/* Check.AI — Editorial / Industrial v2 (2026-05-10)
   Design direction: warm paper, deep serif headings, IBM Plex body + mono
   for tabular figures, oxblood accent. Single source of truth: all prior
   patch passes have been collapsed into this file. */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,700;9..144,900&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

*{box-sizing:border-box}

:root{
  /* Color */
  --bg:#efebe1;          /* warm paper */
  --paper:#faf6ec;       /* near-white */
  --soft:#f3eedf;        /* card bg, off-paper */
  --ink:#171614;         /* deep near-black */
  --text:#2a2725;        /* body */
  --muted:#6b665d;       /* warm grey */
  --line:#d4cdbb;        /* warm rule */
  --accent:#8c1e1e;      /* oxblood */
  --accent-2:#1d4a47;    /* dark teal */
  --on-accent:#fbf7eb;
  /* Type */
  --serif:'Fraunces','Georgia',serif;
  --sans:'IBM Plex Sans',system-ui,-apple-system,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,'SFMono-Regular',Menlo,monospace;
  /* Geometry */
  --rail:300px;
  --radius:3px;
  --shadow:0 2px 0 #00000008, 0 12px 28px #1a1612000c;
  font-family:var(--sans);
}

html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-size:16px;line-height:1.55}
button,input,select{font:inherit;color:inherit}
button{cursor:pointer}
a{text-decoration:none;color:var(--accent);text-underline-offset:3px}
a:hover{text-decoration:underline;text-decoration-thickness:1px}
table{font-variant-numeric:tabular-nums lining-nums}
code{font-family:var(--mono);font-size:.92em;background:#00000008;padding:1px 5px;border-radius:2px}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;color:var(--ink);letter-spacing:-.01em;line-height:1.1}

/* ============================================================
   APP LAYOUT (main comparison tool: /, /zh/)
   ============================================================ */
.shell{display:grid;grid-template-columns:var(--rail) minmax(0,1fr);min-height:100vh;background:var(--bg)}
.platform-rail{position:sticky;top:0;height:100vh;overflow:auto;padding:24px 18px;border-right:1px solid var(--line);background:var(--paper)}
.workspace{min-width:0;padding:36px 36px 64px}

/* Brand block */
.brand{display:flex;gap:14px;align-items:center;margin-bottom:24px}
.brand-mark{width:44px;height:44px;border-radius:var(--radius);background:var(--ink);color:var(--on-accent);display:grid;place-items:center;font-family:var(--serif);font-weight:900;font-size:18px;letter-spacing:-.02em}
.brand h1{margin:0;color:var(--ink);font-size:22px;font-weight:900;line-height:1}
.brand p{margin:2px 0 0;color:var(--muted);font-size:12px;letter-spacing:.04em;text-transform:uppercase;font-weight:500}

.eyebrow,.brand p,.search-box,.filter-label,.data-status,.section-head span,.platform-card-top span,.mini-stats,.type-block span,.type-block p,.platform-facts dt,.model-id,.capability-tag,.compare-dialog-head p,.empty-note{color:var(--muted)}
.eyebrow{margin:0;font-size:12px;letter-spacing:.08em;text-transform:uppercase;font-weight:600}

/* Search box */
.search-box{display:grid;gap:6px;margin-bottom:14px;font-size:11px;letter-spacing:.06em;text-transform:uppercase;font-weight:600}
.search-box input{width:100%;min-height:44px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);padding:0 12px;font-size:16px;font-family:var(--sans);color:var(--ink)}
.search-box input::placeholder{color:var(--muted);font-family:var(--mono);font-size:14px}

/* Big CTA */
.global-compare{width:100%;min-height:50px;border:0;border-radius:var(--radius);margin-bottom:18px;background:var(--accent-2);color:var(--on-accent);font-family:var(--sans);font-weight:700;font-size:16px;letter-spacing:.04em;text-transform:uppercase;transition:background .15s}
.global-compare:hover{background:var(--ink)}

