/* ==========================================================================
   劳动权益计算器 · 全站样式
   设计方向：法律文书的克制感（宋体标题）＋ 工具站的清晰度（无衬线正文）
   主色：墨蓝 #1f4e79　强调：赭橙 #b45309　底色：暖纸 #f7f5f0
   ========================================================================== */

:root {
  --ink: #1b2430;
  --ink-soft: #3d4a5a;
  --muted: #6b6f76;
  --line: #e3ddd1;
  --line-strong: #cfc7b7;
  --paper: #f7f5f0;
  --paper-deep: #efeae0;
  --card: #ffffff;
  --primary: #1f4e79;
  --primary-dark: #173c5d;
  --primary-soft: #eef3f8;
  --accent: #b45309;
  --accent-soft: #fdf3e6;
  --ok: #166534;
  --ok-soft: #ecf7ee;
  --warn: #b91c1c;
  --warn-soft: #fdeeee;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 2px rgba(27, 36, 48, 0.05), 0 8px 24px -18px rgba(27, 36, 48, 0.3);
  --container: 1120px;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
  --serif: "Songti SC", "STSong", "Noto Serif SC", "Source Han Serif SC", "SimSun", Georgia, serif;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--primary);
  text-decoration: none;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--primary);
  color: #fff;
  padding: 10px 16px;
  z-index: 100;
}

.skip-link:focus {
  left: 12px;
  top: 12px;
}

/* ============================== 页头 ============================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  flex-shrink: 0;
}

.brand:hover {
  text-decoration: none;
}

.brand__mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-family: var(--serif);
  font-size: 17px;
  display: grid;
  place-items: center;
  letter-spacing: 0;
}

.brand__text {
  font-size: 16px;
  letter-spacing: 0.3px;
}

.brand__sub {
  font-size: 11px;
  color: var(--muted);
  font-weight: 400;
  letter-spacing: 0;
  margin-left: 2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav::-webkit-scrollbar {
  display: none;
}

.nav a {
  padding: 6px 9px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--ink-soft);
  white-space: nowrap;
  text-decoration: none;
}

.nav a:hover {
  background: var(--primary-soft);
  color: var(--primary);
  text-decoration: none;
}

.nav a[aria-current="page"] {
  background: var(--primary);
  color: #fff;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 0;
  cursor: pointer;
  margin-left: auto;
}

.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
  position: relative;
  margin: 0 auto;
  transition: 0.2s;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle__bars::before {
  top: -6px;
}

.nav-toggle__bars::after {
  top: 6px;
}

.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 60;
  background: #fff;
  padding: 16px 20px 40px;
  overflow-y: auto;
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.mobile-nav ul {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}

.mobile-nav li a {
  display: block;
  padding: 13px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
  color: var(--ink);
}

.mobile-nav li a[aria-current="page"] {
  color: var(--primary);
  font-weight: 700;
}

/* ============================== 英雄区 ============================== */

.hero {
  position: relative;
  background: linear-gradient(180deg, #fbfaf6 0%, var(--paper) 60%);
  border-bottom: 1px solid var(--line);
  padding: 56px 0 44px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle at center, rgba(31, 78, 121, 0.07), transparent 68%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  max-width: 900px;
}

.hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  font-size: 12.5px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}

.hero h1 {
  margin: 0 0 16px;
  font-family: var(--serif);
  font-size: clamp(28px, 4.2vw, 46px);
  line-height: 1.28;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.hero__lead {
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17.5px);
  color: var(--ink-soft);
  max-width: 720px;
}

.hero__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 22px 0 0;
  padding: 0;
}

.hero__meta li {
  font-size: 13px;
  color: var(--primary);
  background: var(--primary-soft);
  border: 1px solid #dbe6f1;
  border-radius: 999px;
  padding: 3px 12px;
}

.hero--compact {
  padding: 34px 0 30px;
}

.hero--compact h1 {
  font-size: clamp(24px, 3.2vw, 36px);
}

/* ============================== 面包屑 ============================== */

.breadcrumb {
  padding: 14px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--line-strong);
}

