:root {
  --ink: #101828;
  --muted: #5f6b7a;
  --subtle: #8a94a3;
  --line: #e3e7ec;
  --line-strong: #cfd6de;
  --paper: #ffffff;
  --canvas: #f5f7f9;
  --accent: #08766d;
  --accent-dark: #075e57;
  --accent-soft: #eaf7f4;
  --navy: #15243a;
  --blue-soft: #edf4ff;
  --amber-soft: #fff8e8;
  --negative: #b42318;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--canvas); font-family: var(--sans); font-size: 14px; -webkit-font-smoothing: antialiased; }
button, input, select { font: inherit; }
button, select { cursor: pointer; }
a { color: inherit; }
.shell { width: min(1480px, calc(100% - 56px)); margin: 0 auto; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
.eyebrow { display: block; color: var(--accent); font-size: 11px; font-weight: 750; letter-spacing: .11em; text-transform: uppercase; }
.status-dot { width: 7px; height: 7px; display: inline-block; border-radius: 50%; background: #19a974; box-shadow: 0 0 0 3px #e5f7ef; }

.topbar { position: sticky; z-index: 20; top: 0; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.97); backdrop-filter: blur(10px); }
.topbar-inner { height: 64px; display: flex; align-items: center; gap: 34px; }
.brand { display: inline-flex; align-items: center; gap: 0; flex: 0 0 auto; color: var(--ink); font-size: 22px; font-weight: 760; letter-spacing: -.65px; line-height: 1; text-decoration: none; }
.brand-muted { color: var(--muted); font-weight: 520; }
.brand-mark { display: none !important; }
.topbar nav { display: flex; align-items: center; gap: 26px; margin-left: auto; }
.topbar nav a { position: relative; padding: 23px 0 21px; color: #455164; font-size: 13px; font-weight: 560; text-decoration: none; white-space: nowrap; }
.topbar nav a:hover, .topbar nav a.is-active { color: var(--ink); }
.topbar nav a.is-active::after { position: absolute; right: 0; bottom: -1px; left: 0; height: 2px; content: ""; background: var(--accent); }
.topbar-status { display: flex; align-items: center; gap: 8px; padding-left: 22px; color: var(--muted); border-left: 1px solid var(--line); font-size: 12px; }

.intro { border-bottom: 1px solid var(--line); background: var(--paper); }
.intro-inner { min-height: 184px; display: flex; justify-content: space-between; align-items: center; gap: 44px; padding-block: 30px; }
.intro-kicker { display: flex; align-items: center; gap: 9px; }
.intro h1, .page-intro h1 { margin: 11px 0 0; font-size: clamp(38px, 4vw, 54px); font-weight: 720; letter-spacing: -2.3px; line-height: 1.02; }
.intro h1 span { color: var(--accent); }
.intro p, .page-intro p { max-width: 760px; margin: 13px 0 0; color: var(--muted); font-size: 15px; line-height: 1.55; }
.intro-metrics { display: flex; flex: 0 0 auto; border: 1px solid var(--line); background: #fbfcfd; }
.intro-metrics div { min-width: 112px; padding: 19px 22px; }
.intro-metrics div + div { border-left: 1px solid var(--line); }
.intro-metrics strong, .intro-metrics span { display: block; }
.intro-metrics strong { font-family: var(--mono); font-size: 22px; letter-spacing: -.6px; }
.intro-metrics span { margin-top: 4px; color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .07em; }

.workspace { padding: 22px 0 38px; }
.workbench { display: grid; grid-template-columns: 330px minmax(0, 1fr); align-items: start; gap: 18px; }
.calculator-panel, .market-panel, .information-card, .prose-card, .reading-sidebar, .notice { border: 1px solid var(--line); background: var(--paper); }
.calculator-panel { position: sticky; top: 86px; padding: 20px; }
.panel-heading, .market-heading, .detail-toolbar { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; }
.panel-heading h2, .market-heading h2 { margin: 5px 0 0; font-size: 20px; line-height: 1.2; letter-spacing: -.45px; }
.icon-button { width: 32px; height: 32px; color: var(--muted); border: 1px solid var(--line); background: var(--paper); font-size: 18px; }
.icon-button:hover { color: var(--accent); border-color: #9ed4cd; }
