/* Hallmark · macrostructure: Catalogue · tone: modern-minimal · theme: Coral · nav: N3 · footer: Ft2 */
/* Hallmark · pre-emit critique: P4 H4 E4 S4 R4 V5 · primary text contrast: pass · mobile: reviewed at 320, 375, 414, 768 */
* { box-sizing: border-box; }
html, body { margin: 0; overflow-x: clip; }
body { background: var(--color-paper); color: var(--color-ink); font-family: var(--font-body); font-size: 14px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
button, input, textarea, select { font: inherit; }
button, a, input, textarea, select { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; color: inherit; }
button, select { white-space: nowrap; }
button { border: 0; background: none; }
a { color: inherit; text-decoration: none; }
button:active, .button:active { transform: translateY(1px); }
button:disabled { cursor: wait; opacity: .55; }
:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 3px; }
input, textarea, select { border: 1px solid var(--color-rule); color: var(--color-ink); background: var(--color-surface); border-radius: var(--radius-sm); }
input::placeholder, textarea::placeholder { color: var(--color-muted); opacity: 1; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-family: var(--font-display); overflow-wrap: anywhere; min-width: 0; }
h1 { font-size: clamp(25px, 2.4vw, 34px); letter-spacing: -.05em; font-weight: 650; line-height: 1.35; }
svg.icon { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; flex: 0 0 auto; vertical-align: middle; }
[data-icon] { display: inline-flex; align-items: center; justify-content: center; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 100; padding: 12px; background: var(--color-ink); color: var(--color-paper); transform: translateY(-160%); }
.skip-link:focus { transform: none; }
.sidebar { display: none; }
.topbar { min-height: 72px; border-bottom: 1px solid var(--color-rule); display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); padding: 12px 20px; background: var(--color-surface); color: var(--color-ink); }
.breadcrumbs { display: flex; gap: var(--space-3); align-items: center; white-space: nowrap; font-size: 13px; }
.breadcrumbs strong { font-weight: 500; }
.breadcrumb-slash { color: var(--color-muted); }
.desktop-label, .preview-badge { display: none; }
.mobile-brand { font-size: 21px; font-weight: 700; letter-spacing: -.08em; }
.top-actions { display: flex; gap: var(--space-6); align-items: center; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: var(--space-2); padding: 10px 16px; min-height: 44px; border-radius: var(--radius-sm); font-size: 13px; font-weight: 550; white-space: nowrap; border: 1px solid transparent; transition: transform var(--dur-micro) var(--ease-out), opacity var(--dur-micro) var(--ease-out); }
.button-dark { background: var(--color-ink); color: var(--color-paper); }
.button-accent { background: var(--color-accent); color: var(--color-accent-ink); }
.button-outline { background: var(--color-surface); color: var(--color-ink); border-color: var(--color-rule); }
.button svg { width: 17px; height: 17px; }
main { padding: 28px 20px 104px; max-width: 1640px; margin: 0 auto; }
.page-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: var(--space-5); margin-bottom: 28px; }
.page-heading p { color: var(--color-muted); font-size: 13px; margin-top: 10px; }
.accent-period { color: var(--color-accent); margin-left: 4px; }
.edition { display: none; font-size: 10px; letter-spacing: .14em; color: var(--color-muted); margin-bottom: 5px; }
.ai-banner { display: flex; flex-wrap: wrap; gap: var(--space-4); position: relative; padding: var(--space-6); border-radius: var(--radius-md); background: var(--color-banner); color: var(--color-ink); margin-bottom: var(--space-6); }