.breadcrumb a {
  color: var(--muted);
}

.breadcrumb a:hover {
  color: var(--primary);
}

/* ============================== 通用区块 ============================== */

.section {
  padding: 64px 0;
}

.section--tight {
  padding: 44px 0;
}

.section--paper {
  background: var(--paper-deep);
}

.section__title {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.35;
  letter-spacing: 0.4px;
}

.section__title--sm {
  font-size: 19px;
}

.section__sub {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 14.5px;
  max-width: 760px;
}

.section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 26px;
  flex-wrap: wrap;
}

.section__head .section__title {
  margin-bottom: 0;
}

.prose {
  max-width: 780px;
}

.prose h2 {
  margin: 42px 0 12px;
  font-family: var(--serif);
  font-size: clamp(21px, 2.4vw, 26px);
  line-height: 1.4;
}

.prose h3 {
  margin: 30px 0 10px;
  font-size: 18px;
  line-height: 1.5;
}

.prose p {
  margin: 0 0 16px;
  color: var(--ink-soft);
}

.prose ul,
.prose ol {
  margin: 0 0 18px;
  padding-left: 22px;
  color: var(--ink-soft);
}

.prose li {
  margin-bottom: 8px;
}

.prose strong {
  color: var(--ink);
}

.prose blockquote {
  margin: 22px 0;
  padding: 14px 18px;
  border-left: 3px solid var(--primary);
  background: #fff;
  border-radius: 0 8px 8px 0;
  color: var(--ink-soft);
  font-size: 14.5px;
}

.prose blockquote p:last-child {
  margin-bottom: 0;
}

.prose code {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 1px 6px;
  font-size: 0.92em;
  color: var(--primary-dark);
}

/* ============================== 卡片 / 网格 ============================== */

.grid {
  display: grid;
  gap: 16px;
}

.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}

.card--flat {
  box-shadow: none;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.card p {
  margin: 0;
  font-size: 14.5px;
  color: var(--muted);
}

/* 工具入口卡 */
.toolcard {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}

.toolcard:hover {
  text-decoration: none;
  transform: translateY(-2px);
  border-color: var(--primary);
  box-shadow: 0 10px 28px -18px rgba(31, 78, 121, 0.5);
}

.toolcard__num {
  font-size: 11.5px;
  letter-spacing: 1.4px;
  color: var(--accent);
  font-weight: 700;
}

.toolcard__title {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink);
}

.toolcard__desc {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.65;
}

/* ============================== 计算器 ============================== */

.tool {
  padding: 40px 0;
  border-top: 1px solid var(--line);
}

.tool:first-of-type {
  border-top: 0;
}

.tool__head {
  max-width: 820px;
  margin-bottom: 22px;
}

.tool__kicker {
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}

.tool h2 {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: clamp(21px, 2.5vw, 28px);
  line-height: 1.4;
}

.tool__lead {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
}

.calc {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
  gap: 20px;
  align-items: start;
}

.calc__form {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 16px;
}

.calc__form > .field--wide,
.calc__form > .field--check,
.calc__actions,
.calc__privacy {
  grid-column: 1 / -1;
}

.calc__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.calc__privacy {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.field[hidden] {
  display: none;
}

.field__label {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  line-height: 1.5;
}

.field__control {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  overflow: hidden;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.field__control:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(31, 78, 121, 0.12);
}

.input {
  flex: 1 1 auto;
  min-width: 0;
  width: 100%;
  border: 0;
  background: transparent;
  padding: 10px 12px;
  font-size: 15px;
  font-family: inherit;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  appearance: none;
}

.input:focus {
  outline: none;
}

select.input {
  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='%236b6f76' d='M6 8 0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 10px;
  padding-right: 32px;
  cursor: pointer;
}

input[type="date"].input {
  min-height: 41px;
}

.field__unit {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  padding: 0 12px;
  font-size: 12.5px;
  color: var(--muted);
  background: #faf8f3;
  border-left: 1px solid var(--line);
  white-space: nowrap;
}

.field__hint {
  margin: 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

.field--check {
  background: #faf8f3;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}

.check {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  cursor: pointer;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-soft);
  line-height: 1.5;
}

.check input {
  width: 17px;
  height: 17px;
  margin: 1px 0 0;
  accent-color: var(--primary);
  flex: 0 0 auto;
}

