/* ==========================================================================
   叫我城南好不好 · 个人站点样式
   纯手写 CSS，无外部依赖。设计基调：纸感、克制、工具感。
   ========================================================================== */

:root {
  --paper: #f4f2ed;
  --paper-soft: #fbfaf7;
  --ink: #1f2320;
  --ink-soft: #3a3f3a;
  --muted: #6b716b;
  --muted-light: #8c918b;
  --line: #dedbd2;
  --line-strong: #c9c5ba;
  --accent: #2f6b5b;
  --accent-dark: #235147;
  --accent-soft: #e6ece7;
  --danger: #a4452f;
  --dark: #171a18;
  --dark-soft: #222622;
  --dark-line: #333832;
  --dark-text: #ece9e2;
  --dark-muted: #9aa198;
  --radius: 6px;
  --radius-lg: 10px;
  --shadow: 0 1px 2px rgba(31, 35, 32, 0.06);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Noto Sans CJK SC", "Source Han Sans SC", "WenQuanYi Micro Hei", sans-serif;
  --font-serif: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC",
    "STSong", "SimSun", serif;
  --font-mono: "SFMono-Regular", "Cascadia Mono", "JetBrains Mono", Consolas,
    "Liberation Mono", Menlo, monospace;
}

*,
*::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(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

a:hover {
  text-decoration: underline;
}

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

code,
pre,
.mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

::selection {
  background: var(--accent);
  color: #fff;
}

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

.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 760px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 8px 14px;
  z-index: 100;
}

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

/* --------------------------------------------------------------------------
   页头 / 导航
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 242, 237, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(120%) blur(6px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
}

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

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 5px;
  background: var(--ink);
  color: var(--paper-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-serif);
}

.brand small {
  color: var(--muted);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav a {
  color: var(--ink-soft);
  font-size: 14px;
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
}

.nav a:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
  text-decoration: none;
}

.nav a.is-active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.nav-cta {
  border: 1px solid var(--ink);
  color: var(--ink) !important;
  padding: 5px 12px !important;
  border-radius: var(--radius);
  font-size: 13px !important;
}

.nav-cta:hover {
  background: var(--ink);
  color: var(--paper-soft) !important;
}

.nav-toggle {
  display: none;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}

/* --------------------------------------------------------------------------
   通用排版块
   -------------------------------------------------------------------------- */

.section {
  padding: 72px 0;
  border-bottom: 1px solid var(--line);
}

.section:last-of-type {
  border-bottom: 0;
}

.section-tight {
  padding: 48px 0;
}

.eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.section-head {
  max-width: 720px;
  margin-bottom: 40px;
}

.section-title {
  font-size: 28px;
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.section-desc {
  margin-top: 12px;
  color: var(--muted);
  font-size: 15.5px;
}

.lead {
  font-size: 17px;
  color: var(--ink-soft);
}

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

.small {
  font-size: 13.5px;
}

.center {
  text-align: center;
}

.divider {
  height: 1px;
  background: var(--line);
  border: 0;
  margin: 0;
}

/* --------------------------------------------------------------------------
   按钮
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--radius);
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper-soft);
  font-size: 14.5px;
  font-family: inherit;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s ease, color 0.15s ease,
    border-color 0.15s ease;
}

.btn:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  text-decoration: none;
}

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

.btn-ghost:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper-soft);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

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

.btn-sm {
  min-height: 34px;
  padding: 0 12px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
}

.btn[aria-disabled="true"],
.btn.is-disabled {
  background: var(--paper-soft);
  border-color: var(--line);
  color: var(--muted-light);
  cursor: not-allowed;
  pointer-events: none;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.text-link {
  color: var(--accent-dark);
  border-bottom: 1px solid var(--line-strong);
  text-decoration: none;
}

.text-link:hover {
  border-bottom-color: var(--accent);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   首页 · 博客
   -------------------------------------------------------------------------- */

