/* ============================================================
   官网前台样式 V1.4（极简科技风）
   主题色来自后台：--site-primary / --site-secondary
   ============================================================ */

:root {
  --site-primary: #2563eb;
  --site-secondary: #00c2a8;
  --site-indigo: #6d5df6;
  --site-accent: #ff7a3d;
  --site-ink: #0b1220;
  --site-ink-soft: #26334a;
  --site-muted: #5a6b85;
  --site-line: #e4e9f1;
  --site-bg: #ffffff;
  --site-bg-soft: #f6f8fb;
  --site-radius: 8px;
  --site-shadow: 0 24px 60px rgba(11, 18, 32, 0.08);
  --site-shadow-sm: 0 8px 26px rgba(11, 18, 32, 0.06);
  --site-grad: linear-gradient(135deg, var(--site-primary), var(--site-secondary));
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--site-ink);
  background: var(--site-bg);
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

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

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

.site-main {
  min-height: 62vh;
}

.site-container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 32px;
}

.site-container-narrow {
  max-width: 860px;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.97);
  border-bottom-color: var(--site-line);
  box-shadow: 0 8px 30px rgba(11, 18, 32, 0.06);
}

.site-header-inner {
  position: relative;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 32px;
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.site-brand-mark {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  border-radius: 8px;
  background: var(--site-grad);
  color: #fff;
  font-size: 17px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

.site-brand-logo {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: 6px;
}

.site-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  min-width: 0;
}

.site-brand-text strong {
  font-size: 17px;
  font-weight: 800;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-brand-text small {
  font-size: 10px;
  color: var(--site-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav-link {
  position: relative;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--site-ink-soft);
  border-radius: 6px;
}

.site-nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background: var(--site-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}

.site-nav-link:hover::after,
.site-nav-link.active::after {
  transform: scaleX(1);
}

.site-nav-link:hover,
.site-nav-link.active {
  color: var(--site-primary);
}

.site-nav-cta {
  margin-left: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: var(--site-primary);
  border-radius: 6px;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.22);
  white-space: nowrap;
  transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.18s ease;
}

.site-nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.3);
  filter: brightness(0.96);
}

.site-menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 10px;
  border: 1px solid var(--site-line);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}

.site-menu-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--site-ink);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  border: 1px solid transparent;
  border-radius: var(--site-radius);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease, filter 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-lg {
  padding: 17px 30px;
  font-size: 16px;
}

.btn-primary {
  color: #fff;
  background: var(--site-primary);
  box-shadow: 0 10px 26px rgba(37, 99, 235, 0.22);
}

.btn-primary:hover {
  box-shadow: 0 14px 32px rgba(37, 99, 235, 0.28);
  filter: brightness(0.96);
}

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

.btn-ghost:hover {
  color: var(--site-primary);
  border-color: var(--site-primary);
}

.btn-light {
  color: var(--site-ink);
  background: #fff;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.22);
}

.btn-light:hover {
  background: #f6f8fb;
}

.arrow {
  transition: transform 0.22s ease;
}

.btn:hover .arrow,
.text-link:hover .arrow {
  transform: translateX(4px);
}

/* ---------- Hero ---------- */
.site-hero {
  position: relative;
  overflow: hidden;
  background: var(--site-bg);
}

.site-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.site-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.08;
}

.site-hero-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.96) 0%, rgba(255, 255, 255, 0.82) 52%, rgba(246, 248, 251, 0.5) 100%);
}

.site-hero-inner {
  position: relative;
  z-index: 1;
  padding-top: 92px;
}

.site-hero-grid {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: 72px;
  align-items: center;
  padding-bottom: 88px;
}

.site-hero-copy > * {
  animation: site-rise 0.7s ease both;
}

.site-hero-copy > *:nth-child(2) {
  animation-delay: 0.08s;
}

.site-hero-copy > *:nth-child(3) {
  animation-delay: 0.16s;
}

.site-hero-copy > *:nth-child(4) {
  animation-delay: 0.24s;
}

@keyframes site-rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.site-eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 26px;
  font-size: 13px;
  font-weight: 700;
  color: var(--site-primary);
}

.site-eyebrow::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--site-grad);
}