.ai-banner-copy { display: flex; align-items: flex-start; gap: 12px; }
.ai-icon { color: var(--color-accent); margin-top: 3px; }
.ai-icon svg { width: 26px; height: 26px; }
.ai-banner h2 { font-size: 18px; font-weight: 600; letter-spacing: -.025em; }
.ai-banner-copy p { font-size: 12px; color: var(--color-muted); margin-top: 4px; }
.quick-ai { width: 100%; display: flex; flex-wrap: nowrap; gap: var(--space-2); }
.quick-ai input { width: 0; flex: 1; min-width: 0; min-height: 48px; padding: 12px; font-size: 12px; }
.quick-ai .button { width: auto; padding-inline: 12px; }
.banner-footnote { font-size: 10px; color: var(--color-muted); width: 100%; }
.category-tabs { display: flex; overflow-x: auto; gap: var(--space-6); border-bottom: 1px solid var(--color-rule); margin-bottom: var(--space-5); scrollbar-width: none; }
.category-tabs::-webkit-scrollbar { display: none; }
.category-tab { flex-shrink: 0; min-height: 52px; padding: 0 0 13px; font-size: 13px; color: var(--color-muted); position: relative; }
.category-tab.active { color: var(--color-ink); font-weight: 600; }
.category-tab.active::after { content: ""; position: absolute; height: 2px; background: var(--color-accent); bottom: 0; left: 0; right: 0; }
.category-tab span { display: inline-block; padding: 0 6px; background: var(--color-soft); color: var(--color-neutral); margin-left: 3px; font-size: 10px; border-radius: 4px; }
.filter-bar { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-3); }
.filter-search { display: flex; gap: var(--space-2); align-items: center; position: relative; min-width: 0; width: 100%; }
.filter-search > [data-icon] { position: absolute; left: 12px; pointer-events: none; color: var(--color-muted); }
.filter-search svg { width: 17px; height: 17px; }
.filter-search input { height: 44px; padding: 10px 36px; width: 100%; border-color: var(--color-rule); font-size: 12px; }
.filter-search kbd { position: absolute; right: 12px; background: var(--color-paper); color: var(--color-muted); font-size: 11px; width: 20px; height: 22px; line-height: 20px; text-align: center; border: 1px solid var(--color-rule); border-radius: 4px; font-family: var(--font-mono); }
.filter-controls { display: flex; gap: var(--space-2); width: 100%; }
.filter-controls select { flex: 1; height: 44px; font-size: 12px; padding: 8px 10px; min-width: 0; }
.view-switch { border: 1px solid var(--color-rule); border-radius: var(--radius-sm); display: flex; background: var(--color-surface); color: var(--color-muted); }
.icon-button { width: 44px; height: 44px; display: inline-flex; align-items: center; justify-content: center; border-radius: var(--radius-sm); flex-shrink: 0; color: var(--color-neutral); }
.view-switch .icon-button { width: 44px; height: 44px; }
.view-switch .icon { width: 16px; height: 16px; }
.icon-button.selected { background: var(--color-soft); color: var(--color-ink); }
.result-line { display: flex; align-items: center; gap: var(--space-3); justify-content: space-between; min-height: 52px; font-size: 12px; color: var(--color-muted); }
.result-hint { display: none; font-size: 11px; }
.text-button { display: inline-flex; gap: var(--space-2); align-items: center; min-height: 44px; color: var(--color-accent); font-size: 12px; }
.text-button svg { width: 14px; height: 14px; }
.case-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 32px 24px; }
.case-card { min-width: 0; position: relative; }
.cover-link { display: block; width: 100%; border-radius: var(--radius-md); overflow: hidden; background: var(--color-soft); color: var(--color-ink); padding: 0; text-align: left; position: relative; aspect-ratio: 1.5; }
.cover-link:focus-visible { outline-offset: 4px; }