.blog-hero {
  padding: 84px 0 56px;
}

.blog-hero h1 {
  font-family: var(--font-serif);
  font-size: 40px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.3;
}

.blog-hero .lead {
  margin-top: 18px;
  max-width: 620px;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 28px;
  font-size: 14px;
}

.hero-links span {
  color: var(--line-strong);
}

.status-line {
  margin-top: 26px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  border: 1px solid var(--line);
  background: var(--paper-soft);
  padding: 5px 12px;
  border-radius: 999px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.post-list {
  border-top: 1px solid var(--line);
}

.post-row {
  display: grid;
  grid-template-columns: 118px 1fr 120px;
  gap: 24px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}

.post-date {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.post-main {
  min-width: 0;
}

.post-title {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--ink);
}

.post-excerpt {
  margin-top: 6px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

.post-tag {
  justify-self: end;
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 2px 9px;
  border-radius: 999px;
  white-space: nowrap;
}

.post-row.is-placeholder .post-title {
  color: var(--ink-soft);
}

.about-block {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 40px;
}

.about-block h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
}

.about-block p + p {
  margin-top: 14px;
}

.about-block p {
  color: var(--ink-soft);
  font-size: 15px;
}

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

.link-card {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-soft);
  color: var(--ink);
  font-size: 14px;
  text-decoration: none;
}

.link-card:hover {
  border-color: var(--line-strong);
  text-decoration: none;
}

.link-card span {
  color: var(--muted);
  font-size: 12.5px;
}

.product-card {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 32px;
  align-items: center;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper-soft);
}

.product-card h3 {
  font-size: 22px;
  font-weight: 600;
}

.product-card p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 14.5px;
}

.product-card .product-shot {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--dark);
}

.product-card .btn-group {
  margin-top: 20px;
}

/* --------------------------------------------------------------------------
   知人落地页
   -------------------------------------------------------------------------- */

.hero {
  padding: 76px 0 64px;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 56px;
  align-items: center;
}

.hero-title {
  font-size: 46px;
  line-height: 1.22;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.hero-title .accent {
  color: var(--accent);
}

.hero-lead {
  margin-top: 20px;
  font-size: 16.5px;
  color: var(--ink-soft);
  max-width: 520px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero-meta {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  font-size: 13px;
  color: var(--muted);
}

.hero-meta .dot {
  color: var(--line-strong);
}

.hero-visual {
  position: relative;
}

.browser-frame {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: 0 18px 40px -28px rgba(31, 35, 32, 0.5);
  overflow: hidden;
}

.browser-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 12px;
  background: #efede7;
  border-bottom: 1px solid var(--line);
}

.browser-bar i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--line-strong);
  display: block;
}

.browser-bar span {
  margin-left: 8px;
  font-size: 11px;
  color: var(--muted);
  font-family: var(--font-mono);
}

.browser-frame img {
  width: 100%;
}

.hero-note {
  margin-top: 14px;
  text-align: right;
  font-size: 12.5px;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 20px;
}

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

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

.card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper-soft);
}

.feature-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.08em;
}

.feature-title {
  margin-top: 14px;
  font-size: 17.5px;
  font-weight: 600;
}

.feature-desc {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.feature-list {
  margin-top: 12px;
  list-style: none;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.feature-list li {
  position: relative;
  padding-left: 14px;
  margin-top: 5px;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--line-strong);
}

.shots {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.shot {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper-soft);
  overflow: hidden;
}

.shot img {
  width: 100%;
  border-bottom: 1px solid var(--line);
}

.shot figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.shot figcaption .tag {
  color: var(--muted-light);
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.mobile-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  margin-top: 24px;
  align-items: start;
}

.phone {
  margin: 0;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background: var(--dark);
  padding: 6px;
  overflow: hidden;
}

.phone img {
  border-radius: 13px;
}

.phone figcaption {
  text-align: center;
  padding: 8px 4px 4px;
  font-size: 12.5px;
  color: var(--muted);
}