.preset-group { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 18px; border: 1px solid var(--line); }
.preset { min-width: 0; min-height: 34px; padding: 0 5px; color: var(--muted); border: 0; background: var(--paper); font-size: 11px; }
.preset + .preset { border-left: 1px solid var(--line); }
.preset.is-active { color: var(--accent-dark); background: var(--accent-soft); font-weight: 700; }
.input-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 10px; margin-top: 18px; }
.input-field { min-width: 0; }
.input-field > span { display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: 11px; }
.input-field i { color: var(--subtle); font-size: 10px; font-style: normal; }
.input-field select { max-width: 76px; padding: 0; color: var(--accent); border: 0; outline: 0; background: transparent; font-size: 10px; }
.input-field input { width: 100%; height: 39px; margin-top: 5px; padding: 0 10px; color: var(--ink); border: 1px solid var(--line); outline: 0; background: #fbfcfd; font-family: var(--mono); font-size: 12px; }
.input-field input:focus, .search-box:focus-within, .sort-select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(8,118,109,.09); }
.suffix-input { position: relative; }
.suffix-input input { padding-right: 30px; }
.suffix-input > span { position: absolute; right: 10px; bottom: 11px; color: var(--muted); font-size: 11px; }
.mode-block { margin-top: 16px; }
.mode-block > span { display: block; margin-bottom: 6px; color: var(--muted); font-size: 11px; }
.segmented { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); }
.mode-button { height: 35px; color: var(--muted); border: 0; background: var(--paper); font-size: 11px; }
.mode-button + .mode-button { border-left: 1px solid var(--line); }
.mode-button.is-active { color: var(--accent-dark); background: var(--accent-soft); font-weight: 700; }
.advanced { margin-top: 15px; border-top: 1px solid var(--line); }
.advanced summary { padding-top: 13px; color: var(--muted); font-size: 11px; }
.advanced-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.toggle-row { display: flex; justify-content: space-between; align-items: center; margin-top: 13px; color: var(--muted); font-size: 11px; }
.toggle-row input { accent-color: var(--accent); }
.estimate-block { margin-top: 18px; padding: 16px; border: 1px solid #bfe2dd; background: #f0faf8; }
.estimate-label { display: flex; justify-content: space-between; color: var(--muted); font-size: 11px; }
.estimate-label span { color: var(--accent); font-weight: 700; }
.estimate-amount { margin-top: 8px; color: var(--accent-dark); font-family: var(--mono); font-size: 34px; font-weight: 720; letter-spacing: -1.8px; }
.estimate-model { min-height: 32px; margin-top: 5px; font-size: 12px; line-height: 1.4; }
.estimate-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 13px; padding-top: 12px; border-top: 1px solid #cfe8e4; }
.estimate-meta span, .estimate-meta strong { display: block; }
.estimate-meta span { color: var(--muted); font-size: 10px; }
.estimate-meta strong { margin-top: 4px; font-family: var(--mono); font-size: 12px; }
.share-button { width: 100%; height: 38px; margin-top: 11px; color: var(--accent-dark); border: 1px solid #b9dcd7; background: var(--paper); font-size: 11px; font-weight: 650; }

.market-panel { min-width: 0; padding: 20px; }
.market-heading { align-items: flex-end; }
.catalog-count { display: flex; align-items: baseline; gap: 7px; }
.catalog-count strong { font-family: var(--mono); font-size: 28px; }
.catalog-count span { color: var(--muted); font-size: 11px; }
.catalog-toolbar { display: grid; grid-template-columns: minmax(260px, 1fr) 200px 190px; gap: 9px; margin-top: 20px; }
.search-box { height: 41px; display: flex; align-items: center; gap: 8px; padding: 0 12px; border: 1px solid var(--line-strong); background: #fbfcfd; }
.search-box > span { color: var(--subtle); font-size: 19px; }