.cover-image { width: 100%; height: 100%; display: block; object-fit: cover; transition: transform var(--dur-long) var(--ease-out); }
.cover-link::after { position: absolute; inset: 0; content: ""; border: 1px solid var(--color-shadow); border-radius: inherit; pointer-events: none; }
.cover-type { position: absolute; bottom: 12px; left: 12px; font-size: 10px; border-radius: 4px; padding: 3px 7px; background: var(--color-image-overlay); color: var(--color-on-image); display: inline-flex; align-items: center; gap: 4px; }
.cover-type svg { width: 12px; height: 12px; }
.favorite-button { position: absolute; top: 8px; right: 8px; z-index: 1; width: 44px; height: 44px; display: grid; place-items: center; border-radius: 50%; background: var(--color-surface); color: var(--color-ink); box-shadow: 0 2px 8px var(--color-shadow); }
.favorite-button svg { width: 18px; height: 18px; }
.favorite-button.saved { background: var(--color-accent-soft); color: var(--color-accent); }
.favorite-button.saved svg { fill: currentColor; }
.card-text { padding-top: 14px; }
.card-meta { display: flex; gap: 8px; align-items: center; font-size: 10px; color: var(--color-muted); margin-bottom: 6px; }
.card-brand { font-weight: 600; color: var(--color-neutral); }
.meta-dot { width: 2px; height: 2px; border-radius: 50%; background: currentColor; }
.card-title { padding: 0; min-height: 48px; display: block; text-align: left; font-size: 15px; font-weight: 600; line-height: 1.6; white-space: normal; }
.card-title span { display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden; }
.card-bottom { display: flex; justify-content: space-between; align-items: center; margin-top: 10px; gap: 8px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; min-width: 0; }
.tag { font-size: 10px; line-height: 21px; padding: 0 7px; border-radius: 4px; background: var(--color-soft); color: var(--color-neutral); white-space: nowrap; }
.card-source { font-size: 10px; color: var(--color-muted); white-space: nowrap; }
.typographic-cover { height: 100%; width: 100%; padding: 24px; display: flex; flex-direction: column; position: relative; overflow: hidden; }
.cover-caption { position: absolute; bottom: 12px; right: 12px; font-size: 9px; opacity: .8; }
.cover-kicker { font-size: 10px; letter-spacing: .08em; }
.cover-trae { background: var(--color-cover-dark); color: var(--color-cover-lime); }
.cover-trae .cover-big { font-family: var(--font-mono); font-size: clamp(52px, 6vw, 94px); line-height: 1; font-weight: 600; letter-spacing: -.08em; margin-top: 16px; }
.cover-trae .cover-sub { font-size: 14px; margin-top: 4px; letter-spacing: .2em; }
.cover-trae .cover-bracket { position: absolute; right: 27px; top: 28px; font-family: var(--font-mono); font-size: 120px; opacity: .13; line-height: 1; }
.cover-yunnan { background: var(--color-cover-pine); color: var(--color-cover-sage); }
.cover-yunnan .cover-big { font-family: var(--font-editorial); font-size: clamp(27px, 2.3vw, 43px); line-height: 1.55; letter-spacing: .12em; margin-top: 20px; }
.cover-yunnan .cover-sub { display: none; }
.cover-kuaishou { background: var(--color-cover-red); color: var(--color-cover-pink); }
.cover-kuaishou .cover-big { font-family: var(--font-editorial); font-weight: 700; font-size: clamp(30px, 3vw, 48px); line-height: 1.35; letter-spacing: .1em; margin-top: 18px; }
.cover-kuaishou .cover-sub { display: none; }
.import-card { border: 1px dashed var(--color-rule); min-height: 240px; border-radius: var(--radius-md); display: flex; align-items: flex-start; flex-direction: column; justify-content: center; gap: 12px; padding: 32px; }
.import-card > [data-icon] { color: var(--color-muted); margin-bottom: 8px; }
