/* Hallmark · v2.0.0 · theme: custom · genre: atmospheric · job: try · shape: Workbench · hero: ledge · nav: edge wordmark + actions · footer: mast · surface: absolute · posture: neon-restrained · redesign-v2 dir-cyber · Lingxi AI Neon Grid · refined */
/* Hallmark · pre-emit critique: P5 H5 E5 S5 R5 V5 · weakest: R, cut scanline opacity and card glow radius so dual neon reads as accents not game HUD */
/* Hallmark · answered F24 · dropdown uses hairline + deep shadow as HUD panel edge, not soft float */
/* Hallmark · waive 7b · surface: absolute declared · dark OLED tool UI uses absolute white ink on near-black */
/* Hallmark · answered F3 · display heads are short Chinese product lines; balance applied */
/* Hallmark · answered F4 · hero second action is typographic link (.btn-text), not a filled button */
/* Hallmark · waive 39b · preview-bar chips are app chrome · 32px chips sit in a fixed preview strip; hero primary CTA is 44px */
/* Hallmark · waive 78 · workbench catalog density · section heads stay 28px so the tool grid leads under a short Chinese hero */
/* Hallmark · dismissed 77 · thin tool homepage anatomy · hero catalog pricing footer matches the product IA */
/* Hallmark · dismissed 42 · product IA keeps 工具箱 / 定价 / 文档 as three nav links beside search and auth */
:root {
  --bg: #000000;
  --bg-elev: #0A0A0A;
  --fg: #F2F2F2;
  --fg-muted: #A8A8A8;
  --fg-faint: #8A8A8A;
  --cyan: #00F0FF;
  --cyan-on: #001416;
  --magenta: #FF2BD6;
  --magenta-on: #1A0014;
  --accent: var(--cyan);
  --accent-on: var(--cyan-on);
  --border: #1A1A1A;
  --border-strong: #5C5C5C;
  --border-field: #5C5C5C;
  --border-neon: color-mix(in srgb, var(--cyan) 28%, #1A1A1A);
  --danger: #FF5C7A;
  --card: #080808;
  --glow-cyan: 0 0 10px color-mix(in srgb, var(--cyan) 28%, transparent);
  --glow-cyan-soft: 0 0 18px color-mix(in srgb, var(--cyan) 18%, transparent);
  --glow-magenta: 0 0 10px color-mix(in srgb, var(--magenta) 28%, transparent);
  --font: "Noto Sans SC", Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-display: Orbitron, "Noto Sans SC", Inter, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --radius: 0px;
  --chamfer: 10px;
  --chamfer-sm: 7px;
  --space: 8px;
  --max: 1120px;
  --ring: var(--cyan);
  --overlay: rgba(0, 0, 0, 0.82);
  --grid-line: color-mix(in srgb, var(--cyan) 5%, transparent);
  --mask-show: #FFFFFF;
  --shadow-deep: rgba(0, 0, 0, 0.6);
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --dur: 0.16s;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { overflow-x: clip; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  position: relative;
  min-height: 100vh;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; }
:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  background: var(--cyan); color: var(--cyan-on); padding: 8px 12px;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
}
.skip-link:focus, .skip-link:focus-visible {
  opacity: 1;
  pointer-events: auto;
}
.wrap { width: min(100% - 40px, var(--max)); margin-inline: auto; }
@media (max-width: 640px) { .wrap { width: min(100% - 24px, var(--max)); } }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ambient grid + scanline — decorative, reduced-motion safe */
.fx-grid {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 65% 50% at 50% 0%, var(--mask-show) 15%, transparent 72%);
  opacity: 0.85;
}
.fx-scan {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 3px,
    color-mix(in srgb, var(--fg) 2.5%, transparent) 3px,
    color-mix(in srgb, var(--fg) 2.5%, transparent) 4px
  );
  opacity: 0.28;
}
.topbar, main, .footer, .bottom-nav, .modal, .toast, .preview-bar {
  position: relative;
  z-index: 1;
}

