/* ============================================
 * 啄木鸟家庭维修 - Modern Design System v3
 * 彻底重写 | May 12, 2026
 * ============================================ */

/* === CSS Variables === */
:root {
  --orange: #f97316;
  --orange-dark: #ea580c;
  --orange-light: #fff7ed;
  --orange-ghost: #ffedd5;
  --teal: #0d9488;
  --teal-dark: #0f766e;
  --slate: #0f172a;
  --slate-light: #1e293b;
  --slate-mid: #334155;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --white: #ffffff;
  --gold: #f59e0b;
  --green: #10b981;
  --red: #ef4444;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--gray-800);
  background: var(--gray-50);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: var(--orange); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--orange-dark); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
input, button, textarea, select { font-family: inherit; font-size: inherit; }
button { cursor: pointer; border: none; }

/* === Container === */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
@media (max-width: 640px) { .container { padding: 0 16px; } }

/* === Top Bar === */
.top-bar {
  background: var(--slate);
  color: rgba(255,255,255,0.85);
  font-size: 0.8rem;
  padding: 8px 0;
  letter-spacing: 0.01em;
}
.top-bar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.top-bar a { color: rgba(255,255,255,0.85); }
.top-bar a:hover { color: var(--white); }
.city-switch { display: flex; align-items: center; gap: 6px; }
.city-switch span { opacity: 0.7; }
.city-switch select {
  background: rgba(255,255,255,0.12);
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.8rem;
  outline: none;
}
.city-switch select:focus { border-color: var(--orange); }
.city-switch select option { color: var(--slate); }
.top-bar .hotline { font-weight: 600; color: var(--orange-light); }

/* === Header === */
.site-header {
  background: var(--white);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.03);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}
.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 68px;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-img { height: 38px; }
.logo-text {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--slate);
  letter-spacing: -0.02em;
}
.logo-text .accent {
  color: var(--orange);
  position: relative;
}
.logo-text .accent::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--orange);
  opacity: 0.2;
  border-radius: 2px;
}

/* === Navigation === */
.main-nav { display: flex; gap: 2px; }
.main-nav a {
  display: flex;
  align-items: center;
  padding: 8px 15px;
  color: var(--gray-600);
  font-weight: 500;
  font-size: 0.9rem;
  border-radius: var(--radius);
  transition: var(--transition);
}
.main-nav a:hover { color: var(--orange); background: var(--orange-light); }
.main-nav a.active { color: var(--orange); background: var(--orange-light); font-weight: 600; }

.nav-toggle { display: none; background: none; font-size: 1.6rem; color: var(--slate); padding: 6px; }
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    padding: 8px;
    border-top: 1px solid var(--gray-200);
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 14px 16px; border-radius: var(--radius-sm); }
}

/* === City Indicator === */
.city-indicator {
  background: var(--orange-light);
  color: var(--orange-dark);
  text-align: center;
  padding: 6px 12px;
  font-size: 0.8rem;
  border-bottom: 1px solid var(--orange-ghost);
}
.city-indicator a { color: var(--orange); font-weight: 500; margin-left: 4px; }

/* === Hero === */
.hero {
  background: linear-gradient(160deg, #0f172a 0%, #1e293b 40%, #f97316 100%);
  color: var(--white);
  padding: 80px 0 70px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(249,115,22,0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 30%, rgba(13,148,136,0.1) 0%, transparent 50%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--gray-50), transparent);
}
.hero-content { position: relative; z-index: 1; }
.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}
.hero-title .highlight {
  background: linear-gradient(135deg, #fb923c, #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 1.15rem;
  opacity: 0.8;
  margin-bottom: 36px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.hero-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.hero-trust { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; }
.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  opacity: 0.75;
}
.trust-icon { font-size: 1.1rem; }

/* === Buttons === */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: linear-gradient(135deg, #f97316, #ea580c);
  color: var(--white);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  box-shadow: 0 4px 14px rgba(249,115,22,0.35);
  transition: all var(--transition);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(249,115,22,0.45); color: var(--white); }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(8px);
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition);
}
.btn-secondary:hover { background: rgba(255,255,255,0.2); color: var(--white); }
.btn-large { padding: 16px 32px; font-size: 1.05rem; }
.btn-sm { padding: 8px 16px; font-size: 0.85rem; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--gray-700);
  background: var(--white);
  transition: var(--transition);
}
.btn-outline:hover { border-color: var(--orange); color: var(--orange); }

/* === Trust Bar === */
.trust-bar {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding: 32px 0;
}
.trust-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  text-align: center;
}
.trust-stat { padding: 12px; }
.stat-num {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--orange);
  line-height: 1;
  letter-spacing: -0.02em;
}
.stat-unit { font-size: 1rem; font-weight: 600; color: var(--orange-dark); }
.stat-label { display: block; font-size: 0.88rem; color: var(--gray-500); margin-top: 6px; }
@media (max-width: 640px) {
  .trust-stats { grid-template-columns: repeat(2, 1fr); }
  .stat-num { font-size: 2rem; }
}

/* === Section === */
.section { padding: 60px 0; }
.section-header { text-align: center; margin-bottom: 40px; }
.section-title {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--slate);
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}
.section-subtitle { font-size: 1rem; color: var(--gray-500); }
.section-header-left { text-align: left; }
@media (max-width: 640px) { .section { padding: 40px 0; } .section-title { font-size: 1.4rem; } }

