/* ============ NEUROSCORE // tokens ============ */
:root {
  --bg: #05070a;
  --bg-panel: #0a0e15;
  --bg-elev: #0e141d;
  --line: #1c2531;
  --line-soft: #141b25;
  --ink: #e6edf5;
  --ink-dim: #93a1b3;
  --ink-faint: #5b6878;
  --cyan: #2fe0ff;
  --cyan-soft: rgba(47, 224, 255, 0.12);
  --cyan-line: rgba(47, 224, 255, 0.35);
  --magenta: #ff2d78;
  --magenta-soft: rgba(255, 45, 120, 0.12);
  --gold: #ffc247;
  --silver: #cfd9e6;
  --bronze: #e09a62;
  --lime: #a3ff2e;
  --down: #ff5c5c;
  --font-display: "Chakra Petch", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "IBM Plex Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "Consolas", monospace;
  --notch: 14px;
  --header-h: 56px;
}

/* ============ reset ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: var(--cyan); color: #02141a; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, select { font: inherit; color: inherit; }
a { color: inherit; }
ul { list-style: none; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  clip: rect(0 0 0 0); clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; border-radius: 2px; }

/* ============ atmosphere ============ */
.scanlines {
  position: fixed; inset: 0; z-index: 2000; pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(255,255,255,0.022) 0 1px, transparent 1px 3px);
  mix-blend-mode: overlay;
}
.bg-glow {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(900px 420px at 50% -80px, rgba(47,224,255,0.10), transparent 70%),
    radial-gradient(600px 300px at 85% 40%, rgba(255,45,120,0.05), transparent 70%);
}

/* ============ topbar ============ */
.topbar {
  position: sticky; top: 0; z-index: 1000;
  height: var(--header-h);
  background: rgba(5, 7, 10, 0.88);
  backdrop-filter: blur( 10px);
  border-bottom: 1px solid var(--line);
}
.topbar__inner {
  max-width: 1440px; height: 100%; margin: 0 auto; padding: 0 28px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { display: flex; align-items: baseline; gap: 10px; text-decoration: none; }
.brand__mark { width: 18px; height: 18px; color: var(--cyan); align-self: center; }
.brand__name {
  font-family: var(--font-display); font-weight: 700; font-size: 18px;
  letter-spacing: 0.14em; color: var(--ink);
}
.brand__sub { font-size: 12px; color: var(--ink-faint); letter-spacing: 0.08em; }
.topbar__meta { display: flex; align-items: center; gap: 16px; }
.live {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em; color: var(--lime);
}
.live__dot {
  width: 7px; height: 7px; background: var(--lime); border-radius: 50%;
  box-shadow: 0 0 8px var(--lime); animation: pulse 2s ease-in-out infinite;
}
.clock { font-family: var(--font-mono); font-size: 13px; color: var(--ink-dim); font-variant-numeric: tabular-nums; }
@keyframes pulse { 50% { opacity: 0.35; } }

/* ============ ticker ============ */
.ticker {
  border-bottom: 1px solid var(--line);
  background: var(--bg-panel);
  overflow: hidden;
}
.ticker__track {
  display: flex; width: max-content; gap: 42px; padding: 9px 24px;
  animation: ticker-scroll 46s linear infinite;
}
.ticker:hover .ticker__track { animation-play-state: paused; }
.ticker__item {
  display: inline-flex; align-items: baseline; gap: 8px;
  font-family: var(--font-mono); font-size: 12px; white-space: nowrap;
}
.ticker__name { color: var(--ink-dim); letter-spacing: 0.04em; }
.ticker__score { color: var(--cyan); }
.ticker__delta--up { color: var(--lime); }
.ticker__delta--down { color: var(--down); }
.ticker__delta--flat { color: var(--ink-faint); }
@keyframes ticker-scroll { to { transform: translateX(-50%); } }

/* ============ hero ============ */
.hero {
  max-width: 1440px; margin: 0 auto; padding: 72px 28px 56px;
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center;
}
.eyebrow {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.22em;
  color: var(--cyan); margin-bottom: 22px;
}
.hero__title {
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(40px, 5.4vw, 64px); line-height: 1.08; letter-spacing: 0.01em;
}
.hero__accent {
  color: var(--cyan);
  text-shadow: 0 0 24px rgba(47,224,255,0.45);
}
.hero__desc { margin: 24px 0 18px; max-width: 52ch; color: var(--ink-dim); }
.hero__meta { font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-faint); margin-bottom: 32px; }
.hero__meta b { color: var(--ink-dim); font-weight: 500; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-display); font-weight: 600; font-size: 15px; letter-spacing: 0.06em;
  padding: 12px 26px; text-decoration: none;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: background-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}
.btn--primary { background: var(--cyan); color: #04141b; }
.btn--primary:hover { background: #6beeff; box-shadow: 0 0 24px rgba(47,224,255,0.4); }