.site-hero-title {
  max-width: 720px;
  margin: 0;
  font-size: 62px;
  line-height: 1.1;
  font-weight: 800;
}

.site-hero-subtitle {
  max-width: 560px;
  margin: 28px 0 0;
  font-size: 17px;
  line-height: 1.9;
  color: var(--site-muted);
}

.site-hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 40px;
}

.site-hero-note {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 30px 0 0;
  font-size: 13px;
  color: var(--site-muted);
}

.site-hero-dot {
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  border-radius: 50%;
  background: var(--site-accent);
}

.site-hero-visual {
  position: relative;
}

.visual-panel {
  background: #fff;
  border: 1px solid var(--site-line);
  border-radius: var(--site-radius);
  box-shadow: var(--site-shadow);
  overflow: hidden;
}

.visual-panel::before {
  content: "";
  display: block;
  height: 3px;
  background: var(--site-grad);
}

.visual-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--site-line);
  font-size: 14px;
  font-weight: 700;
}

.visual-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  font-weight: 600;
  color: var(--site-primary);
}

.visual-status::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--site-primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.visual-body {
  padding: 8px 24px;
}

.visual-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  padding: 17px 0;
  border-bottom: 1px solid var(--site-line);
}

.visual-row:last-child {
  border-bottom: 0;
}

.visual-row span {
  flex: 0 0 auto;
  font-size: 13px;
  color: var(--site-muted);
}

.visual-row b {
  min-width: 0;
  font-size: 15px;
  font-weight: 700;
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.visual-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  padding: 16px 24px;
  background: var(--site-bg-soft);
  border-top: 1px solid var(--site-line);
  font-size: 12px;
  color: var(--site-muted);
}

.visual-foot span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.visual-foot span::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--site-primary);
}

.visual-caption {
  margin-top: 18px;
  font-size: 13px;
  color: var(--site-muted);
  text-align: center;
}

.site-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--site-line);
  border-bottom: 1px solid var(--site-line);
}

.site-stat {
  padding: 30px 24px 30px 0;
}

.site-stat b {
  display: block;
  font-size: 34px;
  line-height: 1.1;
  font-weight: 800;
}

.site-stat span {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--site-muted);
}

/* ---------- 通用板块 ---------- */
.site-section {
  padding: 118px 0;
}

.site-section-alt {
  background: var(--site-bg-soft);
}

.site-section-ink {
  position: relative;
  background: var(--site-ink);
  color: #fff;
}

.site-section-ink::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--site-grad);
}

.section-index {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 22px;
  font-size: 13px;
  font-weight: 700;
  color: var(--site-primary);
}

.section-index::after {
  content: "";
  width: 42px;
  height: 1px;
  background: currentColor;
  opacity: 0.4;
}

.section-index.light {
  color: #8ea5ff;
}

.section-head h2 {
  max-width: 720px;
  margin: 0;
  font-size: 42px;
  line-height: 1.18;
  font-weight: 800;
}

.section-desc {
  max-width: 560px;
  margin: 22px 0 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--site-muted);
}

.section-head-center {
  margin: 0 auto 56px;
  text-align: center;
}

.section-head-center h2,
.section-head-center .section-desc {
  margin-left: auto;
  margin-right: auto;
}

.section-head-center .section-index {
  justify-content: center;
}

.section-head-left {
  margin-bottom: 0;
}

.section-head.light h2 {
  color: #fff;
}

.section-head.light .section-desc {
  color: rgba(255, 255, 255, 0.66);
}

.section-row-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 56px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--site-primary);
  white-space: nowrap;
}

.section-more {
  margin-top: 42px;
  text-align: center;
}

/* ---------- 服务列表 ---------- */
.service-list {
  margin-top: 58px;
}

.service-row {
  display: grid;
  grid-template-columns: 76px 132px 1fr auto;
  align-items: center;
  gap: 26px;
  padding: 36px 12px;
  border-top: 1px solid var(--site-line);
  transition: background 0.25s ease, transform 0.25s ease;
}

.service-list .service-row:last-child {
  border-bottom: 1px solid var(--site-line);
}

.service-num {
  font-size: 15px;
  font-weight: 800;
  color: var(--site-primary);
}