/* === Service Cards Grid === */
.services-section { padding: 60px 0; }
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
  cursor: pointer;
  text-decoration: none;
  color: var(--gray-800);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--gold));
  opacity: 0;
  transition: opacity var(--transition);
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--orange-ghost);
}
.service-card:hover::before { opacity: 1; }
.service-card:hover .service-icon { transform: scale(1.1); }
.service-icon {
  font-size: 2.6rem;
  transition: transform var(--transition);
  display: block;
}
.service-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--slate);
}
.service-desc {
  font-size: 0.8rem;
  color: var(--gray-400);
}
@media (max-width: 480px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .service-card { padding: 18px 10px; }
  .service-icon { font-size: 2rem; }
  .service-title { font-size: 0.8rem; }
}

/* === Hot Services === */
.hot-section { padding: 0 0 60px; }
.hot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.hot-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  text-decoration: none;
  color: inherit;
  display: block;
}
.hot-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.hot-thumb {
  height: 180px;
  background: var(--gray-200);
  overflow: hidden;
}
.hot-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.hot-card:hover .hot-thumb img { transform: scale(1.05); }
.hot-info { padding: 16px; }
.hot-info h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--slate);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
  min-height: 3em;
  margin-bottom: 8px;
}
.hot-views { font-size: 0.8rem; color: var(--gray-400); }

/* === Knowledge === */
.knowledge-section { padding: 0 0 60px; }
.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 16px;
}
.knowledge-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-left: 4px solid transparent;
}
.knowledge-card:hover {
  border-left-color: var(--orange);
  box-shadow: var(--shadow-md);
}
.knowledge-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--slate);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.knowledge-card p {
  font-size: 0.88rem;
  color: var(--gray-500);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.6;
}
@media (max-width: 640px) { .knowledge-grid { grid-template-columns: 1fr; } }

/* === Testimonials === */
.testimonials-section { padding: 60px 0; background: var(--white); border-top: 1px solid var(--gray-200); border-bottom: 1px solid var(--gray-200); }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.testimonial-card {
  background: var(--gray-50);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
}
.testimonial-card:hover { border-color: var(--orange-ghost); box-shadow: var(--shadow); }
.testimonial-stars { font-size: 1rem; margin-bottom: 10px; }
.testimonial-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--slate);
  margin-bottom: 8px;
}
.testimonial-card p {
  font-size: 0.85rem;
  color: var(--gray-500);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.6;
}

/* === CTA === */
.cta-section { padding: 56px 0 72px; }
.cta-box {
  background: linear-gradient(135deg, var(--slate) 0%, var(--slate-light) 100%);
  border-radius: var(--radius-xl);
  padding: 56px 40px;
  text-align: center;
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(249,115,22,0.12) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(13,148,136,0.08) 0%, transparent 50%);
}
.cta-box > * { position: relative; z-index: 1; }
.cta-box h2 { font-size: 2rem; font-weight: 800; margin-bottom: 8px; letter-spacing: -0.02em; }
.cta-box p { font-size: 1.05rem; opacity: 0.7; margin-bottom: 28px; }
.cta-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* === Footer === */
.site-footer { background: var(--slate); color: var(--gray-300); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 36px; margin-bottom: 40px; }
.footer-col h4 { color: var(--white); font-weight: 700; font-size: 0.95rem; margin-bottom: 16px; letter-spacing: 0.01em; }
.footer-col ul li { padding: 6px 0; }
.footer-col ul li a { color: var(--gray-400); font-size: 0.88rem; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--orange); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 0.82rem;
  color: var(--gray-500);
}

/* === Breadcrumb === */
.breadcrumb { padding: 12px 0; font-size: 0.85rem; }
.breadcrumb ol { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; list-style: none; margin: 0; padding: 0; }
.breadcrumb li { display: flex; align-items: center; }
.breadcrumb li + li::before { content: '/'; color: var(--gray-300); margin-right: 6px; font-size: .8rem; }
.breadcrumb a { color: var(--gray-500); }
.breadcrumb a:hover { color: var(--orange); }
.breadcrumb .active { color: var(--gray-700); font-weight: 500; }
.breadcrumb .sep { color: var(--gray-300); }
.breadcrumb .current { color: var(--gray-700); font-weight: 500; }

/* === Category Hero === */
.category-hero {
  background: linear-gradient(135deg, var(--orange-light) 0%, var(--orange-ghost) 100%);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  margin: 24px 0 32px;
  border: 1px solid var(--orange-ghost);
}
.category-hero h1 { font-size: 1.8rem; font-weight: 800; color: var(--slate); margin-bottom: 8px; }
.category-hero p { font-size: 1rem; color: var(--gray-500); }