.import-card h2 { font-size: 18px; font-weight: 550; letter-spacing: -.03em; }
.import-card p { font-size: 12px; color: var(--color-muted); max-width: 220px; }
.import-card button { padding-left: 0; }
.case-grid.is-list { grid-template-columns: minmax(0,1fr); gap: 16px; }
.is-list .case-card { display: grid; grid-template-columns: minmax(0, 110px) minmax(0, 1fr); gap: 16px; border-bottom: 1px solid var(--color-rule); padding-bottom: 16px; }
.is-list .cover-link { aspect-ratio: 1; }
.is-list .card-text { padding: 0; }
.is-list .favorite-button { top: 4px; left: 64px; right: auto; width: 38px; height: 38px; }
.is-list .cover-type, .is-list .cover-caption, .is-list .cover-kicker, .is-list .cover-sub, .is-list .cover-bracket { display: none; }
.is-list .typographic-cover { padding: 12px; justify-content: center; }
.is-list .cover-big { font-size: 23px; margin: 0; letter-spacing: -.03em; }
.is-list .card-bottom { flex-wrap: wrap; }
.is-list .card-title { font-size: 14px; min-height: 44px; }
.is-list .import-card { display: none; }
.page-footer { border-top: 1px solid var(--color-rule); margin-top: 40px; padding-top: 20px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; color: var(--color-muted); font-size: 10px; }
.mobile-nav { position: fixed; bottom: 0; left: 0; right: 0; z-index: 5; background: var(--color-surface); color: var(--color-neutral); border-top: 1px solid var(--color-rule); display: flex; justify-content: space-around; padding: 8px 8px max(8px, env(safe-area-inset-bottom)); }
.mobile-nav button { min-width: 60px; min-height: 48px; display: flex; flex-direction: column; align-items: center; gap: 3px; font-size: 10px; }
.mobile-nav .active { color: var(--color-accent); }
.empty-state { text-align: center; padding: 64px 12px; }
.empty-state > [data-icon] { color: var(--color-muted); margin-bottom: 16px; }
.empty-state svg { width: 36px; height: 36px; stroke-width: 1.3; }
.empty-state h2 { font-size: 20px; }
.empty-state p { color: var(--color-muted); margin: 8px 0 24px; font-size: 13px; }
.ai-workspace { max-width: 900px; margin: 0 auto; padding-top: 20px; }
.ai-page-intro { text-align: center; margin: 12px 0 32px; }
.large-ai-symbol { display: flex; margin: 0 auto 16px; color: var(--color-accent); }
.large-ai-symbol svg { width: 40px; height: 40px; stroke-width: 1.3; }
.quiet-label { color: var(--color-accent); font-size: 12px; }
.ai-page-intro h1 { margin-top: 12px; }
.ai-page-intro p { font-size: 13px; color: var(--color-muted); margin-top: 12px; }
.ai-composer { background: var(--color-surface); color: var(--color-ink); border: 1px solid var(--color-accent-rule); border-radius: var(--radius-lg); padding: 20px; box-shadow: 0 6px 24px var(--color-shadow); }
.ai-composer > label { display: block; font-size: 12px; font-weight: 600; margin-bottom: 12px; }
.ai-composer textarea { width: 100%; min-height: 104px; resize: vertical; border: 1px solid transparent; padding: 8px; margin-left: -8px; line-height: 1.9; font-size: 14px; }
.composer-footer { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; border-top: 1px solid var(--color-rule); padding-top: 16px; margin-top: 12px; }
.composer-footer > span { color: var(--color-muted); font-size: 11px; display: flex; align-items: center; gap: 6px; }
.composer-footer svg { width: 15px; height: 15px; }
.prompt-chips { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; align-items: center; padding: 24px 0 12px; }
.prompt-chips > span { color: var(--color-muted); font-size: 11px; }
.prompt-chips button { border: 1px solid var(--color-rule); border-radius: 24px; padding: 10px 12px; min-height: 44px; display: flex; align-items: center; gap: 8px; font-size: 11px; }
.prompt-chips svg { width: 12px; height: 12px; }
