/* 简单互动 · 泰格科技 — 工业简约风，无大图依赖 */

:root {
  --color-bg: #fafafa;
  --color-bg-alt: #f0eeeb;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #5c5c5c;
  --color-accent: #c0502d;
  --color-accent-dark: #9a3f24;
  --color-wood: #d4b896;
  --color-border: #e0ddd8;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --header-h: 64px;
  --radius: 8px;
  --shadow: 0 2px 12px rgba(26, 26, 26, 0.06);
  --max-w: 1120px;
}

*,
*::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);
}

img {
  max-width: 100%;
  height: auto;
}

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

a:hover {
  color: var(--color-accent-dark);
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--color-text);
  text-decoration: none;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-text strong {
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

.brand-text small {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.site-nav {
  display: flex;
  gap: 1.5rem;
}

.site-nav a {
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border: none;
  background: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  transition: transform 0.2s, opacity 0.2s;
}

/* Hero */
.hero {
  position: relative;
  padding: 4.5rem 0 3.5rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(192, 80, 45, 0.04) 0%, transparent 50%),
    repeating-linear-gradient(
      -45deg,
      transparent,
      transparent 8px,
      rgba(212, 184, 150, 0.08) 8px,
      rgba(212, 184, 150, 0.08) 9px
    );
  pointer-events: none;
}

.hero-inner {
  position: relative;
}

.hero-tag {
  display: inline-block;
  margin: 0 0 1rem;
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-accent);
  background: rgba(192, 80, 45, 0.08);
  border-radius: 999px;
  letter-spacing: 0.04em;
}

.hero h1 {
  margin: 0 0 1.25rem;
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.hero h1 .accent {
  color: var(--color-accent);
}

.hero-desc {
  max-width: 36rem;
  margin: 0 0 2rem;
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.4rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

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

.btn-block {
  width: 100%;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin: 0;
  padding: 1.25rem 0 0;
  list-style: none;
  border-top: 1px solid var(--color-border);
}

.hero-stats li {
  text-align: center;
}

.hero-stats strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.hero-stats span {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Sections */
.section {
  padding: 4rem 0;
}

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

.section-head {
  margin-bottom: 2.5rem;
}

.section-head-light h2,
.section-head-light .section-label {
  color: #fff;
}

.section-label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
}

.section-sub {
  margin: 0.5rem 0 0;
  color: var(--color-text-muted);
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr min(320px, 100%);
  gap: 2rem;
  align-items: start;
}

.about-copy p {
  margin: 0 0 1rem;
  color: var(--color-text-muted);
}

.about-copy p:last-child {
  margin-bottom: 0;
}

.about-card {
  padding: 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.about-card h3 {
  margin: 0 0 1rem;
  font-size: 1rem;
}

.about-card dl {
  margin: 0;
}

.about-card dl div {
  display: grid;
  grid-template-columns: 5.5em 1fr;
  gap: 0.5rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.about-card dl div:last-child {
  border-bottom: none;
}

.about-card dt {
  color: var(--color-text-muted);
  font-weight: 500;
}

.about-card dd {
  margin: 0;
}

/* Cards */
.card-grid {
  display: grid;
  gap: 1.5rem;
}

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

.feature-card,
.job-card {
  padding: 1.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: 1rem;
  color: var(--color-accent);
  background: rgba(192, 80, 45, 0.08);
  border-radius: var(--radius);
}

.feature-card h3,
.job-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
}

.feature-card p {
  margin: 0 0 1rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.feature-card ul,
.job-card ul {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.feature-card li + li,
.job-card li + li {
  margin-top: 0.35rem;
}

.flow-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 0.25rem;
  margin-top: 2rem;
  padding: 1rem 1.25rem;
  background: var(--color-surface);
  border: 1px dashed var(--color-wood);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
}

.flow-arrow {
  color: var(--color-accent);
  font-weight: 700;
}

/* Stats */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  padding: 1.5rem 1rem;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
}

.stat-unit {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.stat-card p {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.value-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.value-list li {
  padding: 1.25rem;
  background: var(--color-surface);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.value-list strong {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--color-text);
}

/* Partner */
.partner-highlight {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  padding: 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.partner-highlight h3 {
  margin: 0 0 0.75rem;
  font-size: 1.2rem;
}

.partner-highlight p {
  margin: 0;
  color: var(--color-text-muted);
}

/* Careers */
.job-meta {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
}

.job-meta h4 {
  margin: 0 0 0.35rem;
  font-size: 0.9rem;
}

.job-meta p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.careers-note {
  margin: 1.5rem 0 0;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* Contact */
.section-contact {
  background: linear-gradient(160deg, #1a1a1a 0%, #2d2420 100%);
  color: #e8e8e8;
}

.contact-info {
  max-width: 32rem;
}

.contact-company {
  margin: 0 0 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
}

address {
  font-style: normal;
  line-height: 1.8;
  margin-bottom: 1rem;
}

.contact-hint {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
}

/* Footer */
.site-footer {
  padding: 1.5rem 0;
  background: #111;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.85rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.8);
}

.footer-copy {
  margin: 0;
}

/* Responsive */
@media (max-width: 900px) {
  .about-grid,
  .card-grid-2,
  .value-list {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s, opacity 0.25s;
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav a {
    padding: 0.85rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
  }

  .partner-highlight {
    flex-direction: column;
  }

  .flow-strip {
    font-size: 0.8rem;
  }
}