.field--check .field__hint {
  padding-left: 26px;
  font-weight: 400;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 11px 26px;
  font-size: 15px;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: 0.16s;
  text-decoration: none;
}

.btn--primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 16px -10px rgba(31, 78, 121, 0.8);
}

.btn--primary:hover {
  background: var(--primary-dark);
  text-decoration: none;
}

.btn--ghost {
  background: #fff;
  border-color: var(--line-strong);
  color: var(--ink-soft);
}

.btn--ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
  text-decoration: none;
}

/* ============================== 结果区 ============================== */

.result {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  min-height: 220px;
  position: sticky;
  top: 84px;
}

.result__empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 12px;
  color: var(--muted);
  padding: 30px 10px;
  min-height: 180px;
}

.result__empty-mark {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  display: grid;
  place-items: center;
  font-size: 22px;
  font-family: var(--serif);
}

.result__empty p {
  margin: 0;
  font-size: 13.5px;
  max-width: 320px;
  line-height: 1.75;
}

.result__head {
  border-bottom: 1px dashed var(--line-strong);
  padding-bottom: 14px;
  margin-bottom: 14px;
}

.result__label {
  font-size: 13px;
  color: var(--muted);
  display: block;
  margin-bottom: 2px;
}

.result__value {
  font-family: var(--sans);
  font-size: clamp(30px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.15;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}

.result__value small {
  font-size: 16px;
  font-weight: 600;
  margin-left: 3px;
  color: var(--ink-soft);
}

.result__value--ok {
  color: var(--ok);
}

.result__value--warn {
  color: var(--warn);
}

.result__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  font-size: 12.5px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
}

.result__badge--ok {
  background: var(--ok-soft);
  color: var(--ok);
}

.result__badge--warn {
  background: var(--warn-soft);
  color: var(--warn);
}

.result__rows {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}

.result__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid #f0ece3;
  align-items: baseline;
}

.result__row:last-child {
  border-bottom: 0;
}

.result__row-label {
  font-size: 13.5px;
  color: var(--ink-soft);
}

.result__row-formula {
  display: block;
  font-size: 11.5px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  line-height: 1.5;
  margin-top: 1px;
}

.result__row-value {
  font-size: 15.5px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  color: var(--ink);
}

.result__row--total .result__row-label {
  font-weight: 700;
  color: var(--ink);
}

.result__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0 0 14px;
  padding: 14px 0 0;
  border-top: 1px dashed var(--line-strong);
}

.result__fact {
  background: #faf8f3;
  border-radius: 8px;
  padding: 8px 10px;
}

.result__fact dt {
  font-size: 11.5px;
  color: var(--muted);
}

.result__fact dd {
  margin: 2px 0 0;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.result__notes {
  margin: 0;
  padding: 0 0 0 18px;
  font-size: 12.5px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.result__notes li {
  margin-bottom: 6px;
}

.result__notes li::marker {
  color: var(--accent);
}

.result__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.result__legal {
  font-size: 11.5px;
  color: var(--muted);
  flex: 1 1 200px;
}

.result__copy {
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--ink-soft);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 12.5px;
  cursor: pointer;
  font-family: inherit;
}

.result__copy:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.result__error {
  color: var(--warn);
  font-size: 14px;
  background: var(--warn-soft);
  border: 1px solid #f3d2d2;
  border-radius: 10px;
  padding: 14px 16px;
}

/* ============================== 表格 ============================== */

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 560px;
}

table.data th,
table.data td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid #f0ece3;
  vertical-align: top;
}

table.data thead th {
  background: #faf8f3;
  font-weight: 700;
  font-size: 13px;
  color: var(--ink-soft);
  white-space: nowrap;
  border-bottom: 1px solid var(--line);
}

table.data tbody tr:last-child td {
  border-bottom: 0;
}

table.data tbody tr:hover {
  background: #fbfaf6;
}

table.data td.num,
table.data th.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.table-note {
  margin: 10px 0 0;
  font-size: 12.5px;
  color: var(--muted);
}

/* ============================== FAQ ============================== */

.faq__list {
  display: grid;
  gap: 10px;
  max-width: 900px;
}

.faq__item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: 15px 18px;
  font-weight: 600;
  font-size: 15px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.faq__item summary::-webkit-details-marker {
  display: none;
}

