; padding: 8px 14px;
        background: transparent; color: var(--ink); cursor: pointer; font-size: 13px;
      }
      .usecase-chips button:hover, .usecase-chips button[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); }
      .usecase-chips button:focus-visible, summary:focus-visible, .quiet-action:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
      .scenario-picker .select-grid { display: none; }
      .company-size-field { padding-top: 18px; border-top: 1px solid var(--line); }
      .company-size-field > label { display: block; margin-bottom: 8px; font-weight: 600; }
      .company-size-field .number-wrap input { min-height: 44px; }
      .company-size-field .number-wrap input::-webkit-outer-spin-button, .company-size-field .number-wrap input::-webkit-inner-spin-button { -webkit-appearance: auto; margin: 0; }
      .company-size-value { margin: -3px 0 0; color: var(--accent); font-family: var(--mono); font-size: 11px; letter-spacing: .04em; }
      .field-slider { grid-column: 1 / -1; width: 100%; min-height: 44px; margin: 8px 0 0; accent-color: var(--accent); cursor: pointer; }
      .field-primary .number-wrap input { min-height: 44px; }
      .field-primary .number-wrap input::-webkit-outer-spin-button, .field-primary .number-wrap input::-webkit-inner-spin-button { -webkit-appearance: auto; margin: 0; }
      .advanced-options { margin: 26px 0 0; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); }
      .advanced-options > summary { min-height: 48px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-weight: 600; }
      .advanced-options > summary::after { content: "+"; color: var(--accent); font-family: var(--mono); }
      .advanced-options[open] > summary::after { content: "−"; }
      .advanced-options .preset-picker { margin-top: 0; border-top: 1px solid var(--line); }
      .chat-disclosure { margin: 24px 0 4px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
      .chat-disclosure > summary { min-height: 52px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-family: var(--serif); font-size: 21px; }
      .chat-disclosure > summary::after { content: "+"; color: var(--accent); font-family: var(--mono); }
      .chat-disclosure[open] > summary::after { content: "−"; }
      .input-panel .chatbot-panel { grid-template-columns: 1fr; gap: 14px; margin: 0; padding: 24px 0 30px; border-bottom: 0; }
      .input-panel .chatbot-intro h2 { font-size: 31px; max-width: 16ch; }
      .input-panel .chatbot-intro .section-note { font-size: 14px; }
      .verdict-card { position: sticky; top: 74px; z-index: 3; padding: 0 0 24px; background: var(--paper); border-bottom: 1px solid var(--line-strong); }
      .verdict-line { margin: 14px 0 0; color: var(--accent); font-family: var(--serif); font-size: clamp(28px, 3.2vw, 42px); line-height: 1.12; }
      .verdict-card .section-note { margin: 10px 0 17px; }
      .provenance-strip { display: flex; flex-wrap: wrap; gap: 7px 12px; align-items: center; color: var(--muted); font-family: var(--mono); font-size: 9px; line-height: 1.5; }
      .provenance-strip a { color: var(--accent); text-underline-offset: 3px; }
      .provenance-strip span { border: 1px solid var(--line); padding: 4px 6px; }
      .output-panel #price-alerts { margin: 22px 0 0; padding: 20px 0 0; border-top: 1px solid var(--line); }
      .output-panel #price-alerts .alerts-layout { grid-template-columns: 1fr; gap: 12px; }
      .output-panel #price-alerts h2 { font-size: 25px; line-height: 1.18; }
      .output-panel #price-alerts .kicker { display: none; }
      .quiet-action { min-height: 44px; border: 0; border-bottom: 1px solid var(--line-strong); padding: 8px 2px; background: transparent; color: var(--muted); cursor: pointer; }
      .back-to-top { display: inline-block; margin-top: 28px; color: var(--muted); font-family: var(--mono); font-size: 10px; letter-spacing: .07em; text-transform: uppercase; text-underline-offset: 4px; }
      .section-cta { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-top: 30px; padding-top: 22px; border-top: 1px solid var(--line); }
      .section-cta a:first-child { color: var(--accent); font-family: var(--mono); font-size: 11px; font-weight: 500; letter-spacing: .07em; text-transform: uppercase; text-underline-offset: 4px; }
      .matrix-table tr.current-winner td { background: var(--accent-soft); color: var(--ink); }
      .timeline-status.new-marker { border: 1px solid var(--accent); padding: 3px 5px; }
      .table-scroll { overflow-x: auto; border-bottom: 1px solid var(--line-strong); }
      .table-scroll .matrix-table thead th { position: sticky; top: 0; z-index: 2; background: var(--paper); }
      .mobile-verdict { display: none; }

