:root {
  --qq-blue: #12b7f5;
  --qq-blue-dark: #0a9ad4;
  --qq-blue-light: #e8f7fe;
  --text-primary: #1a1a2e;
  --text-secondary: #5c5c7a;
  --text-muted: #8b8ba3;
  --bg: #f0f7fc;
  --card: #ffffff;
  --shadow: 0 4px 24px rgba(18, 183, 245, 0.12);
  --shadow-lg: 0 12px 48px rgba(18, 183, 245, 0.18);
  --radius: 16px;
  --radius-sm: 10px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
}

.bg-pattern {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(18, 183, 245, 0.25), transparent),
    radial-gradient(ellipse 60% 40% at 100% 100%, rgba(18, 183, 245, 0.1), transparent),
    var(--bg);
  pointer-events: none;
}

.page {
  position: relative;
  z-index: 1;
  max-width: 520px;
  margin: 0 auto;
  padding: 24px 20px calc(32px + var(--safe-bottom));
}

header {
  text-align: center;
  padding: 32px 0 28px;
}

.logo {
  width: 88px;
  height: 88px;
  margin: 0 auto 20px;
  background: #fff;
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  border: 2px solid rgba(18, 183, 245, 0.2);
}

.logo img {
  width: 64px;
  height: 64px;
  display: block;
  object-fit: contain;
}

h1 {
  font-size: clamp(1.5rem, 5vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 340px;
  margin: 0 auto;
}

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--qq-blue-dark);
  background: var(--qq-blue-light);
  border: 1px solid rgba(18, 183, 245, 0.35);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

/* ---------- 业务介绍区块 ---------- */

.card-business {
  background: linear-gradient(180deg, #fff 0%, #f8fcff 100%);
  border: 1px solid rgba(18, 183, 245, 0.12);
}

.business-hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px dashed rgba(18, 183, 245, 0.25);
}

.business-hero-text h2 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.business-slogan {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.business-hero-icon {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  background: var(--qq-blue-light);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.business-hero-icon svg {
  width: 56px;
  height: 56px;
}

.highlights {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.highlights li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  background: var(--qq-blue-light);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
}

.highlight-icon {
  font-size: 1.25rem;
  line-height: 1;
  flex-shrink: 0;
}

.highlights li strong {
  display: block;
  font-size: 0.92rem;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.highlights li span {
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.section-subtitle {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.user-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.user-tag {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--qq-blue-dark);
  background: #fff;
  border: 1px solid rgba(18, 183, 245, 0.35);
  padding: 8px 14px;
  border-radius: 999px;
}

.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 24px;
}

.service-item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 12px;
  background: #fff;
  border: 1px solid rgba(18, 183, 245, 0.2);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.service-item.featured {
  border-color: var(--qq-blue);
  background: linear-gradient(145deg, #f0faff, #fff);
  box-shadow: 0 2px 12px rgba(18, 183, 245, 0.15);
}

.service-tag {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 0.65rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(145deg, #ff8a3d, #f05a28);
  padding: 2px 6px;
  border-radius: 4px;
}

.service-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  padding-right: 28px;
}

.service-item:not(.featured) .service-name {
  padding-right: 0;
}

.service-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.service-price {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--qq-blue-dark);
  margin-top: 4px;
}

.flow-steps {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 20px;
}

.flow-steps li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(18, 183, 245, 0.1);
  font-size: 0.88rem;
}

.flow-steps li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.flow-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: linear-gradient(145deg, var(--qq-blue), var(--qq-blue-dark));
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flow-steps li strong {
  display: block;
  font-size: 0.92rem;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.flow-steps li span {
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.business-bridge {
  text-align: center;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--qq-blue-dark);
  background: var(--qq-blue-light);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  margin: 0;
}

.card-contact {
  border: 2px solid rgba(18, 183, 245, 0.35);
  box-shadow: var(--shadow-lg);
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 24px;
  margin-bottom: 20px;
}

.card-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.qq-number-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--qq-blue-light);
  border: 2px solid rgba(18, 183, 245, 0.25);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  margin-bottom: 20px;
}

.qq-number {
  font-size: clamp(1.5rem, 6vw, 1.85rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  color: var(--qq-blue-dark);
  word-break: break-all;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px 20px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(145deg, var(--qq-blue), var(--qq-blue-dark));
  color: #fff;
  box-shadow: 0 4px 16px rgba(18, 183, 245, 0.35);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(18, 183, 245, 0.45);
}

.card .btn + .btn {
  margin-top: 12px;
}

.btn-outline,
.btn-secondary {
  background: var(--card);
  color: var(--qq-blue-dark);
  border: 2px solid var(--qq-blue);
}

.btn-outline:hover,
.btn-secondary:hover {
  background: var(--qq-blue-light);
}

.btn-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  padding: 0;
  border-radius: 10px;
  background: var(--qq-blue);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, transform 0.15s ease;
}

.btn-icon:hover {
  background: var(--qq-blue-dark);
}

.btn-icon svg {
  width: 20px;
  height: 20px;
}

.steps-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 18px;
}

.steps {
  list-style: none;
  counter-reset: step;
}

.steps li {
  position: relative;
  padding-left: 44px;
  padding-bottom: 20px;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.steps li:last-child {
  padding-bottom: 0;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 2px;
  width: 28px;
  height: 28px;
  background: var(--qq-blue-light);
  color: var(--qq-blue-dark);
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.steps li strong {
  color: var(--text-primary);
  font-weight: 600;
}

.tips {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
  padding: 8px 0 0;
}

.toast {
  position: fixed;
  bottom: calc(24px + var(--safe-bottom));
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--text-primary);
  color: #fff;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transition: transform 0.3s ease, opacity 0.3s ease;
  z-index: 100;
  white-space: nowrap;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

footer {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding-top: 8px;
}

@media (min-width: 480px) {
  .page {
    padding-top: 48px;
  }

  header {
    padding-bottom: 36px;
  }

  .card {
    padding: 32px 28px;
  }
}