.faq__item summary::after {
  content: "+";
  margin-left: auto;
  color: var(--muted);
  font-weight: 400;
  font-size: 19px;
  line-height: 1;
}

.faq__item[open] summary::after {
  content: "−";
}

.faq__q::before {
  content: "问";
  font-size: 11px;
  color: #fff;
  background: var(--primary);
  border-radius: 4px;
  padding: 1px 4px;
  margin-right: 8px;
  vertical-align: 2px;
  font-weight: 500;
}

.faq__a {
  padding: 0 18px 16px 18px;
  color: var(--ink-soft);
  font-size: 14px;
}

.faq__a p {
  margin: 0;
}

/* ============================== 提示块 ============================== */

.callout {
  border-radius: var(--radius);
  padding: 16px 18px;
  font-size: 14px;
  line-height: 1.75;
  border: 1px solid var(--line);
  background: #fff;
}

.callout h3 {
  margin: 0 0 6px;
  font-size: 15px;
}

.callout p {
  margin: 0 0 8px;
}

.callout p:last-child {
  margin-bottom: 0;
}

.callout--info {
  background: var(--primary-soft);
  border-color: #d7e3ef;
}

.callout--warn {
  background: var(--accent-soft);
  border-color: #f2ddc2;
}

.callout--danger {
  background: var(--warn-soft);
  border-color: #f3d2d2;
}

.notes {
  margin: 0;
  padding: 0 0 0 20px;
  color: var(--ink-soft);
  font-size: 14px;
}

.notes li {
  margin-bottom: 8px;
}

/* ============================== 相关内容 ============================== */

.related__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.related__list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--ink-soft);
  font-size: 14px;
  text-decoration: none;
}

.related__list a:hover {
  border-color: var(--primary);
  color: var(--primary);
  text-decoration: none;
}

.related__list em {
  font-style: normal;
  color: var(--line-strong);
}

/* ============================== 列表页 ============================== */

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

.postcard {
  display: block;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}

.postcard:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  text-decoration: none;
}

.postcard h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  line-height: 1.5;
}

.postcard p {
  margin: 0 0 10px;
  font-size: 13.5px;
  color: var(--muted);
}

.postcard__meta {
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.5px;
}

/* ============================== 自查清单 ============================== */

.checker {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.checker__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 18px;
}

.checker__item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  cursor: pointer;
  font-size: 14px;
  color: var(--ink-soft);
  background: #faf8f3;
  transition: 0.15s;
}

.checker__item:hover {
  border-color: var(--primary);
}

.checker__item input {
  margin: 3px 0 0;
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
  flex: 0 0 auto;
}

.checker__item:has(input:checked) {
  background: var(--primary-soft);
  border-color: #b7cde2;
}

.checker__out {
  border-top: 1px dashed var(--line-strong);
  padding-top: 16px;
  font-size: 14px;
  color: var(--ink-soft);
}

.checker__out strong {
  color: var(--primary);
}

.checker__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--primary-soft);
  border: 1px solid #d7e3ef;
  color: var(--primary);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 13px;
  text-decoration: none;
}

.chip:hover {
  text-decoration: none;
  background: var(--primary);
  color: #fff;
}

/* ============================== 页脚 ============================== */

.site-footer {
  background: #1b2430;
  color: #c7ccd4;
  padding: 52px 0 26px;
  margin-top: 0;
}

.footer__top {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 30px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.site-footer .brand {
  color: #fff;
}

.site-footer .brand__mark {
  background: #2c5f8f;
}

.footer__brand p {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: #9aa3ae;
  max-width: 380px;
}

.footer__meta {
  font-size: 12px !important;
  color: #6f7885 !important;
}

.footer__col h2 {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 1px;
  color: #fff;
  font-weight: 600;
}

.footer__col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer__col li {
  margin-bottom: 7px;
}

.footer__col a {
  color: #9aa3ae;
  font-size: 13px;
  text-decoration: none;
}

.footer__col a:hover {
  color: #fff;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 20px;
  font-size: 12px;
  color: #6f7885;
}