/* === Article List (栏目页) === */
.article-list-item {
  display: flex;
  gap: 20px;
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
}
.article-list-item:hover { box-shadow: var(--shadow-md); border-color: var(--orange-ghost); }
.article-list-item .list-thumb {
  width: 220px;
  min-width: 220px;
  height: 150px;
  background: var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  flex-shrink: 0;
}
.article-list-item .list-thumb img { width: 100%; height: 100%; object-fit: cover; }
.article-list-item .list-body { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.article-list-item .list-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.article-list-item .list-title a { color: var(--slate); }
.article-list-item .list-title a:hover { color: var(--orange); }
.article-list-item .list-desc { font-size: 0.9rem; color: var(--gray-500); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.article-list-item .list-meta { font-size: 0.8rem; color: var(--gray-400); display: flex; gap: 16px; }
@media (max-width: 640px) {
  .article-list-item { flex-direction: column; }
  .article-list-item .list-thumb { width: 100%; min-width: auto; height: 200px; }
}

/* === Article Detail === */
.article-detail {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 28px;
  padding: 32px 0;
}
.article-main {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
}
.article-main h1.article-heading {
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 16px;
  color: var(--slate);
  letter-spacing: -0.02em;
}
.article-main .article-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--gray-400);
  font-size: 0.85rem;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--gray-200);
}
.article-main .article-body {
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--gray-700);
}
.article-main .article-body p { margin-bottom: 18px; }
.article-main .article-body h2 { font-size: 1.3rem; font-weight: 700; color: var(--slate); margin: 32px 0 14px; padding-bottom: 8px; border-bottom: 2px solid var(--orange-ghost); }
.article-main .article-body h3 { font-size: 1.1rem; font-weight: 600; color: var(--slate); margin: 24px 0 10px; }
.article-main .article-body ul, .article-main .article-body ol { padding-left: 24px; margin-bottom: 18px; }
.article-main .article-body ul { list-style: disc; }
.article-main .article-body ol { list-style: decimal; }
.article-main .article-body li { margin-bottom: 6px; }
.article-main .article-body img { border-radius: var(--radius); margin: 20px 0; }

.article-main .article-intro {
  background: var(--orange-light);
  padding: 18px 22px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  border-left: 4px solid var(--orange);
  font-weight: 500;
}
.article-main .article-tips {
  background: #fffbeb;
  padding: 18px 22px;
  border-radius: var(--radius);
  margin: 20px 0;
  border-left: 4px solid var(--gold);
}
.article-main .article-cta {
  background: linear-gradient(135deg, var(--slate), var(--slate-light));
  color: var(--white);
  padding: 24px;
  border-radius: var(--radius-lg);
  text-align: center;
  margin: 28px 0;
}
.article-main .article-cta .cta-phone { font-size: 1.6rem; font-weight: 700; margin-top: 10px; color: var(--orange); }
@media (max-width: 768px) {
  .article-detail { grid-template-columns: 1fr; }
  .article-main { padding: 24px 20px; }
  .article-main h1.article-heading { font-size: 1.4rem; }
}

/* === Sidebar === */
.sidebar-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 22px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
}
.sidebar-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--orange);
  color: var(--slate);
}
.sidebar-card ul li {
  padding: 9px 0;
  border-bottom: 1px solid var(--gray-100);
}
.sidebar-card ul li:last-child { border-bottom: none; }
.sidebar-card ul li a { color: var(--gray-700); font-size: 0.88rem; display: block; transition: var(--transition); }
.sidebar-card ul li a:hover { color: var(--orange); padding-left: 6px; }

/* === Hot Badge === */
.hot-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--orange), var(--orange-dark));
  color: var(--white);
  font-size: 0.7rem;
  padding: 2px 7px;
  border-radius: 3px;
  margin-right: 5px;
  vertical-align: middle;
  font-weight: 600;
}

/* === Pagination === */
.pagination { display: flex; gap: 6px; justify-content: center; margin: 32px 0; }
.pagination a, .pagination span {
  padding: 8px 14px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--gray-600);
  text-decoration: none;
  background: var(--white);
  transition: var(--transition);
}
.pagination a:hover { background: var(--orange); color: var(--white); border-color: var(--orange); }
.pagination .current { background: var(--orange); color: var(--white); border-color: var(--orange); font-weight: 600; }

/* === Empty State === */
.empty-state { text-align: center; padding: 60px 20px; }
.empty-icon { font-size: 3rem; margin-bottom: 16px; }
.empty-state p { font-size: 1rem; color: var(--gray-400); }

/* === Static Pages (About, Contact) === */
.about-page, .contact-page {
  max-width: 800px;
  margin: 40px auto;
  padding: 40px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
}
.about-page h1, .contact-page h1 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--slate);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--orange-ghost);
}
.about-page p, .contact-page p { font-size: 1rem; color: var(--gray-600); margin-bottom: 14px; line-height: 1.8; }
.contact-page strong { color: var(--orange); font-size: 1.2rem; }

/* === Search Page === */
.search-page { padding: 40px 0; }
.search-form {
  display: flex;
  gap: 10px;
  max-width: 560px;
  margin: 0 auto 32px;
}
.search-form input {
  flex: 1;
  padding: 14px 20px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
  background: var(--white);
}
.search-form input:focus { border-color: var(--orange); box-shadow: 0 0 0 3px rgba(249,115,22,0.1); }
.search-form button {
  padding: 14px 24px;
  background: var(--orange);
  color: var(--white);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
}
.search-form button:hover { background: var(--orange-dark); }
.search-empty { text-align: center; padding: 40px 0; }

