:root {
  --page: #fbfbfa;
  --surface: #fff;
  --surface-soft: #f5f7fb;
  --ink: #18181b;
  --muted: #6f727a;
  --quiet: #6d727d;
  --line: #e6e7eb;
  --line-strong: #cfd2da;
  --accent: #168143;
  --accent-soft: #ebf8ef;
  --mint: #dff5e8;
  --coral: #ffe6df;
  --dark: #202127;
  --radius: 8px;
  --content-width: 1816px;
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
}
html.dark-mode { --page: #15161a; --surface: #202126; --surface-soft: #292b31; --ink: #f4f4f5; --muted: #b5b7bf; --quiet: #aeb3bf; --line: #353740; --line-strong: #50535e; --accent: #61d98b; --accent-soft: #203b2a; --mint: #254333; --coral: #4b302b; --dark: #f4f4f5; }
* { box-sizing: border-box; }
html { max-width: 100%; overflow-x: clip; scroll-behavior: smooth; }
body { max-width: 100%; margin: 0; overflow-x: clip; background: var(--page); color: var(--ink); }
a { color: inherit; }
button, input, select { font: inherit; }
button { cursor: pointer; }
img { max-width: 100%; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.skip-link { position: fixed; top: 10px; left: 12px; z-index: 50; padding: 8px 11px; background: var(--dark); color: var(--page); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.vocab-topbar { position: sticky; top: 0; z-index: 20; display: grid; grid-template-columns: minmax(260px, 1fr) auto minmax(260px, 1fr); align-items: center; gap: 22px; min-height: 72px; padding: 12px max(24px, calc((100vw - var(--content-width)) / 2)); border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--page) 96%, transparent); backdrop-filter: blur(15px); }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); font-size: 16px; font-weight: 900; letter-spacing: .7px; text-decoration: none; white-space: nowrap; }
.brand small { color: var(--muted); font-size: 9px; font-weight: 700; letter-spacing: .9px; }
.brand-mark { position: relative; display: grid; width: 33px; height: 33px; place-items: center; border-radius: 8px; background: var(--accent); }
.brand-mark::before { width: 17px; height: 12px; border: 3px solid #fff; content: ""; }
.brand-mark i { position: absolute; width: 15px; height: 5px; background: #b8f36b; transform: skewX(-35deg); }
.topnav { display: flex; align-items: center; justify-content: center; gap: 28px; }
.topnav a { color: var(--muted); font-size: 13px; text-decoration: none; }
.topnav a:hover, .topnav a:focus-visible, .topnav a.is-active { color: var(--ink); }
.topnav a.is-active { font-weight: 800; text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 7px; }
.vocab-topbar .topnav > a:nth-of-type(n + 3):nth-of-type(-n + 7) { display: none; }
.vocab-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(390px, .86fr); gap: clamp(35px, 7vw, 110px); align-items: center; width: min(1340px, calc(100% - 48px)); margin: 0 auto; padding: 76px 0 64px; border-bottom: 1px solid var(--line); }
.eyebrow { margin: 0; color: var(--accent); font-size: 10px; font-weight: 850; letter-spacing: 1.3px; }
.hero-copy h1 { margin: 14px 0 0; font-size: clamp(46px, 6vw, 78px); line-height: 1; letter-spacing: 0; }
.hero-intro { max-width: 660px; margin: 20px 0 0; color: var(--muted); font-size: 17px; line-height: 1.75; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 26px; color: var(--muted); font-size: 12px; }
.hero-meta span::before { display: inline-block; width: 6px; height: 6px; margin-right: 7px; border-radius: 50%; background: var(--accent); content: ""; vertical-align: 1px; }
.hero-meta strong { color: var(--ink); font-size: 16px; }
.hero-diagram { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: 9px; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.diagram-step { display: grid; gap: 7px; min-height: 132px; align-content: center; padding: 16px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface-soft); }
.diagram-step span { color: var(--quiet); font: 700 10px/1 ui-monospace, monospace; }
.diagram-step strong { font-size: 15px; }