/* Chip filters */
.quick-filters,.function-filters,.company-filters,.model-filters,.capability-filters,.tag-row,.source-badges,.feature-icons,.selected-model-list{display:flex;flex-wrap:wrap;gap:6px}
.quick-filters{max-height:88px;overflow:hidden}
.quick-filters.expanded{max-height:none}

.filter-chip,.function-chip,.capability-chip,.company-chip,.model-chip,.tab,.section-link,.source-badge{
  border:1px solid var(--line);background:var(--paper);color:var(--text);
  border-radius:999px;min-height:34px;padding:6px 12px;
  display:inline-flex;align-items:center;justify-content:center;line-height:1.2;
  font-family:var(--sans);font-size:13px;font-weight:500;letter-spacing:.01em;
  transition:border-color .12s,background .12s,color .12s;
}
.filter-chip:hover,.function-chip:hover,.capability-chip:hover,.company-chip:hover,.model-chip:hover,.tab:hover{border-color:var(--ink);color:var(--ink)}
.filter-chip.active,.function-chip.active,.capability-chip.active,.company-chip.active,.model-chip.active,.tab.active{background:var(--ink);color:var(--on-accent);border-color:var(--ink)}
.function-chip.active,.capability-chip.active{background:var(--accent-2);border-color:var(--accent-2)}

.show-more-button,.text-button{border:0;background:transparent;color:var(--accent);font-weight:600;padding:6px 2px;font-size:13px;letter-spacing:.02em}
.show-more-button:hover,.text-button:hover{color:var(--ink)}

.function-filters{margin:8px 0 18px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.filter-label{display:block;font-size:11px;letter-spacing:.08em;text-transform:uppercase;font-weight:600;margin-bottom:8px}

/* Platform cards */
.platform-list{display:grid;gap:6px}
.platform-card{width:100%;text-align:left;border:1px solid transparent;background:transparent;border-radius:var(--radius);padding:10px 12px;display:grid;gap:8px;transition:background .12s,border-color .12s}
.platform-card:hover{background:var(--paper);border-color:var(--line)}
.platform-card.active{background:var(--paper);border-color:var(--ink);box-shadow:inset 3px 0 0 var(--accent)}
.platform-card-top{display:grid;grid-template-columns:36px 1fr;gap:10px;align-items:center}
.platform-card-top img{max-width:32px;max-height:32px;object-fit:contain}
.platform-card-top strong{display:block;color:var(--ink);font-family:var(--serif);font-size:17px;font-weight:700;line-height:1.1}
.platform-card-top span{font-size:11px;letter-spacing:.04em;text-transform:uppercase;font-weight:500}

.feature-icons{padding-left:46px;gap:4px}
.feature-icon{width:22px;height:22px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;background:transparent;color:var(--muted);font-weight:700;font-size:11px}
.feature-icon.on{border-color:var(--accent-2);background:var(--accent-2);color:var(--on-accent)}

.mini-stats{display:grid;grid-template-columns:1fr 1fr;font-size:12px;padding-left:46px;color:var(--muted);font-family:var(--mono)}
.mini-stats b{color:var(--ink);font-weight:600}

/* Workspace topbar */
.topbar{display:flex;justify-content:space-between;gap:24px;margin-bottom:20px;align-items:flex-start;padding-bottom:18px;border-bottom:1px solid var(--line)}
.topbar > div:first-child{min-width:0}
#platformTitle{margin:0;color:var(--ink);font-family:var(--serif);font-size:clamp(48px,6vw,72px);font-weight:900;line-height:.95;letter-spacing:-.025em}
.data-status{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px;font-size:12px;align-items:center}
.data-status>span,.language-switch{display:inline-flex;align-items:center;gap:6px;min-height:30px;border:1px solid var(--line);background:var(--paper);border-radius:999px;padding:0 10px;font-family:var(--mono);font-size:12px;color:var(--muted)}
.language-switch select{border:0;background:transparent;font-family:var(--sans);font-size:12px;color:var(--ink)}