/* === 404 Page === */
.page-404 {
  text-align: center;
  padding: 80px 20px;
  max-width: 500px;
  margin: 0 auto;
}
.page-404 h1 { font-size: 6rem; font-weight: 900; color: var(--orange); line-height: 1; margin-bottom: 16px; }
.page-404 p { font-size: 1.1rem; color: var(--gray-500); margin-bottom: 28px; }

/* === Q&A === */
.qa-filter { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.qa-filter a {
  padding: 7px 18px;
  border-radius: 50px;
  font-size: 0.88rem;
  background: var(--white);
  color: var(--gray-600);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}
.qa-filter a.active, .qa-filter a:hover { background: var(--orange); color: var(--white); border-color: var(--orange); }

.qa-list-item {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
}
.qa-list-item:hover { box-shadow: var(--shadow-md); border-color: var(--orange-ghost); }
.qa-list-item .qa-q { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 10px; }
.qa-list-item .qa-q .q-mark { color: var(--orange); font-weight: 700; font-size: 1.2rem; flex-shrink: 0; }
.qa-list-item .qa-q .q-title { font-size: 1.05rem; font-weight: 600; }
.qa-list-item .qa-q .q-title a { color: var(--slate); }
.qa-list-item .qa-q .q-title a:hover { color: var(--orange); }
.qa-list-item .qa-a-preview { color: var(--gray-500); font-size: 0.9rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; padding-left: 28px; }
.qa-list-item .qa-meta { display: flex; gap: 16px; font-size: 0.8rem; color: var(--gray-400); margin-top: 10px; padding-left: 28px; }

.qa-detail { max-width: 800px; margin: 0 auto; padding: 40px 0; }
.qa-detail .qa-main { background: var(--white); border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-sm); border: 1px solid var(--gray-100); }
.qa-detail-header { margin-bottom: 24px; padding-bottom: 20px; border-bottom: 1px solid var(--gray-200); }
.qa-detail-header h1 { font-size: 1.6rem; font-weight: 800; color: var(--slate); margin-bottom: 12px; }
.qa-detail-meta { display: flex; gap: 16px; font-size: 0.85rem; color: var(--gray-400); }
.qa-question-intro { background: var(--orange-light); padding: 18px 22px; border-radius: var(--radius); margin-bottom: 24px; border-left: 4px solid var(--orange); }
.qa-answer-label { display: inline-block; background: var(--teal); color: var(--white); padding: 4px 14px; border-radius: 50px; font-size: 0.8rem; font-weight: 600; margin-bottom: 16px; }

/* === Search Highlight === */
.search-highlight { background: #fef08a; padding: 1px 2px; border-radius: 2px; }

/* === Animations === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-content { animation: fadeInUp 0.6s ease-out; }
.service-card { animation: fadeInUp 0.5s ease-out; }
.service-card:nth-child(2) { animation-delay: 0.05s; }
.service-card:nth-child(3) { animation-delay: 0.1s; }
.service-card:nth-child(4) { animation-delay: 0.15s; }
.service-card:nth-child(5) { animation-delay: 0.2s; }

/* === Mobile adjustments — see comprehensive MOBILE RESPONSIVE SYSTEM block at end of file === *//* =============================================
 * SUPPLEMENT: Missing CSS classes for PHP templates
 * ============================================= */

/* --- Hero aliases (template uses hero-desc/hero-actions) --- */
.hero-desc { font-size: 1.15rem; opacity: 0.8; margin-bottom: 16px; max-width: 560px; margin-left: auto; margin-right: auto; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 20px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 900; line-height: 1.15; margin-bottom: 16px; letter-spacing: -0.03em; }

/* --- Service Categories --- */
.service-categories { padding: 60px 0; }
.service-categories .container h2 { text-align: center; margin-bottom: 8px; }
.category-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; margin-top: 28px; }
.cat-card { background: var(--white); border-radius: var(--radius-lg); padding: 28px 20px; text-align: center; box-shadow: var(--shadow-sm); border: 1px solid var(--gray-100); transition: all var(--transition); text-decoration: none; color: var(--gray-800); display: flex; flex-direction: column; align-items: center; gap: 10px; position: relative; overflow: hidden; }
.cat-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--orange), var(--gold)); opacity: 0; transition: opacity var(--transition); }
.cat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--orange-ghost); }
.cat-card:hover::before { opacity: 1; }
.cat-icon { font-size: 2.6rem; transition: transform var(--transition); }
.cat-card:hover .cat-icon { transform: scale(1.1); }
.cat-name { font-weight: 700; font-size: 0.95rem; color: var(--slate); }

/* --- Hot Articles --- */
.hot-articles { padding: 0 0 60px; }
.article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.article-card { background: var(--white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); transition: all var(--transition); text-decoration: none; color: inherit; display: block; }
.article-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.card-img { height: 180px; background: var(--gray-200); overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.article-card:hover .card-img img { transform: scale(1.05); }
.card-body { padding: 16px; }
.card-body h3 { font-size: 1rem; font-weight: 600; color: var(--slate); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.5; min-height: 3em; margin-bottom: 8px; }
.card-meta { font-size: 0.8rem; color: var(--gray-400); }