/* ——— Topbar ——— */
.topbar {
  position: sticky; top: 0; z-index: 40;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.topbar::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -1px; height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--cyan) 18%, var(--magenta) 82%, transparent 100%);
  opacity: 0.45;
}
.topbar__inner {
  display: flex; align-items: center; gap: 16px;
  height: 60px;
}
.logo {
  display: flex; align-items: center; gap: 8px;
  font-weight: 600; letter-spacing: -0.02em;
  flex-shrink: 0;
  transition: opacity var(--dur) var(--ease);
}
.logo:hover { opacity: 0.88; }
.logo__mark {
  width: 16px; height: 16px;
  background: var(--cyan);
  box-shadow: var(--glow-cyan);
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}
.logo__text { color: var(--fg); }
.logo__lat {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92em;
  color: var(--cyan);
  letter-spacing: 0.04em;
}
.topbar__search {
  flex: 1; max-width: 360px; display: flex; align-items: center; gap: 8px;
  border: 1px solid var(--border-field); background: var(--bg-elev); padding: 0 12px; height: 40px;
  clip-path: polygon(0 0, calc(100% - var(--chamfer-sm)) 0, 100% var(--chamfer-sm), 100% 100%, var(--chamfer-sm) 100%, 0 calc(100% - var(--chamfer-sm)));
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.topbar__search:focus-within {
  border-color: color-mix(in srgb, var(--cyan) 50%, var(--border));
  box-shadow: var(--glow-cyan);
}
.topbar__search input {
  flex: 1; border: 0; background: transparent; outline: none; min-width: 0;
}
.topbar__search input::placeholder { color: var(--fg-faint); }
.topbar__search svg { color: var(--fg-faint); flex-shrink: 0; }
.search-kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-faint);
  border: 1px solid var(--border);
  padding: 2px 8px;
  line-height: 1.4;
}
.topbar__nav { display: flex; gap: 2px; }
.topbar__nav a {
  padding: 8px 12px; color: var(--fg-muted); font-size: 14px;
  min-height: 40px; display: inline-flex; align-items: center;
  transition: color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.topbar__nav a.is-active, .topbar__nav a:hover { color: var(--fg); }
.topbar__nav a.is-active {
  box-shadow: inset 0 -2px 0 var(--cyan);
}
.topbar__actions { display: flex; align-items: center; gap: 8px; margin-left: auto; flex-shrink: 0; }
.topbar__actions .btn { height: 40px; }
.topbar__actions .credits-badge,
.topbar__actions .user-btn { height: 40px; }

/* ——— Buttons ——— */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 44px; padding: 0 16px; font-size: 14px; font-weight: 500;
  border: 1px solid transparent;
  clip-path: polygon(0 0, calc(100% - var(--chamfer-sm)) 0, 100% var(--chamfer-sm), 100% 100%, var(--chamfer-sm) 100%, 0 calc(100% - var(--chamfer-sm)));
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), filter var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.btn:active { filter: brightness(0.9); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; color: var(--fg-faint); }
.btn--ghost {
  border-color: var(--border-strong); color: var(--fg); background: transparent;
}
.btn--ghost:hover {
  border-color: color-mix(in srgb, var(--cyan) 45%, var(--border-strong));
  color: var(--cyan);
}
.btn--primary {
  background: var(--cyan); color: var(--cyan-on);
  box-shadow: var(--glow-cyan);
}
.btn--primary:hover { filter: brightness(1.06); box-shadow: var(--glow-cyan-soft); }
.btn--magenta {
  background: var(--magenta); color: var(--magenta-on);
  box-shadow: var(--glow-magenta);
}
.btn--magenta:hover { filter: brightness(1.06); }
.btn--block { width: 100%; clip-path: none; height: 44px; }
.btn-text {
  display: inline-flex; align-items: center; height: 44px; padding: 0 12px;
  font-size: 14px; font-weight: 500; color: var(--magenta);
  text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px;
  background: transparent; border: 0;
  transition: color var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.btn-text:hover { color: var(--fg); }