.service-thumb {
  position: relative;
  width: 132px;
  height: 88px;
  flex: 0 0 132px;
  border-radius: 6px;
  overflow: hidden;
  background: var(--site-bg-soft);
  border: 1px solid var(--site-line);
}

.service-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.service-thumb-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  background: var(--site-grad);
}

.service-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.service-cat {
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--site-primary);
}

.service-main strong {
  font-size: 24px;
  line-height: 1.3;
  font-weight: 800;
  transition: color 0.22s ease;
}

.service-desc {
  margin-top: 8px;
  max-width: 620px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--site-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.service-meta-text {
  max-width: 320px;
  font-size: 13px;
  color: var(--site-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.row-arrow {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--site-line);
  border-radius: 50%;
  font-size: 18px;
  transition: background 0.22s ease, color 0.22s ease, border-color 0.22s ease, transform 0.22s ease;
}

.service-row:hover {
  background: #fafbff;
}

.service-row:hover .service-main strong {
  color: var(--site-primary);
}

.service-row:hover .row-arrow {
  background: var(--site-primary);
  border-color: var(--site-primary);
  color: #fff;
  transform: translateX(3px);
}

/* ---------- 行业方案 ---------- */
.site-split {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 88px;
}

.site-split-left {
  position: sticky;
  top: 110px;
  align-self: start;
}

.site-split-left .text-link {
  margin-top: 34px;
}

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

.solution-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 30px;
  align-items: center;
  padding: 30px 8px;
  border-bottom: 1px solid var(--site-line);
  transition: background 0.22s ease;
}

.solution-row:hover {
  background: #fff;
}

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

.sol-tag {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--site-primary);
}

.solution-main h3 {
  font-size: 21px;
  line-height: 1.4;
  font-weight: 800;
  transition: color 0.2s ease;
}

.solution-main p {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--site-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.sol-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

.sol-tags {
  max-width: 260px;
  font-size: 12px;
  color: var(--site-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sol-arrow {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--site-line);
  border-radius: 50%;
  font-size: 18px;
  transition: background 0.22s ease, color 0.22s ease, border-color 0.22s ease, transform 0.22s ease;
}

.solution-row:hover .solution-main h3 {
  color: var(--site-primary);
}

.solution-row:hover .sol-arrow {
  background: var(--site-primary);
  border-color: var(--site-primary);
  color: #fff;
  transform: translateX(3px);
}

/* ---------- 真实案例 ---------- */
.cases-grid {
  display: grid;
  grid-template-columns: 1.14fr 0.86fr;
  grid-template-rows: auto auto;
  gap: 26px;
}

.case {
  display: block;
}

.case.featured {
  grid-row: 1 / 3;
}

.case-cover {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 26px;
  border-radius: var(--site-radius);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.case.featured .case-cover {
  aspect-ratio: 4 / 3;
}

.case:not(.featured) .case-cover {
  aspect-ratio: 16 / 9;
}

.case-cover img {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.02) 34%, rgba(15, 23, 42, 0.62) 100%);
  pointer-events: none;
}

.cover-1 {
  background: linear-gradient(135deg, #e9f1ff 0%, #f3efff 100%);
}

.cover-2 {
  background: linear-gradient(135deg, #edf4ff 0%, #e2ecff 100%);
}

.cover-3 {
  background: linear-gradient(135deg, #f0f4ff 0%, #e9eeff 100%);
}

.cover-num,
.cover-tag,
.cover-word {
  position: relative;
  z-index: 1;
}

.cover-tag {
  align-self: flex-start;
  margin-bottom: 18px;
  padding: 5px 10px;
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  color: var(--site-primary);
  background: rgba(255, 255, 255, 0.92);
}

.cover-word {
  max-width: 82%;
  color: #fff;
  font-size: 36px;
  line-height: 1.12;
  font-weight: 800;
  text-shadow: 0 1px 14px rgba(15, 23, 42, 0.3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cover-num {
  position: absolute;
  top: -18px;
  right: 14px;
  font-size: 150px;
  line-height: 1;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.16);
  pointer-events: none;
}

.case:hover .case-cover {
  transform: translateY(-4px);
  box-shadow: var(--site-shadow);
}