/* Platform summary */
.platform-summary{display:grid;grid-template-columns:1fr minmax(320px,.42fr);gap:32px;padding:24px;margin-bottom:24px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius)}
.summary-main{display:grid;grid-template-columns:64px 1fr;gap:18px}
.logo-wrap{width:64px;height:64px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;display:grid;place-items:center}
.logo-wrap img{max-width:100%;max-height:100%;object-fit:contain}
.summary-main h3{margin:0;color:var(--ink);font-family:var(--serif);font-size:30px;font-weight:700;line-height:1.05}
.summary-main p{margin:6px 0 14px;font-size:17px;line-height:1.5;color:var(--text)}

.platform-actions{margin-top:8px}
.section-link{min-height:32px;background:transparent;border-color:var(--ink);color:var(--ink);border-radius:999px;font-weight:600;padding:4px 14px;font-size:13px}
.section-link:hover{background:var(--ink);color:var(--on-accent);text-decoration:none}

.tag-row{margin-top:10px}
.tag-row span,.source-badge,.capability-tag{border:1px solid var(--line);border-radius:999px;padding:3px 10px;background:transparent;color:var(--muted);font-size:12px;letter-spacing:.02em;font-family:var(--mono)}

/* Facts panel */
.platform-facts{border:0;border-left:1px solid var(--line);background:transparent;padding:0 0 0 24px}
.type-block strong{display:block;color:var(--ink);font-family:var(--serif);font-size:24px;font-weight:700;line-height:1.1}
.type-block span,.type-block p{font-size:12px;letter-spacing:.06em;text-transform:uppercase;font-weight:500;margin:0}
.type-block p{color:var(--muted);margin-top:2px;letter-spacing:0;text-transform:none;font-size:14px}
.platform-facts dl{border-top:1px solid var(--line);margin:14px 0 0;padding-top:14px;display:grid;gap:10px}
.platform-facts dl div{display:flex;justify-content:space-between;gap:16px;align-items:baseline}
.platform-facts dt{font-size:12px;letter-spacing:.06em;text-transform:uppercase;font-weight:500}
.platform-facts dd{margin:0;color:var(--ink);font-family:var(--mono);font-weight:500;text-align:right;font-size:14px}

/* Tabs */
.tabs-row{display:flex;align-items:stretch;gap:14px;margin-bottom:20px}
.tabs{display:flex;flex:0 0 auto;gap:0;overflow-x:auto;scrollbar-width:none;border-bottom:1px solid var(--line);width:auto}
.tab{min-width:auto;min-height:44px;font-size:15px;border-radius:0;border:0;border-bottom:2px solid transparent;background:transparent;color:var(--muted);padding:8px 18px;font-weight:600;letter-spacing:.01em}
.tab:hover{color:var(--ink);background:transparent}
.tab.active{background:transparent;color:var(--ink);border-bottom-color:var(--accent)}

/* Ad slots — hidden */
.ad-slot{border:0;background:transparent!important;border-color:transparent!important;box-shadow:none!important;color:transparent!important;display:none}
.ad-slot *{visibility:hidden!important}

/* Panels */
.panel{display:none}
.panel.active{display:block}
.overview-layout{display:grid;grid-template-columns:1fr 1fr;gap:18px}

/* Section blocks */
.section-block{padding:20px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius)}
.section-head{display:flex;justify-content:space-between;gap:18px;margin-bottom:14px;align-items:baseline}
.section-head h3{margin:0;color:var(--ink);font-family:var(--serif);font-size:22px;font-weight:700}
.section-head span{font-size:11px;letter-spacing:.08em;text-transform:uppercase;font-weight:500}

.use-case-list,.plan-list{display:grid;gap:8px}
.use-case,.plan-card{border:1px solid var(--line);border-radius:var(--radius);background:transparent;padding:14px 16px}
.use-case h4,.plan-card h4{margin:0 0 4px;color:var(--ink);font-family:var(--serif);font-size:17px;font-weight:700}
.use-case p,.plan-card p,.plain-summary{margin:0;font-size:15px;line-height:1.55;color:var(--text)}
.plain-summary{margin-bottom:14px;font-size:16px}

