:root {
  --bg: #f5f7f4;
  --ink: #1f2a28;
  --muted: #68736f;
  --line: #dbe2dc;
  --panel: #ffffff;
  --accent: #1d766f;
  --accent-dark: #12534e;
  --accent-soft: #e3f3ef;
  --warn: #b56a2d;
  --shadow: 0 18px 42px rgba(36, 52, 49, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(29, 118, 111, 0.08), rgba(245, 247, 244, 0) 280px),
    var(--bg);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
}

button,
select,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  width: 100%;
  padding: 24px;
}

.workspace {
  max-width: 1480px;
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  max-width: 760px;
  font-size: 30px;
  line-height: 1.25;
  letter-spacing: 0;
}

h2 {
  font-size: 18px;
  letter-spacing: 0;
}

.summary-pill {
  display: grid;
  min-width: 120px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  text-align: center;
}

.summary-pill span {
  color: var(--accent-dark);
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
}

.summary-pill small {
  color: var(--muted);
}

.generator {
  display: grid;
  grid-template-columns: minmax(270px, 0.82fr) minmax(360px, 1.08fr) minmax(420px, 1.35fr);
  gap: 16px;
  align-items: start;
}

.panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.setup-panel,
.choice-panel,
.result-panel {
  padding: 18px;
}

.choice-panel {
  display: grid;
  align-content: start;
}

.panel-title,
.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.hint {
  color: var(--muted);
  font-size: 13px;
}

.grid-two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.field {
  display: grid;
  gap: 7px;
  margin-bottom: 13px;
}

.field span,
.choice-group p {
  color: #3c4845;
  font-size: 14px;
  font-weight: 700;
}

select,
input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
  color: var(--ink);
  outline: none;
}

select,
input {
  min-height: 42px;
  padding: 0 11px;
}

textarea {
  resize: vertical;
  padding: 12px;
  line-height: 1.7;
}

select:focus,
input:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(29, 118, 111, 0.12);
}

.topic-brief {
  display: grid;
  gap: 6px;
  margin: 4px 0 14px;
  padding: 12px;
  border: 1px solid #cde4dc;
  border-radius: 8px;
  background: var(--accent-soft);
  color: #275650;
  line-height: 1.55;
}

.topic-brief strong {
  font-size: 14px;
}

.topic-brief span {
  font-size: 13px;
}

.compact-field {
  margin-top: 12px;
}

.block-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.block-option {
  display: grid;
  gap: 3px;
  width: 100%;
  min-height: 54px;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
  color: var(--ink);
  text-align: left;
}

.block-option:hover {
  border-color: #92bdb6;
  background: #f5faf8;
}

.block-option.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: inset 3px 0 0 var(--accent);
}

.block-option strong {
  font-size: 14px;
}

.block-option small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.match-list {
  display: grid;
  gap: 8px;
  max-height: 246px;
  overflow: auto;
  padding: 2px 2px 4px;
}

.match-card,
.match-empty {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
  text-align: left;
}

.match-card {
  display: grid;
  gap: 4px;
  padding: 10px 11px;
  color: var(--ink);
}

.match-card:hover {
  border-color: #92bdb6;
  background: #f5faf8;
}

.match-card.active {
  border-color: var(--accent);
  background: var(--accent-soft);
}

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

.match-card span,
.match-empty {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.match-empty {
  padding: 12px;
}

.choice-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.choice-group p {
  grid-column: 1 / -1;
}

.choice-group[data-key="tone"] {
  grid-template-columns: repeat(2, 1fr);
}

.choice {
  min-height: 42px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
  color: #33403d;
  white-space: normal;
}

.choice:hover {
  border-color: #92bdb6;
}

.choice.active {
  border-color: var(--accent);
  background: var(--accent);
  color: white;
  font-weight: 700;
}

.primary-btn,
.soft-btn,
.icon-btn,
.text-btn {
  border: 0;
  border-radius: 8px;
}

.primary-btn {
  width: 100%;
  min-height: 48px;
  margin-top: 6px;
  background: var(--accent);
  color: white;
  font-size: 16px;
  font-weight: 800;
}

.primary-btn:hover {
  background: var(--accent-dark);
}

.soft-btn {
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line);
  background: #f8faf8;
  color: #2f3d3a;
}

.icon-btn {
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  background: #f8faf8;
  color: var(--accent-dark);
  font-size: 18px;
}

.text-btn {
  padding: 7px 10px;
  background: transparent;
  color: var(--warn);
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.result-box {
  min-height: 378px;
  background: #fffefb;
  font-size: 15px;
}

.quality-row {
  display: grid;
  gap: 6px;
  margin-top: 12px;
  padding: 12px;
  border-radius: 8px;
  background: #f4f7fa;
  color: #4f5c62;
  line-height: 1.55;
}

.quality-row span {
  color: #263a45;
  font-weight: 800;
}

.quality-row p {
  font-size: 13px;
}

.history-section {
  margin-top: 18px;
}

.history-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.history-card,
.empty {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.84);
}

.history-card {
  display: grid;
  gap: 10px;
  min-height: 170px;
  padding: 14px;
  cursor: pointer;
}

.history-card:hover {
  border-color: #99bdb7;
  box-shadow: 0 12px 26px rgba(36, 52, 49, 0.07);
}

.history-card div {
  display: grid;
  gap: 4px;
}

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

.history-card span {
  color: var(--muted);
  font-size: 12px;
}

.history-card p {
  display: -webkit-box;
  overflow: hidden;
  color: #36413f;
  font-size: 13px;
  line-height: 1.65;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
}

.empty {
  grid-column: 1 / -1;
  padding: 18px;
  color: var(--muted);
}

@media (max-width: 1120px) {
  .generator {
    grid-template-columns: 1fr 1fr;
  }

  .result-panel {
    grid-column: 1 / -1;
  }

  .history-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 720px) {
  .app-shell {
    padding: 14px;
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  h1 {
    font-size: 24px;
  }

  .generator,
  .history-list,
  .grid-two {
    grid-template-columns: 1fr;
  }

  .choice-group,
  .choice-group[data-key="tone"] {
    grid-template-columns: 1fr 1fr;
  }

  .panel-title {
    align-items: flex-start;
  }

  .result-box {
    min-height: 320px;
  }
}