.search-box input { width: 100%; min-width: 0; padding: 0; border: 0; outline: 0; background: transparent; font-size: 13px; }
.sort-select { width: 100%; height: 41px; padding: 0 10px; color: #455164; border: 1px solid var(--line-strong); outline: 0; background: var(--paper); font-size: 12px; }
.filter-label { margin-top: 15px; color: var(--subtle); font-size: 10px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.filter-row { display: flex; gap: 7px; margin-top: 7px; overflow-x: auto; padding-bottom: 2px; scrollbar-width: thin; }
.filter-pill, .capability-chip, .scope-chip { flex: 0 0 auto; min-height: 31px; padding: 0 10px; color: #4b586b; border: 1px solid var(--line); background: var(--paper); font-size: 11px; }
.filter-pill span, .capability-chip span, .scope-chip span { margin-left: 4px; color: var(--subtle); font-family: var(--mono); font-size: 9px; }
.filter-pill.is-active, .capability-chip.is-active, .scope-chip.is-active { color: var(--accent-dark); border-color: #9ed4cd; background: var(--accent-soft); font-weight: 650; }
.scope-note { margin: 7px 0 0; color: var(--muted); font-size: 10px; line-height: 1.45; }
.table-caption { display: flex; justify-content: space-between; align-items: center; margin-top: 17px; padding: 12px 0; color: var(--muted); border-top: 1px solid var(--line); font-size: 11px; }
.table-caption strong { color: var(--ink); }
.verified-caption { display: flex; align-items: center; gap: 7px; }
.table-frame { width: 100%; }
.table-scroll { overflow-x: auto; border: 1px solid var(--line); -webkit-overflow-scrolling: touch; touch-action: pan-x pan-y; overscroll-behavior-inline: contain; }
.catalog-table-scroll { max-height: 930px; overflow: auto; }
.data-table { width: 100%; min-width: 1040px; border-collapse: collapse; background: var(--paper); }
.price-table { min-width: 1180px; }
.data-table th { position: sticky; z-index: 2; top: 0; height: 39px; padding: 0 10px; color: #667085; border-bottom: 1px solid var(--line-strong); background: #f8fafb; font-size: 10px; font-weight: 720; letter-spacing: .035em; text-align: left; text-transform: uppercase; white-space: nowrap; }
.data-table td { height: 58px; padding: 7px 10px; border-bottom: 1px solid var(--line); font-size: 12px; }
.data-table tbody tr:hover { background: #f8fbfb; }
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table .numeric { font-family: var(--mono); text-align: right; white-space: nowrap; }
.table-model { min-width: 250px; display: flex; align-items: center; gap: 8px; }
.table-model > span:last-child { min-width: 0; }
.model-check { width: 15px; height: 15px; flex: 0 0 15px; margin: 0; accent-color: var(--accent); }
.provider-icon, .provider-icon-space, .endpoint-mark { width: 30px; flex: 0 0 30px; }
.provider-icon, .endpoint-mark { height: 30px; display: inline-grid; place-items: center; border-radius: 6px; }
.provider-icon-space { height: 1px; display: inline-block; }
.provider-icon { visibility: hidden; overflow: hidden; border: 0; background: transparent; font-size: 0; }
.provider-icon::before { width: 18px; height: 18px; content: ""; background-position: center; background-repeat: no-repeat; background-size: contain; }
.provider-icon[data-provider-slug="openai"],
.provider-icon[data-provider-slug="qwen"],
.provider-icon[data-provider-slug="google"],
.provider-icon[data-provider-slug="anthropic"],
.provider-icon[data-provider-slug="mistral"],
.provider-icon[data-provider-slug="deepseek"],
.provider-icon[data-provider-slug="z-ai"],
.provider-icon[data-provider-slug="xai"],
.provider-icon[data-provider-slug="meta"],
.provider-icon[data-provider-slug="minimax"],
.provider-icon[data-provider-slug="nvidia"],
.provider-icon[data-provider-slug="moonshot-ai"],
.provider-icon[data-provider-slug="bytedance-seed"],
.provider-icon[data-provider-slug="bytedance"],
.provider-icon[data-provider-slug="amazon"],
.provider-icon[data-provider-slug="cohere"],
.provider-icon[data-provider-slug="perplexity"],