.case-info {
  padding: 22px 4px 0;
}

.case-info h3 {
  font-size: 20px;
  line-height: 1.45;
  font-weight: 800;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s ease;
}

.case-info p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--site-muted);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.case-meta span {
  padding: 4px 10px;
  border: 1px solid var(--site-line);
  border-radius: 999px;
  font-size: 12px;
  color: var(--site-muted);
}

.case.featured .case-info {
  padding-top: 26px;
}

.case.featured .case-info h3 {
  font-size: 24px;
}

.case:hover .case-info h3 {
  color: var(--site-primary);
}

.cases-grid-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-template-rows: none;
}

.cases-grid-list .case-cover {
  aspect-ratio: 16 / 11;
}

.cases-grid-list .case {
  grid-row: auto;
}

/* ---------- 资质与来源 ---------- */
.credential-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}

.credential-item {
  padding: 30px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.credential-num {
  display: block;
  margin-bottom: 16px;
  font-size: 13px;
  font-weight: 700;
  color: #8ea5ff;
}

.credential-item strong {
  display: block;
  font-size: 20px;
  font-weight: 800;
}

.credential-item p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.66);
}

.credential-img {
  max-height: 46px;
  margin-top: 18px;
  object-fit: contain;
  filter: grayscale(1) brightness(1.7);
  opacity: 0.9;
}

.source-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 28px;
  margin-top: 60px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.source-item img {
  max-height: 34px;
  max-width: 120px;
  object-fit: contain;
  filter: grayscale(1) brightness(1.7);
  opacity: 0.85;
}

.source-item span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

.source-item:hover img,
.source-item:hover span {
  opacity: 1;
}

/* ---------- 文章列表 ---------- */
.article-list {
  border-top: 1px solid var(--site-line);
  margin-top: 8px;
}

.article-row {
  display: grid;
  grid-template-columns: 96px 110px 150px 1fr 44px;
  gap: 24px;
  align-items: center;
  padding: 30px 8px;
  border-bottom: 1px solid var(--site-line);
  transition: background 0.22s ease;
}

.article-row:hover {
  background: #fff;
}

.art-thumb {
  position: relative;
  width: 96px;
  height: 64px;
  border-radius: 6px;
  overflow: hidden;
  background: var(--site-bg-soft);
  border: 1px solid var(--site-line);
}

.art-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.art-thumb-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  background: var(--site-grad);
}

.art-date {
  font-size: 13px;
  color: var(--site-muted);
  font-variant-numeric: tabular-nums;
}

.art-cat {
  font-size: 13px;
  font-weight: 700;
  color: var(--site-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.art-title {
  min-width: 0;
  font-size: 19px;
  line-height: 1.5;
  font-weight: 800;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s ease;
}

.article-row:hover .art-title {
  color: var(--site-primary);
}

.article-row .row-arrow {
  width: 38px;
  height: 38px;
  flex-basis: 38px;
  font-size: 16px;
}

.article-row:hover .row-arrow {
  background: var(--site-primary);
  border-color: var(--site-primary);
  color: #fff;
  transform: translateX(3px);
}

/* ---------- FAQ ---------- */
.faq-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 88px;
}

.faq-left {
  position: sticky;
  top: 110px;
  align-self: start;
}

.faq-left .btn {
  margin-top: 34px;
}

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

.faq-single {
  max-width: 860px;
  margin: 0 auto;
}

.site-faq-list {
  display: flex;
  flex-direction: column;
}

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

.site-faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 26px 4px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
  transition: color 0.2s ease;
}

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

.site-faq-item summary::after {
  content: "+";
  flex: 0 0 32px;
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--site-line);
  border-radius: 50%;
  font-size: 18px;
  font-weight: 500;
  color: var(--site-primary);
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.site-faq-item[open] summary::after {
  transform: rotate(45deg);
  color: #fff;
  border-color: var(--site-primary);
  background: var(--site-primary);
}

.site-faq-item summary:hover {
  color: var(--site-primary);
}

.site-faq-answer {
  max-width: 640px;
  padding: 0 4px 28px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--site-muted);
}