/* --- Knowledge Items --- */
.knowledge-item { background: var(--white); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-sm); border: 1px solid var(--gray-100); transition: all var(--transition); text-decoration: none; color: inherit; display: flex; flex-direction: column; gap: 8px; border-left: 4px solid transparent; }
.knowledge-item:hover { border-left-color: var(--orange); box-shadow: var(--shadow-md); }
.knowledge-item h4 { font-size: 1.05rem; font-weight: 600; color: var(--slate); }
.knowledge-item p { font-size: 0.88rem; color: var(--gray-500); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.6; }
.more-link { display: inline-flex; align-items: center; gap: 4px; color: var(--orange); font-weight: 500; font-size: 0.9rem; transition: var(--transition); }
.more-link:hover { gap: 8px; color: var(--orange-dark); }

/* --- Testimonials --- */
.testimonial-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.testimonial-text { font-size: 0.85rem; color: var(--gray-500); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.6; margin-bottom: 12px; }
.testimonial-author { font-size: 0.82rem; color: var(--gray-400); font-weight: 500; }

/* --- Q&A --- */
.qa-section { padding: 60px 0; }
.qa-item { background: var(--white); border-radius: var(--radius-lg); padding: 24px; margin-bottom: 16px; box-shadow: var(--shadow-sm); border: 1px solid var(--gray-100); transition: all var(--transition); }
.qa-item:hover { box-shadow: var(--shadow-md); border-color: var(--orange-ghost); }
.qa-q { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 10px; font-weight: 600; font-size: 1.05rem; color: var(--slate); }
.qa-q a { color: var(--slate); }
.qa-q a:hover { color: var(--orange); }
.qa-text { color: var(--gray-500); font-size: 0.9rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; padding-left: 28px; line-height: 1.6; }
.qa-views { font-size: 0.8rem; color: var(--gray-400); margin-top: 8px; padding-left: 28px; }

/* --- Section Utilities --- */
.section-header { margin-bottom: 32px; }
.bg-light { background: var(--gray-50); }

/* --- Stats Grid (admin) --- */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 28px; }
.stat-card { background: var(--white); border-radius: var(--radius-lg); padding: 22px 20px; box-shadow: var(--shadow-sm); border: 1px solid var(--gray-100); text-align: center; }
.stat-value { font-size: 2rem; font-weight: 900; color: var(--orange); line-height: 1; }
.stat-label { display: block; font-size: 0.85rem; color: var(--gray-500); margin-top: 6px; }

/* --- Alerts & Tags (admin) --- */
.alert { padding: 14px 20px; border-radius: var(--radius); margin-bottom: 16px; font-size: 0.9rem; }
.alert-success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.tag { display: inline-block; padding: 3px 10px; border-radius: 50px; font-size: 0.75rem; font-weight: 500; }
.tag-success { background: #d1fae5; color: #065f46; }
.tag-info { background: #dbeafe; color: #1e40af; }
.tag-warning { background: #fef3c7; color: #92400e; }

/* --- Admin Layout --- */
.admin-layout { display: flex; min-height: calc(100vh - 68px); }
.admin-sidebar { width: 240px; background: var(--slate); color: var(--white); padding: 24px 0; flex-shrink: 0; }
.admin-sidebar h3 { color: var(--gray-400); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; padding: 0 20px; margin: 20px 0 10px; }
.admin-sidebar a { display: block; padding: 10px 20px; color: var(--gray-300); font-size: 0.9rem; transition: var(--transition); }
.admin-sidebar a:hover, .admin-sidebar a.active { color: var(--white); background: rgba(249,115,22,0.15); border-left: 3px solid var(--orange); }
.admin-main { flex: 1; padding: 28px 32px; background: var(--gray-50); }
.admin-actions { display: flex; gap: 10px; margin-bottom: 20px; flex-wrap: wrap; }
.admin-table { width: 100%; background: var(--white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--gray-100); }
.admin-table table { width: 100%; border-collapse: collapse; }
.admin-table th { background: var(--gray-50); padding: 14px 16px; text-align: left; font-size: 0.82rem; font-weight: 600; color: var(--gray-600); border-bottom: 2px solid var(--gray-200); }
.admin-table td { padding: 12px 16px; border-bottom: 1px solid var(--gray-100); font-size: 0.88rem; }
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--orange-light); }

/* --- Login --- */
.login-box { max-width: 420px; margin: 80px auto; background: var(--white); border-radius: var(--radius-lg); padding: 40px; box-shadow: var(--shadow-lg); border: 1px solid var(--gray-100); }
.login-box h1 { font-size: 1.6rem; font-weight: 800; text-align: center; margin-bottom: 28px; color: var(--slate); }

/* --- Forms --- */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.88rem; font-weight: 600; color: var(--gray-700); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px 16px; border: 1.5px solid var(--gray-200); border-radius: var(--radius); font-size: 0.95rem; outline: none; transition: var(--transition); background: var(--white); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--orange); box-shadow: 0 0 0 3px rgba(249,115,22,0.1); }
.form-group textarea { min-height: 120px; resize: vertical; }

/* --- Misc --- */
.separator { height: 1px; background: var(--gray-200); margin: 28px 0; }
.footer-links { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }

/* category-grid mobile — see comprehensive MOBILE RESPONSIVE SYSTEM block at end of file */
/* 导航下拉菜单 */
.nav-dropdown { position: relative; display: inline-block; }
.nav-dropdown-menu { display: none; position: absolute; top: 100%; left: 0; min-width: 150px; background: #fff; box-shadow: 0 4px 12px rgba(0,0,0,0.15); border-radius: 8px; z-index: 100; padding: 8px 0; }
.nav-dropdown:hover .nav-dropdown-menu { display: block; }
.nav-dropdown-toggle { cursor: pointer; }
.nav-dropdown-menu a { display: block; padding: 8px 16px; color: #333; text-decoration: none; font-size: 0.9rem; white-space: nowrap; }
.nav-dropdown-menu a:hover { background: #f0f5ff; color: var(--primary,#1a73e8); }

/* 修复按钮和CTA */
.btn-primary {
  background: linear-gradient(135deg, #f97316, #ea580c) !important;
  color: #fff !important;
  border: none !important;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(249,115,22,0.35);
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(249,115,22,0.45);
}
.btn-outline {
  background: transparent !important;
  color: #fff !important;
  border: 2px solid rgba(255,255,255,0.6) !important;
}
.cta-section {
  background: linear-gradient(160deg, #0f172a 0%, #1e293b 60%, #f97316 100%) !important;
  color: #fff !important;
  text-align: center;
}
.cta-section h2 { color: #fff !important; }
.cta-section p { color: rgba(255,255,255,0.85) !important; }
.cta-section .btn-primary {
  display: inline-block !important;
  padding: 16px 36px !important;
  font-size: 1.15rem !important;
}

/* Hero增强 */
.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 50px;
  padding: 8px 24px;
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}
.hero h1 em {
  color: #f97316;
  font-style: normal;
}
.hero-desc {
  max-width: 640px;
  margin: 0 auto 28px;
  font-size: 1.1rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.85);
}
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.15);
}
.stat-item { text-align: center; }
.stat-num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: #f97316;
  line-height: 1.2;
}
.stat-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
}

/* 脉冲按钮 */
.btn-pulse {
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(249,115,22,0.5); }
  70% { box-shadow: 0 0 0 15px rgba(249,115,22,0); }
  100% { box-shadow: 0 0 0 0 rgba(249,115,22,0); }
}

/* 服务分类卡增强 */
.section-header {
  text-align: center;
  margin-bottom: 40px;
}
.section-subtitle {
  color: var(--text-muted, #64748b);
  font-size: 1rem;
  margin-top: 8px;
}
.cat-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: #fff;
  border-radius: 16px;
  padding: 24px 20px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: transform 0.25s, box-shadow 0.25s;
  text-decoration: none;
  color: inherit;
}
.cat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}
.cat-icon {
  font-size: 2rem;
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f0f5ff;
  border-radius: 14px;
}
.cat-info { flex: 1; }
.cat-name {
  display: block;
  font-weight: 700;
  font-size: 1.05rem;
  color: #1e293b;
}
.cat-desc {
  display: block;
  font-size: 0.85rem;
  color: #94a3b8;
  margin-top: 4px;
}

/* 文章卡片增强 */
.article-card {
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: transform 0.25s, box-shadow 0.25s;
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}
.article-card .card-img img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}
.article-card .card-body {
  padding: 16px;
}
.article-card h3 {
  font-size: 1rem;
  line-height: 1.5;
  color: #1e293b;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 问答增强 */
.qa-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: #f8fafc;
  border-radius: 12px;
  margin-bottom: 8px;
  text-decoration: none;
  color: inherit;
  transition: background 0.2s;
}
.qa-item:hover { background: #eef2ff; }
.qa-q {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: #f97316;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}
.qa-text { flex: 1; font-size: 0.95rem; }
.qa-views { font-size: 0.8rem; color: #94a3b8; flex-shrink: 0; }

/* 好评间距优化 */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.testimonial-card {
  background: #f8fafc;
  border-radius: 16px;
  padding: 28px 24px;
  border-left: 4px solid #f97316;
  transition: transform 0.2s;
}
.testimonial-card:hover { transform: translateY(-2px); }
.testimonial-text {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #475569;
  margin-bottom: 16px;
 
}
.testimonial-author {
  color: #94a3b8;
  font-size: 0.9rem;
  font-weight: 500;
}

/* 服务分类网格12项对称 */
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 900px) {
  .category-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 600px) {
  .category-grid { grid-template-columns: repeat(2, 1fr); }
}


.section-header { margin-bottom: 28px; }
.testimonials { padding: 40px 0; }

/* ── 右侧悬浮按钮 ── */
.float-btns {
  position: fixed; right: 20px; bottom: 80px; z-index: 999;
  display: flex; flex-direction: column; gap: 4px;
}
.float-btn {
  width: 48px; height: 48px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,.15);
  transition: transform .2s; cursor: pointer; position: relative;
  text-decoration: none; border: none;
}
.float-btn:hover { transform: scale(1.12); }

/* 在线客服 - 绿色 */
.float-kefu {
  background: #22c55e; color: #fff;
}
.float-chat-dot {
  position: absolute; top: 2px; right: 2px;
  width: 10px; height: 10px; background: #ef4444;
  border-radius: 50%;
  animation: dot-pulse 1.5s ease infinite;
}
@keyframes dot-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .3; }
}

/* 立即拨打 - 橙色扫光 */
.float-tel {
  background: linear-gradient(90deg, #f97316 0%, #f97316 35%, rgba(255,255,255,.25) 50%, #f97316 65%, #f97316 100%);
  background-size: 200% 100%;
  animation: btn-sweep 2.5s ease-in-out infinite;
  color: #fff;
}
@keyframes btn-sweep {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

