/* ============================================================
   好活接单 - 官方网站
   暗黑科技极简风格 | 响应式 | 同城招工接单平台
   ============================================================ */

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161e;
  --bg-card-hover: #1c1c28;
  --text-primary: #ffffff;
  --text-secondary: #a0a0b8;
  --text-muted: #6b6b80;
  --accent: #ff6b2b;
  --accent-hover: #ff8150;
  --accent-glow: rgba(255, 107, 43, 0.15);
  --border: #1e1e2e;
  --border-light: #2a2a3a;
  --radius: 12px;
  --radius-lg: 20px;
  --max-width: 1200px;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* === grid background texture === */
body::before {
  content: "";
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ==================== NAV ==================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  background: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.nav-links a:hover { color: var(--text-primary); }

.nav-cta {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-block;
}

.nav-cta:hover { background: var(--accent-hover); box-shadow: 0 0 24px var(--accent-glow); }

/* mobile menu */
.menu-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; }

/* ==================== HERO ==================== */
.hero {
  position: relative;
  z-index: 1;
  padding: 160px 24px 120px;
  text-align: center;
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  background: var(--accent-glow);
  border: 1px solid rgba(255,107,43,0.25);
  color: var(--accent);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

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

.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 14px 36px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 0 32px var(--accent-glow); transform: translateY(-1px); }

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
  padding: 14px 36px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-outline:hover { border-color: var(--text-secondary); background: rgba(255,255,255,0.03); }

/* ==================== SECTION COMMON ==================== */
.section {
  position: relative;
  z-index: 1;
  padding: 100px 24px;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 640px;
  line-height: 1.8;
  margin-bottom: 48px;
}

/* ==================== INTRO ==================== */
.intro {
  background: var(--bg-secondary);
}

.intro .section-desc {
  max-width: 800px;
}

/* ==================== CARDS ==================== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}

.card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.card-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.tag {
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: 6px;
  background: rgba(255,255,255,0.05);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.tag.accent {
  background: var(--accent-glow);
  color: var(--accent);
  border-color: rgba(255,107,43,0.2);
}

/* ==================== STEPS ==================== */
.steps {
  background: var(--bg-primary);
}

.steps-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.step {
  text-align: center;
  padding: 28px 20px;
}

.step-num {
  width: 56px;
  height: 56px;
  background: var(--accent-glow);
  border: 1px solid rgba(255,107,43,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0 auto 20px;
}

.step h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.step p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* ==================== ADVANTAGES ==================== */
.advantages {
  background: var(--bg-secondary);
}

.adv-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 16px;
}

.adv-item {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.adv-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--accent-glow);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.adv-content h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 4px; }
.adv-content p { color: var(--text-secondary); font-size: 0.85rem; line-height: 1.6; }

/* ==================== ABOUT ==================== */
.about {
  background: var(--bg-primary);
}

.about .section-desc {
  max-width: 860px;
}

/* ==================== MISSION ==================== */
.mission {
  background: var(--bg-secondary);
  text-align: center;
}

.mission-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  max-width: 800px;
  margin: 0 auto;
}

.mission-box p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.9;
}

/* ==================== FOOTER ==================== */
.footer {
  position: relative;
  z-index: 1;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 40px 24px;
  text-align: center;
}

.footer p {
  color: var(--text-muted);
  font-size: 0.8rem;
  line-height: 1.8;
  max-width: 700px;
  margin: 0 auto;
}

/* ==================== WECHAT REVIEW ==================== */
.wechat-review {
  position: relative;
  z-index: 1;
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  padding: 32px 24px 48px;
  text-align: center;
}

.wechat-review-inner {
  max-width: 700px;
  margin: 0 auto;
}

.wechat-review-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.wechat-review p {
  color: var(--text-muted);
  font-size: 0.78rem;
  line-height: 1.8;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .menu-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: rgba(10,10,15,0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
  }

  .hero { padding: 120px 20px 80px; }

  .steps-row { grid-template-columns: repeat(2, 1fr); }
  .cards-grid { grid-template-columns: 1fr; }
  .adv-list { grid-template-columns: 1fr; }

  .section { padding: 64px 20px; }
}

@media (max-width: 480px) {
  .steps-row { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.8rem; }
  .hero-btns { flex-direction: column; align-items: center; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
}