/* ---- terminal ---- */
.terminal {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}
.terminal__bar {
  display: flex; align-items: center; gap: 7px;
  padding: 11px 18px; border-bottom: 1px solid var(--line-soft);
}
.terminal__dot { width: 9px; height: 9px; border-radius: 50%; background: var(--line); }
.terminal__dot:first-child { background: rgba(255,45,120,0.55); }
.terminal__dot:nth-child(2) { background: rgba(255,194,71,0.55); }
.terminal__dot:nth-child(3) { background: rgba(163,255,46,0.55); }
.terminal__title { margin-left: 8px; font-family: var(--font-mono); font-size: 12px; color: var(--ink-faint); }
.terminal__body {
  padding: 18px 20px 22px;
  font-family: var(--font-mono); font-size: 12.5px; line-height: 2;
  min-height: 232px;
}
.terminal__line { white-space: pre-wrap; word-break: break-all; }
.terminal__line--cmd { color: var(--ink-dim); }
.terminal__line--ok { color: var(--lime); }
.terminal__line--info { color: var(--cyan); }
.terminal__line--warn { color: var(--gold); }
.terminal__caret {
  display: inline-block; width: 8px; height: 14px; margin-left: 6px;
  background: var(--cyan); vertical-align: -2px; animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ============ board ============ */
.board { max-width: 1440px; margin: 0 auto; padding: 24px 28px 80px; scroll-margin-top: 72px; }
.board__head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  padding-bottom: 20px; border-bottom: 1px solid var(--line); margin-bottom: 24px;
}
.section-title {
  font-family: var(--font-display); font-weight: 700; font-size: 28px; letter-spacing: 0.04em;
}
.section-title__en { font-size: 14px; font-weight: 500; color: var(--ink-faint); letter-spacing: 0.18em; }
.board__count { font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-dim); }

/* ---- controls ---- */
.controls { display: flex; gap: 12px; margin-bottom: 16px; }
.search {
  flex: 1; display: flex; align-items: center; gap: 10px;
  background: var(--bg-panel); border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  padding: 0 16px; transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.search:focus-within { border-color: var(--cyan-line); box-shadow: 0 0 0 1px var(--cyan-line), 0 0 20px rgba(47,224,255,0.12); }
.search__prompt { font-family: var(--font-mono); color: var(--cyan); font-weight: 700; }
.search input {
  flex: 1; background: none; border: none; outline: none;
  padding: 12px 0; font-size: 14px;
}
.search input::placeholder { color: var(--ink-faint); }

.select { position: relative; }
.select select {
  appearance: none; -webkit-appearance: none;
  background: var(--bg-panel); border: 1px solid var(--line); color: var(--ink-dim);
  font-family: var(--font-mono); font-size: 13px;
  padding: 12px 40px 12px 16px; cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: border-color 0.15s ease, color 0.15s ease;
}
.select select:hover, .select select:focus { border-color: var(--cyan-line); color: var(--ink); outline: none; }
.select select option { background: var(--bg-elev); color: var(--ink); }
.select__arrow {
  position: absolute; right: 15px; top: 50%; transform: translateY(-50%);
  pointer-events: none; color: var(--cyan); font-size: 12px;
}
.btn-dir {
  border: 1px solid var(--line); background: var(--bg-panel); color: var(--ink-dim);
  width: 46px; font-size: 16px;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: border-color 0.15s ease, color 0.15s ease;
}
.btn-dir:hover { border-color: var(--cyan-line); color: var(--cyan); }

/* ---- chips ---- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.chip {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.04em;
  color: var(--ink-dim); border: 1px solid var(--line); background: var(--bg-panel);
  padding: 6px 14px;
  clip-path: polygon(0 0, calc(100% - 7px) 0, 100% 7px, 100% 100%, 7px 100%, 0 calc(100% - 7px));
  transition: all 0.15s ease;
}
.chip:hover { border-color: var(--cyan-line); color: var(--ink); }
.chip.is-active {
  color: var(--cyan); border-color: var(--cyan-line); background: var(--cyan-soft);
  text-shadow: 0 0 12px rgba(47,224,255,0.5);
}

