:root {
  color-scheme: light;
  --bg: #f4efe6;
  --bg-deep: #e8dcc7;
  --bg-mid: #efe4d3;
  --paper: rgba(255, 251, 245, 0.94);
  --paper-strong: #fffdf8;
  --ink: #1e1f1c;
  --muted: #7a7267;
  --line: rgba(65, 53, 34, 0.14);
  --accent: #0d6b61;
  --accent-strong: #0b4c45;
  --accent-soft: rgba(13, 107, 97, 0.12);
  --warn: #aa4d2f;
  --shadow: 0 20px 60px rgba(52, 39, 18, 0.14);
  --grid-line: rgba(255, 255, 255, 0.15);
  --hero-blob-a: rgba(13, 107, 97, 0.18);
  --hero-blob-b: rgba(206, 153, 67, 0.24);
  --panel-head-bg: linear-gradient(90deg, rgba(13, 107, 97, 0.08), transparent 46%);
  --group-card-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.75), rgba(255, 250, 242, 0.92));
  --field-title-color: #221f19;
  --item-bg: rgba(255, 253, 249, 0.92);
  --preview-bg: linear-gradient(180deg, rgba(21, 31, 29, 0.98), rgba(16, 24, 23, 0.98)), linear-gradient(135deg, rgba(13, 107, 97, 0.18), transparent 40%);
  --preview-text: #ebefe8;
  --preview-border: rgba(255, 255, 255, 0.06);
  --input-border: rgba(57, 46, 28, 0.16);
  --ghost-bg: rgba(255, 255, 255, 0.6);
  --ghost-border: rgba(65, 53, 34, 0.16);
  --ghost-hover-bg: rgba(255, 255, 255, 0.84);
  --scrollbar-track: rgba(120, 98, 56, 0.16);
  --scrollbar-thumb: rgba(13, 107, 97, 0.48);
  --scrollbar-thumb-hover: rgba(11, 76, 69, 0.74);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121617;
  --bg-deep: #0a0d0e;
  --bg-mid: #111719;
  --paper: rgba(20, 26, 28, 0.92);
  --paper-strong: #182022;
  --ink: #eef2ef;
  --muted: #9daaa6;
  --line: rgba(177, 204, 196, 0.16);
  --accent: #30b29d;
  --accent-strong: #97eadc;
  --accent-soft: rgba(48, 178, 157, 0.16);
  --warn: #ff8a63;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.34);
  --grid-line: rgba(255, 255, 255, 0.05);
  --hero-blob-a: rgba(48, 178, 157, 0.18);
  --hero-blob-b: rgba(226, 157, 81, 0.12);
  --panel-head-bg: linear-gradient(90deg, rgba(48, 178, 157, 0.1), transparent 46%);
  --group-card-bg: linear-gradient(180deg, rgba(27, 34, 36, 0.88), rgba(20, 26, 28, 0.96));
  --field-title-color: #f0f4f1;
  --item-bg: rgba(23, 30, 32, 0.96);
  --preview-bg: linear-gradient(180deg, rgba(8, 12, 13, 0.98), rgba(6, 9, 10, 0.98)), linear-gradient(135deg, rgba(48, 178, 157, 0.14), transparent 40%);
  --preview-text: #f3f6f4;
  --preview-border: rgba(255, 255, 255, 0.08);
  --ghost-bg: rgba(11, 16, 17, 0.88);
  --ghost-border: rgba(162, 196, 187, 0.18);
  --ghost-hover-bg: rgba(16, 22, 24, 0.96);
  --input-border: rgba(171, 201, 193, 0.34);
  --scrollbar-track: rgba(10, 16, 17, 0.88);
  --scrollbar-thumb: rgba(48, 178, 157, 0.52);
  --scrollbar-thumb-hover: rgba(111, 232, 210, 0.76);
}

* {
  box-sizing: border-box;
}

html,
body,
body::before,
.hero,
.panel,
.group-card,
.group-head,
.preview-scroll,
.primary-btn,
.ghost-btn,
.mini-btn,
.theme-icon-btn,
input[type="text"],
input[type="number"],
select,
.field-title,
.field-key,
.panel-head p,
.group-head p,
.hero-text {
  transition:
    background-color 220ms ease,
    color 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease,
    background 220ms ease;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "IBM Plex Sans", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(219, 177, 107, 0.24), transparent 28%),
    radial-gradient(circle at top right, rgba(13, 107, 97, 0.18), transparent 24%),
    linear-gradient(135deg, var(--bg) 0%, var(--bg-mid) 44%, var(--bg-deep) 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.06));
}