.footer__bottom p {
  margin: 0;
}

/* ============================== 文章 ============================== */

.article {
  max-width: 780px;
  margin: 0 auto;
  padding: 8px 0 60px;
}

.article h1 {
  font-family: var(--serif);
  font-size: clamp(25px, 3.4vw, 34px);
  line-height: 1.35;
  margin: 0 0 14px;
}

.article__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-size: 12.5px;
  color: var(--muted);
  margin: 0 0 26px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.article__lead {
  font-size: 16.5px;
  color: var(--ink-soft);
  margin: 0 0 22px;
  padding: 16px 18px;
  background: #fff;
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
}

.article h2 {
  font-family: var(--serif);
  font-size: clamp(20px, 2.4vw, 25px);
  margin: 38px 0 12px;
  line-height: 1.45;
}

.article h3 {
  font-size: 17.5px;
  margin: 26px 0 10px;
}

.article p,
.article li {
  color: var(--ink-soft);
}

.article ul,
.article ol {
  padding-left: 22px;
  margin: 0 0 18px;
}

.article table {
  margin: 18px 0;
}

.article__foot {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}

.article__next {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 24px;
}

/* ============================== 404 / 其他 ============================== */

.muted {
  color: var(--muted);
}

.small {
  font-size: 13px;
}

.center {
  text-align: center;
}

.nowrap {
  white-space: nowrap;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 28px 0 0;
}

.stat {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}

.stat dt {
  font-size: 12px;
  color: var(--muted);
}

.stat dd {
  margin: 4px 0 0;
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}

/* ============================== 响应式 ============================== */

@media (max-width: 1080px) {
  .nav a {
    padding: 6px 7px;
    font-size: 13.5px;
  }
  .brand__sub {
    display: none;
  }
}

@media (max-width: 940px) {
  .nav {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
  .calc {
    grid-template-columns: minmax(0, 1fr);
  }
  .result {
    position: static;
  }
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .related__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer__top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15.5px;
  }
  .container {
    padding: 0 16px;
  }
  .hero {
    padding: 36px 0 30px;
  }
  .section {
    padding: 44px 0;
  }
  .section--tight {
    padding: 32px 0;
  }
  .calc__form {
    grid-template-columns: minmax(0, 1fr);
    padding: 18px;
  }
  .calc__form > .field {
    grid-column: 1 / -1;
  }
  .grid--2,
  .grid--3,
  .grid--4,
  .postlist,
  .checker__list,
  .stat-row {
    grid-template-columns: minmax(0, 1fr);
  }
  .related__list {
    grid-template-columns: minmax(0, 1fr);
  }
  .footer__top {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .result__facts {
    grid-template-columns: minmax(0, 1fr);
  }
  .tool {
    padding: 30px 0;
  }
  .table-wrap {
    border-radius: 10px;
  }
  .article__lead {
    font-size: 15.5px;
  }
}

@media print {
  .site-header,
  .site-footer,
  .nav-toggle,
  .mobile-nav,
  .calc__form,
  .related,
  .breadcrumb {
    display: none !important;
  }
  body {
    background: #fff;
  }
  .result {
    border: 1px solid #999;
    box-shadow: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* 锚点跳转时避开吸顶导航 */
[id] {
  scroll-margin-top: 84px;
}

/* 地区提示条 */
.region-hint {
  grid-column: 1 / -1;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-soft);
  background: #faf8f3;
  border: 1px dashed var(--line-strong);
  border-radius: 10px;
  padding: 10px 12px;
}

.region-hint strong {
  color: var(--primary);
}

/* 首页工具区块的补充行 */
.tool__more {
  margin: 14px 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  font-size: 13px;
  color: var(--muted);
}

.tool__formula {
  font-variant-numeric: tabular-nums;
}

.tool__more a {
  font-weight: 600;
}

.quicknav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 8px;
  padding: 0;
  list-style: none;
}

.quicknav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line-strong);
  background: #fff;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13.5px;
  color: var(--ink-soft);
  text-decoration: none;
}

.quicknav a:hover {
  border-color: var(--primary);
  color: var(--primary);
  text-decoration: none;
}

.home-tools {
  padding-top: 10px;
}

/* 公式总表分组间距 */
.formula-group {
  margin-bottom: 34px;
}

.formula-group:last-child {
  margin-bottom: 0;
}

.formula-group .section__title {
  margin: 0 0 12px;
}