/* 企业官网 — 纯静态响应式样式 */

:root {
  --color-bg: #0f1419;
  --color-bg-alt: #151c24;
  --color-surface: #1a2332;
  --color-text: #e8eef4;
  --color-muted: #8fa3b8;
  --color-accent: #2dd4bf;
  --color-accent-dim: #1a5f7a;
  --font-sans: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --radius: 12px;
  --header-h: 64px;
  --max-w: 1080px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(15, 20, 25, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

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

.logo {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.logo:hover {
  color: var(--color-accent);
  text-decoration: none;
}

@media (max-width: 640px) {
  .logo {
    font-size: 0.8125rem;
    line-height: 1.25;
    max-width: calc(100% - 52px);
  }
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  margin: 0 auto;
}

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

.site-nav a {
  color: var(--color-muted);
  font-size: 0.9375rem;
  font-weight: 500;
}

.site-nav a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-sm);
    background: var(--color-bg-alt);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.25s ease, opacity 0.25s ease, visibility 0.25s;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav a {
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius);
  }

  .site-nav a:hover {
    background: var(--color-surface);
  }
}

/* Hero */
.hero {
  position: relative;
  padding: var(--space-xl) 0 calc(var(--space-xl) + var(--space-md));
  overflow: hidden;
}

.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.hero-tag {
  display: inline-block;
  margin: 0 0 var(--space-sm);
  padding: 0.35em 0.85em;
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  border: 1px solid rgba(45, 212, 191, 0.35);
  border-radius: 999px;
}

.hero h1 {
  margin: 0 0 var(--space-sm);
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.2;
}

.hero-lead {
  margin: 0 0 var(--space-lg);
  color: var(--color-muted);
  font-size: 1.0625rem;
}

.hero-decoration {
  position: absolute;
  inset: 20% -20% auto;
  height: 280px;
  background: radial-gradient(ellipse at center, rgba(26, 95, 122, 0.45) 0%, transparent 70%);
  pointer-events: none;
}

.btn {
  display: inline-block;
  padding: 0.75em 1.75em;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 0;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
}

.btn-primary {
  background: var(--color-accent);
  color: #0a1218;
}

.btn-primary:hover {
  background: #5eead4;
  text-decoration: none;
  transform: translateY(-1px);
}

/* Sections */
.section {
  padding: var(--space-xl) 0;
}

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

.section-title {
  margin: 0 0 var(--space-md);
  font-size: clamp(1.35rem, 3vw, 1.65rem);
  font-weight: 700;
  text-align: center;
}

.section-intro {
  margin: 0 auto var(--space-lg);
  max-width: 720px;
  text-align: center;
  color: var(--color-muted);
}

.section-intro strong {
  color: var(--color-text);
  font-weight: 600;
}

.scope-permit {
  max-width: 720px;
  margin: 0 auto var(--space-lg);
  padding: var(--space-md);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-muted);
  background: rgba(26, 95, 122, 0.2);
  border-radius: var(--radius);
  border: 1px solid rgba(45, 212, 191, 0.2);
}

.scope-permit strong {
  color: var(--color-text);
}

/* Features */
.feature-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-md);
}

.feature-card {
  margin: 0;
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.feature-icon {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--color-accent);
  font-size: 1.25rem;
}

.feature-card h3 {
  margin: 0 0 var(--space-xs);
  font-size: 1.0625rem;
}

.feature-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-muted);
}

/* Business */
.business-list {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 700px) {
  .business-list:not(.business-list-wide) {
    grid-template-columns: repeat(3, 1fr);
  }
}

.business-list-wide {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.business-item {
  margin: 0;
  padding: var(--space-md);
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.business-item h3 {
  margin: 0 0 var(--space-xs);
  font-size: 1rem;
  color: var(--color-accent);
}

.business-item p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-muted);
}

/* Compliance */
.compliance-box {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent-dim);
}

.compliance-box p {
  margin: 0 0 var(--space-md);
  color: var(--color-muted);
  font-size: 0.9375rem;
}

.compliance-box p:last-child {
  margin-bottom: 0;
}

/* 休闲亮点（配图区） */
.leisure-showcase {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .leisure-showcase {
    grid-template-columns: repeat(3, 1fr);
  }
}

.leisure-card {
  margin: 0;
  padding: var(--space-md);
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
}

.leisure-visual {
  margin: 0 auto var(--space-sm);
  width: 120px;
  height: 120px;
}

.leisure-visual img {
  display: block;
  width: 120px;
  height: 120px;
}

.leisure-card h3 {
  margin: 0 0 var(--space-xs);
  font-size: 1.0625rem;
  color: var(--color-text);
}

.leisure-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.6;
  text-align: left;
}

.leisure-banner {
  margin-top: var(--space-lg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.leisure-banner-svg {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}

.mono {
  font-family: ui-monospace, "Cascadia Mono", "Segoe UI Mono", Consolas, monospace;
  font-size: 0.9em;
  word-break: break-all;
}

/* Footer */
.site-footer {
  padding: var(--space-lg) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: var(--color-bg);
}

.footer-inner {
  text-align: center;
}

.footer-copy {
  margin: 0 0 var(--space-xs);
  font-size: 0.875rem;
  color: var(--color-muted);
}

.footer-meta {
  margin: 0.35rem 0 0;
  font-size: 0.8125rem;
  color: var(--color-muted);
  line-height: 1.55;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

.footer-icp {
  margin: var(--space-sm) 0 0;
  font-size: 0.8125rem;
}

.footer-icp a {
  color: var(--color-muted);
}

.footer-icp a:hover {
  color: var(--color-accent);
}