:root {
  --bg: #f5f5f7;
  --surface: #ffffff;
  --surface-soft: #fbfbfd;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --muted-strong: #4f5356;
  --line: rgba(0, 0, 0, 0.08);
  --line-strong: rgba(0, 0, 0, 0.12);
  --green: #08b86f;
  --green-dark: #08784d;
  --green-soft: rgba(8, 184, 111, 0.1);
  --shadow: 0 18px 55px rgba(0, 0, 0, 0.06);
  --shadow-soft: 0 10px 32px rgba(0, 0, 0, 0.045);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 72% 22%, rgba(8, 184, 111, 0.08), transparent 34%),
    linear-gradient(180deg, #fbfbfd 0%, var(--bg) 42%, #ffffff 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--green);
  color: #ffffff;
}

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

.container {
  width: min(100% - 48px, 1180px);
  margin: 0 auto;
}

/* 顶部导航：降低高度和视觉重量，保留企业官网的清爽感。 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(251, 251, 253, 0.86);
  backdrop-filter: saturate(180%) blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 12px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 13px;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.08);
}

.brand b,
.brand small {
  display: block;
}

.brand b {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand small {
  margin-top: 1px;
  color: rgba(29, 29, 31, 0.42);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

nav {
  display: flex;
  align-items: center;
  gap: 32px;
  color: rgba(29, 29, 31, 0.68);
  font-size: 14px;
  font-weight: 700;
}

nav a,
.lang {
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

nav a:hover,
.lang:hover {
  color: var(--green-dark);
}

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

.lang {
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.62);
  padding: 9px 15px;
  font-size: 14px;
  font-weight: 800;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 12px 21px;
  font-size: 14px;
  font-weight: 800;
  line-height: 1;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-dark {
  background: var(--text);
  color: #ffffff;
}

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

.btn-green {
  background: var(--green);
  box-shadow: 0 14px 34px rgba(8, 184, 111, 0.22);
  color: #ffffff;
}

.btn-green:hover {
  background: var(--green-dark);
  box-shadow: 0 16px 38px rgba(8, 120, 77, 0.22);
}

.btn-outline {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.72);
}

.btn-outline:hover {
  border-color: rgba(8, 184, 111, 0.36);
  color: var(--green-dark);
}

/* 首屏：控制中文标题字号和行高，避免过度压缩。 */
.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-glow {
  position: absolute;
  top: 130px;
  right: 10%;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: rgba(8, 184, 111, 0.1);
  filter: blur(70px);
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(410px, 0.88fr);
  align-items: center;
  gap: 54px;
  min-height: calc(100vh - 88px);
  padding: 72px 0 62px;
}

.eyebrow,
.section-intro > p {
  display: inline-flex;
  margin: 0 0 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 8px 26px rgba(0, 0, 0, 0.035);
  padding: 8px 13px;
  color: var(--green-dark);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 690px;
  margin-bottom: 24px;
  font-size: clamp(42px, 5.1vw, 66px);
  line-height: 1.12;
  font-weight: 780;
  letter-spacing: -0.045em;
}

.hero-desc {
  max-width: 640px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.78;
  letter-spacing: -0.01em;
}

.hero-actions,
.proof-list,
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
}

.hero-actions {
  margin-top: 34px;
}

.proof-list {
  margin-top: 28px;
}

.tag {
  border: 1px solid rgba(0, 0, 0, 0.05);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.035);
  padding: 8px 12px;
  color: var(--muted-strong);
  font-size: 13px;
  font-weight: 700;
}

/* 交付能力面板：替代原来的黑色大块，改为浅色玻璃卡片。 */
.capability-panel {
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow);
  padding: 26px;
  backdrop-filter: blur(24px);
}

.capability-heading {
  max-width: 500px;
  padding: 4px 4px 20px;
}

.capability-heading span {
  display: inline-flex;
  color: var(--green-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.capability-heading h2 {
  margin: 12px 0 10px;
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1.12;
  font-weight: 760;
  letter-spacing: -0.04em;
}

.capability-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

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

.capability-card {
  min-height: 188px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: linear-gradient(180deg, #ffffff 0%, #f7f7f9 100%);
  padding: 18px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.capability-card:hover {
  border-color: rgba(8, 184, 111, 0.28);
  box-shadow: var(--shadow-soft);
  transform: translateY(-2px);
}

.capability-card span {
  display: inline-flex;
  color: var(--green-dark);
  font-size: 12px;
  font-weight: 800;
}

.capability-card h3 {
  margin: 16px 0 10px;
  font-size: 18px;
  line-height: 1.28;
  font-weight: 760;
  letter-spacing: -0.025em;
}

.capability-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  padding: 22px 0 10px;
}

.stat {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.68);
  padding: 20px 22px;
}

.stat b,
.stat span {
  display: block;
}

.stat b {
  color: var(--text);
  font-size: 24px;
  font-weight: 760;
  letter-spacing: -0.035em;
}

.stat span {
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

.section-intro {
  padding: 82px 0 30px;
}

.section-intro.compact {
  padding-bottom: 24px;
}

.section-intro h2,
.dark-band h2,
.about-grid h2,
.contact-section h2 {
  max-width: 780px;
  margin-bottom: 0;
  font-size: clamp(34px, 4.4vw, 54px);
  line-height: 1.08;
  font-weight: 760;
  letter-spacing: -0.05em;
}