.toolbar{margin-bottom:14px}

/* Tables */
.table-wrap{overflow-x:auto;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;min-width:920px}
th,td{padding:14px 18px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{color:var(--muted);font-weight:600;font-size:11px;letter-spacing:.06em;text-transform:uppercase;background:var(--paper);position:sticky;top:0;z-index:1}
tbody tr{cursor:pointer;transition:background .1s}
tbody tr:hover,tbody tr.selected-row{background:var(--soft)}
tbody tr:last-child td{border-bottom:0}
.sort-button{border:0;background:transparent;color:inherit;font-weight:600;padding:0;font-family:inherit;font-size:inherit;letter-spacing:inherit;text-transform:inherit}
.model-name,.lm-score{color:var(--ink);font-weight:700;font-size:15px;font-family:var(--serif)}
.lm-score{font-family:var(--mono);font-weight:600}
.capability-list{display:flex;flex-wrap:wrap;gap:5px;align-items:center}
.capability,.capability-tag{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--muted);padding:2px 8px;min-height:22px;font-size:11px;line-height:1.15;white-space:nowrap;letter-spacing:.02em;font-family:var(--mono)}

/* Radar */
.six-axis-button{border:0;background:transparent;padding:0}
.six-axis-button svg{width:72px;height:72px}
.radar-grid{fill:none;stroke:var(--line);stroke-width:1.4}
.radar-fill{fill:#8c1e1e26}
.radar-line{fill:none;stroke:var(--accent);stroke-width:2;stroke-linejoin:round}
.large-radar{width:min(100%,720px);margin:0 auto;display:block}
.large-radar text{fill:var(--text);font-size:8px;font-weight:600;font-family:var(--sans)}

/* Compare modal */
.compare-modal,.model-detail-modal{position:fixed;inset:0;display:none;z-index:50}
.compare-modal.open,.model-detail-modal.open{display:block}
.compare-backdrop,.model-detail-backdrop{position:absolute;inset:0;background:#1716148c;backdrop-filter:blur(2px)}
.compare-dialog,.model-detail-dialog{position:absolute;inset:22px;overflow:auto;padding:60px 28px 28px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius)}
.model-detail-dialog{max-width:1100px;margin:0 auto}
.compare-dialog-head{display:flex;justify-content:space-between;gap:20px;margin-bottom:24px;padding-bottom:18px;border-bottom:1px solid var(--line);align-items:flex-end}
.compare-dialog-head p{margin:0;font-size:11px;letter-spacing:.08em;text-transform:uppercase;font-weight:500}
.compare-dialog-head h2{margin:4px 0 0;color:var(--ink);font-family:var(--serif);font-size:44px;line-height:1;font-weight:900;letter-spacing:-.02em}
.close-button{width:44px;height:44px;border:1px solid var(--line);border-radius:50%;background:var(--paper);font-size:28px;color:var(--ink);position:fixed!important;top:18px!important;right:18px!important;z-index:80!important;box-shadow:var(--shadow)}
.close-button:hover{background:var(--ink);color:var(--on-accent)}

.compare-stack{display:grid;gap:18px}
.compare-picker-layout{display:grid;grid-template-columns:minmax(320px,.72fr) minmax(420px,1.35fr);gap:18px;align-items:start}
.compare-controls{display:grid;grid-template-rows:auto auto minmax(0,1fr) auto;gap:14px;height:520px}
.compare-filter-block>span{display:block;color:var(--muted);margin-bottom:6px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;font-weight:500}
.compare-filter-block:has(#modelFilters){display:grid;grid-template-rows:auto minmax(0,1fr);min-height:0}
.company-filters{max-height:126px;overflow-y:auto}
.model-filters,.model-filters.expanded{height:100%;max-height:none;overflow-y:auto;padding-bottom:8px}
.company-chip{border-radius:999px}
.model-chip{min-height:32px;font-size:13px;font-weight:600;padding:5px 10px}