.dark-band {
  background: var(--dark);
  color: var(--dark-text);
  border-bottom: 0;
}

.dark-band .eyebrow {
  color: var(--dark-muted);
}

.dark-band .section-title {
  color: var(--dark-text);
}

.dark-band .section-desc {
  color: var(--dark-muted);
}

.privacy-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--dark-line);
  border: 1px solid var(--dark-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.privacy-item {
  background: var(--dark);
  padding: 24px;
}

.privacy-item h3 {
  font-size: 15px;
  color: var(--dark-text);
  font-weight: 600;
}

.privacy-item p {
  margin-top: 8px;
  font-size: 13.5px;
  color: var(--dark-muted);
  line-height: 1.75;
}

.privacy-item code {
  color: #c8d3c9;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper-soft);
  font-size: 14.5px;
}

.spec-table th,
.spec-table td {
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

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

.spec-table th {
  width: 180px;
  font-weight: 500;
  color: var(--muted);
  background: #efece5;
}

.cta-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 36px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--paper-soft);
}

.cta-card h2 {
  font-size: 26px;
  font-weight: 600;
}

.cta-card p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14.5px;
}

/* --------------------------------------------------------------------------
   下载页
   -------------------------------------------------------------------------- */

.download-hero {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--line);
}

.download-hero h1 {
  font-size: 34px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.download-hero .lead {
  margin-top: 12px;
  color: var(--muted);
  font-size: 15px;
}

.version-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 22px;
  font-size: 13.5px;
  color: var(--muted);
}

.version-line strong {
  color: var(--ink);
  font-weight: 600;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  line-height: 1;
  padding: 5px 9px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--ink-soft);
  background: var(--paper-soft);
}

.badge-accent {
  border-color: var(--accent);
  color: var(--accent-dark);
  background: var(--accent-soft);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.download-card {
  display: flex;
  flex-direction: column;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper-soft);
}

.download-card.is-recommended {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent) inset;
}

.download-card .platform {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
}

.download-card h3 {
  margin-top: 8px;
  font-size: 20px;
  font-weight: 600;
}

.download-card .desc {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--muted);
  min-height: 44px;
}

.meta-list {
  margin: 16px 0 20px;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.meta-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  border-bottom: 1px solid var(--line);
}

.meta-list li span:last-child {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 12.5px;
  text-align: right;
  word-break: break-all;
}

.download-card .btn {
  margin-top: auto;
}

.hash-block {
  margin-top: 14px;
}

.hash-block label {
  display: block;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--muted-light);
  text-transform: uppercase;
  margin-bottom: 5px;
}

.hash-line {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.hash {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--ink-soft);
  word-break: break-all;
  background: #efece5;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 7px 9px;
}

.copy-btn {
  flex: 0 0 auto;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  font-family: inherit;
  border-radius: var(--radius);
  padding: 4px 9px;
  cursor: pointer;
}

.copy-btn:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.copy-btn.is-copied {
  border-color: var(--accent);
  color: var(--accent-dark);
}

.copy-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.install-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.steps {
  list-style: none;
  counter-reset: step;
  border-top: 1px solid var(--line);
}

.steps li {
  counter-increment: step;
  position: relative;
  padding: 16px 0 16px 42px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  color: var(--ink-soft);
}

.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 17px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.steps li strong {
  color: var(--ink);
  font-weight: 600;
}

.version-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper-soft);
}

.version-table th,
.version-table td {
  text-align: left;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.version-table th {
  background: #efece5;
  color: var(--muted);
  font-weight: 500;
  font-size: 12.5px;
  letter-spacing: 0.04em;
}

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

.version-table td:first-child {
  font-family: var(--font-mono);
  font-size: 13px;
  white-space: nowrap;
}

.version-table ul {
  list-style: none;
  font-size: 13px;
  color: var(--ink-soft);
}