.provider-icon[data-provider-slug="microsoft"],
.provider-icon[data-provider-slug="openrouter"],
.provider-icon[data-provider-slug="xiaomi"],
.provider-icon[data-provider-slug="baidu"] { visibility: visible; border: 1px solid #d9e5e9; background: #fff; }
.provider-icon[data-provider-slug="openai"]::before { background-image: url("/assets/provider-logos/openai.svg"); }
.provider-icon[data-provider-slug="qwen"]::before { background-image: url("/assets/provider-logos/qwen.svg"); }
.provider-icon[data-provider-slug="google"]::before { background-image: url("/assets/provider-logos/google.svg"); }
.provider-icon[data-provider-slug="anthropic"]::before { background-image: url("/assets/provider-logos/anthropic.svg"); }
.provider-icon[data-provider-slug="mistral"]::before { background-image: url("/assets/provider-logos/mistral.svg"); }
.provider-icon[data-provider-slug="deepseek"]::before { background-image: url("/assets/provider-logos/deepseek.svg"); }
.provider-icon[data-provider-slug="z-ai"]::before { background-image: url("/assets/provider-logos/z-ai.svg"); }
.provider-icon[data-provider-slug="xai"]::before { background-image: url("/assets/provider-logos/xai.png"); }
.provider-icon[data-provider-slug="meta"]::before { background-image: url("/assets/provider-logos/meta.svg"); }
.provider-icon[data-provider-slug="minimax"]::before { background-image: url("/assets/provider-logos/minimax.svg"); }
.provider-icon[data-provider-slug="nvidia"]::before { background-image: url("/assets/provider-logos/nvidia.svg"); }
.provider-icon[data-provider-slug="moonshot-ai"]::before { background-image: url("/assets/provider-logos/moonshot-ai.svg"); }
.provider-icon[data-provider-slug="bytedance-seed"]::before,
.provider-icon[data-provider-slug="bytedance"]::before { background-image: url("/assets/provider-logos/bytedance.svg"); }
.provider-icon[data-provider-slug="amazon"]::before { background-image: url("/assets/provider-logos/amazon.svg"); }
.provider-icon[data-provider-slug="cohere"]::before { background-image: url("/assets/provider-logos/cohere.png"); }
.provider-icon[data-provider-slug="perplexity"]::before { background-image: url("/assets/provider-logos/perplexity.svg"); }
.provider-icon[data-provider-slug="microsoft"]::before { background-image: url("/assets/provider-logos/microsoft.png"); }
.provider-icon[data-provider-slug="openrouter"]::before { background-image: url("/assets/provider-logos/openrouter.svg"); }
.provider-icon[data-provider-slug="xiaomi"]::before { background-image: url("/assets/provider-logos/xiaomi.svg"); }
.provider-icon[data-provider-slug="baidu"]::before { background-image: url("/assets/provider-logos/baidu.svg"); }
.endpoint-mark { color: #264e61; border: 1px solid #d9e5e9; background: #edf5f7; font-size: 10px; font-weight: 760; }
.model-link { display: block; max-width: 260px; overflow: hidden; color: var(--ink); font-size: 12px; font-weight: 680; text-decoration: none; text-overflow: ellipsis; white-space: nowrap; }
.model-link:hover, .quiet-link:hover, .endpoint-link:hover { color: var(--accent); text-decoration: underline; }
.table-model small { display: block; max-width: 280px; margin-top: 3px; overflow: hidden; color: var(--subtle); font-family: var(--mono); font-size: 9px; text-overflow: ellipsis; white-space: nowrap; }
.table-model small b { color: var(--accent); font-family: var(--sans); font-weight: 620; }
.mobile-endpoint { display: none; }
.quiet-link, .endpoint-link { color: #455164; font-size: 11px; text-decoration: none; white-space: nowrap; }
.endpoint-link { color: var(--accent-dark); }
.monthly-value { color: var(--ink); font-weight: 760; }
.source-cell a { display: inline-flex; align-items: center; gap: 4px; color: var(--muted); font-size: 10px; text-decoration: none; white-space: nowrap; }
.source-badge { display: inline-flex; align-items: center; min-height: 22px; padding: 0 7px; border-radius: 3px; font-family: var(--sans); font-size: 9px; font-weight: 750; letter-spacing: .02em; }