.site-faq-answer p {
  margin: 0 0 10px;
}

/* ---------- CTA ---------- */
.site-cta {
  position: relative;
  padding: 126px 0;
  background: var(--site-ink);
  color: #fff;
  overflow: hidden;
}

.site-cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--site-grad);
}

.site-cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.site-cta-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 24px;
  font-size: 13px;
  font-weight: 700;
  color: #8ea5ff;
}

.site-cta-eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--site-grad);
}

.site-cta h2 {
  margin: 0 auto;
  max-width: 760px;
  font-size: 48px;
  line-height: 1.16;
  font-weight: 800;
}

.site-cta p {
  margin: 22px auto 0;
  max-width: 520px;
  font-size: 16px;
  color: rgba(255, 255, 255, 0.62);
}

.site-cta-actions {
  margin-top: 40px;
}

/* ---------- 列表页横幅 ---------- */
.page-band {
  padding: 76px 0 64px;
  background: linear-gradient(180deg, var(--site-bg-soft) 0%, var(--site-bg) 100%);
  border-bottom: 1px solid var(--site-line);
}

.page-band h1 {
  margin: 0;
  font-size: 44px;
  line-height: 1.24;
  font-weight: 800;
}

.page-band > .site-container > p:not(.site-eyebrow) {
  margin: 18px 0 0;
  max-width: 720px;
  font-size: 16px;
  color: var(--site-muted);
}

.page-band-detail {
  padding-top: 52px;
}

.page-band-sub {
  margin-top: 18px !important;
  font-size: 17px !important;
}

.site-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 13px;
  color: var(--site-muted);
}

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

.site-article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 22px;
  font-size: 13px;
  color: var(--site-muted);
}

.site-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 30px 0 0;
}

.site-filter {
  padding: 8px 18px;
  border: 1px solid var(--site-line);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--site-muted);
  background: #fff;
  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.site-filter:hover,
.site-filter.active {
  color: #fff;
  border-color: var(--site-primary);
  background: var(--site-primary);
}

.site-empty {
  padding: 64px 24px;
  text-align: center;
  color: var(--site-muted);
  border: 1px dashed var(--site-line);
  border-radius: var(--site-radius);
  background: #fff;
}

.site-empty strong {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
  color: var(--site-ink);
}

/* ---------- 详情页 ---------- */
.site-cover {
  margin: 0 0 42px;
  border-radius: var(--site-radius);
  overflow: hidden;
  box-shadow: var(--site-shadow);
}

.site-cover img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.site-article h1,
.site-article h2,
.site-article h3,
.site-article h4 {
  margin: 34px 0 14px;
  line-height: 1.4;
  font-weight: 800;
}

.site-article h2 {
  font-size: 28px;
}

.site-article h3 {
  font-size: 22px;
}

.site-article p {
  margin: 0 0 18px;
  line-height: 1.95;
}

.site-article ul,
.site-article ol {
  margin: 0 0 18px;
  padding-left: 24px;
}

.site-article li {
  margin-bottom: 8px;
  line-height: 1.9;
}

.site-article code {
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
  background: #eef2f7;
}

.site-article blockquote {
  margin: 0 0 18px;
  padding: 16px 20px;
  border-left: 4px solid var(--site-primary);
  background: var(--site-bg-soft);
  border-radius: 0 6px 6px 0;
}

.site-article img {
  border-radius: var(--site-radius);
}

.site-article-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 42px;
  padding-top: 32px;
  border-top: 1px solid var(--site-line);
}

/* ---------- 联系页 ---------- */
.site-contact-grid {
  display: grid;
  grid-template-columns: minmax(280px, 380px) 1fr;
  gap: 48px;
  align-items: start;
}

.site-contact-info h2 {
  margin: 0 0 22px;
  font-size: 24px;
  font-weight: 800;
}

.site-contact-list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  border-top: 1px solid var(--site-line);
}

.site-contact-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 0;
  border-bottom: 1px solid var(--site-line);
}

.site-contact-list span {
  flex: 0 0 52px;
  font-size: 13px;
  color: var(--site-muted);
}

.site-contact-list strong {
  font-size: 15px;
  word-break: break-all;
}

.site-contact-tip {
  margin: 0;
  font-size: 14px;
  color: var(--site-muted);
}

