/* 清爽增强：图标、页脚、轻动效（避免过重装饰） */

.ui-icon {
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

.ui-icon--md {
  width: 1.35rem;
  height: 1.35rem;
}

.card__icon .ui-icon {
  width: 1.4rem;
  height: 1.4rem;
}

.site-header {
  transition: box-shadow 0.25s ease, background 0.25s ease;
}

.site-header.is-scrolled {
  background: rgba(252, 253, 255, 0.97);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.95) inset,
    0 6px 24px rgba(15, 28, 48, 0.08);
}

.hero__eyebrow {
  margin: 0 0 0.65rem;
}

/* 概览：免费标志（醒目但不抢眼） */
.hero__brand-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1rem;
  margin-bottom: var(--space-3);
}

.hero__brand-row h1 {
  margin: 0;
}

.hero-free-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.9rem 0.4rem 0.7rem;
  font-size: 0.8125rem;
  font-weight: 650;
  line-height: 1.2;
  letter-spacing: 0.03em;
  color: #1a6b52;
  text-decoration: none;
  border-radius: 999px;
  background: linear-gradient(
    135deg,
    rgba(var(--success-rgb), 0.12) 0%,
    rgba(var(--accent-teal-rgb), 0.1) 100%
  );
  border: 1px solid rgba(var(--accent-teal-rgb), 0.35);
  box-shadow: 0 1px 2px rgba(15, 32, 52, 0.05);
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.hero-free-badge .ui-icon {
  width: 1.05rem;
  height: 1.05rem;
  color: #2a8f7a;
}

.hero-free-badge:hover {
  text-decoration: none;
  color: #145c4a;
  background: linear-gradient(
    135deg,
    rgba(var(--success-rgb), 0.18) 0%,
    rgba(var(--accent-teal-rgb), 0.14) 100%
  );
  border-color: rgba(var(--accent-teal-rgb), 0.48);
  box-shadow: 0 2px 8px rgba(var(--accent-teal-rgb), 0.12);
}

.hero-free-badge:focus-visible {
  outline: 2px solid var(--accent-teal);
  outline-offset: 2px;
}

@media (max-width: 520px) {
  .hero-free-badge {
    font-size: 0.78rem;
    padding: 0.34rem 0.75rem 0.34rem 0.6rem;
  }
}

.service-block__title {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.55rem;
  font-size: 1rem;
  font-weight: 650;
  color: var(--text-heading);
  line-height: 1.35;
}

.service-block__title .ui-icon {
  color: var(--accent);
  opacity: 0.92;
}

.scenario__title {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.35rem;
}

.scenario__title .ui-icon {
  color: var(--accent-bright);
}

.scenario__title strong {
  display: inline;
  margin: 0;
  font-size: 0.98rem;
}

.contact-card__label-inner {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
}

.contact-card__label .ui-icon {
  color: var(--accent);
  opacity: 0.85;
}

@media (min-width: 521px) {
  .contact-card__label-inner {
    justify-content: flex-end;
  }
}

.back-to-top-fab {
  position: fixed;
  right: max(1rem, env(safe-area-inset-right, 0px));
  bottom: max(1rem, env(safe-area-inset-bottom, 0px));
  z-index: 90;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid rgba(var(--accent-rgb), 0.18);
  border-radius: 999px;
  background: #fff;
  color: var(--accent);
  box-shadow: 0 4px 16px rgba(15, 32, 52, 0.1);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s,
    background 0.15s ease, color 0.15s ease;
}

.back-to-top-fab.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top-fab:hover {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

.back-to-top-fab:focus-visible {
  outline: 2px solid var(--accent-bright);
  outline-offset: 2px;
}

.site-footer__cols--clean {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem 2rem;
}

.footer-col--intro .footer-col__title {
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-transform: none;
}

.footer-col__lead {
  margin: 0 0 0.75rem;
  font-size: 0.86rem;
  line-height: 1.55;
  color: var(--text-muted);
  max-width: 20rem;
}

.footer-quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.footer-quick-links a {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 999px;
  border: 1px solid rgba(var(--accent-rgb), 0.16);
  background: rgba(255, 255, 255, 0.65);
  color: var(--accent);
  transition: background 0.15s ease, border-color 0.15s ease;
}

.footer-quick-links a:hover {
  background: #fff;
  border-color: rgba(var(--accent-rgb), 0.28);
}

.footer-quick-links a.is-primary {
  color: #fff;
  border-color: transparent;
  background: var(--accent);
}

.footer-quick-links a.is-primary:hover {
  background: var(--accent-bright);
}

@media (max-width: 720px) {
  .site-footer__cols--clean {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-header,
  .back-to-top-fab {
    transition: none;
  }
}