.page-shell {
  width: min(1480px, calc(100vw - 40px));
  margin: 24px auto;
  position: relative;
  z-index: 1;
}

.hero,
.panel {
  border: 1px solid var(--line);
  background: var(--paper);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(240px, 332px) auto;
  grid-template-rows: auto 1fr;
  gap: 24px;
  padding: 28px;
  border-radius: 28px;
  overflow: hidden;
  position: relative;
  align-items: start;
}

.theme-toggle {
  position: relative;
  grid-column: 3;
  grid-row: 1 / span 2;
  justify-self: end;
  align-self: start;
  z-index: 2;
  display: inline-flex;
  padding: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(10px);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}

.theme-icon-btn {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid var(--ghost-border);
  background: var(--ghost-bg);
  color: var(--ink);
  font-size: 18px;
  transition: transform 180ms ease, background-color 220ms ease, border-color 220ms ease, color 220ms ease, box-shadow 220ms ease;
}

.theme-icon-btn:hover {
  background: var(--ghost-hover-bg);
  transform: translateY(-1px);
}

.theme-icon-btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.hero::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -50px;
  width: 220px;
  height: 220px;
  border-radius: 30% 70% 70% 30% / 41% 46% 54% 59%;
  background: linear-gradient(135deg, var(--hero-blob-a), var(--hero-blob-b));
  filter: blur(6px);
}

.hero-copy {
  grid-column: 1;
  grid-row: 1 / span 2;
  min-width: 0;
  padding-right: 8px;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

.hero h1 {
  margin: 0;
  line-height: 1.02;
  font-size: clamp(28px, 4.2vw, 58px);
  font-family: "Noto Serif SC", serif;
  font-weight: 700;
  white-space: nowrap;
}

.hero-text {
  margin: 18px 0 0;
  max-width: 64ch;
  line-height: 1.7;
  color: var(--muted);
}

.hero-actions {
  grid-column: 2;
  grid-row: 1 / span 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: stretch;
  justify-self: stretch;
  gap: 12px;
  padding-top: 0;
  padding-right: 6px;
}

.workspace {
  display: grid;
  grid-template-columns: 1.18fr 0.82fr;
  gap: 20px;
  margin-top: 20px;
  align-items: start;
}

.panel {
  border-radius: 24px;
  padding: 20px;
}

.form-panel,
.preview-panel {
  height: calc(100vh - 240px);
  min-height: 720px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-scroll {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding-right: 6px;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

.panel-scroll::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

.panel-scroll::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
  border-radius: 999px;
}

.panel-scroll::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

.panel-scroll::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
  background-clip: padding-box;
}

.preview-scroll {
  padding-right: 0;
  border-radius: 18px;
  background: var(--preview-bg);
  box-shadow: inset 0 0 0 1px var(--preview-border);
}

.panel-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.panel-head h2 {
  margin: 0;
  font-size: 26px;
  font-family: "Noto Serif SC", serif;
}

.panel-head p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.form-root {
  display: grid;
  gap: 18px;
  align-content: start;
}

.group-card {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--group-card-bg);
  overflow: hidden;
}

.group-head {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px 12px;
  border-bottom: 1px solid rgba(65, 53, 34, 0.08);
  background: var(--panel-head-bg);
  cursor: pointer;
}

.group-head::-webkit-details-marker {
  display: none;
}

.group-head h3 {
  margin: 0 0 6px;
  font-size: 20px;
}

.group-head p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.fold-indicator {
  flex: 0 0 auto;
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 600;
}

.group-card[open] .fold-indicator {
  color: transparent;
  position: relative;
}

.group-card[open] .fold-indicator::after {
  content: "收起";
  color: var(--accent-strong);
  position: absolute;
  right: 0;
}

.group-body {
  display: grid;
  gap: 16px;
  padding: 16px 18px 18px;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: grid;
  gap: 8px;
}

.field.full {
  grid-column: 1 / -1;
}

.field-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--field-title-color);
}