.demo-note { font-size: 11px; color: var(--color-muted); line-height: 1.8; margin-top: 16px; display: flex; align-items: flex-start; gap: 6px; }
.demo-note svg { width: 14px; height: 14px; margin-top: 3px; }
.ai-workspace > .demo-note { justify-content: center; }
.ai-results { margin-top: 40px; border-top: 1px solid var(--color-rule); padding-top: 24px; }
.ai-results h2 { font-size: 20px; font-weight: 600; }
.ai-results > p { color: var(--color-muted); font-size: 12px; margin-top: 8px; }
.match-card { display: grid; grid-template-columns: minmax(0,1fr); gap: 20px; padding: 24px 0; border-bottom: 1px solid var(--color-rule); }
.match-card .cover-link { aspect-ratio: 1.75; }
.match-label { font-size: 11px; color: var(--color-accent); font-weight: 600; }
.match-card h3 { margin-top: 8px; font-size: 17px; line-height: 1.65; }
.match-card p { margin-top: 12px; font-size: 13px; color: var(--color-neutral); }
.match-card .text-button { margin-top: 6px; }
.import-layout { display: grid; grid-template-columns: minmax(0,1fr); gap: 32px; }
.drop-zone { border: 1px dashed var(--color-accent-rule); border-radius: var(--radius-lg); padding: 48px 24px; display: flex; flex-direction: column; align-items: center; text-align: center; background: var(--color-surface); color: var(--color-ink); }
.drop-zone.dragover { background: var(--color-accent-soft); color: var(--color-ink); }
.drop-zone > [data-icon] { color: var(--color-accent); margin-bottom: 16px; }
.drop-zone > [data-icon] svg { width: 36px; height: 36px; stroke-width: 1.3; }
.drop-zone h2 { font-size: 20px; }
.drop-zone p { color: var(--color-muted); font-size: 12px; margin-top: 8px; }
.file-label { position: relative; margin-top: 24px; cursor: pointer; overflow: hidden; }
.file-label input { position: absolute; opacity: 0; inset: 0; cursor: pointer; width: 100%; }
.file-label:focus-within { outline: 2px solid var(--color-focus); outline-offset: 3px; }
.drop-note { margin-top: 16px; font-size: 10px; color: var(--color-muted); }
.import-explainer { padding-top: 20px; }
.import-explainer h2 { font-size: 18px; font-weight: 600; }
.import-explainer ol { padding: 0; list-style: none; margin: 24px 0 0; }
.import-explainer li { display: flex; gap: 16px; margin-top: 24px; }
.import-explainer li > span { font-family: var(--font-mono); color: var(--color-accent); font-size: 12px; margin-top: 3px; }
.import-explainer strong { font-size: 13px; font-weight: 550; }
.import-explainer p { color: var(--color-muted); font-size: 12px; margin-top: 4px; }
.upload-heading { display: flex; align-items: center; justify-content: space-between; margin-top: 40px; border-bottom: 1px solid var(--color-rule); padding-bottom: 12px; min-height: 56px; }
.upload-heading h2 { font-size: 17px; font-weight: 600; }
.upload-heading h2 span { color: var(--color-muted); font-size: 12px; margin-left: 8px; }
.upload-empty { padding: 32px 0; color: var(--color-muted); font-size: 13px; }
.upload-row { display: flex; align-items: center; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--color-rule); }
.upload-row > [data-icon] { color: var(--color-accent); }
.upload-row div { flex: 1; min-width: 0; }
.upload-row strong { font-size: 13px; display: block; overflow-wrap: anywhere; }
.upload-row p { font-size: 11px; color: var(--color-muted); margin-top: 4px; }
.upload-row > span:last-of-type { font-size: 11px; color: var(--color-muted); }
dialog { position: fixed; inset: 0; margin: auto; height: fit-content; max-height: calc(100dvh - 32px); width: min(1080px, calc(100% - 24px)); padding: 0; background: var(--color-surface); color: var(--color-ink); border: 0; border-radius: var(--radius-lg); box-shadow: 0 24px 80px var(--color-shadow); overscroll-behavior: contain; }
