/*
 * 天津恒梦电子科技有限公司官网样式
 * 颜色、间距、圆角和字号均集中在此，修改变量即可统一调整视觉风格。
 */
:root {
  color-scheme: light dark;
  --color-primary: #0f5f73;
  --color-primary-hover: #0b4b5b;
  --color-primary-soft: #e9f4f6;
  --color-bg: #f7f9fa;
  --color-surface: #ffffff;
  --color-surface-alt: #eef3f4;
  --color-text: #17252a;
  --color-muted: #5b6b70;
  --color-border: #d8e1e3;
  --color-success: #27724f;
  --color-warning: #8a5a12;
  --color-focus: #147d98;
  --color-on-primary: #ffffff;
  --shadow-sm: 0 6px 20px rgba(20, 52, 60, 0.07);
  --shadow-md: 0 16px 40px rgba(20, 52, 60, 0.1);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;

  --radius-sm: 0.4rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;
  --radius-pill: 999px;

  --text-xs: 0.78rem;
  --text-sm: 0.9rem;
  --text-base: 1rem;
  --text-lg: 1.18rem;
  --text-xl: clamp(1.45rem, 3vw, 2rem);
  --text-2xl: clamp(2rem, 6vw, 3.8rem);
  --text-hero: clamp(2.35rem, 8vw, 5.25rem);

  --content-width: 72rem;
  --header-height: 4.5rem;
  --transition: 180ms ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #68b9c9;
    --color-primary-hover: #8bcbd7;
    --color-primary-soft: #17363d;
    --color-bg: #101719;
    --color-surface: #172124;
    --color-surface-alt: #1c292d;
    --color-text: #edf5f6;
    --color-muted: #afbdc0;
    --color-border: #304044;
    --color-success: #7dcea5;
    --color-warning: #e1b86c;
    --color-focus: #8bd8e7;
    --color-on-primary: #0c242a;
    --shadow-sm: 0 6px 20px rgba(0, 0, 0, 0.22);
    --shadow-md: 0 16px 40px rgba(0, 0, 0, 0.3);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + var(--space-4));
}

body {
  margin: 0;
  color: var(--color-text);
  background: var(--color-bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: var(--text-base);
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

body,
button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: var(--color-primary);
  text-underline-offset: 0.2em;
}

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

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

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

h1,
h2,
h3 {
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 {
  font-size: var(--text-2xl);
}

h2 {
  font-size: var(--text-xl);
}

h3 {
  font-size: var(--text-lg);
}

button,
a {
  transition: color var(--transition), background-color var(--transition), border-color var(--transition), transform var(--transition);
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: var(--space-3);
  left: var(--space-3);
  padding: var(--space-2) var(--space-4);
  color: var(--color-on-primary);
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(100% - 2rem, var(--content-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  min-height: var(--header-height);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  min-height: var(--header-height);
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  font-size: var(--text-lg);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

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

.brand-mark {
  width: 2.25rem;
  height: 2.25rem;
  color: var(--color-on-primary);
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  align-items: center;
  justify-content: center;
  padding: 0;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle svg {
  width: 1.35rem;
  height: 1.35rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.site-nav a {
  padding: var(--space-2) var(--space-3);
  color: var(--color-muted);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.section {
  padding-block: var(--space-8);
}

.section-alt {
  background: var(--color-surface-alt);
}

.section-heading {
  max-width: 44rem;
  margin-bottom: var(--space-7);
}

.section-heading p,
.lead,
.muted {
  color: var(--color-muted);
}

.eyebrow {
  margin-bottom: var(--space-3);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.hero {
  display: grid;
  min-height: min(46rem, calc(100vh - var(--header-height)));
  align-items: center;
  gap: var(--space-7);
  padding-block: var(--space-8);
}

.hero h1 {
  max-width: 13ch;
  margin-bottom: var(--space-5);
  font-size: var(--text-hero);
}

.hero .lead {
  max-width: 40rem;
  margin-bottom: var(--space-6);
  font-size: var(--text-lg);
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.button {
  display: inline-flex;
  min-height: 2.9rem;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-5);
  color: var(--color-on-primary);
  background: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  font-weight: 700;
  text-decoration: none;
}

.button:hover {
  color: var(--color-on-primary);
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
}

.button-secondary {
  color: var(--color-text);
  background: transparent;
  border-color: var(--color-border);
}

.button-secondary:hover {
  color: var(--color-primary);
  background: var(--color-surface);
  border-color: var(--color-primary);
}

.hero-visual {
  position: relative;
  overflow: hidden;
  min-height: 18rem;
  padding: var(--space-6);
  color: var(--color-primary);
  background: linear-gradient(145deg, var(--color-primary-soft), var(--color-surface));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.hero-visual::before,
.hero-visual::after {
  position: absolute;
  content: "";
  border: 1px solid var(--color-primary);
  border-radius: 50%;
  opacity: 0.18;
}

.hero-visual::before {
  width: 15rem;
  height: 15rem;
  top: -5rem;
  right: -4rem;
}

.hero-visual::after {
  width: 9rem;
  height: 9rem;
  bottom: -3rem;
  left: -2rem;
}

.hero-visual svg {
  position: absolute;
  inset: 12% 10%;
  width: 80%;
  height: 76%;
}

.card-grid,
.product-list,
.value-grid,
.service-grid {
  display: grid;
  gap: var(--space-5);
}

.card,
.service-card,
.product-card,
.value-card,
.notice {
  padding: var(--space-5);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.card {
  display: flex;
  flex-direction: column;
}

.card p,
.service-card p,
.product-card p,
.value-card p {
  color: var(--color-muted);
}

.card-link {
  margin-top: auto;
  font-weight: 700;
  text-decoration: none;
}

.icon-box {
  display: inline-flex;
  width: 3rem;
  height: 3rem;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: var(--radius-sm);
}

.icon-box svg {
  width: 1.5rem;
  height: 1.5rem;
}

.steps {
  display: grid;
  gap: var(--space-4);
  padding: 0;
  list-style: none;
  counter-reset: service-step;
}

.steps li {
  position: relative;
  padding: var(--space-5);
  padding-left: 4.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  counter-increment: service-step;
}

.steps li::before {
  position: absolute;
  top: var(--space-5);
  left: var(--space-5);
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  color: var(--color-on-primary);
  background: var(--color-primary);
  border-radius: 50%;
  content: counter(service-step);
  font-weight: 700;
}

.feature-list {
  display: grid;
  gap: var(--space-3);
  padding: 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding: var(--space-4) var(--space-4) var(--space-4) 2.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.feature-list li::before {
  position: absolute;
  top: 1.25rem;
  left: var(--space-4);
  width: 0.6rem;
  height: 0.6rem;
  background: var(--color-primary);
  border-radius: 50%;
  content: "";
}

.cta {
  display: grid;
  gap: var(--space-5);
  padding: var(--space-6);
  color: var(--color-on-primary);
  background: var(--color-primary);
  border-radius: var(--radius-lg);
}

.cta h2,
.cta p {
  margin-bottom: 0;
}

.cta .button {
  color: var(--color-primary-hover);
  background: var(--color-on-primary);
  border-color: var(--color-on-primary);
}

.page-hero {
  padding-block: var(--space-8) var(--space-7);
  background: linear-gradient(180deg, var(--color-primary-soft), transparent);
}

.page-hero .lead {
  max-width: 48rem;
  margin-bottom: 0;
}

.direction + .direction {
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.service-card h3 {
  margin-bottom: var(--space-4);
}

.service-card dl,
.product-card dl {
  margin: 0;
}

.service-card dt,
.product-card dt {
  margin-top: var(--space-4);
  color: var(--color-text);
  font-weight: 700;
}

.service-card dd,
.product-card dd {
  margin: var(--space-1) 0 0;
  color: var(--color-muted);
}

.notice {
  margin-top: var(--space-6);
  border-left: 4px solid var(--color-primary);
}

.notice strong {
  display: block;
  margin-bottom: var(--space-2);
}

.product-card {
  display: grid;
  gap: var(--space-5);
}

.product-card h2 {
  margin-bottom: var(--space-2);
}

.product-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.status {
  display: inline-flex;
  padding: var(--space-1) var(--space-3);
  color: var(--color-success);
  background: var(--color-primary-soft);
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  font-weight: 700;
}

.status-progress {
  color: var(--color-warning);
}

.price {
  color: var(--color-primary);
  font-size: var(--text-xl);
  font-weight: 800;
}

.contact-panel {
  max-width: 44rem;
  padding: var(--space-7);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.phone-link {
  display: inline-block;
  margin-block: var(--space-3) var(--space-5);
  color: var(--color-primary);
  font-size: clamp(1.75rem, 8vw, 3rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
  user-select: text;
}

.legal {
  max-width: 50rem;
}

.legal h2 {
  margin-top: var(--space-7);
}

.legal h3 {
  margin-top: var(--space-5);
}

.legal li + li {
  margin-top: var(--space-2);
}

.effective-date {
  display: inline-block;
  margin-bottom: var(--space-6);
  padding: var(--space-2) var(--space-3);
  color: var(--color-muted);
  background: var(--color-surface-alt);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
}

.not-found {
  display: grid;
  min-height: 65vh;
  place-items: center;
  text-align: center;
}

.error-code {
  margin-bottom: 0;
  color: var(--color-primary);
  font-size: clamp(5rem, 25vw, 11rem);
  font-weight: 900;
  line-height: 1;
  opacity: 0.18;
}

.site-footer {
  padding-block: var(--space-7);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  display: grid;
  gap: var(--space-5);
}

.footer-links,
.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  align-items: center;
}

.footer-links a,
.footer-meta,
.footer-meta a {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.footer-links a:hover,
.footer-meta a:hover {
  color: var(--color-primary);
}

@media (max-width: 639px) {
  .js .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .js .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-4) 1rem;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
  }

  .js .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: var(--space-3) var(--space-4);
  }

  .hero-actions .button,
  .cta-actions .button {
    width: 100%;
  }
}

@media (min-width: 640px) {
  .container {
    width: min(100% - 3rem, var(--content-width));
  }

  .card-grid,
  .value-grid,
  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .product-card {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    padding: var(--space-6);
  }

  .cta {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: var(--space-7);
  }

  .footer-inner {
    grid-template-columns: 1fr auto;
  }

  .footer-meta {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1024px) {
  .hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(22rem, 0.9fr);
  }

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

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

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

  .steps li {
    padding: 4.25rem var(--space-5) var(--space-5);
  }

  .steps li::before {
    left: var(--space-5);
  }

  .feature-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}