.site-form-card {
  padding: 36px;
  background: #fff;
  border: 1px solid var(--site-line);
  border-radius: var(--site-radius);
  box-shadow: var(--site-shadow);
}

.site-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.site-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.site-form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.site-form-field label {
  font-size: 14px;
  font-weight: 700;
}

.site-input,
.site-textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--site-line);
  border-radius: 6px;
  font-size: 15px;
  font-family: inherit;
  color: var(--site-ink);
  background: #fff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.site-input:focus,
.site-textarea:focus {
  outline: none;
  border-color: var(--site-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.13);
}

.site-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.7;
}

.site-form-honey {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.site-form-submit {
  align-self: flex-start;
  min-width: 160px;
}

.site-form-success,
.site-form-error {
  margin-bottom: 20px;
  padding: 22px;
  border-radius: var(--site-radius);
}

.site-form-success {
  background: #e8f8f3;
  border: 1px solid #b8e6d6;
}

.site-form-error {
  background: #fdeeee;
  border: 1px solid #f3c2c2;
}

.site-form-success strong,
.site-form-error strong {
  display: block;
  margin-bottom: 8px;
}

.site-form-success p,
.site-form-error p {
  margin: 0 0 14px;
  font-size: 14px;
}

.site-form-success .btn {
  margin-top: 6px;
}

/* ---------- 页脚 ---------- */
.site-footer {
  background: #fff;
  border-top: 1px solid var(--site-line);
  color: var(--site-muted);
}

.site-footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 64px 32px 48px;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.1fr;
  gap: 44px;
}

.site-footer-brand strong {
  display: block;
  margin-bottom: 12px;
  font-size: 21px;
  color: var(--site-ink);
}

.site-footer-brand p {
  margin: 0 0 10px;
  font-size: 14px;
  max-width: 320px;
}

.site-footer-col h4 {
  margin: 0 0 18px;
  font-size: 14px;
  font-weight: 800;
  color: var(--site-ink);
}

.site-footer-nav {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.site-footer-nav a {
  font-size: 14px;
  color: var(--site-muted);
  transition: color 0.15s ease, padding-left 0.15s ease;
}

.site-footer-nav a:hover {
  color: var(--site-primary);
  padding-left: 3px;
}

.site-footer-col p {
  margin: 0 0 10px;
  font-size: 14px;
  word-break: break-all;
}

.site-footer-bottom {
  max-width: 1180px;
  margin: 0 auto;
  padding: 22px 32px;
  border-top: 1px solid var(--site-line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
}

.site-footer-bottom a:hover {
  color: var(--site-primary);
}

.site-error {
  padding: 30px 0 10px;
  text-align: center;
}

.site-error h1 {
  font-size: 40px;
}

.site-error .site-eyebrow,
.site-error .site-hero-actions {
  justify-content: center;
}

.site-error .site-hero-actions {
  margin-top: 26px;
}

.site-error-links .service-row {
  cursor: pointer;
}

/* ---------- 滚动显现 ---------- */
.site-js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.site-js .reveal.in {
  opacity: 1;
  transform: none;
}

/* ---------- 无障碍动画 ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .site-hero-copy > *,
  .service-row,
  .solution-row,
  .case,
  .article-row,
  .site-faq-item,
  .btn,
  .site-nav-cta {
    animation: none !important;
    transition: none !important;
  }

  .site-js .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- 平板 ---------- */
@media (max-width: 960px) {
  .site-container,
  .site-header-inner {
    padding-left: 24px;
    padding-right: 24px;
  }

  .site-hero {
    padding-top: 0;
  }

  .site-hero-inner {
    padding-top: 64px;
  }

  .site-hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    padding-bottom: 56px;
  }

  .site-hero-visual {
    max-width: 560px;
  }

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

  .site-stat {
    padding: 24px 20px 24px 0;
  }

  .site-section {
    padding: 90px 0;
  }

  .service-row {
    grid-template-columns: 56px 112px 1fr;
    gap: 16px;
  }

  .service-thumb {
    width: 112px;
    height: 74px;
    flex-basis: 112px;
  }

  .service-meta {
    grid-column: 2 / 4;
    justify-content: space-between;
  }

  .site-split {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .site-split-left {
    position: static;
  }