dialog::backdrop { background: var(--color-overlay); }
dialog[open] { animation: dialog-enter var(--dur-short) var(--ease-out); }
@keyframes dialog-enter { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
body:has(dialog[open]) { overflow-y: hidden; }
.detail-topbar { display: flex; align-items: center; justify-content: space-between; padding: 12px 20px; border-bottom: 1px solid var(--color-rule); font-size: 12px; color: var(--color-muted); position: sticky; top: 0; z-index: 2; background: var(--color-surface); }
.detail-topbar > span { display: flex; align-items: center; gap: 8px; }
.detail-body { display: grid; grid-template-columns: minmax(0,1fr); }
.detail-preview { padding: 20px; background: var(--color-paper); color: var(--color-ink); }
.detail-preview figure { margin: 0; }
.detail-preview img { display: block; width: 100%; height: auto; border-radius: var(--radius-sm); }
.detail-preview .typographic-cover { aspect-ratio: 1.4; height: auto; min-height: 240px; border-radius: var(--radius-sm); padding: 28px; }
.detail-preview .cover-big { font-size: clamp(20px, 4.5vw, 40px); letter-spacing: .07em; }
.detail-preview .cover-trae .cover-big { font-size: clamp(48px, 10vw, 82px); }
.detail-preview figcaption { font-size: 10px; color: var(--color-muted); margin-top: 12px; text-align: center; }
.preview-file-note { display: flex; gap: 8px; padding: 16px 0; border-top: 1px solid var(--color-rule); margin-top: 24px; color: var(--color-muted); font-size: 12px; }
.preview-file-note svg { width: 16px; height: 16px; margin-top: 3px; }
.detail-info { padding: 24px; }
.detail-info .card-meta { margin-bottom: 12px; font-size: 11px; }
.detail-info h2 { font-size: 24px; line-height: 1.5; letter-spacing: -.03em; }
.detail-info > .tags { margin-top: 16px; }
.detail-description { margin-top: 24px; font-size: 13px; color: var(--color-neutral); line-height: 1.9; }
.detail-info h3 { font-size: 14px; margin-bottom: 12px; font-weight: 600; }
.insights { margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--color-rule); }
.insights h3 { display: flex; align-items: center; gap: 8px; }
.insights h3 svg { width: 16px; height: 16px; color: var(--color-accent); }
.insights h3 small { font-size: 9px; font-weight: 400; color: var(--color-muted); margin-left: auto; }
.insight-row { display: flex; gap: 12px; margin-top: 14px; }
.insight-row > span { color: var(--color-accent); font-family: var(--font-mono); font-size: 11px; margin-top: 3px; }
.insight-row p { font-size: 12px; line-height: 1.85; color: var(--color-neutral); }
.detail-facts { display: grid; grid-template-columns: 64px minmax(0,1fr); gap: 8px 16px; font-size: 11px; margin: 28px 0 0; }
.detail-facts dt { color: var(--color-muted); }
.detail-facts dd { margin: 0; }
.detail-actions { display: flex; flex-wrap: wrap; gap: 8px; border-top: 1px solid var(--color-rule); padding-top: 24px; margin-top: 24px; }
.detail-actions .button { flex: 1; }
.detail-actions .source-link { display: flex; width: 100%; justify-content: center; align-items: center; gap: 6px; min-height: 44px; font-size: 11px; color: var(--color-muted); white-space: nowrap; }
.source-link svg { width: 13px; height: 13px; }
.toast { position: fixed; bottom: 88px; left: 50%; transform: translateX(-50%) translateY(12px); opacity: 0; pointer-events: none; z-index: 100; background: var(--color-ink); color: var(--color-paper); padding: 12px 20px; border-radius: var(--radius-sm); font-size: 12px; max-width: calc(100% - 32px); text-align: center; transition: transform var(--dur-short) var(--ease-out), opacity var(--dur-short) var(--ease-out); }
.toast.visible { opacity: 1; transform: translateX(-50%) translateY(0); }