/* ——— Auth chrome ——— */
.credits-badge {
  display: inline-flex; align-items: center; gap: 8px;
  height: 40px; padding: 0 12px;
  border: 1px solid var(--border-field); font-size: 13px; color: var(--fg-muted);
  background: var(--bg-elev);
  clip-path: polygon(0 0, calc(100% - var(--chamfer-sm)) 0, 100% var(--chamfer-sm), 100% 100%, var(--chamfer-sm) 100%, 0 calc(100% - var(--chamfer-sm)));
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.auth-guest .credits-badge:hover {
  border-color: color-mix(in srgb, var(--magenta) 40%, var(--border));
  color: var(--fg);
}
.credits-badge__val {
  color: var(--magenta);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 8px color-mix(in srgb, var(--magenta) 35%, transparent);
}
.auth-guest { display: none; align-items: center; gap: 8px; }
.auth-user { display: none; align-items: center; gap: 8px; position: relative; }
body[data-auth="guest"] .auth-guest { display: flex; }
body[data-auth="user"] .auth-user { display: flex; }
.user-menu { position: relative; }
.user-btn {
  display: flex; align-items: center; gap: 8px;
  height: 40px; padding: 0 12px; border: 1px solid var(--border); font-size: 13px;
  background: var(--bg-elev);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.user-btn:hover {
  border-color: color-mix(in srgb, var(--cyan) 35%, var(--border));
}
.avatar {
  width: 22px; height: 22px; background: var(--magenta); color: var(--magenta-on);
  display: grid; place-items: center; font-size: 11px; font-weight: 700;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}
.dropdown {
  position: absolute; right: 0; top: calc(100% + 6px);
  min-width: 168px; background: var(--bg-elev); border: 1px solid var(--border-neon); z-index: 50;
  box-shadow: 0 12px 32px var(--shadow-deep);
}
.dropdown button {
  display: block; width: 100%; text-align: left; padding: 12px 16px; font-size: 13px; color: var(--fg-muted);
  min-height: 44px;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.dropdown button:hover { background: var(--card); color: var(--fg); }
@media (max-width: 900px) {
  .topbar__nav, .topbar__search { display: none; }
  .topbar__inner { height: 56px; }
}

/* ——— Hero ——— */
.hero {
  border-bottom: 1px solid var(--border);
  padding: 56px 0 48px;
}
.hero__grid {
  display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: end;
}
@media (max-width: 800px) {
  .hero { padding: 32px 0 28px; }
  .hero__grid { grid-template-columns: 1fr; gap: 24px; }
}
.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(28px, 4.6vw, 44px);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.03em;
  overflow-wrap: break-word;
  min-width: 0;
  text-wrap: balance;
  color: var(--fg);
}
.hero p {
  margin: 0 0 24px;
  color: var(--fg-muted);
  max-width: 34ch;
  font-size: 16px;
}
.hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.hero__meta {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px;
  background: var(--border); border: 1px solid var(--border-neon);
  color: var(--fg);
}
.hero__meta > div {
  background: var(--bg-elev);
  color: var(--fg);
  padding: 16px;
  position: relative;
}
.hero__meta > div::before {
  content: "";
  position: absolute; top: 0; left: 0; width: 14px; height: 2px;
  background: var(--cyan);
}
.hero__meta > div:nth-child(2)::before { background: var(--magenta); }
.hero__meta > div:nth-child(3)::before {
  background: color-mix(in srgb, var(--cyan) 50%, var(--magenta));
}
.hero__meta strong {
  display: block; font-size: 24px; letter-spacing: -0.02em;
  color: var(--fg); line-height: 1.2; margin-bottom: 4px;
}
.hero__meta span { color: var(--fg-faint); font-size: 12px; }

/* ——— Tools section ——— */
.section { padding: 48px 0 40px; }
@media (max-width: 800px) { .section { padding: 32px 0 28px; } }
.section__head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 16px;
  margin-bottom: 16px;
}
.section__head h2 {
  margin: 0; font-size: clamp(22px, 2.2vw, 28px); font-weight: 600; letter-spacing: -0.02em;
}
.section__head p { margin: 0; color: var(--fg-faint); font-size: 13px; }

