:root {
  --bg-primary: #060D0D;
  --bg-secondary: #0C1518;
  --accent-cyan: #10B981;
  --accent-purple: #6D28D9;
  --accent-light: #34D399;
  --accent-warn: #F59E0B;
  --text-heading: #F0FDF4;
  --text-body: #9CA3AF;
  --text-muted: #6B7280;
  --card-bg: rgba(255, 255, 255, 0.04);
  --card-border: rgba(16, 185, 129, 0.18);
  --glow-cyan: rgba(16, 185, 129, 0.25);
  --glow-purple: rgba(109, 40, 217, 0.18);
  --max-width: 1200px;
  --section-padding: 100px 20px;
  --font-stack: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  background-color: var(--bg-primary);
  color: var(--text-body);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== Hero Section ========== */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 50%, var(--glow-cyan), transparent),
    radial-gradient(ellipse 40% 40% at 60% 40%, var(--glow-purple), transparent);
  opacity: 0.6;
  z-index: 0;
}

.hero__bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  padding: 40px 20px;
}

.hero__brand {
  font-size: 16px;
  color: var(--text-muted);
  letter-spacing: 2px;
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards 0.2s;
}

.hero__title {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 700;
  color: var(--text-heading);
  line-height: 1.3;
  max-width: 700px;
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards 0.4s;
}

.hero__subtitle {
  font-size: clamp(16px, 2.5vw, 22px);
  color: var(--text-body);
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards 0.6s;
}

.hero__points {
  font-size: clamp(13px, 1.8vw, 16px);
  color: var(--text-muted);
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards 0.8s;
}

.hero__cta {
  display: inline-block;
  margin-top: 12px;
  padding: 16px 48px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  box-shadow: 0 0 30px var(--glow-cyan);
  transition: box-shadow 0.3s, transform 0.3s;
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards 1s;
}

.hero__cta:hover {
  box-shadow: 0 0 50px var(--glow-cyan), 0 0 80px var(--glow-purple);
  transform: translateY(-2px);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== Section Common ========== */

.section-title {
  font-size: clamp(24px, 3.5vw, 32px);
  font-weight: 700;
  color: var(--text-heading);
  text-align: center;
  margin-bottom: 60px;
}

/* ========== Value Cards Section ========== */

.value {
  padding: var(--section-padding);
  background-color: var(--bg-primary);
}

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

.value__card {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 40px 32px;
  transition: border-color 0.3s, transform 0.3s;
}

.value__card:hover {
  border-color: rgba(16, 185, 129, 0.4);
  transform: translateY(-4px);
}

.value__icon {
  margin-bottom: 24px;
}

.value__card-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 12px;
}

.value__card-desc {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.7;
}

/* ========== Scroll Fade-in ========== */

.fade-in-element {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-element.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-element:nth-child(2) { transition-delay: 0.15s; }
.fade-in-element:nth-child(3) { transition-delay: 0.3s; }

/* ========== CTA Section ========== */

.cta {
  position: relative;
  padding: 120px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.cta__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 50% at 50% 50%, var(--glow-cyan), transparent),
    radial-gradient(ellipse 30% 40% at 55% 50%, var(--glow-purple), transparent);
  opacity: 0.4;
  z-index: 0;
}

.cta__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.cta__title {
  font-size: clamp(22px, 3.5vw, 32px);
  font-weight: 700;
  color: var(--text-heading);
}

.cta__subtitle {
  font-size: 18px;
  color: var(--text-body);
}

.cta__qr-wrapper {
  margin: 20px 0;
}

.cta__qr {
  display: block;
  width: 240px;
  height: auto;
  border-radius: 12px;
}

.cta__wechat {
  font-size: 16px;
  color: var(--text-body);
}

.cta__divider {
  width: 200px;
  height: 1px;
  background: rgba(255, 255, 255, 0.1);
  margin: 8px 0;
}

.cta__company {
  font-size: 14px;
  color: var(--text-muted);
}

.cta__account {
  font-size: 14px;
  color: var(--text-muted);
}

/* ========== Pain Points Section ========== */

.pain {
  padding: var(--section-padding);
  background-color: var(--bg-secondary);
}

.pain__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}

.pain__card {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 40px 32px;
  transition: border-color 0.3s, transform 0.3s;
}

.pain__card:hover {
  border-color: rgba(16, 185, 129, 0.4);
  transform: translateY(-4px);
}

.pain__icon {
  margin-bottom: 20px;
}

.pain__card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 12px;
}

.pain__card-desc {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.7;
}

.pain__rings {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  justify-items: center;
}

.ring-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.ring-wrap {
  position: relative;
  width: 120px;
  height: 120px;
  margin-bottom: 16px;
}

.ring-svg {
  display: block;
}

.ring-progress {
  transition: stroke-dashoffset 1.5s ease-out;
}

.ring-number {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  font-weight: 700;
  color: var(--text-heading);
}

