:root {
  --blue: #0868b8;
  --blue-dark: #064f8d;
  --blue-soft: #eaf2fb;
  --green: #90c020;
  --ink: #0f2236;
  --text: #34475a;
  --muted: #5b6b7c;
  --line: #e1e7ed;
  --line-strong: #d3dbe4;
  --mist: #f4f7fa;
  --night: #0d1d2e;
  --night-line: rgba(255, 255, 255, 0.12);
  --night-text: #c3d0dd;
  --gutter: 32px;
  --font: "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 96px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #fff;
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.3;
}

h2 {
  font-size: clamp(26px, 2.8vw, 36px);
}

h3 {
  font-size: 20px;
  line-height: 1.45;
}

p,
ul,
ol,
dl,
figure {
  margin: 0;
}

ul,
ol {
  padding: 0;
}

:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: #cfe3f6;
  color: var(--ink);
}

.wrap {
  width: min(1200px, calc(100% - var(--gutter) * 2));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 60;
  padding: 10px 16px;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
}

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

/* 按钮与链接 */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  transition: background-color 0.15s, border-color 0.15s, color 0.15s;
}

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

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

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

.btn-secondary:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.btn-quiet {
  border-color: var(--line);
  color: var(--ink);
}

.btn-quiet:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.btn-light {
  background: #fff;
  color: var(--ink);
}

.btn-light:hover {
  background: var(--blue-soft);
}

.btn-outline-light {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}

.btn-outline-light:hover {
  border-color: #fff;
}

.text-link {
  color: var(--blue);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.text-link:hover {
  color: var(--blue-dark);
}

.lead {
  font-size: 18px;
  line-height: 1.8;
}

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

/* 页头 */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.97);
}

.header-bar {
  display: flex;
  align-items: center;
  gap: 40px;
  height: 72px;
}

.brand {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 14px;
}

.brand img {
  width: auto;
  height: 40px;
}

.brand-company {
  padding-left: 14px;
  border-left: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.4;
}

.site-nav {
  display: flex;
  gap: 32px;
  margin-left: auto;
  font-size: 15px;
}

.site-nav a {
  position: relative;
  padding: 24px 0;
  color: var(--text);
}

.site-nav a:hover {
  color: var(--ink);
}

.site-nav a[aria-current="page"] {
  color: var(--blue);
  font-weight: 600;
}

.site-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: var(--blue);
}

.header-actions {
  display: flex;
  gap: 10px;
}

.header-actions .btn {
  min-height: 40px;
  padding: 0 16px;
  font-size: 14px;
}

.mobile-menu {
  display: none;
  margin-left: auto;
}

.mobile-menu summary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
  list-style: none;
  cursor: pointer;
}

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

.menu-icon,
.menu-icon::before,
.menu-icon::after {
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 1px;
  background: currentColor;
}

.menu-icon {
  position: relative;
}

.menu-icon::before,
.menu-icon::after {
  content: "";
  position: absolute;
  left: 0;
}

.menu-icon::before {
  top: -5px;
}

.menu-icon::after {
  top: 5px;
}

.mobile-menu[open] .menu-icon {
  background: transparent;
}

.mobile-menu[open] .menu-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.mobile-menu[open] .menu-icon::after {
  top: 0;
  transform: rotate(-45deg);
}

.mobile-panel {
  position: absolute;
  top: 100%;
  right: 0;
  left: 0;
  display: grid;
  padding: 4px var(--gutter) 24px;
  border-bottom: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 18px 36px -18px rgba(15, 34, 54, 0.3);
}

.mobile-panel a:not(.btn) {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 16px;
}

.mobile-panel a[aria-current="page"] {
  color: var(--blue);
  font-weight: 600;
}

.mobile-panel .btn {
  margin-top: 20px;
}

/* 首页首屏 */

.hero {
  padding-top: 88px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 64px;
  align-items: end;
}

.hero-title {
  font-size: clamp(40px, 5.6vw, 72px);
  font-weight: 750;
  line-height: 1.12;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.hero-copy .lead {
  margin-bottom: 28px;
}

.hero-shot {
  position: relative;
  margin-top: 64px;
}

.hero-shot img {
  width: 100%;
  aspect-ratio: 1440 / 660;
  object-fit: cover;
  object-position: left top;
  border: 1px solid #1d2f45;
  border-bottom: 0;
  border-radius: 14px 14px 0 0;
  box-shadow: 0 -6px 48px -14px rgba(13, 29, 46, 0.32);
}