.source-direct { color: #05603a; background: #e9f8f0; }
.source-aggregated { color: #265ca7; background: var(--blue-soft); }
.is-incompatible .monthly-value { color: var(--negative); font-family: var(--sans); font-size: 10px; }
.is-incompatible .model-link { color: var(--muted); }
.loading-row, .empty-row { height: 110px !important; color: var(--muted); text-align: center; }
.market-footnote { min-height: 54px; display: flex; justify-content: space-between; align-items: center; gap: 12px; color: var(--muted); font-size: 11px; }
.text-button { min-height: 32px; padding: 0 11px; color: var(--accent-dark); border: 1px solid #b9dcd7; background: var(--paper); font-size: 11px; font-weight: 650; }
.comparison-panel { padding-top: 18px; border-top: 1px solid var(--line); }
.comparison-heading { display: flex; justify-content: space-between; align-items: center; gap: 14px; }
.comparison-heading h3 { margin: 0; font-size: 15px; }
.comparison-heading p { margin: 4px 0 0; color: var(--muted); font-size: 11px; }
.comparison-heading > span { color: var(--muted); font-family: var(--mono); font-size: 11px; }
.comparison-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 9px; }
.comparison-grid:not(:empty) { margin-top: 13px; }
.compare-card { min-width: 0; padding: 12px; border: 1px solid var(--line); background: #fbfcfd; }
.compare-card-head { display: flex; justify-content: space-between; gap: 7px; }
.compare-card-head strong { overflow: hidden; font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.compare-card-head button { padding: 0; color: var(--muted); border: 0; background: transparent; font-size: 17px; }
.compare-provider { margin-top: 4px; color: var(--muted); font-size: 9px; }
.compare-price { margin-top: 10px; font-family: var(--mono); font-size: 20px; font-weight: 720; letter-spacing: -.7px; }
.compare-savings { margin-top: 3px; color: var(--accent); font-size: 9px; }

.source-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--paper); }
.source-strip .shell { min-height: 102px; display: grid; grid-template-columns: 1fr 1fr auto; align-items: center; gap: 34px; }
.source-strip strong, .source-strip span { display: block; }
.source-strip strong { font-size: 13px; }
.source-strip span { margin-top: 4px; color: var(--muted); font-size: 11px; }
.source-strip a { color: var(--accent); font-size: 12px; font-weight: 650; text-decoration: none; }

.footer { margin-top: 42px; border-top: 1px solid var(--line); background: var(--paper); }
.footer-grid { display: grid; grid-template-columns: 1.7fr repeat(3, 1fr); gap: 50px; padding: 42px 0 32px; }
.footer-brand p { max-width: 360px; margin: 12px 0 7px; color: var(--muted); font-size: 12px; line-height: 1.6; }
.footer-brand > span { color: var(--subtle); font-size: 10px; }
.footer-grid > div:not(.footer-brand) { display: flex; flex-direction: column; gap: 10px; }
.footer-grid strong { margin-bottom: 4px; font-size: 12px; }
.footer-grid a:not(.brand) { color: var(--muted); font-size: 11px; text-decoration: none; }
.footer-grid a:not(.brand):hover { color: var(--accent); }
.footer-bottom { min-height: 54px; display: flex; justify-content: space-between; align-items: center; color: var(--subtle); border-top: 1px solid var(--line); font-size: 10px; }

.detail-main { min-height: calc(100vh - 225px); }
.page-intro { border-bottom: 1px solid var(--line); background: var(--paper); }
.page-intro-inner { min-height: 184px; display: flex; justify-content: space-between; align-items: center; gap: 28px; padding-block: 34px; }
.page-intro h1 { font-size: clamp(35px, 3.5vw, 48px); }
.page-stat { display: flex; align-items: center; gap: 9px; flex: 0 0 auto; }
.page-stat > strong { font-family: var(--mono); font-size: 30px; }
.page-stat > span { color: var(--muted); font-size: 12px; }
.detail-content { padding-block: 28px 46px; }
.detail-toolbar { align-items: center; margin-bottom: 14px; }