.compare-side-column{display:grid;grid-template-rows:minmax(0,1fr) auto;gap:14px;height:520px}
.selected-models-panel{display:flex;flex-direction:column;min-height:0;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.selected-model-list{align-content:flex-start;max-height:374px;overflow-y:auto;padding-right:4px}
.selected-model-pill{border:1px solid var(--line);background:transparent;border-radius:var(--radius);padding:8px 12px;text-align:left;position:relative;flex:0 1 auto;min-width:0;width:auto;max-width:100%;box-shadow:inset 3px 0 0 var(--accent)}
.selected-model-pill strong{display:block;color:var(--ink);font-family:var(--serif);font-size:15px;font-weight:700;white-space:normal}
.selected-model-pill span{display:block;color:var(--muted);font-size:12px;font-family:var(--mono)}
.model-filter-actions{grid-row:4;display:flex;justify-content:flex-end;align-items:center;gap:10px;margin-top:10px;padding-top:10px;border-top:1px solid var(--line);background:var(--paper);z-index:5}
#modelFilterToggle{display:none!important}
.select-scope-button{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--ink);background:transparent;color:var(--ink);border-radius:999px;min-height:32px;padding:4px 12px;font-weight:600;font-size:13px;white-space:nowrap}
.select-scope-button:hover{background:var(--ink);color:var(--on-accent)}

.table-wrap.compare-table-wrap{max-height:58vh}

/* Share button (injected by share.js) */
.share-compare-btn{margin-left:auto;border:1px solid var(--ink);background:transparent;color:var(--ink);border-radius:999px;min-height:36px;padding:0 14px;font-weight:600;font-size:13px;letter-spacing:.02em;font-family:var(--sans)}
.share-compare-btn:hover{background:var(--ink);color:var(--on-accent)}
.share-compare-btn.copied{background:var(--accent-2);color:var(--on-accent);border-color:var(--accent-2)}

/* Model detail dialog */
.model-detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:14px}
.model-detail-grid>div,.model-detail-section{border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);padding:16px 18px}
.model-detail-grid span{display:block;color:var(--muted);font-size:11px;letter-spacing:.06em;text-transform:uppercase;font-weight:500;margin-bottom:4px}
.model-detail-grid strong{display:block;color:var(--ink);font-family:var(--serif);font-size:24px;font-weight:700}
.model-detail-section{overflow:hidden}
.model-detail-section h3{margin:0 0 10px;color:var(--ink);font-family:var(--serif);font-size:24px;font-weight:700}
.model-detail-section .six-axis-button{display:block;width:100%;cursor:default}
.model-detail-section .six-axis-button svg.large-radar{width:min(100%,720px);height:auto;min-height:420px;margin:0 auto;display:block}
.model-detail-section .large-radar text{font-size:6px;font-weight:600}

/* ============================================================
   TRUST BAR
   ============================================================ */
.trust-bar{background:var(--ink);color:var(--paper);border-bottom:1px solid #000}
.trust-bar-inner{max-width:1320px;margin:0 auto;padding:10px 22px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;font-size:12px}
.trust-claim strong{display:block;color:#fff;font-family:var(--serif);font-size:16px;font-weight:700;letter-spacing:-.005em}
.trust-claim span{display:block;color:#a09a8c;font-size:11px;letter-spacing:.04em;font-family:var(--mono);margin-top:2px}
.trust-meta{display:flex;flex-wrap:wrap;gap:18px;color:#cfc8b8;font-family:var(--mono);font-size:11px;letter-spacing:.02em}
.trust-meta a{color:#e6d9a8;border-bottom:1px dashed #c7b681;font-family:var(--sans);font-size:12px;font-weight:500}
.trust-meta a:hover{color:#fff;border-bottom-color:#fff;text-decoration:none}
.trust-meta b{color:#fff;font-weight:600}