.hero-shot figcaption {
  position: absolute;
  right: 16px;
  bottom: 16px;
  z-index: 1;
  padding: 3px 10px;
  border-radius: 6px;
  background: rgba(13, 29, 46, 0.78);
  color: #dbe5ee;
  font-size: 13px;
}

/* 通用区块 */

.section {
  padding: 96px 0;
}

.hero + .section,
.section + .section:not(.section-mist):not(.section-night) {
  border-top: 1px solid var(--line);
}

.section-mist {
  background: var(--mist);
  --line: #d9e1e9;
}

.section-night {
  background: var(--night);
  color: var(--night-text);
}

.section-night h2,
.section-night h3 {
  color: #fff;
}

.section-head {
  max-width: 720px;
  margin-bottom: 48px;
}

.section-head h2 {
  margin-bottom: 14px;
}

.section-head p {
  color: var(--muted);
  font-size: 17px;
}

.section-head-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  max-width: none;
}

.columns-3,
.columns-2 {
  display: grid;
  gap: 48px;
}

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

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

.column {
  padding-top: 24px;
  border-top: 2px solid var(--ink);
}

.column h3 {
  margin-bottom: 12px;
}

.column p {
  margin-bottom: 18px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 72px;
  align-items: start;
}

.split-copy h2 {
  margin-bottom: 18px;
}

.split-copy p + p {
  margin-top: 14px;
}

.split-copy .text-link {
  display: inline-block;
  margin-top: 22px;
}

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

.plain-list li {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.plain-list strong {
  display: block;
  margin-bottom: 4px;
  color: var(--ink);
  font-size: 18px;
}

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

.facts div {
  display: grid;
  grid-template-columns: 136px minmax(0, 1fr);
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

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

.facts dd {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
}

/* 实拍照片 */

.photo img {
  width: 100%;
  object-fit: cover;
  border-radius: 12px;
}

.photo figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
}

.photo-split {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 72px;
  align-items: center;
}

.photo-split .photo img {
  aspect-ratio: 4 / 5;
}

.photo-split .facts {
  margin-top: 28px;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.gallery .photo img {
  aspect-ratio: 3 / 4;
}

.gallery .gallery-wide {
  grid-column: 1 / -1;
}

.gallery .gallery-wide img {
  aspect-ratio: 16 / 7;
}

.contact-note {
  margin-bottom: 10px;
  color: var(--muted);
}

/* 截图 */

.shot img {
  width: 100%;
  border: 1px solid #1d2f45;
  border-radius: 12px;
  box-shadow: 0 24px 56px -30px rgba(13, 29, 46, 0.55);
}

.shot figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
}

.shot-on-dark img {
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.75);
}

.shot-on-dark figcaption {
  color: #93a6b8;
}

/* 首页产品区 */

.band-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 64px;
  align-items: center;
}

.band-copy h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 3.4vw, 44px);
}

.band-copy .lead {
  margin-bottom: 32px;
}

.value-list {
  margin-bottom: 36px;
  border-top: 1px solid var(--night-line);
}

.value-list > div {
  padding: 18px 0;
  border-bottom: 1px solid var(--night-line);
}

.value-list h3 {
  margin-bottom: 4px;
  font-size: 17px;
}

.value-list p {
  font-size: 15px;
}

/* 文章列表 */

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  color: var(--muted);
  font-size: 14px;
}

.post-meta > :first-child {
  color: var(--blue);
  font-weight: 600;
}

.post-meta a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 文章分类与系列 */

.topic-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 56px;
}

.topic-nav a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ink);
  font-size: 15px;
}

.topic-nav a:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.topic-nav span {
  color: var(--muted);
  font-size: 13px;
}

.series-block {
  margin-bottom: 72px;
  padding: 40px 44px;
  border-radius: 14px;
  background: var(--night);
  color: var(--night-text);
}

.series-block h2 {
  margin-bottom: 10px;
  color: #fff;
}

.series-desc {
  max-width: 40em;
  margin-bottom: 28px;
}

.series-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 48px;
  counter-reset: part;
  list-style: none;
}