/* 返回顶部 - 白色 */
.float-top {
  background: #fff; color: #64748b;
  border: 1px solid #e2e8f0; display: none;
}
.float-top:hover { color: #f97316; border-color: #f97316; }

/* 顶部标语 — 文字跳跃 */
.header-slogan-wrap {
  padding: 2px 0 0;
  text-align: center;
}
.header-slogan-text {
  display: inline-block;
  font-size: .82rem;
  color: #f97316;
  font-weight: 600;
  letter-spacing: 2px;
  animation: slogan-jump 0.6s ease-in-out infinite alternate;
}
@keyframes slogan-jump {
  0% { transform: translateY(0); }
  100% { transform: translateY(-3px); }
}

/* ═══════════════════════════════════════════════════════
   MOBILE RESPONSIVE SYSTEM — All devices
   Breakpoints: 768 (tablet) → 640 (large phone) → 480 (phone) → 360 (small phone)
   ═══════════════════════════════════════════════════════ */

/* ── Utility classes ── */
.bg-light { background: var(--gray-50); }
.city-services { padding: 48px 0; }

/* ══ TABLET 768px ══ */
@media (max-width: 768px) {
  /* Header & Nav */
  .site-header .container { flex-wrap: wrap; gap: 10px; }
  .site-logo { font-size: 1.1rem; }
  .site-logo img { height: 32px; }
  .header-slogan-wrap { display: none; }
  .nav-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute; top: 56px; left: 0; right: 0;
    background: #fff; box-shadow: 0 8px 24px rgba(0,0,0,.12);
    flex-direction: column; padding: 8px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 16px; border-radius: 8px; width: 100%; }

  /* Top bar */
  .top-bar .container { flex-direction: column; align-items: flex-start; gap: 6px; }
  .top-bar { font-size: .75rem; padding: 6px 0; }

  /* Hero */
  .hero { padding: 48px 0 40px; }
  .hero h1 { font-size: 2rem; }
  .hero-title { font-size: 1.6rem; }
  .hero-subtitle { font-size: .95rem; }
  .hero-desc { font-size: 1rem; max-width: 100%; padding: 0 8px; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .hero-buttons .btn-primary,
  .hero-buttons .btn-secondary { width: 100%; max-width: 320px; justify-content: center; }
  .hero-trust { gap: 10px; font-size: .78rem; }
  .hero-badge { font-size: .82rem; padding: 6px 16px; }
  .hero-stats { gap: 20px; flex-wrap: wrap; padding-top: 16px; margin-top: 24px; }
  .hero-stats .stat-item { flex: 0 0 calc(50% - 10px); }
  .stat-num { font-size: 1.6rem; }
  .stat-label { font-size: .78rem; }

  /* Trust bar */
  .trust-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .trust-stat { padding: 8px; }

  /* Sections */
  .section { padding: 36px 0; }
  .section-title { font-size: 1.3rem; }
  .section-header { margin-bottom: 24px; }

  /* Category grid */
  .category-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .cat-card { padding: 16px 14px; }
  .cat-icon { width: 44px; height: 44px; font-size: 1.5rem; }
  .cat-name { font-size: .9rem; }
  .cat-desc { font-size: .78rem; }

  /* Article grid */
  .article-grid { grid-template-columns: 1fr; gap: 12px; }
  .article-card .card-img img { height: 140px; }
  .article-card h3 { font-size: .95rem; }

  /* Knowledge */
  .knowledge-grid { grid-template-columns: 1fr; }

  /* Testimonials */
  .testimonial-grid { grid-template-columns: 1fr; gap: 14px; }
  .testimonial-card { padding: 20px 18px; }
  .testimonial-text { font-size: .95rem; line-height: 1.7; }

  /* CTA */
  .cta-section { padding: 36px 0 48px; }
  .cta-box { padding: 32px 20px; border-radius: 16px; }
  .cta-box h2 { font-size: 1.4rem; }
  .cta-box p { font-size: .9rem; }
  .cta-section .btn-primary { padding: 14px 24px; font-size: 1rem; }

  /* Footer */
  .site-footer { padding: 36px 0 0; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }

  /* Article detail */
  .article-detail { grid-template-columns: 1fr; }
  .article-main { padding: 20px 16px; }
  .article-main h1.article-heading { font-size: 1.3rem; }

  /* Article list */
  .article-list-item { flex-direction: column; }
  .article-list-item .list-thumb { width: 100%; min-width: auto; height: 180px; }

  /* Float buttons */
  .float-btns { right: 12px; bottom: 60px; gap: 3px; }
  .float-btn { width: 44px; height: 44px; }

  /* Q&A */
  .qa-detail .qa-main { padding: 24px 20px; }
  .qa-detail-header h1 { font-size: 1.3rem; }
  .qa-item { padding: 14px 16px; }
  .qa-text { font-size: .9rem; }
  .qa-views { display: none; }

  /* Static pages */
  .about-page, .contact-page { padding: 20px 16px; margin: 20px 0; }