      @media (max-width: 860px) {
        .intro { grid-template-columns: minmax(0, 1fr) 150px; grid-template-areas: "title art" "dek dek"; gap: 14px 24px; }
        .section-nav { position: sticky; top: 0; }
        .section-nav details { display: block; }
        .section-nav summary { min-height: 44px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; }
        .section-nav summary::after { content: "+"; color: var(--accent); }
        .section-nav details[open] summary::after { content: "−"; }
        .section-nav details:not([open]) ul { display: none; }
        .section-nav ul { margin-top: 8px; }
        .verdict-card { position: static; }
        .mobile-verdict { position: fixed; right: 0; bottom: 0; left: 0; z-index: 20; display: none; grid-template-columns: minmax(0,1fr) auto; gap: 12px; align-items: center; min-height: 68px; padding: 10px max(16px, env(safe-area-inset-right)) calc(10px + env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left)); border-top: 1px solid var(--line-strong); background: var(--paper); }
        .mobile-verdict.ready { display: grid; }
        .mobile-verdict.nav-open { display: none; }
        .mobile-verdict strong { display: block; font-family: var(--serif); font-size: 18px; line-height: 1.15; }
        .mobile-verdict span { display: block; color: var(--muted); font-size: 11px; }
        .mobile-verdict a { color: var(--accent); font-family: var(--mono); font-size: 10px; text-transform: uppercase; white-space: nowrap; }
        body { padding-bottom: calc(72px + env(safe-area-inset-bottom)); }
        .table-scroll .matrix-table { min-width: 980px; display: table; }
        .table-scroll .matrix-table thead { display: table-header-group; }
        .table-scroll .matrix-table tbody { display: table-row-group; }
        .table-scroll .matrix-table tr { display: table-row; }
        .table-scroll .matrix-table th, .table-scroll .matrix-table td, .table-scroll .matrix-table td:first-child { display: table-cell; width: auto; padding: 13px 12px 15px 0; border-bottom: 1px solid var(--line); }
        .table-scroll .matrix-table td::before { display: none; }
      }
      @media (max-width: 560px) {
        .page { padding-top: 10px; }
        .intro { position: relative; display: block; padding-bottom: 8px; }
        .intro > div:first-child { padding-right: 0; }
        .intro .kicker { max-width: calc(100% - 90px); margin-bottom: 5px; }
        .intro .hero-art { position: absolute; top: 0; right: 0; width: 78px; max-height: 42px; margin: 0; }
        .intro .hero-art img { max-height: 42px; }
        h1 { max-width: 330px; font-size: 31px; line-height: .96; letter-spacing: -.035em; }
        .intro .dek { margin-top: 9px; font-size: 12px; line-height: 1.36; }
        .privacy-note { margin-top: 6px; font-size: 8px; }
        .input-panel, .output-panel { padding-top: 16px; }
        .spot-kicker { margin-bottom: 5px; }
        .input-panel .spot-art { width: 48px; flex-basis: 48px; }
        .input-panel h2 { font-size: 38px; }
        .input-panel .section-note { margin: 5px 0 8px; font-size: 14px; line-height: 1.42; }
        .updated-stamp { margin: 0 0 11px; }
        .scenario-picker { margin-bottom: 18px; padding: 12px 0 15px; }
        .scenario-intro { margin-bottom: 9px; font-size: 12px; }
        .usecase-chips { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 4px; margin-bottom: 10px; overflow: visible; padding-bottom: 0; }
        .usecase-chips button { min-width: 0; padding: 6px 3px; font-size: 10px; line-height: 1.15; }
        .company-size-field { padding-top: 10px; }
        .company-size-field > label { margin-bottom: 3px; font-size: 14px; }
        .company-size-field .field-slider { margin-top: 1px; }
        .company-size-field .field-help { margin-top: 2px; font-size: 11px; }
        .company-size-value { margin-top: 0; }
        .scenario-summary { margin-top: 7px; font-size: 12px; line-height: 1.35; }
        .field { grid-template-columns: 24px minmax(0, 1fr); gap: 10px; }
        .field > div { grid-template-columns: 1fr; }
        .section-cta { align-items: flex-start; flex-direction: column; }
        .output-panel #price-alerts .alert-row { grid-template-columns: 1fr; }
      }
      /* Editorial polish pass */
      :root {
        --section-space: clamp(76px, 8vw, 104px);
        --section-rule-gap: clamp(34px, 4vw, 46px);
        --toc-sticky-offset: 54px;
      }
      .ad-slot {
        display: none !important;
        width: 0 !important;
        height: 0 !important;
        min-height: 0 !important;
        margin: 0 !important;
        padding: 0 !important;
        border: 0 !important;
        overflow: hidden !important;
      }
      :where(a, button, input, select, textarea, summary, [tabindex]):focus { outline: none; }
      :where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 3px;
      }
      h2 { font-size: clamp(34px, 3.7vw, 50px); line-height: 1.06; }
      .comparison h3, .receipt h3, .source-ledger h3, .llm-rule h3, .normalization h3 { font-size: clamp(24px, 2.35vw, 29px); }
      .page > :is(.editorial-section, .product-guide, .llm-alternatives, .break-even, .notes, .pricing-notes) {
        margin-top: var(--section-space);
        padding-top: var(--section-rule-gap);
        border-top: 1px solid var(--line-strong);
      }
      .section-heading, .guide-heading, .llm-heading, .break-even-heading { margin-bottom: clamp(31px, 3.3vw, 40px); }
      .section-heading, .guide-heading, .llm-heading, .break-even-heading,
      .llm-rule, .normalization, .notes, .pricing-notes, .alerts-layout {
        grid-template-columns: minmax(280px, .92fr) minmax(0, 1.08fr);
      }

      .section-nav { border-top: 1px solid var(--line-strong); border-bottom-color: var(--line); }
      .section-nav summary { color: var(--muted); }
      .section-nav a {
        position: relative;
        padding-bottom: 2px;
        text-decoration: none;
        transition: color 150ms ease;
      }
      .section-nav a:hover { text-decoration: none; }
      .section-nav a[aria-current="true"] {
        color: var(--ink);
        font-weight: 600;
        text-decoration: none;
      }
      .section-nav a[aria-current="true"]::after {
        content: "";
        position: absolute;
        right: 0;
        bottom: -3px;
        left: 0;
        border-bottom: 2px solid var(--accent);
      }

      .usecase-chips { gap: 5px 16px; }
      .usecase-chips button {
        min-height: 38px;
        border: 0;
        border-bottom: 1px solid var(--line);
        border-radius: 0;
        padding: 7px 1px 6px;
        color: var(--muted);
        background: transparent;
        font-weight: 500;
        transition: color 140ms ease, border-color 140ms ease, transform 100ms ease;
      }
      .usecase-chips button:hover { border-color: var(--line-strong); color: var(--ink); }
      .usecase-chips button[aria-pressed="true"] {
        border-bottom: 2px solid var(--accent);
        color: var(--accent);
      }
      .usecase-chips button:active { transform: translateY(1px); }
      .preset-button {
        min-height: 46px;
        transition: color 140ms ease, border-color 140ms ease, background-color 140ms ease;
      }
      .preset-button:hover { border-bottom-color: var(--line-strong); color: var(--ink); background: color-mix(in srgb, var(--surface) 58%, transparent); }
      .preset-button[aria-pressed="true"] { border-bottom: 2px solid var(--accent); color: var(--accent); background: transparent; }
      .preset-button[aria-pressed="true"] .preset-values { color: var(--accent); }

      .verdict-card {
        padding: 21px 0 25px;
        border-top: 1px solid var(--line-strong);
        border-bottom: 1px solid var(--line);
      }
      .verdict-card .kicker { margin-bottom: 7px; }
      .verdict-card h2 {
        font-family: var(--sans);
        font-size: 13px;
        line-height: 1.35;
        font-weight: 600;
        letter-spacing: .01em;
      }
      .verdict-line {
        max-width: 22ch;
        margin-top: 13px;
        color: var(--ink);
        font-size: clamp(32px, 3.75vw, 48px);
        line-height: 1.08;
        letter-spacing: -.028em;
      }
      .verdict-card .section-note { max-width: 52ch; margin: 13px 0 18px; font-size: 14px; }
      .provenance-strip { gap: 5px 13px; }
      .provenance-strip span { position: relative; border: 0; padding: 0 0 0 12px; }
      .provenance-strip span::before { content: "·"; position: absolute; left: 0; color: var(--accent); }
      .estimate-updated { animation: estimate-settle 220ms ease-out both; }
      @keyframes estimate-settle {
        from { opacity: .52; transform: translateY(2px); }
        to { opacity: 1; transform: translateY(0); }
      }

      .comparison-table { font-variant-numeric: tabular-nums lining-nums; }
      .comparison-table th {
        position: sticky;
        top: 0;
        z-index: 2;
        padding-top: 12px;
        padding-bottom: 12px;
        background: var(--paper);
        box-shadow: 0 1px 0 var(--line-strong);
      }
      .comparison-table td { padding-top: 17px; padding-bottom: 18px; }
      .comparison-table tr.current-winner td { background: var(--accent-soft); }
      .comparison-table tr.current-winner td:first-child { color: var(--accent); }
      .table-scroll { overflow: visible; border-bottom: 1px solid var(--line-strong); }
      .table-scroll .matrix-table { font-variant-numeric: tabular-nums lining-nums; }
      .table-scroll .matrix-table thead th {
        top: var(--toc-sticky-offset);
        background: var(--paper);
        box-shadow: 0 1px 0 var(--line-strong);
      }
      .matrix-table td { border-bottom-color: var(--line); }
      .matrix-table tr.current-winner td { background: var(--accent-soft); }
      .matrix-table tr.current-winner td:first-child { color: var(--accent); }

      details > summary { list-style: none; }
      details > summary::-webkit-details-marker { display: none; }
      .advanced-options > summary, .chat-disclosure > summary, .faq-item > summary, .section-nav summary {
        position: relative;
        padding-right: 28px;
      }
      .advanced-options > summary::after, .chat-disclosure > summary::after, .faq-item > summary::after, .section-nav summary::after {
        content: "+";
        position: absolute;
        top: 50%;
        right: 2px;
        color: var(--accent);
        font-family: var(--mono);
        font-size: 16px;
        font-weight: 400;
        line-height: 1;
        transform: translateY(-50%);
      }
      .advanced-options[open] > summary::after, .chat-disclosure[open] > summary::after, .faq-item[open] > summary::after, .section-nav details[open] > summary::after { content: "−"; }
      .faq-list { align-items: start; }
      .faq-item { padding: 0; }
      .faq-item > summary {
        min-height: 72px;
        display: flex;
        align-items: center;
        padding-top: 17px;
        padding-bottom: 17px;
        cursor: pointer;
        font-family: var(--serif);
        font-size: 22px;
        line-height: 1.22;
      }
      .faq-answer { padding: 0 30px 24px 0; color: var(--muted); }
      .faq-answer > :first-child { margin-top: 0; }
      .faq-answer > :last-child { margin-bottom: 0; }

