:root {
  --bg: #ffffff;
  --bg-alt: #f9fafb;
  --card-bg: #ffffff;
  --card-bg-soft: #fdf2f7;
  --border-subtle: rgba(0, 0, 0, 0.08);
  --primary: #ff6b9d;
  --primary-soft: rgba(255, 107, 157, 0.08);
  --primary-strong: #ff8fb5;
  --accent: #ff6b9d;
  --text-main: #111827;
  --text-soft: #4b5563;
  --text-muted: #9ca3af;
  --danger: #ef4444;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.08);
  --shadow-subtle: 0 10px 30px rgba(0, 0, 0, 0.06);
}

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

html,
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text-main);
}

body {
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 32px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.logo.small .logo-title {
  font-size: 16px;
}

.logo-mark {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.logo.small .logo-mark {
  width: 28px;
  height: 28px;
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.logo-title {
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 18px;
}

.logo-subtitle {
  font-size: 11px;
  color: var(--text-muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
  color: var(--text-soft);
}

.nav a {
  padding: 6px 4px;
  position: relative;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.16s ease-out;
  border-radius: 999px;
}

.nav a:hover::after {
  width: 100%;
}

.nav-cta {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 107, 157, 0.3);
  background: rgba(255, 107, 157, 0.05);
  color: var(--primary);
}

.nav-cta:hover {
  border-color: var(--primary);
  background: rgba(255, 107, 157, 0.1);
}

.hero {
  padding: 72px 0 40px;
  background: linear-gradient(160deg, #fff5f8 0%, #ffffff 50%, #fff9fb 100%);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 40px;
  align-items: center;
}

.hero-content h1 {
  font-size: 36px;
  line-height: 1.15;
  margin: 0 0 14px;
  letter-spacing: 0.02em;
  color: var(--text-main);
}

.hero-subtitle {
  margin: 0 0 16px;
  color: var(--text-soft);
  font-size: 15px;
}

.hero-highlights {
  list-style: none;
  padding: 0;
  margin: 0 0 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--text-main);
  font-size: 14px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.btn {
  border-radius: 999px;
  padding: 10px 18px;
  border: 1px solid transparent;
  font-size: 14px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: transform 0.12s ease-out, box-shadow 0.12s ease-out,
    background 0.12s ease-out, border-color 0.12s ease-out;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 8px 24px rgba(255, 107, 157, 0.35);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 32px rgba(255, 107, 157, 0.5);
}

.btn-outline {
  border-color: rgba(0, 0, 0, 0.15);
  color: var(--text-main);
  background: #ffffff;
}

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

.btn-full {
  width: 100%;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 11px;
  color: var(--text-muted);
}

.hero-tags span {
  border-radius: 999px;
  padding: 4px 10px;
  border: 1px solid rgba(255, 107, 157, 0.2);
  background: rgba(255, 107, 157, 0.05);
  color: var(--primary);
}

.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-end;
}

.device-card {
  width: 320px;
  border-radius: 26px;
  padding: 16px 16px 14px;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.07);
  box-shadow: var(--shadow-soft);
}

.device-tag {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.device-body {
  position: relative;
  height: 170px;
  border-radius: 22px;
  background: linear-gradient(135deg, #fff5f8 0%, #fce7f0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.device-ring {
  position: absolute;
  width: 160px;
  height: 160px;
  border-radius: 999px;
  border: 1px dashed rgba(255, 107, 157, 0.35);
  box-shadow: 0 0 30px rgba(255, 107, 157, 0.15);
}

.device-core {
  position: relative;
  width: 80px;
  height: 110px;
  border-radius: 999px;
  background: linear-gradient(160deg, #ff6b9d, #ff8fb5);
  box-shadow: 0 0 26px rgba(255, 107, 157, 0.45),
    0 12px 30px rgba(255, 107, 157, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 28px;
}

.device-core::before {
  content: "";
  position: absolute;
  top: 11px;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
}

.device-meta {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed rgba(0, 0, 0, 0.1);
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.meta-label {
  display: block;
  margin-bottom: 2px;
}

.meta-value {
  color: var(--text-main);
}

.meta-value-safe {
  color: #10b981;
}

.hero-badge {
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 107, 157, 0.25);
  background: rgba(255, 107, 157, 0.06);
  font-size: 11px;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}