  /* Breadcrumb */
  .breadcrumb { font-size: .78rem; padding: 10px 0; }
}

/* ══ LARGE PHONE 640px ══ */
@media (max-width: 640px) {
  .container { padding: 0 14px; }
  .hero { padding: 40px 0 36px; }
  .hero h1 { font-size: 1.7rem; }
  .hero-title { font-size: 1.4rem; }
  .hero-desc { font-size: .92rem; }

  .category-grid { gap: 10px; }
  .cat-card { padding: 14px 10px; gap: 10px; }
  .cat-icon { width: 40px; height: 40px; font-size: 1.3rem; border-radius: 10px; }
  .cat-name { font-size: .85rem; }
  .cat-desc { font-size: .72rem; }

  .section-title { font-size: 1.2rem; }
  .trust-stats { gap: 8px; }
  .stat-num { font-size: 1.4rem; }

  .cta-box { padding: 28px 16px; }
  .cta-box h2 { font-size: 1.25rem; }

  .pagination a, .pagination span { padding: 6px 10px; font-size: .8rem; }
  .footer-bottom { font-size: .75rem; }
}

/* ══ PHONE 480px ══ */
@media (max-width: 480px) {
  .hero { padding: 36px 0 32px; }
  .hero h1 { font-size: 1.45rem; line-height: 1.25; }
  .hero-title { font-size: 1.25rem; }
  .hero-desc { font-size: .85rem; margin-bottom: 16px; }
  .hero-badge { font-size: .75rem; padding: 4px 12px; margin-bottom: 12px; }
  .hero-buttons .btn-primary,
  .hero-buttons .btn-secondary { padding: 12px 16px; font-size: .9rem; max-width: 280px; }
  .hero-trust { gap: 6px; font-size: .7rem; }
  .hero-stats { gap: 10px; padding-top: 12px; margin-top: 18px; }
  .hero-stats .stat-item { flex: 0 0 calc(50% - 5px); }
  .stat-num { font-size: 1.3rem; }
  .stat-label { font-size: .7rem; }

  .section { padding: 28px 0; }
  .section-title { font-size: 1.1rem; }

  .category-grid { gap: 8px; }
  .cat-card { padding: 12px 8px; gap: 8px; border-radius: 12px; }
  .cat-icon { width: 36px; height: 36px; font-size: 1.2rem; border-radius: 8px; }
  .cat-name { font-size: .8rem; }
  .cat-desc { font-size: .68rem; margin-top: 2px; }

  .article-grid { gap: 10px; }
  .article-card .card-img img { height: 120px; }
  .article-card h3 { font-size: .88rem; }
  .card-body { padding: 12px; }

  .testimonial-card { padding: 16px 14px; }
  .testimonial-text { font-size: .88rem; line-height: 1.65; }

  .cta-section { padding: 28px 0 40px; }
  .cta-box { padding: 24px 16px; border-radius: 14px; }
  .cta-box h2 { font-size: 1.15rem; }
  .cta-box p { font-size: .85rem; }
  .cta-section .btn-primary { padding: 12px 20px; font-size: .92rem; }

  .footer-grid { gap: 16px; }
  .footer-col h4 { font-size: .88rem; margin-bottom: 10px; }
  .footer-col ul li a { font-size: .82rem; }

  .float-btns { right: 8px; bottom: 50px; gap: 2px; }
  .float-btn { width: 40px; height: 40px; }
  .float-btn svg { width: 18px; height: 18px; }

  .pagination { gap: 4px; margin: 24px 0; }
  .pagination a, .pagination span { padding: 5px 8px; font-size: .75rem; }

  .article-detail { gap: 16px; padding: 16px 0; }
  .article-main { padding: 16px 14px; }
  .article-main h1.article-heading { font-size: 1.15rem; }
  .article-main .article-body { font-size: .92rem; line-height: 1.75; }

  .city-services { padding: 28px 0; }
  .city-indicator { font-size: .72rem; padding: 4px 10px; }
}

/* ══ SMALL PHONE 360px ══ */
@media (max-width: 360px) {
  .hero { padding: 28px 0 24px; }
  .hero h1 { font-size: 1.25rem; }
  .hero-title { font-size: 1.1rem; }
  .hero-desc { font-size: .8rem; }
  .hero-buttons .btn-primary,
  .hero-buttons .btn-secondary { padding: 10px 14px; font-size: .85rem; max-width: 100%; }
  .hero-stats .stat-item { flex: 0 0 calc(50% - 4px); }
  .stat-num { font-size: 1.1rem; }

  .category-grid { gap: 6px; }
  .cat-card { padding: 10px 6px; gap: 6px; }
  .cat-icon { width: 32px; height: 32px; font-size: 1rem; border-radius: 6px; }
  .cat-name { font-size: .75rem; }
  .cat-desc { display: none; }

  .footer-grid { grid-template-columns: 1fr; gap: 14px; }
  .cta-box { padding: 20px 12px; }
  .cta-box h2 { font-size: 1.05rem; }

  .float-btns { right: 6px; bottom: 40px; gap: 2px; }
  .float-btn { width: 36px; height: 36px; }
  .float-btn svg { width: 16px; height: 16px; }

  .article-main { padding: 12px 10px; }
  .article-main h1.article-heading { font-size: 1.05rem; }
  .pagination a, .pagination span { padding: 4px 7px; font-size: .7rem; }
}

/* ── Unify testimonial grid ── */
.testimonial-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }