:root {
  --green-900: #173a2a;
  --green-700: #24724c;
  --green-600: #2f8b58;
  --mint-100: #e9f7ef;
  --mint-50: #f4fbf7;
  --ink: #17201b;
  --muted: #5f6f66;
  --line: #dbe8df;
  --white: #ffffff;
  --amber: #f2a33a;
  --blue: #3177b8;
  --shadow: 0 18px 50px rgba(23, 58, 42, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family:
    Inter,
    "PingFang SC",
    "Microsoft YaHei",
    Arial,
    sans-serif;
  background: var(--white);
  line-height: 1.6;
}

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

button,
input {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 40px;
  border-bottom: 1px solid rgba(219, 232, 223, 0.82);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 190px;
}

.brand-logo {
  display: block;
  width: 42px;
  height: 42px;
  object-fit: contain;
}

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

.brand strong {
  font-size: 18px;
  line-height: 1.15;
}

.brand small {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.2;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.main-nav a,
.nav-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 8px;
  color: var(--green-900);
  font-size: 14px;
  font-weight: 700;
}

.main-nav a:hover {
  background: var(--mint-100);
}

.nav-action {
  color: var(--white);
  background: var(--green-700);
}

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 70svh;
  overflow: hidden;
  background: var(--green-900);
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(250, 253, 251, 0.98) 0%, rgba(250, 253, 251, 0.82) 32%, rgba(250, 253, 251, 0.24) 62%, rgba(23, 58, 42, 0.26) 100%),
    linear-gradient(0deg, rgba(23, 58, 42, 0.14), rgba(255, 255, 255, 0));
}

.hero-content {
  position: relative;
  width: min(1180px, calc(100% - 80px));
  margin: 0 auto;
  padding: 48px 0 42px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--green-700);
  font-size: 13px;
  font-weight: 800;
}

.hero h1 {
  margin: 0;
  color: var(--green-900);
  font-size: 72px;
  line-height: 1.02;
  font-weight: 900;
}

.hero-copy {
  width: min(620px, 100%);
  margin: 18px 0 0;
  color: #32443a;
  font-size: 20px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  cursor: pointer;
}

.primary-button {
  color: var(--white);
  background: var(--green-700);
  box-shadow: 0 12px 26px rgba(36, 114, 76, 0.24);
}

.secondary-button {
  color: var(--green-900);
  border-color: rgba(36, 114, 76, 0.22);
  background: rgba(255, 255, 255, 0.7);
}

.hero-metrics {
  display: grid;
  width: min(540px, 100%);
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 28px 0 0;
}

.hero-metrics div {
  padding: 16px;
  border: 1px solid rgba(36, 114, 76, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.74);
}

.hero-metrics dt {
  color: var(--green-700);
  font-size: 30px;
  line-height: 1;
  font-weight: 900;
}

.hero-metrics dd {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.section {
  padding: 82px 0;
}

.section-white {
  background: var(--white);
}

.section-muted {
  background: var(--mint-50);
}

.section-inner {
  width: min(1180px, calc(100% - 80px));
  margin: 0 auto;
}

.split-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 54px;
  align-items: start;
}

.section-heading h2 {
  margin: 0;
  color: var(--green-900);
  font-size: 38px;
  line-height: 1.22;
}

.section-heading p:not(.eyebrow) {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.section-heading.compact {
  max-width: 760px;
  margin-bottom: 28px;
}

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

.pain-card {
  display: grid;
  gap: 10px;
  min-height: 184px;
  padding: 20px;
}

.pain-card span {
  display: inline-grid;
  width: 38px;
  height: 30px;
  place-items: center;
  border-radius: 8px;
  color: var(--green-700);
  background: var(--mint-100);
  font-size: 13px;
  font-weight: 900;
}

.pain-card h3,
.pain-card p {
  margin: 0;
}

.pain-card h3 {
  color: var(--green-900);
  font-size: 18px;
  line-height: 1.3;
}

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

.process-list {
  display: grid;
  gap: 12px;
}

.process-item {
  display: grid;
  grid-template-columns: 56px 150px 1fr;
  gap: 18px;
  align-items: center;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.process-item span {
  display: inline-grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 8px;
  color: var(--green-700);
  background: var(--mint-100);
  font-weight: 900;
}

.process-item h3,
.process-item p {
  margin: 0;
}

.process-item h3 {
  color: var(--green-900);
  font-size: 18px;
}

.process-item p {
  color: var(--muted);
  font-size: 15px;
}

.terminal-grid,
.advantage-grid,
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.terminal-card,
.advantage-card,
.pain-card,
.team-card,
.demo-step {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 24px rgba(23, 58, 42, 0.06);
}

.terminal-card {
  min-height: 220px;
  padding: 22px;
}

.terminal-index {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  color: var(--green-700);
  background: var(--mint-100);
  font-size: 12px;
  font-weight: 900;
}

