:root {
  --primary: #16697a;        /* 黛蓝 */
  --primary-dark: #0f4c59;
  --primary-soft: #e8f1f3;
  --ink: #1f2a33;
  --ink-2: #5b6b76;
  --line: #e3e9ed;
  --bg: #f7f9fa;
  --good: #1b6b52;
  --ok: #2a5f84;
  --mid: #8a5c0f;
  --danger: #c0492f;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(20, 40, 50, .06), 0 4px 16px rgba(20, 40, 50, .05);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 0 16px; }
.hidden { display: none !important; }
.span-all { grid-column: 1 / -1; }

/* 键盘可达性：统一焦点样式 */
.tab:focus-visible,
.btn-primary:focus-visible,
.btn-ghost:focus-visible,
.card-main:focus-visible,
.modal-close:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ---------- 头部 ---------- */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 20;
}
.site-header .wrap {
  display: flex; align-items: center; gap: 24px;
  height: 60px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--primary); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 16px;
}
.brand-name { font-size: 18px; font-weight: 700; letter-spacing: .5px; }
.brand-tag {
  font-size: 12px; color: var(--primary);
  background: var(--primary-soft); border-radius: 20px; padding: 2px 10px;
}

/* Tab */
.tabs { display: flex; gap: 4px; overflow-x: auto; }
.tab {
  border: 0; background: none; cursor: pointer;
  padding: 8px 16px; border-radius: 8px;
  font-size: 15px; color: var(--ink-2); white-space: nowrap;
}
.tab:hover { background: var(--bg); color: var(--ink); }
.tab.active {
  color: #fff; background: var(--primary); font-weight: 600;
}

/* ---------- 步骤指示器 ---------- */
.steps {
  list-style: none; display: flex; gap: 8px;
  margin: 28px 0 18px; justify-content: center; flex-wrap: wrap;
}
.steps li {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--ink-2);
  background: #fff; border: 1px solid var(--line);
  padding: 6px 14px 6px 6px; border-radius: 20px;
}
.steps li span {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--bg); color: var(--ink-2);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600;
}
.steps li.active { color: var(--primary); border-color: var(--primary); font-weight: 600; }
.steps li.active span { background: var(--primary); color: #fff; }
.steps li.done { color: var(--good); border-color: var(--good); }
.steps li.done span { background: var(--good); color: #fff; }

/* ---------- 面板 ---------- */
.panel {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 28px; margin-bottom: 20px;
}
/* 粘性头部高度补偿，避免 scrollIntoView 后标题被遮住 */
#form-panel, #result-panel { scroll-margin-top: 80px; }
.panel-title { font-size: 22px; margin-bottom: 6px; }
.panel-title small { font-size: 13px; color: var(--ink-2); font-weight: 400; margin-left: 8px; }
.panel-sub { color: var(--ink-2); font-size: 14px; margin-bottom: 20px; }

/* 表单 */
.field { margin-bottom: 16px; }
.field label {
  display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px;
}
.field label .req { color: var(--danger); margin-left: 2px; }
.field .tip { font-weight: 400; color: var(--ink-2); font-size: 12px; margin-left: 8px; }
.field input, .field select {
  width: 100%; max-width: 420px; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: 8px;
  font-size: 15px; font-family: inherit; background: #fff; color: var(--ink);
}
.field input:focus, .field select:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(22, 105, 122, .12);
}
.field input.invalid, .field select.invalid {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(192, 73, 47, .12);
}
.field-row { display: flex; gap: 16px; flex-wrap: wrap; }
.field-row .field { flex: 1; min-width: 200px; }

.form-actions { display: flex; gap: 12px; margin-top: 8px; flex-wrap: wrap; align-items: center; }
.form-hint { color: var(--danger); font-size: 13px; }