.series-list li {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  column-gap: 8px;
  padding: 14px 0;
  border-top: 1px solid var(--night-line);
  counter-increment: part;
}

.series-list li::before {
  content: counter(part, decimal-leading-zero);
  grid-row: span 2;
  color: var(--green);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.series-list a {
  color: #fff;
  font-weight: 600;
  line-height: 1.5;
}

.series-list a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.series-list span {
  color: #8ea3b7;
  font-size: 14px;
}

.topic-block + .topic-block {
  margin-top: 72px;
}

.topic-block .post-meta > span:first-child {
  display: none;
}

.topic-head {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: 32px;
  align-items: baseline;
  margin-bottom: 20px;
}

.topic-head h2 {
  font-size: clamp(24px, 2.4vw, 30px);
}

.topic-head p {
  color: var(--muted);
}

.prose .series-nav {
  margin-top: 3em;
  padding: 24px 26px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--mist);
}

.prose .series-nav-title {
  margin-bottom: 16px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
}

.series-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.prose .series-step {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  text-decoration: none;
}

.prose .series-step:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.series-step span {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 400;
}

.series-next {
  grid-column: 2;
  text-align: right;
}

.prose img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
}

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

.post-item {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  column-gap: 40px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.post-item .post-meta {
  grid-row: span 2;
  flex-direction: column;
  align-content: flex-start;
  padding-top: 3px;
}

.post-title {
  margin-bottom: 8px;
  font-size: 20px;
  line-height: 1.45;
}

.post-title a:hover {
  color: var(--blue);
}

.post-summary {
  max-width: 46em;
  color: var(--muted);
}

.post-featured {
  max-width: 860px;
  margin-bottom: 64px;
}

.post-featured .post-meta {
  margin-bottom: 14px;
}

.post-featured-title {
  margin-bottom: 16px;
  font-size: clamp(28px, 3.2vw, 40px);
  text-wrap: balance;
}

.post-featured-title a:hover {
  color: var(--blue);
}

.post-featured .post-summary {
  margin-bottom: 20px;
  font-size: 18px;
}

.featured-points {
  margin-bottom: 28px;
  padding-left: 1.2em;
}

.featured-points li + li {
  margin-top: 6px;
}

.list-heading {
  margin-bottom: 8px;
  font-size: 22px;
}

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

/* 行动区 */

.cta-band {
  padding: 72px 0;
  background: var(--blue);
  color: #dceafa;
}

.cta-band h2 {
  margin-bottom: 10px;
  color: #fff;
  font-size: clamp(24px, 2.6vw, 32px);
}

.cta-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 32px 48px;
}

.cta-contact {
  display: grid;
  justify-items: end;
  gap: 4px;
}

.cta-phone {
  color: #fff;
  font-size: clamp(30px, 3.4vw, 42px);
  font-weight: 700;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

.cta-band .text-link {
  color: #fff;
}

/* 内页 */

.page-hero {
  padding: 36px 0 64px;
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  margin: 32px 0 18px;
  font-size: clamp(34px, 4.2vw, 52px);
  line-height: 1.2;
}

.page-hero .lead {
  max-width: 720px;
}

.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 48px;
  align-items: end;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
  list-style: none;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: #a7b3bf;
}

.breadcrumbs a:hover {
  color: var(--blue);
}

.breadcrumbs [aria-current] {
  max-width: 28em;
  overflow: hidden;
  color: var(--text);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.feature-row {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  gap: 64px;
  align-items: center;
  padding: 48px 0;
}

.section-head + .feature-row {
  padding-top: 0;
}

.feature-row + .feature-row {
  border-top: 1px solid var(--line);
}

.feature-row.reverse {
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
}

.feature-row.reverse .feature-text {
  order: 2;
}

.feature-text h3 {
  margin-bottom: 14px;
  font-size: clamp(22px, 2.2vw, 28px);
}

.feature-text p {
  font-size: 17px;
}

.more-features {
  margin-top: 16px;
  padding-top: 48px;
  border-top: 1px solid var(--line);
}

.more-features h3 {
  margin-bottom: 10px;
}

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

.start-list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.start-name {
  margin-bottom: 4px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
}

.start-list .btn {
  min-width: 116px;
}

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

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

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
  color: var(--ink);
  font-size: 17px;
  font-weight: 600;
  list-style: none;
  cursor: pointer;
}