  .cases-grid {
    grid-template-columns: 1fr;
    grid-template-rows: none;
  }

  .case.featured {
    grid-row: auto;
  }

  .case.featured .case-cover {
    aspect-ratio: 16 / 10;
  }

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

  .article-row {
    grid-template-columns: 84px 90px 120px 1fr 40px;
    gap: 14px;
  }

  .art-thumb {
    width: 84px;
    height: 56px;
  }

  .faq-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .faq-left {
    position: static;
  }

  .credential-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .site-footer-inner {
    grid-template-columns: 1fr 1fr;
    padding: 56px 24px 40px;
  }
}

/* ---------- 手机 ---------- */
@media (max-width: 760px) {
  .site-header-inner {
    min-height: 64px;
  }

  .site-menu-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 14px 16px 20px;
    background: #fff;
    border-bottom: 1px solid var(--site-line);
    box-shadow: 0 18px 34px rgba(11, 18, 32, 0.12);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav-link {
    padding: 12px 14px;
  }

  .site-nav-link::after {
    display: none;
  }

  .site-nav-cta {
    margin: 8px 0 0;
    text-align: center;
  }

  .site-hero-inner {
    padding-top: 48px;
  }

  .site-hero-title {
    font-size: 40px;
  }

  .site-hero-subtitle {
    margin-top: 20px;
    font-size: 15px;
  }

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

  .site-section {
    padding: 72px 0;
  }

  .section-head h2 {
    font-size: 32px;
  }

  .section-row-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 40px;
  }

  .service-row {
    grid-template-columns: 52px 96px 1fr;
    gap: 10px 14px;
    padding: 26px 0;
  }

  .service-num {
    grid-column: 1;
    grid-row: 1;
    font-size: 13px;
  }

  .service-thumb {
    grid-column: 2;
    grid-row: 1;
    width: 96px;
    height: 64px;
    flex-basis: 96px;
  }

  .service-main {
    grid-column: 1 / 4;
    grid-row: 2;
  }

  .service-main strong {
    font-size: 21px;
  }

  .service-meta {
    grid-column: 1 / 4;
    grid-row: 3;
    flex-wrap: wrap;
    gap: 10px;
  }

  .service-meta-text {
    max-width: 70%;
  }

  .solution-row {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .sol-meta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    width: 100%;
  }

  .sol-tags {
    max-width: 75%;
  }

  .article-row {
    grid-template-columns: 96px 1fr 40px;
    gap: 8px 12px;
  }

  .art-thumb {
    grid-column: 1;
    grid-row: 1 / 4;
  }

  .art-date {
    grid-column: 2;
    grid-row: 1;
  }

  .art-cat {
    grid-column: 2;
    grid-row: 2;
  }

  .art-title {
    grid-column: 2 / 4;
    grid-row: 3;
    font-size: 17px;
  }

  .article-row .row-arrow {
    grid-column: 3;
    grid-row: 1;
  }

  .case-cover {
    padding: 20px;
  }

  .cover-num {
    top: -6px;
    right: 8px;
    font-size: 88px;
  }

  .cover-tag {
    margin-bottom: 14px;
  }

  .cover-word {
    font-size: 26px;
  }

  .credential-list {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .site-faq-item summary {
    font-size: 16px;
  }

  .site-cta {
    padding: 92px 0;
  }

  .site-cta h2 {
    font-size: 32px;
  }

  .page-band {
    padding: 52px 0 44px;
  }

  .page-band h1 {
    font-size: 32px;
  }

  .site-cover img {
    aspect-ratio: 16 / 10;
  }

  .site-contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .site-form-card {
    padding: 24px 20px;
  }

  .site-footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 24px 36px;
  }
}

@media (max-width: 640px) {
  .site-container,
  .site-header-inner {
    padding-left: 20px;
    padding-right: 20px;
  }

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

  .site-stat b {
    font-size: 28px;
  }

  .site-stat span {
    font-size: 12px;
  }

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

  .site-footer-bottom {
    padding-left: 20px;
    padding-right: 20px;
    flex-direction: column;
    align-items: flex-start;
  }
}