.hero-badge-title {
  font-weight: 600;
  color: var(--primary);
}

.hero-badge-subtitle {
  color: var(--text-muted);
}

.section {
  padding: 52px 0;
  background: #ffffff;
}

.section-alt {
  background: #fafafa;
}

.section-inner {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.section-header {
  max-width: 620px;
}

.section h2 {
  font-size: 24px;
  margin: 0 0 10px;
  color: var(--text-main);
}

.section p {
  margin: 0;
  color: var(--text-soft);
  font-size: 14px;
}

.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 26px;
  align-items: flex-start;
}

.card-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-subtle);
}

.card h3 {
  margin: 0 0 8px;
  font-size: 15px;
  color: var(--text-main);
}

.card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text-soft);
  font-size: 13px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: 16px 18px 14px;
  border: 1px solid rgba(0, 0, 0, 0.07);
  box-shadow: var(--shadow-soft);
}

.feature-tag {
  font-size: 11px;
  display: inline-flex;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(255, 107, 157, 0.08);
  border: 1px solid rgba(255, 107, 157, 0.2);
  color: var(--primary);
  margin-bottom: 8px;
}

.feature-card h3 {
  margin: 0 0 6px;
  font-size: 16px;
  color: var(--text-main);
}

.feature-card p {
  font-size: 13px;
  margin: 0 0 8px;
  color: var(--text-soft);
}

.feature-card ul {
  margin: 0;
  padding-left: 18px;
  font-size: 12px;
  color: var(--text-soft);
}

.story-cards {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.story-card {
  border-radius: var(--radius-lg);
  padding: 12px 14px;
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-subtle);
}

.story-card h3 {
  margin: 0 0 6px;
  font-size: 14px;
  color: var(--text-main);
}

.story-card p {
  margin: 0;
  font-size: 13px;
  color: var(--text-soft);
}

.future-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.future-block {
  border-radius: var(--radius-xl);
  padding: 16px 18px 14px;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.07);
  box-shadow: var(--shadow-soft);
}

.future-block h3 {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--text-main);
}

.future-block ul {
  margin: 0;
  padding-left: 18px;
  font-size: 13px;
  color: var(--text-soft);
}

.contact-section {
  background: linear-gradient(160deg, #fff5f8 0%, #ffffff 60%);
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13px;
  color: var(--text-soft);
}

.contact-label {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.contact-form {
  background: #ffffff;
  border-radius: var(--radius-xl);
  padding: 16px 16px 14px;
  border: 1px solid rgba(0, 0, 0, 0.07);
  box-shadow: var(--shadow-soft);
  font-size: 13px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 10px;
}

.form-row label {
  font-size: 12px;
  color: var(--text-soft);
}

.form-row input,
.form-row select,
.form-row textarea {
  border-radius: 10px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  background: #ffffff;
  padding: 7px 10px;
  font-size: 13px;
  color: var(--text-main);
  outline: none;
  transition: border-color 0.12s ease-out, box-shadow 0.12s ease-out;
}

.form-row input::placeholder,
.form-row textarea::placeholder {
  color: var(--text-muted);
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 107, 157, 0.12);
}

.form-tip {
  margin: 8px 0 0;
  font-size: 11px;
  color: var(--text-muted);
}

.site-footer {
  border-top: 1px solid rgba(0, 0, 0, 0.07);
  background: #fafafa;
  padding: 18px 0 16px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  padding-bottom: 10px;
}

.footer-desc {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--text-soft);
  max-width: 320px;
}

.footer-right {
  display: flex;
  gap: 32px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  color: var(--text-soft);
}

.footer-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.footer-col a {
  color: var(--text-soft);
}

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

.footer-bottom {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  text-align: center;
  border-top: 1px solid rgba(0, 0, 0, 0.07);
  padding-top: 10px;
  font-size: 11px;
  color: var(--text-muted);
}

.footer-beian {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-beian:hover {
  color: var(--primary);
}

@media (max-width: 900px) {
  .hero-inner,
  .two-col,
  .feature-grid,
  .future-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-visual {
    align-items: flex-start;
  }

  .device-card {
    width: 100%;
    max-width: 360px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .nav {
    flex-wrap: wrap;
  }

  .hero {
    padding-top: 56px;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }

  .hero-content h1 {
    font-size: 26px;
  }

  .section {
    padding: 38px 0;
  }

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

  .footer-right {
    width: 100%;
    justify-content: space-between;
  }

  .hero {
    padding-bottom: 26px;
  }
}