      .mobile-verdict.cta-obscured { display: none !important; }

      @media (max-width: 860px) {
        .section-heading, .guide-heading, .llm-heading, .break-even-heading,
        .llm-rule, .normalization, .notes, .pricing-notes, .alerts-layout { grid-template-columns: 1fr; }
        .section-nav details { max-height: min(58vh, 420px); overflow-y: auto; scrollbar-width: thin; }
        .section-nav summary { position: sticky; top: 0; z-index: 2; background: var(--paper); }
        .mobile-verdict { min-height: 58px; padding-top: 7px; padding-bottom: calc(7px + env(safe-area-inset-bottom)); }
        .mobile-verdict strong { font-size: 16px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
        .mobile-verdict span { font-size: 10px; }
        body { padding-bottom: calc(62px + env(safe-area-inset-bottom)); }
        .table-scroll { overflow: visible; }
        .table-scroll .matrix-table, .table-scroll .matrix-table tbody, .table-scroll .matrix-table tr, .table-scroll .matrix-table td { display: block; width: 100%; min-width: 0; }
        .table-scroll .matrix-table thead { display: none; }
        .table-scroll .matrix-table tr { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 28px; padding: 18px 0 20px; border-bottom: 1px solid var(--line); }
        .table-scroll .matrix-table td, .table-scroll .matrix-table td:first-child { width: auto; padding: 8px 0; border: 0; }
        .table-scroll .matrix-table td:first-child { grid-column: 1 / -1; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
        .table-scroll .matrix-table td::before { content: attr(data-label); display: block; margin-bottom: 4px; color: var(--faint); font-family: var(--mono); font-size: 9px; letter-spacing: .07em; text-transform: uppercase; }
      }
      @media (max-width: 560px) {
        h2 { font-size: clamp(31px, 9.7vw, 42px); }
        .input-panel h2 { font-size: 35px; }
        .usecase-chips { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 4px 10px; }
        .usecase-chips button { min-height: 36px; padding: 6px 1px 5px; font-size: 10px; }
        .verdict-card { padding-top: 17px; }
        .verdict-line { font-size: clamp(30px, 9.2vw, 39px); }
        .provenance-strip { display: block; }
        .provenance-strip > * { display: block; margin-top: 5px; }
        .provenance-strip span { padding-left: 12px; }
        .faq-list { grid-template-columns: 1fr; }
        .faq-item > summary { min-height: 64px; font-size: 21px; }
        .table-scroll .matrix-table tr { grid-template-columns: 1fr; gap: 0; }
        .table-scroll .matrix-table td:first-child { grid-column: auto; }
        .comparison-table th { position: static; box-shadow: none; }
      }
      @media (prefers-reduced-motion: reduce) {
        html { scroll-behavior: auto; }
        *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
        .estimate-updated { animation: none !important; }
      }