.detail-toolbar p { margin: 0; color: var(--muted); font-size: 12px; }
.source-link, .primary-link, .back-links a { color: var(--accent); font-size: 12px; font-weight: 620; text-decoration: none; }
.source-link:hover, .primary-link:hover, .back-links a:hover { text-decoration: underline; }
.secondary-table .table-model { min-width: 320px; }
.information-card { margin-top: 20px; padding: 22px; }
.information-card h2, .prose-card h2 { margin: 0; font-size: 19px; letter-spacing: -.3px; }
.information-card p { max-width: 900px; color: var(--muted); font-size: 13px; line-height: 1.65; }
.rate-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.rate-card { padding: 20px; border: 1px solid var(--line); background: var(--paper); }
.rate-card span, .rate-card strong, .rate-card small { display: block; }
.rate-card span { color: var(--muted); font-size: 11px; }
.rate-card strong { margin-top: 8px; font-family: var(--mono); font-size: 29px; }
.rate-card small { margin-top: 3px; color: var(--subtle); font-size: 10px; }
.detail-chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 13px; }
.detail-chip { padding: 6px 9px; color: var(--accent-dark); border: 1px solid #c5e3df; background: var(--accent-soft); font-size: 10px; }
.muted-chip { color: var(--muted); border-color: var(--line); background: #f8fafb; }
.example-line { max-width: 590px; display: flex; justify-content: space-between; gap: 14px; margin: 18px 0 11px; padding: 12px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); font-size: 12px; }
.example-line span { color: var(--muted); }
.example-line strong { font-family: var(--mono); white-space: nowrap; }
.back-links { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 18px; }
.provider-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.provider-card { min-height: 190px; display: block; padding: 18px; color: var(--ink); border: 1px solid var(--line); background: var(--paper); text-decoration: none; }
.provider-card:hover { border-color: #9ed4cd; box-shadow: 0 8px 22px rgba(16,24,40,.05); }
.provider-card > div:first-child { display: flex; justify-content: space-between; align-items: center; }
.provider-arrow { color: var(--subtle); }
.provider-card h2 { margin: 16px 0 6px; font-size: 16px; }
.provider-card > p { min-height: 56px; margin: 0; color: var(--muted); font-size: 11px; line-height: 1.55; }
.provider-card-meta { display: flex; justify-content: space-between; gap: 8px; margin-top: 13px; padding-top: 11px; border-top: 1px solid var(--line); font-size: 10px; }
.provider-card-meta span { color: var(--muted); }
.provider-card-meta strong { font-family: var(--mono); font-size: 9px; }
.endpoint-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.endpoint-card { min-height: 205px; }
.endpoint-card > p { max-width: 550px; min-height: 46px; }
.notice { display: flex; align-items: center; gap: 18px; margin-bottom: 14px; padding: 16px 18px; border-color: #ead8a6; background: var(--amber-soft); }
.notice span { color: var(--muted); font-size: 12px; }
.reading-layout { display: grid; grid-template-columns: minmax(0, 1fr) 285px; align-items: start; gap: 18px; }
.prose-card { padding: 28px; }
.prose-card h2:not(:first-child) { margin-top: 27px; }
.prose-card p { color: var(--muted); font-size: 13px; line-height: 1.75; }
.formula { margin: 14px 0; padding: 14px; overflow-wrap: anywhere; color: var(--accent-dark); border-left: 3px solid var(--accent); background: var(--accent-soft); font-family: var(--mono); font-size: 11px; line-height: 1.6; }
.reading-sidebar { position: sticky; top: 86px; padding: 18px; }
.reading-sidebar > div { display: flex; justify-content: space-between; gap: 10px; padding: 10px 0; font-size: 11px; }
.reading-sidebar > div + div { border-top: 1px solid var(--line); }
.reading-sidebar span { color: var(--muted); }
.reading-sidebar a { display: block; margin-top: 15px; color: var(--accent); font-size: 10px; line-height: 1.5; text-decoration: none; }