/* ============================================================
   SEO PAGES (topics, articles, compare, about)
   ============================================================ */
.seo-page{background:var(--bg);color:var(--text)}
.seo-header{max-width:780px;margin:0 auto;padding:28px 24px 18px;display:flex;justify-content:space-between;gap:16px;align-items:baseline;border-bottom:1px solid var(--line);flex-wrap:wrap}
.seo-header nav{display:flex;gap:18px;flex-wrap:wrap}
.seo-header nav a{color:var(--muted);font-size:14px;font-weight:500;letter-spacing:.01em}
.seo-header nav a:hover{color:var(--ink);text-decoration:none}
.brand-link{color:var(--ink);font-family:var(--serif);font-size:24px;font-weight:900;letter-spacing:-.02em}
.brand-link:hover{text-decoration:none;color:var(--accent)}

.seo-main{max-width:780px;margin:0 auto;padding:36px 24px 64px}
.seo-main h1{margin:0 0 18px;color:var(--ink);font-family:var(--serif);font-size:clamp(40px,6vw,68px);line-height:1.02;letter-spacing:-.025em;font-weight:900;font-variation-settings:"opsz" 144,"SOFT" 30}
.seo-main h2{margin:0 0 12px;color:var(--ink);font-family:var(--serif);font-size:28px;line-height:1.15;letter-spacing:-.01em;font-weight:700}
.seo-main h3{margin:18px 0 8px;color:var(--ink);font-family:var(--serif);font-size:20px;font-weight:700}
.seo-lead{max-width:680px;margin:0 0 28px;font-size:20px;line-height:1.5;color:var(--text);font-weight:400}
.seo-lead strong{color:var(--ink);font-weight:600;background:linear-gradient(transparent 60%,#f3d6a366 60%)}

.seo-card{border:0;border-top:1px solid var(--line);background:transparent;box-shadow:none;padding:28px 0;margin:0;border-radius:0}
.seo-card:first-of-type{border-top:0;padding-top:8px}
.seo-card p,.seo-card li{font-size:17px;line-height:1.6;color:var(--text)}
.seo-card p+p{margin-top:10px}
.seo-card ul,.seo-card ol{margin:12px 0 0;padding-left:24px}
.seo-card ul li,.seo-card ol li{margin-bottom:6px}
.seo-card strong{color:var(--ink);font-weight:600}
.seo-card a{color:var(--accent);font-weight:500}
.seo-card table{min-width:0;width:100%;margin-top:14px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);overflow:hidden}
.seo-card table th{background:var(--soft);color:var(--ink);font-size:12px;letter-spacing:.06em;text-transform:uppercase;font-weight:600;padding:10px 12px;border-bottom:1px solid var(--line)}
.seo-card table td{padding:10px 12px;font-size:14px;font-family:var(--mono);border-bottom:1px solid var(--line);vertical-align:top}
.seo-card table td:first-child{font-family:var(--sans);font-weight:500;color:var(--ink)}
.seo-card table tr:last-child td{border-bottom:0}
.seo-card .section-link{display:inline-flex;margin-top:14px}

.seo-footer{max-width:780px;margin:0 auto;padding:24px;border-top:1px solid var(--line);color:var(--muted);font-size:14px;display:flex;gap:14px;flex-wrap:wrap}
.seo-footer a{color:var(--accent);font-weight:500}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media(max-width:1180px){
  :root{--rail:260px}
  .platform-summary,.overview-layout,.compare-picker-layout{grid-template-columns:1fr}
  .platform-facts{border-left:0;border-top:1px solid var(--line);padding:18px 0 0}
  .tabs-row{flex-wrap:wrap}
  .tabs{flex:1 1 100%}
}

@media(max-width:760px){
  .shell{grid-template-columns:1fr}
  .platform-rail{position:relative;height:auto;border-right:0;border-bottom:1px solid var(--line)}
  .workspace{padding:24px 18px}
  .topbar{display:grid}
  .data-status{justify-content:flex-start}
  #platformTitle{font-size:46px}
  .summary-main{grid-template-columns:1fr}
  .tab{flex:1;font-size:14px;min-width:auto}
  .tabs{width:100%}
  .model-detail-grid{grid-template-columns:1fr}
  .compare-dialog,.model-detail-dialog{inset:8px;padding:48px 16px 16px}
  .compare-dialog-head h2{font-size:32px}
  .seo-header{align-items:flex-start;flex-direction:column;padding:20px 18px 14px}
  .seo-main{padding:24px 18px 44px}
  .seo-lead{font-size:18px}
  .trust-bar-inner{padding:10px 16px}
  .trust-claim strong{font-size:14px}
  .trust-meta{font-size:11px;gap:10px}
  .compare-controls,.compare-side-column{height:auto}
  .model-filters{max-height:240px}
}