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

.faq summary::after {
  content: "";
  flex-shrink: 0;
  width: 9px;
  height: 9px;
  margin-right: 4px;
  border-right: 2px solid var(--blue);
  border-bottom: 2px solid var(--blue);
  transform: translateY(-3px) rotate(45deg);
  transition: transform 0.2s;
}

.faq details[open] summary::after {
  transform: translateY(2px) rotate(-135deg);
}

.faq details p {
  padding: 0 40px 24px 0;
}

.offer {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 72px;
  align-items: start;
}

.offer-intro h2 {
  margin-bottom: 14px;
}

.offer-intro p {
  font-size: 17px;
}

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

.offer-detail div {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.offer-detail dt {
  color: var(--muted);
}

.offer-detail dd {
  margin: 0;
  color: var(--ink);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
  counter-reset: step;
  list-style: none;
}

.steps li {
  padding-top: 20px;
  border-top: 2px solid var(--ink);
  counter-increment: step;
}

.steps li::before {
  content: counter(step);
  display: block;
  margin-bottom: 10px;
  color: var(--blue);
  font-size: 15px;
  font-weight: 700;
}

.steps h3 {
  margin-bottom: 8px;
  font-size: 19px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 48px;
}

.contact-item {
  padding-top: 24px;
  border-top: 2px solid var(--ink);
}

.contact-label {
  margin-bottom: 8px;
  color: var(--muted);
}

.contact-value {
  display: block;
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 20px;
  font-weight: 600;
}

.contact-phone {
  color: var(--blue);
  font-size: clamp(28px, 3vw, 36px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.contact-qr {
  width: 160px;
  height: 160px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

/* 文章页 */

.article-head {
  padding: 36px 0 48px;
  border-bottom: 1px solid var(--line);
}

.article-head .post-meta {
  margin: 32px 0 16px;
}

.article-head h1 {
  max-width: 22em;
  margin-bottom: 18px;
  font-size: clamp(30px, 3.6vw, 44px);
  text-wrap: balance;
}

.article-head .lead {
  max-width: 40em;
  color: var(--muted);
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 720px) 240px;
  justify-content: space-between;
  gap: 64px;
  padding: 56px 0 96px;
}

.toc {
  position: sticky;
  top: 104px;
}

.toc-title {
  margin-bottom: 12px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
}

.toc ol {
  border-left: 1px solid var(--line);
  list-style: none;
}

.toc a {
  display: block;
  margin-left: -1px;
  padding: 6px 0 6px 16px;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.toc a:hover {
  border-left-color: var(--blue);
  color: var(--blue);
}

.toc .toc-l3 a {
  padding-left: 30px;
}

.prose {
  min-width: 0;
  color: #2f3f50;
  font-size: 17px;
  line-height: 1.9;
}

.prose > * + * {
  margin-top: 1.1em;
}

.prose h2 {
  margin-top: 2.4em;
  font-size: 26px;
  line-height: 1.4;
}

.prose h3 {
  margin-top: 1.8em;
  font-size: 20px;
}

.prose h2 + *,
.prose h3 + * {
  margin-top: 0.7em;
}

.prose a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.prose ul,
.prose ol {
  padding-left: 1.4em;
}

.prose li + li {
  margin-top: 0.45em;
}

.prose blockquote {
  margin-inline: 0;
  padding: 2px 0 2px 20px;
  border-left: 3px solid var(--green);
  color: var(--ink);
}

.prose code {
  padding: 0.1em 0.35em;
  border-radius: 4px;
  background: var(--mist);
  font-family: var(--mono);
  font-size: 0.88em;
}

.prose .code-block {
  padding: 18px 20px;
  overflow-x: auto;
  border-radius: 10px;
  background: var(--night);
  color: #dfe8f1;
  font-size: 14px;
  line-height: 1.7;
}

.prose .code-block code {
  padding: 0;
  background: none;
  color: inherit;
  font-size: inherit;
}

.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.table-scroll table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  line-height: 1.7;
}

.table-scroll th,
.table-scroll td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.table-scroll th {
  background: var(--mist);
  color: var(--ink);
  white-space: nowrap;
}

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

.key-points {
  padding: 22px 26px;
  border-radius: 10px;
  background: var(--blue-soft);
}