.terminal-card h3,
.advantage-card h3,
.team-card h3 {
  margin: 18px 0 10px;
  color: var(--green-900);
  font-size: 20px;
  line-height: 1.28;
}

.terminal-card p,
.advantage-card p,
.team-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

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

.advantage-card {
  min-height: 180px;
  padding: 22px;
}

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

.team-card {
  min-height: 170px;
  padding: 22px;
}

.team-card h3 {
  margin-top: 0;
}

.demo-layout {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 54px;
  align-items: start;
}

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

.demo-step {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 14px;
  min-height: 152px;
  padding: 18px;
}

.demo-step span {
  display: inline-grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 8px;
  color: var(--white);
  background: var(--green-700);
  font-size: 13px;
  font-weight: 900;
}

.demo-step h3,
.demo-step p {
  margin: 0;
}

.demo-step h3 {
  color: var(--green-900);
  font-size: 18px;
  line-height: 1.3;
}

.demo-step p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 15px;
}

.cta-section {
  color: var(--white);
  background: var(--green-900);
}

.cta-layout {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 56px;
  align-items: center;
}

.cta-section .eyebrow,
.cta-section h2,
.cta-section p {
  color: var(--white);
}

.cta-section h2 {
  margin: 0;
  font-size: 38px;
  line-height: 1.22;
}

.cta-section p:not(.eyebrow) {
  width: min(620px, 100%);
  color: rgba(255, 255, 255, 0.78);
  font-size: 17px;
}

.trial-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.trial-list span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.08);
  font-size: 13px;
  font-weight: 800;
}

.wechat-card {
  display: grid;
  grid-template-columns: 148px 1fr;
  gap: 20px;
  align-items: center;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.wechat-qr {
  display: block;
  width: 148px;
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
  background: var(--white);
  object-fit: contain;
}

.wechat-info {
  min-width: 0;
}

.wechat-label {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  color: #2e1b00;
  background: var(--amber);
  font-size: 12px;
  font-weight: 900;
}

.wechat-info strong {
  display: block;
  margin-top: 14px;
  color: var(--white);
  font-size: 24px;
  line-height: 1.25;
}

.wechat-info p {
  width: auto;
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px;
}

.cta-section .wechat-info p {
  width: auto;
  margin: 10px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 15px;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
  padding: 24px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: var(--white);
  font-size: 13px;
}

@media (max-width: 980px) {
  .site-header {
    padding: 0 22px;
  }

  .main-nav {
    display: none;
  }

  .hero {
    min-height: 72svh;
  }

  .hero-content,
  .section-inner {
    width: min(100% - 44px, 900px);
  }

  .hero h1 {
    font-size: 58px;
  }

  .hero-copy {
    font-size: 18px;
  }

  .split-layout,
  .demo-layout,
  .cta-layout {
    grid-template-columns: 1fr;
  }

  .terminal-grid,
  .advantage-grid,
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-item {
    grid-template-columns: 52px 1fr;
  }

  .process-item p {
    grid-column: 2;
  }

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

@media (max-width: 640px) {
  .site-header {
    min-height: 66px;
    padding: 0 16px;
  }

  .brand {
    min-width: 0;
  }

  .brand small,
  .nav-action {
    display: none;
  }

  .hero {
    min-height: 70svh;
    align-items: end;
  }

  .hero-shade {
    background:
      linear-gradient(180deg, rgba(250, 253, 251, 0.5) 0%, rgba(250, 253, 251, 0.94) 42%, rgba(250, 253, 251, 0.98) 100%),
      linear-gradient(90deg, rgba(250, 253, 251, 0.9), rgba(250, 253, 251, 0.22));
  }

  .hero-content {
    width: calc(100% - 32px);
    padding: 36px 0 28px;
  }

  .hero h1 {
    font-size: 46px;
  }

  .hero-copy {
    font-size: 16px;
  }

  .hero-actions {
    gap: 10px;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .hero-metrics {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
  }

  .hero-metrics div {
    padding: 12px 8px;
  }

  .hero-metrics dt {
    font-size: 24px;
  }

  .hero-metrics dd {
    font-size: 12px;
  }

  .section {
    padding: 58px 0;
  }

  .section-inner {
    width: calc(100% - 32px);
  }

  .section-heading h2,
  .cta-section h2 {
    font-size: 30px;
  }

  .process-item {
    grid-template-columns: 46px 1fr;
    gap: 12px;
    padding: 16px;
  }

  .terminal-grid,
  .advantage-grid,
  .team-grid,
  .pain-grid,
  .demo-steps {
    grid-template-columns: 1fr;
  }

  .terminal-card,
  .advantage-card,
  .pain-card,
  .team-card,
  .demo-step {
    min-height: auto;
  }

  .wechat-card {
    grid-template-columns: 1fr;
    padding: 18px;
  }

  .wechat-qr {
    width: 100%;
    max-width: 220px;
  }
}