:root {
  --bg: #f6f4f1;
  --surface: #ffffff;
  --text: #1c1917;
  --muted: #57534e;
  --line: #e7e5e4;
  --accent: #0d9488;
  --accent-hover: #0f766e;
  --danger: #b91c1c;
  --warn: #b45309;
  --ok: #15803d;
  --radius: 12px;
  --shadow: 0 1px 3px rgb(0 0 0 / 0.08);
  --font: "Segoe UI", system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  z-index: 100;
}
.skip-link:focus {
  left: 0;
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand-link {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.brand-cn {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
}
.brand-en {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
}
.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.35rem 0.5rem;
  border-radius: 8px;
}
.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--accent);
  background: rgb(13 148 136 / 0.08);
}

.main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
  background: var(--surface);
}
.site-footer a {
  color: var(--accent);
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--line);
  margin-bottom: 1.25rem;
}

.card h1,
.card h2 {
  margin-top: 0;
  font-size: 1.35rem;
}
.card h2 {
  font-size: 1.1rem;
}

.lead {
  font-size: 1.05rem;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.55rem 1rem;
  border-radius: 10px;
  border: none;
  font-size: 0.95rem;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  background: var(--accent);
  color: #fff;
}
.btn:hover {
  background: var(--accent-hover);
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.btn-secondary {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--line);
}
.btn-secondary:hover {
  background: var(--bg);
}
.btn-ghost {
  background: transparent;
  color: var(--accent);
}
.btn-danger {
  background: var(--danger);
}

.form-grid {
  display: grid;
  gap: 1rem;
}
@media (min-width: 640px) {
  .form-grid.cols-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
}
.field input,
.field select {
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
}
.field .hint {
  font-size: 0.78rem;
  color: var(--muted);
}
.field-error {
  font-size: 0.78rem;
  color: var(--danger);
}

.wizard-steps {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}
.wizard-steps span {
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  background: var(--bg);
}
.wizard-steps .active {
  background: rgb(13 148 136 / 0.15);
  color: var(--accent);
  font-weight: 600;
}

.wizard-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

/* —— 家庭向导（优化布局与输入体验） —— */
.card-wizard {
  padding: 1.5rem 1.75rem 1.75rem;
}
.wizard-panel-intro {
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}
.wizard-panel {
  margin-bottom: 0.5rem;
}
.form-grid-tight {
  gap: 1.1rem;
}
.wizard-section {
  background: linear-gradient(180deg, #fafaf9 0%, #f5f5f4 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem 1.25rem;
  margin-bottom: 1.1rem;
}
.wizard-section-title {
  margin: 0 0 1rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #78716c;
}
@media (min-width: 640px) {
  .form-grid.cols-2 .field-span-2 {
    grid-column: 1 / -1;
  }
}
.field-row-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}
@media (max-width: 520px) {
  .field-row-duo {
    grid-template-columns: 1fr;
  }
}
.field-row-pay {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.65rem;
}
.field-row-pay .input-control {
  flex: 1 1 140px;
  min-width: 0;
}
.field-inline-label {
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
}
.input-payday {
  width: 4.5rem;
  flex: 0 0 auto;
  text-align: center;
}
.input-narrow {
  max-width: 8rem;
}
.input-control {
  min-height: 2.75rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid #d6d3d1;
  border-radius: 10px;
  font-size: 1.02rem;
  font-family: inherit;
  background: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
select.input-control {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2357534e' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
}
.field .input-control:focus,
.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgb(13 148 136 / 0.22);
}
.field-error {
  margin-top: 0.25rem;
}

.wizard-steps-bar {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.35rem;
  margin-bottom: 1.35rem;
  padding: 0.35rem;
  background: var(--bg);
  border-radius: 12px;
  border: 1px solid var(--line);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.wizard-step {
  flex: 1 1 0;
  min-width: 5.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  padding: 0.5rem 0.35rem;
  border-radius: 10px;
  font-size: 0.72rem;
  color: var(--muted);
  text-align: center;
  line-height: 1.25;
}
.wizard-step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.8rem;
  background: #e7e5e4;
  color: var(--muted);
}
.wizard-step.active {
  background: #fff;
  box-shadow: var(--shadow);
  color: var(--text);
}
.wizard-step.active .wizard-step-num {
  background: var(--accent);
  color: #fff;
}
.wizard-step-text {
  max-width: 8rem;
}

.banner {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}
.banner-warn {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  color: var(--warn);
}
.banner-danger {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--danger);
}
.banner-info {
  background: #f0fdfa;
  border: 1px solid #99f6e4;
  color: #0f766e;
}
.banner-readonly {
  background: #f5f5f4;
  border: 1px solid var(--line);
  color: var(--muted);
}

.summary-strip {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  margin-bottom: 1rem;
}
.summary-item {
  padding: 0.75rem 1rem;
  background: var(--bg);
  border-radius: 10px;
  border: 1px solid var(--line);
}
.summary-item strong {
  display: block;
  font-size: 1.1rem;
}
.summary-item span {
  font-size: 0.8rem;
  color: var(--muted);
}

.tag {
  display: inline-block;
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
}
.tag-red {
  background: #fef2f2;
  color: var(--danger);
}
.tag-yellow {
  background: #fffbeb;
  color: var(--warn);
}
.tag-green {
  background: #f0fdf4;
  color: var(--ok);
}

.chart-wrap {
  position: relative;
  height: 360px;
  margin-top: 0.5rem;
}
@media (max-width: 640px) {
  .chart-wrap {
    height: 300px;
  }
}

.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.tabs button {
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
}
.tabs button.active {
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

.stress-panel {
  display: grid;
  gap: 1rem;
}
@media (min-width: 720px) {
  .stress-panel {
    grid-template-columns: 1fr 1fr;
  }
}

.range-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.range-row input[type="range"] {
  width: 100%;
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 0;
}
.checklist li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
}
.checklist li:last-child {
  border-bottom: none;
}
.checklist input[type="checkbox"] {
  margin-top: 0.35rem;
  width: 1.1rem;
  height: 1.1rem;
}

.legal {
  font-size: 0.92rem;
  color: var(--muted);
}
.legal h2 {
  font-size: 1rem;
  color: var(--text);
  margin-top: 1.25rem;
}

.landing-hero h1 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}
.landing-hero .slogan {
  font-size: 1.1rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 1rem;
}

.landing-grid {
  display: grid;
  gap: 1rem;
}
@media (min-width: 720px) {
  .landing-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}
.landing-grid article {
  padding: 1rem;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--line);
}
.landing-grid h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}

code.inline {
  font-size: 0.85em;
  background: var(--bg);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

/* 收支行卡片 */
.line-card-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.line-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.85rem 1rem;
}
.line-card-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.65rem;
}
.line-kind-tag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #57534e;
  background: var(--bg);
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
}
.line-core-tag {
  margin-left: auto;
  font-size: 0.72rem;
}
.line-card-fields {
  margin-top: 0;
}
.btn-tiny {
  padding: 0.2rem 0.45rem;
  font-size: 0.78rem;
  margin-left: auto;
}
.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.82rem;
}
.add-chip-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.85rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--line);
}
.add-chip-row .hint {
  width: 100%;
  margin: 0 0 0.15rem;
}
@media (min-width: 520px) {
  .add-chip-row .hint {
    width: auto;
    margin: 0;
  }
}