.section-intro span {
  display: block;
  max-width: 760px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding-bottom: 76px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.035);
  padding: 28px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  border-color: rgba(8, 184, 111, 0.22);
  box-shadow: var(--shadow-soft);
  transform: translateY(-3px);
}

.card h3 {
  margin-bottom: 14px;
  font-size: 23px;
  line-height: 1.22;
  font-weight: 760;
  letter-spacing: -0.035em;
}

.card p {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.service-card .tag {
  background: var(--green-soft);
  box-shadow: none;
  color: var(--green-dark);
}

/* 场景区沿用原类名，但视觉改为浅色分区，降低页面重量。 */
.dark-band {
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  color: var(--text);
  padding: 78px 0;
}

.dark-band h2 {
  color: var(--text);
}

.dark-band ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.dark-band li {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface-soft);
  padding: 18px 20px;
  color: var(--muted-strong);
  font-size: 15px;
  font-weight: 650;
  line-height: 1.7;
}

.dark-band li::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 12px;
  border-radius: 50%;
  background: var(--green);
  vertical-align: 1px;
}

.case-tag {
  display: inline-flex;
  border-radius: 999px;
  background: var(--green-soft);
  padding: 7px 11px;
  color: var(--green-dark);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.case-card h3 {
  margin-top: 22px;
}

.case-card strong {
  display: block;
  margin-top: 22px;
  border-radius: 16px;
  background: var(--bg);
  padding: 15px;
  color: var(--muted-strong);
  font-size: 14px;
  line-height: 1.65;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 13px;
  padding-bottom: 82px;
}

.step-card {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.78);
  padding: 22px;
}

.step-card h3 {
  color: var(--green-dark);
  font-size: 18px;
  font-weight: 760;
  letter-spacing: -0.025em;
}

.step-card p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.72;
}

.about-grid {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 54px;
  padding: 82px 0;
}

.about-grid > div > p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.82;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 13px;
  margin-top: 28px;
}

.faq-card {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.76);
  padding: 18px;
}

.faq-card h3 {
  font-size: 15px;
  line-height: 1.45;
  font-weight: 760;
}

.faq-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.72;
}

.contact-section {
  display: grid;
  grid-template-columns: 1fr 0.72fr;
  gap: 42px;
  border: 1px solid rgba(8, 184, 111, 0.16);
  border-radius: 34px;
  background:
    radial-gradient(circle at 82% 18%, rgba(255, 255, 255, 0.36), transparent 30%),
    linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
  margin-bottom: 76px;
  padding: 52px;
  color: #ffffff;
}

.contact-copy p {
  max-width: 690px;
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 17px;
  line-height: 1.78;
}

.contact-mail {
  margin-top: 24px;
  background: #ffffff;
  color: var(--green-dark);
}

.contact-card {
  align-self: stretch;
  border: 1px solid rgba(255, 255, 255, 0.62);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.9);
  padding: 26px;
  color: var(--text);
}

.contact-card div {
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
}

.contact-card div:first-child {
  padding-top: 0;
}

.contact-card div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.contact-card > div > span {
  display: block;
  color: rgba(29, 29, 31, 0.42);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.contact-card > div > strong {
  display: block;
  margin-top: 9px;
  font-size: 15px;
  line-height: 1.45;
}

/* 联系区二维码只保留扫码信息，不展示微信头像和昵称。 */
.wechat-card {
  margin: 22px 0 0;
  border-radius: 20px;
  background: #ffffff;
  padding: 16px;
  text-align: center;
}

.wechat-card img {
  display: block;
  width: min(100%, 220px);
  height: auto;
  margin: 0 auto;
  border-radius: 14px;
}

.wechat-card figcaption {
  margin-top: 14px;
}

.wechat-card figcaption strong,
.wechat-card figcaption span {
  display: block;
}

.wechat-card figcaption strong {
  font-size: 15px;
  line-height: 1.4;
}

.wechat-card figcaption span {
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 26px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a:hover {
  color: var(--green-dark);
}

@media (max-width: 1100px) {
  .hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 62px;
  }

  .capability-panel {
    max-width: 760px;
  }

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

@media (max-width: 980px) {
  nav,
  .desktop-only {
    display: none;
  }

  .about-grid,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .cards-grid,
  .dark-band ul,
  .faq-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .header-inner {
    padding: 10px 0;
  }

  .brand small {
    display: none;
  }

  .brand img {
    width: 36px;
    height: 36px;
  }

  .lang {
    padding: 8px 13px;
  }

  .hero-grid {
    gap: 34px;
    padding: 54px 0 46px;
  }

  h1 {
    font-size: clamp(36px, 10.5vw, 44px);
    line-height: 1.14;
    letter-spacing: -0.035em;
  }

  .hero-desc,
  .section-intro span,
  .about-grid > div > p,
  .contact-copy p {
    font-size: 16px;
  }

  .btn {
    width: 100%;
    padding: 13px 18px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .proof-list .tag {
    font-size: 12px;
  }

  .capability-panel {
    border-radius: 26px;
    padding: 18px;
  }

  .capability-grid,
  .stats-grid,
  .process-grid {
    grid-template-columns: 1fr;
  }

  .capability-card {
    min-height: auto;
  }

  .section-intro {
    padding-top: 62px;
  }

  .card,
  .step-card {
    padding: 22px;
  }

  .contact-section {
    border-radius: 28px;
    padding: 30px 22px;
  }

  .footer-inner {
    flex-direction: column;
  }
}