@media (max-width: 1220px) {
  .shell { width: min(100% - 40px, 1480px); }
  .workbench { grid-template-columns: 305px minmax(0, 1fr); }
  .topbar nav { gap: 18px; }
  .topbar-status { display: none; }
  .provider-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .comparison-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .topbar-inner { gap: 20px; }
  .topbar nav { gap: 14px; }
  .topbar nav a { font-size: 11px; }
  .intro-inner { align-items: flex-start; flex-direction: column; gap: 22px; }
  .intro-metrics { width: 100%; }
  .intro-metrics div { flex: 1; }
  .workbench { grid-template-columns: 1fr; }
  .calculator-panel { position: static; }
  .input-grid { grid-template-columns: repeat(4, 1fr); }
  .catalog-toolbar { grid-template-columns: 1fr 1fr; }
  .search-box { grid-column: span 2; }
  .source-strip .shell { grid-template-columns: 1fr 1fr; padding-block: 24px; }
  .source-strip a { grid-column: span 2; }
  .provider-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; }
  .footer-grid > div:last-child { grid-column: 2; }
  .reading-layout { grid-template-columns: 1fr; }
  .reading-sidebar { position: static; }
}

@media (max-width: 620px) {
  .shell { width: calc(100% - 24px); }
  .topbar-inner { height: auto; flex-wrap: wrap; gap: 0; padding-top: 7px; }
  .brand { font-size: 20px; }
  .topbar nav { width: 100%; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 0; margin-top: 5px; }
  .topbar nav a, .topbar nav a:nth-child(3), .topbar nav a:nth-child(4), .topbar nav a:nth-child(5), .topbar nav a:nth-child(6) { display: block; padding: 10px 1px 9px; font-size: 9px; text-align: center; }
  .intro-inner { min-height: 0; gap: 17px; padding-block: 24px; }
  .intro h1, .page-intro h1 { font-size: 33px; letter-spacing: -1.4px; }
  .intro p, .page-intro p { font-size: 12px; }
  .intro-metrics div { min-width: 0; padding: 13px 10px; }
  .intro-metrics strong { font-size: 17px; }
  .intro-metrics span { font-size: 8px; }
  .workspace { padding-top: 12px; }
  .calculator-panel, .market-panel { padding: 14px; }
  .panel-heading h2, .market-heading h2 { font-size: 18px; }
  .input-grid { grid-template-columns: 1fr 1fr; }
  .catalog-toolbar { grid-template-columns: 1fr; }
  .search-box { grid-column: auto; }
  .market-heading { align-items: flex-start; flex-direction: column; }
  .catalog-count strong { font-size: 22px; }
  .table-caption { align-items: flex-start; flex-direction: column; gap: 8px; }
  .catalog-table-scroll { max-height: 760px; }
  .price-table { width: 1180px; min-width: 1180px; table-layout: auto; }
  .secondary-table { width: 840px; min-width: 840px; table-layout: auto; }
  .price-table th, .price-table td, .secondary-table th, .secondary-table td { padding-inline: 7px; }
  .price-table th, .secondary-table th { font-size: 9px; }
  .price-table td, .secondary-table td { font-size: 11px; }
  .comparison-grid { grid-template-columns: 1fr 1fr; }
  .source-strip .shell { grid-template-columns: 1fr; gap: 17px; }
  .source-strip a { grid-column: auto; }
  .page-intro-inner { min-height: 0; align-items: flex-start; padding-block: 25px; }
  .page-stat { display: none; }
  .detail-toolbar { align-items: flex-start; flex-direction: column; }
  .rate-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .rate-card { padding: 14px; }
  .rate-card strong { font-size: 23px; }
  .provider-grid, .endpoint-grid { grid-template-columns: 1fr; }
  .provider-card { min-height: 170px; }
  .provider-card > p { min-height: 42px; }
  .notice { align-items: flex-start; flex-direction: column; gap: 5px; }
  .prose-card { padding: 18px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px 20px; padding-block: 30px; }
  .footer-brand { grid-column: span 2; }
  .footer-grid > div:last-child { grid-column: auto; }
  .footer-bottom { align-items: flex-start; flex-direction: column; justify-content: center; gap: 4px; }
}