.key-points-title {
  margin-bottom: 8px;
  color: var(--blue-dark);
  font-size: 15px;
  font-weight: 700;
}

.key-points ul {
  padding-left: 1.2em;
}

.key-points li {
  color: var(--ink);
  font-size: 16px;
}

.prose .article-faq {
  margin-top: 3em;
}

.article-faq h2 {
  margin-bottom: 0.6em;
}

.prose .article-foot {
  margin-top: 3em;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.article-foot p + p {
  margin-top: 6px;
}

/* 404 */

.error-page {
  padding: 120px 0 140px;
}

.error-code {
  margin-bottom: 12px;
  color: var(--blue);
  font-weight: 700;
}

.error-page h1 {
  margin-bottom: 16px;
  font-size: clamp(32px, 4vw, 48px);
}

.error-page .lead {
  margin-bottom: 32px;
  color: var(--muted);
}

/* 页脚 */

.site-footer {
  padding: 64px 0 32px;
  border-top: 1px solid var(--line);
  font-size: 15px;
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(0, 2fr) repeat(3, minmax(0, 1fr));
  gap: 48px;
  padding-bottom: 40px;
}

.footer-brand img {
  width: auto;
  height: 44px;
  margin-bottom: 18px;
}

.footer-brand p {
  max-width: 26em;
  color: var(--muted);
}

.footer-col {
  display: grid;
  align-content: start;
  gap: 10px;
}

.footer-heading {
  margin-bottom: 4px;
  color: var(--ink);
  font-weight: 700;
}

.footer-col a:hover {
  color: var(--blue);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.footer-legal a:hover {
  color: var(--blue);
}

/* 响应式 */

@media (max-width: 1180px) {
  .brand-company {
    display: none;
  }

  .site-nav {
    gap: 24px;
  }
}

@media (max-width: 1000px) {
  .site-nav,
  .header-actions {
    display: none;
  }

  .mobile-menu {
    display: block;
  }

  .hero-grid,
  .band-grid,
  .split,
  .photo-split,
  .offer,
  .page-hero-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .photo-split .photo img {
    aspect-ratio: 4 / 3;
  }

  .feature-row,
  .feature-row.reverse {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .feature-row.reverse .feature-text {
    order: 0;
  }

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

  .article-aside {
    display: none;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 860px) {
  .columns-3,
  .columns-2 {
    grid-template-columns: minmax(0, 1fr);
    gap: 36px;
  }

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

  .gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .gallery .gallery-wide img {
    aspect-ratio: 4 / 3;
  }

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

  .series-list,
  .topic-head {
    grid-template-columns: minmax(0, 1fr);
  }

  .topic-head {
    gap: 6px;
  }

  .series-block {
    padding: 28px 22px;
  }

  .post-item .post-meta {
    grid-row: auto;
    flex-direction: row;
    margin-bottom: 8px;
    padding-top: 0;
  }
}

@media (max-width: 640px) {
  :root {
    --gutter: 20px;
  }

  body {
    font-size: 16px;
  }

  .header-bar {
    height: 64px;
  }

  .brand img {
    height: 34px;
  }

  .hero {
    padding-top: 48px;
  }

  .hero-shot {
    margin-top: 44px;
  }

  .hero-shot img {
    aspect-ratio: 4 / 3;
  }

  .section {
    padding: 64px 0;
  }

  .section-head {
    margin-bottom: 32px;
  }

  .section-head-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .lead {
    font-size: 17px;
  }

  .hero-actions .btn {
    flex: 1 1 auto;
  }

  .page-hero {
    padding-bottom: 48px;
  }

  .page-hero h1 {
    margin-top: 24px;
  }

  .facts div,
  .offer-detail div {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }

  .start-list li {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .start-list .btn {
    justify-self: start;
  }

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

  .cta-band {
    padding: 56px 0;
  }

  .cta-contact {
    justify-items: start;
  }

  .article-head .post-meta {
    margin-top: 24px;
  }

  .article-layout {
    padding: 40px 0 72px;
  }

  .prose {
    font-size: 16.5px;
  }

  .prose h2 {
    font-size: 23px;
  }

  .key-points {
    padding: 18px 20px;
  }

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

  .series-next {
    grid-column: auto;
    text-align: left;
  }

  .faq details p {
    padding-right: 0;
  }

  .footer-main {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}