.version-table li + li {
  margin-top: 3px;
}

.version-table li::before {
  content: "· ";
  color: var(--muted-light);
}

.faq {
  border-top: 1px solid var(--line);
}

.faq details {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  cursor: pointer;
  padding: 16px 30px 16px 0;
  font-size: 15px;
  font-weight: 500;
  position: relative;
  list-style: none;
}

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

.faq summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--muted);
}

.faq details[open] summary::after {
  content: "–";
}

.faq .answer {
  padding: 0 0 18px;
  font-size: 14.5px;
  color: var(--ink-soft);
  max-width: 820px;
}

.notice {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  background: var(--paper-soft);
  font-size: 14px;
  color: var(--ink-soft);
}

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

.notice + .notice {
  margin-top: 12px;
}

.update-panel {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper-soft);
}

.update-panel h3 {
  font-size: 16px;
  font-weight: 600;
}

.update-status {
  margin-top: 4px;
  font-size: 13.5px;
  color: var(--muted);
}

.update-status.is-ok {
  color: var(--accent-dark);
}

.update-status.is-warn {
  color: var(--danger);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.plain-list {
  list-style: none;
  border-top: 1px solid var(--line);
}

.plain-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  color: var(--ink-soft);
}

.plain-list li strong {
  color: var(--ink);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   页脚
   -------------------------------------------------------------------------- */

.site-footer {
  padding: 48px 0 36px;
  background: var(--paper-soft);
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--ink);
}

.footer-desc {
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
  font-weight: 500;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.footer-col a {
  display: block;
  color: var(--ink-soft);
  font-size: 13.5px;
  padding: 3px 0;
}

.footer-bottom {
  margin-top: 32px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--muted-light);
}

/* --------------------------------------------------------------------------
   页面级补充
   -------------------------------------------------------------------------- */

.mobile-row.is-pair {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.download-card .platform .badge {
  margin-left: 6px;
  text-transform: none;
  letter-spacing: 0;
  vertical-align: 1px;
}

.update-panel code {
  color: var(--ink-soft);
}

.version-table code,
.notice code,
.plain-list code,
.steps code,
.faq .answer code {
  background: #efece5;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0 4px;
  color: var(--ink-soft);
}

/* 表格横向滚动（小屏保留完整信息） */
.table-scroll {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table-scroll .version-table {
  min-width: 640px;
}

.spec-table code {
  background: #efece5;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0 4px;
}

/* --------------------------------------------------------------------------
   响应式
   -------------------------------------------------------------------------- */

@media (max-width: 1080px) {
  .nav {
    gap: 14px;
  }

  .nav a {
    font-size: 13px;
  }
}

@media (max-width: 980px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-visual {
    order: 2;
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  body {
    font-size: 15.5px;
  }

  .nav {
    display: none;
  }

  .nav.is-open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    gap: 4px;
    padding: 14px 24px 18px;
    background: var(--paper-soft);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 12px 24px -18px rgba(31, 35, 32, 0.4);
  }

  .nav.is-open a {
    padding: 8px 0;
    font-size: 15px;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .header-inner {
    position: relative;
  }

  .blog-hero {
    padding: 56px 0 40px;
  }

  .blog-hero h1 {
    font-size: 31px;
  }

  .hero {
    padding: 52px 0 44px;
  }

  .hero-title {
    font-size: 34px;
  }

  .section {
    padding: 52px 0;
  }

  .section-title {
    font-size: 23px;
  }

  .post-row {
    grid-template-columns: 1fr auto;
    gap: 6px 14px;
  }

  .post-date {
    grid-column: 1 / -1;
  }

  .post-tag {
    grid-column: 2;
    grid-row: 2;
    align-self: start;
  }

  .about-block {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .grid-2,
  .grid-3,
  .download-grid,
  .install-grid,
  .two-col,
  .shots {
    grid-template-columns: 1fr;
  }