@media (hover: hover) and (pointer: fine) {
  .button:hover { opacity: .9; }
  .cover-link:hover .cover-image { transform: scale(1.025); }
  .card-title:hover, .source-link:hover { color: var(--color-accent); }
  .category-tab:hover { color: var(--color-ink); }
  .icon-button:hover, .topic-link:hover, .prompt-chips button:hover { background: var(--color-soft); color: var(--color-ink); }
  .nav-item:not(.active):hover { background: var(--color-soft); color: var(--color-ink); }
  input:hover, textarea:hover, select:hover { background: var(--color-paper); color: var(--color-ink); }
}
@media (min-width: 40rem) {
  main { padding: 32px 32px 104px; }
  .topbar { padding-inline: 32px; }
  .preview-badge { display: inline-flex; align-items: center; gap: 6px; font-size: 11px; color: var(--color-muted); }
  .preview-badge > span { width: 5px; height: 5px; border-radius: 50%; background: var(--color-accent); }
  .quick-ai { flex-wrap: nowrap; }
  .quick-ai input { flex: 1; }
  .quick-ai .button { width: auto; }
  .case-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .filter-search { max-width: 310px; flex: 1; }
  .filter-controls { width: auto; }
  .filter-controls select { flex: none; }
  .result-hint { display: inline; margin-left: auto; }
  .match-card { grid-template-columns: minmax(0, 240px) minmax(0, 1fr); }
  .match-card .cover-big { font-size: 48px; }
  .match-card .cover-yunnan .cover-big, .match-card .cover-kuaishou .cover-big { font-size: 25px; }
  .match-card .cover-sub { display: none; }
  .is-list .case-card { grid-template-columns: minmax(0, 180px) minmax(0, 1fr); gap: 24px; }
  .is-list .cover-link { aspect-ratio: 1.5; }
  .is-list .favorite-button { left: 134px; }
  .is-list .card-text { padding-top: 4px; }
}
@media (min-width: 60rem) {
  .app-shell { display: grid; grid-template-columns: 220px minmax(0,1fr); }
  .sidebar { display: flex; flex-direction: column; position: sticky; top: 0; height: 100dvh; padding: 32px 16px 0; border-right: 1px solid var(--color-rule); background: var(--color-surface); color: var(--color-ink); }
  .brand { display: flex; gap: 12px; align-items: center; padding: 0 16px; width: fit-content; font-size: 27px; line-height: 1.15; font-weight: 700; letter-spacing: -.07em; }
  .brand-en { display: block; font-size: 8px; letter-spacing: .18em; margin-top: 5px; font-weight: 500; }
  .brand-mark { width: 30px; height: 34px; position: relative; display: block; transform: rotate(-12deg); }
  .brand-mark i { display: block; position: absolute; width: 11px; height: 28px; background: var(--color-accent); top: 3px; left: 2px; border-radius: 2px; }
  .brand-mark i:nth-child(2) { transform: rotate(55deg); left: 12px; top: 3px; }
  .brand-mark i:nth-child(3) { width: 9px; height: 9px; left: 23px; top: 24px; }
  .workspace { display: flex; gap: 10px; align-items: center; padding: 12px 10px; border: 1px solid var(--color-rule); border-radius: var(--radius-sm); margin-top: 34px; margin-bottom: 20px; }
  .workspace-mark { background: var(--color-soft); color: var(--color-neutral); height: 30px; width: 30px; border-radius: 5px; display: grid; place-items: center; font-size: 12px; }
  .workspace strong { font-size: 11px; display: block; font-weight: 600; }
  .workspace div > span { font-size: 9px; color: var(--color-muted); display: block; margin-top: 1px; }
  .private-dot { width: 5px; height: 5px; background: var(--color-green); border-radius: 50%; margin-left: auto; }
  .nav-primary { display: flex; flex-direction: column; gap: 6px; }
  .nav-item { display: flex; align-items: center; gap: 12px; text-align: left; padding: 12px 14px; border-radius: var(--radius-sm); font-size: 12px; min-height: 46px; color: var(--color-neutral); }