.diagram-step small { color: var(--muted); font-size: 11px; line-height: 1.4; }
.diagram-step.is-accent { border-color: var(--accent); background: var(--accent); color: #fff; }
.diagram-step.is-accent span, .diagram-step.is-accent small { color: #d9f7e4; }
.diagram-arrow { color: var(--accent); font-size: 22px; }
.vocab-toolbar { width: min(var(--content-width), calc(100% - 48px)); margin: 0 auto; padding: 22px 0 34px; }
.search-field { display: flex; align-items: center; gap: 12px; min-height: 54px; padding: 0 16px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
.search-field:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent); }
.search-icon { flex: 0 0 auto; width: 15px; height: 15px; border: 2px solid var(--quiet); border-radius: 50%; }
.search-icon::after { display: block; width: 7px; height: 2px; margin: 12px 0 0 10px; background: var(--quiet); content: ""; transform: rotate(45deg); }
.search-field input { min-width: 0; flex: 1; border: 0; outline: 0; background: transparent; color: var(--ink); font-size: 15px; }
.search-field input::placeholder { color: var(--quiet); }
kbd { padding: 4px 7px; border: 1px solid var(--line); border-radius: 5px; color: var(--quiet); font-size: 10px; }
.category-chips { display: flex; gap: 8px; overflow-x: auto; margin-top: 16px; padding-bottom: 3px; scrollbar-width: none; }
.category-chips::-webkit-scrollbar { display: none; }
.category-chip, .taxonomy-link { display: flex; align-items: center; justify-content: space-between; gap: 12px; border: 1px solid var(--line); background: var(--surface); color: var(--muted); transition: border-color .18s ease, background .18s ease, color .18s ease; }
.category-chip { flex: 0 0 auto; min-height: 36px; padding: 0 12px; border-radius: 7px; font-size: 12px; white-space: nowrap; }
.category-chip b, .taxonomy-link b { color: var(--quiet); font-size: 10px; font-weight: 700; }
.category-chip:hover, .category-chip.is-selected, .taxonomy-link:hover, .taxonomy-link.is-selected { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
.category-chip.is-selected b, .taxonomy-link.is-selected b { color: var(--accent); }
.vocab-layout { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: clamp(48px, 5vw, 88px); width: min(var(--content-width), calc(100% - 48px)); margin: 0 auto; padding: 12px 0 90px; }
.taxonomy { position: sticky; top: 90px; align-self: start; }
.taxonomy-heading { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 14px; color: var(--ink); font-size: 13px; font-weight: 800; }
.taxonomy-heading span:last-child { color: var(--quiet); font-size: 11px; font-weight: 600; }
.taxonomy nav { display: grid; gap: 5px; }
.taxonomy-link { width: 100%; min-height: 50px; padding: 0 14px; border-radius: 7px; font-size: 13px; text-align: left; }
.taxonomy-note { margin-top: 28px; padding: 15px 14px; border-left: 3px solid var(--accent); background: var(--accent-soft); }
.taxonomy-note strong { font-size: 12px; }
.taxonomy-note p { margin: 7px 0 12px; color: var(--muted); font-size: 11px; line-height: 1.55; }
.taxonomy-note a { color: var(--accent); font-size: 11px; font-weight: 800; text-decoration: none; }
.results-column { min-width: 0; }
.results-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; }
.results-heading h2 { margin: 7px 0 0; font-size: 32px; line-height: 1.1; }
.sort-control { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); font-size: 11px; white-space: nowrap; }
.sort-control select { min-height: 34px; padding: 0 9px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); color: var(--ink); font-size: 12px; }
.results-summary { margin: 10px 0 24px; color: var(--muted); font-size: 13px; }
.entry-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.entry-card { position: relative; display: grid; min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease; }
.entry-card:hover { border-color: var(--line-strong); box-shadow: 0 14px 30px rgba(33, 35, 45, .08); transform: translateY(-3px); }
