:root {
  --ink: #17211c;
  --muted: #5f6f67;
  --line: #dde7e1;
  --surface: #ffffff;
  --soft: #f4f8f5;
  --green: #147d5f;
  --green-dark: #0f5f49;
  --gold: #c9892b;
  --charcoal: #24312b;
  --shadow: 0 18px 50px rgba(23, 33, 28, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px);
  background: rgba(251, 252, 250, 0.92);
  border-bottom: 1px solid rgba(221, 231, 225, 0.8);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 188px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: #fff;
  background: var(--green);
  border-radius: 8px;
  font-weight: 800;
}

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

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 15px;
}

.nav-links a:hover,
.text-link:hover {
  color: var(--green);
}

.header-action {
  padding: 10px 16px;
  color: #fff;
  background: var(--charcoal);
  border-radius: 8px;
  font-weight: 700;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
  gap: clamp(28px, 5vw, 70px);
  align-items: center;
  padding: clamp(56px, 8vw, 96px) clamp(20px, 5vw, 72px) 64px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--green);
  font-size: 14px;
  font-weight: 800;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 20px;
  font-size: clamp(42px, 7vw, 84px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: 0;
}

.hero-text {
  max-width: 680px;
  color: var(--muted);
  font-size: 20px;
}

.hero-actions,
.demo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  cursor: pointer;
}

.button svg,
.text-link svg,
.contact-methods svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

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

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

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

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

.proof-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.proof-strip span,
.tag,
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 5px 10px;
  color: var(--green-dark);
  background: #e8f4ef;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
}

.hero-visual {
  position: relative;
}

.hero-visual img,
.hero-dashboard {
  width: 100%;
  aspect-ratio: 4 / 5;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-visual img {
  object-fit: cover;
}

.hero-dashboard {
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: clamp(22px, 4vw, 34px);
  background: #eef5f1;
  border: 1px solid var(--line);
}

.dashboard-bar {
  display: flex;
  gap: 8px;
}

.dashboard-bar span {
  width: 12px;
  height: 12px;
  background: #bfd6cc;
  border-radius: 50%;
}

.dashboard-title {
  display: grid;
  gap: 8px;
  padding: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.dashboard-title small,
.dashboard-metrics small {
  color: var(--muted);
}

.dashboard-title strong {
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.15;
}

.dashboard-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.dashboard-metrics div {
  display: grid;
  gap: 6px;
  padding: 14px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.dashboard-metrics strong {
  color: var(--green-dark);
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1;
}

.dashboard-list {
  display: grid;
  gap: 10px;
  padding: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.dashboard-list p {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  color: var(--muted);
}

.dashboard-list span {
  width: 9px;
  height: 9px;
  background: var(--green);
  border-radius: 50%;
  flex: 0 0 auto;
}

.live-panel {
  position: absolute;
  right: 18px;
  bottom: 18px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  width: min(330px, calc(100% - 36px));
  padding: 14px;
  background: rgba(255, 255, 255, 0.93);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 8px;
  box-shadow: 0 14px 35px rgba(23, 33, 28, 0.18);
}

.live-panel small {
  display: block;
  color: var(--muted);
}

.live-panel strong {
  font-size: 22px;
}

.section {
  padding: 72px clamp(20px, 5vw, 72px);
}

.muted {
  background: var(--soft);
}

.section-heading {
  max-width: 820px;
  margin-bottom: 34px;
}

.service-grid,
.case-grid,
.price-grid,
.steps,
.feature-grid,
.metric-grid {
  display: grid;
  gap: 18px;
}

.service-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.service-card,
.case-card,
.price-card,
.steps div,
.feature-box,
.metric-box {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.service-card {
  padding: 24px;
}

.service-card svg {
  width: 32px;
  height: 32px;
  margin-bottom: 18px;
  color: var(--green);
}

.service-card p,
.case-body p,
.price-card li,
.steps p,
.feature-box p,
.metric-box p {
  color: var(--muted);
}

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

.case-card {
  overflow: hidden;
}

.case-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.case-body {
  padding: 22px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--green-dark);
  font-weight: 800;
}

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

.price-card {
  position: relative;
  padding: 28px;
}

.price-card.featured {
  border-color: var(--green);
  box-shadow: var(--shadow);
}

.badge {
  position: absolute;
  top: 18px;
  right: 18px;
  color: #fff;
  background: var(--gold);
}

.price {
  margin: 10px 0 18px;
  color: var(--green-dark);
  font-size: 32px;
  font-weight: 900;
}

.price-card ul {
  display: grid;
  gap: 10px;
  min-height: 142px;
  margin: 0 0 22px;
  padding-left: 20px;
}

.steps {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.steps div {
  padding: 22px;
}

.steps span {
  display: block;
  margin-bottom: 18px;
  color: var(--gold);
  font-weight: 900;
}

.steps strong {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.7fr);
  gap: clamp(26px, 5vw, 70px);
  padding: 72px clamp(20px, 5vw, 72px);
  color: #fff;
  background: var(--charcoal);
}

.contact-copy p {
  color: rgba(255, 255, 255, 0.78);
}

.contact-copy .eyebrow {
  color: #9edec8;
}

.contact-methods {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.contact-methods a,
.contact-methods span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
}

.wechat-card {
  display: flex;
  align-items: center;
  gap: 16px;
  width: min(420px, 100%);
  margin-top: 24px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
}

.wechat-card img {
  width: 128px;
  height: 128px;
  object-fit: cover;
  background: #fff;
  border-radius: 8px;
}

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

.wechat-card strong {
  margin-bottom: 6px;
  color: #fff;
  font-size: 22px;
}

.wechat-card span {
  color: rgba(255, 255, 255, 0.76);
}

.lead-form {
  display: grid;
  gap: 14px;
  padding: 24px;
  color: var(--ink);
  background: #fff;
  border-radius: 8px;
}

.lead-form label {
  display: grid;
  gap: 7px;
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  min-height: 46px;
  padding: 11px 12px;
  color: var(--ink);
  background: #fbfcfa;
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
}

textarea {
  resize: vertical;
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(20px, 5vw, 72px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.demo-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
  gap: clamp(28px, 5vw, 68px);
  align-items: center;
  padding: 58px clamp(20px, 5vw, 72px);
  background: var(--soft);
}

.demo-hero img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

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

.metric-box {
  padding: 24px;
}

.metric-box strong {
  display: block;
  margin-bottom: 8px;
  color: var(--green-dark);
  font-size: 34px;
}

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

.feature-box {
  padding: 24px;
}

.demo-form-wrap {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.7fr);
  gap: clamp(24px, 5vw, 60px);
}

@media (max-width: 980px) {
  .hero,
  .contact-section,
  .demo-hero,
  .demo-form-wrap {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .case-grid,
  .price-grid,
  .steps,
  .feature-grid,
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .nav-links {
    display: none;
  }
}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
    gap: 12px;
  }

  .header-action {
    display: none;
  }

  .hero,
  .section,
  .contact-section,
  .demo-hero {
    padding-left: 18px;
    padding-right: 18px;
  }

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

  .service-grid,
  .case-grid,
  .price-grid,
  .steps,
  .feature-grid,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .live-panel {
    position: static;
    width: 100%;
    margin-top: 12px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}