/* ---- compare band（全宽，位于卡片上方） ---- */
.compare {
  background: var(--bg-panel); border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
  padding: 20px 24px;
  margin-bottom: 26px;
}
.compare__head {
  display: flex; align-items: baseline; justify-content: space-between;
  flex-wrap: wrap; gap: 8px 16px; margin-bottom: 16px;
}
.compare__title { font-family: var(--font-display); font-weight: 700; font-size: 19px; letter-spacing: 0.03em; }
.compare__en { font-size: 12px; font-weight: 500; color: var(--ink-faint); letter-spacing: 0.18em; }
.compare__head-right { display: flex; align-items: center; gap: 16px; }
.compare__hint { font-size: 12.5px; color: var(--ink-faint); }
.compare__chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.compare__chip {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-mono); font-size: 12px; color: var(--ink);
  border: 1px solid var(--line); background: var(--bg-elev); padding: 5px 8px 5px 10px;
}
.compare__chip-dot { width: 8px; height: 8px; flex: none; }
.compare__chip-x { color: var(--ink-faint); padding: 0 2px; line-height: 1; }
.compare__chip-x:hover { color: var(--magenta); }

.compare__grid {
  display: grid; grid-template-columns: 320px minmax(0, 1fr); gap: 32px; align-items: start;
}
.radar-wrap { display: flex; justify-content: center; padding: 4px 0 12px; }
.radar-wrap svg { width: 100%; max-width: 300px; height: auto; }
.radar-poly { animation: radar-pop 0.4s ease both; transform-box: fill-box; transform-origin: center; }
@keyframes radar-pop { from { transform: scale(0.6); opacity: 0; } }
.radar-legend { display: flex; flex-direction: column; gap: 6px; }
.radar-legend li {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-dim);
}
.radar-legend b { color: var(--ink); font-weight: 500; }
.radar-legend .dot { width: 9px; height: 9px; flex: none; }
.radar-legend .score { margin-left: auto; color: var(--cyan); }
.compare__empty {
  border: 1px dashed var(--line); padding: 16px 18px; text-align: center;
  font-size: 13px; color: var(--ink-faint);
}
.compare__right { min-width: 0; }
.compare-table-wrap { overflow-x: auto; border-top: 1px solid var(--line-soft); }
table.compare-table {
  width: 100%; border-collapse: collapse;
  font-family: var(--font-mono); font-size: 12.5px; font-variant-numeric: tabular-nums;
}
.compare-table th, .compare-table td {
  padding: 8px 14px; text-align: right; white-space: nowrap;
  border-bottom: 1px solid var(--line-soft);
}
.compare-table th:first-child, .compare-table td:first-child { text-align: left; color: var(--ink-faint); font-weight: 400; }
.compare-table thead th { color: var(--ink); font-weight: 500; border-bottom: 1px solid var(--line); }
.compare-table td { color: var(--ink-dim); }
.compare-table td.is-best { color: var(--gold); text-shadow: 0 0 10px rgba(255,194,71,0.35); }
.compare-table .col-dot { display: inline-block; width: 7px; height: 7px; margin-right: 6px; vertical-align: 1px; }
.btn-clear {
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-dim);
  border: 1px solid var(--line); padding: 6px 14px;
  clip-path: polygon(0 0, calc(100% - 7px) 0, 100% 7px, 100% 100%, 7px 100%, 0 calc(100% - 7px));
  transition: all 0.15s ease;
}
.btn-clear:hover { color: var(--magenta); border-color: rgba(255,45,120,0.4); }