.entry-card-hitarea { position: absolute; z-index: 1; inset: 0; width: 100%; border: 0; background: transparent; }
.entry-visual { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--surface-soft); }
.entry-visual::after { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 54%, rgba(15,16,22,.35)); content: ""; pointer-events: none; }
.entry-visual img { display: block; width: 100%; height: 100%; object-fit: cover; }
.visual-label { position: absolute; z-index: 2; right: 10px; bottom: 9px; left: 10px; display: flex; align-items: center; justify-content: space-between; gap: 8px; color: #fff; font: 700 9px/1 ui-monospace, monospace; letter-spacing: .5px; text-transform: uppercase; }
.visual-label span:last-child { color: #d9f7e4; }
.entry-card-body { position: relative; z-index: 2; display: grid; gap: 9px; min-width: 0; padding: 16px 18px 15px; pointer-events: none; }
.entry-card-meta { display: flex; align-items: center; justify-content: space-between; gap: 8px; color: var(--muted); font-size: 10px; }
.favorite-button { position: relative; z-index: 3; display: grid; width: 44px; height: 44px; flex: 0 0 44px; place-items: center; margin: -6px 0 -6px 0; border: 0; background: transparent; color: var(--quiet); font-size: 20px; line-height: 1; pointer-events: auto; }
.favorite-button:hover, .favorite-button.is-favorite { color: var(--accent); }
.entry-card h3 { margin: 0; font-size: 19px; line-height: 1.2; }
.entry-card h3 em { color: var(--accent); font-size: 12px; font-style: normal; font-weight: 600; }
.entry-ask { display: -webkit-box; overflow: hidden; min-height: 38px; margin: 0; color: var(--ink); font-size: 12px; line-height: 1.55; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.entry-definition { display: -webkit-box; overflow: hidden; min-height: 39px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.55; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.entry-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.entry-tags span, .detail-tags span { padding: 5px 7px; border-radius: 4px; background: var(--surface-soft); color: var(--muted); font-size: 10px; line-height: 1; }
.entry-card-footer { margin-top: 3px; padding-top: 10px; border-top: 1px solid var(--line); }
.entry-open-button { position: relative; z-index: 3; display: flex; width: 100%; min-height: 38px; align-items: center; justify-content: space-between; gap: 8px; padding: 0 10px; border: 1px solid var(--line-strong); border-radius: 6px; background: var(--surface); color: var(--accent); font-size: 11px; font-weight: 800; pointer-events: auto; }
.entry-open-button:hover, .entry-open-button:focus-visible { border-color: var(--accent); background: var(--accent-soft); }
.empty-state { display: grid; justify-items: start; max-width: 460px; padding: 54px 0; }
.empty-mark { display: grid; width: 38px; height: 38px; place-items: center; border: 1px solid var(--line-strong); border-radius: 50%; color: var(--accent); }
.empty-state h3 { margin: 15px 0 0; font-size: 22px; }
.empty-state p { margin: 8px 0 18px; color: var(--muted); font-size: 14px; }
.secondary-button { min-height: 36px; padding: 0 13px; border: 1px solid var(--line-strong); border-radius: 6px; background: var(--surface); color: var(--ink); font-size: 12px; }
.secondary-button:hover { border-color: var(--accent); color: var(--accent); }
.vocab-footer { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 24px max(24px, calc((100vw - var(--content-width)) / 2)); border-top: 1px solid var(--line); background: var(--dark); color: var(--page); }
.vocab-footer p { margin: 0; font-size: 13px; line-height: 1.5; }
.vocab-footer a { color: #9ee8b8; font-size: 12px; font-weight: 800; text-decoration: none; white-space: nowrap; }
.term-dialog { width: min(980px, calc(100% - 28px)); max-height: min(900px, calc(100dvh - 28px)); padding: 0; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); color: var(--ink); box-shadow: 0 28px 90px rgba(10, 12, 20, .24); }