/* 按钮 */
.btn-primary {
  background: var(--primary); color: #fff; border: 0; cursor: pointer;
  padding: 11px 28px; border-radius: 8px; font-size: 15px; font-weight: 600;
  transition: background .15s;
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-primary:disabled { opacity: .55; cursor: not-allowed; }
.btn-ghost {
  background: #fff; color: var(--primary); border: 1px solid var(--primary);
  padding: 10px 20px; border-radius: 8px; font-size: 14px; cursor: pointer;
}
.btn-ghost:hover { background: var(--primary-soft); }
.btn-ghost:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- 候选卡片 ---------- */
.result-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.result-actions { display: flex; gap: 10px; }
.result-actions .btn-ghost { padding: 6px 14px; font-size: 13px; }
.hint { font-size: 13px; color: var(--ink-2); margin: 4px 0 16px; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.card {
  border: 1px solid var(--line); border-radius: 10px; padding: 16px;
  cursor: pointer; transition: border-color .15s, box-shadow .15s;
  background: #fff; position: relative;
}
.card:hover { border-color: var(--primary); box-shadow: var(--shadow); }
.card.picked { border-color: var(--primary); background: var(--primary-soft); }
.card-main {
  display: block; width: 100%; text-align: left;
  background: none; border: 0; padding: 0; margin: 0;
  font: inherit; color: inherit; cursor: pointer;
  border-radius: 6px;
}
.card-main:hover .card-name { color: var(--primary); }
.card-top { display: flex; justify-content: space-between; align-items: flex-start; }
.card-name { font-size: 20px; font-weight: 700; }
.card-pinyin { font-size: 12px; color: var(--ink-2); margin-top: 2px; }
.card-en { font-size: 12px; color: var(--primary); margin-top: 2px; }
.card-hl { font-size: 13px; color: var(--ink-2); margin-top: 10px; min-height: 40px; }
.card-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 10px; }
.card-more { font-size: 12px; color: var(--ink-2); }

.score {
  font-weight: 700; font-size: 15px; padding: 2px 12px; border-radius: 20px;
}
.score.good { color: var(--good); background: #e6f3ee; }
.score.ok   { color: var(--ok);   background: #e8f0f6; }
.score.mid  { color: var(--mid);  background: #f8efdd; }

.pick {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--ink-2); cursor: pointer; user-select: none;
}
.pick input { accent-color: var(--primary); width: 15px; height: 15px; cursor: pointer; }

/* ---------- 对比栏 ---------- */
.compare-bar {
  position: sticky; bottom: 16px; z-index: 15;
  background: var(--ink); color: #fff; border-radius: 12px;
  padding: 12px 20px; display: flex; justify-content: space-between; align-items: center;
  gap: 12px; box-shadow: 0 6px 24px rgba(0,0,0,.25); margin-bottom: 16px;
}
.compare-bar .btn-primary { padding: 8px 18px; font-size: 14px; }
.compare-bar .btn-primary:disabled { opacity: .45; }

/* ---------- 弹层 / 报告 ---------- */
.modal { position: fixed; inset: 0; z-index: 50; display: flex; align-items: center; justify-content: center; padding: 16px; }
.modal-mask { position: absolute; inset: 0; background: rgba(15, 25, 32, .5); }
.modal-body {
  position: relative; background: #fff; border-radius: 14px;
  max-width: 640px; width: 100%; max-height: 88vh; overflow-y: auto;
  padding: 28px; box-shadow: 0 12px 48px rgba(0,0,0,.3);
}
.modal-close {
  position: absolute; top: 14px; right: 14px;
  width: 32px; height: 32px; border-radius: 50%; border: 0; cursor: pointer;
  background: var(--bg); color: var(--ink-2); font-size: 16px;
}
.modal-close:hover { background: var(--line); }

.report-head { display: flex; align-items: center; gap: 20px; margin-bottom: 8px; padding-right: 40px; }
.report-name { font-size: 30px; font-weight: 800; }
.report-name-sm { font-size: 22px; }
.report-pinyin { color: var(--ink-2); font-size: 13px; }
.report-en { color: var(--primary); font-size: 13px; margin-top: 2px; }
.report-total { text-align: center; margin-left: auto; }
.report-total .num { font-size: 34px; font-weight: 800; line-height: 1.1; }
.report-total .grade { font-size: 13px; font-weight: 700; }
.c-good { color: var(--good); } .c-ok { color: var(--ok); } .c-mid { color: var(--mid); }
.report-hl { color: var(--ink-2); font-size: 14px; margin-bottom: 16px; }

.radar-wrap { max-width: 380px; margin: 0 auto 8px; }
.chart-fallback { text-align: center; color: var(--ink-2); font-size: 13px; padding: 32px 12px; }
.dim-list { margin-top: 16px; }
.dim-item { margin-bottom: 14px; }
.dim-row { display: flex; justify-content: space-between; font-size: 14px; margin-bottom: 4px; }
.dim-row b { font-weight: 600; }
.dim-row .s { font-weight: 700; }
.bar { height: 6px; background: var(--bg); border-radius: 3px; overflow: hidden; }
.bar i { display: block; height: 100%; border-radius: 3px; background: var(--primary); }
.dim-comment { font-size: 13px; color: var(--ink-2); margin-top: 4px; }

.compare-row { display: flex; align-items: center; gap: 8px; margin-top: 4px; }
.compare-name { font-size: 12px; color: var(--ink-2); width: 70px; flex: 0 0 70px; }
.compare-row .bar { flex: 1; }
.compare-row .s { font-size: 12px; width: 32px; text-align: right; }

.warn-box {
  background: #fdf6ec; border: 1px solid #f3dfb8; color: #8a6212;
  border-radius: 8px; padding: 10px 14px; font-size: 13px; margin-top: 16px;
}
.warn-box b { display: block; margin-bottom: 4px; }
.warn-box ul { padding-left: 18px; }
.warn-box li { margin-top: 2px; }

.report-actions { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }

/* 生成中 */
.loading { text-align: center; padding: 40px 0; color: var(--ink-2); }
.spinner {
  width: 34px; height: 34px; margin: 0 auto 14px;
  border: 3px solid var(--primary-soft); border-top-color: var(--primary);
  border-radius: 50%; animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.error-box {
  background: #fdf0ee; border: 1px solid #f2c6bf; color: #9c3a2b;
  border-radius: 8px; padding: 12px 16px; font-size: 14px; margin-top: 14px;
}
.error-box p { margin-bottom: 10px; }
.error-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.error-actions .btn-primary { padding: 8px 20px; font-size: 14px; }
.error-actions .btn-ghost { padding: 8px 18px; font-size: 14px; }

/* 轻提示 */
.toast {
  position: fixed; left: 50%; bottom: 28px; z-index: 60;
  transform: translateX(-50%) translateY(12px);
  background: var(--ink); color: #fff; font-size: 14px;
  padding: 10px 18px; border-radius: 8px;
  opacity: 0; pointer-events: none;
  transition: opacity .2s, transform .2s;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.disclaimer { font-size: 12px; color: #5b6b76; padding: 8px 4px 32px; line-height: 1.7; }

/* ---------- 移动端 ---------- */
@media (max-width: 640px) {
  .site-header .wrap { gap: 8px; height: auto; padding-top: 8px; padding-bottom: 8px; }
  .brand-tag { display: none; }
  .panel { padding: 20px 16px; }
  .report-head { flex-wrap: wrap; }
  .report-total { margin-left: 0; text-align: left; display: flex; align-items: baseline; gap: 8px; }
  .compare-bar { flex-wrap: wrap; }
  .compare-bar .btn-primary { width: 100%; }
  .form-actions { align-items: stretch; }
  .form-actions .btn-primary, .form-actions .btn-ghost { flex: 1; }
  #form-panel, #result-panel { scroll-margin-top: 132px; }
}

/* 触控设备 / 窄屏：可点区域不小于 44px */
@media (max-width: 768px) {
  .tab { min-height: 44px; }
  .btn-primary, .btn-ghost { min-height: 44px; }
  .modal-close { width: 40px; height: 40px; }
  .pick { min-height: 44px; }
  .pick input { width: 18px; height: 18px; }
}

/* ---------- 无障碍：减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto !important; }
}