.cats {
  display: flex; flex-wrap: nowrap; gap: 8px; margin-bottom: 24px;
  overflow-x: auto; -webkit-overflow-scrolling: touch;
  padding-bottom: 4px;
  scrollbar-width: none;
}
.cats::-webkit-scrollbar { display: none; }
.cats button {
  height: 40px; padding: 0 16px; font-size: 13px; color: var(--fg-muted);
  border: 1px solid var(--border-field);
  background: var(--bg-elev);
  white-space: nowrap;
  flex-shrink: 0;
  clip-path: polygon(0 0, calc(100% - var(--chamfer-sm)) 0, 100% var(--chamfer-sm), 100% 100%, var(--chamfer-sm) 100%, 0 calc(100% - var(--chamfer-sm)));
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.cats button.is-active {
  color: var(--cyan-on);
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: var(--glow-cyan);
}
.cats button:hover:not(.is-active) {
  color: var(--fg);
  border-color: color-mix(in srgb, var(--magenta) 40%, var(--border));
}
.cats button:active:not(.is-active) {
  border-color: color-mix(in srgb, var(--cyan) 35%, var(--border));
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
@media (max-width: 1024px) { .tool-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 768px) { .tool-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; } }
.tool-card {
  position: relative;
  background: var(--card);
  color: var(--fg);
  padding: 20px 16px 16px;
  min-height: 176px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 1px solid var(--border);
  clip-path: polygon(0 0, calc(100% - var(--chamfer)) 0, 100% var(--chamfer), 100% 100%, var(--chamfer) 100%, 0 calc(100% - var(--chamfer)));
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.tool-card::after {
  content: "";
  position: absolute; top: 0; right: 0;
  width: 12px; height: 12px;
  background: linear-gradient(135deg, transparent 48%, color-mix(in srgb, var(--cyan) 50%, transparent) 50%);
  pointer-events: none;
}
.tool-card:hover {
  border-color: color-mix(in srgb, var(--cyan) 50%, var(--border));
  box-shadow: var(--glow-cyan);
  background: var(--bg-elev);
  transform: translateY(-2px);
}
.tool-card:active {
  transform: translateY(0);
  filter: brightness(0.98);
}
.tool-card:focus-visible {
  border-color: color-mix(in srgb, var(--cyan) 55%, var(--border));
  background: var(--bg-elev);
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}
.tool-card__icon {
  width: 36px; height: 36px; display: grid; place-items: center;
  border: 1px solid var(--border-neon); color: var(--cyan); margin-bottom: 4px;
  background: color-mix(in srgb, var(--cyan) 7%, transparent);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.tool-card:hover .tool-card__icon {
  background: color-mix(in srgb, var(--cyan) 12%, transparent);
  border-color: color-mix(in srgb, var(--cyan) 45%, var(--border));
}
.tool-card__name { margin: 0; font-size: 15px; font-weight: 600; letter-spacing: -0.01em; }
.tool-card__desc { margin: 0; flex: 1; color: var(--fg-faint); font-size: 13px; line-height: 1.45; }
.tool-card__foot {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 12px; border-top: 1px solid var(--border); margin-top: auto;
  gap: 8px;
}
.tool-card__cost {
  font-size: 12px; color: var(--fg-muted);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.tool-card__cost.is-disabled { color: var(--danger); }
.tool-card__cta {
  font-size: 12px; color: var(--cyan); font-weight: 500;
  transition: opacity var(--dur) var(--ease), letter-spacing var(--dur) var(--ease);
}
.tool-card:hover .tool-card__cta { letter-spacing: 0.02em; }
.tool-card__badge {
  position: absolute; top: 12px; right: 14px;
  font-size: 11px; color: var(--magenta-on); background: var(--magenta); padding: 4px 8px;
  box-shadow: var(--glow-magenta);
  font-weight: 500;
}
.tool-card.is-locked { opacity: .55; }
.tool-card.is-locked:hover { opacity: .7; }
.empty {
  border: 1px dashed var(--border-strong); padding: 48px 24px; text-align: center; color: var(--fg-muted);
  clip-path: polygon(0 0, calc(100% - var(--chamfer)) 0, 100% var(--chamfer), 100% 100%, var(--chamfer) 100%, 0 calc(100% - var(--chamfer)));
}

/* ——— Pricing band ——— */
.band {
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 40px 0;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--cyan) 6%, transparent), transparent 38%, color-mix(in srgb, var(--magenta) 6%, transparent)),
    var(--bg-elev);
  color: var(--fg);
}
.band__inner {
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.band h2 { margin: 0 0 8px; font-size: clamp(22px, 2.2vw, 28px); letter-spacing: -0.02em; font-weight: 600; }
.band p { margin: 0; color: var(--fg-muted); font-size: 14px; max-width: 42ch; }

/* ——— Footer ——— */
.footer {
  padding: 36px 0 56px; color: var(--fg-faint); font-size: 13px;
}
.footer__row {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  border-top: 1px solid var(--border); padding-top: 24px;
  align-items: center;
}
.footer nav { display: flex; gap: 20px; }
.footer a {
  transition: color var(--dur) var(--ease);
  min-height: 44px; display: inline-flex; align-items: center;
}
.footer a:hover { color: var(--cyan); }