.term-dialog::backdrop { background: rgba(13, 15, 22, .5); backdrop-filter: blur(3px); }
.term-dialog-shell { position: relative; }
.dialog-close-form { position: absolute; z-index: 4; top: 13px; right: 13px; margin: 0; }
.icon-button { display: grid; width: 44px; height: 44px; place-items: center; border: 1px solid var(--line); border-radius: 50%; background: color-mix(in srgb, var(--surface) 92%, transparent); color: var(--ink); font-size: 24px; line-height: 1; }
.icon-button:hover, .icon-button:focus-visible { border-color: var(--accent); background: var(--accent); color: #fff; }
.term-dialog-content { max-height: min(900px, calc(100dvh - 28px)); overflow: auto; padding: 40px clamp(22px, 5vw, 62px) 48px; }
.term-detail { min-width: 0; max-width: 850px; margin: 0 auto; }
.detail-topline { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 15px; padding-right: 54px; color: var(--muted); font-size: 11px; }
.favorite-detail-button { min-height: 34px; padding: 0 10px; border: 1px solid var(--line-strong); border-radius: 17px; background: var(--surface); color: var(--muted); font-size: 11px; }
.favorite-detail-button[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); }
.term-detail h2 { margin: 15px 0 0; font-size: clamp(30px, 5vw, 48px); line-height: 1.05; }
.term-detail h2 em { color: var(--accent); font-size: .42em; font-style: normal; font-weight: 650; }
.detail-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 15px; }
.detail-ask { margin: 23px 0 0; padding: 15px 18px; border-left: 3px solid var(--accent); background: var(--accent-soft); color: var(--ink); font-size: 15px; line-height: 1.6; }
.detail-definition { margin: 20px 0 0; color: var(--muted); font-size: 15px; line-height: 1.75; }
.detail-definition strong { color: var(--ink); }
.detail-figure { margin: 30px 0 0; }
.detail-figure img { display: block; width: 100%; max-height: 430px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface-soft); object-fit: cover; }
.detail-figure figcaption { margin-top: 9px; color: var(--muted); font-size: 11px; line-height: 1.5; }
.detail-columns { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; margin-top: 30px; }
.detail-columns > section { min-width: 0; }
.term-detail h3 { margin: 0 0 12px; font-size: 17px; }
.term-detail h4 { margin: 16px 0 7px; color: var(--muted); font-size: 11px; letter-spacing: .4px; }
.detail-table-wrap { max-width: 100%; overflow-x: auto; }
.detail-table-wrap table { width: 100%; min-width: 0; table-layout: fixed; border-collapse: collapse; font-size: 12px; }
.detail-table-wrap th, .detail-table-wrap td { overflow-wrap: anywhere; padding: 9px 10px; border: 1px solid var(--line); text-align: left; vertical-align: top; line-height: 1.5; }
.detail-table-wrap th { background: var(--surface-soft); font-size: 11px; }
.detail-table-wrap td { color: var(--muted); }
.detail-list { display: grid; gap: 7px; margin: 0; padding-left: 18px; color: var(--muted); font-size: 12px; line-height: 1.55; }
.compact-list { display: grid; gap: 7px; margin: 0; padding-left: 18px; color: var(--muted); font-size: 12px; line-height: 1.55; }
.split-panel { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 30px; padding: 18px; border: 1px solid var(--line); background: var(--surface-soft); }
.split-panel h3 { color: var(--accent); font: 700 11px/1 ui-monospace, monospace; letter-spacing: .6px; text-transform: uppercase; }
.prompt-panel { margin-top: 30px; padding: 18px; border: 1px solid var(--line); background: #1f2430; color: #eff1ff; }
.prompt-heading { display: flex; align-items: center; justify-content: space-between; gap: 15px; }
.prompt-heading h3 { margin: 0; color: #fff; font-size: 15px; }
.copy-prompt-button { min-height: 32px; padding: 0 9px; border: 1px solid #687197; border-radius: 5px; background: transparent; color: #dce2ff; font-size: 11px; }