      .alert-form input[type="email"]:disabled {
        cursor: not-allowed;
        opacity: .52;
      }
      .site-footer {
        margin-top: var(--section-space);
        padding: 42px 0 10px;
        border-top: 1px solid var(--line-strong);
      }
      .footer-grid {
        display: grid;
        grid-template-columns: minmax(260px, .78fr) minmax(0, 1.22fr);
        gap: clamp(42px, 8vw, 120px);
        align-items: start;
      }
      .site-footer h2 {
        margin: 0 0 13px;
        font-size: clamp(25px, 2.5vw, 32px);
      }
      .site-footer p {
        margin: 0;
        color: var(--muted);
        font-size: 14px;
        line-height: 1.65;
      }
      .footer-contact { margin-top: 22px !important; color: var(--ink) !important; }
      .footer-privacy {
        border-top: 1px solid var(--line);
        border-bottom: 1px solid var(--line);
      }
      .footer-privacy summary {
        position: relative;
        min-height: 48px;
        display: flex;
        align-items: center;
        padding-right: 28px;
        cursor: pointer;
        font-family: var(--serif);
        font-size: 20px;
      }
      .footer-privacy summary::after {
        content: "+";
        position: absolute;
        right: 2px;
        color: var(--accent);
        font-family: var(--mono);
      }
      .footer-privacy[open] summary::after { content: "−"; }
      .footer-privacy p { padding: 2px 0 23px; }
      .footer-legal {
        display: flex;
        align-items: baseline;
        justify-content: space-between;
        gap: 30px;
        margin-top: 34px;
        padding-top: 19px;
        border-top: 1px solid var(--line);
      }
      .footer-legal p:first-child { max-width: 76ch; }
      .footer-copyright {
        flex: 0 0 auto;
        color: var(--faint) !important;
        font-family: var(--mono);
        font-size: 10px !important;
        letter-spacing: .045em;
      }
      @media (max-width: 760px) {
        .footer-grid { grid-template-columns: 1fr; gap: 31px; }
        .footer-legal { align-items: flex-start; flex-direction: column; gap: 14px; }
      }

      /* Phone composition: reduce redundant controls and restore an editorial reading rhythm. */
      @media (max-width: 560px) {
        html { scroll-padding-top: 58px; }
        body { font-size: 16px; line-height: 1.55; }
        .page { width: calc(100% - 40px); padding: 20px 0 54px; }

        .intro { padding: 0 0 14px; }
        .intro .kicker { max-width: none; margin: 0 0 8px; font-size: 9px; line-height: 1.35; }
        h1 { max-width: none; font-size: clamp(32px, 9.4vw, 38px); line-height: 1.01; letter-spacing: -.038em; }
        .intro .dek {
          display: block;
          max-width: 34ch;
          margin-top: 9px;
          color: var(--muted);
          font-size: 12px;
          line-height: 1.42;
        }
        .dek-long { display: none; }
        .dek-mobile { display: inline; }
        .privacy-note { display: none; }
        .intro .hero-art {
          position: static;
          display: block;
          width: 100%;
          max-height: 42px;
          margin: 11px 0 0;
          overflow: hidden;
          border-top: 1px solid var(--line);
          border-bottom: 1px solid var(--line);
        }
        .intro .hero-art img { width: 100%; height: 40px; object-fit: cover; object-position: center; }

        .input-panel { padding: 18px 0 30px; }
        .output-panel { padding: 32px 0 6px; }
        .spot-kicker { display: block; margin-bottom: 8px; }
        .input-panel .spot-art { display: none; }
        .input-panel h2 { font-size: 34px; line-height: 1.02; }
        .input-panel .section-note { margin: 7px 0 7px; font-size: 13px; line-height: 1.42; }
        .updated-stamp { margin: 0 0 13px; font-size: 9px; }

        .scenario-picker { margin-bottom: 14px; padding: 13px 0 15px; }
        .scenario-intro { display: none; }
        .usecase-chips {
          display: grid;
          grid-template-columns: repeat(2, minmax(0, 1fr));
          gap: 2px 18px;
          margin-bottom: 18px;
        }
        .usecase-chips button {
          min-height: 42px;
          padding: 9px 1px 8px;
          font-size: 13px;
          line-height: 1.2;
        }
        .company-size-field {
          display: grid;
          grid-template-columns: minmax(0, 1fr) auto;
          gap: 4px 14px;
          align-items: baseline;
          padding-top: 15px;
        }
        .company-size-field > label { margin: 0; font-size: 14px; }
        .company-size-field .number-wrap { grid-column: 2; grid-row: 1; width: 76px; }
        .company-size-field .number-wrap input { min-height: 34px; padding: 0 0 4px; font-size: 22px; text-align: right; }
        .company-size-field .number-wrap .unit { display: none; }
        .company-size-field .field-help { display: none; }
        .company-size-field .field-slider { grid-column: 1 / -1; grid-row: 3; margin: 5px 0 0; }
        .company-size-value { grid-column: 1 / -1; grid-row: 2; margin: 1px 0 0; font-size: 10px; }
        .scenario-summary { margin-top: 12px; font-size: 12px; line-height: 1.48; }