/* ---- cards ---- */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(292px, 1fr)); gap: 18px; }
.card {
  background: var(--bg-panel); border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--notch)) 0, 100% var(--notch), 100% 100%, var(--notch) 100%, 0 calc(100% - var(--notch)));
  padding: 20px 20px 16px;
  display: flex; flex-direction: column; gap: 14px;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--cyan-line);
  box-shadow: 0 8px 32px rgba(0,0,0,0.45), 0 0 0 1px rgba(47,224,255,0.08);
}
.card__head { display: flex; align-items: flex-start; gap: 12px; }
.rank {
  font-family: var(--font-mono); font-weight: 700; font-size: 15px;
  padding: 3px 8px; border: 1px solid var(--line); color: var(--ink-faint);
  clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 6px 100%, 0 calc(100% - 6px));
}
.rank--1 { color: var(--gold); border-color: rgba(255,194,71,0.4); text-shadow: 0 0 12px rgba(255,194,71,0.4); }
.rank--2 { color: var(--silver); border-color: rgba(207,217,230,0.35); }
.rank--3 { color: var(--bronze); border-color: rgba(224,154,98,0.35); }
.card__title { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.card__title h3 {
  font-family: var(--font-display); font-weight: 700; font-size: 19px; letter-spacing: 0.02em;
  line-height: 1.25;
}
.card__vendor { font-family: var(--font-mono); font-size: 11.5px; color: var(--ink-faint); letter-spacing: 0.08em; }
.card__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.card__tags span {
  font-size: 11px; font-family: var(--font-mono); color: var(--ink-dim);
  border: 1px solid var(--line-soft); padding: 2px 8px; background: var(--bg-elev);
}
.card__score-top {
  display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 7px;
}
.card__score-label { font-family: var(--font-mono); font-size: 11px; color: var(--ink-faint); letter-spacing: 0.12em; }
.card__score-val {
  font-family: var(--font-mono); font-weight: 700; font-size: 24px; color: var(--cyan);
  font-variant-numeric: tabular-nums; text-shadow: 0 0 16px rgba(47,224,255,0.35);
}
.bar { height: 5px; background: var(--line-soft); overflow: hidden; }
.bar__fill {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  box-shadow: 0 0 10px rgba(47,224,255,0.35);
}
.card__metrics {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
  border-top: 1px solid var(--line-soft); padding-top: 13px;
}
.card__metrics div { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.card__metrics dt { font-family: var(--font-mono); font-size: 10.5px; color: var(--ink-faint); letter-spacing: 0.06em; }
.card__metrics dd { font-family: var(--font-mono); font-size: 15px; color: var(--ink); font-variant-numeric: tabular-nums; }
.card__foot {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  border-top: 1px solid var(--line-soft); padding-top: 13px; margin-top: auto;
}
.card__foot-meta { font-family: var(--font-mono); font-size: 11px; color: var(--ink-faint); }
.btn-compare {
  font-family: var(--font-display); font-weight: 600; font-size: 13px; letter-spacing: 0.05em;
  color: var(--cyan); border: 1px solid var(--cyan-line); background: var(--cyan-soft);
  padding: 7px 14px; white-space: nowrap;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
  transition: all 0.15s ease;
}
.btn-compare:hover { background: rgba(47,224,255,0.22); }
.btn-compare[aria-pressed="true"] { color: #160212; background: var(--magenta); border-color: var(--magenta); }
.btn-compare[aria-pressed="true"]:hover { background: #ff5693; }

/* ---- empty state ---- */
.empty {
  grid-column: 1 / -1; text-align: center; padding: 72px 20px;
  border: 1px dashed var(--line); color: var(--ink-dim);
}
.empty__title { font-family: var(--font-display); font-size: 20px; color: var(--ink); margin-bottom: 8px; }
.empty p { font-size: 14px; margin-bottom: 20px; }


/* ============ footer ============ */
.footer {
  border-top: 1px solid var(--line);
  padding: 28px;
  display: flex; flex-wrap: wrap; gap: 6px 24px; justify-content: space-between;
  max-width: 1440px; margin: 0 auto;
  font-size: 12.5px; color: var(--ink-faint);
}
.footer__dim { font-family: var(--font-mono); }
.footer__back {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
  padding-bottom: 1px;
}
.footer__back:hover { text-decoration: underline; }

/* ============ responsive ============ */
@media (max-width: 1120px) {
  .compare__grid { grid-template-columns: 280px minmax(0, 1fr); gap: 24px; }
}
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; gap: 40px; padding: 48px 24px 44px; }
  .board { padding: 16px 24px 64px; }
  .controls { flex-wrap: wrap; }
  .search { flex: 1 1 100%; }
  .brand__sub { display: none; }
  .compare { padding: 18px 18px; }
  .compare__grid { grid-template-columns: 1fr; gap: 18px; }
  .compare__head-right { width: 100%; justify-content: space-between; }
}
@media (max-width: 480px) {
  .topbar__inner { padding: 0 16px; }
  .cards { grid-template-columns: 1fr; }
  .card__metrics { grid-template-columns: repeat(3, 1fr); gap: 6px; }
  .footer { padding: 24px 16px; }
}

/* ============ reduced motion ============ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .ticker__track { animation: none; }
}

/* ============ 数据溯源版：状态徽章 / 来源链接 / 雷达注记 ============ */
.card__status {
  display: inline-block;
  font-size: 11px;
  color: var(--magenta);
  border: 1px solid rgba(255, 45, 120, 0.35);
  background: var(--magenta-soft);
  padding: 2px 8px;
  border-radius: 3px;
  margin-top: 8px;
  letter-spacing: 0.04em;
}
.rank--na { color: var(--ink-faint); }
.card__src {
  font-size: 12px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
  margin-right: 12px;
  white-space: nowrap;
}
.card__src:hover { text-decoration: underline; }
.radar-note { font-size: 11.5px; color: var(--ink-faint); margin: 6px 0 0; }
.radar-empty-note { font-size: 12px; color: var(--ink-faint); padding: 16px 0; }
.compare__metric-note { font-size: 11.5px; color: var(--ink-faint); margin: 0 0 8px; }