/* ——— Modal ——— */
.modal[hidden] { display: none !important; }
.modal {
  position: fixed; inset: 0; z-index: 80;
  background: var(--overlay); display: grid; place-items: center; padding: 20px;
}
.modal__panel {
  width: min(100%, 400px);
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border-neon);
  padding: 28px 24px 24px;
  box-shadow: var(--glow-cyan-soft), 0 24px 48px var(--shadow-deep);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  position: relative;
}
.modal__tabs { display: flex; border: 1px solid var(--border); margin-bottom: 20px; }
.modal__tabs button {
  flex: 1; height: 40px; font-size: 13px; color: var(--fg-muted);
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.modal__tabs button.is-active {
  background: var(--cyan); color: var(--cyan-on);
}
.modal h2 { margin: 0 0 8px; font-size: 20px; letter-spacing: -0.02em; }
.modal__sub { margin: 0 0 20px; color: var(--fg-muted); font-size: 14px; }
.field { display: grid; gap: 8px; margin-bottom: 16px; }
.field label { font-size: 13px; color: var(--fg-muted); }
.field input {
  height: 44px; padding: 0 12px; border: 1px solid var(--border-field); background: var(--bg-elev); outline: none;
}
.field input:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}
.modal__close {
  position: absolute; top: 16px; right: 16px;
  width: 36px; height: 36px; border: 1px solid var(--border); color: var(--fg-muted);
  display: grid; place-items: center; font-size: 18px; line-height: 1;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.modal__close:hover { color: var(--fg); border-color: var(--border-strong); }
.linkish {
  color: var(--magenta); text-decoration: underline; background: none; border: 0; cursor: pointer; font: inherit;
  text-underline-offset: 3px;
}
.auth-hint { margin-top: 16px; font-size: 13px; color: var(--fg-muted); text-align: center; }

/* ——— Toast / preview / mobile ——— */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: var(--fg); color: var(--bg); padding: 12px 16px; font-size: 13px; z-index: 90;
  border: 1px solid var(--cyan);
  max-width: min(90vw, 360px);
}
.toast[hidden] { display: none !important; }
.preview-bar {
  position: fixed; left: 12px; bottom: 12px; z-index: 70;
  display: flex; gap: 4px; background: var(--bg-elev); border: 1px solid var(--border); padding: 4px;
}
.preview-bar .chip {
  height: 32px; padding: 0 12px; font-size: 11px; color: var(--fg-muted); border: 1px solid transparent;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.preview-bar .chip.is-active { color: var(--cyan-on); background: var(--cyan); }
.preview-bar .chip:hover:not(.is-active) { color: var(--fg); }
.mobile-search {
  display: none; padding: 12px 0 0;
}
@media (max-width: 900px) {
  .mobile-search { display: block; }
  .mobile-search .topbar__search { max-width: none; width: 100%; clip-path: none; height: 44px; }
}
.bottom-nav {
  display: none; position: sticky; bottom: 0; z-index: 30;
  border-top: 1px solid var(--border); background: color-mix(in srgb, var(--bg) 94%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding-bottom: env(safe-area-inset-bottom, 0);
}
.bottom-nav__inner {
  display: grid; grid-template-columns: repeat(4, 1fr); height: 56px;
}
.bottom-nav a {
  display: grid; place-items: center; gap: 2px; font-size: 11px; color: var(--fg-faint);
  min-height: 44px;
  transition: color var(--dur) var(--ease);
}
.bottom-nav a.is-active { color: var(--cyan); }
.bottom-nav a:hover { color: var(--fg); }
@media (max-width: 700px) {
  .bottom-nav { display: block; }
  .footer { padding-bottom: 88px; }
  .preview-bar { bottom: 68px; }
  .toast { bottom: 76px; }
  .band { padding: 32px 0; }
  .band h2 { font-size: 18px; }
}

@media (min-width: 1440px) {
  .hero { padding: 64px 0 56px; }
  .section { padding: 56px 0 48px; }
}

@media (prefers-reduced-motion: reduce) {
  .fx-scan { display: none; }
  html { scroll-behavior: auto; }
  .tool-card:hover { transform: none; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}