  .privacy-grid {
    grid-template-columns: 1fr;
  }

  .links-list {
    grid-template-columns: 1fr;
  }

  .product-card {
    grid-template-columns: 1fr;
  }

  .product-card .product-shot {
    order: -1;
  }

  .cta-card {
    padding: 26px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .download-hero h1 {
    font-size: 27px;
  }

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

  .spec-table th,
  .spec-table td {
    padding: 12px 14px;
    font-size: 13.5px;
  }

  .spec-table th {
    width: 104px;
  }

  .version-table th,
  .version-table td {
    padding: 12px 14px;
  }

  .hero-note {
    text-align: left;
  }

  .hero-meta {
    gap: 6px 12px;
  }
}

@media (max-width: 420px) {
  .container {
    padding: 0 18px;
  }

  .hero-title {
    font-size: 30px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .btn-group .btn {
    flex: 1 1 auto;
  }

  .mobile-row {
    grid-template-columns: 1fr;
  }

  .mobile-row.is-pair {
    grid-template-columns: 1fr;
    max-width: 320px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  * {
    transition: none !important;
  }
}

@media print {
  .site-header,
  .site-footer,
  .nav-toggle,
  .btn {
    display: none !important;
  }

  body {
    background: #fff;
  }

  .section {
    padding: 24px 0;
  }
}

/* --------------------------------------------------------------------------
   反馈与联系（全站页脚）
   -------------------------------------------------------------------------- */

.footer-contact {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  font-size: 13px;
  color: var(--muted);
}

.footer-contact .label {
  color: var(--muted-light);
  letter-spacing: 0.06em;
}

.footer-contact a {
  color: var(--ink-soft);
  border-bottom: 1px solid transparent;
}

.footer-contact a:hover {
  color: var(--ink);
  border-bottom-color: var(--line-strong);
  text-decoration: none;
}

.footer-contact .sep {
  color: var(--line-strong);
}

.footer-contact .wechat {
  color: var(--muted);
}

.contact-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-top: 12px;
  font-size: 14px;
}

.contact-inline a {
  border-bottom: 1px solid var(--line-strong);
}

.contact-inline a:hover {
  border-bottom-color: var(--accent);
  text-decoration: none;
}

.wechat-card {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-top: 16px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-soft);
  max-width: 430px;
}

.wechat-card img {
  width: 96px;
  height: 96px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  flex: 0 0 auto;
}

.wechat-card .wechat-meta {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}

.wechat-card .wechat-meta strong {
  display: block;
  color: var(--ink);
  font-size: 14px;
  margin-bottom: 2px;
}

.faq .wechat-card {
  max-width: none;
  margin-top: 12px;
}

/* --------------------------------------------------------------------------
   更新日志 / 版本发布
   -------------------------------------------------------------------------- */

.changelog-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.release {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper-soft);
}

.release.is-latest {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent) inset;
}

.release-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.release-head .version {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
}

.release-head .date {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
}

.release-head .release-tag {
  font-size: 12px;
  line-height: 1;
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  color: var(--accent-dark);
  background: var(--accent-soft);
}

.release-summary {
  margin-top: 14px;
  font-size: 14.5px;
  color: var(--muted);
}

.release-body {
  margin-top: 18px;
  display: grid;
  gap: 16px;
}

.release-item h4 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.release-item p {
  margin-top: 4px;
  font-size: 14px;
  color: var(--ink-soft);
}

.release-item .hint {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
}

.release-foot {
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 13px;
  color: var(--muted);
}

.release-foot a {
  color: var(--accent-dark);
}

.version-table tr[data-latest="true"] td:first-child {
  color: var(--accent-dark);
  font-weight: 600;
}

.pending-note {
  margin-top: 14px;
  padding: 10px 14px;
  border-left: 3px solid var(--line-strong);
  background: #efece5;
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--muted);
}

@media (max-width: 760px) {
  .release {
    padding: 20px;
  }

  .release-head .version {
    font-size: 18px;
  }

  .footer-contact {
    gap: 6px 14px;
  }
}