  .nav-item svg { width: 18px; height: 18px; }
  .nav-item.active { background: var(--color-accent-soft); color: var(--color-accent); font-weight: 600; }
  .nav-count { margin-left: auto; font-size: 10px; color: inherit; }
  .new-label { font-family: var(--font-mono); font-size: 8px; color: var(--color-accent); margin-left: auto; }
  .sidebar-section { border-top: 1px solid var(--color-rule); margin: 24px 12px 0; padding-top: 24px; }
  .sidebar-label { font-size: 10px; color: var(--color-muted); margin-bottom: 8px; }
  .topic-link { display: flex; gap: 10px; align-items: center; font-size: 11px; width: 100%; min-height: 40px; color: var(--color-neutral); text-align: left; padding: 8px 2px; border-radius: 4px; }
  .topic-dot { width: 6px; height: 6px; border-radius: 2px; }
  .dot-green { background: var(--color-green); }
  .dot-orange { background: var(--color-accent); }
  .dot-blue { background: var(--color-blue); }
  .dot-purple { background: var(--color-purple); }
  .topic-link > [data-icon] { margin-left: auto; }
  .topic-link svg { width: 12px; height: 12px; color: var(--color-muted); }
  .sidebar-bottom { margin-top: auto; padding-top: 32px; }
  .internal-note { padding: 16px 10px 24px; display: flex; gap: 8px; align-items: flex-start; }
  .internal-note > [data-icon] { color: var(--color-muted); margin-top: 2px; }
  .internal-note svg { width: 13px; height: 13px; }
  .internal-note strong { font-size: 10px; font-weight: 500; color: var(--color-neutral); }
  .internal-note p { font-size: 9px; color: var(--color-muted); margin-top: 4px; }
  .user-row { display: flex; gap: 10px; align-items: center; min-height: 76px; border-top: 1px solid var(--color-rule); padding: 12px 8px; }
  .avatar { background: var(--color-cover-pine); color: var(--color-cover-sage); border-radius: 50%; width: 30px; height: 30px; display: grid; place-items: center; font-size: 12px; }
  .user-row strong { display: block; font-size: 11px; font-weight: 550; }
  .user-row div > span { display: block; color: var(--color-muted); font-size: 9px; margin-top: 2px; }
  .user-more { font-size: 8px; color: var(--color-muted); margin-left: auto; }
  .mobile-nav, .mobile-brand { display: none; }
  .desktop-label { display: inline; color: var(--color-muted); }
  .topbar { min-height: 76px; padding-inline: 40px; }
  main { padding: 36px 40px 32px; }
  .page-heading { margin-bottom: 28px; }
  .ai-banner { padding: 24px; gap: 18px; }
  .edition { display: none; }
  .import-layout { grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 48px; }
  .detail-body { grid-template-columns: minmax(0,1.08fr) minmax(0,1fr); }
  .detail-preview { padding: 32px; }
  .detail-info { padding: 28px 32px; }
  .detail-preview img { margin-top: 12px; }
  .toast { bottom: 28px; }
  .ai-workspace { padding-top: 36px; }
}
@media (min-width: 78rem) {
  .case-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .ai-banner { display: grid; grid-template-columns: minmax(0,.85fr) minmax(0,1.15fr); align-items: center; gap: 4px 24px; }
  .ai-banner-copy { grid-row: 1 / 3; }
  .banner-footnote { grid-column: 2; font-size: 9px; margin-top: 2px; }
  .ai-banner h2 { font-size: 18px; }
  .quick-ai input { font-size: 11px; }
  .case-grid:not(.is-list) .cover-trae .cover-big { font-size: 78px; }
}
@media (min-width: 100rem) {
  .app-shell { grid-template-columns: 236px minmax(0,1fr); }
  main { padding-inline: 48px; }
  .topbar { padding-inline: 48px; }
  .ai-banner { padding: 28px; }
  .case-grid:not(.is-list) .cover-trae .cover-big { font-size: 94px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .cover-link:hover .cover-image, button:active, .button:active { transform: none; }
}