.ring-label {
  font-size: 14px;
  color: var(--text-body);
  max-width: 180px;
}

/* ========== Modules Section ========== */

.modules {
  padding: var(--section-padding);
  background-color: var(--bg-secondary);
}

.modules__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.modules__card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 24px 28px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s;
}

.modules__card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-cyan), var(--accent-purple));
}

.modules__card:hover {
  transform: translateX(4px);
}

.modules__num {
  font-size: 32px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  flex-shrink: 0;
}

.modules__card-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 8px;
}

.modules__card-desc {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.6;
}

/* ========== Process Section ========== */

.process {
  padding: var(--section-padding);
  background-color: var(--bg-primary);
}

.process__timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  padding-top: 20px;
}

.process__line {
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(to right, var(--accent-cyan), var(--accent-purple));
  z-index: 0;
}

.process__step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
}

.process__circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 0 20px var(--glow-cyan);
}

.process__step-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 8px;
}

.process__step-desc {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.6;
  max-width: 200px;
  margin-bottom: 12px;
}

.process__step-time {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-cyan);
}

/* ========== Dashboard Section ========== */

.dashboard {
  padding: var(--section-padding);
  background-color: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.dashboard::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 50% 50% at 50% 50%, rgba(16, 185, 129, 0.08), transparent);
  pointer-events: none;
}

.dashboard__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  justify-items: center;
  position: relative;
  z-index: 1;
}

.dashboard__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.gauge-wrap {
  position: relative;
  width: 150px;
  height: 150px;
  margin-bottom: 20px;
}

.gauge-svg {
  display: block;
}

.gauge-number {
  font-size: 40px;
}

.dashboard__label {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 8px;
}

.dashboard__desc {
  font-size: 14px;
  color: var(--text-body);
}

/* ========== Industry Section ========== */

.industry {
  padding: var(--section-padding);
  background-color: var(--bg-primary);
}

.industry__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.industry__card {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: border-color 0.3s, transform 0.3s;
}

.industry__card:hover {
  border-color: rgba(16, 185, 129, 0.4);
  transform: translateY(-2px);
}

.industry__icon {
  margin-bottom: 12px;
}

.industry__name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 8px;
}

.industry__tags {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ========== Responsive: Tablet ========== */

@media (max-width: 1023px) {
  :root {
    --section-padding: 80px 20px;
  }

  .pain__cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .pain__rings {
    gap: 24px;
  }

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

  .value__card:last-child {
    grid-column: 1 / -1;
    max-width: 400px;
    margin: 0 auto;
  }

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

  .process__timeline {
    gap: 20px;
  }

  .process__step-desc {
    font-size: 13px;
  }

  .dashboard__grid {
    gap: 24px;
  }

  .gauge-wrap {
    width: 130px;
    height: 130px;
  }

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

/* ========== Responsive: Mobile ========== */

@media (max-width: 767px) {
  :root {
    --section-padding: 60px 16px;
  }

  .hero__content {
    padding: 24px 16px;
  }

  .hero__cta {
    padding: 14px 36px;
    font-size: 15px;
    width: 100%;
    max-width: 280px;
    text-align: center;
  }

  .section-title {
    margin-bottom: 40px;
  }

  .pain__cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .pain__card {
    padding: 32px 24px;
  }

  .pain__rings {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .ring-wrap {
    width: 100px;
    height: 100px;
  }

  .ring-svg {
    width: 100px;
    height: 100px;
  }

  .ring-number {
    font-size: 28px;
  }

  .ring-label {
    font-size: 12px;
  }

  .value__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .value__card {
    padding: 32px 24px;
  }

  .value__card:last-child {
    max-width: none;
  }

  .modules__grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .modules__card {
    padding: 20px 24px;
  }

  .modules__num {
    font-size: 28px;
  }

  .process__timeline {
    grid-template-columns: 1fr;
    gap: 0;
    padding-top: 0;
  }

  .process__line {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 20px;
    right: auto;
    width: 2px;
    height: 100%;
  }

  .process__step {
    flex-direction: row;
    align-items: flex-start;
    text-align: left;
    gap: 20px;
    padding: 16px 0 16px 0;
  }

  .process__circle {
    flex-shrink: 0;
    margin-bottom: 0;
  }

  .process__step-desc {
    max-width: none;
  }

  .dashboard__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .gauge-wrap {
    width: 120px;
    height: 120px;
  }

  .gauge-svg {
    width: 120px;
    height: 120px;
  }

  .gauge-number {
    font-size: 32px;
  }

  .industry__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .industry__card {
    padding: 20px 16px;
  }

  .industry__tags {
    font-size: 11px;
  }

  .cta {
    padding: 80px 16px;
  }

  .cta__qr {
    width: 200px;
  }
}