.field-key {
  margin-top: -2px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
}

input[type="text"],
input[type="number"],
select {
  width: 100%;
  border: 1px solid var(--input-border);
  border-radius: 14px;
  padding: 12px 14px;
  color: var(--ink);
  background: var(--paper-strong);
  font: inherit;
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

input::placeholder {
  color: #a39a8c;
}

input:hover,
select:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
  transform: translateY(-1px);
}

button {
  font: inherit;
  cursor: pointer;
}

.primary-btn,
.ghost-btn,
.mini-btn {
  border-radius: 999px;
  padding: 11px 16px;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, color 180ms ease;
}

.primary-btn {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #f7f5ef;
}

.ghost-btn,
.mini-btn {
  border: 1px solid var(--ghost-border);
  background: var(--ghost-bg);
  color: var(--ink);
}

.danger-btn {
  color: var(--warn);
}

.primary-btn:hover,
.ghost-btn:hover,
.mini-btn:hover {
  transform: translateY(-1px);
}

.ghost-btn:hover,
.mini-btn:hover {
  background: var(--ghost-hover-bg);
}

.list-block,
.card-block {
  display: grid;
  gap: 10px;
}

.list-item,
.dynamic-card {
  display: grid;
  gap: 10px;
  border: 1px solid rgba(65, 53, 34, 0.12);
  border-radius: 18px;
  padding: 14px;
  background: var(--item-bg);
}

.list-item {
  grid-template-columns: 1fr auto;
  align-items: center;
}

.dynamic-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.dynamic-card-head strong {
  font-size: 14px;
}

.sub-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.listener-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.3fr 0.8fr;
  gap: 12px;
}

.toml-output {
  margin: 0;
  min-height: 0;
  height: 100%;
  overflow: visible;
  padding: 18px;
  color: var(--preview-text);
  background: transparent;
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  line-height: 1.75;
  white-space: pre-wrap;
}

@media (max-width: 1100px) {
  .workspace,
  .hero,
  .field-grid,
  .sub-grid,
  .listener-grid {
    grid-template-columns: 1fr;
  }

  .page-shell {
    width: min(100vw - 18px, 1480px);
    margin: 10px auto;
  }

  .hero {
    gap: 16px;
    padding: 18px;
    border-radius: 22px;
  }

  .theme-toggle {
    grid-column: 1;
    grid-row: 1;
    justify-self: end;
    align-self: start;
    gap: 6px;
    padding: 6px;
  }

  .theme-icon-btn {
    width: 34px;
    height: 34px;
    font-size: 16px;
  }

  .hero-copy {
    grid-column: 1;
    grid-row: 2;
    padding-right: 0;
  }

  .hero h1 {
    white-space: normal;
    font-size: clamp(28px, 8.5vw, 42px);
    line-height: 1.06;
  }

  .hero-text {
    margin-top: 12px;
    font-size: 14px;
    line-height: 1.55;
  }

  .hero-actions {
    grid-column: 1;
    grid-row: 3;
    gap: 10px;
    justify-self: stretch;
    padding-right: 0;
    padding-top: 0;
  }

  .primary-btn,
  .ghost-btn,
  .mini-btn {
    padding: 8px 12px;
  }

  .workspace {
    gap: 12px;
    margin-top: 12px;
  }

  .panel {
    padding: 16px;
    border-radius: 22px;
  }

  .panel-head {
    margin-bottom: 12px;
  }

  .panel-head h2 {
    font-size: 22px;
  }

  .panel-head p {
    font-size: 13px;
  }

  .toml-output {
    min-height: 420px;
    height: auto;
    padding: 14px;
    font-size: 12px;
    line-height: 1.6;
  }

  .form-panel,
  .preview-panel {
    height: auto;
    min-height: 0;
    overflow: visible;
  }

  .panel-scroll {
    flex: initial;
    min-height: 0;
    overflow: visible;
    padding-right: 0;
    overscroll-behavior: auto;
  }

  .form-root {
    min-height: auto;
  }

  .group-head {
    padding: 14px 16px 10px;
  }

  .group-head h3 {
    font-size: 18px;
  }

  .group-head p {
    font-size: 12px;
  }

  .group-body {
    padding: 14px 16px 16px;
    gap: 12px;
  }

  .field-title {
    font-size: 14px;
  }

  .field-key {
    font-size: 11px;
  }

  input[type="text"],
  input[type="number"],
  select {
    padding: 9px 12px;
    border-radius: 12px;
    font-size: 14px;
  }

  .field {
    gap: 6px;
  }

  .field-grid {
    gap: 10px;
  }

  .list-item,
  .dynamic-card {
    padding: 10px;
    border-radius: 14px;
  }
}