.copy-prompt-button:hover { border-color: #fff; color: #fff; }
.prompt-panel pre { margin: 16px 0 0; overflow: auto; white-space: pre-wrap; }
.prompt-panel code { color: #dbe1ff; font: 12px/1.7 ui-monospace, SFMono-Regular, Menlo, monospace; }
.confusion-panel { margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--line); }
.confusion-panel p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.related-terms { margin-top: 12px !important; }
.related-terms button { padding: 0; border: 0; background: transparent; color: var(--accent); font-size: 13px; text-decoration: underline; text-underline-offset: 3px; }
.detail-footer { display: flex; align-items: center; justify-content: space-between; gap: 15px; margin-top: 30px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--quiet); font-size: 11px; }
.detail-footer a { color: var(--accent); font-weight: 750; text-decoration: none; }
.toast { position: fixed; z-index: 60; right: 20px; bottom: 20px; padding: 11px 14px; border: 1px solid var(--line-strong); border-radius: 7px; background: var(--dark); color: var(--page); font-size: 12px; box-shadow: 0 10px 30px rgba(15,16,22,.18); }
[hidden] { display: none !important; }
@media (max-width: 1320px) { .vocab-topbar { grid-template-columns: auto 1fr; }.entry-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }.vocab-layout { grid-template-columns: 240px minmax(0, 1fr); }.vocab-hero { grid-template-columns: 1fr; }.hero-diagram { max-width: 680px; } }
@media (max-width: 780px) { .vocab-topbar { display: flex; gap: 10px; min-height: 64px; padding: 10px 16px; }.brand { flex: 0 0 auto; font-size: 13px; }.brand small { display: none; }.topnav { min-width: 0; max-width: none; flex: 1 1 auto; justify-content: flex-start; gap: 13px; overflow-x: auto; scrollbar-width: none; }.topnav::-webkit-scrollbar { display: none; }.topnav a { flex: 0 0 auto; min-height: 44px; display: inline-flex; align-items: center; font-size: 11px; }.vocab-hero, .vocab-toolbar, .vocab-layout { width: min(100% - 36px, var(--content-width)); }.vocab-hero { gap: 28px; padding: 48px 0 40px; }.hero-copy h1 { font-size: 46px; }.hero-intro { font-size: 15px; }.hero-diagram { grid-template-columns: 1fr; gap: 6px; padding: 12px; }.diagram-step { min-height: 78px; }.diagram-arrow { display: none; }.category-chip, .taxonomy-link, .sort-control select, .secondary-button, .favorite-detail-button, .copy-prompt-button { min-height: 44px; }.vocab-layout { display: block; padding-top: 0; }.taxonomy { position: static; overflow-x: clip; margin-bottom: 25px; }.taxonomy nav { display: flex; overflow-x: auto; margin: 0 -18px; padding: 0 18px 5px; scrollbar-width: none; }.taxonomy nav::-webkit-scrollbar { display: none; }.taxonomy-link { flex: 0 0 auto; width: auto; min-width: max-content; }.taxonomy-note { display: none; }.results-heading { align-items: start; flex-direction: column; gap: 14px; }.results-heading h2 { font-size: 28px; }.sort-control { width: 100%; justify-content: space-between; }.sort-control select { flex: 1; max-width: 200px; }.entry-grid { grid-template-columns: 1fr; gap: 14px; }.entry-card h3 { font-size: 19px; }.related-terms button { min-height: 44px; padding: 8px 2px; }.vocab-footer { display: block; padding: 21px 18px; }.vocab-footer p { max-width: 500px; }.vocab-footer a { display: inline-block; margin-top: 12px; }.term-dialog { width: calc(100% - 16px); max-height: calc(100dvh - 16px); }.term-dialog-content { padding: 35px 18px 34px; }.detail-columns, .split-panel { grid-template-columns: 1fr; gap: 24px; }.detail-footer { align-items: start; flex-direction: column; }.detail-figure img { max-height: 280px; } }
@media (max-width: 480px) { .vocab-topbar { padding-inline: 12px; }.brand > span:not(.brand-mark) { display: none; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; }.entry-card { transition: none; } }