/* ============================================================
   POLISH v2.1 — P0 zh-CN H1, P1 link hover, P2 trust bar tightening
   ============================================================ */

/* P0: CJK headings — Fraunces doesn't include CJK glyphs, so they fall back
   to a system Han font which renders heavy at large sizes. Reduce size + weight
   when the page is Chinese-tagged. */
html[lang="zh-CN"] .seo-main h1{
  font-size:clamp(32px,4.6vw,52px);
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1.15;
}
html[lang="zh-CN"] .seo-main h2{font-size:24px;line-height:1.2}
html[lang="zh-CN"] .compare-dialog-head h2{font-size:36px;line-height:1.1}
html[lang="zh-CN"] #platformTitle{font-size:clamp(38px,5vw,56px);line-height:1}
html[lang="zh-CN"] .summary-main h3{font-size:24px;line-height:1.2}

/* P1: link hover — slight color + underline thickness change for feedback */
a{transition:color .12s,text-decoration-color .12s}
.seo-card a,.seo-main a{color:var(--accent);text-decoration:underline;text-decoration-color:transparent;text-decoration-thickness:1px;text-underline-offset:3px}
.seo-card a:hover,.seo-main a:hover{text-decoration-color:var(--accent);color:#6c1414}
.trust-meta a:hover{color:#fff;border-bottom-color:#fff;text-decoration:none}
.brand-link:hover{color:var(--accent);text-decoration:none}

/* P2: trust bar — tighten rhythm + thin top accent rule */
.trust-bar{position:relative;border-top:2px solid var(--accent)}
.trust-bar-inner{padding:8px 22px;gap:18px}
.trust-claim strong{font-size:15px}
.trust-claim span{font-size:10.5px;margin-top:1px;letter-spacing:.06em;text-transform:uppercase}
.trust-meta{gap:14px}
.trust-meta>span{display:inline-flex;align-items:center;gap:5px}
@media(max-width:760px){
  .trust-bar-inner{padding:8px 14px;gap:8px}
  .trust-claim strong{font-size:13px}
  .trust-claim span{font-size:10px}
}

/* ============================================================
   ARTICLE TABLE OF CONTENTS (2026-05-12)
   ============================================================ */
.article-toc{
  margin:24px 0 8px;
  padding:18px 22px;
  border:1px solid var(--line);
  background:var(--paper);
  border-radius:var(--radius);
}
.article-toc-label{
  font-size:11px;letter-spacing:.08em;text-transform:uppercase;font-weight:600;
  color:var(--muted);margin:0 0 10px;
}
.article-toc ol{margin:0;padding-left:22px;counter-reset:toc-item}
.article-toc li{margin:5px 0;font-size:15px;line-height:1.5}
.article-toc a{color:var(--ink);text-decoration:none;font-weight:500}
.article-toc a:hover{color:var(--accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.seo-card[id]{scroll-margin-top:20px}
h2[id],h3[id]{scroll-margin-top:20px}

/* ============================================================
   MOBILE TABLE SCROLL + TAP TARGETS (2026-05-11)
   ============================================================ */
@media(max-width:640px){
  .seo-card table{
    display:block;
    overflow-x:auto;
    -webkit-overflow-scrolling:touch;
    white-space:nowrap;
    max-width:100%;
  }
  .seo-card table th,
  .seo-card table td{padding:8px 10px;font-size:13px}
  /* tap-target floor on nav links */
  .seo-header nav a{min-height:44px;display:inline-flex;align-items:center;padding:0 10px}
  /* tighten huge serif h1 on small screens */
  .seo-main h1{font-size:clamp(28px,7vw,38px);line-height:1.15}
  .seo-lead{font-size:16px}
}