        .chat-disclosure { margin-top: 18px; }
        .chat-disclosure > summary { min-height: 48px; font-size: 19px; }
        .advanced-options { margin-top: 19px; }
        .advanced-options > summary { min-height: 48px; font-size: 14px; }

        .field { grid-template-columns: 21px minmax(0, 1fr); gap: 9px; padding: 18px 0 19px; }
        .field-index { padding-top: 5px; font-size: 9px; }
        .field label { padding-bottom: 5px; font-size: 14px; }
        .field-primary .field-slider { display: none; }
        .number-wrap input, .field-primary .number-wrap input { min-height: 40px; padding-bottom: 6px; font-size: 26px; }
        .unit { font-size: 8px; }
        .field-help { margin-top: 6px; font-size: 12px; line-height: 1.42; }
        .actions { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px; margin-top: 23px; }
        .actions .button { min-height: 48px; text-align: center; }
        .quiet-action { min-height: 48px; padding-inline: 10px; }

        .verdict-card { padding: 18px 0 21px; }
        .verdict-card h2 { font-size: 12px; }
        .verdict-line { max-width: 16ch; font-size: clamp(29px, 8.8vw, 36px); }
        .result-row { grid-template-columns: 1fr; gap: 9px; padding: 21px 0 22px; }
        .result-plan { grid-column: 1; grid-row: 2; }
        .result-cost { grid-column: 1; grid-row: 3; text-align: left; }
        .amount { font-size: 23px; white-space: normal; }
        .platform-name { font-size: 25px; }
        .receipt { padding: 24px 0; }
        .receipt-line { grid-template-columns: minmax(72px, .42fr) minmax(0, 1fr); }
        .receipt-price { grid-column: 1 / -1; text-align: left; white-space: normal; }
        .estimate-price, .explorer-price { white-space: normal; }
        .estimate-price { grid-column: 1 / -1; text-align: left; }
        .explorer-price { grid-column: 1 / -1; text-align: left; }

        .section-nav { top: 0; padding: 8px 0; }
        .section-nav summary { min-height: 42px; }
        .section-nav details { max-height: min(72vh, 520px); }
        .section-nav ul { grid-template-columns: 1fr; gap: 0; margin: 3px 0 8px; }
        .section-nav li { border-top: 1px solid var(--line); }
        .section-nav a { display: block; min-height: 40px; padding: 9px 0 8px; font-size: 13px; }
        .section-nav a[aria-current="true"]::after { display: none; }

        .page > :is(.editorial-section, .product-guide, .llm-alternatives, .break-even, .notes, .pricing-notes) {
          margin-top: 58px;
          padding-top: 28px;
        }
        .section-heading, .guide-heading, .llm-heading, .break-even-heading { gap: 12px; margin-bottom: 25px; }
        h2 { font-size: clamp(30px, 9vw, 38px); }
        .section-note { margin-top: 9px; font-size: 14px; line-height: 1.5; }
        .learn-item { padding: 23px 0 25px; }
        .learn-item dt { font-size: 25px; }
        .faq-item > summary { min-height: 60px; padding-top: 14px; padding-bottom: 14px; font-size: 20px; }
        .faq-answer { padding-bottom: 20px; }
        .section-cta { margin-top: 23px; padding-top: 18px; }

        .mobile-verdict { grid-template-columns: minmax(0, 1fr) auto; min-height: 56px; }
        .mobile-verdict strong { font-size: 15px; }
        .mobile-verdict span { font-size: 9px; }
      }